[REL] v2.8.0

# v2.8.0

 - [FIX] parser: t-esc/t-out vs t-translation*
 - [IMP] compiler: make human-readable ARIA attributes translatable

.github/workflows/deploy.yml

@@ -14,7 +14,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [12.x, 14.x, 16.x]
+        node-version: [20.x, 22.x]
 
     steps:
     - uses: actions/checkout@v2

doc/reference/app.md

@@ -6,6 +6,7 @@
 - [API](#api)
 - [Configuration](#configuration)
 - [`mount` helper](#mount-helper)
+- [Roots](#roots)
 - [Loading templates](#loading-templates)
 
 ## Overview
@@ -65,6 +66,9 @@ The `config` object is an object with some of the following keys:
   needs a template. If undefined is returned, owl looks into the app templates.
 - **`warnIfNoStaticProps (boolean, default=false)`**: if true, Owl will log a warning
   whenever it encounters a component that does not provide a [static props description](props.md#props-validation).
+- **`customDirectives (object)`**: if given, the corresponding function on the object will be called
+  on the template custom directives: `t-custom-*` (see [Custom Directives](templates.md#custom-directives)).
+- **`globalValues (object)`**: Global object of elements available at compilations.
 
 ## `mount` helper
 
@@ -92,6 +96,33 @@ Most of the time, the `mount` helper is more convenient, but whenever one needs
 a reference to the actual Owl App, then using the `App` class directly is
 possible.
 
+## Roots
+
+An application can have multiple roots. It is sometimes useful to instantiate
+sub components in places that are not managed by Owl, such as an html editor
+with dynamic content (the Knowledge application in Odoo).
+
+To create a root, one can use the `createRoot` method, which takes two arguments:
+
+- **`Component`**: a component class (Root component of the app)
+- **`config (optional)`**: a config object that may contain a `props` object or a
+  `env` object.
+
+The `createRoot` method returns an object with a `mount` method (same API as
+the `App.mount` method), and a `destroy` method.
+
+```js
+const root = app.createRoot(MyComponent, { props: { someProps: true } });
+await root.mount(targetElement);
+
+// later
+root.destroy();
+```
+
+Note that, like with owl `App`, it is the responsibility of the code that created
+the root to properly destroy it (before it has been removed from the DOM!). Owl
+has no way of doing it itself.
+
 ## Loading templates
 
 Most applications will need to load templates whenever they start. Here is

doc/reference/templates.md

@@ -18,6 +18,7 @@
   - [Sub Templates](#sub-templates)
   - [Dynamic Sub Templates](#dynamic-sub-templates)
   - [Debugging](#debugging)
+  - [Custom Directives](#custom-directives)
 - [Fragments](#fragments)
 - [Inline templates](#inline-templates)
 - [Rendering svg](#rendering-svg)
@@ -55,17 +56,19 @@ extensions.
 
 For reference, here is a list of all standard QWeb directives:
 
-| Name                           | Description                                                     |
-| ------------------------------ | --------------------------------------------------------------- |
-| `t-esc`                        | [Outputting safely a value](#outputting-data)                   |
-| `t-out`                        | [Outputting value, possibly without escaping](#outputting-data) |
-| `t-set`, `t-value`             | [Setting variables](#setting-variables)                         |
-| `t-if`, `t-elif`, `t-else`,    | [conditionally rendering](#conditionals)                        |
-| `t-foreach`, `t-as`            | [Loops](#loops)                                                 |
-| `t-att`, `t-attf-*`, `t-att-*` | [Dynamic attributes](#dynamic-attributes)                       |
-| `t-call`                       | [Rendering sub templates](#sub-templates)                       |
-| `t-debug`, `t-log`             | [Debugging](#debugging)                                         |
-| `t-translation`                | [Disabling the translation of a node](translations.md)          |
+| Name                           | Description                                                             |
+| ------------------------------ | ----------------------------------------------------------------------- |
+| `t-esc`                        | [Outputting safely a value](#outputting-data)                           |
+| `t-out`                        | [Outputting value, possibly without escaping](#outputting-data)         |
+| `t-set`, `t-value`             | [Setting variables](#setting-variables)                                 |
+| `t-if`, `t-elif`, `t-else`,    | [conditionally rendering](#conditionals)                                |
+| `t-foreach`, `t-as`            | [Loops](#loops)                                                         |
+| `t-att`, `t-attf-*`, `t-att-*` | [Dynamic attributes](#dynamic-attributes)                               |
+| `t-call`                       | [Rendering sub templates](#sub-templates)                               |
+| `t-debug`, `t-log`             | [Debugging](#debugging)                                                 |
+| `t-translation`                | [Disabling the translation of a node](translations.md)                  |
+| `t-translation-context`        | [Context of translations within a node](translations.md)                |
+| `t-translation-context-*`      | [Context of translation for a specific node attribute](translations.md) |
 
 The component system in Owl requires additional directives, to express various
 needs. Here is a list of all Owl specific directives:
@@ -80,6 +83,7 @@ needs. Here is a list of all Owl specific directives:
 | `t-slot`, `t-set-slot`, `t-slot-scope` | [Rendering a slot](slots.md)                                    |
 | `t-model`                              | [Form input bindings](input_bindings.md)                        |
 | `t-tag`                                | [Rendering nodes with dynamic tag name](#dynamic-tag-names)     |
+| `t-custom-*`                           | [Rendering nodes with custom directives](#custom-directives)    |
 
 ## QWeb Template Reference
 
@@ -189,6 +193,15 @@ The first `t-out` will act as a `t-esc` directive, which means that the content
 of `value1` will be escaped. However, since `value2` has been tagged as a markup,
 this will be injected as html.
 
+`markup` can also be used as a tag function, allowing the interpolated values to
+be safely escaped:
+
+```js
+const maliciousInput = "<script>alert('💥💥')</script>";
+// <b>&lt;script&gt;alert(&#x27;💥💥&#x27;)&lt;/script&gt;</b>
+const value = markup`<b>${maliciousInput}</b>`;
+```
+
 ### Setting Variables
 
 QWeb allows creating variables from within the template, to memoize a computation (to use it multiple times), give a piece of data a clearer name, ...
@@ -588,6 +601,35 @@ will stop execution if the browser dev tools are open.
 
 will print 42 to the console.
 
+### Custom Directives
+
+Owl 2 supports the declaration of custom directives. To use them, an Object of functions needs to be configured on the owl APP:
+
+```js
+ new App(..., {
+    customDirectives: {
+     test_directive: function (el, value) {
+            el.setAttribute("t-on-click", value);
+       }
+   }
+  });
+```
+
+The functions will be called when a custom directive with the name of the
+function is found. The original element will be replaced with the one
+modified by the function.
+This :
+
+```xml
+<div t-custom-test_directive="click" />
+```
+
+will be replaced by :
+
+```xml
+<div t-on-click="value"/>
+```
+
 ## Fragments
 
 Owl 2 supports templates with an arbitrary number of root elements, or even just

doc/reference/translations.md

@@ -1,17 +1,28 @@
 # 🦉 Translations 🦉
 
 If properly setup, Owl can translate all rendered templates. To do
-so, it needs a translate function, which takes a string and returns a string.
+so, it needs a translate function, which takes
+
+- a string (the term to translate)
+- a string (the translation context of the term)
+  and returns a string.
 
 For example:
 
 ```js
 const translations = {
-  hello: "bonjour",
-  yes: "oui",
-  no: "non",
+  fr: {
+    hello: "bonjour",
+    yes: "oui",
+    no: "non",
+  },
+  pt: {
+    hello: "bom dia",
+    yes: "sim",
+    no: "não",
+  },
 };
-const translateFn = (str) => translations[str] || str;
+const translateFn = (str, ctx) => translations[ctx]?.[str] || str;
 
 const app = new App(Root, { templates, tranaslateFn });
 // ...
@@ -27,6 +38,11 @@ Once setup, all rendered templates will be translated using `translateFn`:
   `placeholder`, `label` and `alt`,
 - translating text nodes can be disabled with the special attribute `t-translation`,
   if its value is `off`.
+- the translate function receives as second parameter a context that can be used
+  to contextualized the translation. That context can be set globally on a node
+  and its children by using `t-translation-context`. If a specific node
+  attribute `x` needs another context, that context can be specified with a
+  special directive `t-translation-context-x`.
 
 So, with the above `translateFn`, the following templates:
 
@@ -46,6 +62,22 @@ will be rendered as:
 <input placeholder="bonjour" other="yes"/>
 ```
 
+and the following template:
+
+```xml
+<div t-translation-context="fr" title="hello">hello</div>
+<div>Are you sure?</div>
+<input t-translation-context-placeholder="pt" placeholder="hello" other="yes"/>
+```
+
+will be rendered as:
+
+```xml
+<div title="bonjour">bonjour</div>
+<div>Are you sure?</div>
+<input placeholder="bom dia" other="yes"/>
+```
+
 Note that the translation is done during the compilation of the template, not
 when it is rendered.
 

doc/tools/devtools_guide.md

@@ -82,6 +82,22 @@ in the sources tab as well.
 
 <img src="screenshots/function_menu.png"/>
 
+Using the right-click context menu on a property also allows to observe variables. Observed variables will
+be sent to a dedicated section of the details window and their value will be refreshed every 200ms. These
+variables are only shown when they are found and their access path will be kept in memory inside the
+browser so that it will always persist until the user decides to stop observing the variable. As in the
+browser's devtools, observed objects are displayed in reduced form and cannot be interacted with. It is
+still possible to send them to the console or remove them from the list using right-click.
+
+<img src="screenshots/observe_variables.png"/>
+
+The last section of the details window is filled with the component's lifecycle hooks. Using right click on
+them allows to place breakpoints inside the hook (either on its instance or class, hooks like mounted and
+willStart cannot have instance-based breakpoints because they will never trigger). Conditions in conditional
+breakpoints will be evaluated in the context of the component's definition.
+
+<img src="screenshots/hooks.png"/>
+
 There are several icons available to perform several of the actions described before in the components
 tree context menu and all these actions are also available by opening the menu by right-clicking on the
 component's name. Using the left click on the component's name will focus it in the components tree.

docs/owl.js

@@ -276,13 +276,39 @@ function inOwnerDocument(el) {
     const rootNode = el.getRootNode();
     return rootNode instanceof ShadowRoot && el.ownerDocument.contains(rootNode.host);
 }
+/**
+ * Determine whether the given element is contained in a specific root documnet:
+ * either directly or with a shadow root in between or in an iframe.
+ */
+function isAttachedToDocument(element, documentElement) {
+    let current = element;
+    const shadowRoot = documentElement.defaultView.ShadowRoot;
+    while (current) {
+        if (current === documentElement) {
+            return true;
+        }
+        if (current.parentNode) {
+            current = current.parentNode;
+        }
+        else if (current instanceof shadowRoot && current.host) {
+            current = current.host;
+        }
+        else {
+            return false;
+        }
+    }
+    return false;
+}
 function validateTarget(target) {
     // Get the document and HTMLElement corresponding to the target to allow mounting in iframes
     const document = target && target.ownerDocument;
     if (document) {
+        if (!document.defaultView) {
+            throw new OwlError("Cannot mount a component: the target document is not attached to a window (defaultView is missing)");
+        }
         const HTMLElement = document.defaultView.HTMLElement;
         if (target instanceof HTMLElement || target instanceof ShadowRoot) {
-            if (!document.body.contains(target instanceof HTMLElement ? target : target.host)) {
+            if (!isAttachedToDocument(target, document)) {
                 throw new OwlError("Cannot mount a component on a detached dom node");
             }
             return;
@@ -319,12 +345,40 @@ async function loadFile(url) {
  */
 class Markup extends String {
 }
-/*
- * Marks a value as safe, that is, a value that can be injected as HTML directly.
- * It should be used to wrap the value passed to a t-out directive to allow a raw rendering.
- */
-function markup(value) {
-    return new Markup(value);
+function htmlEscape(str) {
+    if (str instanceof Markup) {
+        return str;
+    }
+    if (str === undefined) {
+        return markup("");
+    }
+    if (typeof str === "number") {
+        return markup(String(str));
+    }
+    [
+        ["&", "&"],
+        ["<", "&lt;"],
+        [">", "&gt;"],
+        ["'", "&#x27;"],
+        ['"', "&quot;"],
+        ["`", "&#x60;"],
+    ].forEach((pairs) => {
+        str = String(str).replace(new RegExp(pairs[0], "g"), pairs[1]);
+    });
+    return markup(str);
+}
+function markup(valueOrStrings, ...placeholders) {
+    if (!Array.isArray(valueOrStrings)) {
+        return new Markup(valueOrStrings);
+    }
+    const strings = valueOrStrings;
+    let acc = "";
+    let i = 0;
+    for (; i < placeholders.length; ++i) {
+        acc += strings[i] + htmlEscape(placeholders[i]);
+    }
+    acc += strings[i];
+    return new Markup(acc);
 }
 
 function createEventHandler(rawEvent) {
@@ -1625,6 +1679,13 @@ function makeRootFiber(node) {
             fibersInError.delete(current);
             fibersInError.delete(root);
             current.appliedToDom = false;
+            if (current instanceof RootFiber) {
+                // it is possible that this fiber is a fiber that crashed while being
+                // mounted, so the mounted list is possibly corrupted. We restore it to
+                // its normal initial state (which is empty list or a list with a mount
+                // fiber.
+                current.mounted = current instanceof MountFiber ? [current] : [];
+            }
         }
         return current;
     }
@@ -1741,6 +1802,7 @@ class RootFiber extends Fiber {
         const node = this.node;
         this.locked = true;
         let current = undefined;
+        let mountedFibers = this.mounted;
         try {
             // Step 1: calling all willPatch lifecycle hooks
             for (current of this.willPatch) {
@@ -1760,7 +1822,6 @@ class RootFiber extends Fiber {
             node._patch();
             this.locked = false;
             // Step 4: calling all mounted lifecycle hooks
-            let mountedFibers = this.mounted;
             while ((current = mountedFibers.pop())) {
                 current = current;
                 if (current.appliedToDom) {
@@ -1781,6 +1842,15 @@ class RootFiber extends Fiber {
             }
         }
         catch (e) {
+            // if mountedFibers is not empty, this means that a crash occured while
+            // calling the mounted hooks of some component. So, there may still be
+            // some component that have been mounted, but for which the mounted hooks
+            // have not been called. Here, we remove the willUnmount hooks for these
+            // specific component to prevent a worse situation (willUnmount being
+            // called even though mounted has not been called)
+            for (let fiber of mountedFibers) {
+                fiber.node.willUnmount = [];
+            }
             this.locked = false;
             node.app.handleError({ fiber: current || this, error: e });
         }
@@ -2270,6 +2340,12 @@ function collectionsProxyHandler(target, callback, targetRawType) {
 }
 
 let currentNode = null;
+function saveCurrent() {
+    let n = currentNode;
+    return () => {
+        currentNode = n;
+    };
+}
 function getCurrent() {
     if (!currentNode) {
         throw new OwlError("No active component (a hook function should only be called in 'setup')");
@@ -2598,42 +2674,47 @@ class ComponentNode {
 }
 
 const TIMEOUT = Symbol("timeout");
+const HOOK_TIMEOUT = {
+    onWillStart: 3000,
+    onWillUpdateProps: 3000,
+};
 function wrapError(fn, hookName) {
-    const error = new OwlError(`The following error occurred in ${hookName}: `);
-    const timeoutError = new OwlError(`${hookName}'s promise hasn't resolved after 3 seconds`);
+    const error = new OwlError();
+    const timeoutError = new OwlError();
     const node = getCurrent();
     return (...args) => {
         const onError = (cause) => {
             error.cause = cause;
-            if (cause instanceof Error) {
-                error.message += `"${cause.message}"`;
-            }
-            else {
-                error.message = `Something that is not an Error was thrown in ${hookName} (see this Error's "cause" property)`;
-            }
+            error.message =
+                cause instanceof Error
+                    ? `The following error occurred in ${hookName}: "${cause.message}"`
+                    : `Something that is not an Error was thrown in ${hookName} (see this Error's "cause" property)`;
             throw error;
         };
+        let result;
         try {
-            const result = fn(...args);
-            if (result instanceof Promise) {
-                if (hookName === "onWillStart" || hookName === "onWillUpdateProps") {
-                    const fiber = node.fiber;
-                    Promise.race([
-                        result.catch(() => { }),
-                        new Promise((resolve) => setTimeout(() => resolve(TIMEOUT), 3000)),
-                    ]).then((res) => {
-                        if (res === TIMEOUT && node.fiber === fiber && node.status <= 2) {
-                            console.warn(timeoutError);
-                        }
-                    });
-                }
-                return result.catch(onError);
-            }
-            return result;
+            result = fn(...args);
         }
         catch (cause) {
             onError(cause);
         }
+        if (!(result instanceof Promise)) {
+            return result;
+        }
+        const timeout = HOOK_TIMEOUT[hookName];
+        if (timeout) {
+            const fiber = node.fiber;
+            Promise.race([
+                result.catch(() => { }),
+                new Promise((resolve) => setTimeout(() => resolve(TIMEOUT), timeout)),
+            ]).then((res) => {
+                if (res === TIMEOUT && node.fiber === fiber && node.status <= 2) {
+                    timeoutError.message = `${hookName}'s promise hasn't resolved after ${timeout / 1000} seconds`;
+                    console.log(timeoutError);
+                }
+            });
+        }
+        return result.catch(onError);
     };
 }
 // -----------------------------------------------------------------------------
@@ -3216,6 +3297,9 @@ class TemplateSet {
             }
         }
         this.getRawTemplate = config.getTemplate;
+        this.customDirectives = config.customDirectives || {};
+        this.runtimeUtils = { ...helpers, __globals__: config.globalValues || {} };
+        this.hasGlobalValues = Boolean(config.globalValues && Object.keys(config.globalValues).length);
     }
     static registerTemplate(name, fn) {
         globalTemplates[name] = fn;
@@ -3272,7 +3356,7 @@ class TemplateSet {
             this.templates[name] = function (context, parent) {
                 return templates[name].call(this, context, parent);
             };
-            const template = templateFn(this, bdom, helpers);
+            const template = templateFn(this, bdom, this.runtimeUtils);
             this.templates[name] = template;
         }
         return this.templates[name];
@@ -3323,7 +3407,7 @@ TemplateSet.registerTemplate("__portal__", portalTemplate);
 //------------------------------------------------------------------------------
 // Misc types, constants and helpers
 //------------------------------------------------------------------------------
-const RESERVED_WORDS = "true,false,NaN,null,undefined,debugger,console,window,in,instanceof,new,function,return,eval,void,Math,RegExp,Array,Object,Date".split(",");
+const RESERVED_WORDS = "true,false,NaN,null,undefined,debugger,console,window,in,instanceof,new,function,return,eval,void,Math,RegExp,Array,Object,Date,__globals__".split(",");
 const WORD_REPLACEMENT = Object.assign(Object.create(null), {
     and: "&&",
     or: "||",
@@ -3708,6 +3792,7 @@ function createContext(parentCtx, params) {
         index: 0,
         forceNewBlock: true,
         translate: parentCtx.translate,
+        translationCtx: parentCtx.translationCtx,
         tKeyExpr: null,
         nameSpace: parentCtx.nameSpace,
         tModelSelectedExpr: parentCtx.tModelSelectedExpr,
@@ -3765,7 +3850,16 @@ class CodeTarget {
         return key;
     }
 }
-const TRANSLATABLE_ATTRS = ["label", "title", "placeholder", "alt"];
+const TRANSLATABLE_ATTRS = [
+    "alt",
+    "aria-label",
+    "aria-placeholder",
+    "aria-roledescription",
+    "aria-valuetext",
+    "label",
+    "placeholder",
+    "title",
+];
 const translationRE = /^(\s*)([\s\S]+?)(\s*)$/;
 class CodeGenerator {
     constructor(ast, options) {
@@ -3795,6 +3889,9 @@ class CodeGenerator {
         this.dev = options.dev || false;
         this.ast = ast;
         this.templateName = options.name;
+        if (options.hasGlobalValues) {
+            this.helpers.add("__globals__");
+        }
     }
     generateCode() {
         const ast = this.ast;
@@ -3807,6 +3904,7 @@ class CodeGenerator {
             forceNewBlock: false,
             isLast: true,
             translate: true,
+            translationCtx: "",
             tKeyExpr: null,
         });
         // define blocks and utility functions
@@ -3944,9 +4042,9 @@ class CodeGenerator {
         })
             .join("");
     }
-    translate(str) {
+    translate(str, translationCtx) {
         const match = translationRE.exec(str);
-        return match[1] + this.translateFn(match[2]) + match[3];
+        return match[1] + this.translateFn(match[2], translationCtx) + match[3];
     }
     /**
      * @returns the newly created block name, if any
@@ -3987,7 +4085,9 @@ class CodeGenerator {
                 return this.compileTSlot(ast, ctx);
             case 16 /* TTranslation */:
                 return this.compileTTranslation(ast, ctx);
-            case 17 /* TPortal */:
+            case 17 /* TTranslationContext */:
+                return this.compileTTranslationContext(ast, ctx);
+            case 18 /* TPortal */:
                 return this.compileTPortal(ast, ctx);
         }
     }
@@ -4025,7 +4125,7 @@ class CodeGenerator {
         let { block, forceNewBlock } = ctx;
         let value = ast.value;
         if (value && ctx.translate !== false) {
-            value = this.translate(value);
+            value = this.translate(value, ctx.translationCtx);
         }
         if (!ctx.inPreTag) {
             value = value.replace(whitespaceRE, " ");
@@ -4060,6 +4160,7 @@ class CodeGenerator {
         return `[${modifiersCode}${this.captureExpression(handler)}, ctx]`;
     }
     compileTDomNode(ast, ctx) {
+        var _a;
         let { block, forceNewBlock } = ctx;
         const isNewBlock = !block || forceNewBlock || ast.dynamicTag !== null || ast.ns;
         let codeIdx = this.target.code.length;
@@ -4115,7 +4216,8 @@ class CodeGenerator {
                 }
             }
             else if (this.translatableAttributes.includes(key)) {
-                attrs[key] = this.translateFn(ast.attrs[key]);
+                const attrTranslationCtx = ((_a = ast.attrsTranslationCtx) === null || _a === void 0 ? void 0 : _a[key]) || ctx.translationCtx;
+                attrs[key] = this.translateFn(ast.attrs[key], attrTranslationCtx);
             }
             else {
                 expr = `"${ast.attrs[key]}"`;
@@ -4559,7 +4661,7 @@ class CodeGenerator {
         else {
             let value;
             if (ast.defaultValue) {
-                const defaultValue = toStringExpression(ctx.translate ? this.translate(ast.defaultValue) : ast.defaultValue);
+                const defaultValue = toStringExpression(ctx.translate ? this.translate(ast.defaultValue, ctx.translationCtx) : ast.defaultValue);
                 if (ast.value) {
                     value = `withDefault(${expr}, ${defaultValue})`;
                 }
@@ -4593,9 +4695,10 @@ class CodeGenerator {
      * "some-prop"       "state"          "'some-prop': ctx['state']"
      * "onClick.bind"    "onClick"        "onClick: bind(ctx, ctx['onClick'])"
      */
-    formatProp(name, value) {
+    formatProp(name, value, attrsTranslationCtx, translationCtx) {
         if (name.endsWith(".translate")) {
-            value = toStringExpression(this.translateFn(value));
+            const attrTranslationCtx = (attrsTranslationCtx === null || attrsTranslationCtx === void 0 ? void 0 : attrsTranslationCtx[name]) || translationCtx;
+            value = toStringExpression(this.translateFn(value, attrTranslationCtx));
         }
         else {
             value = this.captureExpression(value);
@@ -4611,14 +4714,14 @@ class CodeGenerator {
                 case "translate":
                     break;
                 default:
-                    throw new OwlError("Invalid prop suffix");
+                    throw new OwlError(`Invalid prop suffix: ${suffix}`);
             }
         }
         name = /^[a-z_]+$/i.test(name) ? name : `'${name}'`;
         return `${name}: ${value || undefined}`;
     }
-    formatPropObject(obj) {
-        return Object.entries(obj).map(([k, v]) => this.formatProp(k, v));
+    formatPropObject(obj, attrsTranslationCtx, translationCtx) {
+        return Object.entries(obj).map(([k, v]) => this.formatProp(k, v, attrsTranslationCtx, translationCtx));
     }
     getPropString(props, dynProps) {
         let propString = `{${props.join(",")}}`;
@@ -4631,7 +4734,9 @@ class CodeGenerator {
         let { block } = ctx;
         // props
         const hasSlotsProp = "slots" in (ast.props || {});
-        const props = ast.props ? this.formatPropObject(ast.props) : [];
+        const props = ast.props
+            ? this.formatPropObject(ast.props, ast.propsTranslationCtx, ctx.translationCtx)
+            : [];
         // slots
         let slotDef = "";
         if (ast.slots) {
@@ -4654,7 +4759,7 @@ class CodeGenerator {
                     params.push(`__scope: "${scope}"`);
                 }
                 if (ast.slots[slotName].attrs) {
-                    params.push(...this.formatPropObject(ast.slots[slotName].attrs));
+                    params.push(...this.formatPropObject(ast.slots[slotName].attrs, ast.slots[slotName].attrsTranslationCtx, ctx.translationCtx));
                 }
                 const slotInfo = `{${params.join(", ")}}`;
                 slotStr.push(`'${slotName}': ${slotInfo}`);
@@ -4759,15 +4864,16 @@ class CodeGenerator {
             isMultiple = isMultiple || this.slotNames.has(ast.name);
             this.slotNames.add(ast.name);
         }
-        const dynProps = ast.attrs ? ast.attrs["t-props"] : null;
-        if (ast.attrs) {
-            delete ast.attrs["t-props"];
-        }
+        const attrs = { ...ast.attrs };
+        const dynProps = attrs["t-props"];
+        delete attrs["t-props"];
         let key = this.target.loopLevel ? `key${this.target.loopLevel}` : "key";
         if (isMultiple) {
             key = this.generateComponentKey(key);
         }
-        const props = ast.attrs ? this.formatPropObject(ast.attrs) : [];
+        const props = ast.attrs
+            ? this.formatPropObject(attrs, ast.attrsTranslationCtx, ctx.translationCtx)
+            : [];
         const scope = this.getPropString(props, dynProps);
         if (ast.defaultContent) {
             const name = this.compileInNewTarget("defaultContent", ast.defaultContent, ctx);
@@ -4800,6 +4906,12 @@ class CodeGenerator {
         }
         return null;
     }
+    compileTTranslationContext(ast, ctx) {
+        if (ast.content) {
+            return this.compileAST(ast.content, Object.assign({}, ctx, { translationCtx: ast.translationCtx }));
+        }
+        return null;
+    }
     compileTPortal(ast, ctx) {
         if (!this.staticDefs.find((d) => d.id === "Portal")) {
             this.staticDefs.push({ id: "Portal", expr: `app.Portal` });
@@ -4833,38 +4945,43 @@ class CodeGenerator {
 // Parser
 // -----------------------------------------------------------------------------
 const cache = new WeakMap();
-function parse(xml) {
+function parse(xml, customDir) {
+    const ctx = {
+        inPreTag: false,
+        customDirectives: customDir,
+    };
     if (typeof xml === "string") {
         const elem = parseXML(`<t>${xml}</t>`).firstChild;
-        return _parse(elem);
+        return _parse(elem, ctx);
     }
     let ast = cache.get(xml);
     if (!ast) {
         // we clone here the xml to prevent modifying it in place
-        ast = _parse(xml.cloneNode(true));
+        ast = _parse(xml.cloneNode(true), ctx);
         cache.set(xml, ast);
     }
     return ast;
 }
-function _parse(xml) {
+function _parse(xml, ctx) {
     normalizeXML(xml);
-    const ctx = { inPreTag: false };
     return parseNode(xml, ctx) || { type: 0 /* Text */, value: "" };
 }
 function parseNode(node, ctx) {
     if (!(node instanceof Element)) {
         return parseTextCommentNode(node, ctx);
     }
-    return (parseTDebugLog(node, ctx) ||
+    return (parseTCustom(node, ctx) ||
+        parseTDebugLog(node, ctx) ||
         parseTForEach(node, ctx) ||
         parseTIf(node, ctx) ||
         parseTPortal(node, ctx) ||
         parseTCall(node, ctx) ||
         parseTCallBlock(node) ||
+        parseTTranslation(node, ctx) ||
+        parseTTranslationContext(node, ctx) ||
         parseTEscNode(node, ctx) ||
         parseTOutNode(node, ctx) ||
         parseTKey(node, ctx) ||
-        parseTTranslation(node, ctx) ||
         parseTSlot(node, ctx) ||
         parseComponent(node, ctx) ||
         parseDOMNode(node, ctx) ||
@@ -4897,6 +5014,35 @@ function parseTextCommentNode(node, ctx) {
     }
     return null;
 }
+function parseTCustom(node, ctx) {
+    if (!ctx.customDirectives) {
+        return null;
+    }
+    const nodeAttrsNames = node.getAttributeNames();
+    for (let attr of nodeAttrsNames) {
+        if (attr === "t-custom" || attr === "t-custom-") {
+            throw new OwlError("Missing custom directive name with t-custom directive");
+        }
+        if (attr.startsWith("t-custom-")) {
+            const directiveName = attr.split(".")[0].slice(9);
+            const customDirective = ctx.customDirectives[directiveName];
+            if (!customDirective) {
+                throw new OwlError(`Custom directive "${directiveName}" is not defined`);
+            }
+            const value = node.getAttribute(attr);
+            const modifiers = attr.split(".").slice(1);
+            node.removeAttribute(attr);
+            try {
+                customDirective(node, value, modifiers);
+            }
+            catch (error) {
+                throw new OwlError(`Custom directive "${directiveName}" throw the following error: ${error}`);
+            }
+            return parseNode(node, ctx);
+        }
+    }
+    return null;
+}
 // -----------------------------------------------------------------------------
 // debugging
 // -----------------------------------------------------------------------------
@@ -4944,6 +5090,7 @@ function parseDOMNode(node, ctx) {
     node.removeAttribute("t-ref");
     const nodeAttrsNames = node.getAttributeNames();
     let attrs = null;
+    let attrsTranslationCtx = null;
     let on = null;
     let model = null;
     for (let attr of nodeAttrsNames) {
@@ -5004,6 +5151,11 @@ function parseDOMNode(node, ctx) {
         else if (attr === "xmlns") {
             ns = value;
         }
+        else if (attr.startsWith("t-translation-context-")) {
+            const attrName = attr.slice(22);
+            attrsTranslationCtx = attrsTranslationCtx || {};
+            attrsTranslationCtx[attrName] = value;
+        }
         else if (attr !== "t-name") {
             if (attr.startsWith("t-") && !attr.startsWith("t-att")) {
                 throw new OwlError(`Unknown QWeb directive: '${attr}'`);
@@ -5025,6 +5177,7 @@ function parseDOMNode(node, ctx) {
         tag: tagName,
         dynamicTag,
         attrs,
+        attrsTranslationCtx,
         on,
         ref,
         content: children,
@@ -5165,7 +5318,15 @@ function parseTCall(node, ctx) {
         if (ast && ast.type === 11 /* TComponent */) {
             return {
                 ...ast,
-                slots: { default: { content: tcall, scope: null, on: null, attrs: null } },
+                slots: {
+                    default: {
+                        content: tcall,
+                        scope: null,
+                        on: null,
+                        attrs: null,
+                        attrsTranslationCtx: null,
+                    },
+                },
             };
         }
     }
@@ -5280,9 +5441,15 @@ function parseComponent(node, ctx) {
     node.removeAttribute("t-slot-scope");
     let on = null;
     let props = null;
+    let propsTranslationCtx = null;
     for (let name of node.getAttributeNames()) {
         const value = node.getAttribute(name);
-        if (name.startsWith("t-")) {
+        if (name.startsWith("t-translation-context-")) {
+            const attrName = name.slice(22);
+            propsTranslationCtx = propsTranslationCtx || {};
+            propsTranslationCtx[attrName] = value;
+        }
+        else if (name.startsWith("t-")) {
             if (name.startsWith("t-on-")) {
                 on = on || {};
                 on[name.slice(5)] = value;
@@ -5326,6 +5493,7 @@ function parseComponent(node, ctx) {
             const slotAst = parseNode(slotNode, ctx);
             let on = null;
             let attrs = null;
+            let attrsTranslationCtx = null;
             let scope = null;
             for (let attributeName of slotNode.getAttributeNames()) {
                 const value = slotNode.getAttribute(attributeName);
@@ -5333,6 +5501,11 @@ function parseComponent(node, ctx) {
                     scope = value;
                     continue;
                 }
+                else if (attributeName.startsWith("t-translation-context-")) {
+                    const attrName = attributeName.slice(22);
+                    attrsTranslationCtx = attrsTranslationCtx || {};
+                    attrsTranslationCtx[attrName] = value;
+                }
                 else if (attributeName.startsWith("t-on-")) {
                     on = on || {};
                     on[attributeName.slice(5)] = value;
@@ -5343,17 +5516,32 @@ function parseComponent(node, ctx) {
                 }
             }
             slots = slots || {};
-            slots[name] = { content: slotAst, on, attrs, scope };
+            slots[name] = { content: slotAst, on, attrs, attrsTranslationCtx, scope };
         }
         // default slot
         const defaultContent = parseChildNodes(clone, ctx);
         slots = slots || {};
         // t-set-slot="default" has priority over content
         if (defaultContent && !slots.default) {
-            slots.default = { content: defaultContent, on, attrs: null, scope: defaultSlotScope };
+            slots.default = {
+                content: defaultContent,
+                on,
+                attrs: null,
+                attrsTranslationCtx: null,
+                scope: defaultSlotScope,
+            };
         }
     }
-    return { type: 11 /* TComponent */, name, isDynamic, dynamicProps, props, slots, on };
+    return {
+        type: 11 /* TComponent */,
+        name,
+        isDynamic,
+        dynamicProps,
+        props,
+        propsTranslationCtx,
+        slots,
+        on,
+    };
 }
 // -----------------------------------------------------------------------------
 // Slots
@@ -5365,6 +5553,7 @@ function parseTSlot(node, ctx) {
     const name = node.getAttribute("t-slot");
     node.removeAttribute("t-slot");
     let attrs = null;
+    let attrsTranslationCtx = null;
     let on = null;
     for (let attributeName of node.getAttributeNames()) {
         const value = node.getAttribute(attributeName);
@@ -5372,6 +5561,11 @@ function parseTSlot(node, ctx) {
             on = on || {};
             on[attributeName.slice(5)] = value;
         }
+        else if (attributeName.startsWith("t-translation-context-")) {
+            const attrName = attributeName.slice(22);
+            attrsTranslationCtx = attrsTranslationCtx || {};
+            attrsTranslationCtx[attrName] = value;
+        }
         else {
             attrs = attrs || {};
             attrs[attributeName] = value;
@@ -5381,10 +5575,14 @@ function parseTSlot(node, ctx) {
         type: 14 /* TSlot */,
         name,
         attrs,
+        attrsTranslationCtx,
         on,
         defaultContent: parseChildNodes(node, ctx),
     };
 }
+// -----------------------------------------------------------------------------
+// Translation
+// -----------------------------------------------------------------------------
 function parseTTranslation(node, ctx) {
     if (node.getAttribute("t-translation") !== "off") {
         return null;
@@ -5396,6 +5594,21 @@ function parseTTranslation(node, ctx) {
     };
 }
 // -----------------------------------------------------------------------------
+// Translation Context
+// -----------------------------------------------------------------------------
+function parseTTranslationContext(node, ctx) {
+    const translationCtx = node.getAttribute("t-translation-context");
+    if (!translationCtx) {
+        return null;
+    }
+    node.removeAttribute("t-translation-context");
+    return {
+        type: 17 /* TTranslationContext */,
+        content: parseNode(node, ctx),
+        translationCtx,
+    };
+}
+// -----------------------------------------------------------------------------
 // Portal
 // -----------------------------------------------------------------------------
 function parseTPortal(node, ctx) {
@@ -5412,7 +5625,7 @@ function parseTPortal(node, ctx) {
         };
     }
     return {
-        type: 17 /* TPortal */,
+        type: 18 /* TPortal */,
         target,
         content,
     };
@@ -5528,9 +5741,11 @@ function normalizeXML(el) {
     normalizeTEscTOut(el);
 }
 
