[REL] v1.4.2

# 1.4.2

- qweb: properly handle inline expressions with lists such as '[a,b,c]'

.github/workflows/deploy.yml

@@ -14,7 +14,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [10.x, 12.x, 14.x]
+        node-version: [12.x, 14.x]
 
     steps:
     - uses: actions/checkout@v2

.gitignore

@@ -28,4 +28,7 @@ node_modules
 
 release-notes.md
 
-.rpt2_cache
+.rpt2_cache
+
+# useful in some cases
+/temp

README.md

@@ -120,7 +120,7 @@ npm install @odoo/owl
 
 If you want to use a simple `<script>` tag, the last release can be downloaded here:
 
-- [owl-1.2.1](https://github.com/odoo/owl/releases/tag/v1.2.1)
+- [owl-1.4.2](https://github.com/odoo/owl/releases/tag/v1.4.2)
 
 ## License
 

doc/learning/tutorial_todoapp.md

@@ -663,7 +663,7 @@ function makeStore() {
 
 function setup() {
   owl.config.mode = "dev";
-  const env = {store = makeStore()};
+  const env = { store: makeStore() };
   mount(App, { target: document.body, env });
 }
 ```
@@ -939,7 +939,7 @@ For reference, here is the final code:
 
   function setup() {
     owl.config.mode = "dev";
-    const env = {store = makeStore()};
+    const env = { store: makeStore() };
     mount(App, { target: document.body, env });
   }
 

doc/miscellaneous/comparison.md

@@ -4,7 +4,7 @@ OWL, React and Vue have the same main feature: they allow developers to build
 declarative user interfaces. To do that, all these frameworks uses a virtual dom. However, there are still obviously many differences.
 
 In this page, we try to highlight some of these differences. Obviously, a lot of
-effort was done to be fair. However, if you disagree with some of the points
+effort was put to be fair. However, if you disagree with some of the points
 discussed, feel free to open an issue/submit a PR to correct this text.
 
 ## Content
@@ -47,7 +47,7 @@ components are fast enough for all our usecases, and making it as simple as
 possible for developers is more valuable (for us).
 
 Also, functions or class based components are more than just syntax. Functions
-comes with a mindset of composition and class are about inheritance. Clearly,
+come with a mindset of composition and class are about inheritance. Clearly,
 both of these are important mechanisms for reusing code. Also, one does not
 exclude the other.
 

doc/reference/component.md

@@ -11,6 +11,7 @@
   - [Methods](#methods)
   - [Lifecycle](#lifecycle)
     - [`constructor(parent, props)`](#constructorparent-props)
+    - [`setup()`](#setup)
     - [`willStart()`](#willstart)
     - [`mounted()`](#mounted)
     - [`willUpdateProps(nextProps)`](#willupdatepropsnextprops)
@@ -324,7 +325,7 @@ a owl component:
 
 | Method                                           | Description                                                 |
 | ------------------------------------------------ | ----------------------------------------------------------- |
-| **[constructor](#constructorparent-props)**      | constructor                                                 |
+| **[setup](#setup)**                              | setup                                                       |
 | **[willStart](#willstart)**                      | async, before first rendering                               |
 | **[mounted](#mounted)**                          | just after component is rendered and added to the DOM       |
 | **[willUpdateProps](#willupdatepropsnextprops)** | async, before props update                                  |
@@ -369,6 +370,23 @@ class ClickCounter extends owl.Component {
 }
 ```
 
+Hook functions can be called in the constructor.
+
+#### `setup()`
+
+_setup_ is run just after the component is constructed. It is a lifecycle method,
+very similar to the _constructor_, except that it does not receive any argument.
+
+It is a valid method to call hook functions. Note that one of the main reason to
+have the `setup` hook in the component lifecycle is to make it possible to
+monkey patch it. It is a common need in the Odoo ecosystem.
+
+```javascript
+setup() {
+  useSetupAutofocus();
+}
+```
+
 #### `willStart()`
 
 willStart is an asynchronous hook that can be implemented to
@@ -771,7 +789,7 @@ template rendered with `props`. In Owl, this can be done by
 simply defining a template, that will access the `props` object:
 
 ```js
-const Welcome = xml`<h1>Hello, {props.name}</h1>`;
+const Welcome = xml`<h1>Hello, <t t-esc="props.name"/></h1>`;
 
 class MyComponent extends Component {
   static template = xml`

doc/reference/hooks.md

@@ -131,7 +131,7 @@ class SomeComponent extends Component {
 ### One rule
 
 There is only one rule: every hook for a component has to be called in the
-constructor (or in class fields):
+constructor, in the _setup_ method, or in class fields:
 
 ```js
 // ok
@@ -147,6 +147,13 @@ class SomeComponent extends Component {
   }
 }
 
+// also ok
+class SomeComponent extends Component {
+  setup() {
+    this.state = useState({ value: 0 });
+  }
+}
+
 // not ok: this is executed after the constructor is called
 class SomeComponent extends Component {
   async willStart() {

doc/reference/observer.md

@@ -15,7 +15,7 @@ use cases, there is no need to directly instantiate an observer.
 For example, this code will display `update` in the console:
 
 ```javascript
-const observer = new owl.Observer();
+const observer = new owl.core.Observer();
 observer.notifyCB = () => console.log("update");
 const obj = observer.observe({ a: { b: 1 } });
 
@@ -39,14 +39,14 @@ is incremented every time the value is observed. Sometimes, it can be useful
 to obtain that number:
 
 ```js
-const observer = new owl.Observer();
+const observer = new owl.core.Observer();
 const obj = observer.observe({ a: { b: 1 } });
 
-observer.deepRevNumber(obj.a); // 1
+observer.revNumber(obj.a); // 1
 obj.a.b = 2;
 
-observer.deepRevNumber(obj.a); // 2
+observer.revNumber(obj.a); // 2
 ```
 
-The `deepRevNumber` can also return 0, which indicates that the value is not
+The `revNumber` can also return 0, which indicates that the value is not
 observed.

doc/reference/qweb_templating_language.md

@@ -13,6 +13,8 @@
   - [Setting Variables](#setting-variables)
   - [Conditionals](#conditionals)
   - [Dynamic Attributes](#dynamic-attributes)
+  - [Dynamic Class Attribute](#dynamic-class-attribute)
+  - [Dynamic Tag Names](#dynamic-tag-names)
   - [Loops](#loops)
   - [Rendering Sub Templates](#rendering-sub-templates)
   - [Dynamic Sub Templates](#dynamic-sub-templates)
@@ -76,6 +78,7 @@ needs. Here is a list of all Owl specific directives:
 | `t-transition`           | [Defining an animation](animations.md#css-transitions)                          |
 | `t-slot`                 | [Rendering a slot](slots.md)                                                    |
 | `t-model`                | [Form input bindings](component.md#form-input-bindings)                         |
+| `t-tag`                  | [Rendering nodes with dynamic tag name](#dynamic-tag-names)                     |
 
 ## Reference
 
@@ -324,6 +327,40 @@ values) or a pair `[key, value]`. For example:
 <div t-att="['a', 'b']"/> <!-- <div a="b"></div> -->
 ```
 
+### Dynamic class attribute
+
+For convenience, Owl supports a special case for the `t-att-class` case: one can
+use an object with keys describing the classes, and values boolean value denoting
+if the class is or is not present:
+
+```xml
+<div t-att-class="{'a': true, 'b': true}"/> <!-- result: <div class="a b"></div> -->
+
+<div t-att-class="{'a b': true, 'c': true}"/> <!-- result: <div class="a b c"></div> -->
+```
+
+Note that it can be combined with normal class attribute:
+
+```xml
+<div class="a" t-att-class="{'b': true}"/> <!-- result: <div class="a b"></div> -->
+```
+
+### Dynamic tag names
+
+When writing generic components or templates, the specific concrete tag for an
+HTML element is not known yet. In those situations, the `t-tag` directive is
+useful. It simply evaluates dynamically an expression to use as a tag name. The
+template:
+
+```xml
+<t t-tag="tag">
+    <span>content</span>
+</t>
+```
+
+will be rendered as `<div><span>content</span></div>` if the `tag` context key
+is set to `div`.
+
 ### Loops
 
 QWeb has an iteration directive `t-foreach` which take an expression returning the

doc/reference/slots.md

@@ -44,7 +44,7 @@ Slots are defined by the caller, with the `t-set-slot` directive:
 ```xml
 <div t-name="SomeComponent">
   <div>some component</div>
-  <Dialog title="Some Dialog">
+  <Dialog title="'Some Dialog'">
     <t t-set-slot="content">
       <div>hey</div>
     </t>

doc/reference/tags.md

@@ -62,14 +62,14 @@ The CSS tag is useful to define a css stylesheet in the javascript file:
 