-function compile(template, options = {}) {
+function compile(template, options = {
+    hasGlobalValues: false,
+}) {
     // parsing
-    const ast = parse(template);
+    const ast = parse(template, options.customDirectives);
     // some work
     const hasSafeContext = template instanceof Node
         ? !(template instanceof Element) || template.querySelector("[t-set], [t-call]") === null
@@ -5552,7 +5767,7 @@ function compile(template, options = {}) {
 }
 
 // do not modify manually. This file is generated by the release script.
-const version = "2.3.0";
+const version = "2.8.0";
 
 // -----------------------------------------------------------------------------
 //  Scheduler
@@ -5563,6 +5778,7 @@ class Scheduler {
         this.frame = 0;
         this.delayedRenders = [];
         this.cancelledNodes = new Set();
+        this.processing = false;
         this.requestAnimationFrame = Scheduler.requestAnimationFrame;
     }
     addFiber(fiber) {
@@ -5593,6 +5809,10 @@ class Scheduler {
         }
     }
     processTasks() {
+        if (this.processing) {
+            return;
+        }
+        this.processing = true;
         this.frame = 0;
         for (let node of this.cancelledNodes) {
             node._destroy();
@@ -5606,6 +5826,7 @@ class Scheduler {
                 this.tasks.delete(task);
             }
         }
+        this.processing = false;
     }
     processFiber(fiber) {
         if (fiber.root !== fiber) {
@@ -5625,7 +5846,14 @@ class Scheduler {
             if (!hasError) {
                 fiber.complete();
             }
-            this.tasks.delete(fiber);
+            // at this point, the fiber should have been applied to the DOM, so we can
+            // remove it from the task list. If it is not the case, it means that there
+            // was an error and an error handler triggered a new rendering that recycled
+            // the fiber, so in that case, we actually want to keep the fiber around,
+            // otherwise it will just be ignored.
+            if (fiber.appliedToDom) {
+                this.tasks.delete(fiber);
+            }
         }
     }
 }
@@ -5634,19 +5862,13 @@ class Scheduler {
 Scheduler.requestAnimationFrame = window.requestAnimationFrame.bind(window);
 
 let hasBeenLogged = false;
-const DEV_MSG = () => {
-    const hash = window.owl ? window.owl.__info__.hash : "master";
-    return `Owl is running in 'dev' mode.
-
-This is not suitable for production use.
-See https://github.com/odoo/owl/blob/${hash}/doc/reference/app.md#configuration for more information.`;
-};
 const apps = new Set();
 window.__OWL_DEVTOOLS__ || (window.__OWL_DEVTOOLS__ = { apps, Fiber, RootFiber, toRaw, reactive });
 class App extends TemplateSet {
     constructor(Root, config = {}) {
         super(config);
         this.scheduler = new Scheduler();
+        this.subRoots = new Set();
         this.root = null;
         this.name = config.name || "";
         this.Root = Root;
@@ -5656,7 +5878,7 @@ class App extends TemplateSet {
         }
         this.warnIfNoStaticProps = config.warnIfNoStaticProps || false;
         if (this.dev && !config.test && !hasBeenLogged) {
-            console.info(DEV_MSG());
+            console.info(`Owl is running in 'dev' mode.`);
             hasBeenLogged = true;
         }
         const env = config.env || {};
@@ -5665,14 +5887,44 @@ class App extends TemplateSet {
         this.props = config.props || {};
     }
     mount(target, options) {
-        App.validateTarget(target);
-        if (this.dev) {
-            validateProps(this.Root, this.props, { __owl__: { app: this } });
+        const root = this.createRoot(this.Root, { props: this.props });
+        this.root = root.node;
+        this.subRoots.delete(root.node);
+        return root.mount(target, options);
+    }
+    createRoot(Root, config = {}) {
+        const props = config.props || {};
+        // hack to make sure the sub root get the sub env if necessary. for owl 3,
+        // would be nice to rethink the initialization process to make sure that
+        // we can create a ComponentNode and give it explicitely the env, instead
+        // of looking it up in the app
+        const env = this.env;
+        if (config.env) {
+            this.env = config.env;
         }
-        const node = this.makeNode(this.Root, this.props);
-        const prom = this.mountNode(node, target, options);
-        this.root = node;
-        return prom;
+        const restore = saveCurrent();
+        const node = this.makeNode(Root, props);
+        restore();
+        if (config.env) {
+            this.env = env;
+        }
+        this.subRoots.add(node);
+        return {
+            node,
+            mount: (target, options) => {
+                App.validateTarget(target);
+                if (this.dev) {
+                    validateProps(Root, props, { __owl__: { app: this } });
+                }
+                const prom = this.mountNode(node, target, options);
+                return prom;
+            },
+            destroy: () => {
+                this.subRoots.delete(node);
+                node.destroy();
+                this.scheduler.processTasks();
+            },
+        };
     }
     makeNode(Component, props) {
         return new ComponentNode(Component, props, this, null, null);
@@ -5704,6 +5956,9 @@ class App extends TemplateSet {
     }
     destroy() {
         if (this.root) {
+            for (let subroot of this.subRoots) {
+                subroot.destroy();
+            }
             this.root.destroy();
             this.scheduler.processTasks();
         }
@@ -5975,12 +6230,14 @@ TemplateSet.prototype._compileTemplate = function _compileTemplate(name, templat
         dev: this.dev,
         translateFn: this.translateFn,
         translatableAttributes: this.translatableAttributes,
+        customDirectives: this.customDirectives,
+        hasGlobalValues: this.hasGlobalValues,
     });
 };
 
-export { App, Component, EventBus, OwlError, __info__, batched, blockDom, loadFile, markRaw, markup, mount, onError, onMounted, onPatched, onRendered, onWillDestroy, onWillPatch, onWillRender, onWillStart, onWillUnmount, onWillUpdateProps, reactive, status, toRaw, useChildSubEnv, useComponent, useEffect, useEnv, useExternalListener, useRef, useState, useSubEnv, validate, validateType, whenReady, xml };
+export { App, Component, EventBus, OwlError, __info__, batched, blockDom, htmlEscape, loadFile, markRaw, markup, mount, onError, onMounted, onPatched, onRendered, onWillDestroy, onWillPatch, onWillRender, onWillStart, onWillUnmount, onWillUpdateProps, reactive, status, toRaw, useChildSubEnv, useComponent, useEffect, useEnv, useExternalListener, useRef, useState, useSubEnv, validate, validateType, whenReady, xml };
 
 
-__info__.date = '2024-07-25T13:13:44.371Z';
-__info__.hash = '0cde4b8';
+__info__.date = '2025-06-30T12:46:06.424Z';
+__info__.hash = 'b620502';
 __info__.url = 'https://github.com/odoo/owl';

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@odoo/owl",
-  "version": "2.3.0",
+  "version": "2.8.0",
   "description": "Odoo Web Library (OWL)",
   "main": "dist/owl.cjs.js",
   "module": "dist/owl.es.js",
@@ -9,7 +9,7 @@
     "dist"
   ],
   "engines": {
-    "node": ">=12.18.3"
+    "node": ">=20.0.0"
   },
   "scripts": {
     "build:bundle": "rollup -c --failAfterWarnings",
@@ -32,7 +32,10 @@
     "check-formatting": "prettier {src/*.ts,src/**/*.ts,tests/*.ts,tests/**/*.ts,doc/*.md,doc/**/*.md,tools/devtools/**/*.js} --check",
     "lint": "eslint src/**/*.ts tests/**/*.ts",
     "release": "node tools/release.js",
-    "compile_templates": "node tools/compile_xml.js"
+    "compile_templates": "node tools/compile_owl_templates.mjs"
+  },
+  "bin": {
+    "compile_owl_templates": "tools/compile_owl_templates.mjs"
   },
   "repository": {
     "type": "git",
@@ -46,6 +49,7 @@
   "homepage": "https://github.com/odoo/owl#readme",
   "devDependencies": {
     "@types/jest": "^27.0.1",
+    "@types/jsdom": "^21.1.7",
     "@types/node": "^14.11.8",
     "@typescript-eslint/eslint-plugin": "5.48.1",
     "@typescript-eslint/parser": "5.48.1",
@@ -97,5 +101,8 @@
   "prettier": {
     "printWidth": 100,
     "endOfLine": "auto"
+  },
+  "dependencies": {
+    "jsdom": "^25.0.1"
   }
 }

rollup.config.js

@@ -1,6 +1,6 @@
 import pkg from "./package.json";
 import git from "git-rev-sync";
-import typescript from 'rollup-plugin-typescript2';
+import typescript from "rollup-plugin-typescript2";
 import { terser } from "rollup-plugin-terser";
 import dts from "rollup-plugin-dts";
 
@@ -12,7 +12,7 @@ const ES_FILENAME = "dist/owl.es.js";
 
 if (pkg.module !== ES_FILENAME || pkg.main !== CJS_FILENAME) {
   throw new Error("package.json has been modified. Build script should be updated accordingly");
-}  
+}
 
 const outro = `
 __info__.date = '${new Date().toISOString()}';
@@ -21,39 +21,37 @@ __info__.url = 'https://github.com/odoo/owl';
 `;
 
 switch (process.argv[4]) {
-  case "compiler": 
-    input = "src/compiler/index.ts",
-    output = [
-      getConfigForFormat('cjs', 'dist/compiler.js', ''),
-    ]
+  case "compiler":
+    (input = "src/compiler/index.ts"),
+      (output = [getConfigForFormat("cjs", "dist/compiler.js", "")]);
     break;
   case "runtime":
     input = "src/runtime/index.ts";
     output = [
-      getConfigForFormat('esm', addSuffix(ES_FILENAME,  'runtime'), outro),
-      getConfigForFormat('cjs', addSuffix(CJS_FILENAME,  'runtime'), outro),
-      getConfigForFormat('iife', addSuffix(IIFE_FILENAME,  'runtime'), outro),
-      getConfigForFormat('iife', addSuffix(IIFE_FILENAME,  'runtime'), outro, true),
-    ]
+      getConfigForFormat("esm", addSuffix(ES_FILENAME, "runtime"), outro),
+      getConfigForFormat("cjs", addSuffix(CJS_FILENAME, "runtime"), outro),
+      getConfigForFormat("iife", addSuffix(IIFE_FILENAME, "runtime"), outro),
+      getConfigForFormat("iife", addSuffix(IIFE_FILENAME, "runtime"), outro, true),
+    ];
     break;
   default:
-    input = "src/index.ts",
-    output = [
-      getConfigForFormat('esm', ES_FILENAME, outro),
-      getConfigForFormat('cjs', CJS_FILENAME, outro),
-      getConfigForFormat('iife', IIFE_FILENAME, outro),
-      getConfigForFormat('iife', IIFE_FILENAME, outro, true),
-    ]
-  }
+    (input = "src/index.ts"),
+      (output = [
+        getConfigForFormat("esm", ES_FILENAME, outro),
+        getConfigForFormat("cjs", CJS_FILENAME, outro),
+        getConfigForFormat("iife", IIFE_FILENAME, outro),
+        getConfigForFormat("iife", IIFE_FILENAME, outro, true),
+      ]);
+}
 
 /**
  * Generate from a string depicting a path a new path for the minified version.
  * @param {string} pkgFileName file name
  */
 function addSuffix(pkgFileName, suffix) {
-  const parts = pkgFileName.split('.');
+  const parts = pkgFileName.split(".");
   parts.splice(parts.length - 1, 0, suffix);
-  return parts.join('.');
+  return parts.join(".");
 }
 
 /**
@@ -71,7 +69,7 @@ function getConfigForFormat(format, generatedFileName, outro, minified = false)
     outro: outro,
     freeze: false,
     plugins: minified ? [terser()] : [],
-    indent: '    ', // indent with 4 spaces
+    indent: "    ", // indent with 4 spaces
   };
 }
 
@@ -81,9 +79,19 @@ export default [
     output,
     plugins: [
       typescript({
-        useTsconfigDeclarationDir: true
+        useTsconfigDeclarationDir: true,
       }),
-    ]
+    ],
+  },
+  {
+    input: "src/compiler/standalone/index.ts",
+    output: [{ file: "dist/compile_templates.mjs", format: "es" }],
+    external: ["fs", "fs/promises", "path", "jsdom"],
+    plugins: [
+      typescript({
+        useTsconfigDeclarationDir: true,
+      }),
+    ],
   },
   {
     input: "dist/types/index.d.ts",

src/common/types.ts

@@ -0,0 +1,4 @@
+export type customDirectives = Record<
+  string,
+  (node: Element, value: string, modifier: string[]) => void
+>;

src/compiler/code_generator.ts

@@ -24,6 +24,7 @@ import {
   ASTTOut,
   ASTTPortal,
   ASTTranslation,
+  ASTTranslationContext,
   ASTTSet,
   ASTType,
   Attrs,
@@ -35,7 +36,7 @@ type BlockType = "block" | "text" | "multi" | "list" | "html" | "comment";
 const whitespaceRE = /\s+/g;
 
 export interface Config {
-  translateFn?: (s: string) => string;
+  translateFn?: (s: string, translationCtx: string) => string;
   translatableAttributes?: string[];
   dev?: boolean;
 }
@@ -43,6 +44,7 @@ export interface Config {
 export interface CodeGenOptions extends Config {
   hasSafeContext?: boolean;
   name?: string;
+  hasGlobalValues: boolean;
 }
 
 // using a non-html document so that <inner/outer>HTML serializes as XML instead
@@ -170,6 +172,7 @@ interface Context {
   forceNewBlock: boolean;
   isLast?: boolean;
   translate: boolean;
+  translationCtx: string;
   tKeyExpr: string | null;
   nameSpace?: string;
   tModelSelectedExpr?: string;
@@ -184,6 +187,7 @@ function createContext(parentCtx: Context, params?: Partial<Context>): Context {
       index: 0,
       forceNewBlock: true,
       translate: parentCtx.translate,
+      translationCtx: parentCtx.translationCtx,
       tKeyExpr: null,
       nameSpace: parentCtx.nameSpace,
       tModelSelectedExpr: parentCtx.tModelSelectedExpr,
@@ -250,7 +254,16 @@ class CodeTarget {
   }
 }
 
-const TRANSLATABLE_ATTRS = ["label", "title", "placeholder", "alt"];
+const TRANSLATABLE_ATTRS = [
+  "alt",
+  "aria-label",
+  "aria-placeholder",
+  "aria-roledescription",
+  "aria-valuetext",
+  "label",
+  "placeholder",
+  "title",
+];
 const translationRE = /^(\s*)([\s\S]+?)(\s*)$/;
 
 export class CodeGenerator {
@@ -262,7 +275,7 @@ export class CodeGenerator {
   target = new CodeTarget("template");
   templateName?: string;
   dev: boolean;
-  translateFn: (s: string) => string;
+  translateFn: (s: string, translationCtx: string) => string;
   translatableAttributes: string[] = TRANSLATABLE_ATTRS;
   ast: AST;
   staticDefs: { id: string; expr: string }[] = [];
@@ -286,6 +299,9 @@ export class CodeGenerator {
     this.dev = options.dev || false;
     this.ast = ast;
     this.templateName = options.name;
+    if (options.hasGlobalValues) {
+      this.helpers.add("__globals__");
+    }
   }
 
   generateCode(): string {
@@ -299,6 +315,7 @@ export class CodeGenerator {
       forceNewBlock: false,
       isLast: true,
       translate: true,
+      translationCtx: "",
       tKeyExpr: null,
     });
     // define blocks and utility functions
@@ -453,9 +470,9 @@ export class CodeGenerator {
       .join("");
   }
 
-  translate(str: string): string {
+  translate(str: string, translationCtx: string): string {
     const match = translationRE.exec(str) as any;
-    return match[1] + this.translateFn(match[2]) + match[3];
+    return match[1] + this.translateFn(match[2], translationCtx) + match[3];
   }
 
   /**
@@ -497,6 +514,8 @@ export class CodeGenerator {
         return this.compileTSlot(ast, ctx);
       case ASTType.TTranslation:
         return this.compileTTranslation(ast, ctx);
+      case ASTType.TTranslationContext:
+        return this.compileTTranslationContext(ast, ctx);
       case ASTType.TPortal:
         return this.compileTPortal(ast, ctx);
     }
@@ -538,7 +557,7 @@ export class CodeGenerator {
 
     let value = ast.value;
     if (value && ctx.translate !== false) {
-      value = this.translate(value);
+      value = this.translate(value, ctx.translationCtx);
     }
     if (!ctx.inPreTag) {
       value = value.replace(whitespaceRE, " ");
@@ -627,7 +646,8 @@ export class CodeGenerator {
           }
         }
       } else if (this.translatableAttributes.includes(key)) {
-        attrs[key] = this.translateFn(ast.attrs[key]);
+        const attrTranslationCtx = ast.attrsTranslationCtx?.[key] || ctx.translationCtx;
+        attrs[key] = this.translateFn(ast.attrs[key], attrTranslationCtx);
       } else {
         expr = `"${ast.attrs[key]}"`;
         attrName = key;
@@ -1100,7 +1120,7 @@ export class CodeGenerator {
       let value: string;
       if (ast.defaultValue) {
         const defaultValue = toStringExpression(
-          ctx.translate ? this.translate(ast.defaultValue) : ast.defaultValue
+          ctx.translate ? this.translate(ast.defaultValue, ctx.translationCtx) : ast.defaultValue
         );
         if (ast.value) {
           value = `withDefault(${expr}, ${defaultValue})`;
@@ -1135,9 +1155,15 @@ export class CodeGenerator {
    * "some-prop"       "state"          "'some-prop': ctx['state']"
    * "onClick.bind"    "onClick"        "onClick: bind(ctx, ctx['onClick'])"
    */
-  formatProp(name: string, value: string): string {
+  formatProp(
+    name: string,
+    value: string,
+    attrsTranslationCtx: { [name: string]: string } | null,
+    translationCtx: string
+  ): string {
     if (name.endsWith(".translate")) {
-      value = toStringExpression(this.translateFn(value));
+      const attrTranslationCtx = attrsTranslationCtx?.[name] || translationCtx;
+      value = toStringExpression(this.translateFn(value, attrTranslationCtx));
     } else {
       value = this.captureExpression(value);
     }
@@ -1152,15 +1178,21 @@ export class CodeGenerator {
         case "translate":
           break;
         default:
-          throw new OwlError("Invalid prop suffix");
+          throw new OwlError(`Invalid prop suffix: ${suffix}`);
       }
     }
     name = /^[a-z_]+$/i.test(name) ? name : `'${name}'`;
     return `${name}: ${value || undefined}`;
   }
 
-  formatPropObject(obj: { [prop: string]: any }): string[] {
-    return Object.entries(obj).map(([k, v]) => this.formatProp(k, v));
+  formatPropObject(
+    obj: { [prop: string]: any },
+    attrsTranslationCtx: { [name: string]: string } | null,
+    translationCtx: string
+  ): string[] {
+    return Object.entries(obj).map(([k, v]) =>
+      this.formatProp(k, v, attrsTranslationCtx, translationCtx)
+    );
   }
 
   getPropString(props: string[], dynProps: string | null): string {
@@ -1177,7 +1209,9 @@ export class CodeGenerator {
     let { block } = ctx;
     // props
     const hasSlotsProp = "slots" in (ast.props || {});
-    const props: string[] = ast.props ? this.formatPropObject(ast.props) : [];
+    const props: string[] = ast.props
+      ? this.formatPropObject(ast.props, ast.propsTranslationCtx, ctx.translationCtx)
+      : [];
 
     // slots
     let slotDef: string = "";
@@ -1201,7 +1235,13 @@ export class CodeGenerator {
           params.push(`__scope: "${scope}"`);
         }
         if (ast.slots[slotName].attrs) {
-          params.push(...this.formatPropObject(ast.slots[slotName].attrs!));
+          params.push(
+            ...this.formatPropObject(
+              ast.slots[slotName].attrs!,
+              ast.slots[slotName].attrsTranslationCtx,
+              ctx.translationCtx
+            )
+          );
         }
         const slotInfo = `{${params.join(", ")}}`;
         slotStr.push(`'${slotName}': ${slotInfo}`);
@@ -1319,16 +1359,17 @@ export class CodeGenerator {
       isMultiple = isMultiple || this.slotNames.has(ast.name);
       this.slotNames.add(ast.name);
     }
-    const dynProps = ast.attrs ? ast.attrs["t-props"] : null;
-    if (ast.attrs) {
-      delete ast.attrs["t-props"];
-    }
+    const attrs = { ...ast.attrs };
+    const dynProps = attrs["t-props"];
+    delete attrs["t-props"];
     let key = this.target.loopLevel ? `key${this.target.loopLevel}` : "key";
     if (isMultiple) {
       key = this.generateComponentKey(key);
     }
 
-    const props = ast.attrs ? this.formatPropObject(ast.attrs) : [];
+    const props = ast.attrs
+      ? this.formatPropObject(attrs, ast.attrsTranslationCtx, ctx.translationCtx)
+      : [];
     const scope = this.getPropString(props, dynProps);
     if (ast.defaultContent) {
       const name = this.compileInNewTarget("defaultContent", ast.defaultContent, ctx);
@@ -1361,6 +1402,15 @@ export class CodeGenerator {
     }
     return null;
   }
+  compileTTranslationContext(ast: ASTTranslationContext, ctx: Context): string | null {
+    if (ast.content) {
+      return this.compileAST(
+        ast.content,
+        Object.assign({}, ctx, { translationCtx: ast.translationCtx })
+      );
+    }
+    return null;
+  }
   compileTPortal(ast: ASTTPortal, ctx: Context): string {
     if (!this.staticDefs.find((d) => d.id === "Portal")) {
       this.staticDefs.push({ id: "Portal", expr: `app.Portal` });

src/compiler/index.ts

@@ -1,3 +1,4 @@
+import type { customDirectives } from "../common/types";
 import type { TemplateSet } from "../runtime/template_set";
 import type { BDom } from "../runtime/blockdom";
 import { CodeGenerator, Config } from "./code_generator";
@@ -10,13 +11,17 @@ export type TemplateFunction = (app: TemplateSet, bdom: any, helpers: any) => Te
 
 interface CompileOptions extends Config {
   name?: string;
+  customDirectives?: customDirectives;
+  hasGlobalValues: boolean;
 }
 export function compile(
   template: string | Element,
-  options: CompileOptions = {}
+  options: CompileOptions = {
+    hasGlobalValues: false,
+  }
 ): TemplateFunction {
   // parsing
-  const ast = parse(template);
+  const ast = parse(template, options.customDirectives);
 
   // some work
   const hasSafeContext =

src/compiler/inline_expressions.ts

@@ -28,7 +28,7 @@ import { OwlError } from "../common/owl_error";
 //------------------------------------------------------------------------------
 
 const RESERVED_WORDS =
-  "true,false,NaN,null,undefined,debugger,console,window,in,instanceof,new,function,return,eval,void,Math,RegExp,Array,Object,Date".split(
+  "true,false,NaN,null,undefined,debugger,console,window,in,instanceof,new,function,return,eval,void,Math,RegExp,Array,Object,Date,__globals__".split(
     ","
   );
 

src/compiler/parser.ts

@@ -1,4 +1,5 @@
 import { OwlError } from "../common/owl_error";
+import type { customDirectives } from "../common/types";
 import { parseXML } from "../common/utils";
 
 // -----------------------------------------------------------------------------
@@ -26,6 +27,7 @@ export const enum ASTType {
   TSlot,
   TCallBlock,
   TTranslation,
+  TTranslationContext,
   TPortal,
 }
 
@@ -55,6 +57,7 @@ export interface ASTDomNode {
   tag: string;
   content: AST[];
   attrs: Attrs | null;
+  attrsTranslationCtx: Attrs | null;
   ref: string | null;
   on: EventHandlers | null;
   model: TModelInfo | null;
@@ -126,6 +129,7 @@ interface SlotDefinition {
   scope: string | null;
   on: EventHandlers | null;
   attrs: Attrs | null;
+  attrsTranslationCtx: Attrs | null;
 }
 
 export interface ASTComponent {
@@ -135,6 +139,7 @@ export interface ASTComponent {
   dynamicProps: string | null;
   on: EventHandlers | null;
   props: { [name: string]: string } | null;
+  propsTranslationCtx: { [name: string]: string } | null;
   slots: { [name: string]: SlotDefinition } | null;
 }
 
@@ -142,6 +147,7 @@ export interface ASTSlot {
   type: ASTType.TSlot;
   name: string;
   attrs: Attrs | null;
+  attrsTranslationCtx: Attrs | null;
   on: EventHandlers | null;
   defaultContent: AST | null;
 }
@@ -167,6 +173,12 @@ export interface ASTTranslation {
   content: AST | null;
 }
 