 ```js
 class MyComponent extends Component {
-    static template = xml`
+  static template = xml`
         <div class="my-component">some template</div>
     `;
-    static css`
-      .my-component {
-          color: red;
-      }
-    `;
+  static style = css`
+    .my-component {
+      color: red;
+    }
+  `;
 }
 ```
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@odoo/owl",
-  "version": "1.2.1",
+  "version": "1.4.2",
   "description": "Odoo Web Library (OWL)",
   "main": "dist/owl.cjs.js",
   "browser": "dist/owl.iife.js",
@@ -10,7 +10,7 @@
     "dist"
   ],
   "engines": {
-    "node": ">=10.15.3"
+    "node": ">=12.18.3"
   },
   "scripts": {
     "build:bundle": "rollup -c",
@@ -22,6 +22,7 @@
     "pretools:watch": "npm run build",
     "tools:watch": "npm-run-all  --parallel tools:serve \"build:* -- --watch\"",
     "prettier": "prettier {src/*.ts,src/**/*.ts,tests/*.ts,tests/**/*.ts,doc/*.md,doc/**/*.md} --write",
+    "check-formatting": "prettier {src/*.ts,src/**/*.ts,tests/*.ts,tests/**/*.ts,doc/*.md,doc/**/*.md} --check",
     "publish": "npm run build && npm publish",
     "release": "node tools/release.js"
   },
@@ -40,6 +41,7 @@
     "@types/node": "^14.11.8",
     "chalk": "^3.0.0",
     "cpx": "^1.5.0",
+    "current-git-branch": "^1.1.0",
     "git-rev-sync": "^1.12.0",
     "github-api": "^3.3.0",
     "jest": "^23.6.0",

roadmap.md

@@ -1,6 +1,6 @@
 # 🦉 OWL Roadmap 🦉
 
-- Current version: 1.2.1
+- Current version: 1.4.2
 - Status: stable
 
 This roadmap is only an attempt at predicting Owl's future.  Everything may

src/component/component.ts

@@ -44,6 +44,15 @@ interface MountOptions {
   position?: MountPosition;
 }
 
+export const enum STATUS {
+  CREATED,
+  WILLSTARTED, // willstart has been called
+  RENDERED, // first render is completed (so, vnode is now defined)
+  MOUNTED, // is ready, and in DOM. It has a valid el
+  UNMOUNTED, // has a valid el, but is not in DOM
+  DESTROYED,
+}
+
 /**
  * This is mostly an internal detail of implementation. The Meta interface is
  * useful to typecheck and describe the internal keys used by Owl to manage the
@@ -56,8 +65,7 @@ interface Internal<T extends Env> {
   depth: number;
   vnode: VNode | null;
   pvnode: VNode | null;
-  isMounted: boolean;
-  isDestroyed: boolean;
+  status: STATUS;
 
   // parent and children keys are obviously useful to setup the parent-children
   // relationship.
@@ -164,16 +172,18 @@ export class Component<Props extends {} = any, T extends Env = Env> {
         this.env.browser = browser;
       }
       this.env.qweb.on("update", this, () => {
-        if (this.__owl__.isMounted) {
-          this.render(true);
-        }
-        if (this.__owl__.isDestroyed) {
-          // this is unlikely to happen, but if a root widget is destroyed,
-          // we want to remove our subscription.  The usual way to do that
-          // would be to perform some check in the destroy method, but since
-          // it is very performance sensitive, and since this is a rare event,
-          // we simply do it lazily
-          this.env.qweb.off("update", this);
+        switch (this.__owl__.status) {
+          case STATUS.MOUNTED:
+            this.render(true);
+            break;
+          case STATUS.DESTROYED:
+            // this is unlikely to happen, but if a root widget is destroyed,
+            // we want to remove our subscription.  The usual way to do that
+            // would be to perform some check in the destroy method, but since
+            // it is very performance sensitive, and since this is a rare event,
+            // we simply do it lazily
+            this.env.qweb.off("update", this);
+            break;
         }
       });
       depth = 0;
@@ -186,8 +196,7 @@ export class Component<Props extends {} = any, T extends Env = Env> {
       depth: depth,
       vnode: null,
       pvnode: null,
-      isMounted: false,
-      isDestroyed: false,
+      status: STATUS.CREATED,
       parent: parent || null,
       children: {},
       cmap: {},
@@ -209,8 +218,20 @@ export class Component<Props extends {} = any, T extends Env = Env> {
     if (constr.style) {
       this.__applyStyles(constr);
     }
+    this.setup();
   }
 
+  /**
+   * setup is run just after the component is constructed. This is the standard
+   * location where the component can setup its hooks. It has some advantages
+   * over the constructor:
+   *  - it can be patched (useful in odoo ecosystem)
+   *  - it does not need to propagate the arguments to the super call
+   *
+   * Note: this method should not be called manually.
+   */
+  setup() {}
+
   /**
    * willStart is an asynchronous hook that can be implemented to perform some
    * action before the initial rendering of a component.
@@ -305,42 +326,49 @@ export class Component<Props extends {} = any, T extends Env = Env> {
    * Note that a component can be mounted an unmounted several times
    */
   async mount(target: HTMLElement | DocumentFragment, options: MountOptions = {}): Promise<void> {
-    const position = options.position || "last-child";
-    const __owl__ = this.__owl__;
-    if (__owl__.isMounted) {
-      if (position !== "self" && this.el!.parentNode !== target) {
-        // in this situation, we are trying to mount a component on a different
-        // target. In this case, we need to unmount first, otherwise it will
-        // not work.
-        this.unmount();
-      } else {
-        return Promise.resolve();
-      }
-    }
-    if (__owl__.isDestroyed) {
-      throw new Error("Cannot mount a destroyed component");
-    }
-    if (__owl__.currentFiber) {
-      const currentFiber = __owl__.currentFiber;
-      if (currentFiber.target === target && currentFiber.position === position) {
-        return scheduler.addFiber(currentFiber);
-      } else {
-        scheduler.rejectFiber(currentFiber, "Mounting operation cancelled");
-      }
-    }
     if (!(target instanceof HTMLElement || target instanceof DocumentFragment)) {
       let message = `Component '${this.constructor.name}' cannot be mounted: the target is not a valid DOM node.`;
       message += `\nMaybe the DOM is not ready yet? (in that case, you can use owl.utils.whenReady)`;
       throw new Error(message);
     }
-    const fiber = new Fiber(null, this, true, target, position);
-    fiber.shouldPatch = false;
-    if (!__owl__.vnode) {
-      this.__prepareAndRender(fiber, () => {});
-    } else {
-      this.__render(fiber);
+    const position = options.position || "last-child";
+    const __owl__ = this.__owl__;
+    const currentFiber = __owl__.currentFiber;
+
+    switch (__owl__.status) {
+      case STATUS.CREATED: {
+        const fiber = new Fiber(null, this, true, target, position);
+        fiber.shouldPatch = false;
+        this.__prepareAndRender(fiber, () => {});
+        return scheduler.addFiber(fiber);
+      }
+      case STATUS.WILLSTARTED:
+      case STATUS.RENDERED:
+        currentFiber.target = target;
+        currentFiber.position = position;
+        return scheduler.addFiber(currentFiber);
+
+      case STATUS.UNMOUNTED: {
+        const fiber = new Fiber(null, this, true, target, position);
+        fiber.shouldPatch = false;
+        this.__render(fiber);
+        return scheduler.addFiber(fiber);
+      }
+
+      case STATUS.MOUNTED: {
+        if (position !== "self" && this.el!.parentNode !== target) {
+          const fiber = new Fiber(null, this, true, target, position);
+          fiber.shouldPatch = false;
+          this.__render(fiber);
+          return scheduler.addFiber(fiber);
+        } else {
+          return Promise.resolve();
+        }
+      }
+
+      case STATUS.DESTROYED:
+        throw new Error("Cannot mount a destroyed component");
     }
-    return scheduler.addFiber(fiber);
   }
 
   /**
@@ -348,7 +376,7 @@ export class Component<Props extends {} = any, T extends Env = Env> {
    * to call willUnmount calls and remove the component from the DOM.
    */
   unmount() {
-    if (this.__owl__.isMounted) {
+    if (this.__owl__.status === STATUS.MOUNTED) {
       this.__callWillUnmount();
       this.el!.remove();
     }
@@ -366,10 +394,7 @@ export class Component<Props extends {} = any, T extends Env = Env> {
   async render(force: boolean = false): Promise<void> {
     const __owl__ = this.__owl__;
     const currentFiber = __owl__.currentFiber;
-    if (!__owl__.isMounted && !currentFiber) {
-      // if we get here, this means that the component was either never mounted,
-      // or was unmounted and some state change  triggered a render. Either way,
-      // we do not want to actually render anything in this case.
+    if (!__owl__.vnode && !currentFiber) {
       return;
     }
     if (currentFiber && !currentFiber.isRendered && !currentFiber.isCompleted) {
@@ -378,15 +403,13 @@ export class Component<Props extends {} = any, T extends Env = Env> {
     // if we aren't mounted at this point, it implies that there is a
     // currentFiber that is already rendered (isRendered is true), so we are
     // about to be mounted
-    const isMounted = __owl__.isMounted;
+    const status = __owl__.status;
     const fiber = new Fiber(null, this, force, null, null);
     Promise.resolve().then(() => {
-      if (__owl__.isMounted || !isMounted) {
-        if (fiber.isCompleted) {
+      if (__owl__.status === STATUS.MOUNTED || status !== STATUS.MOUNTED) {
+        if (fiber.isCompleted || fiber.isRendered) {
           return;
         }
-        // we are mounted (__owl__.isMounted), or if we are currently being
-        // mounted (!isMounted), so we call __render
         this.__render(fiber);
       } else {
         // we were mounted when render was called, but we aren't anymore, so we
@@ -410,7 +433,7 @@ export class Component<Props extends {} = any, T extends Env = Env> {
    */
   destroy() {
     const __owl__ = this.__owl__;
-    if (!__owl__.isDestroyed) {
+    if (__owl__.status !== STATUS.DESTROYED) {
       const el = this.el;
       this.__destroy(__owl__.parent);
       if (el) {
@@ -455,13 +478,12 @@ export class Component<Props extends {} = any, T extends Env = Env> {
    */
   __destroy(parent: Component | null) {
     const __owl__ = this.__owl__;
-    const isMounted = __owl__.isMounted;
-    if (isMounted) {
+    if (__owl__.status === STATUS.MOUNTED) {
       if (__owl__.willUnmountCB) {
         __owl__.willUnmountCB();
       }
       this.willUnmount();
-      __owl__.isMounted = false;
+      __owl__.status = STATUS.UNMOUNTED;
     }
     const children = __owl__.children;
     for (let key in children) {
@@ -472,7 +494,7 @@ export class Component<Props extends {} = any, T extends Env = Env> {
       delete parent.__owl__.children[id];
       __owl__.parent = null;
     }
-    __owl__.isDestroyed = true;
+    __owl__.status = STATUS.DESTROYED;
     delete __owl__.vnode;
     if (__owl__.currentFiber) {
       __owl__.currentFiber.isCompleted = true;
@@ -482,7 +504,7 @@ export class Component<Props extends {} = any, T extends Env = Env> {
   __callMounted() {
     const __owl__ = this.__owl__;
 
-    __owl__.isMounted = true;
+    __owl__.status = STATUS.MOUNTED;
     __owl__.currentFiber = null;
     this.mounted();
     if (__owl__.mountedCB) {
@@ -496,7 +518,7 @@ export class Component<Props extends {} = any, T extends Env = Env> {
       __owl__.willUnmountCB();
     }
     this.willUnmount();
-    __owl__.isMounted = false;
+    __owl__.status = STATUS.UNMOUNTED;
     if (__owl__.currentFiber) {
       __owl__.currentFiber.isCompleted = true;
       __owl__.currentFiber.root.counter = 0;
@@ -504,7 +526,7 @@ export class Component<Props extends {} = any, T extends Env = Env> {
     const children = __owl__.children;
     for (let id in children) {
       const comp = children[id];
-      if (comp.__owl__.isMounted) {
+      if (comp.__owl__.status === STATUS.MOUNTED) {
         comp.__callWillUnmount();
       }
     }
@@ -625,18 +647,25 @@ export class Component<Props extends {} = any, T extends Env = Env> {
     }
     return p._template;
   }
+
   async __prepareAndRender(fiber: Fiber, cb: CallableFunction) {
     try {
-      await Promise.all([this.willStart(), this.__owl__.willStartCB && this.__owl__.willStartCB()]);
+      const proms = Promise.all([
+        this.willStart(),
+        this.__owl__.willStartCB && this.__owl__.willStartCB(),
+      ]);
+      this.__owl__.status = STATUS.WILLSTARTED;
+      await proms;
+      if (this.__owl__.status === <any>STATUS.DESTROYED) {
+        return Promise.resolve();
+      }
     } catch (e) {
       fiber.handleError(e);
       return Promise.resolve();
     }
-    if (this.__owl__.isDestroyed) {
-      return Promise.resolve();
-    }
     if (!fiber.isCompleted) {
       this.__render(fiber);
+      this.__owl__.status = STATUS.RENDERED;
       cb();
     }
   }
@@ -659,7 +688,7 @@ export class Component<Props extends {} = any, T extends Env = Env> {
       for (let childKey in __owl__.children) {
         const child = __owl__.children[childKey];
         const childOwl = child.__owl__;
-        if (!childOwl.isMounted && childOwl.parentLastFiberId < fiber.id) {
+        if (childOwl.status !== STATUS.MOUNTED && childOwl.parentLastFiberId < fiber.id) {
           // we only do here a "soft" destroy, meaning that we leave the child
           // dom node alone, without removing it.  Most of the time, it does not
           // matter, because the child component is already unmounted.  However,
@@ -706,17 +735,6 @@ export class Component<Props extends {} = any, T extends Env = Env> {
     }
   }
 
-  /**
-   * Only called by qweb t-component directive (when t-keepalive is set)
-   */
-  __remount() {
-    const __owl__ = this.__owl__;
-    if (!__owl__.isMounted) {
-      __owl__.isMounted = true;
-      this.mounted();
-    }
-  }
-
   /**
    * Apply default props (only top level).
    *

src/component/directive.ts

@@ -1,6 +1,7 @@
 import { QWeb } from "../qweb/index";
 import { INTERP_REGEXP } from "../qweb/compilation_context";
 import { makeHandlerCode, MODS_CODE } from "../qweb/extensions";
+import { STATUS } from "./component";
 
 //------------------------------------------------------------------------------
 // t-component
@@ -244,7 +245,18 @@ QWeb.addDirective({
       .join(",");
     let componentID = ctx.generateID();
 
-    const templateKey = ctx.generateTemplateKey();
+    let hasDefinedKey = false;
+    let templateKey;
+    if (node.tagName === "t" && !node.hasAttribute("t-key") && value.match(INTERP_REGEXP)) {
+      defineComponentKey();
+      const id = ctx.generateID();
+      // the ___ is to make sure we have no possible conflict with normal
+      // template keys
+      ctx.addLine(`let k${id} = '___' + componentKey${componentID}`);
+      templateKey = `k${id}`;
+    } else {
+      templateKey = ctx.generateTemplateKey();
+    }
     let ref = node.getAttribute("t-ref");
     let refExpr = "";
     let refKey: string = "";
@@ -290,7 +302,7 @@ QWeb.addDirective({
       if (tattClass) {
         let tattExpr = ctx.formatExpression(tattClass);
         if (tattExpr[0] !== "{" || tattExpr[tattExpr.length - 1] !== "}") {
-          tattExpr = `utils.toObj(${tattExpr})`;
+          tattExpr = `utils.toClassObj(${tattExpr})`;
         }
         if (classAttr) {
           ctx.addLine(`Object.assign(${classObj}, ${tattExpr})`);
@@ -335,7 +347,7 @@ QWeb.addDirective({
     }
     if (hasDynamicProps) {
       const dynamicProp = ctx.formatExpression(node.getAttribute("t-props")!);
-      ctx.addLine(`let props${componentID} = Object.assign({${propStr}}, ${dynamicProp});`);
+      ctx.addLine(`let props${componentID} = Object.assign({}, ${dynamicProp}, {${propStr}});`);
     } else {
       ctx.addLine(`let props${componentID} = {${propStr}};`);
     }
@@ -354,14 +366,14 @@ QWeb.addDirective({
     // SLOTS
     const hasSlots = node.childNodes.length;
 
-    let scope = hasSlots ? `Object.assign(Object.create(context), scope)` : "undefined";
+    let scope = hasSlots ? `utils.combine(context, scope)` : "undefined";
 
     ctx.addIf(`w${componentID}`);
 
     // need to update component
     let styleCode = "";
     if (tattStyle) {
-      styleCode = `.then(()=>{if (w${componentID}.__owl__.isDestroyed) {return};w${componentID}.el.style=${tattStyle};});`;
+      styleCode = `.then(()=>{if (w${componentID}.__owl__.status === ${STATUS.DESTROYED}) {return};w${componentID}.el.style=${tattStyle};});`;
     }
     ctx.addLine(
       `w${componentID}.__updateProps(props${componentID}, extra.fiber, ${scope})${styleCode};`
@@ -377,14 +389,17 @@ QWeb.addDirective({
     ctx.addElse();
 
     // new component
-    let dynamicFallback = "";
-    if (!value.match(INTERP_REGEXP)) {
-      dynamicFallback = `|| ${ctx.formatExpression(value)}`;
+    function defineComponentKey() {
+      if (!hasDefinedKey) {
+        const interpValue = ctx.interpolate(value);
+        ctx.addLine(`let componentKey${componentID} = ${interpValue};`);
+        hasDefinedKey = true;
+      }
     }
-    const interpValue = ctx.interpolate(value);
-    ctx.addLine(`let componentKey${componentID} = ${interpValue};`);
+    defineComponentKey();
+    const contextualValue = value.match(INTERP_REGEXP) ? "false" : ctx.formatExpression(value);
     ctx.addLine(
-      `let W${componentID} = context.constructor.components[componentKey${componentID}] || QWeb.components[componentKey${componentID}]${dynamicFallback};`
+      `let W${componentID} = ${contextualValue} || context.constructor.components[componentKey${componentID}] || QWeb.components[componentKey${componentID}];`
     );
 
     // maybe only do this in dev mode...
@@ -454,12 +469,17 @@ QWeb.addDirective({
         }
       }
       if (clone.childNodes.length) {
+        let hasContent = false;
         const t = clone.ownerDocument!.createElement("t");
         for (let child of Object.values(clone.childNodes)) {
+          hasContent =
+            hasContent || (child instanceof Text ? Boolean(child.textContent.trim().length) : true);
           t.appendChild(child);
         }
-        const slotFn = qweb._compile(`slot_default_template`, { elem: t, hasParent: true });
-        QWeb.slots[`${slotId}_default`] = slotFn;
+        if (hasContent) {
+          const slotFn = qweb._compile(`slot_default_template`, { elem: t, hasParent: true });
+          QWeb.slots[`${slotId}_default`] = slotFn;
+        }
       }
     }
 

src/component/fiber.ts

@@ -1,5 +1,5 @@
 import { h, VNode } from "../vdom/index";
-import { Component, MountPosition } from "./component";
+import { Component, MountPosition, STATUS } from "./component";
 import { scheduler } from "./scheduler";
 
 /**
@@ -107,6 +107,8 @@ export class Fiber {
    */
   _reuseFiber(oldFiber: Fiber) {
     oldFiber.cancel(); // cancel children fibers
+    oldFiber.target = this.target || oldFiber.target;
+    oldFiber.position = this.position || oldFiber.position;
     oldFiber.isCompleted = false; // keep the root fiber alive
     oldFiber.isRendered = false; // the fiber has to be re-rendered
     if (oldFiber.child) {
@@ -188,7 +190,8 @@ export class Fiber {
   complete() {
     let component = this.component;
     this.isCompleted = true;
-    if (!this.target && !component.__owl__.isMounted) {
+    const status = component.__owl__.status;
+    if (status === STATUS.DESTROYED) {
       return;
     }
 
@@ -202,14 +205,16 @@ export class Fiber {
     const patchLen = patchQueue.length;
 
     // call willPatch hook on each fiber of patchQueue
-    for (let i = 0; i < patchLen; i++) {
-      const fiber = patchQueue[i];
-      if (fiber.shouldPatch) {
-        component = fiber.component;
-        if (component.__owl__.willPatchCB) {
-          component.__owl__.willPatchCB();
+    if (status === STATUS.MOUNTED) {
+      for (let i = 0; i < patchLen; i++) {
+        const fiber = patchQueue[i];
+        if (fiber.shouldPatch) {
+          component = fiber.component;
+          if (component.__owl__.willPatchCB) {
+            component.__owl__.willPatchCB();
+          }
+          component.willPatch();
         }
-        component.willPatch();
       }
     }
 
@@ -250,8 +255,9 @@ export class Fiber {
           component.__owl__.pvnode!.elm = component.__owl__.vnode!.elm;
         }
       }
-      if (fiber === component.__owl__.currentFiber) {
-        component.__owl__.currentFiber = null;
+      const compOwl = component.__owl__;
+      if (fiber === compOwl.currentFiber) {
+        compOwl.currentFiber = null;
       }
     }
 
@@ -271,16 +277,24 @@ export class Fiber {
     }
 
     // call patched/mounted hook on each fiber of (reversed) patchQueue
-    for (let i = patchLen - 1; i >= 0; i--) {
-      const fiber = patchQueue[i];
-      component = fiber.component;
-      if (fiber.shouldPatch && !this.target) {
-        component.patched();
-        if (component.__owl__.patchedCB) {
-          component.__owl__.patchedCB();
+    if (status === STATUS.MOUNTED || inDOM) {
+      for (let i = patchLen - 1; i >= 0; i--) {
+        const fiber = patchQueue[i];
+        component = fiber.component;
+        if (fiber.shouldPatch && !this.target) {
+          component.patched();
+          if (component.__owl__.patchedCB) {
+            component.__owl__.patchedCB();
+          }
+        } else {
+          component.__callMounted();
         }
-      } else if (this.target ? inDOM : true) {
-        component.__callMounted();
+      }
+    } else {
+      for (let i = patchLen - 1; i >= 0; i--) {
+        const fiber = patchQueue[i];
+        component = fiber.component;
+        component.__owl__.status = STATUS.UNMOUNTED;
       }
     }
   }
@@ -312,22 +326,43 @@ export class Fiber {
 
     const qweb = component.env.qweb;
     let root = component;
-    let canCatch = false;
-    while (component && !(canCatch = !!component.catchError)) {
-      root = component;
-      component = component.__owl__.parent!;
-    }
-    qweb.trigger("error", error);
 
-    if (canCatch) {
-      component.catchError!(error);