+export interface ASTTranslationContext {
+  type: ASTType.TTranslationContext;
+  content: AST | null;
+  translationCtx: string;
+}
+
 export interface ASTTPortal {
   type: ASTType.TPortal;
   target: string;
@@ -191,6 +203,7 @@ export type AST =
   | ASTLog
   | ASTDebug
   | ASTTranslation
+  | ASTTranslationContext
   | ASTTPortal;
 
 // -----------------------------------------------------------------------------
@@ -198,23 +211,26 @@ export type AST =
 // -----------------------------------------------------------------------------
 const cache: WeakMap<Element, AST> = new WeakMap();
 
-export function parse(xml: string | Element): AST {
+export function parse(xml: string | Element, customDir?: customDirectives): AST {
+  const ctx = {
+    inPreTag: false,
+    customDirectives: customDir,
+  };
   if (typeof xml === "string") {
     const elem = parseXML(`<t>${xml}</t>`).firstChild as Element;
-    return _parse(elem);
+    return _parse(elem, ctx);
   }
   let ast = cache.get(xml);
   if (!ast) {
     // we clone here the xml to prevent modifying it in place
-    ast = _parse(xml.cloneNode(true) as Element);
+    ast = _parse(xml.cloneNode(true) as Element, ctx);
     cache.set(xml, ast);
   }
   return ast;
 }
 
-function _parse(xml: Element): AST {
+function _parse(xml: Element, ctx: ParsingContext): AST {
   normalizeXML(xml);
-  const ctx = { inPreTag: false };
   return parseNode(xml, ctx) || { type: ASTType.Text, value: "" };
 }
 
@@ -222,6 +238,7 @@ interface ParsingContext {
   tModelInfo?: TModelInfo | null;
   nameSpace?: string;
   inPreTag: boolean;
+  customDirectives?: customDirectives;
 }
 
 function parseNode(node: Node, ctx: ParsingContext): AST | null {
@@ -229,16 +246,18 @@ function parseNode(node: Node, ctx: ParsingContext): AST | null {
     return parseTextCommentNode(node, ctx);
   }
   return (
+    parseTCustom(node, ctx) ||
     parseTDebugLog(node, ctx) ||
     parseTForEach(node, ctx) ||
     parseTIf(node, ctx) ||
     parseTPortal(node, ctx) ||
     parseTCall(node, ctx) ||
     parseTCallBlock(node, ctx) ||
+    parseTTranslation(node, ctx) ||
+    parseTTranslationContext(node, ctx) ||
     parseTEscNode(node, ctx) ||
     parseTOutNode(node, ctx) ||
     parseTKey(node, ctx) ||
-    parseTTranslation(node, ctx) ||
     parseTSlot(node, ctx) ||
     parseComponent(node, ctx) ||
     parseDOMNode(node, ctx) ||
@@ -277,6 +296,37 @@ function parseTextCommentNode(node: Node, ctx: ParsingContext): AST | null {
   return null;
 }
 
+function parseTCustom(node: Element, ctx: ParsingContext): AST | null {
+  if (!ctx.customDirectives) {
+    return null;
+  }
+  const nodeAttrsNames = node.getAttributeNames();
+  for (let attr of nodeAttrsNames) {
+    if (attr === "t-custom" || attr === "t-custom-") {
+      throw new OwlError("Missing custom directive name with t-custom directive");
+    }
+    if (attr.startsWith("t-custom-")) {
+      const directiveName = attr.split(".")[0].slice(9);
+      const customDirective = ctx.customDirectives[directiveName];
+      if (!customDirective) {
+        throw new OwlError(`Custom directive "${directiveName}" is not defined`);
+      }
+      const value = node.getAttribute(attr)!;
+      const modifiers = attr.split(".").slice(1);
+      node.removeAttribute(attr);
+      try {
+        customDirective(node, value, modifiers);
+      } catch (error) {
+        throw new OwlError(
+          `Custom directive "${directiveName}" throw the following error: ${error}`
+        );
+      }
+      return parseNode(node, ctx);
+    }
+  }
+  return null;
+}
+
 // -----------------------------------------------------------------------------
 // debugging
 // -----------------------------------------------------------------------------
@@ -331,6 +381,7 @@ function parseDOMNode(node: Element, ctx: ParsingContext): AST | null {
 
   const nodeAttrsNames = node.getAttributeNames();
   let attrs: ASTDomNode["attrs"] = null;
+  let attrsTranslationCtx: ASTDomNode["attrsTranslationCtx"] = null;
   let on: EventHandlers | null = null;
   let model: TModelInfo | null = null;
 
@@ -391,6 +442,10 @@ function parseDOMNode(node: Element, ctx: ParsingContext): AST | null {
       throw new OwlError(`Invalid attribute: '${attr}'`);
     } else if (attr === "xmlns") {
       ns = value;
+    } else if (attr.startsWith("t-translation-context-")) {
+      const attrName = attr.slice(22);
+      attrsTranslationCtx = attrsTranslationCtx || {};
+      attrsTranslationCtx[attrName] = value;
     } else if (attr !== "t-name") {
       if (attr.startsWith("t-") && !attr.startsWith("t-att")) {
         throw new OwlError(`Unknown QWeb directive: '${attr}'`);
@@ -413,6 +468,7 @@ function parseDOMNode(node: Element, ctx: ParsingContext): AST | null {
     tag: tagName,
     dynamicTag,
     attrs,
+    attrsTranslationCtx,
     on,
     ref,
     content: children,
@@ -572,7 +628,15 @@ function parseTCall(node: Element, ctx: ParsingContext): AST | null {
     if (ast && ast.type === ASTType.TComponent) {
       return {
         ...ast,
-        slots: { default: { content: tcall, scope: null, on: null, attrs: null } },
+        slots: {
+          default: {
+            content: tcall,
+            scope: null,
+            on: null,
+            attrs: null,
+            attrsTranslationCtx: null,
+          },
+        },
       };
     }
   }
@@ -707,9 +771,14 @@ function parseComponent(node: Element, ctx: ParsingContext): AST | null {
   let on: ASTComponent["on"] = null;
 
   let props: ASTComponent["props"] = null;
+  let propsTranslationCtx: ASTComponent["propsTranslationCtx"] = null;
   for (let name of node.getAttributeNames()) {
     const value = node.getAttribute(name)!;
-    if (name.startsWith("t-")) {
+    if (name.startsWith("t-translation-context-")) {
+      const attrName = name.slice(22);
+      propsTranslationCtx = propsTranslationCtx || {};
+      propsTranslationCtx[attrName] = value;
+    } else if (name.startsWith("t-")) {
       if (name.startsWith("t-on-")) {
         on = on || {};
         on[name.slice(5)] = value;
@@ -757,12 +826,17 @@ function parseComponent(node: Element, ctx: ParsingContext): AST | null {
       const slotAst = parseNode(slotNode, ctx);
       let on: SlotDefinition["on"] = null;
       let attrs: Attrs | null = null;
+      let attrsTranslationCtx: Attrs | null = null;
       let scope: string | null = null;
       for (let attributeName of slotNode.getAttributeNames()) {
         const value = slotNode.getAttribute(attributeName)!;
         if (attributeName === "t-slot-scope") {
           scope = value;
           continue;
+        } else if (attributeName.startsWith("t-translation-context-")) {
+          const attrName = attributeName.slice(22);
+          attrsTranslationCtx = attrsTranslationCtx || {};
+          attrsTranslationCtx[attrName] = value;
         } else if (attributeName.startsWith("t-on-")) {
           on = on || {};
           on[attributeName.slice(5)] = value;
@@ -772,7 +846,7 @@ function parseComponent(node: Element, ctx: ParsingContext): AST | null {
         }
       }
       slots = slots || {};
-      slots[name] = { content: slotAst, on, attrs, scope };
+      slots[name] = { content: slotAst, on, attrs, attrsTranslationCtx, scope };
     }
 
     // default slot
@@ -780,10 +854,25 @@ function parseComponent(node: Element, ctx: ParsingContext): AST | null {
     slots = slots || {};
     // t-set-slot="default" has priority over content
     if (defaultContent && !slots.default) {
-      slots.default = { content: defaultContent, on, attrs: null, scope: defaultSlotScope };
+      slots.default = {
+        content: defaultContent,
+        on,
+        attrs: null,
+        attrsTranslationCtx: null,
+        scope: defaultSlotScope,
+      };
     }
   }
-  return { type: ASTType.TComponent, name, isDynamic, dynamicProps, props, slots, on };
+  return {
+    type: ASTType.TComponent,
+    name,
+    isDynamic,
+    dynamicProps,
+    props,
+    propsTranslationCtx,
+    slots,
+    on,
+  };
 }
 
 // -----------------------------------------------------------------------------
@@ -797,12 +886,17 @@ function parseTSlot(node: Element, ctx: ParsingContext): AST | null {
   const name = node.getAttribute("t-slot")!;
   node.removeAttribute("t-slot");
   let attrs: Attrs | null = null;
+  let attrsTranslationCtx: Attrs | null = null;
   let on: ASTComponent["on"] = null;
   for (let attributeName of node.getAttributeNames()) {
     const value = node.getAttribute(attributeName)!;
     if (attributeName.startsWith("t-on-")) {
       on = on || {};
       on[attributeName.slice(5)] = value;
+    } else if (attributeName.startsWith("t-translation-context-")) {
+      const attrName = attributeName.slice(22);
+      attrsTranslationCtx = attrsTranslationCtx || {};
+      attrsTranslationCtx[attrName] = value;
     } else {
       attrs = attrs || {};
       attrs[attributeName] = value;
@@ -812,11 +906,16 @@ function parseTSlot(node: Element, ctx: ParsingContext): AST | null {
     type: ASTType.TSlot,
     name,
     attrs,
+    attrsTranslationCtx,
     on,
     defaultContent: parseChildNodes(node, ctx),
   };
 }
 
+// -----------------------------------------------------------------------------
+// Translation
+// -----------------------------------------------------------------------------
+
 function parseTTranslation(node: Element, ctx: ParsingContext): AST | null {
   if (node.getAttribute("t-translation") !== "off") {
     return null;
@@ -828,6 +927,23 @@ function parseTTranslation(node: Element, ctx: ParsingContext): AST | null {
   };
 }
 
+// -----------------------------------------------------------------------------
+// Translation Context
+// -----------------------------------------------------------------------------
+
+function parseTTranslationContext(node: Element, ctx: ParsingContext): AST | null {
+  const translationCtx = node.getAttribute("t-translation-context");
+  if (!translationCtx) {
+    return null;
+  }
+  node.removeAttribute("t-translation-context");
+  return {
+    type: ASTType.TTranslationContext,
+    content: parseNode(node, ctx),
+    translationCtx,
+  };
+}
+
 // -----------------------------------------------------------------------------
 // Portal
 // -----------------------------------------------------------------------------

src/compiler/standalone/index.ts

@@ -0,0 +1,89 @@
+// -----------------------------------------------------------------------------
+// This file exports a function that allows compiling templates ahead of time.
+// It is used by the "compile_owl_template" command registered in the "bin"
+// section of owl's package.json
+// -----------------------------------------------------------------------------
+
+import { readdir, readFile, stat } from "fs/promises";
+import path from "path";
+import "./setup_jsdom";
+// Owl imports must be made after setting up jsdom in the global namespace
+import { compile } from "..";
+
+// -----------------------------------------------------------------------------
+// helpers
+// -----------------------------------------------------------------------------
+async function getXmlFiles(paths: string[]): Promise<string[]> {
+  return (
+    await Promise.all(
+      paths.map(async (file) => {
+        const stats = await stat(path.join(file));
+        if (stats.isDirectory()) {
+          return await getXmlFiles(
+            (await readdir(file)).map((fileName) => path.join(file, fileName))
+          );
+        }
+        if (file.endsWith(".xml")) {
+          return file;
+        }
+        return [];
+      })
+    )
+  ).flat();
+}
+
+// adapted from https://medium.com/@mhagemann/the-ultimate-way-to-slugify-a-url-string-in-javascript-b8e4a0d849e1
+const a = "·-_,:;";
+const p = new RegExp(a.split("").join("|"), "g");
+
+function slugify(str: string) {
+  return str
+    .replace(/\//g, "") // remove /
+    .replace(/\./g, "_") // Replace . with _
+    .replace(p, (c) => "_") // Replace special characters
+    .replace(/&/g, "_and_") // Replace & with ‘and’
+    .replace(/[^\w\-]+/g, ""); // Remove all non-word characters
+}
+
+// -----------------------------------------------------------------------------
+// main
+// -----------------------------------------------------------------------------
+
+export async function compileTemplates(paths: string[]) {
+  const files = await getXmlFiles(paths);
+  process.stdout.write(`Processing ${files.length} files`);
+  let xmlStrings = await Promise.all(files.map((file) => readFile(file, "utf8")));
+
+  const templates = [];
+  const errors = [];
+
+  for (let i = 0; i < files.length; i++) {
+    const fileName = files[i];
+    const fileContent = xmlStrings[i];
+    process.stdout.write(`.`);
+    const parser = new DOMParser();
+    const doc = parser.parseFromString(fileContent, "text/xml");
+    for (const template of doc.querySelectorAll("[t-name]")) {
+      const name = template.getAttribute("t-name");
+      if (template.hasAttribute("owl")) {
+        template.removeAttribute("owl");
+      }
+      const fnName = slugify(name!);
+      try {
+        const fn = compile(template).toString().replace("anonymous", fnName);
+        templates.push(`"${name}": ${fn},\n`);
+      } catch (e) {
+        errors.push({ name, fileName, e });
+      }
+    }
+  }
+  process.stdout.write(`\n`);
+
+  for (let { name, fileName, e } of errors) {
+    console.warn(`Error while compiling '${name}' (in file ${fileName})`);
+    console.error(e);
+  }
+  console.log(`${templates.length} templates compiled`);
+
+  return `export const templates = {\n ${templates.join("\n")} \n}`;
+}

src/compiler/standalone/setup_jsdom.ts

@@ -0,0 +1,13 @@
+import jsdom from "jsdom";
+
+// -----------------------------------------------------------------------------
+// add global DOM stuff for compiler. Needs to be in a separate file so rollup
+// doesn't hoist the owl imports above this block of code.
+// -----------------------------------------------------------------------------
+var document = new jsdom.JSDOM("", {});
+var window = document.window;
+global.document = window.document;
+global.window = window as unknown as Window & typeof globalThis;
+global.DOMParser = window.DOMParser;
+global.Element = window.Element;
+global.Node = window.Node;

src/index.ts

@@ -12,5 +12,7 @@ TemplateSet.prototype._compileTemplate = function _compileTemplate(
     dev: this.dev,
     translateFn: this.translateFn,
     translatableAttributes: this.translatableAttributes,
+    customDirectives: this.customDirectives,
+    hasGlobalValues: this.hasGlobalValues,
   });
 };

src/runtime/app.ts

@@ -1,6 +1,6 @@
 import { version } from "../version";
 import { Component, ComponentConstructor, Props } from "./component";
-import { ComponentNode } from "./component_node";
+import { ComponentNode, saveCurrent } from "./component_node";
 import { nodeErrorHandlers, handleError } from "./error_handling";
 import { OwlError } from "../common/owl_error";
 import { Fiber, RootFiber, MountOptions } from "./fibers";
@@ -16,25 +16,19 @@ export interface Env {
   [key: string]: any;
 }
 
-export interface AppConfig<P, E> extends TemplateSetConfig {
-  name?: string;
+export interface RootConfig<P, E> {
   props?: P;
   env?: E;
+}
+
+export interface AppConfig<P, E> extends TemplateSetConfig, RootConfig<P, E> {
+  name?: string;
   test?: boolean;
   warnIfNoStaticProps?: boolean;
 }
 
 let hasBeenLogged = false;
 
-export const DEV_MSG = () => {
-  const hash = (window as any).owl ? (window as any).owl.__info__.hash : "master";
-
-  return `Owl is running in 'dev' mode.
-
-This is not suitable for production use.
-See https://github.com/odoo/owl/blob/${hash}/doc/reference/app.md#configuration for more information.`;
-};
-
 const apps = new Set<App>();
 
 declare global {
@@ -49,6 +43,12 @@ declare global {
   }
 }
 
+interface Root<P extends Props, E> {
+  node: ComponentNode<P, E>;
+  mount(target: HTMLElement | ShadowRoot, options?: MountOptions): Promise<Component<P, E>>;
+  destroy(): void;
+}
+
 window.__OWL_DEVTOOLS__ ||= { apps, Fiber, RootFiber, toRaw, reactive };
 
 export class App<
@@ -65,6 +65,7 @@ export class App<
   props: P;
   env: E;
   scheduler = new Scheduler();
+  subRoots: Set<ComponentNode> = new Set();
   root: ComponentNode<P, E> | null = null;
   warnIfNoStaticProps: boolean;
 
@@ -78,7 +79,7 @@ export class App<
     }
     this.warnIfNoStaticProps = config.warnIfNoStaticProps || false;
     if (this.dev && !config.test && !hasBeenLogged) {
-      console.info(DEV_MSG());
+      console.info(`Owl is running in 'dev' mode.`);
       hasBeenLogged = true;
     }
     const env = config.env || {};
@@ -91,14 +92,49 @@ export class App<
     target: HTMLElement | ShadowRoot,
     options?: MountOptions
   ): Promise<Component<P, E> & InstanceType<T>> {
-    App.validateTarget(target);
-    if (this.dev) {
-      validateProps(this.Root, this.props, { __owl__: { app: this } });
+    const root = this.createRoot(this.Root, { props: this.props });
+    this.root = root.node;
+    this.subRoots.delete(root.node);
+    return root.mount(target, options) as any;
+  }
+
+  createRoot<Props extends object, SubEnv = any>(
+    Root: ComponentConstructor<Props, E>,
+    config: RootConfig<Props, SubEnv> = {}
+  ): Root<Props, SubEnv> {
+    const props = config.props || ({} as Props);
+    // hack to make sure the sub root get the sub env if necessary. for owl 3,
+    // would be nice to rethink the initialization process to make sure that
+    // we can create a ComponentNode and give it explicitely the env, instead
+    // of looking it up in the app
+    const env = this.env;
+    if (config.env) {
+      this.env = config.env as any;
     }
-    const node = this.makeNode(this.Root, this.props);
-    const prom = this.mountNode(node, target, options);
-    this.root = node;
-    return prom;
+
+    const restore = saveCurrent();
+    const node = this.makeNode(Root, props);
+    restore();
+    if (config.env) {
+      this.env = env;
+    }
+    this.subRoots.add(node);
+    return {
+      node,
+      mount: (target: HTMLElement | ShadowRoot, options?: MountOptions) => {
+        App.validateTarget(target);
+        if (this.dev) {
+          validateProps(Root, props, { __owl__: { app: this } });
+        }
+        const prom = this.mountNode(node, target, options);
+        return prom;
+      },
+      destroy: () => {
+        this.subRoots.delete(node);
+        node.destroy();
+        this.scheduler.processTasks();
+      },
+    };
   }
 
   makeNode(Component: ComponentConstructor, props: any): ComponentNode {
@@ -134,6 +170,9 @@ export class App<
 
   destroy() {
     if (this.root) {
+      for (let subroot of this.subRoots) {
+        subroot.destroy();
+      }
       this.root.destroy();
       this.scheduler.processTasks();
     }

src/runtime/component_node.ts

@@ -10,6 +10,13 @@ import { batched, Callback } from "./utils";
 
 let currentNode: ComponentNode | null = null;
 
+export function saveCurrent() {
+  let n = currentNode;
+  return () => {
+    currentNode = n;
+  };
+}
+
 export function getCurrent(): ComponentNode {
   if (!currentNode) {
     throw new OwlError("No active component (a hook function should only be called in 'setup')");

src/runtime/fibers.ts

@@ -30,6 +30,13 @@ export function makeRootFiber(node: ComponentNode): Fiber {
       fibersInError.delete(current);
       fibersInError.delete(root);
       current.appliedToDom = false;
+      if (current instanceof RootFiber) {
+        // it is possible that this fiber is a fiber that crashed while being
+        // mounted, so the mounted list is possibly corrupted. We restore it to
+        // its normal initial state (which is empty list or a list with a mount
+        // fiber.
+        current.mounted = current instanceof MountFiber ? [current] : [];
+      }
     }
     return current;
   }
@@ -152,6 +159,7 @@ export class RootFiber extends Fiber {
     const node = this.node;
     this.locked = true;
     let current: Fiber | undefined = undefined;
+    let mountedFibers = this.mounted;
     try {
       // Step 1: calling all willPatch lifecycle hooks
       for (current of this.willPatch) {
@@ -173,7 +181,6 @@ export class RootFiber extends Fiber {
       this.locked = false;
 
       // Step 4: calling all mounted lifecycle hooks
-      let mountedFibers = this.mounted;
       while ((current = mountedFibers.pop())) {
         current = current;
         if (current.appliedToDom) {
@@ -194,6 +201,15 @@ export class RootFiber extends Fiber {
         }
       }
     } catch (e) {
+      // if mountedFibers is not empty, this means that a crash occured while
+      // calling the mounted hooks of some component. So, there may still be
+      // some component that have been mounted, but for which the mounted hooks
+      // have not been called. Here, we remove the willUnmount hooks for these
+      // specific component to prevent a worse situation (willUnmount being
+      // called even though mounted has not been called)
+      for (let fiber of mountedFibers) {
+        fiber.node.willUnmount = [];
+      }
       this.locked = false;
       node.app.handleError({ fiber: current || this, error: e });
     }

src/runtime/index.ts

@@ -41,7 +41,7 @@ export { useComponent, useState } from "./component_node";
 export { status } from "./status";
 export { reactive, markRaw, toRaw } from "./reactivity";
 export { useEffect, useEnv, useExternalListener, useRef, useChildSubEnv, useSubEnv } from "./hooks";
-export { batched, EventBus, whenReady, loadFile, markup } from "./utils";
+export { batched, EventBus, htmlEscape, whenReady, loadFile, markup } from "./utils";
 export {
   onWillStart,
   onMounted,

src/runtime/lifecycle_hooks.ts

@@ -3,42 +3,50 @@ import { nodeErrorHandlers } from "./error_handling";
 import { OwlError } from "../common/owl_error";
 
 const TIMEOUT = Symbol("timeout");
+const HOOK_TIMEOUT: { [key: string]: number } = {
+  onWillStart: 3000,
+  onWillUpdateProps: 3000,
+};
 function wrapError(fn: (...args: any[]) => any, hookName: string) {
-  const error = new OwlError(`The following error occurred in ${hookName}: `) as Error & {
+  const error = new OwlError() as Error & {
     cause: any;
   };
-  const timeoutError = new OwlError(`${hookName}'s promise hasn't resolved after 3 seconds`);
+  const timeoutError = new OwlError();
   const node = getCurrent();
   return (...args: any[]) => {
     const onError = (cause: any) => {
       error.cause = cause;
-      if (cause instanceof Error) {
-        error.message += `"${cause.message}"`;
-      } else {
-        error.message = `Something that is not an Error was thrown in ${hookName} (see this Error's "cause" property)`;
-      }
+      error.message =
+        cause instanceof Error
+          ? `The following error occurred in ${hookName}: "${cause.message}"`
+          : `Something that is not an Error was thrown in ${hookName} (see this Error's "cause" property)`;
       throw error;
     };
+    let result;
     try {
-      const result = fn(...args);
-      if (result instanceof Promise) {
-        if (hookName === "onWillStart" || hookName === "onWillUpdateProps") {
-          const fiber = node.fiber;
-          Promise.race([
-            result.catch(() => {}),
-            new Promise((resolve) => setTimeout(() => resolve(TIMEOUT), 3000)),
-          ]).then((res) => {
-            if (res === TIMEOUT && node.fiber === fiber && node.status <= 2) {
-              console.warn(timeoutError);
-            }
-          });
-        }
-        return result.catch(onError);
-      }
-      return result;
+      result = fn(...args);
     } catch (cause) {
       onError(cause);
     }
+    if (!(result instanceof Promise)) {
+      return result;
+    }
+    const timeout = HOOK_TIMEOUT[hookName];
+    if (timeout) {
+      const fiber = node.fiber;
+      Promise.race([
+        result.catch(() => {}),
+        new Promise((resolve) => setTimeout(() => resolve(TIMEOUT), timeout)),
+      ]).then((res) => {
+        if (res === TIMEOUT && node.fiber === fiber && node.status <= 2) {
+          timeoutError.message = `${hookName}'s promise hasn't resolved after ${
+            timeout / 1000
+          } seconds`;
+          console.log(timeoutError);
+        }
+      });
+    }
+    return result.catch(onError);
   };
 }
 

src/runtime/scheduler.ts

@@ -16,6 +16,7 @@ export class Scheduler {
   frame: number = 0;
   delayedRenders: Fiber[] = [];
   cancelledNodes: Set<ComponentNode> = new Set();
+  processing = false;
 
   constructor() {
     this.requestAnimationFrame = Scheduler.requestAnimationFrame;
@@ -53,6 +54,10 @@ export class Scheduler {
   }
 
   processTasks() {
+    if (this.processing) {
+      return;
+    }
+    this.processing = true;
     this.frame = 0;
     for (let node of this.cancelledNodes) {
       node._destroy();
@@ -66,6 +71,7 @@ export class Scheduler {
         this.tasks.delete(task);
       }
     }
+    this.processing = false;
   }
 
   processFiber(fiber: RootFiber) {
@@ -87,7 +93,14 @@ export class Scheduler {
       if (!hasError) {
         fiber.complete();
       }
-      this.tasks.delete(fiber);
+      // at this point, the fiber should have been applied to the DOM, so we can
+      // remove it from the task list. If it is not the case, it means that there
+      // was an error and an error handler triggered a new rendering that recycled
+      // the fiber, so in that case, we actually want to keep the fiber around,
+      // otherwise it will just be ignored.
+      if (fiber.appliedToDom) {
+        this.tasks.delete(fiber);
+      }
     }
   }
 }

src/runtime/template_set.ts

@@ -5,15 +5,18 @@ import { Portal, portalTemplate } from "./portal";
 import { helpers } from "./template_helpers";
 import { OwlError } from "../common/owl_error";
 import { parseXML } from "../common/utils";
+import type { customDirectives } from "../common/types";
 
 const bdom = { text, createBlock, list, multi, html, toggler, comment };
 
 export interface TemplateSetConfig {
   dev?: boolean;
   translatableAttributes?: string[];
-  translateFn?: (s: string) => string;
+  translateFn?: (s: string, translationCtx: string) => string;
   templates?: string | Document | Record<string, string>;
   getTemplate?: (s: string) => Element | Function | string | void;
+  customDirectives?: customDirectives;
+  globalValues?: object;
 }
 
 export class TemplateSet {
@@ -24,9 +27,12 @@ export class TemplateSet {
   rawTemplates: typeof globalTemplates = Object.create(globalTemplates);
   templates: { [name: string]: Template } = {};
   getRawTemplate?: (s: string) => Element | Function | string | void;
-  translateFn?: (s: string) => string;
+  translateFn?: (s: string, translationCtx: string) => string;
   translatableAttributes?: string[];
   Portal = Portal;
+  customDirectives: customDirectives;
+  runtimeUtils: object;
+  hasGlobalValues: boolean;
 
   constructor(config: TemplateSetConfig = {}) {
     this.dev = config.dev || false;
@@ -42,6 +48,9 @@ export class TemplateSet {
       }
     }
     this.getRawTemplate = config.getTemplate;
+    this.customDirectives = config.customDirectives || {};
+    this.runtimeUtils = { ...helpers, __globals__: config.globalValues || {} };
+    this.hasGlobalValues = Boolean(config.globalValues && Object.keys(config.globalValues).length);
   }
 
   addTemplate(name: string, template: string | Element) {
@@ -97,7 +106,7 @@ export class TemplateSet {
       this.templates[name] = function (context, parent) {
         return templates[name].call(this, context, parent);
       };
-      const template = templateFn(this, bdom, helpers);
+      const template = templateFn(this, bdom, this.runtimeUtils);
       this.templates[name] = template;
     }
     return this.templates[name];

src/runtime/utils.ts

@@ -35,13 +35,43 @@ export function inOwnerDocument(el?: HTMLElement) {
   return rootNode instanceof ShadowRoot && el.ownerDocument.contains(rootNode.host);
 }
 
+/**
+ * Determine whether the given element is contained in a specific root documnet:
+ * either directly or with a shadow root in between or in an iframe.
+ */
+function isAttachedToDocument(
+  element: HTMLElement | ShadowRoot,
+  documentElement: Document
+): boolean {
+  let current: Node = element;
+  const shadowRoot = documentElement.defaultView!.ShadowRoot;
+  while (current) {
+    if (current === documentElement) {
+      return true;
+    }
+    if (current.parentNode) {
+      current = current.parentNode;
+    } else if (current instanceof shadowRoot && current.host) {
+      current = current.host;
+    } else {
+      return false;
+    }
+  }
+  return false;
+}
+
 export function validateTarget(target: HTMLElement | ShadowRoot) {
   // Get the document and HTMLElement corresponding to the target to allow mounting in iframes
   const document = target && target.ownerDocument;
   if (document) {
-    const HTMLElement = document.defaultView!.HTMLElement;
+    if (!document.defaultView) {
+      throw new OwlError(
+        "Cannot mount a component: the target document is not attached to a window (defaultView is missing)"
+      );
+    }
+    const HTMLElement = document.defaultView.HTMLElement;
     if (target instanceof HTMLElement || target instanceof ShadowRoot) {
-      if (!document.body.contains(target instanceof HTMLElement ? target : target.host)) {
+      if (!isAttachedToDocument(target, document)) {
         throw new OwlError("Cannot mount a component on a detached dom node");
       }
       return;
@@ -81,10 +111,50 @@ export async function loadFile(url: string): Promise<string> {
  */
 export class Markup extends String {}
 
+export function htmlEscape(str: any): Markup {
+  if (str instanceof Markup) {
+    return str;
+  }
+  if (str === undefined) {
+    return markup("");
+  }
+  if (typeof str === "number") {
+    return markup(String(str));
+  }
+  [
+    ["&", "&amp;"],
+    ["<", "&lt;"],
+    [">", "&gt;"],
+    ["'", "&#x27;"],
+    ['"', "&quot;"],
+    ["`", "&#x60;"],
+  ].forEach((pairs) => {
+    str = String(str).replace(new RegExp(pairs[0], "g"), pairs[1]);
+  });
+  return markup(str);
+}
+
 /*
  * Marks a value as safe, that is, a value that can be injected as HTML directly.
  * It should be used to wrap the value passed to a t-out directive to allow a raw rendering.
+ *
+ * If called as a tag function, the interpolated strings are escaped.
  */
-export function markup(value: any) {
-  return new Markup(value);
+export function markup(strings: TemplateStringsArray, ...placeholders: unknown[]): Markup;
+export function markup(value: string): Markup;
+export function markup(
+  valueOrStrings: string | TemplateStringsArray,
+  ...placeholders: unknown[]
+): Markup {
+  if (!Array.isArray(valueOrStrings)) {
+    return new Markup(valueOrStrings);
+  }
+  const strings = valueOrStrings;
+  let acc = "";
+  let i = 0;
+  for (; i < placeholders.length; ++i) {
+    acc += strings[i] + htmlEscape(placeholders[i]);
+  }
+  acc += strings[i];
+  return new Markup(acc);
 }

src/version.ts

@@ -1,2 +1,2 @@
 // do not modify manually. This file is generated by the release script.
-export const version = "2.3.0";
+export const version = "2.8.0";

tests/app/__snapshots__/app.test.ts.snap

@@ -43,6 +43,48 @@ exports[`app app: clear scheduler tasks and destroy cancelled nodes immediately
 }"
 `;
 
+exports[`app can add functions to the bdom 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  let { __globals__ } = helpers;
+  
+  let block1 = createBlock(\`<div class=\\"my-div\\" block-handler-0=\\"click\\"/>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    let hdlr1 = [()=>__globals__.plop('click'), ctx];
+    return block1([hdlr1]);
+  }
+}"
+`;
+
+exports[`app can call processTask twice in a row without crashing 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  const comp1 = app.createComponent(\`Child\`, true, false, false, []);
+  
+  return function template(ctx, node, key = \\"\\") {
+    const b2 = text(\`parent\`);
+    const b3 = comp1({}, key + \`__1\`, node, this, null);
+    return multi([b2, b3]);
+  }
+}"
+`;
+
+exports[`app can call processTask twice in a row without crashing 2`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<div/>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    return block1();
+  }
+}"
+`;
+
 exports[`app can configure an app with props 1`] = `
 "function anonymous(app, bdom, helpers
 ) {

tests/app/__snapshots__/sub_root.test.ts.snap

@@ -0,0 +1,210 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`destroy a subroot while another component is mounted in main app 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  const comp1 = app.createComponent(\`ChildB\`, true, false, false, []);
+  const comp2 = app.createComponent(\`ChildA\`, true, false, false, []);
+  
+  return function template(ctx, node, key = \\"\\") {
+    let b2, b3;
+    if (ctx['state'].flag) {
+      b2 = comp1({}, key + \`__1\`, node, this, null);
+    } else {
+      b3 = comp2({}, key + \`__2\`, node, this, null);
+    }
+    return multi([b2, b3]);
+  }
+}"
+`;
+
+exports[`destroy a subroot while another component is mounted in main app 2`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block3 = createBlock(\`<div block-ref=\\"0\\"/>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    const b2 = text(\`a\`);
+    let ref1 = (el) => this.__owl__.setRef((\`elem\`), el);
+    const b3 = block3([ref1]);
+    return multi([b2, b3]);
+  }
+}"
+`;
+
+exports[`destroy a subroot while another component is mounted in main app 3`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  return function template(ctx, node, key = \\"\\") {
+    return text(\`c\`);
+  }
+}"
+`;
+
+exports[`destroy a subroot while another component is mounted in main app 4`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  return function template(ctx, node, key = \\"\\") {
+    return text(\`b\`);
+  }
+}"
+`;
+
+exports[`subroot by default, env is the same in sub root 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<div>main app</div>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    return block1();
+  }
+}"
+`;
+
+exports[`subroot by default, env is the same in sub root 2`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<div>sub root</div>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    return block1();
+  }
+}"
+`;
+
+exports[`subroot can create a root in a setup function, then use a hook 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  return function template(ctx, node, key = \\"\\") {
+    return text(\`a\`);
+  }
+}"
+`;
+
+exports[`subroot can create a root in a setup function, then use a hook 2`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  return function template(ctx, node, key = \\"\\") {
+    return text(\`c\`);
+  }
+}"
+`;
+
+exports[`subroot can mount subroot 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<div>main app</div>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    return block1();
+  }
+}"
+`;
+
+exports[`subroot can mount subroot 2`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<div>sub root</div>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    return block1();
+  }
+}"
+`;
+
+exports[`subroot can mount subroot inside own dom 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<div>main app</div>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    return block1();
+  }
+}"
+`;
+
+exports[`subroot can mount subroot inside own dom 2`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<div>sub root</div>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    return block1();
+  }
+}"
+`;
+
+exports[`subroot env can be specified for sub roots 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<div>main app</div>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    return block1();
+  }
+}"
+`;
+
+exports[`subroot env can be specified for sub roots 2`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<div>sub root</div>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    return block1();
+  }
+}"
+`;
+
+exports[`subroot subcomponents can be destroyed, and it properly cleanup the subroots 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<div>main app</div>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    return block1();
+  }
+}"
+`;
+
+exports[`subroot subcomponents can be destroyed, and it properly cleanup the subroots 2`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<div>sub root</div>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    return block1();
+  }
+}"
+`;

tests/app/app.test.ts

@@ -1,4 +1,4 @@
-import { App, Component, mount, onWillStart, useState, xml } from "../../src";
+import { App, Component, mount, onWillPatch, onWillStart, useState, xml } from "../../src";
 import { status } from "../../src/runtime/status";
 import {
   makeTestFixture,
@@ -184,4 +184,39 @@ describe("app", () => {
     expect(Object.keys(app.templates)).toEqual(["hello"]);
     expect(Object.keys(app.rawTemplates)).toEqual(["hello", "world"]);
   });
+
+  test("can call processTask twice in a row without crashing", async () => {
+    class Child extends Component {
+      static template = xml`<div/>`;
+      setup() {
+        onWillPatch(() => app.scheduler.processTasks());
+      }
+    }
+    class SomeComponent extends Component {
+      static template = xml`parent<Child/>`;
+      static components = { Child };
+    }
+
+    const app = new App(SomeComponent);
+    await app.mount(fixture);
+    expect(fixture.innerHTML).toBe("parent<div></div>");
+  });
+
+  test("can add functions to the bdom", async () => {
+    const steps: string[] = [];
+    class SomeComponent extends Component {
+      static template = xml`<div t-on-click="() => __globals__.plop('click')" class="my-div"/>`;
+    }
+    const app = new App(SomeComponent, {
+      globalValues: {
+        plop: (string: any) => {
+          steps.push(string);
+        },
+      },
+    });
+    await app.mount(fixture);
+    expect(fixture.innerHTML).toBe(`<div class="my-div"></div>`);
+    fixture.querySelector("div")!.click();
+    expect(steps).toEqual(["click"]);
+  });
 });

tests/app/sub_root.test.ts

@@ -0,0 +1,176 @@
+import { App, Component, onMounted, onWillDestroy, useRef, useState, xml } from "../../src";
+import { status } from "../../src/runtime/status";
+import { makeTestFixture, nextTick, snapshotEverything } from "../helpers";
+
+let fixture: HTMLElement;
+
+snapshotEverything();
+
+beforeEach(() => {
+  fixture = makeTestFixture();
+});
+
+class SomeComponent extends Component {
+  static template = xml`<div>main app</div>`;
+}
+
+class SubComponent extends Component {
+  static template = xml`<div>sub root</div>`;
+}
+
+describe("subroot", () => {
+  test("can mount subroot", async () => {
+    const app = new App(SomeComponent);
+    const comp = await app.mount(fixture);
+    expect(fixture.innerHTML).toBe("<div>main app</div>");
+    const subRoot = app.createRoot(SubComponent);
+    const subcomp = await subRoot.mount(fixture);
+    expect(fixture.innerHTML).toBe("<div>main app</div><div>sub root</div>");
+
+    app.destroy();
+    expect(fixture.innerHTML).toBe("");
+    expect(status(comp)).toBe("destroyed");
+    expect(status(subcomp)).toBe("destroyed");
+  });
+
+  test("can mount subroot inside own dom", async () => {
+    const app = new App(SomeComponent);
+    const comp = await app.mount(fixture);
+    expect(fixture.innerHTML).toBe("<div>main app</div>");
+    const subRoot = app.createRoot(SubComponent);
+    const subcomp = await subRoot.mount(fixture.querySelector("div")!);
+    expect(fixture.innerHTML).toBe("<div>main app<div>sub root</div></div>");
+
+    app.destroy();
+    expect(fixture.innerHTML).toBe("");
+    expect(status(comp)).toBe("destroyed");
+    expect(status(subcomp)).toBe("destroyed");
+  });
+
+  test("by default, env is the same in sub root", async () => {
+    let env, subenv;
+    class SC extends SomeComponent {
+      setup() {
+        env = this.env;
+      }
+    }
+    class Sub extends SubComponent {
+      setup() {
+        subenv = this.env;
+      }
+    }
+
+    const app = new App(SC);
+    await app.mount(fixture);
+    const subRoot = app.createRoot(Sub);
+    await subRoot.mount(fixture);
+
+    expect(env).toBeDefined();
+    expect(subenv).toBeDefined();
+    expect(env).toBe(subenv);
+  });
+
+  test("env can be specified for sub roots", async () => {
+    const env1 = { env1: true };
+    const env2 = {};
+    let someComponentEnv: any, subComponentEnv: any;
+    class SC extends SomeComponent {
+      setup() {
+        someComponentEnv = this.env;
+      }
+    }
+    class Sub extends SubComponent {
+      setup() {
+        subComponentEnv = this.env;
+      }
+    }
+
+    const app = new App(SC, { env: env1 });
+    await app.mount(fixture);
+    const subRoot = app.createRoot(Sub, { env: env2 });
+    await subRoot.mount(fixture);
+
+    // because env is different in app => it is given a sub object, frozen and all
+    // not sure it is a good idea, but it's the way owl 2 works. maybe we should
+    // avoid doing anything with the main env and let user code do it if they
+    // want. in that case, we can change the test here to assert that they are equal
+    expect(someComponentEnv).not.toBe(env1);
+    expect(someComponentEnv!.env1).toBe(true);
+    expect(subComponentEnv).toBe(env2);
+  });
+
+  test("subcomponents can be destroyed, and it properly cleanup the subroots", async () => {
+    const app = new App(SomeComponent);
+    const comp = await app.mount(fixture);
+    expect(fixture.innerHTML).toBe("<div>main app</div>");
+    const root = app.createRoot(SubComponent);
+    const subcomp = await root.mount(fixture.querySelector("div")!);
+    expect(fixture.innerHTML).toBe("<div>main app<div>sub root</div></div>");
+
+    root.destroy();
+    expect(fixture.innerHTML).toBe("<div>main app</div>");
+    expect(status(comp)).not.toBe("destroyed");
+    expect(status(subcomp)).toBe("destroyed");
+  });
+
+  test("can create a root in a setup function, then use a hook", async () => {
+    class C extends Component {
+      static template = xml`c`;
+    }
+
+    class A extends Component {
+      static template = xml`a`;
+      state: any;
+      setup() {
+        app.createRoot(C);
+        this.state = useState({ value: 1 });
+      }
+    }
+
+    const app = new App(A);
+    await app.mount(fixture);
+    expect(fixture.innerHTML).toBe("a");
+  });
+});
+
+test("destroy a subroot while another component is mounted in main app", async () => {
+  class C extends Component {
+    static template = xml`c`;
+  }
+
+  class ChildA extends Component {
+    static template = xml`a<div t-ref="elem"></div>`;
+    ref: any;
+    setup() {
+      this.ref = useRef("elem");
+      let root = app.createRoot(C);
+      onMounted(() => {
+        root.mount(this.ref.el);
+      });
+      onWillDestroy(() => {
+        root.destroy();
+      });
+    }
+  }
+  class ChildB extends Component {
+    static template = xml`b`;
+  }
+
+  class SomeComponent extends Component {
+    static template = xml`
+        <t t-if="state.flag"><ChildB/></t>
+        <t t-else=""><ChildA/></t>
+        `;
+    static components = { ChildA, ChildB };
+    state = useState({ flag: false });
+  }
+
+  const app = new App(SomeComponent);
+  const comp = await app.mount(fixture);
+  expect(fixture.innerHTML).toBe("a<div></div>");
+  await nextTick();
+  expect(fixture.innerHTML).toBe("a<div>c</div>");
+  comp.state.flag = true;
+  await nextTick();
+  expect(fixture.innerHTML).toBe("b");
+});

tests/compiler/__snapshots__/t_custom.test.ts.snap

@@ -0,0 +1,29 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`t-custom can use t-custom directive on a node 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<div class=\\"my-div\\" block-handler-0=\\"click\\"/>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    let hdlr1 = [ctx['click'], ctx];
+    return block1([hdlr1]);
+  }
+}"
+`;
+
+exports[`t-custom can use t-custom directive with modifiers on a node 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<div class=\\"my-div\\" block-handler-0=\\"click\\"/>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    let hdlr1 = [ctx['click'], ctx];
+    return block1([hdlr1]);
+  }
+}"
+`;

tests/compiler/__snapshots__/t_slot.test.ts.snap

@@ -0,0 +1,13 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`t-slot compile t-props correctly multiple time 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  let { callSlot } = helpers;
+  
+  return function template(ctx, node, key = \\"\\") {
+    return callSlot(ctx, node, key, 'default', false, Object.assign({}, {a:1}));
+  }
+}"
+`;

tests/compiler/__snapshots__/translation.test.ts.snap

@@ -1,5 +1,128 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
+exports[`translation context body of t-sets are translated in context 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  let { isBoundary, withDefault, setContextValue } = helpers;
+  
+  return function template(ctx, node, key = \\"\\") {
+    ctx = Object.create(ctx);
+    ctx[isBoundary] = 1
+    setContextValue(ctx, \\"label\\", \`traduit\`);
+    const b2 = text(ctx['label']);
+    return multi([b2]);
+  }
+}"
+`;
+
+exports[`translation context default slot params and content translated in context 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  let { callSlot } = helpers;
+  
+  let block1 = createBlock(\`<div><block-child-0/></div>\`);
+  
+  function defaultContent1(ctx, node, key = \\"\\") {
+    return text(\` foo \`);
+  }
+  
+  return function template(ctx, node, key = \\"\\") {
+    const b3 = callSlot(ctx, node, key, 'default', false, {param: \`param\`,title: \`título\`}, defaultContent1.bind(this));
+    return block1([], [b3]);
+  }
+}"
+`;
+
+exports[`translation context props with modifier .translate are translated in context 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  const comp1 = app.createComponent(\`ChildComponent\`, true, false, false, []);
+  
+  return function template(ctx, node, key = \\"\\") {
+    return comp1({text: \`jeu\`}, key + \`__1\`, node, this, null);
+  }
+}"
+`;
+
+exports[`translation context props with modifier .translate are translated in context 2`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<span><block-text-0/></span>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    let txt1 = ctx['props'].text;
+    return block1([txt1]);
+  }
+}"
+`;
+
+exports[`translation context slot attrs and text contents are translated in context 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  let { capture, markRaw } = helpers;
+  const comp1 = app.createComponent(\`ChildComponent\`, true, true, false, []);
+  
+  function slot1(ctx, node, key = \\"\\") {
+    return text(\`jeu\`);
+  }
+  
+  return function template(ctx, node, key = \\"\\") {
+    const ctx1 = capture(ctx);
+    return comp1({slots: markRaw({'a': {__render: slot1.bind(this), __ctx: ctx1, title: \`título\`}})}, key + \`__1\`, node, this, null);
+  }
+}"
+`;
+
+exports[`translation context slot attrs and text contents are translated in context 2`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  let { callSlot } = helpers;
+  
+  let block1 = createBlock(\`<div><block-child-0/></div>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    const b2 = callSlot(ctx, node, key, 'a', false, {});
+    return block1([], [b2]);
+  }
+}"
+`;
+
+exports[`translation context translation of attributes in context 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<div title=\\"titre\\" label=\\"game\\"/>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    return block1();
+  }
+}"
+`;
+
+exports[`translation context translation of text in context 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block2 = createBlock(\`<div>word</div>\`);
+  let block3 = createBlock(\`<div>mot</div>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    const b2 = block2();
+    const b3 = block3();
+    return multi([b2, b3]);
+  }
+}"
+`;
+
 exports[`translation support body of t-sets are translated 1`] = `
 "function anonymous(app, bdom, helpers
 ) {

tests/compiler/parser.test.ts

@@ -43,6 +43,7 @@ describe("qweb parser", () => {
       dynamicTag: null,
       content: [],
       attrs: null,
+      attrsTranslationCtx: null,
       on: null,
       ref: null,
       model: null,
@@ -70,6 +71,7 @@ describe("qweb parser", () => {
       tag: "div",
       dynamicTag: null,
       attrs: null,
+      attrsTranslationCtx: null,
       on: null,
       ref: null,
       model: null,
@@ -84,6 +86,7 @@ describe("qweb parser", () => {
       tag: "div",
       dynamicTag: null,
       attrs: null,
+      attrsTranslationCtx: null,
       on: null,
       ref: null,
       model: null,
@@ -98,6 +101,7 @@ describe("qweb parser", () => {
       tag: "div",
       dynamicTag: null,
       attrs: null,
+      attrsTranslationCtx: null,
       on: null,
       ref: null,
       model: null,
@@ -109,6 +113,7 @@ describe("qweb parser", () => {
           tag: "span",
           dynamicTag: null,
           attrs: null,
+          attrsTranslationCtx: null,
           on: null,
           ref: null,
           model: null,
@@ -128,6 +133,7 @@ describe("qweb parser", () => {
           tag: "div",
           dynamicTag: null,
           attrs: null,
+          attrsTranslationCtx: null,
           on: null,
           ref: null,
           model: null,
@@ -139,6 +145,7 @@ describe("qweb parser", () => {
           tag: "span",
           dynamicTag: null,
           attrs: null,
+          attrsTranslationCtx: null,
           on: null,
           ref: null,
           model: null,
@@ -156,6 +163,7 @@ describe("qweb parser", () => {
       tag: "div",
       dynamicTag: null,
       attrs: null,
+      attrsTranslationCtx: null,
       on: null,
       ref: null,
       model: null,
@@ -181,6 +189,7 @@ describe("qweb parser", () => {
       tag: "div",
       dynamicTag: null,
       attrs: null,
+      attrsTranslationCtx: null,
       on: null,
       ref: null,
       model: null,
@@ -201,6 +210,7 @@ describe("qweb parser", () => {
       tag: "div",
       dynamicTag: null,
       attrs: null,
+      attrsTranslationCtx: null,
       on: null,
       ref: null,
       model: null,
@@ -223,6 +233,7 @@ describe("qweb parser", () => {
       tag: "div",
       dynamicTag: null,
       attrs: null,
+      attrsTranslationCtx: null,
       on: null,
       ref: null,
       model: null,
@@ -246,6 +257,7 @@ describe("qweb parser", () => {
           tag: "span",
           dynamicTag: null,
           attrs: null,
+          attrsTranslationCtx: null,
           on: null,
           ref: null,
           model: null,
@@ -262,6 +274,7 @@ describe("qweb parser", () => {
       tag: "div",
       dynamicTag: null,
       attrs: { class: "abc" },
+      attrsTranslationCtx: null,
       on: null,
       ref: null,
       model: null,
@@ -280,6 +293,7 @@ describe("qweb parser", () => {
         height: "90px",
         width: "100px",
       },
+      attrsTranslationCtx: null,
       content: [
         {
           attrs: {
@@ -290,6 +304,7 @@ describe("qweb parser", () => {
             stroke: "green",
             "stroke-width": "1",
           },
+          attrsTranslationCtx: null,
           content: [],
           dynamicTag: null,
           model: null,
@@ -312,6 +327,7 @@ describe("qweb parser", () => {
       parse(`<g><circle cx="50" cy="50" r="4" stroke="green" stroke-width="1" fill="yellow"/></g>`)
     ).toEqual({
       attrs: null,
+      attrsTranslationCtx: null,
       content: [
         {
           attrs: {
@@ -322,6 +338,7 @@ describe("qweb parser", () => {
             stroke: "green",
             "stroke-width": "1",
           },
+          attrsTranslationCtx: null,
           content: [],
           dynamicTag: null,
           model: null,
@@ -348,6 +365,7 @@ describe("qweb parser", () => {
       tag: "div",
       dynamicTag: null,
       attrs: null,
+      attrsTranslationCtx: null,
       on: null,
       ref: null,
       content: [
@@ -356,6 +374,7 @@ describe("qweb parser", () => {
           tag: "pre",
           dynamicTag: null,
           attrs: null,
+          attrsTranslationCtx: null,
           on: null,
           ref: null,
           content: [],
@@ -391,6 +410,7 @@ describe("qweb parser", () => {
       tag: "span",
       dynamicTag: null,
       attrs: null,
+      attrsTranslationCtx: null,
       on: null,
       ref: null,
       model: null,
@@ -413,6 +433,7 @@ describe("qweb parser", () => {
       tag: "div",
       dynamicTag: null,
       attrs: null,
+      attrsTranslationCtx: null,
       on: null,
       ref: null,
       model: null,
@@ -455,6 +476,7 @@ describe("qweb parser", () => {
       tag: "div",
       dynamicTag: null,
       attrs: null,
+      attrsTranslationCtx: null,
       on: null,
       ref: null,
       model: null,
@@ -469,6 +491,7 @@ describe("qweb parser", () => {
       tag: "div",
       dynamicTag: null,
       attrs: null,
+      attrsTranslationCtx: null,
       on: null,
       ref: null,
       model: null,
@@ -489,6 +512,7 @@ describe("qweb parser", () => {
       tag: "div",
       dynamicTag: null,
       attrs: null,
+      attrsTranslationCtx: null,
       on: null,
       ref: null,
       model: null,
@@ -530,6 +554,7 @@ describe("qweb parser", () => {
         tag: "div",
         dynamicTag: null,
         attrs: null,
+        attrsTranslationCtx: null,
         on: null,
         ref: null,
         model: null,
@@ -607,6 +632,7 @@ describe("qweb parser", () => {
         tag: "div",
         dynamicTag: null,
         attrs: null,
+        attrsTranslationCtx: null,
         on: null,
         ref: null,
         model: null,
@@ -626,6 +652,7 @@ describe("qweb parser", () => {
             tag: "h1",
             dynamicTag: null,
             attrs: null,
+            attrsTranslationCtx: null,
             on: null,
             ref: null,
             model: null,
@@ -639,6 +666,7 @@ describe("qweb parser", () => {
         tag: "h2",
         dynamicTag: null,
         attrs: null,
+        attrsTranslationCtx: null,
         on: null,
         ref: null,
         model: null,
@@ -685,6 +713,7 @@ describe("qweb parser", () => {
         {
           type: ASTType.DomNode,
           attrs: null,
+          attrsTranslationCtx: null,
           on: null,
           tag: "div",
           dynamicTag: null,
@@ -705,6 +734,7 @@ describe("qweb parser", () => {
         {
           type: ASTType.DomNode,
           attrs: null,
+          attrsTranslationCtx: null,
           on: null,
           tag: "div",
           dynamicTag: null,
@@ -742,6 +772,7 @@ describe("qweb parser", () => {
       tag: "div",
       dynamicTag: null,
       attrs: null,
+      attrsTranslationCtx: null,
       on: null,
       ref: null,
       model: null,
@@ -811,6 +842,7 @@ describe("qweb parser", () => {
         tag: "div",
         dynamicTag: null,
         attrs: null,
+        attrsTranslationCtx: null,
         on: null,
         ref: null,
         model: null,
@@ -853,6 +885,7 @@ describe("qweb parser", () => {
         tag: "span",
         dynamicTag: null,
         attrs: null,
+        attrsTranslationCtx: null,
         on: null,
         ref: null,
         model: null,
@@ -887,6 +920,7 @@ describe("qweb parser", () => {
           tag: "span",
           dynamicTag: null,
           attrs: null,
+          attrsTranslationCtx: null,
           on: null,
           ref: null,
           model: null,
@@ -920,6 +954,7 @@ describe("qweb parser", () => {
           "t-att-selected": "category.id==options.active_category_id",
           "t-att-value": "category.id",
         },
+        attrsTranslationCtx: null,
         on: null,
         ref: null,
         model: null,
@@ -940,6 +975,7 @@ describe("qweb parser", () => {
     ).toEqual({
       type: ASTType.DomNode,
       attrs: null,
+      attrsTranslationCtx: null,
       on: null,
       ref: null,
       model: null,
@@ -987,6 +1023,7 @@ describe("qweb parser", () => {
         ref: null,
         model: null,
         attrs: null,
+        attrsTranslationCtx: null,
         ns: null,
         content: [{ type: ASTType.TEsc, expr: "item", defaultValue: "" }],
       },
@@ -1010,6 +1047,7 @@ describe("qweb parser", () => {
         name: "Comp",
         dynamicProps: null,
         props: null,
+        propsTranslationCtx: null,
         slots: null,
         on: null,
       },
@@ -1099,6 +1137,7 @@ describe("qweb parser", () => {
       tag: "div",
       dynamicTag: null,
       attrs: null,
+      attrsTranslationCtx: null,
       on: null,
       ref: null,
       model: null,
@@ -1139,6 +1178,7 @@ describe("qweb parser", () => {
       tag: "button",
       dynamicTag: null,
       attrs: null,
+      attrsTranslationCtx: null,
       on: { click: "add" },
       ref: null,
       model: null,
@@ -1175,6 +1215,7 @@ describe("qweb parser", () => {
       tag: "select",
       dynamicTag: null,
       attrs: null,
+      attrsTranslationCtx: null,
       on: null,
       ref: null,
       content: [
@@ -1183,6 +1224,7 @@ describe("qweb parser", () => {
           tag: "option",
           dynamicTag: null,
           attrs: { value: "1" },
+          attrsTranslationCtx: null,
           on: null,
           ref: null,
           content: [],
@@ -1212,6 +1254,7 @@ describe("qweb parser", () => {
       tag: "select",
       dynamicTag: null,
       attrs: null,
+      attrsTranslationCtx: null,
       on: null,
       ref: null,
       content: [
@@ -1220,6 +1263,7 @@ describe("qweb parser", () => {
           tag: "option",
           dynamicTag: null,
           attrs: { "t-att-value": "valueVar" },
+          attrsTranslationCtx: null,
           on: null,
           ref: null,
           content: [],
@@ -1251,6 +1295,7 @@ describe("qweb parser", () => {
       name: "MyComponent",
       dynamicProps: null,
       props: null,
+      propsTranslationCtx: null,
       on: null,
       slots: null,
       isDynamic: false,
@@ -1263,6 +1308,7 @@ describe("qweb parser", () => {
       name: "MyComponent",
       dynamicProps: null,
       props: { a: "1", b: "'b'" },
+      propsTranslationCtx: null,
       isDynamic: false,
       on: null,
       slots: null,
@@ -1275,6 +1321,7 @@ describe("qweb parser", () => {
       name: "MyComponent",
       dynamicProps: "state",
       props: { a: "1" },
+      propsTranslationCtx: null,
       isDynamic: false,
       on: null,
       slots: null,
@@ -1287,6 +1334,7 @@ describe("qweb parser", () => {
       name: "MyComponent",
       dynamicProps: null,
       props: null,
+      propsTranslationCtx: null,
       isDynamic: false,
       on: { click: "someMethod" },
       slots: null,
@@ -1329,12 +1377,14 @@ describe("qweb parser", () => {
       name: "MyComponent",
       dynamicProps: null,
       props: null,
+      propsTranslationCtx: null,
       isDynamic: false,
       on: null,
       slots: {
         default: {
           content: { type: ASTType.Text, value: "foo" },
           attrs: null,
+          attrsTranslationCtx: null,
           on: null,
           scope: null,
         },
@@ -1350,12 +1400,14 @@ describe("qweb parser", () => {
       name: "MyComponent",
       dynamicProps: null,
       props: null,
+      propsTranslationCtx: null,
       isDynamic: false,
       on: null,
       slots: {
         default: {
           content: { type: ASTType.Text, value: "foo" },
           attrs: { param: "param" },
+          attrsTranslationCtx: null,
           on: null,
           scope: null,
         },
@@ -1370,6 +1422,7 @@ describe("qweb parser", () => {
       isDynamic: false,
       dynamicProps: null,
       props: null,
+      propsTranslationCtx: null,
       on: null,
       slots: {
         default: {
@@ -1381,6 +1434,7 @@ describe("qweb parser", () => {
                 tag: "span",
                 dynamicTag: null,
                 attrs: null,
+                attrsTranslationCtx: null,
                 content: [],
                 ref: null,
                 model: null,
@@ -1392,6 +1446,7 @@ describe("qweb parser", () => {
                 tag: "div",
                 dynamicTag: null,
                 attrs: null,
+                attrsTranslationCtx: null,
                 content: [],
                 ref: null,
                 model: null,
@@ -1401,6 +1456,7 @@ describe("qweb parser", () => {
             ],
           },
           attrs: null,
+          attrsTranslationCtx: null,
           on: null,
           scope: null,
         },
@@ -1415,9 +1471,11 @@ describe("qweb parser", () => {
       name: "MyComponent",
       on: null,
       props: null,
+      propsTranslationCtx: null,
       slots: {
         mySlot: {
           attrs: null,
+          attrsTranslationCtx: null,
           content: null,
           on: null,
           scope: null,
@@ -1434,9 +1492,16 @@ describe("qweb parser", () => {
       isDynamic: false,
       dynamicProps: null,
       props: null,
+      propsTranslationCtx: null,
       on: null,
       slots: {
-        name: { content: { type: ASTType.Text, value: "foo" }, attrs: null, on: null, scope: null },
+        name: {
+          content: { type: ASTType.Text, value: "foo" },
+          attrs: null,
+          attrsTranslationCtx: null,
+          on: null,
+          scope: null,
+        },
       },
     });
   });
@@ -1448,11 +1513,13 @@ describe("qweb parser", () => {
       isDynamic: false,
       dynamicProps: null,
       props: null,
+      propsTranslationCtx: null,
       on: null,
       slots: {
         name: {
           content: { type: ASTType.Text, value: "foo" },
           attrs: { param: "param" },
+          attrsTranslationCtx: null,
           on: null,
           scope: null,
         },
@@ -1469,12 +1536,14 @@ describe("qweb parser", () => {
       isDynamic: false,
       dynamicProps: null,
       props: null,
+      propsTranslationCtx: null,
       on: null,
       slots: {
         name: {
           content: { type: ASTType.Text, value: "foo" },
           on: { click: "doStuff" },
           attrs: null,
+          attrsTranslationCtx: null,
           scope: null,
         },
       },
@@ -1493,16 +1562,24 @@ describe("qweb parser", () => {
       name: "MyComponent",
       dynamicProps: null,
       props: null,
+      propsTranslationCtx: null,
       isDynamic: false,
       on: null,
       slots: {
         default: {
           content: { type: ASTType.Text, value: " " },
           attrs: null,
+          attrsTranslationCtx: null,
+          on: null,
+          scope: null,
+        },
+        name: {
+          content: { type: ASTType.Text, value: "foo" },
+          attrs: null,
+          attrsTranslationCtx: null,
           on: null,
           scope: null,
         },
-        name: { content: { type: ASTType.Text, value: "foo" }, attrs: null, on: null, scope: null },
       },
     });
   });
@@ -1518,11 +1595,24 @@ describe("qweb parser", () => {
       name: "MyComponent",
       dynamicProps: null,
       props: null,
+      propsTranslationCtx: null,
       isDynamic: false,
       on: null,
       slots: {
-        a: { content: { type: ASTType.Text, value: "foo" }, attrs: null, on: null, scope: null },
-        b: { content: { type: ASTType.Text, value: "bar" }, attrs: null, on: null, scope: null },
+        a: {
+          content: { type: ASTType.Text, value: "foo" },
+          attrs: null,
+          attrsTranslationCtx: null,
+          on: null,
+          scope: null,
+        },
+        b: {
+          content: { type: ASTType.Text, value: "bar" },
+          attrs: null,
+          attrsTranslationCtx: null,
+          on: null,
+          scope: null,
+        },
       },
     });
   });
@@ -1533,6 +1623,7 @@ describe("qweb parser", () => {
       name: "myComponent",
       dynamicProps: null,
       props: null,
+      propsTranslationCtx: null,
       isDynamic: true,
       on: null,
       slots: null,
@@ -1545,6 +1636,7 @@ describe("qweb parser", () => {
       name: "mycomponent",
       dynamicProps: null,
       props: { a: "1", b: "'b'" },
+      propsTranslationCtx: null,
       isDynamic: true,
       on: null,
       slots: null,
@@ -1557,6 +1649,7 @@ describe("qweb parser", () => {
       name: "mycomponent",
       dynamicProps: "state",
       props: { a: "1" },
+      propsTranslationCtx: null,
       isDynamic: true,
       on: null,
       slots: null,
@@ -1587,12 +1680,14 @@ describe("qweb parser", () => {
       name: "MyComponent",
       dynamicProps: null,
       props: null,
+      propsTranslationCtx: null,
       isDynamic: false,
       on: null,
       slots: {
         default: {
           content: { body: null, name: "subTemplate", type: ASTType.TCall, context: null },
           attrs: null,
+          attrsTranslationCtx: null,
           scope: null,
           on: null,
         },
@@ -1613,11 +1708,13 @@ describe("qweb parser", () => {
       name: "MyComponent",
       dynamicProps: null,
       props: null,
+      propsTranslationCtx: null,
       isDynamic: false,
       on: null,
       slots: {
         default: {
           attrs: null,
+          attrsTranslationCtx: null,
           on: null,
           scope: null,
           content: {
@@ -1626,11 +1723,13 @@ describe("qweb parser", () => {
             name: "Child",
             dynamicProps: null,
             props: null,
+            propsTranslationCtx: null,
             on: null,
             slots: {
               brol: {
                 content: { type: ASTType.Text, value: "coucou" },
                 attrs: null,
+                attrsTranslationCtx: null,
                 scope: null,
                 on: null,
               },
@@ -1654,11 +1753,13 @@ describe("qweb parser", () => {
       name: "MyComponent",
       dynamicProps: null,
       props: null,
+      propsTranslationCtx: null,
       isDynamic: false,
       on: null,
       slots: {
         default: {
           attrs: null,
+          attrsTranslationCtx: null,
           on: null,
           scope: null,
           content: {
@@ -1667,11 +1768,13 @@ describe("qweb parser", () => {
             name: "Child",
             dynamicProps: null,
             props: null,
+            propsTranslationCtx: null,
             on: null,
             slots: {
               brol: {
                 content: { type: ASTType.Text, value: "coucou" },
                 attrs: null,
+                attrsTranslationCtx: null,
                 on: null,
                 scope: null,
               },
@@ -1691,6 +1794,7 @@ describe("qweb parser", () => {
       type: ASTType.TSlot,
       name: "default",
       attrs: null,
+      attrsTranslationCtx: null,
       on: null,
       defaultContent: null,
     });
@@ -1701,6 +1805,7 @@ describe("qweb parser", () => {
       type: ASTType.TSlot,
       name: "header",
       attrs: null,
+      attrsTranslationCtx: null,
       on: null,
       defaultContent: { type: ASTType.Text, value: "default content" },
     });
@@ -1711,6 +1816,7 @@ describe("qweb parser", () => {
       type: ASTType.TSlot,
       name: "default",
       attrs: null,
+      attrsTranslationCtx: null,
       on: { "click.prevent": "doSomething" },
       defaultContent: null,
     });
@@ -1728,6 +1834,7 @@ describe("qweb parser", () => {
         tag: "div",
         dynamicTag: null,
         attrs: null,
+        attrsTranslationCtx: null,
         on: null,
         ref: null,
         model: null,
@@ -1746,6 +1853,7 @@ describe("qweb parser", () => {
         tag: "div",
         dynamicTag: null,
         attrs: null,
+        attrsTranslationCtx: null,
         on: null,
         ref: null,
         model: null,
@@ -1765,6 +1873,7 @@ describe("qweb parser", () => {
       tag: "div",
       dynamicTag: null,
       attrs: null,
+      attrsTranslationCtx: null,
       on: null,
       ref: "name",
       model: null,
@@ -1779,6 +1888,7 @@ describe("qweb parser", () => {
       tag: "div",
       dynamicTag: null,
       attrs: null,
+      attrsTranslationCtx: null,
       on: null,
       ref: "name",
       model: null,
@@ -1795,6 +1905,7 @@ describe("qweb parser", () => {
       tag: "div",
       dynamicTag: null,
       attrs: null,
+      attrsTranslationCtx: null,
       on: null,
       ref: "name",
       model: null,
@@ -1831,6 +1942,7 @@ describe("qweb parser", () => {
       body: {
         content: {
           attrs: null,
+          attrsTranslationCtx: null,
           content: [
             {
               type: ASTType.Text,
@@ -1859,6 +1971,190 @@ describe("qweb parser", () => {
     });
   });
 