-    } else {
+    function handle(error) {
+      let canCatch = false;
+      qweb.trigger("error", error);
+      while (component && !(canCatch = !!component.catchError)) {
+        root = component;
+        component = component.__owl__.parent!;
+      }
+      if (canCatch) {
+        try {
+          component.catchError!(error);
+        } catch (e) {
+          root = component;
+          component = component.__owl__.parent!;
+          return handle(e);
+        }
+        return true;
+      }
+      return false;
+    }
+
+    let isHandled = handle(error);
+
+    if (!isHandled) {
       // the 3 next lines aim to mark the root fiber as being in error, and
       // to force it to end, without waiting for its children
       this.root.counter = 0;
       this.root.error = error;
       scheduler.flush();
-      root.destroy();
+      // at this point, the state of the application is corrupted and we could
+      // have a lot of issues or crashes. So we destroy the application in a try
+      // catch and swallow these errors because the fiber is already in error,
+      // and this is the actual issue that needs to be solved, not those followup
+      // errors.
+      try {
+        root.destroy();
+      } catch (e) {}
     }
   }
 }

src/config.ts

@@ -20,10 +20,10 @@ Object.defineProperty(config, "mode", {
   set(mode: string) {
     QWeb.dev = mode === "dev";
     if (QWeb.dev) {
-      const url = `https://github.com/odoo/owl/blob/master/doc/reference/config.md#mode`;
-      console.warn(
-        `Owl is running in 'dev' mode.  This is not suitable for production use. See ${url} for more information.`
-      );
+      console.info(`Owl is running in 'dev' mode.
+
+This is not suitable for production use.
+See https://github.com/odoo/owl/blob/master/doc/reference/config.md#mode for more information.`);
     } else {
       console.log(`Owl is now running in 'prod' mode.`);
     }

src/qweb/base_directives.ts

@@ -281,7 +281,9 @@ QWeb.addDirective({
 
     // Step 4: add the appropriate function call to current component
     // ------------------------------------------------
-    const parentComponent = `utils.getComponent(context)`;
+    const parentComponent = ctx.rootContext.shouldDefineParent
+      ? `parent`
+      : `utils.getComponent(context)`;
     const key = ctx.generateTemplateKey();
     const parentNode = ctx.parentNode ? `c${ctx.parentNode}` : "result";
     const extra = `Object.assign({}, extra, {parentNode: ${parentNode}, parent: ${parentComponent}, key: ${key}})`;

src/qweb/expression_parser.ts

@@ -29,14 +29,14 @@ const RESERVED_WORDS = "true,false,NaN,null,undefined,debugger,console,window,in
   ","
 );
 
-const WORD_REPLACEMENT = {
+const WORD_REPLACEMENT = Object.assign(Object.create(null), {
   and: "&&",
   or: "||",
   gt: ">",
   gte: ">=",
   lt: "<",
   lte: "<=",
-};
+});
 
 export interface QWebVar {
   id: string; // foo
@@ -57,6 +57,7 @@ type TKind =
   | "RIGHT_PAREN"
   | "COMMA"
   | "VALUE"
+  | "TEMPLATE_STRING"
   | "SYMBOL"
   | "OPERATOR"
   | "COLON";
@@ -67,9 +68,10 @@ interface Token {
   originalValue?: string;
   size?: number;
   varName?: string;
+  replace?: Function;
 }
 
-const STATIC_TOKEN_MAP: { [key: string]: TKind } = {
+const STATIC_TOKEN_MAP: { [key: string]: TKind } = Object.assign(Object.create(null), {
   "{": "LEFT_BRACE",
   "}": "RIGHT_BRACE",
   "[": "LEFT_BRACKET",
@@ -78,7 +80,7 @@ const STATIC_TOKEN_MAP: { [key: string]: TKind } = {
   ",": "COMMA",
   "(": "LEFT_PAREN",
   ")": "RIGHT_PAREN",
-};
+});
 
 // note that the space after typeof is relevant. It makes sure that the formatted
 // expression has a space after typeof
@@ -89,7 +91,7 @@ type Tokenizer = (expr: string) => Token | false;
 let tokenizeString: Tokenizer = function (expr) {
   let s = expr[0];
   let start = s;
-  if (s !== "'" && s !== '"') {
+  if (s !== "'" && s !== '"' && s !== "`") {
     return false;
   }
   let i = 1;
@@ -111,6 +113,17 @@ let tokenizeString: Tokenizer = function (expr) {
     throw new Error("Invalid expression");
   }
   s += start;
+  if (start === "`") {
+    return {
+      type: "TEMPLATE_STRING",
+      value: s,
+      replace(replacer) {
+        return s.replace(/\$\{(.*?)\}/g, (match, group) => {
+          return "${" + replacer(group) + "}";
+        });
+      },
+    };
+  }
   return { type: "VALUE", value: s };
 };
 
@@ -210,6 +223,10 @@ export function tokenize(expr: string): Token[] {
 // Expression "evaluator"
 //------------------------------------------------------------------------------
 
+const isLeftSeparator = (token) => token && (token.type === "LEFT_BRACE" || token.type === "COMMA");
+const isRightSeparator = (token) =>
+  token && (token.type === "RIGHT_BRACE" || token.type === "COMMA");
+
 /**
  * This is the main function exported by this file. This is the code that will
  * process an expression (given as a string) and returns another expression with
@@ -238,13 +255,39 @@ export function tokenize(expr: string): Token[] {
 export function compileExprToArray(expr: string, scope: { [key: string]: QWebVar }): Token[] {
   scope = Object.create(scope);
   const tokens = tokenize(expr);
-  for (let i = 0; i < tokens.length; i++) {
+
+  let i = 0;
+  let stack = []; // to track last opening [ or {
+
+  while (i < tokens.length) {
     let token = tokens[i];
     let prevToken = tokens[i - 1];
     let nextToken = tokens[i + 1];
+    let groupType = stack[stack.length - 1];
+
+    switch (token.type) {
+      case "LEFT_BRACE":
+      case "LEFT_BRACKET":
+        stack.push(token.type);
+        break;
+      case "RIGHT_BRACE":
+      case "RIGHT_BRACKET":
+        stack.pop();
+    }
+
     let isVar = token.type === "SYMBOL" && !RESERVED_WORDS.includes(token.value);
     if (token.type === "SYMBOL" && !RESERVED_WORDS.includes(token.value)) {
       if (prevToken) {
+        // normalize missing tokens: {a} should be equivalent to {a:a}
+        if (
+          groupType === "LEFT_BRACE" &&
+          isLeftSeparator(prevToken) &&
+          isRightSeparator(nextToken)
+        ) {
+          tokens.splice(i + 1, 0, { type: "COLON", value: ":" }, { ...token });
+          nextToken = tokens[i + 1];
+        }
+
         if (prevToken.type === "OPERATOR" && prevToken.value === ".") {
           isVar = false;
         } else if (prevToken.type === "LEFT_BRACE" || prevToken.type === "COMMA") {
@@ -254,6 +297,9 @@ export function compileExprToArray(expr: string, scope: { [key: string]: QWebVar
         }
       }
     }
+    if (token.type === "TEMPLATE_STRING") {
+      token.value = token.replace((expr) => compileExpr(expr, scope));
+    }
     if (nextToken && nextToken.type === "OPERATOR" && nextToken.value === "=>") {
       if (token.type === "RIGHT_PAREN") {
         let j = i - 1;
@@ -278,6 +324,7 @@ export function compileExprToArray(expr: string, scope: { [key: string]: QWebVar
         token.value = `scope['${token.value}']`;
       }
     }
+    i++;
   }
   return tokens;
 }

src/qweb/extensions.ts

@@ -1,6 +1,8 @@
+import { STATUS } from "../component/component";
 import { VNode } from "../vdom/index";
 import { INTERP_REGEXP } from "./compilation_context";
 import { QWeb } from "./qweb";
+import { browser } from "../browser";
 
 /**
  * Owl QWeb Extensions
@@ -74,9 +76,10 @@ export function makeHandlerCode(
     // we need to capture every variable in it
     putInCache = false;
     code = ctx.captureExpression(value);
+    code = `const res = (() => { return ${code} })(); if (typeof res === 'function') { res(e) }`;
   }
   const modCode = mods.map((mod) => modcodes[mod]).join("");
-  let handler = `function (e) {if (!context.__owl__.isMounted){return}${modCode}${code}}`;
+  let handler = `function (e) {if (context.__owl__.status === ${STATUS.DESTROYED}){return}${modCode}${code}}`;
   if (putInCache) {
     const key = ctx.generateTemplateKey(event);
     ctx.addLine(`extra.handlers[${key}] = extra.handlers[${key}] || ${handler};`);
@@ -196,7 +199,14 @@ function whenTransitionEnd(elm: HTMLElement, cb) {
   const durations: Array<string> = (styles.transitionDuration || "").split(", ");
   const timeout: number = getTimeout(delays, durations);
   if (timeout > 0) {
-    elm.addEventListener("transitionend", cb, { once: true });
+    const transitionEndCB = () => {
+      if (!elm.parentNode) return;
+      cb();
+      browser.clearTimeout(fallbackTimeout);
+      elm.removeEventListener("transitionend", transitionEndCB);
+    };
+    elm.addEventListener("transitionend", transitionEndCB, { once: true });
+    const fallbackTimeout = browser.setTimeout(transitionEndCB, timeout + 1);
   } else {
     cb();
   }

src/qweb/qweb.ts

@@ -80,7 +80,7 @@ const NODE_HOOKS_PARAMS = {
 };
 
 interface Utils {
-  toObj(expr: any): Object;
+  toClassObj(expr: any): Object;
   shallowEqual(p1: Object, p2: Object): boolean;
   [key: string]: any;
 }
@@ -111,20 +111,39 @@ function vDomToString(vdom: VNode[]): string {
 
 const UTILS: Utils = {
   zero: Symbol("zero"),
-  toObj(expr) {
+  toClassObj(expr) {
+    const result = {};
     if (typeof expr === "string") {
+      // we transform here a list of classes into an object:
+      //  'hey you' becomes {hey: true, you: true}
       expr = expr.trim();
       if (!expr) {
         return {};
       }
       let words = expr.split(/\s+/);
-      let result = {};
       for (let i = 0; i < words.length; i++) {
         result[words[i]] = true;
       }
       return result;
     }
-    return expr;
+    // this is already an object, but we may need to split keys:
+    // {'a': true, 'b c': true} should become {a: true, b: true, c: true}
+    for (let key in expr) {
+      const value = expr[key];
+      const words = key.split(/\s+/);
+      for (let word of words) {
+        result[word] = value;
+      }
+    }
+    return result;
+  },
+  combine(context, scope) {
+    const clone = Object.create(context);
+    while (!isComponent(scope)) {
+      Object.assign(clone, scope);
+      scope = scope.__proto__;
+    }
+    return clone;
   },
   shallowEqual,
   addNameSpace(vnode) {
@@ -203,6 +222,7 @@ export class QWeb extends EventBus {
     att: 1,
     attf: 1,
     translation: 1,
+    tag: 1,
   };
   static DIRECTIVES: Directive[] = [];
 
@@ -435,6 +455,7 @@ export class QWeb extends EventBus {
       ctx.variables = Object.create(null);
       ctx.parentNode = ctx.generateID();
       ctx.allowMultipleRoots = true;
+      ctx.shouldDefineParent = true;
       ctx.hasParentWidget = true;
       ctx.shouldDefineResult = false;
       ctx.addLine(`let c${ctx.parentNode} = extra.parentNode;`);
@@ -614,14 +635,22 @@ export class QWeb extends EventBus {
       }
     }
 
-    if (node.nodeName !== "t") {
-      let nodeID = this._compileGenericNode(node, ctx, withHandlers);
-      ctx = ctx.withParent(nodeID);
+    if (node.nodeName !== "t" || node.hasAttribute("t-tag")) {
       let nodeHooks = {};
       let addNodeHook = function (hook, handler) {
         nodeHooks[hook] = nodeHooks[hook] || [];
         nodeHooks[hook].push(handler);
       };
+      if (node.tagName === "select" && node.hasAttribute("t-att-value")) {
+        const value = node.getAttribute("t-att-value");
+        let exprId = ctx.generateID();
+        ctx.addLine(`let expr${exprId} = ${ctx.formatExpression(value)};`);
+        let expr = `expr${exprId}`;
+        node.setAttribute("t-att-value", expr);
+        addNodeHook("create", `n.elm.value=${expr};`);
+      }
+      let nodeID = this._compileGenericNode(node, ctx, withHandlers);
+      ctx = ctx.withParent(nodeID);
 
       for (let { directive, value, fullName } of validDirectives) {
         if (directive.atNodeCreation) {
@@ -703,16 +732,18 @@ export class QWeb extends EventBus {
           isProp = key === "selected" || key === "disabled";
           break;
         case "textarea":
-          isProp = key === "readonly" || key === "disabled";
+          isProp = key === "readonly" || key === "disabled" || key === "value";
+          break;
+        case "select":
+          isProp = key === "disabled" || key === "value";
           break;
         case "button":
-        case "select":
         case "optgroup":
           isProp = key === "disabled";
           break;
       }
       if (isProp) {
-        props.push(`${key}: _${val}`);
+        props.push(`${key}: ${val}`);
       }
     }
     let classObj = "";
@@ -748,7 +779,7 @@ export class QWeb extends EventBus {
             name = '"' + name + '"';
           }
           attrs.push(`${name}: _${attID}`);
-          handleProperties(name, attID);
+          handleProperties(name, `_${attID}`);
         }
       }
 
@@ -760,7 +791,7 @@ export class QWeb extends EventBus {
 
         if (attName === "class") {
           ctx.rootContext.shouldDefineUtils = true;
-          formattedValue = `utils.toObj(${formattedValue})`;
+          formattedValue = `utils.toClassObj(${formattedValue})`;
           if (classObj) {
             ctx.addLine(`Object.assign(${classObj}, ${formattedValue})`);
           } else {
@@ -783,9 +814,14 @@ export class QWeb extends EventBus {
             const attrIndex = attrs.findIndex((att) => att.startsWith(attName + ":"));
             attrs.splice(attrIndex, 1);
           }
-          ctx.addLine(`let _${attID} = ${formattedValue};`);
-          attrs.push(`${attName}: _${attID}`);
-          handleProperties(attName, attID);
+          if (node.nodeName === "select" && attName === "value") {
+            attrs.push(`${attName}: ${v}`);
+            handleProperties(attName, v);
+          } else {
+            ctx.addLine(`let _${attID} = ${formattedValue};`);
+            attrs.push(`${attName}: _${attID}`);
+            handleProperties(attName, "_" + attID);
+          }
         }
       }
 
@@ -841,7 +877,14 @@ export class QWeb extends EventBus {
       ctx.addLine(`}`);
       ctx.closeIf();
     }
-    ctx.addLine(`let vn${nodeID} = h('${node.nodeName}', p${nodeID}, c${nodeID});`);
+    let nodeName = `'${node.nodeName}'`;
+    if ((<Element>node).hasAttribute("t-tag")) {
+      const tagExpr = (<Element>node).getAttribute("t-tag");
+      (<Element>node).removeAttribute("t-tag");
+      nodeName = `tag${ctx.generateID()}`;
+      ctx.addLine(`let ${nodeName} = ${ctx.formatExpression(tagExpr)};`);
+    }
+    ctx.addLine(`let vn${nodeID} = h(${nodeName}, p${nodeID}, c${nodeID});`);
     if (ctx.parentNode) {
       ctx.addLine(`c${ctx.parentNode}.push(vn${nodeID});`);
     } else if (ctx.loopNumber || ctx.hasKey0) {

src/router/router.ts

@@ -11,6 +11,7 @@ type NavigationGuard = (info: {
 export interface Route {
   name: string;
   path: string;
+  extractionRegExp: RegExp;
   component?: any;
   redirect?: Destination;
   params: string[];
@@ -54,6 +55,7 @@ export interface EnvWithRouter extends Env {
 }
 
 const paramRegexp = /\{\{(.*?)\}\}/;
+const globalParamRegexp = new RegExp(paramRegexp.source, "g");
 
 export class Router {
   currentRoute: Route | null = null;
@@ -87,6 +89,7 @@ export class Router {
         this.validateDestination(partialRoute.redirect);
       }
       partialRoute.params = partialRoute.path ? findParams(partialRoute.path) : [];
+      partialRoute.extractionRegExp = makeExtractionRegExp(partialRoute.path);
       this.routes[partialRoute.name] = partialRoute as Route;
       this.routeIds.push(partialRoute.name);
     }
@@ -122,7 +125,10 @@ export class Router {
     const initialParams = this.currentParams;
     const result = await this.matchAndApplyRules(path);
     if (result.type === "match") {
-      const finalPath = this.routeToPath(result.route, result.params);
+      let finalPath = this.routeToPath(result.route, result.params);
+      if (path.indexOf("?") > -1) {
+        finalPath += "?" + path.split("?")[1];
+      }
       const isPopStateEvent = ev && ev instanceof PopStateEvent;
       if (!isPopStateEvent) {
         this.setUrlFromPath(finalPath);
@@ -170,19 +176,14 @@ export class Router {
   }
 
   private routeToPath(route: Route, params: RouteParams): string {
-    const path = route.path;
-    const parts = path.split("/");
-    const l = parts.length;
-    for (let i = 0; i < l; i++) {
-      const part = parts[i];
-      const match = part.match(paramRegexp);
-      if (match) {
-        const key = match[1].split(".")[0];
-        parts[i] = <string>params[key];
-      }
-    }
     const prefix = this.mode === "hash" ? "#" : "";
-    return prefix + parts.join("/");
+    return (
+      prefix +
+      route.path.replace(globalParamRegexp, (match, param) => {
+        const [key] = param.split(".");
+        return <string>params[key];
+      })
+    );
   }
 
   private currentPath(): string {
@@ -241,43 +242,53 @@ export class Router {
     if (route.path === "*") {
       return {};
     }
+    if (path.indexOf("?") > -1) {
+      path = path.split("?")[0];
+    }
     if (path.startsWith("#")) {
       path = path.slice(1);
     }
-    const descrParts = route.path.split("/");
-    const targetParts = path.split("/");
-    const l = descrParts.length;
-    if (l !== targetParts.length) {
+    const paramsMatch = path.match(route.extractionRegExp);
+    if (!paramsMatch) {
       return false;
     }
     const result = {};
-    for (let i = 0; i < l; i++) {
-      const descr = descrParts[i];
-      let target: string | number = targetParts[i];
-      const match = descr.match(paramRegexp);
-      if (match) {
-        const [key, suffix] = match[1].split(".");
-        if (suffix === "number") {
-          target = parseInt(target, 10);
-        }
-        result[key] = target;
-      } else if (descr !== target) {
-        return false;
+    route.params.forEach((param, index) => {
+      const [key, suffix] = param.split(".");
+      const paramValue = paramsMatch[index + 1];
+      if (suffix === "number") {
+        return (result[key] = parseInt(paramValue, 10));
       }
-    }
+      return (result[key] = paramValue);
+    });
     return result;
   }
 }
 
 function findParams(str: string): string[] {
-  const globalParamRegexp = /\{\{(.*?)\}\}/g;
   const result: string[] = [];
   let m;
   do {
     m = globalParamRegexp.exec(str);
     if (m) {
-      result.push(m[1].split(".")[0]);
+      result.push(m[1]);
     }
   } while (m);
   return result;
 }
+
+function escapeRegExp(str: string) {
+  return str.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
+}
+
+function makeExtractionRegExp(path: string) {
+  // replace param strings with capture groups so that we can build a regex to match over the path
+  const extractionString = path
+    .split(paramRegexp)
+    .map((part, index) => {
+      return index % 2 ? "(.*)" : escapeRegExp(part);
+    })
+    .join("");
+  // Example: /home/{{param1}}/{{param2}} => ^\/home\/(.*)\/(.*)$
+  return new RegExp(`^${extractionString}$`);
+}

src/vdom/modules.ts

@@ -231,7 +231,8 @@ function updateClass(oldVnode: VNode, vnode: VNode): void {
   elm = vnode.elm as Element;
 
   for (name in oldClass) {
-    if (name && !klass[name]) {
+    if (name && !klass[name] && !Object.prototype.hasOwnProperty.call(klass, name)) {
+      // was `true` and now not provided
       elm.classList.remove(name);
     }
   }

tests/__snapshots__/animations.test.ts.snap

@@ -24,7 +24,7 @@ exports[`animations t-transition combined with component 1`] = `
         c1.push(pvnode);
     } else {
         let componentKey2 = \`Child\`;
-        let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['Child'];
+        let W2 = scope['Child'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
         if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
         w2 = new W2(parent, props2);
         const __patch2 = w2.__patch;
@@ -69,7 +69,7 @@ exports[`animations t-transition combined with t-component and t-if 1`] = `
             c1.push(pvnode);
         } else {
             let componentKey2 = \`Child\`;
-            let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['Child'];
+            let W2 = scope['Child'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
             if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
             w2 = new W2(parent, props2);
             const __patch2 = w2.__patch;
@@ -115,7 +115,7 @@ exports[`animations t-transition combined with t-component, remove and re-add be
             c1.push(pvnode);
         } else {
             let componentKey2 = \`Child\`;
-            let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['Child'];
+            let W2 = scope['Child'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
             if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
             w2 = new W2(parent, props2);
             const __patch2 = w2.__patch;

tests/component/__snapshots__/class_style.test.ts.snap

@@ -20,12 +20,12 @@ exports[`class and style attributes with t-component dynamic t-att-style is prop
         w2 = false;
     }
     if (w2) {
-        w2.__updateProps(props2, extra.fiber, undefined).then(()=>{if (w2.__owl__.isDestroyed) {return};w2.el.style=_4;});;
+        w2.__updateProps(props2, extra.fiber, undefined).then(()=>{if (w2.__owl__.status === 5) {return};w2.el.style=_4;});;
         let pvnode = w2.__owl__.pvnode;
         c1.push(pvnode);
     } else {
         let componentKey2 = \`child\`;
-        let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['child'];
+        let W2 = scope['child'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
         if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
         w2 = new W2(parent, props2);
         parent.__owl__.cmap['__3__'] = w2.__owl__.id;
@@ -67,7 +67,7 @@ exports[`class and style attributes with t-component t-att-class is properly add
         c1.push(pvnode);
     } else {
         let componentKey2 = \`Child\`;
-        let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['Child'];
+        let W2 = scope['Child'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
         if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
         w2 = new W2(parent, props2);