+  test('t-translation="off": interaction with t-esc', async () => {
+    expect(parse(`<span t-esc="a" t-translation="off"/>`)).toEqual({
+      type: ASTType.TTranslation,
+      content: {
+        attrs: null,
+        attrsTranslationCtx: null,
+        content: [
+          {
+            defaultValue: "",
+            expr: "a",
+            type: ASTType.TEsc,
+          },
+        ],
+        dynamicTag: null,
+        model: null,
+        ns: null,
+        on: null,
+        ref: null,
+        tag: "span",
+        type: ASTType.DomNode,
+      },
+    });
+  });
+
+  test('t-translation="off": interaction with t-out', async () => {
+    expect(parse(`<span t-out="a" t-translation="off"/>`)).toEqual({
+      type: ASTType.TTranslation,
+      content: {
+        attrs: null,
+        attrsTranslationCtx: null,
+        content: [
+          {
+            body: null,
+            expr: "a",
+            type: ASTType.TOut,
+          },
+        ],
+        dynamicTag: null,
+        model: null,
+        ns: null,
+        on: null,
+        ref: null,
+        tag: "span",
+        type: ASTType.DomNode,
+      },
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // t-translation-context
+  // ---------------------------------------------------------------------------
+
+  test('t-translation-context="fr"', async () => {
+    expect(parse(`<t t-translation-context="fr">word</t>`)).toEqual({
+      type: ASTType.TTranslationContext,
+      content: {
+        type: ASTType.Text,
+        value: "word",
+      },
+      translationCtx: "fr",
+    });
+
+    expect(parse(`<div t-translation-context="fr">word</div>`)).toEqual({
+      content: {
+        attrs: null,
+        attrsTranslationCtx: null,
+        content: [
+          {
+            type: 0,
+            value: "word",
+          },
+        ],
+        dynamicTag: null,
+        model: null,
+        ns: null,
+        on: null,
+        ref: null,
+        tag: "div",
+        type: ASTType.DomNode,
+      },
+      translationCtx: "fr",
+      type: ASTType.TTranslationContext,
+    });
+  });
+
+  test("t-translation-context: interaction with t-esc", async () => {
+    expect(parse(`<span t-esc="a" t-translation-context="fr"/>`)).toEqual({
+      type: ASTType.TTranslationContext,
+      content: {
+        attrs: null,
+        attrsTranslationCtx: null,
+        content: [
+          {
+            defaultValue: "",
+            expr: "a",
+            type: ASTType.TEsc,
+          },
+        ],
+        dynamicTag: null,
+        model: null,
+        ns: null,
+        on: null,
+        ref: null,
+        tag: "span",
+        type: ASTType.DomNode,
+      },
+      translationCtx: "fr",
+    });
+  });
+
+  test("t-translation-context: interaction with t-out", async () => {
+    expect(parse(`<span t-out="a" t-translation-context="fr"/>`)).toEqual({
+      type: ASTType.TTranslationContext,
+      content: {
+        attrs: null,
+        attrsTranslationCtx: null,
+        content: [
+          {
+            body: null,
+            expr: "a",
+            type: ASTType.TOut,
+          },
+        ],
+        dynamicTag: null,
+        model: null,
+        ns: null,
+        on: null,
+        ref: null,
+        tag: "span",
+        type: ASTType.DomNode,
+      },
+      translationCtx: "fr",
+    });
+  });
+
+  // ---------------------------------------------------------------------------
+  // t-translation-context-attr
+  // ---------------------------------------------------------------------------
+
+  test('t-translation-context="fr" and t-translation-context-title="pt" for a div attr title', async () => {
+    expect(
+      parse(
+        `<div t-translation-context="fr" title="hello" t-translation-context-title="pt">word</div>`
+      )
+    ).toEqual({
+      content: {
+        attrs: { title: "hello" },
+        attrsTranslationCtx: { title: "pt" },
+        content: [
+          {
+            type: 0,
+            value: "word",
+          },
+        ],
+        dynamicTag: null,
+        model: null,
+        ns: null,
+        on: null,
+        ref: null,
+        tag: "div",
+        type: ASTType.DomNode,
+      },
+      translationCtx: "fr",
+      type: ASTType.TTranslationContext,
+    });
+  });
+
+  test('t-translation-context-title="fr" for component prop title', async () => {
+    expect(parse(`<Comp title="hello" t-translation-context-title="fr" />`)).toEqual({
+      dynamicProps: null,
+      isDynamic: false,
+      name: "Comp",
+      on: null,
+      props: {
+        title: "hello",
+      },
+      propsTranslationCtx: {
+        title: "fr",
+      },
+      slots: null,
+      type: ASTType.TComponent,
+    });
+  });
+
   // ---------------------------------------------------------------------------
   // t-model
   // ---------------------------------------------------------------------------
@@ -1866,6 +2162,7 @@ describe("qweb parser", () => {
     expect(parse(`<input t-model="state.stuff" />`)).toEqual({
       type: ASTType.DomNode,
       attrs: null,
+      attrsTranslationCtx: null,
       content: [],
       on: null,
       ref: null,
@@ -1886,6 +2183,7 @@ describe("qweb parser", () => {
     expect(parse(`<input t-model="state['stuff']" />`)).toEqual({
       type: ASTType.DomNode,
       attrs: null,
+      attrsTranslationCtx: null,
       content: [],
       on: null,
       ref: null,
@@ -1906,6 +2204,7 @@ describe("qweb parser", () => {
     expect(parse(`<input t-model.lazy.trim.number="state.stuff" />`)).toEqual({
       type: ASTType.DomNode,
       attrs: null,
+      attrsTranslationCtx: null,
       content: [],
       on: null,
       ref: null,
@@ -1927,6 +2226,7 @@ describe("qweb parser", () => {
   expect(parse(`<textarea t-model="state.stuff" />`)).toEqual({
     type: ASTType.DomNode,
     attrs: null,
+    attrsTranslationCtx: null,
     content: [],
     on: null,
     ref: null,
@@ -1947,6 +2247,7 @@ describe("qweb parser", () => {
   expect(parse(`<input type="checkbox" t-model="state.stuff" />`)).toEqual({
     type: ASTType.DomNode,
     attrs: { type: "checkbox" },
+    attrsTranslationCtx: null,
     content: [],
     on: null,
     ref: null,
@@ -1967,6 +2268,7 @@ describe("qweb parser", () => {
   expect(parse(`<input type="radio" t-model="state.stuff" />`)).toEqual({
     type: ASTType.DomNode,
     attrs: { type: "radio" },
+    attrsTranslationCtx: null,
     content: [],
     on: null,
     ref: null,
@@ -1987,6 +2289,7 @@ describe("qweb parser", () => {
   expect(parse(`<input type="radio" t-model.lazy.trim.number="state.stuff" />`)).toEqual({
     type: ASTType.DomNode,
     attrs: { type: "radio" },
+    attrsTranslationCtx: null,
     content: [],
     on: null,
     ref: null,
@@ -2012,6 +2315,7 @@ describe("qweb parser", () => {
     expect(parse(`<div t-tag="theTag" />`)).toEqual({
       type: ASTType.DomNode,
       attrs: null,
+      attrsTranslationCtx: null,
       content: [],
       on: null,
       ref: null,

tests/compiler/t_custom.test.ts

@@ -0,0 +1,57 @@
+import { App, Component, xml } from "../../src";
+import { makeTestFixture, snapshotEverything } from "../helpers";
+
+let fixture: HTMLElement;
+
+snapshotEverything();
+
+beforeEach(() => {
+  fixture = makeTestFixture();
+});
+
+describe("t-custom", () => {
+  test("can use t-custom directive on a node", async () => {
+    const steps: string[] = [];
+    class SomeComponent extends Component {
+      static template = xml`<div t-custom-plop="click" class="my-div"/>`;
+      click() {
+        steps.push("clicked");
+      }
+    }
+    const app = new App(SomeComponent, {
+      customDirectives: {
+        plop: (node, value) => {
+          node.setAttribute("t-on-click", value);
+        },
+      },
+    });
+    await app.mount(fixture);
+    expect(fixture.innerHTML).toBe(`<div class="my-div"></div>`);
+    fixture.querySelector("div")!.click();
+    expect(steps).toEqual(["clicked"]);
+  });
+
+  test("can use t-custom directive with modifiers on a node", async () => {
+    const steps: string[] = [];
+    class SomeComponent extends Component {
+      static template = xml`<div t-custom-plop.mouse.stop="click" class="my-div"/>`;
+      click() {
+        steps.push("clicked");
+      }
+    }
+    const app = new App(SomeComponent, {
+      customDirectives: {
+        plop: (node, value, modifiers) => {
+          node.setAttribute("t-on-click", value);
+          for (let mod of modifiers) {
+            steps.push(mod);
+          }
+        },
+      },
+    });
+    await app.mount(fixture);
+    expect(fixture.innerHTML).toBe(`<div class="my-div"></div>`);
+    fixture.querySelector("div")!.click();
+    expect(steps).toEqual(["mouse", "stop", "clicked"]);
+  });
+});

tests/compiler/t_slot.test.ts

@@ -0,0 +1,15 @@
+import { parseXML } from "../../src/common/utils";
+import { compile } from "../../src/compiler";
+
+describe("t-slot", () => {
+  test("compile t-props correctly multiple time", () => {
+    const template = `<t t-slot="default" t-props="{ a: 1 }"/>`;
+    const parsedTemplate = parseXML(template).firstChild as Element;
+
+    const fn1 = compile(parsedTemplate);
+    expect(fn1.toString()).toMatchSnapshot();
+
+    const fn2 = compile(parsedTemplate);
+    expect(fn2.toString()).toBe(fn1.toString());
+  });
+});

tests/compiler/translation.test.ts

@@ -86,7 +86,7 @@ describe("translation support", () => {
 
     await mount(SomeComponent, fixture, { translateFn });
     expect(fixture.innerHTML).toBe("<div> mot </div>");
-    expect(translateFn).toHaveBeenCalledWith("word");
+    expect(translateFn).toHaveBeenCalledWith("word", "");
   });
 
   test("translation works, even if initial string has inner consecutive white space", async () => {
@@ -97,7 +97,7 @@ describe("translation support", () => {
     const translateFn = jest.fn((expr: string) => (expr === "some  word" ? "un mot" : expr));
 
     await mount(SomeComponent, fixture, { translateFn });
-    expect(translateFn).toHaveBeenCalledWith("some  word");
+    expect(translateFn).toHaveBeenCalledWith("some  word", "");
     expect(fixture.innerHTML).toBe("<div>un mot</div>");
   });
 
@@ -171,3 +171,126 @@ describe("translation support", () => {
     expect(fixture.innerHTML).toBe("translated");
   });
 });
+
+describe("translation context", () => {
+  test("translation of text in context", async () => {
+    class SomeComponent extends Component {
+      static template = xml`
+        <div>word</div>
+        <div t-translation-context="fr">word</div>
+      `;
+    }
+
+    const translateFn = jest.fn((expr: string, translationCtx: string) =>
+      translationCtx === "fr" ? (expr === "word" ? "mot" : expr) : expr
+    );
+
+    await mount(SomeComponent, fixture, { translateFn });
+    expect(fixture.innerHTML).toBe("<div>word</div><div>mot</div>");
+    expect(translateFn).toHaveBeenCalledWith("word", "");
+    expect(translateFn).toHaveBeenCalledWith("word", "fr");
+  });
+  test("translation of attributes in context", async () => {
+    class SomeComponent extends Component {
+      static template = xml`
+        <div t-translation-context="en" t-translation-context-title="fr" title="title" label="game"/>
+      `;
+    }
+
+    const translateFn = jest.fn((expr: string, translationCtx: string) =>
+      translationCtx === "fr" ? (expr === "title" ? "titre" : expr) : expr
+    );
+
+    await mount(SomeComponent, fixture, { translateFn });
+    expect(fixture.innerHTML).toBe(`<div title="titre" label="game"></div>`);
+    expect(translateFn).toHaveBeenCalledWith("title", "fr");
+    expect(translateFn).toHaveBeenCalledWith("game", "en");
+  });
+  test("body of t-sets are translated in context", async () => {
+    class SomeComponent extends Component {
+      static template = xml`
+        <t t-set="label" t-translation-context="fr">untranslated</t>
+        <t t-esc="label"/>`;
+    }
+
+    const translateFn = jest.fn((expr: string, translationCtx: string) =>
+      translationCtx === "fr" ? "traduit" : expr
+    );
+
+    await mount(SomeComponent, fixture, { translateFn });
+    expect(fixture.innerHTML).toBe("traduit");
+    expect(translateFn).toHaveBeenCalledWith("untranslated", "fr");
+  });
+  test("props with modifier .translate are translated in context", async () => {
+    class ChildComponent extends Component {
+      static props = ["text"];
+      static template = xml`<span t-esc="props.text"/>`;
+    }
+
+    class SomeComponent extends Component {
+      static components = { ChildComponent };
+      static template = xml`
+        <ChildComponent text.translate="game" t-translation-context-text.translate="fr" />`;
+    }
+
+    const translateFn = jest.fn((expr: string, translationCtx: string) =>
+      translationCtx === "fr" ? "jeu" : expr
+    );
+
+    await mount(SomeComponent, fixture, { translateFn });
+    expect(fixture.innerHTML).toBe("<span>jeu</span>");
+    expect(translateFn).toHaveBeenCalledWith("game", "fr");
+  });
+  test("slot attrs and text contents are translated in context", async () => {
+    class ChildComponent extends Component {
+      static template = xml`
+        <div t-translation-context="ja">
+          <t t-slot="a"/>
+        </div>`;
+    }
+
+    class SomeComponent extends Component {
+      static components = { ChildComponent };
+      static template = xml`
+        <ChildComponent t-translation-context="fr">
+          <t t-set-slot="a" title.translate="title" t-translation-context-title.translate="pt">game</t>
+        </ChildComponent>
+        `;
+    }
+
+    const translateFn = jest.fn((expr: string, translationCtx: string) =>
+      translationCtx === "fr" ? "jeu" : translationCtx === "pt" ? "título" : expr
+    );
+
+    await mount(SomeComponent, fixture, { translateFn });
+    expect(fixture.innerHTML).toBe("<div>jeu</div>");
+    expect(translateFn).toHaveBeenCalledWith("game", "fr");
+    expect(translateFn).toHaveBeenCalledWith("title", "pt");
+  });
+  test("default slot params and content translated in context", async () => {
+    class SomeComponent extends Component {
+      static template = xml`
+        <div>
+          <t
+            t-slot="default"
+            t-translation-context="fr"
+            param.translate="param"
+            title.translate="title"
+            t-translation-context-title.translate="pt"
+          >
+            foo
+          </t>
+        </div>`;
+    }
+
+    const translateFn = jest.fn((expr: string, translationCtx: string) =>
+      translationCtx === "pt" ? "título" : expr
+    );
+
+    await mount(SomeComponent, fixture, { translateFn });
+    expect(fixture.innerHTML).toBe("<div> foo </div>");
+    expect(translateFn).toHaveBeenCalledWith("foo", "fr");
+    expect(translateFn).toHaveBeenCalledWith("param", "fr");
+    expect(translateFn).toHaveBeenCalledWith("title", "pt");
+  });
+});

tests/compiler/validation.test.ts

@@ -48,7 +48,7 @@ describe("basic validation", () => {
   test("compilation error", () => {
     const template = `<div t-att-class="a b">test</div>`;
     expect(() => renderToString(template))
-      .toThrow(`Failed to compile anonymous template: Unexpected identifier
+      .toThrow(`Failed to compile anonymous template: Unexpected identifier 'ctx'
 
 generated code:
 function(app, bdom, helpers) {

tests/components/__snapshots__/basics.test.ts.snap

@@ -97,6 +97,19 @@ exports[`basics a component cannot be mounted in a detached node (even if node i
 }"
 `;
 
+exports[`basics a component cannot be mounted in a detached node 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<div/>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    return block1();
+  }
+}"
+`;
+
 exports[`basics a component inside a component 1`] = `
 "function anonymous(app, bdom, helpers
 ) {
@@ -261,6 +274,19 @@ exports[`basics can mount a simple component with props 1`] = `
 }"
 `;
 
+exports[`basics cannot mount on a documentFragment 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<div>content</div>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    return block1();
+  }
+}"
+`;
+
 exports[`basics child can be updated 1`] = `
 "function anonymous(app, bdom, helpers
 ) {
@@ -1002,6 +1028,19 @@ exports[`basics three level of components with collapsing root nodes 3`] = `
 }"
 `;
 
+exports[`basics throws if mounting on target=null 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<span>simple vnode</span>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    return block1();
+  }
+}"
+`;
+
 exports[`basics two child components 1`] = `
 "function anonymous(app, bdom, helpers
 ) {

tests/components/__snapshots__/error_handling.test.ts.snap

@@ -320,6 +320,50 @@ exports[`can catch errors can catch an error in a component render function 3`]
 }"
 `;
 
+exports[`can catch errors can catch an error in onmounted 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  const comp1 = app.createComponent(null, false, false, false, []);
+  
+  return function template(ctx, node, key = \\"\\") {
+    let b2, b3;
+    b2 = text(\`Main\`);
+    if (ctx['state'].ok) {
+      const Comp1 = ctx['component'];
+      b3 = toggler(Comp1, comp1({}, (Comp1).name + key + \`__1\`, node, this, Comp1));
+    }
+    return multi([b2, b3]);
+  }
+}"
+`;
+
+exports[`can catch errors can catch an error in onmounted 3`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<div>Error!!!</div>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    return block1();
+  }
+}"
+`;
+
+exports[`can catch errors can catch an error in onmounted 4`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<div>perfect</div>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    return block1();
+  }
+}"
+`;
+
 exports[`can catch errors can catch an error in the constructor call of a component render function 1`] = `
 "function anonymous(app, bdom, helpers
 ) {
@@ -1147,6 +1191,135 @@ exports[`can catch errors error in mounted on a component with a sibling (proper
 }"
 `;
 
+exports[`can catch errors error in onMounted, graceful recovery 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  const comp1 = app.createComponent(null, false, false, false, []);
+  
+  return function template(ctx, node, key = \\"\\") {
+    const Comp1 = ctx['component'];
+    return toggler(Comp1, comp1({}, (Comp1).name + key + \`__1\`, node, this, Comp1));
+  }
+}"
+`;
+
+exports[`can catch errors error in onMounted, graceful recovery 2`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  const comp1 = app.createComponent(\`Child\`, true, false, false, []);
+  const comp2 = app.createComponent(\`Boom\`, true, false, false, []);
+  
+  return function template(ctx, node, key = \\"\\") {
+    const b2 = text(\`parent\`);
+    const b3 = comp1({}, key + \`__1\`, node, this, null);
+    const b4 = comp2({}, key + \`__2\`, node, this, null);
+    return multi([b2, b3, b4]);
+  }
+}"
+`;
+
+exports[`can catch errors error in onMounted, graceful recovery 3`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  return function template(ctx, node, key = \\"\\") {
+    return text(\`abc\`);
+  }
+}"
+`;
+
+exports[`can catch errors error in onMounted, graceful recovery 4`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  return function template(ctx, node, key = \\"\\") {
+    return text(\`boom\`);
+  }
+}"
+`;
+
+exports[`can catch errors error in onMounted, graceful recovery 5`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  return function template(ctx, node, key = \\"\\") {
+    return text(\`def\`);
+  }
+}"
+`;
+
+exports[`can catch errors error in onMounted, graceful recovery, variation 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  const comp1 = app.createComponent(null, false, false, false, []);
+  
+  return function template(ctx, node, key = \\"\\") {
+    let b2, b3;
+    b2 = text(\`R\`);
+    if (ctx['state'].gogogo) {
+      const Comp1 = ctx['component'];
+      b3 = toggler(Comp1, comp1({}, (Comp1).name + key + \`__1\`, node, this, Comp1));
+    }
+    return multi([b2, b3]);
+  }
+}"
+`;
+
+exports[`can catch errors error in onMounted, graceful recovery, variation 3`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  const comp1 = app.createComponent(\`Child\`, true, false, false, []);
+  const comp2 = app.createComponent(\`Boom\`, true, false, false, []);
+  
+  return function template(ctx, node, key = \\"\\") {
+    const b2 = text(\`parent\`);
+    const b3 = comp1({}, key + \`__1\`, node, this, null);
+    const b4 = comp2({}, key + \`__2\`, node, this, null);
+    return multi([b2, b3, b4]);
+  }
+}"
+`;
+
+exports[`can catch errors error in onMounted, graceful recovery, variation 4`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  return function template(ctx, node, key = \\"\\") {
+    return text(\`abc\`);
+  }
+}"
+`;
+
+exports[`can catch errors error in onMounted, graceful recovery, variation 5`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  return function template(ctx, node, key = \\"\\") {
+    return text(\`boom\`);
+  }
+}"
+`;
+
+exports[`can catch errors error in onMounted, graceful recovery, variation 6`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  return function template(ctx, node, key = \\"\\") {
+    return text(\`def\`);
+  }
+}"
+`;
+
 exports[`can catch errors onError in class inheritance is called if rethrown 1`] = `
 "function anonymous(app, bdom, helpers
 ) {

tests/components/__snapshots__/lifecycle.test.ts.snap

@@ -683,7 +683,7 @@ exports[`lifecycle hooks sub widget (inside sub node): hooks are correctly calle
 }"
 `;
 
-exports[`lifecycle hooks timeout in onWillStart doesn't emit a warning if app is destroyed 1`] = `
+exports[`lifecycle hooks timeout in onWillStart doesn't emit a console log if app is destroyed 1`] = `
 "function anonymous(app, bdom, helpers
 ) {
   let { text, createBlock, list, multi, html, toggler, comment } = bdom;
@@ -696,7 +696,7 @@ exports[`lifecycle hooks timeout in onWillStart doesn't emit a warning if app is
 }"
 `;
 
-exports[`lifecycle hooks timeout in onWillStart emits a warning 1`] = `
+exports[`lifecycle hooks timeout in onWillStart emits a console log 1`] = `
 "function anonymous(app, bdom, helpers
 ) {
   let { text, createBlock, list, multi, html, toggler, comment } = bdom;
@@ -709,7 +709,7 @@ exports[`lifecycle hooks timeout in onWillStart emits a warning 1`] = `
 }"
 `;
 
-exports[`lifecycle hooks timeout in onWillUpdateProps emits a warning 1`] = `
+exports[`lifecycle hooks timeout in onWillUpdateProps emits a console log 1`] = `
 "function anonymous(app, bdom, helpers
 ) {
   let { text, createBlock, list, multi, html, toggler, comment } = bdom;
@@ -723,7 +723,7 @@ exports[`lifecycle hooks timeout in onWillUpdateProps emits a warning 1`] = `
 }"
 `;
 
-exports[`lifecycle hooks timeout in onWillUpdateProps emits a warning 2`] = `
+exports[`lifecycle hooks timeout in onWillUpdateProps emits a console log 2`] = `
 "function anonymous(app, bdom, helpers
 ) {
   let { text, createBlock, list, multi, html, toggler, comment } = bdom;

tests/components/__snapshots__/props_validation.test.ts.snap

@@ -924,6 +924,20 @@ exports[`props validation props: list of strings 1`] = `
 }"
 `;
 