         parent.__owl__.cmap['__3__'] = w2.__owl__.id;
@@ -90,7 +90,7 @@ exports[`class and style attributes with t-component t-att-class is properly add
     let scope = Object.create(context);
     let h = this.h;
     let _7 = {'c':true};
-    Object.assign(_7, utils.toObj({d:scope['state'].d}))
+    Object.assign(_7, utils.toClassObj({d:scope['state'].d}))
     let c8 = [], p8 = {key:8,class:_7};
     let vn8 = h('span', p8, c8);
     return vn8;
@@ -112,7 +112,7 @@ exports[`class and style attributes with t-component t-att-class is properly add
     // Component 'Child'
     const ref4 = \`child\`;
     let _5 = {'a':true};
-    Object.assign(_5, utils.toObj(scope['state'].b?'b':''))
+    Object.assign(_5, utils.toClassObj(scope['state'].b?'b':''))
     let w2 = '__3__' in parent.__owl__.cmap ? parent.__owl__.children[parent.__owl__.cmap['__3__']] : false;
     let props2 = {};
     if (w2 && w2.__owl__.currentFiber && !w2.__owl__.vnode) {
@@ -125,7 +125,7 @@ exports[`class and style attributes with t-component t-att-class is properly add
         c1.push(pvnode);
     } else {
         let componentKey2 = \`Child\`;
-        let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['Child'];
+        let W2 = scope['Child'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
         if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
         w2 = new W2(parent, props2);
         parent.__owl__.cmap['__3__'] = w2.__owl__.id;
@@ -148,7 +148,7 @@ exports[`class and style attributes with t-component t-att-class is properly add
     let scope = Object.create(context);
     let h = this.h;
     let _7 = {'c':true};
-    Object.assign(_7, utils.toObj(scope['state'].d?'d':''))
+    Object.assign(_7, utils.toClassObj(scope['state'].d?'d':''))
     let c8 = [], p8 = {key:8,class:_7};
     let vn8 = h('span', p8, c8);
     return vn8;

tests/component/__snapshots__/component.test.ts.snap

@@ -24,7 +24,7 @@ exports[`basic widget properties can handle empty props 1`] = `
         c1.push(pvnode);
     } else {
         let componentKey2 = \`Child\`;
-        let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['Child'];
+        let W2 = scope['Child'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
         if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
         w2 = new W2(parent, props2);
         parent.__owl__.cmap['__3__'] = w2.__owl__.id;
@@ -97,7 +97,7 @@ exports[`basic widget properties reconciliation alg works for t-foreach in t-for
                 c1.push(pvnode);
             } else {
                 let componentKey10 = \`Child\`;
-                let W10 = context.constructor.components[componentKey10] || QWeb.components[componentKey10]|| scope['Child'];
+                let W10 = scope['Child'] || context.constructor.components[componentKey10] || QWeb.components[componentKey10];
                 if (!W10) {throw new Error('Cannot find the definition of component \\"' + componentKey10 + '\\"')}
                 w10 = new W10(parent, props10);
                 parent.__owl__.cmap[k11] = w10.__owl__.id;
@@ -145,7 +145,7 @@ exports[`basic widget properties same t-keys in two different places 1`] = `
             c2.push(pvnode);
         } else {
             let componentKey3 = \`Child\`;
-            let W3 = context.constructor.components[componentKey3] || QWeb.components[componentKey3]|| scope['Child'];
+            let W3 = scope['Child'] || context.constructor.components[componentKey3] || QWeb.components[componentKey3];
             if (!W3) {throw new Error('Cannot find the definition of component \\"' + componentKey3 + '\\"')}
             w3 = new W3(parent, props3);
             parent.__owl__.cmap[k4] = w3.__owl__.id;
@@ -175,7 +175,7 @@ exports[`basic widget properties same t-keys in two different places 1`] = `
             c5.push(pvnode);
         } else {
             let componentKey6 = \`Child\`;
-            let W6 = context.constructor.components[componentKey6] || QWeb.components[componentKey6]|| scope['Child'];
+            let W6 = scope['Child'] || context.constructor.components[componentKey6] || QWeb.components[componentKey6];
             if (!W6) {throw new Error('Cannot find the definition of component \\"' + componentKey6 + '\\"')}
             w6 = new W6(parent, props6);
             parent.__owl__.cmap[k7] = w6.__owl__.id;
@@ -218,7 +218,7 @@ exports[`basic widget properties t-key on a component with t-if, and a sibling c
                 c1.push(pvnode);
             } else {
                 let componentKey2 = \`Child\`;
-                let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['Child'];
+                let W2 = scope['Child'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
                 if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
                 w2 = new W2(parent, props2);
                 parent.__owl__.cmap[k3] = w2.__owl__.id;
@@ -243,7 +243,7 @@ exports[`basic widget properties t-key on a component with t-if, and a sibling c
         c1.push(pvnode);
     } else {
         let componentKey4 = \`Child\`;
-        let W4 = context.constructor.components[componentKey4] || QWeb.components[componentKey4]|| scope['Child'];
+        let W4 = scope['Child'] || context.constructor.components[componentKey4] || QWeb.components[componentKey4];
         if (!W4) {throw new Error('Cannot find the definition of component \\"' + componentKey4 + '\\"')}
         w4 = new W4(parent, props4);
         parent.__owl__.cmap['__5__'] = w4.__owl__.id;
@@ -257,6 +257,45 @@ exports[`basic widget properties t-key on a component with t-if, and a sibling c
 }"
 `;
 
+exports[`composition can switch between dynamic components without the need for a t-key 1`] = `
+"function anonymous(context, extra
+) {
+    // Template name: \\"__template__3\\"
+    let utils = this.constructor.utils;
+    let QWeb = this.constructor;
+    let parent = context;
+    let scope = Object.create(context);
+    let h = this.h;
+    let c1 = [], p1 = {key:1};
+    let vn1 = h('div', p1, c1);
+    // Component '{{state.child}}'
+    let componentKey2 = (scope['state'].child);
+    let k3 = '___' + componentKey2
+    let w2 = k3 in parent.__owl__.cmap ? parent.__owl__.children[parent.__owl__.cmap[k3]] : false;
+    let props2 = {};
+    if (w2 && w2.__owl__.currentFiber && !w2.__owl__.vnode) {
+        w2.destroy();
+        w2 = false;
+    }
+    if (w2) {
+        w2.__updateProps(props2, extra.fiber, undefined);
+        let pvnode = w2.__owl__.pvnode;
+        c1.push(pvnode);
+    } else {
+        let W2 = false || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
+        if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
+        w2 = new W2(parent, props2);
+        parent.__owl__.cmap[k3] = w2.__owl__.id;
+        let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
+        let pvnode = h('dummy', {key: k3, hook: {remove() {},destroy(vn) {w2.destroy();}}});
+        c1.push(pvnode);
+        w2.__owl__.pvnode = pvnode;
+    }
+    w2.__owl__.parentLastFiberId = extra.fiber.id;
+    return vn1;
+}"
+`;
+
 exports[`composition sub components with some state rendered in a loop 1`] = `
 "function anonymous(context, extra
 ) {
@@ -301,7 +340,7 @@ exports[`composition sub components with some state rendered in a loop 1`] = `
                 c1.push(pvnode);
             } else {
                 let componentKey6 = \`ChildWidget\`;
-                let W6 = context.constructor.components[componentKey6] || QWeb.components[componentKey6]|| scope['ChildWidget'];
+                let W6 = scope['ChildWidget'] || context.constructor.components[componentKey6] || QWeb.components[componentKey6];
                 if (!W6) {throw new Error('Cannot find the definition of component \\"' + componentKey6 + '\\"')}
                 w6 = new W6(parent, props6);
                 parent.__owl__.cmap[k7] = w6.__owl__.id;
@@ -330,7 +369,9 @@ exports[`composition t-component with dynamic value 1`] = `
     let c1 = [], p1 = {key:1};
     let vn1 = h('div', p1, c1);
     // Component '{{state.widget}}'
-    let w2 = '__3__' in parent.__owl__.cmap ? parent.__owl__.children[parent.__owl__.cmap['__3__']] : false;
+    let componentKey2 = (scope['state'].widget);
+    let k3 = '___' + componentKey2
+    let w2 = k3 in parent.__owl__.cmap ? parent.__owl__.children[parent.__owl__.cmap[k3]] : false;
     let props2 = {};
     if (w2 && w2.__owl__.currentFiber && !w2.__owl__.vnode) {
         w2.destroy();
@@ -341,13 +382,12 @@ exports[`composition t-component with dynamic value 1`] = `
         let pvnode = w2.__owl__.pvnode;
         c1.push(pvnode);
     } else {
-        let componentKey2 = (scope['state'].widget);
-        let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2];
+        let W2 = false || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
         if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
         w2 = new W2(parent, props2);
-        parent.__owl__.cmap['__3__'] = w2.__owl__.id;
+        parent.__owl__.cmap[k3] = w2.__owl__.id;
         let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
-        let pvnode = h('dummy', {key: '__3__', hook: {remove() {},destroy(vn) {w2.destroy();}}});
+        let pvnode = h('dummy', {key: k3, hook: {remove() {},destroy(vn) {w2.destroy();}}});
         c1.push(pvnode);
         w2.__owl__.pvnode = pvnode;
     }
@@ -368,7 +408,9 @@ exports[`composition t-component with dynamic value 2 1`] = `
     let c1 = [], p1 = {key:1};
     let vn1 = h('div', p1, c1);
     // Component 'Widget{{state.widget}}'
-    let w2 = '__3__' in parent.__owl__.cmap ? parent.__owl__.children[parent.__owl__.cmap['__3__']] : false;
+    let componentKey2 = \`Widget\${scope['state'].widget}\`;
+    let k3 = '___' + componentKey2
+    let w2 = k3 in parent.__owl__.cmap ? parent.__owl__.children[parent.__owl__.cmap[k3]] : false;
     let props2 = {};
     if (w2 && w2.__owl__.currentFiber && !w2.__owl__.vnode) {
         w2.destroy();
@@ -379,13 +421,12 @@ exports[`composition t-component with dynamic value 2 1`] = `
         let pvnode = w2.__owl__.pvnode;
         c1.push(pvnode);
     } else {
-        let componentKey2 = \`Widget\${scope['state'].widget}\`;
-        let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2];
+        let W2 = false || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
         if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
         w2 = new W2(parent, props2);
-        parent.__owl__.cmap['__3__'] = w2.__owl__.id;
+        parent.__owl__.cmap[k3] = w2.__owl__.id;
         let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
-        let pvnode = h('dummy', {key: '__3__', hook: {remove() {},destroy(vn) {w2.destroy();}}});
+        let pvnode = h('dummy', {key: k3, hook: {remove() {},destroy(vn) {w2.destroy();}}});
         c1.push(pvnode);
         w2.__owl__.pvnode = pvnode;
     }
@@ -440,11 +481,11 @@ exports[`composition t-ref on a node, and t-on-click 2`] = `
         c1.push(pvnode);
     } else {
         let componentKey2 = \`Child\`;
-        let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['Child'];
+        let W2 = scope['Child'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
         if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
         w2 = new W2(parent, props2);
         parent.__owl__.cmap['__3__'] = w2.__owl__.id;
-        let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('click', function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['doSomething'](e);});}});});
+        let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('click', function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['doSomething'](e);});}});});
         let pvnode = h('dummy', {key: '__3__', hook: {remove() {},destroy(vn) {w2.destroy();}}});
         c1.push(pvnode);
         w2.__owl__.pvnode = pvnode;
@@ -467,7 +508,7 @@ exports[`dynamic t-props basic use 1`] = `
     let vn1 = h('div', p1, c1);
     // Component 'Child'
     let w2 = '__3__' in parent.__owl__.cmap ? parent.__owl__.children[parent.__owl__.cmap['__3__']] : false;
-    let props2 = Object.assign({}, scope['some'].obj);
+    let props2 = Object.assign({}, scope['some'].obj, {});
     if (w2 && w2.__owl__.currentFiber && !w2.__owl__.vnode) {
         w2.destroy();
         w2 = false;
@@ -478,7 +519,7 @@ exports[`dynamic t-props basic use 1`] = `
         c1.push(pvnode);
     } else {
         let componentKey2 = \`Child\`;
-        let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['Child'];
+        let W2 = scope['Child'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
         if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
         w2 = new W2(parent, props2);
         parent.__owl__.cmap['__3__'] = w2.__owl__.id;
@@ -518,17 +559,17 @@ exports[`other directives with t-component slot setted value (with t-set) not ac
         w3 = false;
     }
     if (w3) {
-        w3.__updateProps(props3, extra.fiber, Object.assign(Object.create(context), scope));
+        w3.__updateProps(props3, extra.fiber, utils.combine(context, scope));
         let pvnode = w3.__owl__.pvnode;
         c1.push(pvnode);
     } else {
         let componentKey3 = \`ChildWidget\`;
-        let W3 = context.constructor.components[componentKey3] || QWeb.components[componentKey3]|| scope['ChildWidget'];
+        let W3 = scope['ChildWidget'] || context.constructor.components[componentKey3] || QWeb.components[componentKey3];
         if (!W3) {throw new Error('Cannot find the definition of component \\"' + componentKey3 + '\\"')}
         w3 = new W3(parent, props3);
         parent.__owl__.cmap['__4__'] = w3.__owl__.id;
         w3.__owl__.slotId = 1;
-        let fiber = w3.__prepare(extra.fiber, Object.assign(Object.create(context), scope), () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
+        let fiber = w3.__prepare(extra.fiber, utils.combine(context, scope), () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
         let pvnode = h('dummy', {key: '__4__', hook: {remove() {},destroy(vn) {w3.destroy();}}});
         c1.push(pvnode);
         w3.__owl__.pvnode = pvnode;
@@ -579,7 +620,7 @@ exports[`other directives with t-component t-on expression captured in t-foreach
         c6.push(vn7);
         const otherState_8 = scope['otherState'];
         const iter_8 = scope.iter;
-        p7.on['click'] = function (e) {if (!context.__owl__.isMounted){return}otherState_8.vals.push(iter_8+'_'+iter_8)};
+        p7.on['click'] = function (e) {if (context.__owl__.status === 5){return}const res = (() => { return otherState_8.vals.push(iter_8+'_'+iter_8) })(); if (typeof res === 'function') { res(e) }};
         c7.push({text: \`expr\`});
         utils.getScope(scope, 'iter').iter = scope.iter+1;
     }
@@ -630,7 +671,7 @@ exports[`other directives with t-component t-on expression in t-foreach 1`] = `
         c6.push(vn9);
         const otherState_10 = scope['otherState'];
         const val_10 = scope['val'];
-        p9.on['click'] = function (e) {if (!context.__owl__.isMounted){return}otherState_10.vals.push(val_10)};
+        p9.on['click'] = function (e) {if (context.__owl__.status === 5){return}const res = (() => { return otherState_10.vals.push(val_10) })(); if (typeof res === 'function') { res(e) }};
         c9.push({text: \`Expr\`});
     }
     scope = _origScope5;
@@ -684,7 +725,7 @@ exports[`other directives with t-component t-on expression in t-foreach with t-s
         const otherState_10 = scope['otherState'];
         const val_10 = scope['val'];
         const bossa_10 = scope.bossa;
-        p9.on['click'] = function (e) {if (!context.__owl__.isMounted){return}otherState_10.vals.push(val_10+'_'+bossa_10)};
+        p9.on['click'] = function (e) {if (context.__owl__.status === 5){return}const res = (() => { return otherState_10.vals.push(val_10+'_'+bossa_10) })(); if (typeof res === 'function') { res(e) }};
         c9.push({text: \`Expr\`});
     }
     scope = _origScope5;
@@ -734,7 +775,7 @@ exports[`other directives with t-component t-on method call in t-foreach 1`] = `
         let vn9 = h('button', p9, c9);
         c6.push(vn9);
         let args10 = [scope['val']];
-        p9.on['click'] = function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['addVal'](...args10, e);};
+        p9.on['click'] = function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['addVal'](...args10, e);};
         c9.push({text: \`meth call\`});
     }
     scope = _origScope5;
@@ -766,11 +807,11 @@ exports[`other directives with t-component t-on with .capture modifier 1`] = `
         c1.push(pvnode);
     } else {
         let componentKey2 = \`Child\`;
-        let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['Child'];
+        let W2 = scope['Child'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
         if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
         w2 = new W2(parent, props2);
         parent.__owl__.cmap['__3__'] = w2.__owl__.id;
-        let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('click', function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['capture'](e);}, true);}});});
+        let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('click', function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['capture'](e);}, true);}});});
         let pvnode = h('dummy', {key: '__3__', hook: {remove() {},destroy(vn) {w2.destroy();}}});
         c1.push(pvnode);
         w2.__owl__.pvnode = pvnode;
@@ -808,11 +849,11 @@ exports[`other directives with t-component t-on with getter as handler 1`] = `
         c1.push(pvnode);
     } else {
         let componentKey3 = \`Child\`;
-        let W3 = context.constructor.components[componentKey3] || QWeb.components[componentKey3]|| scope['Child'];
+        let W3 = scope['Child'] || context.constructor.components[componentKey3] || QWeb.components[componentKey3];
         if (!W3) {throw new Error('Cannot find the definition of component \\"' + componentKey3 + '\\"')}
         w3 = new W3(parent, props3);
         parent.__owl__.cmap['__4__'] = w3.__owl__.id;
-        let fiber = w3.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('ev', function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['handler'](e);});}});});
+        let fiber = w3.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('ev', function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['handler'](e);});}});});
         let pvnode = h('dummy', {key: '__4__', hook: {remove() {},destroy(vn) {w3.destroy();}}});
         c1.push(pvnode);
         w3.__owl__.pvnode = pvnode;
@@ -847,11 +888,11 @@ exports[`other directives with t-component t-on with handler bound to argument 1
         c1.push(pvnode);
     } else {
         let componentKey2 = \`child\`;
-        let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['child'];
+        let W2 = scope['child'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
         if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
         w2 = new W2(parent, props2);
         parent.__owl__.cmap['__3__'] = w2.__owl__.id;
-        let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('ev', function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['onEv'](...args4, e);});}});});
+        let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('ev', function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['onEv'](...args4, e);});}});});
         let pvnode = h('dummy', {key: '__3__', hook: {remove() {},destroy(vn) {w2.destroy();}}});
         c1.push(pvnode);
         w2.__owl__.pvnode = pvnode;
@@ -886,11 +927,11 @@ exports[`other directives with t-component t-on with handler bound to empty obje
         c1.push(pvnode);
     } else {
         let componentKey2 = \`child\`;
-        let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['child'];
+        let W2 = scope['child'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
         if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
         w2 = new W2(parent, props2);
         parent.__owl__.cmap['__3__'] = w2.__owl__.id;
-        let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('ev', function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['onEv'](...args4, e);});}});});
+        let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('ev', function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['onEv'](...args4, e);});}});});
         let pvnode = h('dummy', {key: '__3__', hook: {remove() {},destroy(vn) {w2.destroy();}}});
         c1.push(pvnode);
         w2.__owl__.pvnode = pvnode;
@@ -925,11 +966,11 @@ exports[`other directives with t-component t-on with handler bound to empty obje
         c1.push(pvnode);
     } else {
         let componentKey2 = \`child\`;
-        let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['child'];
+        let W2 = scope['child'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
         if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
         w2 = new W2(parent, props2);
         parent.__owl__.cmap['__3__'] = w2.__owl__.id;
-        let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('ev', function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['onEv'](...args4, e);});}});});
+        let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('ev', function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['onEv'](...args4, e);});}});});
         let pvnode = h('dummy', {key: '__3__', hook: {remove() {},destroy(vn) {w2.destroy();}}});
         c1.push(pvnode);
         w2.__owl__.pvnode = pvnode;
@@ -964,11 +1005,11 @@ exports[`other directives with t-component t-on with handler bound to object 1`]
         c1.push(pvnode);
     } else {
         let componentKey2 = \`child\`;
-        let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['child'];
+        let W2 = scope['child'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
         if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
         w2 = new W2(parent, props2);