+exports[`props validation validate props for root component 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<div><block-text-0/></div>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    let txt1 = ctx['message'];
+    return block1([txt1]);
+  }
+}"
+`;
+
 exports[`props validation validate simple types 1`] = `
 "function anonymous(app, bdom, helpers
 ) {

tests/components/error_handling.test.ts

@@ -157,7 +157,7 @@ describe("basics", () => {
     } catch (e) {
       error = e as Error;
     }
-    const expectedErrorMessage = `Failed to compile anonymous template: Unexpected identifier
+    const expectedErrorMessage = `Failed to compile anonymous template: Unexpected identifier 'ctx'
 
 generated code:
 function(app, bdom, helpers) {
@@ -182,7 +182,7 @@ function(app, bdom, helpers) {
       static components = { Child };
       static template = xml`<Child/>`;
     }
-    const expectedErrorMessage = `Failed to compile anonymous template: Unexpected identifier
+    const expectedErrorMessage = `Failed to compile anonymous template: Unexpected identifier 'ctx'
 
 generated code:
 function(app, bdom, helpers) {
@@ -564,6 +564,82 @@ describe("can catch errors", () => {
     expect(mockConsoleWarn).toBeCalledTimes(0);
   });
 
+  test("can catch an error in onmounted", async () => {
+    class ErrorComponent extends Component {
+      static template = xml`<div>Error!!!</div>`;
+      setup() {
+        useLogLifecycle();
+        onMounted(() => {
+          throw new Error("error");
+        });
+      }
+    }
+    class PerfectComponent extends Component {
+      static template = xml`<div>perfect</div>`;
+      setup() {
+        useLogLifecycle();
+      }
+    }
+    class Main extends Component {
+      static template = xml`Main<t t-if="state.ok" t-component="component"/>`;
+      component: any;
+      state: any;
+      setup() {
+        this.state = useState({ ok: false });
+        useLogLifecycle();
+        this.component = ErrorComponent;
+        onError(() => {
+          this.component = PerfectComponent;
+          this.render();
+        });
+      }
+    }
+
+    const app = await mount(Main, fixture);
+    expect(steps.splice(0)).toMatchInlineSnapshot(`
+      Array [
+        "Main:setup",
+        "Main:willStart",
+        "Main:willRender",
+        "Main:rendered",
+        "Main:mounted",
+      ]
+    `);
+    expect(fixture.innerHTML).toBe("Main");
+    (app as any).state.ok = true;
+    await nextTick();
+    expect(fixture.innerHTML).toBe("Main<div>Error!!!</div>");
+    expect(steps.splice(0)).toMatchInlineSnapshot(`
+      Array [
+        "Main:willRender",
+        "ErrorComponent:setup",
+        "ErrorComponent:willStart",
+        "Main:rendered",
+        "ErrorComponent:willRender",
+        "ErrorComponent:rendered",
+        "Main:willPatch",
+        "ErrorComponent:mounted",
+        "Main:willRender",
+        "PerfectComponent:setup",
+        "PerfectComponent:willStart",
+        "Main:rendered",
+      ]
+    `);
+    await nextTick();
+    expect(steps.splice(0)).toMatchInlineSnapshot(`
+      Array [
+        "PerfectComponent:willRender",
+        "PerfectComponent:rendered",
+        "Main:willPatch",
+        "ErrorComponent:willUnmount",
+        "ErrorComponent:willDestroy",
+        "PerfectComponent:mounted",
+        "Main:patched",
+      ]
+    `);
+    expect(fixture.innerHTML).toBe("Main<div>perfect</div>");
+  });
+
   test("calling a hook outside setup should crash", async () => {
     class Root extends Component {
       static template = xml`<t t-esc="state.value"/>`;
@@ -1602,4 +1678,198 @@ describe("can catch errors", () => {
     `);
     expect(fixture.innerHTML).toBe("2");
   });
+
+  test("error in onMounted, graceful recovery", async () => {
+    class Child extends Component {
+      static template = xml`abc`;
+      setup() {
+        useLogLifecycle();
+      }
+    }
+
+    class OtherChild extends Component {
+      static template = xml`def`;
+      setup() {
+        useLogLifecycle();
+      }
+    }
+
+    class Boom extends Component {
+      static template = xml`boom`;
+      setup() {
+        useLogLifecycle();
+        onMounted(() => {
+          throw new Error("boom");
+        });
+      }
+    }
+
+    class Parent extends Component {
+      static template = xml`parent<Child/><Boom/>`;
+      static components = { Child, Boom };
+      setup() {
+        useLogLifecycle();
+      }
+    }
+
+    class Root extends Component {
+      static template = xml`<t t-component="component"/>`;
+
+      component: any = Parent;
+      setup() {
+        useLogLifecycle();
+        onError(() => {
+          logStep("error");
+          this.component = OtherChild;
+          this.render();
+        });
+      }
+    }
+
+    await mount(Root, fixture);
+    expect(fixture.innerHTML).toBe("def");
+
+    expect(steps.splice(0)).toMatchInlineSnapshot(`
+      Array [
+        "Root:setup",
+        "Root:willStart",
+        "Root:willRender",
+        "Parent:setup",
+        "Parent:willStart",
+        "Root:rendered",
+        "Parent:willRender",
+        "Child:setup",
+        "Child:willStart",
+        "Boom:setup",
+        "Boom:willStart",
+        "Parent:rendered",
+        "Child:willRender",
+        "Child:rendered",
+        "Boom:willRender",
+        "Boom:rendered",
+        "Boom:mounted",
+        "error",
+        "Root:willRender",
+        "OtherChild:setup",
+        "OtherChild:willStart",
+        "Root:rendered",
+        "OtherChild:willRender",
+        "OtherChild:rendered",
+        "OtherChild:mounted",
+        "Root:mounted",
+      ]
+    `);
+  });
+
+  test("error in onMounted, graceful recovery, variation", async () => {
+    class Child extends Component {
+      static template = xml`abc`;
+      setup() {
+        useLogLifecycle();
+      }
+    }
+
+    class OtherChild extends Component {
+      static template = xml`def`;
+      setup() {
+        useLogLifecycle();
+      }
+    }
+
+    class Boom extends Component {
+      static template = xml`boom`;
+      setup() {
+        useLogLifecycle();
+        onMounted(() => {
+          throw new Error("boom");
+        });
+      }
+    }
+
+    class Parent extends Component {
+      static template = xml`parent<Child/><Boom/>`;
+      static components = { Child, Boom };
+      setup() {
+        useLogLifecycle();
+      }
+    }
+
+    class Root extends Component {
+      static template = xml`R<t t-if="state.gogogo" t-component="component"/>`;
+
+      component: any = Parent;
+      state = useState({ gogogo: false });
+
+      setup() {
+        useLogLifecycle();
+        onError(() => {
+          logStep("error");
+          this.component = OtherChild;
+          this.render();
+        });
+      }
+    }
+
+    const root = await mount(Root, fixture);
+    expect(fixture.innerHTML).toBe("R");
+
+    // standard mounting process
+    expect(steps.splice(0)).toMatchInlineSnapshot(`
+      Array [
+        "Root:setup",
+        "Root:willStart",
+        "Root:willRender",
+        "Root:rendered",
+        "Root:mounted",
+      ]
+    `);
+
+    root.state.gogogo = true;
+    await nextTick();
+
+    expect(fixture.innerHTML).toBe("Rparentabcboom");
+    // rerender, root creates sub components, it crashes, tries to recover
+    expect(steps.splice(0)).toMatchInlineSnapshot(`
+      Array [
+        "Root:willRender",
+        "Parent:setup",
+        "Parent:willStart",
+        "Root:rendered",
+        "Parent:willRender",
+        "Child:setup",
+        "Child:willStart",
+        "Boom:setup",
+        "Boom:willStart",
+        "Parent:rendered",
+        "Child:willRender",
+        "Child:rendered",
+        "Boom:willRender",
+        "Boom:rendered",
+        "Root:willPatch",
+        "Boom:mounted",
+        "error",
+        "Root:willRender",
+        "OtherChild:setup",
+        "OtherChild:willStart",
+        "Root:rendered",
+      ]
+    `);
+
+    await nextTick();
+    expect(fixture.innerHTML).toBe("Rdef");
+
+    expect(steps.splice(0)).toMatchInlineSnapshot(`
+      Array [
+        "OtherChild:willRender",
+        "OtherChild:rendered",
+        "Root:willPatch",
+        "Child:willDestroy",
+        "Boom:willUnmount",
+        "Boom:willDestroy",
+        "Parent:willDestroy",
+        "OtherChild:mounted",
+        "Root:patched",
+      ]
+    `);
+  });
 });

tests/components/lifecycle.test.ts

@@ -112,10 +112,10 @@ describe("lifecycle hooks", () => {
     await mount(Test, fixture);
   });
 
-  test("timeout in onWillStart emits a warning", async () => {
-    const { warn } = console;
-    let warnArgs: any[];
-    console.warn = jest.fn((...args) => (warnArgs = args));
+  test("timeout in onWillStart emits a console log", async () => {
+    const { log } = console;
+    let logArgs: any[];
+    console.log = jest.fn((...args) => (logArgs = args));
     const { setTimeout } = window;
     let timeoutCbs: any = {};
     let timeoutId = 0;
@@ -138,17 +138,17 @@ describe("lifecycle hooks", () => {
       }
       await nextMicroTick();
       await nextMicroTick();
-      expect(console.warn).toHaveBeenCalledTimes(1);
-      expect(warnArgs![0]!.message).toBe("onWillStart's promise hasn't resolved after 3 seconds");
+      expect(console.log).toHaveBeenCalledTimes(1);
+      expect(logArgs![0]!.message).toBe("onWillStart's promise hasn't resolved after 3 seconds");
     } finally {
-      console.warn = warn;
+      console.log = log;
       window.setTimeout = setTimeout;
     }
   });
 
-  test("timeout in onWillStart doesn't emit a warning if app is destroyed", async () => {
-    const { warn } = console;
-    console.warn = jest.fn();
+  test("timeout in onWillStart doesn't emit a console log if app is destroyed", async () => {
+    const { log } = console;
+    console.log = jest.fn();
     const { setTimeout } = window;
     let timeoutCbs: any = {};
     let timeoutId = 0;
@@ -172,14 +172,14 @@ describe("lifecycle hooks", () => {
       }
       await nextMicroTick();
       await nextMicroTick();
-      expect(console.warn).toHaveBeenCalledTimes(0);
+      expect(console.log).toHaveBeenCalledTimes(0);
     } finally {
-      console.warn = warn;
+      console.log = log;
       window.setTimeout = setTimeout;
     }
   });
 
-  test("timeout in onWillUpdateProps emits a warning", async () => {
+  test("timeout in onWillUpdateProps emits a console log", async () => {
     class Child extends Component {
       static template = xml``;
       setup() {
@@ -193,9 +193,9 @@ describe("lifecycle hooks", () => {
     }
     const parent = await mount(Parent, fixture, { test: true });
 
-    const { warn } = console;
-    let warnArgs: any[];
-    console.warn = jest.fn((...args) => (warnArgs = args));
+    const { log } = console;
+    let logArgs: any[];
+    console.log = jest.fn((...args) => (logArgs = args));
     const { setTimeout } = window;
     let timeoutCbs: any = {};
     let timeoutId = 0;
@@ -218,12 +218,12 @@ describe("lifecycle hooks", () => {
         delete timeoutCbs[id];
       }
       await tick;
-      expect(console.warn).toHaveBeenCalledTimes(1);
-      expect(warnArgs![0]!.message).toBe(
+      expect(console.log).toHaveBeenCalledTimes(1);
+      expect(logArgs![0]!.message).toBe(
         "onWillUpdateProps's promise hasn't resolved after 3 seconds"
       );
     } finally {
-      console.warn = warn;
+      console.log = log;
       window.setTimeout = setTimeout;
     }
   });

tests/components/props.test.ts

@@ -339,7 +339,7 @@ test("throw if prop uses an unknown suffix", async () => {
 
   await expect(async () => {
     await mount(Parent, fixture);
-  }).rejects.toThrowError("Invalid prop suffix");
+  }).rejects.toThrowError("Invalid prop suffix: somesuffix");
 });
 
 test(".alike suffix in a simple case", async () => {

tests/components/props_validation.test.ts

@@ -1,6 +1,6 @@
 import { makeTestFixture, nextAppError, nextTick, snapshotEverything } from "../helpers";
 import { Component, onError, xml, mount, OwlError, useState } from "../../src";
-import { App, DEV_MSG } from "../../src/runtime/app";
+import { App } from "../../src/runtime/app";
 import { validateProps } from "../../src/runtime/template_helpers";
 import { Schema } from "../../src/runtime/validation";
 
@@ -13,7 +13,7 @@ let mockConsoleWarn: any;
 
 beforeAll(() => {
   console.info = (message: any) => {
-    if (message === DEV_MSG()) {
+    if (message === `Owl is running in 'dev' mode.`) {
       return;
     }
     info(message);

tests/misc/portal.test.ts

@@ -11,7 +11,6 @@ import {
   useState,
 } from "../../src";
 import { xml } from "../../src/";
-import { DEV_MSG } from "../../src/runtime/app";
 import { elem, makeTestFixture, nextAppError, nextTick, snapshotEverything } from "../helpers";
 
 let fixture: HTMLElement;
@@ -30,7 +29,7 @@ snapshotEverything();
 
 beforeAll(() => {
   console.info = (message: any) => {
-    if (message === DEV_MSG()) {
+    if (message === `Owl is running in 'dev' mode.`) {
       return;
     }
     info(message);

tests/shadow_dom/__snapshots__/shadow_dom.test.ts.snap

@@ -27,6 +27,58 @@ exports[`shadow_dom can mount app 1`] = `
 }"
 `;
 
+exports[`shadow_dom can mount app in closed shadow dom 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<div class=\\"my-div\\"/>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    return block1();
+  }
+}"
+`;
+
+exports[`shadow_dom can mount app inside a separate HTML document 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<div class=\\"my-div\\"/>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    return block1();
+  }
+}"
+`;
+
+exports[`shadow_dom can mount app inside a shadow child element 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<div class=\\"my-div\\"/>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    return block1();
+  }
+}"
+`;
+
+exports[`shadow_dom can mount app inside an element in a shadow root inside an iframe 1`] = `
+"function anonymous(app, bdom, helpers
+) {
+  let { text, createBlock, list, multi, html, toggler, comment } = bdom;
+  
+  let block1 = createBlock(\`<div class=\\"my-div\\"/>\`);
+  
+  return function template(ctx, node, key = \\"\\") {
+    return block1();
+  }
+}"
+`;
+
 exports[`shadow_dom useRef hook 1`] = `
 "function anonymous(app, bdom, helpers
 ) {

tests/shadow_dom/shadow_dom.test.ts

@@ -29,6 +29,24 @@ describe("shadow_dom", () => {
     expect(status(comp)).toBe("destroyed");
   });
 
+  test("can mount app in closed shadow dom", async () => {
+    class SomeComponent extends Component {
+      static template = xml`<div class="my-div"/>`;
+    }
+
+    const container = document.createElement("div");
+    fixture.appendChild(container);
+    const shadow = container.attachShadow({ mode: "closed" });
+    const app = new App(SomeComponent);
+    const comp = await app.mount(shadow);
+    const div = shadow.querySelector(".my-div");
+    expect(div).not.toBe(null);
+    expect(shadow.contains(div)).toBe(true);
+    app.destroy();
+    expect(shadow.contains(div)).toBe(false);
+    expect(status(comp)).toBe("destroyed");
+  });
+
   test("can bind event handler", async () => {
     let a = 1;
     class SomeComponent extends Component {
@@ -64,4 +82,73 @@ describe("shadow_dom", () => {
     await mountedProm;
     expect(comp!.div.el).toBe(shadow.querySelector(".my-div"));
   });
+
+  test("can mount app inside a shadow child element", async () => {
+    class SomeComponent extends Component {
+      static template = xml`<div class="my-div"/>`;
+    }
+    const shadow = fixture.attachShadow({ mode: "open" });
+    const shadowDiv = document.createElement("div");
+    shadow.append(shadowDiv);
+    const app = new App(SomeComponent);
+    const comp = await app.mount(shadowDiv);
+    const div = shadow.querySelector(".my-div");
+    expect(div).not.toBe(null);
+    expect(shadow.contains(div)).toBe(true);
+    app.destroy();
+    expect(shadow.contains(div)).toBe(false);
+    expect(status(comp)).toBe("destroyed");
+  });
+
+  test("can mount app inside a separate HTML document", async () => {
+    class SomeComponent extends Component {
+      static template = xml`<div class="my-div"/>`;
+    }
+
+    const separateDoc = document.implementation.createHTMLDocument();
+    const container = separateDoc.createElement("div");
+    separateDoc.body.appendChild(container);
+
+    const app = new App(SomeComponent);
+    let error: Error;
+    try {
+      await app.mount(container);
+    } catch (e) {
+      error = e as Error;
+    }
+    expect(error!).toBeDefined();
+    expect(error!.message).toBe(
+      "Cannot mount a component: the target document is not attached to a window (defaultView is missing)"
+    );
+  });
+
+  test("can mount app inside an element in a shadow root inside an iframe", async () => {
+    class SomeComponent extends Component {
+      static template = xml`<div class="my-div"/>`;
+    }
+
+    const iframe = document.createElement("iframe");
+    fixture.appendChild(iframe);
+
+    const iframeDoc = iframe.contentDocument!;
+    const container = iframeDoc.createElement("div");
+    iframeDoc.body.appendChild(container);
+
+    const shadow = container.attachShadow({ mode: "open" });
+
+    const shadowTarget = iframeDoc.createElement("div");
+    shadow.appendChild(shadowTarget);
+
+    const app = new App(SomeComponent);
+    const comp = await app.mount(shadowTarget);
+
+    const div = shadow.querySelector(".my-div");
+    expect(div).not.toBe(null);
+    expect(shadow.contains(div)).toBe(true);
+    expect(iframeDoc.body.contains(container)).toBe(true);
+
+    app.destroy();
+    expect(shadow.contains(div)).toBe(false);
+    expect(status(comp)).toBe("destroyed");
+  });
 });

tests/utils.test.ts

@@ -1,4 +1,4 @@
-import { batched, EventBus } from "../src/runtime/utils";
+import { batched, EventBus, htmlEscape, markup } from "../src/runtime/utils";
 import { nextMicroTick } from "./helpers";
 
 describe("event bus behaviour", () => {
@@ -71,3 +71,94 @@ describe("batched", () => {
     expect(n).toBe(2);
   });
 });
+
+const Markup = markup("").constructor;
+describe("markup", () => {
+  test("string is flagged as safe", () => {
+    const html = markup("<blink>Hello</blink>");
+    expect(html).toBeInstanceOf(Markup);
+  });
+  describe("htmlEscape", () => {
+    test("htmlEscape escapes text", () => {
+      const res = htmlEscape("<p>test</p>");
+      expect(res.toString()).toBe("&lt;p&gt;test&lt;/p&gt;");
+      expect(res).toBeInstanceOf(Markup);
+    });
+    test("htmlEscape keeps html markup", () => {
+      const res = htmlEscape(markup("<p>test</p>"));
+      expect(res.toString()).toBe("<p>test</p>");
+      expect(res).toBeInstanceOf(Markup);
+    });
+    test("htmlEscape produces empty string on undefined", () => {
+      const res = htmlEscape(undefined);
+      expect(res.toString()).toBe("");
+      expect(res).toBeInstanceOf(Markup);
+    });
+    test("htmlEscape produces string from number", () => {
+      const res = htmlEscape(10);
+      expect(res.toString()).toBe("10");
+      expect(res).toBeInstanceOf(Markup);
+    });
+    test("htmlEscape produces string from boolean", () => {
+      const res = htmlEscape(false);
+      expect(res.toString()).toBe("false");
+      expect(res).toBeInstanceOf(Markup);
+    });
+    test("htmlEscape correctly escapes various links", () => {
+      expect(htmlEscape("<a>this is a link</a>").toString()).toBe(
+        "&lt;a&gt;this is a link&lt;/a&gt;"
+      );
+      expect(htmlEscape(`<a href="https://www.odoo.com">odoo<a>`).toString()).toBe(
+        `&lt;a href=&quot;https://www.odoo.com&quot;&gt;odoo&lt;a&gt;`
+      );
+      expect(htmlEscape(`<a href='https://www.odoo.com'>odoo<a>`).toString()).toBe(
+        `&lt;a href=&#x27;https://www.odoo.com&#x27;&gt;odoo&lt;a&gt;`
+      );
+      expect(htmlEscape("<a href='https://www.odoo.com'>Odoo`s website<a>").toString()).toBe(
+        `&lt;a href=&#x27;https://www.odoo.com&#x27;&gt;Odoo&#x60;s website&lt;a&gt;`
+      );
+    });
+    test("htmlEscape doesn't escape already escaped content", () => {
+      const res = htmlEscape("<p>test</p>");
+      expect(res.toString()).toBe("&lt;p&gt;test&lt;/p&gt;");
+      expect(res).toBeInstanceOf(Markup);
+      const res2 = htmlEscape(res);
+      expect(res2.toString()).toBe("&lt;p&gt;test&lt;/p&gt;");
+      expect(res2).toBeInstanceOf(Markup);
+      expect(res2).toBe(res);
+    });
+    test("htmlEscape returns markup even for only-safe text", () => {
+      const res = htmlEscape("safe");
+      expect(res.toString()).toBe("safe");
+      expect(res).toBeInstanceOf(Markup);
+    });
+  });
+  describe("tag function", () => {
+    test("interpolated values are escaped", () => {
+      const maliciousInput = "<script>alert('💥💥')</script>";
+      const html = markup`<b>${maliciousInput}</b>`;
+      expect(html.toString()).toBe("<b>&lt;script&gt;alert(&#x27;💥💥&#x27;)&lt;/script&gt;</b>");
+      expect(html).toBeInstanceOf(Markup);
+    });
+    test("interpolated markups aren't escaped", () => {
+      const shouldBeEscaped = "<script>alert('should be escaped')</script>";
+      const shouldnt = markup("<b>this is safe</b>");
+      const html = markup`<div>${shouldBeEscaped} ${shouldnt}</div>`;
+      expect(html.toString()).toBe(
+        "<div>&lt;script&gt;alert(&#x27;should be escaped&#x27;)&lt;/script&gt; <b>this is safe</b></div>"
+      );
+      expect(html).toBeInstanceOf(Markup);
+    });
+    test("quotes in interpolated values are escaped", () => {
+      const imgUrl = `lol" onerror="alert('xss')`;
+      const html = markup`<img src="${imgUrl}">`;
+      expect(html.toString()).toBe(`<img src="lol&quot; onerror=&quot;alert(&#x27;xss&#x27;)">`);
+    });
+    test("already escaped content is not escaped again", () => {
+      const res = htmlEscape("<p>test</p>");
+      expect(res.toString()).toBe("&lt;p&gt;test&lt;/p&gt;");
+      const html = markup`${res}`;
+      expect(html.toString()).toBe("&lt;p&gt;test&lt;/p&gt;");
+    });
+  });
+});

tools/compile_owl_templates.mjs

@@ -0,0 +1,31 @@
+#!/usr/bin/env node
+
+// this is the "compile_owl_templates" command that owl makes available when
+// installed as a node_module.
+import { existsSync, mkdirSync, writeFileSync } from "fs";
+import { dirname } from "path";
+import { compileTemplates } from "../dist/compile_templates.mjs";
+import { parseArgs } from "util";
+
+const { values, positionals } = parseArgs({
+  allowPositionals: true,
+  options: {
+    output: {
+      type: "string",
+      short: "o",
+      default: "templates.js",
+    },
+  },
+});
+
+if (positionals.length) {
+  const result = await compileTemplates(positionals);
+  const outputPath = values.output;
+  const dir = dirname(outputPath);
+  if (!existsSync(dir)) {
+    mkdirSync(dir, { recursive: true });
+  }
+  writeFileSync(outputPath, result);
+} else {
+  console.log("Please provide a path");
+}

tools/compile_xml.js

@@ -1,113 +0,0 @@
-const fs = require("fs");
-const path = require("path");
-const jsdom = require("jsdom");
-
-// -----------------------------------------------------------------------------
-// add global DOM stuff for compiler
-// -----------------------------------------------------------------------------
-var document = new jsdom.JSDOM("", {});
-var window = document.window;
-global.document = window.document;
-global.window = window;
-global.DOMParser = window.DOMParser;
-global.Element = window.Element;
-global.Node = window.Node;
-// this needs to be below the jsdom stuff
-const { compile } = require("../dist/compiler.js");
-
-// -----------------------------------------------------------------------------
-// helpers
-// -----------------------------------------------------------------------------
-async function getXmlFiles(dir) {
-  let xmls = [];
-  const files = await fs.promises.readdir(dir);
-  const filesStats = await Promise.all(files.map((file) => fs.promises.stat(path.join(dir, file))));
-  for (let i in files) {
-    const name = path.join(dir, files[i]);
-    if (filesStats[i].isDirectory()) {
-      xmls = xmls.concat(await getXmlFiles(name));
-    } else {
-      if (name.endsWith(".xml")) {
-        xmls.push(name);
-      }
-    }
-  }
-  return xmls;
-}
-
-function writeToFile(filepath, data) {
-  if (!fs.existsSync(path.dirname(filepath))) {
-    fs.mkdirSync(path.dirname(filepath), { recursive: true });
-  }
-  fs.writeFile(filepath, data, (err) => {
-    if (err) {
-      process.stdout.write(`Error while writing file ${filepath}: ${err}`);
-      return;
-    }
-  });
-}
-
-// adapted from https://medium.com/@mhagemann/the-ultimate-way-to-slugify-a-url-string-in-javascript-b8e4a0d849e1
-const a = "·-_,:;";
-const p = new RegExp(a.split("").join("|"), "g");
-
-function slugify(str) {
-  return str
-    .replace(/\//g, "") // remove /
-    .replace(/\./g, "_") // Replace . with _
-    .replace(p, (c) => '_') // Replace special characters
-    .replace(/&/g, "_and_") // Replace & with ‘and’
-    .replace(/[^\w\-]+/g, "") // Remove all non-word characters
-}
-
-// -----------------------------------------------------------------------------
-// main
-// -----------------------------------------------------------------------------
-
-async function compileTemplates(files) {
-  process.stdout.write(`Processing ${files.length} files`);
-  let xmlStrings = await Promise.all(files.map((file) => fs.promises.readFile(file, "utf8")));
-
-  const templates = [];
-  const errors = [];
-
-  for (let i = 0; i < files.length; i++) {
-    const fileName = files[i];
-    const fileContent = xmlStrings[i];
-    process.stdout.write(`.`);
-    const parser = new DOMParser();
-    const doc = parser.parseFromString(fileContent, "text/xml");
-    for (const template of doc.querySelectorAll("[t-name]")) {
-      const name = template.getAttribute("t-name");
-      if (template.hasAttribute("owl")) {
-        template.removeAttribute("owl")
-      }
-      const fnName = slugify(name);
-      try {
-        const fn = compile(template).toString().replace('anonymous', fnName);
-        templates.push(`"${name}": ${fn},\n`);
-      } catch (e) {
-        errors.push({ name, fileName, e });
-      }
-    }
-  }
-  process.stdout.write(`\n`);
-
-  for (let { name, fileName, e } of errors) {
-    console.warn(`Error while compiling '${name}' (in file ${fileName})`);
-    console.error(e);
-  }
-  console.log(`${templates.length} templates compiled`);
-
-  return `export const templates = {\n ${templates.join("\n")} \n}`;
-}
-
-const templatesPath = process.argv[2];
-if (templatesPath && templatesPath.length) {
-  getXmlFiles(templatesPath).then(async (files) => {
-    const result = await compileTemplates(files);
-    writeToFile("templates.js", result);
-  });
-} else {
-  console.log("Please provide a path");
-}

tools/devtools/manifest-chrome.json

@@ -1,6 +1,6 @@
 {
   "name": "Owl devtools",
-  "version": "1.2.2",
+  "version": "1.3.0",
   "manifest_version": 3,
   "description": "Chrome devtools extension for Odoo Owl framework",
   "icons": {
@@ -14,7 +14,7 @@
     "default_popup": "popup_app/popup.html"
   },
   "permissions": ["scripting", "storage"],
-  "host_permissions": ["http://*/*", "https://*/*"],
+  "host_permissions": ["http://*/*", "https://*/*", "file://*"],
   "content_security_policy": {
     "script-src": "self",
     "object-src": "self"

tools/devtools/manifest-firefox.json

@@ -1,6 +1,6 @@
 {
   "name": "Owl devtools",
-  "version": "1.0.0",
+  "version": "1.1.0",
   "description": "Firefox devtools extension for Odoo Owl framework",
   "manifest_version": 2,
   "browser_specific_settings": {

tools/devtools/src/devtools_app/context_menu/context_menu.js

@@ -0,0 +1,36 @@
+import { useStore } from "../store/store";
+
+const { Component, useEffect, useRef } = owl;
+
+export class ContextMenu extends Component {
+  static template = "devtools.ContextMenu";
+  static props = {
+    items: Array,
+  };
+  setup() {
+    this.store = useStore();
+    this.contextMenu = useRef("contextmenu");
+    useEffect(
+      (position) => {
+        const menu = this.contextMenu.el;
+        const menuWidth = menu.offsetWidth;
+        const menuHeight = menu.offsetHeight;
+        let { x, y } = position;
+        if (x + menuWidth > window.innerWidth) {
+          x = window.innerWidth - menuWidth;
+        }
+        if (y + menuHeight > window.innerHeight) {
+          y = window.innerHeight - menuHeight;
+        }
+        menu.style.left = x + "px";
+        // Need 25px offset because of the main navbar from the browser devtools
+        menu.style.top = y + "px";
+      },
+      () => [this.store.contextMenu?.position]
+    );
+  }
+  onClickItem(action) {
+    action();
+    this.store.contextMenu = null;
+  }
+}

tools/devtools/src/devtools_app/context_menu/context_menu.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<templates xml:space="preserve">
+  <t t-name="devtools.ContextMenu">
+    <div class="custom-menu" t-ref="contextmenu">
+        <ul class="my-1">
+          <li t-foreach="props.items" t-as="item" t-key="item_index" t-if="item.show" t-esc="item.title" t-on-click.stop="() => this.onClickItem(item.action)" class="custom-menu-item py-1 px-4"/>
+        </ul>
+    </div>
+  </t>
+</templates>

tools/devtools/src/devtools_app/devtools_window/components_tab/details_window/details_window.js

@@ -1,4 +1,4 @@
-const { Component, useRef, useEffect } = owl;
+const { Component } = owl;
 import { useStore } from "../../../store/store";
 import { ObjectTreeElement } from "./object_tree_element/object_tree_element";
 
@@ -7,23 +7,64 @@ export class DetailsWindow extends Component {
   static components = { ObjectTreeElement };
   setup() {
     this.store = useStore();
-    this.contextMenu = useRef("contextmenu");
-    this.contextMenuId = this.store.contextMenu.id++;
-    this.contextMenuEvent;
-    // Open the context menu when the ids match
-    useEffect(
-      (menuId) => {
-        if (menuId === this.contextMenuId) {
-          this.store.contextMenu.open(this.contextMenuEvent, this.contextMenu.el);
-        }
+  }
+
+  get contextMenuItems() {
+    return [
+      {
+        title: "Inspect source code",
+        show: true,
+        action: () => this.store.inspectComponent("source", this.store.activeComponent.path),
       },
-      () => [this.store.contextMenu.activeMenu]
-    );
+      {
+        title: "Store as global variable",
+        show: this.store.activeComponent.path.length !== 1,
+        action: () =>
+          this.store.logObjectInConsole([
+            ...this.store.activeComponent.path,
+            { type: "item", value: "component" },
+          ]),
+      },
+      {
+        title: "Inspect in Elements tab",
+        show: this.store.activeComponent.path.length !== 1,
+        action: () => this.store.inspectComponent("DOM", this.store.activeComponent.path),
+      },
+      {
+        title: "Force rerender",
+        show: this.store.activeComponent.path.length !== 1,
+        action: () => this.store.refreshComponent(this.store.activeComponent.path),
+      },
+      {
+        title: "Store observed states as global variable",
+        show: this.store.activeComponent.path.length !== 1,
+        action: () =>
+          this.store.logObjectInConsole([
+            ...this.store.activeComponent.path,
+            { type: "item", value: "subscriptions" },
+          ]),
+      },
+      {
+        title: "Inspect compiled template",
+        show: this.store.activeComponent.path.length !== 1,
+        action: () =>
+          this.store.inspectComponent("compiled template", this.store.activeComponent.path),
+      },
+      {
+        title: "Log raw template",
+        show: this.store.activeComponent.path.length !== 1,
+        action: () => this.store.inspectComponent("raw template", this.store.activeComponent.path),
+      },
+      {
+        title: "Store as global variable",
+        show: this.store.activeComponent.path.length === 1,
+        action: () => this.store.logObjectInConsole([...this.store.activeComponent.path]),
+      },
+    ];
   }
 
   openMenu(ev) {
-    this.contextMenuEvent = ev;
-    this.store.contextMenu.activeMenu = this.contextMenuId;
+    this.store.openContextMenu(ev, this.contextMenuItems);
   }
 
   toggleCategory(ev, category) {

tools/devtools/src/devtools_app/devtools_window/components_tab/details_window/details_window.xml

@@ -20,6 +20,17 @@
       </t>
     </div>
     <div class="details-container">
+      <div t-if="store.observedVariables.length and store.observedVariables.some((v) => v.visible)" id="observedVariables" class="details-panel ps-2 py-1">
+        <div class="d-flex mb-2">
+          <div class="w-100">
+            <b class="ps-2">observed variables</b>
+          </div>
+          <i title="Remove observed variables" class="fa fa-times utility-icon p-1" t-on-click.stop="() => this.store.clearObservedVariable()"></i>
+        </div>
+        <t t-foreach="store.observedVariables" t-as="observed" t-key="observed_index" t-if="observed.visible">
+          <ObjectTreeElement object="observed" index="observed_index"/>
+        </t>
+      </div>
       <div t-if="store.activeComponent.env.children.length > 0" id="env" class="details-panel ps-2 py-1">
         <div class="d-flex mb-2">
           <div class="w-100" t-on-click.stop="(ev) => this.toggleCategory(ev, 'env')">
@@ -59,7 +70,7 @@
           </t>
         </div>
       </div>
-      <div t-if="store.activeComponent.instance.children.length > 0"  id="instance" class="details-panel ps-2 py-1">
+      <div t-if="store.activeComponent.instance.children.length > 0" id="instance" class="details-panel ps-2 py-1">
         <div class="d-flex mb-2">
           <div class="w-100 text-truncate" t-on-click.stop="(ev) => this.toggleCategory(ev, 'instance')">
             <i class="fa mx-1 pointer-icon"
@@ -75,22 +86,19 @@
           <ObjectTreeElement object="instance"/>
         </t>
       </div>
-    </div>
-    <div t-if="store.contextMenu.activeMenu === contextMenuId" class="custom-menu" t-ref="contextmenu">
-      <ul class="my-1">
-        <li t-on-click.stop="() => this.store.inspectComponent('source', store.activeComponent.path)" class="custom-menu-item py-1 px-4">Inspect source code</li>
-        <t t-if="store.activeComponent.path.length !== 1">
-          <li t-on-click.stop="() => this.store.logObjectInConsole([...store.activeComponent.path, { type: 'item', value: 'component'}])" class="custom-menu-item py-1 px-4">Store as global variable</li>
-          <li t-on-click.stop="() => this.store.inspectComponent('DOM', store.activeComponent.path)" class="custom-menu-item py-1 px-4">Inspect in Elements tab</li>
-          <li t-on-click.stop="() => this.store.refreshComponent(store.activeComponent.path)" class="custom-menu-item py-1 px-4">Force rerender</li>
-          <li t-on-click.stop="() => this.store.logObjectInConsole([...store.activeComponent.path, { type: 'item', value: 'subscriptions'}])" class="custom-menu-item py-1 px-4">Store observed states as global variable</li>
-          <li t-on-click.stop="() => this.store.inspectComponent('compiled template', store.activeComponent.path)" class="custom-menu-item py-1 px-4">Inspect compiled template</li>
-          <li t-on-click.stop="() => this.store.inspectComponent('raw template', store.activeComponent.path)" class="custom-menu-item py-1 px-4">Log raw template</li>
+      <div t-if="store.activeComponent.hooks?.children.length > 0" id="hooks" class="details-panel ps-2 py-1">
+        <div class="d-flex mb-2">
+          <div class="w-100" t-on-click.stop="(ev) => this.toggleCategory(ev, 'hooks')">
+            <i class="fa mx-1 pointer-icon"
+              t-att-class="{'fa-caret-right': !store.activeComponent.hooks.toggled, 'fa-caret-down': store.activeComponent.hooks.toggled}"
+            /><b>hooks</b>
+          </div>
+          <i title="Remove breakpoints" class="fa fa-times utility-icon p-1" t-on-click.stop="() => this.store.removeBreakpoints()"></i>
+        </div>
+        <t t-if="store.activeComponent.hooks.toggled" t-foreach="store.activeComponent.hooks.children" t-as="hook" t-key="hook_index">
+          <ObjectTreeElement object="hook"/>
         </t>
-        <t t-else="">
-          <li t-on-click.stop="() => this.store.logObjectInConsole([...store.activeComponent.path])" class="custom-menu-item py-1 px-4">Store as global variable</li>
-        </t>
-      </ul>
+      </div>
     </div>
   </t>
-</templates>
+</templates>

tools/devtools/src/devtools_app/devtools_window/components_tab/details_window/object_tree_element/object_tree_element.js

@@ -13,19 +13,8 @@ export class ObjectTreeElement extends Component {
       menuTop: 0,
       menuLeft: 0,
     });
-    this.contextMenu = useRef("contextmenu");
     const inputRef = useRef("input");
     this.store = useStore();
-    this.contextMenuId = this.store.contextMenu.id++;
-    this.contextMenuEvent,
-      useEffect(
-        (menuId) => {
-          if (menuId === this.contextMenuId) {
-            this.store.contextMenu.open(this.contextMenuEvent, this.contextMenu.el);
-          }
-        },
-        () => [this.store.contextMenu.activeMenu]
-      );
     useEffect(
       (editMode) => {
         // Focus on the input when it is created
@@ -63,16 +52,76 @@ export class ObjectTreeElement extends Component {
     return this.props.object.depth * 0.8 + 0.3;
   }
 
+  get contextMenuItems() {
+    return [
+      {
+        title: "Store as global variable",
+        show: true,
+        action: () => this.store.logObjectInConsole(this.props.object.path),
+      },
+      {
+        title: "Inspect function source code",
+        show: this.props.object.contentType === "function",
+        action: () => this.store.inspectFunctionSource(this.props.object.path),
+      },
+      {
+        title: "Observe variable",
+        show: this.props.object.objectType !== "observed",
+        action: () => this.store.observeVariable(this.props.object.path),
+      },
+      {
+        title: "Unobserve variable",
+        show: this.props.object.objectType === "observed",
+        action: () => this.store.clearObservedVariable(this.props.index),
+      },
+      {
+        title: "Inject breakpoint on component",
+        show: this.props.object.contentType === "array" && this.props.object.objectType === "hook",
+        action: () =>
+          this.store.injectBreakpoint(this.props.object.name, this.store.activeComponent.path),
+      },
+      {
+        title: "Inject conditional breakpoint on component",
+        show: this.props.object.contentType === "array" && this.props.object.objectType === "hook",
+        action: () => {
+          const condition = window.prompt("Enter the condition");
+          if (condition) {
+            this.store.injectBreakpoint(
+              this.props.object.name,
+              this.store.activeComponent.path,
+              false,
+              condition
+            );
+          }
+        },
+      },
+      {
+        title: "Inject breakpoint on instance",
+        show:
+          this.props.object.contentType === "array" &&
+          this.props.object.objectType === "hook" &&
+          !["mounted", "willStart"].includes(this.props.object.name),
+        action: () =>
+          this.store.injectBreakpoint(
+            this.props.object.name,
+            this.store.activeComponent.path,
+            true
+          ),
+      },
+    ];
+  }
+
   openMenu(ev) {
-    this.contextMenuEvent = ev;
-    this.store.contextMenu.activeMenu = this.contextMenuId;
+    this.store.openContextMenu(ev, this.contextMenuItems);
   }
 
   setupEditMode() {
-    if (!this.state.editMode) {
-      if (!this.props.object.hasChildren) {
-        this.state.editMode = true;
-      }
+    if (
+      !this.state.editMode &&
+      !this.props.object.hasChildren &&
+      !(this.props.object.objectType === "observed")
+    ) {
+      this.state.editMode = true;
     }
   }
 

tools/devtools/src/devtools_app/devtools_window/components_tab/details_window/object_tree_element/object_tree_element.xml

@@ -4,7 +4,7 @@
     <div class="m-0 p-0 text-nowrap w-100 object-line"
       t-att-class="props.class + (props.object.hasChildren ? ' bg-feedback' : '')"
       t-on-click.stop="() => this.store.toggleObjectTreeElementsDisplay(this.props.object)"
-      t-on-contextmenu.prevent="openMenu" 
+      t-on-contextmenu.prevent="openMenu"
     >
       <div t-attf-style="padding-left: {{objectPadding}}rem">
         <i class="fa px-1 pointer-icon caret"
@@ -12,7 +12,7 @@
           t-attf-style="visibility: {{props.object.hasChildren ? '' : 'hidden'}};"
         />
         <t t-esc="props.object.name"/>
-        <t t-if="props.object.content.length > 0">: </t> 
+        <t t-if="props.object.content.length > 0">: </t>
         <t t-if="props.object.contentType == 'getter'">
           <span class="getter-content object-content" t-att-class="objectLineClass" t-on-click.stop="() => this.store.loadGetterContent(this.props.object)">
             <t t-esc="props.object.content"/>
@@ -20,25 +20,17 @@
         </t>
         <t t-else="">
           <span class="object-content" t-att-class="objectLineClass" t-on-dblclick.stop="setupEditMode">
-            <t t-if="state.editMode">   
+            <t t-if="state.editMode">
               <input t-attf-id="objectEditionInput/{{pathAsString}}" t-ref="input" type="text" placeholder="" t-att-value="props.object.content" t-on-keydown.stop="editObject"/>
             </t>
             <t t-else="">
               <t t-esc="props.object.content"/>
             </t>
-          </span> 
+          </span>
         </t>
         <span t-if="keyChanges" class="key-changes ms-1 badge p-1" title="Key additions/deletions are observed">+/-</span>
       </div>
     </div>
-    <div t-if="store.contextMenu.activeMenu === contextMenuId" class="custom-menu" t-ref="contextmenu">
-      <ul class="my-1">
-        <li t-on-click="() => this.store.logObjectInConsole(this.props.object.path)" class="custom-menu-item py-1 px-4 text-nowrap">Store as global variable</li>
-        <t t-if='props.object.contentType == "function"'>
-          <li t-on-click="() => this.store.inspectFunctionSource(this.props.object.path)" class="custom-menu-item py-1 px-4 text-nowrap">Inspect function source code</li>
-        </t>
-      </ul>
-    </div>
     <t t-if="props.object.toggled" t-key="contextMenuId">
       <t t-foreach="props.object.children" t-as="child" t-key="child_index">
         <ObjectTreeElement object="child" class="this.classFor(child)"/>

tools/devtools/src/devtools_app/devtools_window/components_tab/tree_element/tree_element.js

@@ -16,10 +16,7 @@ export class TreeElement extends Component {
       searched: false,
     });
     this.store = useStore();
-    this.contextMenu = useRef("contextmenu");
     this.element = useRef("element");
-    this.contextMenuId = this.store.contextMenu.id++;
-    this.contextMenuEvent;
     this.stringifiedPath = JSON.stringify(this.props.component.path);
     // Scroll to the selected element when it changes
     onMounted(() => {
@@ -38,15 +35,6 @@ export class TreeElement extends Component {
       },
       () => [this.props.component.selected]
     );
-    // Open the context menu when the ids match
-    useEffect(
-      (menuId) => {
-        if (menuId === this.contextMenuId) {
-          this.store.contextMenu.open(this.contextMenuEvent, this.contextMenu.el);
-        }
-      },
-      () => [this.store.contextMenu.activeMenu]
-    );
     // Effect to apply a short highlight effect to the component when it is rendered
     useEffect(
       () => {
@@ -86,9 +74,86 @@ export class TreeElement extends Component {
     return minimizeKey(this.props.component.key);
   }
 
+  get contextMenuItems() {
+    return [
+      {
+        title: "Expand children",
+        show: true,
+        action: () => this.store.toggleComponentAndChildren(this.props.component, true),
+      },
+      {
+        title: "Fold all children",
+        show: true,
+        action: () => this.store.toggleComponentAndChildren(this.props.component, false),
+      },
+      {
+        title: "Fold direct children",
+        show: true,
+        action: () => this.store.foldDirectChildren(this.props.component),
+      },
+      {
+        title: "Inspect source code",
+        show: true,
+        action: () => this.store.inspectComponent("source", this.props.component.path),
+      },
+      {
+        title: "Store as global variable",
+        show: this.props.component.path.length !== 1,
+        action: () =>
+          this.store.logObjectInConsole([
+            ...this.props.component.path,
+            { type: "item", value: "component" },
+          ]),
+      },
+      {
+        title: "Inspect in Elements tab",
+        show: this.props.component.path.length !== 1,
+        action: () => this.store.inspectComponent("DOM", this.props.component.path),
+      },
+      {
+        title: "Force rerender",
+        show: this.props.component.path.length !== 1,
+        action: () => this.store.refreshComponent(this.props.component.path),
+      },
+      {
+        title: "Store observed states as global variable",
+        show: this.props.component.path.length !== 1,
+        action: () =>
+          this.store.logObjectInConsole([
+            ...this.props.component.path,
+            { type: "item", value: "subscriptions" },
+          ]),
+      },
+      {
+        title: "Inspect compiled template",
+        show: this.props.component.path.length !== 1,
+        action: () => this.store.inspectComponent("compiled template", this.props.component.path),
+      },
+      {
+        title: "Log raw template",
+        show: this.props.component.path.length !== 1,
+        action: () => this.store.inspectComponent("raw template", this.props.component.path),
+      },
+      {
+        title: "Store as global variable",
+        show: this.props.component.path.length === 1,
+        action: () => this.store.logObjectInConsole([...this.props.component.path]),
+      },
+      {
+        title: "Don't fold component by default",
+        show: this.store.settings.componentsToggleBlacklist.has(this.props.component.name),
+        action: () => this.toggleComponentToBlacklist(),
+      },
+      {
+        title: "Fold component by default",
+        show: !this.store.settings.componentsToggleBlacklist.has(this.props.component.name),
+        action: () => this.toggleComponentToBlacklist(),
+      },
+    ];
+  }
+
   openMenu(ev) {
-    this.contextMenuEvent = ev;
-    this.store.contextMenu.activeMenu = this.contextMenuId;
+    this.store.openContextMenu(ev, this.contextMenuItems);
   }
 
   // Expand/fold the component node

tools/devtools/src/devtools_app/devtools_window/components_tab/tree_element/tree_element.xml

@@ -2,15 +2,15 @@
 <templates xml:space="preserve">
   <t t-name="devtools.TreeElement" owl="1">
     <div t-ref="element"
-      t-att-class="{'component-selected': props.component.selected,'component-highlighted': props.component.highlighted}" 
-      class="tree-component m-0 p-0 w-100 text-nowrap user-select-none" 
-      t-on-contextmenu.prevent="openMenu" 
-      t-on-mouseover.stop="() => this.store.highlightComponent(props.component.path)" 
+      t-att-class="{'component-selected': props.component.selected,'component-highlighted': props.component.highlighted}"
+      class="tree-component m-0 p-0 w-100 text-nowrap user-select-none"
+      t-on-contextmenu.prevent="openMenu"
+      t-on-mouseover.stop="() => this.store.highlightComponent(props.component.path)"
       t-on-click.stop="toggleComponent"
     >
       <div class="component-wrapper" t-attf-style="padding-left: {{componentPadding}}rem">
         <i class="fa px-1 pointer-icon caret"
-          t-att-class="{'fa-caret-right': !props.component.toggled, 'fa-caret-down': props.component.toggled}" 
+          t-att-class="{'fa-caret-right': !props.component.toggled, 'fa-caret-down': props.component.toggled}"
           t-on-click.stop="toggleDisplay"
           t-attf-style="{{props.component.children.length > 0 ? '' : 'visibility: hidden;'}}"
         />
@@ -26,29 +26,6 @@
         <span t-if="props.component.depth">&gt;</span>
         <span class="version" t-else="">owl=<t t-esc="props.component.version"/></span>
       </div>
-      <div t-if="store.contextMenu.activeMenu === contextMenuId" class="custom-menu" t-ref="contextmenu">
-        <ul class="my-1">
-          <li t-on-click.stop="() => this.store.toggleComponentAndChildren(props.component, true)" class="custom-menu-item py-1 px-4">Expand children</li>
-          <li t-on-click.stop="() => this.store.toggleComponentAndChildren(props.component, false)" class="custom-menu-item py-1 px-4">Fold all children</li>
-          <li t-on-click.stop="() => this.store.foldDirectChildren(props.component)" class="custom-menu-item py-1 px-4">Fold direct children</li>
-          <li t-on-click.stop="() => this.store.inspectComponent('source', props.component.path)" class="custom-menu-item py-1 px-4">Inspect source code</li>
-          <t t-if="props.component.path.length !== 1">
-            <li t-on-click.stop="() => this.store.logObjectInConsole([...props.component.path, { type: 'item', value: 'component'}])" class="custom-menu-item py-1 px-4">Store as global variable</li>
-            <li t-on-click.stop="() => this.store.inspectComponent('DOM', props.component.path)" class="custom-menu-item py-1 px-4">Inspect in Elements tab</li>
-            <li t-on-click.stop="() => this.store.refreshComponent(props.component.path)" class="custom-menu-item py-1 px-4">Force rerender</li>
-            <li t-on-click.stop="() => this.store.logObjectInConsole([...props.component.path, { type: 'item', value: 'subscriptions'}])" class="custom-menu-item py-1 px-4">Store observed states as global variable</li>
-            <li t-on-click.stop="() => this.store.inspectComponent('compiled template', props.component.path)" class="custom-menu-item py-1 px-4">Inspect compiled template</li>
-            <li t-on-click.stop="() => this.store.inspectComponent('raw template', props.component.path)" class="custom-menu-item py-1 px-4">Log raw template</li>
-          </t>
-          <t t-else="">
-            <li t-on-click.stop="() => this.store.logObjectInConsole([...props.component.path])" class="custom-menu-item py-1 px-4">Store as global variable</li>
-          </t>
-          <li t-on-click.stop="() => this.toggleComponentToBlacklist()" class="custom-menu-item py-1 px-4">
-            <t t-if="store.settings.componentsToggleBlacklist.has(props.component.name)">Don't fold component by default</t>
-            <t t-else="">Fold component by default</t>
-          </li>
-        </ul>
-      </div>
     </div>
     <t t-if="props.component.toggled">
       <t t-foreach="props.component.children" t-as="child" t-key="child.key">

tools/devtools/src/devtools_app/devtools_window/devtools_window.js

@@ -1,13 +1,14 @@
 const { Component } = owl;
-import { ComponentsTab } from "./components_tab/components_tab";
-import { Tab } from "./tab/tab";
-import { ProfilerTab } from "./profiler_tab/profiler_tab";
+import { ContextMenu } from "../context_menu/context_menu";
 import { useStore } from "../store/store";
+import { ComponentsTab } from "./components_tab/components_tab";
+import { ProfilerTab } from "./profiler_tab/profiler_tab";
+import { Tab } from "./tab/tab";
 
 export class DevtoolsWindow extends Component {
   static props = [];
   static template = "devtools.DevtoolsWindow";
-  static components = { ComponentsTab, Tab, ProfilerTab };
+  static components = { ComponentsTab, Tab, ProfilerTab, ContextMenu };
   setup() {
     this.store = useStore();
   }

tools/devtools/src/devtools_app/devtools_window/devtools_window.xml

@@ -28,6 +28,7 @@
           Owl is not loaded on this page.
         </div>
       </t>
+      <ContextMenu t-if="store.contextMenu" items="store.contextMenu.items"/>
     </div>
   </t>
 </templates>

tools/devtools/src/devtools_app/devtools_window/profiler_tab/event/event.js

@@ -1,24 +1,13 @@
 import { minimizeKey } from "../../../../utils";
 import { useStore } from "../../../store/store";
 
-const { Component, useEffect, useRef } = owl;
+const { Component } = owl;
 
 export class Event extends Component {
   static template = "devtools.Event";
 
   setup() {
     this.store = useStore();
-    this.componentContextMenu = useRef("componentContextmenu");
-    this.componentContextMenuId = this.store.contextMenu.id++;
-    this.contextMenuEvent,
-      useEffect(
-        (menuId) => {
-          if (menuId === this.componentContextMenuId) {
-            this.store.contextMenu.open(this.contextMenuEvent, this.componentContextMenu.el);
-          }
-        },
-        () => [this.store.contextMenu.activeMenu]
-      );
   }
 
   // Formatting for displaying the key of the component
@@ -54,13 +43,65 @@ export class Event extends Component {
     }
   }
 
-  openComponentMenu(ev) {
+  get contextMenuItems() {
+    return [
+      {
+        title: "Inspect source code",
+        show: true,
+        action: () => this.store.inspectComponent("source", this.props.event.path),
+      },
+      {
+        title: "Store as global variable",
+        show: this.props.event.path.length !== 1,
+        action: () =>
+          this.store.logObjectInConsole([
+            ...this.props.event.path,
+            { type: "item", value: "component" },
+          ]),
+      },
+      {
+        title: "Inspect in Elements tab",
+        show: this.props.event.path.length !== 1,
+        action: () => this.store.inspectComponent("DOM", this.props.event.path),
+      },
+      {
+        title: "Force rerender",
+        show: this.props.event.path.length !== 1,
+        action: () => this.store.refreshComponent(this.props.event.path),
+      },
+      {
+        title: "Store observed states as global variable",
+        show: this.props.event.path.length !== 1,
+        action: () =>
+          this.store.logObjectInConsole([
+            ...this.props.event.path,
+            { type: "item", value: "subscriptions" },
+          ]),
+      },
+      {
+        title: "Inspect compiled template",
+        show: this.props.event.path.length !== 1,
+        action: () => this.store.inspectComponent("compiled template", this.props.event.path),
+      },
+      {
+        title: "Log raw template",
+        show: this.props.event.path.length !== 1,
+        action: () => this.store.inspectComponent("raw template", this.props.event.path),
+      },
+      {
+        title: "Store as global variable",
+        show: this.props.event.path.length === 1,
+        action: () => this.store.logObjectInConsole([...this.props.event.path]),
+      },
+    ];
+  }
+
+  openMenu(ev) {
     if (this.props.event.type === "destroy") {
       return;
     } else {
       ev.preventDefault();
-      this.contextMenuEvent = ev;
-      this.store.contextMenu.activeMenu = this.componentContextMenuId;
+      this.store.openContextMenu(ev, this.contextMenuItems);
     }
   }
 }

tools/devtools/src/devtools_app/devtools_window/profiler_tab/event/event.xml

@@ -8,11 +8,11 @@
             t-att-class="{'fa-caret-right': !props.event.toggled, 'fa-caret-down': props.event.toggled}"
             t-attf-style="visibility: {{props.event.origin ? '' : 'hidden'}};"
           />
-          <t t-esc="props.event.type"/>: 
+          <t t-esc="props.event.type"/>:
           &lt;<span style="cursor:pointer; color: var(--component-color);"
-                t-on-click.stop="() => this.store.selectComponent(props.event.path)" 
-                t-on-mouseover.stop="() => this.store.highlightComponent(props.event.path)"  
-                t-on-contextmenu="openComponentMenu" 
+                t-on-click.stop="() => this.store.selectComponent(props.event.path)"
+                t-on-mouseover.stop="() => this.store.highlightComponent(props.event.path)"
+                t-on-contextmenu="openMenu"
                 t-esc="props.event.component"
               />
           <t t-if="minimizedKey.length > 0">
@@ -29,10 +29,10 @@
         <div class="my-0 pt-1 object-line">
           <i class="fa fa-caret-right mx-1 pe-2" style="visibility: hidden;"></i>
           <span>
-            origin: 
-            &lt;<span style="cursor:pointer; color: var(--component-color);" 
-                  t-on-click.stop="() => this.store.selectComponent(props.event.origin.path)" 
-                  t-on-mouseover.stop="() => this.store.highlightComponent(props.event.origin.path)" 
+            origin:
+            &lt;<span style="cursor:pointer; color: var(--component-color);"
+                  t-on-click.stop="() => this.store.selectComponent(props.event.origin.path)"
+                  t-on-mouseover.stop="() => this.store.highlightComponent(props.event.origin.path)"
                   t-esc="props.event.origin.component"
                 />
             <t t-if="originMinimizedKey.length > 0">
@@ -43,22 +43,6 @@
           </span>
         </div>
       </t>
-      <div t-if="store.contextMenu.activeMenu === componentContextMenuId" class="custom-menu" t-ref="componentContextmenu">
-        <ul class="my-1">
-          <li t-on-click.stop="() => this.store.inspectComponent('source', props.event.path)" class="custom-menu-item py-1 px-4">Inspect source code</li>
-          <t t-if="props.event.path.length !== 1">
-            <li t-on-click.stop="() => this.store.logObjectInConsole([...props.event.path, { type: 'item', value: 'component'}])" class="custom-menu-item py-1 px-4">Store as global variable</li>
-            <li t-on-click.stop="() => this.store.inspectComponent('DOM', props.event.path)" class="custom-menu-item py-1 px-4">Inspect in Elements tab</li>
-            <li t-on-click.stop="() => this.store.refreshComponent(props.event.path)" class="custom-menu-item py-1 px-4">Force rerender</li>
-            <li t-on-click.stop="() => this.store.logObjectInConsole([...props.event.path, { type: 'item', value: 'subscriptions'}])" class="custom-menu-item py-1 px-4">Store observed states as global variable</li>
-            <li t-on-click.stop="() => this.store.inspectComponent('compiled template', props.event.path)" class="custom-menu-item py-1 px-4">Inspect compiled template</li>
-            <li t-on-click.stop="() => this.store.inspectComponent('raw template', props.event.path)" class="custom-menu-item py-1 px-4">Log raw template</li>
-          </t>
-          <t t-else="">
-            <li t-on-click.stop="() => this.store.logObjectInConsole([...props.event.path])" class="custom-menu-item py-1 px-4">Store as global variable</li>
-          </t>
-        </ul>
-      </div>
     </div>
   </t>
 </templates>

tools/devtools/src/devtools_app/devtools_window/profiler_tab/event_node/event_node.js

@@ -1,7 +1,7 @@
 import { minimizeKey } from "../../../../utils";
 import { useStore } from "../../../store/store";
 
-const { Component, useRef, useEffect } = owl;
+const { Component } = owl;
 
 export class EventNode extends Component {
   static template = "devtools.EventNode";
@@ -10,33 +10,89 @@ export class EventNode extends Component {
 
   setup() {
     this.store = useStore();
-    this.nodeContextMenu = useRef("nodeContextMenu");
-    this.nodeContextMenuId = this.store.contextMenu.id++;
-    this.componentContextMenu = useRef("componentContextmenu");
-    this.componentContextMenuId = this.store.contextMenu.id++;
-    this.contextMenuEvent,
-      useEffect(
-        (menuId) => {
-          if (menuId === this.nodeContextMenuId) {
-            this.store.contextMenu.open(this.contextMenuEvent, this.nodeContextMenu.el);
-          }
-          if (menuId === this.componentContextMenuId) {
-            this.store.contextMenu.open(this.contextMenuEvent, this.componentContextMenu.el);
-          }
-        },
-        () => [this.store.contextMenu.activeMenu]
-      );
   }
 
   get eventPadding() {
     return this.props.event.depth * 0.8 + 0.3;
   }
 
+  get nodeContextMenuItems() {
+    return [
+      {
+        title: "Expand children",
+        show: true,
+        action: () => this.store.toggleEventAndChildren(this.props.event, true),
+      },
+      {
+        title: "Fold all children",
+        show: true,
+        action: () => this.store.toggleEventAndChildren(this.props.event, false),
+      },
+      {
+        title: "Fold direct children",
+        show: true,
+        action: () => this.store.foldDirectChildren(this.props.event),
+      },
+    ];
+  }
+
+  get componentContextMenuItems() {
+    return [
+      {
+        title: "Inspect source code",
+        show: true,
+        action: () => this.store.inspectComponent("source", this.props.event.path),
+      },
+      {
+        title: "Store as global variable",
+        show: this.props.event.path.length !== 1,
+        action: () =>
+          this.store.logObjectInConsole([
+            ...this.props.event.path,
+            { type: "item", value: "component" },
+          ]),
+      },
+      {
+        title: "Inspect in Elements tab",
+        show: this.props.event.path.length !== 1,
+        action: () => this.store.inspectComponent("DOM", this.props.event.path),
+      },
+      {
+        title: "Force rerender",
+        show: this.props.event.path.length !== 1,
+        action: () => this.store.refreshComponent(this.props.event.path),
+      },
+      {
+        title: "Store observed states as global variable",
+        show: this.props.event.path.length !== 1,
+        action: () =>
+          this.store.logObjectInConsole([
+            ...this.props.event.path,
+            { type: "item", value: "subscriptions" },
+          ]),
+      },
+      {
+        title: "Inspect compiled template",
+        show: this.props.event.path.length !== 1,
+        action: () => this.store.inspectComponent("compiled template", this.props.event.path),
+      },
+      {
+        title: "Log raw template",
+        show: this.props.event.path.length !== 1,
+        action: () => this.store.inspectComponent("raw template", this.props.event.path),
+      },
+      {
+        title: "Store as global variable",
+        show: this.props.event.path.length === 1,
+        action: () => this.store.logObjectInConsole([...this.props.event.path]),
+      },
+    ];
+  }
+
   openNodeMenu(ev) {
     if (this.props.event.children.length) {
       ev.preventDefault();
-      this.contextMenuEvent = ev;
-      this.store.contextMenu.activeMenu = this.nodeContextMenuId;
+      this.store.openContextMenu(ev, this.nodeContextMenuItems);
     }
   }
 
@@ -45,8 +101,7 @@ export class EventNode extends Component {
       return;
     } else {
       ev.preventDefault();
-      this.contextMenuEvent = ev;
-      this.store.contextMenu.activeMenu = this.componentContextMenuId;
+      this.store.openContextMenu(ev, this.componentContextMenuItems);
     }
   }
 

tools/devtools/src/devtools_app/devtools_window/profiler_tab/event_node/event_node.xml

@@ -2,8 +2,8 @@
 <templates xml:space="preserve">
   <t t-name="devtools.EventNode" owl="1">
     <div class="my-0 p-0 object-line"
-      t-on-click.stop="toggleDisplay" 
-      t-on-contextmenu="openNodeMenu" 
+      t-on-click.stop="toggleDisplay"
+      t-on-contextmenu="openNodeMenu"
     >
       <div class="text-nowrap" t-attf-style="padding-left: {{eventPadding}}rem">
         <i class="fa px-1 pointer-icon caret"
@@ -11,11 +11,11 @@
           t-attf-style="visibility: {{props.event.children.length > 0 ? '' : 'hidden'}};"
         />
         <span>
-          <t t-esc="props.event.type"/>: 
-          &lt;<span style="cursor:pointer; color: var(--component-color);" 
-                t-on-click.stop="() => this.store.selectComponent(props.event.path)" 
-                t-on-mouseover.stop="() => this.store.highlightComponent(props.event.path)" 
-                t-on-contextmenu.stop="openComponentMenu" 
+          <t t-esc="props.event.type"/>:
+          &lt;<span style="cursor:pointer; color: var(--component-color);"
+                t-on-click.stop="() => this.store.selectComponent(props.event.path)"
+                t-on-mouseover.stop="() => this.store.highlightComponent(props.event.path)"
+                t-on-contextmenu.stop="openComponentMenu"
                 t-esc="props.event.component"/>
           <t t-if="minimizedKey.length > 0">
             <span t-if="minimizedKey.length > 0" style="color: var(--key-name);"> key</span>=<span style="color: var(--key-content);">
@@ -28,29 +28,6 @@
         </span>
       </div>
     </div>
-    <div t-if="store.contextMenu.activeMenu === nodeContextMenuId" class="custom-menu" t-ref="nodeContextMenu">
-      <ul class="my-1">
-        <li t-on-click.stop="() => this.store.toggleEventAndChildren(props.event, true)" class="custom-menu-item py-1 px-4">Expand children</li>
-        <li t-on-click.stop="() => this.store.toggleEventAndChildren(props.event, false)" class="custom-menu-item py-1 px-4">Fold all children</li>
-        <li t-on-click.stop="() => this.store.foldDirectChildren(props.event)" class="custom-menu-item py-1 px-4">Fold direct children</li>
-      </ul>
-    </div>
-    <div t-if="store.contextMenu.activeMenu === componentContextMenuId" class="custom-menu" t-ref="componentContextmenu">
-      <ul class="my-1">
-        <li t-on-click.stop="() => this.store.inspectComponent('source', props.event.path)" class="custom-menu-item py-1 px-4">Inspect source code</li>
-        <t t-if="props.event.path.length !== 1">
-          <li t-on-click.stop="() => this.store.logObjectInConsole([...props.event.path, { type: 'item', value: 'component'}])" class="custom-menu-item py-1 px-4">Store as global variable</li>
-          <li t-on-click.stop="() => this.store.inspectComponent('DOM', props.event.path)" class="custom-menu-item py-1 px-4">Inspect in Elements tab</li>
-          <li t-on-click.stop="() => this.store.refreshComponent(props.event.path)" class="custom-menu-item py-1 px-4">Force rerender</li>
-          <li t-on-click.stop="() => this.store.logObjectInConsole([...props.event.path, { type: 'item', value: 'subscriptions'}])" class="custom-menu-item py-1 px-4">Store observed states as global variable</li>
-          <li t-on-click.stop="() => this.store.inspectComponent('compiled template', props.event.path)" class="custom-menu-item py-1 px-4">Inspect compiled template</li>
-          <li t-on-click.stop="() => this.store.inspectComponent('raw template', props.event.path)" class="custom-menu-item py-1 px-4">Log raw template</li>
-        </t>
-        <t t-else="">
-          <li t-on-click.stop="() => this.store.logObjectInConsole([...props.event.path])" class="custom-menu-item py-1 px-4">Store as global variable</li>
-        </t>
-      </ul>
-    </div>
     <t t-if="props.event.toggled">
       <t t-foreach="props.event.children" t-as="child" t-key="child.id">
         <EventNode event="child"/>

tools/devtools/src/devtools_app/store/store.js

@@ -11,30 +11,7 @@ export const store = reactive({
     darkmode: false,
     componentsToggleBlacklist: new Set(),
   },
-  contextMenu: {
-    id: 0,
-    activeMenu: -1,
-    // Opens the context menu corresponding with the given menu html element
-    open(event, menu) {
-      const menuWidth = menu.offsetWidth;
-      const menuHeight = menu.offsetHeight;
-      let x = event.clientX;
-      let y = event.clientY;
-      if (x + menuWidth > window.innerWidth) {
-        x = window.innerWidth - menuWidth;
-      }
-      if (y + menuHeight > window.innerHeight) {
-        y = window.innerHeight - menuHeight;
-      }
-      menu.style.left = x + "px";
-      // Need 25px offset because of the main navbar from the browser devtools
-      menu.style.top = y - 25 + "px";
-    },
-    // Close the currently displayed context menu
-    close() {
-      this.activeMenu = -1;
-    },
-  },
+  contextMenu: null,
   isFirefox: IS_FIREFOX,
   frameUrls: ["top"],
   activeFrame: "top",
@@ -56,9 +33,11 @@ export const store = reactive({
     props: { toggled: true, children: [] },
     env: { toggled: false, children: [] },
     instance: { toggled: true, children: [] },
+    hooks: { toggled: true, children: [] },
     version: "1.0",
   },
   selectedElement: null,
+  observedVariables: [],
   componentSearch: {
     search: "",
     searchResults: [],
@@ -93,6 +72,16 @@ export const store = reactive({
     evalFunctionInWindow("disableHTMLSelector", [], this.activeFrame);
   },
 
+  openContextMenu(event, items) {
+    this.contextMenu = {
+      position: {
+        x: event.clientX,
+        y: event.clientY,
+      },
+      items,
+    };
+  },
+
   // Load all data related to the components tree using the global hook loaded on the page
   // Use fromOld to specify if we want to keep most of the toggled/selected data of the old tree
   // when generating the new one
@@ -577,6 +566,42 @@ export const store = reactive({
     }
   },
 
+  async injectBreakpoint(hook, path, instanceOnly = false, condition = "1") {
+    path = [...path];
+    await evalFunctionInWindow(
+      "injectBreakpoint",
+      [hook, path, instanceOnly, condition],
+      this.activeFrame
+    );
+    await this.loadComponentsTree(true);
+  },
+
+  async removeBreakpoints() {
+    await evalFunctionInWindow("removeBreakpoints", [], this.activeFrame);
+    await this.loadComponentsTree(true);
+  },
+
+  async observeVariable(path) {
+    this.observedVariables.push({ path: [...path], visible: false });
+    this.observedVariables = await evalFunctionInWindow(
+      "getObservedVariables",
+      [store.observedVariables],
+      store.activeFrame
+    );
+    await browserInstance.storage.local.set({
+      observedVariables: toRaw(this.observedVariables).map((o) => o.path),
+    });
+  },
+
+  clearObservedVariable(index) {
+    if (index !== undefined) {
+      this.observedVariables.splice(index, 1);
+    } else {
+      this.observedVariables = [];
+    }
+    browserInstance.storage.local.set({ observedVariables: toRaw(this.observedVariables) });
+  },
+
   // Trigger the highlight on the component in the page
   highlightComponent(path) {
     evalFunctionInWindow("highlightComponent", [path], this.activeFrame);
@@ -646,8 +671,9 @@ async function init() {
   store.updateIFrameList();
 
   // Global listeners to close the currently shown context menu when the user clicks or opens another
-  document.addEventListener("click", () => store.contextMenu.close(), { capture: true });
-  document.addEventListener("contextmenu", () => store.contextMenu.close(), { capture: true });
+  document.addEventListener("click", () => (store.contextMenu = null), { capture: true });
+  document.addEventListener("contextmenu", () => (store.contextMenu = null), { capture: true });
+  window.addEventListener("blur", () => (store.contextMenu = null), { capture: true });
 
   // Make sure the events recorder is at its initial state in every frame
   for (const frame of store.frameUrls) {
@@ -666,6 +692,16 @@ async function init() {
       }
     }
   }, 500);
+  // Refresh observed variables values every 200 ms
+  setInterval(async () => {
+    if (store.owlStatus) {
+      store.observedVariables = await evalFunctionInWindow(
+        "getObservedVariables",
+        [[...store.observedVariables]],
+        store.activeFrame
+      );
+    }
+  }, 200);
 }
 
 let rootRendersTimeout = false;
@@ -760,6 +796,16 @@ async function loadSettings() {
       storage.owlDevtoolsComponentsToggleBlacklist
     );
   }
+  // Observed variables
+  if (storage.observedVariables) {
+    store.observedVariables = [];
+    for (const path of storage.observedVariables) {
+      store.observedVariables.push({
+        path: [...path],
+        visible: false,
+      });
+    }
+  }
 }
 
 // Function to handle and store a batch of events coming from the page

tools/devtools/src/page_scripts/owl_devtools_global_hook.js

@@ -51,6 +51,8 @@
       this.requestedFrame = false;
       this.enabledSelector = false;
       this.eventsBatch = [];
+      this.breakpointsClassMap = new Map();
+      this.breakpointsHookMap = new Map();
       // Object which defines how different types of data should be displayed when passed to the devtools
       this.serializer = {
         // Defines how leaf object nodes should be displayed in the extension when inside a bigger structure
@@ -58,15 +60,16 @@
         // The asConstructorName parameter can be passed to change the display of objects and functions to
         // be their constructor name (useful for prototype, map and set display)
         serializeItem(value, asConstructorName = false) {
-          if (typeof value === "array") {
-            return "Array(" + value.length + ")";
-          } else if (typeof value === "object") {
+          if (typeof value === "object") {
             if (value == null) {
               return "null";
             }
             if (asConstructorName) {
               return value.constructor.name;
             }
+            if (value instanceof Array) {
+              return "Array(" + value.length + ")";
+            }
             return "{...}";
           } else if (typeof value === "undefined") {
             return "undefined";
@@ -109,23 +112,39 @@
         object(obj) {
           const result = [];
           let length = 0;
-          for (const [key, value] of Object.entries(obj)) {
-            if (length > 25) {
-              result.push("...");
-              break;
+          if (obj instanceof String) {
+            result[0] = `'${obj.toString()}'`;
+          } else if (obj instanceof Array) {
+            return `${obj.constructor.name} ${this.array([...obj])}`;
+          } else if (obj instanceof Number) {
+            result[0] = obj.toString();
+          } else {
+            for (const key of Reflect.ownKeys(obj)) {
+              if (length > 25) {
+                result.push("...");
+                break;
+              }
+              let element;
+              if (Object.getOwnPropertyDescriptor(obj, key).hasOwnProperty("get")) {
+                element = key.toString() + ": (...)";
+              } else {
+                element = key.toString() + ": " + this.serializeItem(obj[key]);
+              }
+              length += element.length;
+              result.push(element);
+            }
+            for (const key of Object.getOwnPropertySymbols(obj)) {
+              if (length > 25) {
+                result.push("...");
+                break;
+              }
+              const element = key.toString() + ": " + this.serializeItem(obj[key]);
+              length += element.length;
+              result.push(element);
             }
-            const element = key + ": " + this.serializeItem(value);
-            length += element.length;
-            result.push(element);
           }
-          for (const key of Object.getOwnPropertySymbols(obj)) {
-            if (length > 25) {
-              result.push("...");
-              break;
-            }
-            const element = key.toString() + ": " + this.serializeItem(obj[key]);
-            length += element.length;
-            result.push(element);
+          if (obj.constructor && obj.constructor.name !== "Object") {
+            return obj.constructor.name + " {" + result.join(", ") + "}";
           }
           return "{" + result.join(", ") + "}";
         },
@@ -684,7 +703,7 @@
             try {
               obj = Object.getOwnPropertyDescriptor(obj, key.value).get.call(obj);
             } catch (e) {
-              obj = e.toString();
+              obj = "Exception: " + e.toString();
             }
             break;
           case "prototype getter":
@@ -702,13 +721,13 @@
               try {
                 obj = Object.getOwnPropertyDescriptor(obj, key.value).get;
               } catch (e) {
-                obj = e.toString();
+                obj = "Exception: " + e.toString();
               }
             } else {
               try {
                 obj = obj[key.value];
               } catch (e) {
-                obj = e.toString();
+                obj = "Exception: " + e.toString();
               }
             }
         }
@@ -721,15 +740,20 @@
 
     // Returns the asked property given its global path
     getObjectProperty(path) {
-      // Just return the corresponding app if path is of length 1
-      if (path.length === 1) {
+      // Just return the corresponding app if path is of length 1 and not simplified
+      if (path.length === 1 && !isNaN(path[0])) {
         return [...this.apps][path[0]];
       }
       // Path to the component node is only strings, becomes objects for properties
       const index = path.findIndex((key) => typeof key !== "string");
-      const componentNode = this.getComponentNode(path.slice(0, index));
-      const obj = this.getObject(componentNode, path.slice(index));
-      return obj;
+      if (index === -1) {
+        return this.getComponentNode(path);
+      }
+      const componentNode = this.getComponentNode(index === 1 ? [path[0]] : path.slice(0, index));
+      if (componentNode) {
+        return this.getObject(componentNode, path.slice(index));
+      }
+      return "Exception: component not found";
     }
 
     // Returns a modified version of an object node that has compatible format with the devtools ObjectTreeElement component
@@ -777,6 +801,11 @@
           child.name = "value";
           obj = parentObj[1];
           break;
+        case "getter":
+          child.name = key.value;
+          obj = parentObj[key.value];
+          break;
+        case "prototype getter":
         case "set entry":
         case "map entry":
         case "item":
@@ -792,6 +821,8 @@
                 parentObj
               ).findIndex((sym) => sym === key.value);
               child.path[child.path.length - 1].value = key.value.toString();
+            } else if (key.hasOwnProperty("symbolIndex")) {
+              obj = parentObj[Object.getOwnPropertySymbols(parentObj)[key.symbolIndex]];
             } else {
               obj = parentObj[key.value];
             }
@@ -823,7 +854,7 @@
               child.contentType = "set";
               child.hasChildren = true;
               break;
-            case obj instanceof Array:
+            case obj.constructor?.name === "Array":
               child.contentType = "array";
               child.hasChildren = obj.length > 0;
               break;
@@ -831,10 +862,12 @@
               child.contentType = "function";
               child.hasChildren = true;
               break;
-            case obj instanceof Object:
+            case typeof obj === "object":
               child.contentType = "object";
               child.hasChildren =
-                Object.keys(obj).length || Object.getOwnPropertySymbols(obj).length;
+                Object.keys(obj).length > 0 ||
+                Object.getOwnPropertySymbols(obj).length > 0 ||
+                obj.constructor.name !== "Object";
               break;
             default:
               child.contentType = typeof obj;
@@ -877,12 +910,15 @@
           path.shift();
         }
         // the value is either "props" or "env" here
-        if (objType !== "instance") {
+        if (objType !== "instance" && objType !== "hook") {
           obj = oldTree[path[0].value].children;
           path.shift();
           // there is nothing otherwise but extension side it is in instance
-        } else {
+        } else if (objType === "instance") {
           obj = oldTree.instance.children;
+        } else {
+          obj = oldTree.hooks.children;
+          path.shift();
         }
         // the first element here is directly in an array instead of a children array
         obj = obj[path[0].childIndex];
@@ -1013,36 +1049,40 @@
           break;
         case "object":
         case "function":
-          Reflect.ownKeys(obj).forEach((key) => {
-            if (
-              key !== "__proto__" &&
-              Object.getOwnPropertyDescriptor(obj, key).hasOwnProperty("get")
-            ) {
-              let child = {
-                name: key,
-                depth: depth,
-                toggled: false,
-                objectType: objType,
-                path: [...path, { type: "getter", value: key, childIndex: children.length }],
-                contentType: "getter",
-                content: "(...)",
-                hasChildren: false,
-                children: [],
-              };
-              children.push(child);
-            }
-            const child = this.serializeObjectChild(
-              obj,
-              { type: "item", value: key, childIndex: children.length },
-              depth,
-              objType,
-              path,
-              oldBranch?.children[index],
-              oldTree
-            );
-            if (child) children.push(child);
-            index++;
-          });
+          Reflect.ownKeys(obj)
+            .sort(compareKeys)
+            .forEach((key) => {
+              if (
+                key !== "__proto__" &&
+                Object.getOwnPropertyDescriptor(obj, key).hasOwnProperty("get")
+              ) {
+                let child = {
+                  name: key,
+                  depth: depth,
+                  toggled: false,
+                  objectType: objType,
+                  path: [...path, { type: "getter", value: key, childIndex: children.length }],
+                  contentType: "getter",
+                  content: "(...)",
+                  hasChildren: false,
+                  children: [],
+                };
+                children.push(child);
+              }
+              const child = this.serializeObjectChild(
+                obj,
+                { type: "item", value: key, childIndex: children.length },
+                depth,
+                objType,
+                path,
+                oldBranch?.children[index],
+                oldTree
+              );
+              if (child) {
+                children.push(child);
+              }
+              index++;
+            });
       }
       let proto = Object.getPrototypeOf(obj);
       while (proto) {
@@ -1086,25 +1126,44 @@
     }
     // Returns the Component node given its path and the root component node
     getComponentNode(path) {
-      // The node is an app and not a component
-      if (path.length === 1) {
+      // All paths that consists in an array containing a single stringified number lead to an app
+      if (path.length === 1 && !isNaN(path[0])) {
         return [...this.apps][path[0]];
       }
-      // The second element in the path will always be the root of the app
-      let node = [...this.apps][path[0]]?.root;
-      if (!node) {
-        return null;
-      }
-      for (let i = 2; i < path.length; i++) {
-        // From this point onwards, it is an object path inside the component node
-        if (typeof path[i] !== "string") {
-          break;
-        }
-        if (node.children.hasOwnProperty(path[i])) {
-          node = node.children[path[i]];
-        } else {
+      let node;
+      // If the path is longer and its first item is indeed an app number, it is a regular path
+      if (!isNaN(path[0])) {
+        // The second element in the path will always be the root of the app
+        node = [...this.apps][path[0]]?.root;
+        if (!node) {
           return null;
         }
+        for (let i = 2; i < path.length; i++) {
+          // From this point onwards, it is an object path inside the component node
+          if (typeof path[i] !== "string") {
+            break;
+          }
+          if (node.children.hasOwnProperty(path[i])) {
+            node = node.children[path[i]];
+          } else {
+            return null;
+          }
+        }
+        // If the first path item is a more complex string, it is a simplified path where elements
+        // are a series of component names and indexes separated by slashes
+      } else {
+        const simplifiedPathArray = path[0].split("/");
+        node = [...this.apps][simplifiedPathArray[0]]?.root;
+        if (node.name !== simplifiedPathArray[1]) {
+          return null;
+        }
+        for (let i = 2; i < simplifiedPathArray.length; i += 2) {
+          const key = Reflect.ownKeys(node.children)[simplifiedPathArray[i]];
+          node = node.children[key];
+          if (node.name !== simplifiedPathArray[i + 1]) {
+            return null;
+          }
+        }
       }
       return node;
     }
@@ -1142,42 +1201,46 @@
       const propsPath = isApp
         ? [...path, { type: "item", value: "props" }]
         : [...path, { type: "item", value: "component" }, { type: "item", value: "props" }];
-      Reflect.ownKeys(props).forEach((key) => {
-        let oldBranch = oldTree?.props.children[component.props.children.length];
-        const property = this.serializeObjectChild(
-          props,
-          { type: "item", value: key, childIndex: component.props.children.length },
-          0,
-          "props",
-          propsPath,
-          oldBranch,
-          oldTree
-        );
-        if (property) {
-          component.props.children.push(property);
-        }
-      });
+      Reflect.ownKeys(props)
+        .sort(compareKeys)
+        .forEach((key) => {
+          let oldBranch = oldTree?.props.children[component.props.children.length];
+          const property = this.serializeObjectChild(
+            props,
+            { type: "item", value: key, childIndex: component.props.children.length },
+            0,
+            "props",
+            propsPath,
+            oldBranch,
+            oldTree
+          );
+          if (property) {
+            component.props.children.push(property);
+          }
+        });
       // Load env of the component
       const env = isApp ? node.env : node.component.env;
       component.env = { toggled: oldTree ? oldTree.env.toggled : false, children: [] };
       const envPath = isApp
         ? [...path, { type: "item", value: "env" }]
         : [...path, { type: "item", value: "component" }, { type: "item", value: "env" }];
-      Reflect.ownKeys(env).forEach((key) => {
-        let oldBranch = oldTree?.env.children[component.env.children.length];
-        const envElement = this.serializeObjectChild(
-          env,
-          { type: "item", value: key, childIndex: component.env.children.length },
-          0,
-          "env",
-          envPath,
-          oldBranch,
-          oldTree
-        );
-        if (envElement) {
-          component.env.children.push(envElement);
-        }
-      });
+      Reflect.ownKeys(env)
+        .sort(compareKeys)
+        .forEach((key) => {
+          let oldBranch = oldTree?.env.children[component.env.children.length];
+          const envElement = this.serializeObjectChild(
+            env,
+            { type: "item", value: key, childIndex: component.env.children.length },
+            0,
+            "env",
+            envPath,
+            oldBranch,
+            oldTree
+          );
+          if (envElement) {
+            component.env.children.push(envElement);
+          }
+        });
       // Load env getters
       let obj = Object.getPrototypeOf(env);
       Reflect.ownKeys(obj).forEach((key) => {
@@ -1216,23 +1279,25 @@
       const instance = isApp ? node : node.component;
       component.instance = { toggled: oldTree ? oldTree.instance.toggled : true, children: [] };
       const instancePath = isApp ? path : [...path, { type: "item", value: "component" }];
-      Reflect.ownKeys(instance).forEach((key) => {
-        if (!["env", "props"].includes(key)) {
-          let oldBranch = oldTree?.instance.children[component.instance.children.length];
-          const instanceElement = this.serializeObjectChild(
-            instance,
-            { type: "item", value: key, childIndex: component.instance.children.length },
-            0,
-            "instance",
-            instancePath,
-            oldBranch,
-            oldTree
-          );
-          if (instanceElement) {
-            component.instance.children.push(instanceElement);
+      Reflect.ownKeys(instance)
+        .sort(compareKeys)
+        .forEach((key) => {
+          if (!["env", "props"].includes(key)) {
+            let oldBranch = oldTree?.instance.children[component.instance.children.length];
+            const instanceElement = this.serializeObjectChild(
+              instance,
+              { type: "item", value: key, childIndex: component.instance.children.length },
+              0,
+              "instance",
+              instancePath,
+              oldBranch,
+              oldTree
+            );
+            if (instanceElement) {
+              component.instance.children.push(instanceElement);
+            }
           }
-        }
-      });
+        });
       // Load instance getters
       obj = Object.getPrototypeOf(instance);
       while (obj) {
@@ -1348,6 +1413,39 @@
           component.subscriptions.children.push(subscription);
         });
       }
+      // Load hooks of the component
+      if (!isApp) {
+        component.hooks = { toggled: oldTree ? oldTree.hooks.toggled : true, children: [] };
+        const hooksList = [
+          "mounted",
+          "patched",
+          "willDestroy",
+          "willPatch",
+          "willStart",
+          "willUnmount",
+          "willUpdateProps",
+        ];
+        const hooksPath = [...instancePath, { type: "item", value: "__owl__" }];
+        Reflect.ownKeys(instance.__owl__)
+          .sort(compareKeys)
+          .forEach((key) => {
+            if (hooksList.includes(key)) {
+              let oldBranch = oldTree?.hooks.children[component.hooks.children.length];
+              const property = this.serializeObjectChild(
+                instance.__owl__,
+                { type: "item", value: key, childIndex: component.hooks.children.length },
+                0,
+                "hook",
+                hooksPath,
+                oldBranch,
+                oldTree
+              );
+              if (property) {
+                component.hooks.children.push(property);
+              }
+            }
+          });
+      }
       return component;
     }
     // Replace the content of a parsed getter object with the result of the corresponding get method
@@ -1622,6 +1720,37 @@
       }
       return children;
     }
+    getObservedVariables(current) {
+      const res = [...current];
+      for (let i = 0; i < current.length; i++) {
+        const path = current[i].path;
+        const parent = this.getObjectProperty(path.slice(0, path.length - 1));
+        if (parent && !(typeof parent === "string" && parent.startsWith("Exception: "))) {
+          const result = this.serializeObjectChild(
+            parent,
+            path.at(-1),
+            0,
+            "observed",
+            path.slice(0, path.length - 1),
+            {},
+            {}
+          );
+          result.hasChildren = false;
+          result.visible = true;
+          const index = path.findIndex((key) => typeof key !== "string");
+          if (index > 1) {
+            const componentNode = this.getComponentNode(path.slice(0, index));
+            result.path = [this.getComponentSimplifiedPath(componentNode)].concat(
+              path.slice(index)
+            );
+          }
+          res[i] = result;
+        } else {
+          res[i].visible = false;
+        }
+      }
+      return res;
+    }
     // Returns the path of the given component node
     getComponentPath(componentNode) {
       let path = [];
@@ -1638,6 +1767,23 @@
       path.unshift(index.toString());
       return path;
     }
+    // Returns the simplified path of the given component node (using component names and indexes)
+    getComponentSimplifiedPath(componentNode) {
+      let path = componentNode.name;
+      if (componentNode.parentKey) {
+        while (componentNode.parent) {
+          const previousKey = componentNode.parentKey;
+          componentNode = componentNode.parent;
+          path = `${componentNode.name}/${Reflect.ownKeys(componentNode.children).indexOf(
+            previousKey
+          )}/${path}`;
+        }
+      }
+      const appsArray = [...this.apps];
+      let index = appsArray.findIndex((app) => app === componentNode.app);
+      path = index.toString() + (path.length ? `/${path}` : "");
+      return path;
+    }
     // Store the object into a temp window variable and log it to the console
     sendObjectToConsole(path) {
       const obj = this.getObjectProperty(path);
@@ -1685,6 +1831,48 @@
       }
     }
 
+    injectBreakpoint(hook, path, instanceOnly, condition) {
+      const componentNode = this.getObjectProperty(path);
+      const injectFunctionInHook = (comp, hook, fn) => {
+        comp[hook].push(fn);
+      };
+      const originalHook = [...componentNode.component.__owl__[hook]];
+      injectFunctionInHook(componentNode.component.__owl__, hook, () => {
+        debugger;
+      });
+      if (!this.breakpointsHookMap.get([componentNode.component.__owl__, hook])) {
+        this.breakpointsHookMap.set([componentNode.component.__owl__, hook], originalHook);
+      }
+      if (!instanceOnly) {
+        const componentClass = componentNode.component.constructor;
+        const originalSetup = componentClass.prototype.setup;
+        if (!this.breakpointsClassMap.get(componentClass)) {
+          this.breakpointsClassMap.set(componentClass, originalSetup);
+        }
+        componentClass.prototype.setup = function () {
+          const debuggerFunc = () => {
+            if (eval(condition)) {
+              this;
+              debugger;
+            }
+          };
+          injectFunctionInHook(this.__owl__, hook, debuggerFunc);
+          originalSetup.call(this, ...arguments);
+        };
+      }
+    }
+
+    removeBreakpoints() {
+      for (const [component, setup] of this.breakpointsClassMap) {
+        component.prototype.setup = setup;
+      }
+      this.breakpointsClassMap.clear();
+      for (const [ref, originalHook] of this.breakpointsHookMap) {
+        ref[0][ref[1]] = originalHook;
+      }
+      this.breakpointsHookMap.clear();
+    }
+
     targetName(target, node) {
       // check on component
       const { component } = node;
@@ -1734,6 +1922,19 @@
     }
   }
 
+  function compareKeys(a, b) {
+    const isSymbolA = typeof a === "symbol";
+    const isSymbolB = typeof b === "symbol";
+
+    if (isSymbolA && !isSymbolB) {
+      return 1; // Place Symbols at the end
+    } else if (!isSymbolA && isSymbolB) {
+      return -1; // Place non-Symbols at the beginning
+    } else {
+      return String(a).localeCompare(String(b), undefined, { numeric: true }); // Sort other keys alphabetically
+    }
+  }
+
   function checkOwlStatus() {
     let owlStatus = 2;
     if (!window.__OWL__DEVTOOLS_GLOBAL_HOOK__) {

tools/release.js

@@ -140,7 +140,6 @@ async function startRelease() {
   }
 
   // ---------------------------------------------------------------------------
-
   log(`Step ${step++}/${STEPS}: Creating the release...`);
   const relaseResult = await execCommand(`gh release create v${next} dist/*.js dist/*.zip ${draft} -F ${file}`);
   if (relaseResult !== 0) {