         parent.__owl__.cmap['__3__'] = w2.__owl__.id;
-        let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('ev', function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['onEv'](...args4, e);});}});});
+        let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('ev', function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['onEv'](...args4, e);});}});});
         let pvnode = h('dummy', {key: '__3__', hook: {remove() {},destroy(vn) {w2.destroy();}}});
         c1.push(pvnode);
         w2.__owl__.pvnode = pvnode;
@@ -1007,11 +1048,11 @@ exports[`other directives with t-component t-on with inline statement 1`] = `
         c1.push(pvnode);
     } else {
         let componentKey3 = \`Child\`;
-        let W3 = context.constructor.components[componentKey3] || QWeb.components[componentKey3]|| scope['Child'];
+        let W3 = scope['Child'] || context.constructor.components[componentKey3] || QWeb.components[componentKey3];
         if (!W3) {throw new Error('Cannot find the definition of component \\"' + componentKey3 + '\\"')}
         w3 = new W3(parent, props3);
         parent.__owl__.cmap['__4__'] = w3.__owl__.id;
-        let fiber = w3.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('ev', function (e) {if (!context.__owl__.isMounted){return}state_5.counter++});}});});
+        let fiber = w3.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('ev', function (e) {if (context.__owl__.status === 5){return}const res = (() => { return state_5.counter++ })(); if (typeof res === 'function') { res(e) }});}});});
         let pvnode = h('dummy', {key: '__4__', hook: {remove() {},destroy(vn) {w3.destroy();}}});
         c1.push(pvnode);
         w3.__owl__.pvnode = pvnode;
@@ -1045,11 +1086,11 @@ exports[`other directives with t-component t-on with no handler (only modifiers)
         c1.push(pvnode);
     } else {
         let componentKey2 = \`ComponentA\`;
-        let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['ComponentA'];
+        let W2 = scope['ComponentA'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
         if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
         w2 = new W2(parent, props2);
         parent.__owl__.cmap['__3__'] = w2.__owl__.id;
-        let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('ev', function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['onEv'](e);});}});});
+        let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('ev', function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['onEv'](e);});}});});
         let pvnode = h('dummy', {key: '__3__', hook: {remove() {},destroy(vn) {w2.destroy();}}});
         c1.push(pvnode);
         w2.__owl__.pvnode = pvnode;
@@ -1083,11 +1124,11 @@ exports[`other directives with t-component t-on with prevent and self modifiers
         c1.push(pvnode);
     } else {
         let componentKey2 = \`Child\`;
-        let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['Child'];
+        let W2 = scope['Child'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
         if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
         w2 = new W2(parent, props2);
         parent.__owl__.cmap['__3__'] = w2.__owl__.id;
-        let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('ev', function (e) {if (!context.__owl__.isMounted){return}e.preventDefault();if (e.target !== vn.elm) {return}utils.getComponent(context)['onEv'](e);});}});});
+        let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('ev', function (e) {if (context.__owl__.status === 5){return}e.preventDefault();if (e.target !== vn.elm) {return}utils.getComponent(context)['onEv'](e);});}});});
         let pvnode = h('dummy', {key: '__3__', hook: {remove() {},destroy(vn) {w2.destroy();}}});
         c1.push(pvnode);
         w2.__owl__.pvnode = pvnode;
@@ -1121,11 +1162,11 @@ exports[`other directives with t-component t-on with self and prevent modifiers
         c1.push(pvnode);
     } else {
         let componentKey2 = \`child\`;
-        let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['child'];
+        let W2 = scope['child'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
         if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
         w2 = new W2(parent, props2);
         parent.__owl__.cmap['__3__'] = w2.__owl__.id;
-        let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('ev', function (e) {if (!context.__owl__.isMounted){return}if (e.target !== vn.elm) {return}e.preventDefault();utils.getComponent(context)['onEv'](e);});}});});
+        let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('ev', function (e) {if (context.__owl__.status === 5){return}if (e.target !== vn.elm) {return}e.preventDefault();utils.getComponent(context)['onEv'](e);});}});});
         let pvnode = h('dummy', {key: '__3__', hook: {remove() {},destroy(vn) {w2.destroy();}}});
         c1.push(pvnode);
         w2.__owl__.pvnode = pvnode;
@@ -1159,11 +1200,11 @@ exports[`other directives with t-component t-on with self modifier 1`] = `
         c1.push(pvnode);
     } else {
         let componentKey2 = \`child\`;
-        let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['child'];
+        let W2 = scope['child'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
         if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
         w2 = new W2(parent, props2);
         parent.__owl__.cmap['__3__'] = w2.__owl__.id;
-        let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('ev-1', function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['onEv1'](e);});vn.elm.addEventListener('ev-2', function (e) {if (!context.__owl__.isMounted){return}if (e.target !== vn.elm) {return}utils.getComponent(context)['onEv2'](e);});}});});
+        let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('ev-1', function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['onEv1'](e);});vn.elm.addEventListener('ev-2', function (e) {if (context.__owl__.status === 5){return}if (e.target !== vn.elm) {return}utils.getComponent(context)['onEv2'](e);});}});});
         let pvnode = h('dummy', {key: '__3__', hook: {remove() {},destroy(vn) {w2.destroy();}}});
         c1.push(pvnode);
         w2.__owl__.pvnode = pvnode;
@@ -1197,11 +1238,11 @@ exports[`other directives with t-component t-on with stop and/or prevent modifie
         c1.push(pvnode);
     } else {
         let componentKey2 = \`child\`;
-        let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['child'];
+        let W2 = scope['child'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
         if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
         w2 = new W2(parent, props2);
         parent.__owl__.cmap['__3__'] = w2.__owl__.id;
-        let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('ev-1', function (e) {if (!context.__owl__.isMounted){return}e.stopPropagation();utils.getComponent(context)['onEv1'](e);});vn.elm.addEventListener('ev-2', function (e) {if (!context.__owl__.isMounted){return}e.preventDefault();utils.getComponent(context)['onEv2'](e);});vn.elm.addEventListener('ev-3', function (e) {if (!context.__owl__.isMounted){return}e.stopPropagation();e.preventDefault();utils.getComponent(context)['onEv3'](e);});}});});
+        let fiber = w2.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('ev-1', function (e) {if (context.__owl__.status === 5){return}e.stopPropagation();utils.getComponent(context)['onEv1'](e);});vn.elm.addEventListener('ev-2', function (e) {if (context.__owl__.status === 5){return}e.preventDefault();utils.getComponent(context)['onEv2'](e);});vn.elm.addEventListener('ev-3', function (e) {if (context.__owl__.status === 5){return}e.stopPropagation();e.preventDefault();utils.getComponent(context)['onEv3'](e);});}});});
         let pvnode = h('dummy', {key: '__3__', hook: {remove() {},destroy(vn) {w2.destroy();}}});
         c1.push(pvnode);
         w2.__owl__.pvnode = pvnode;
@@ -1337,7 +1378,7 @@ exports[`other directives with t-component t-set not altered by child widget 1`]
         c1.push(pvnode);
     } else {
         let componentKey3 = \`ChildWidget\`;
-        let W3 = context.constructor.components[componentKey3] || QWeb.components[componentKey3]|| scope['ChildWidget'];
+        let W3 = scope['ChildWidget'] || context.constructor.components[componentKey3] || QWeb.components[componentKey3];
         if (!W3) {throw new Error('Cannot find the definition of component \\"' + componentKey3 + '\\"')}
         w3 = new W3(parent, props3);
         parent.__owl__.cmap['__4__'] = w3.__owl__.id;
@@ -1432,7 +1473,7 @@ exports[`props evaluation  t-set with a body expression can be used as textual p
         c1.push(pvnode);
     } else {
         let componentKey3 = \`Child\`;
-        let W3 = context.constructor.components[componentKey3] || QWeb.components[componentKey3]|| scope['Child'];
+        let W3 = scope['Child'] || context.constructor.components[componentKey3] || QWeb.components[componentKey3];
         if (!W3) {throw new Error('Cannot find the definition of component \\"' + componentKey3 + '\\"')}
         w3 = new W3(parent, props3);
         parent.__owl__.cmap['__4__'] = w3.__owl__.id;
@@ -1491,7 +1532,7 @@ exports[`random stuff/miscellaneous snapshotting compiled code 1`] = `
             c1.push(pvnode);
         } else {
             let componentKey2 = \`child\`;
-            let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['child'];
+            let W2 = scope['child'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
             if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
             w2 = new W2(parent, props2);
             parent.__owl__.cmap[k3] = w2.__owl__.id;
@@ -1551,11 +1592,11 @@ exports[`random stuff/miscellaneous t-on with handler bound to dynamic argument
                 c1.push(pvnode);
             } else {
                 let componentKey6 = \`Child\`;
-                let W6 = context.constructor.components[componentKey6] || QWeb.components[componentKey6]|| scope['Child'];
+                let W6 = scope['Child'] || context.constructor.components[componentKey6] || QWeb.components[componentKey6];
                 if (!W6) {throw new Error('Cannot find the definition of component \\"' + componentKey6 + '\\"')}
                 w6 = new W6(parent, props6);
                 parent.__owl__.cmap[k7] = w6.__owl__.id;
-                let fiber = w6.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('ev', function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['onEv'](...args8, e);});}});});
+                let fiber = w6.__prepare(extra.fiber, undefined, () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; utils.assignHooks(vnode.data, {create(_, vn){vn.elm.addEventListener('ev', function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['onEv'](...args8, e);});}});});
                 let pvnode = h('dummy', {key: k7, hook: {remove() {},destroy(vn) {w6.destroy();}}});
                 c1.push(pvnode);
                 w6.__owl__.pvnode = pvnode;
@@ -1573,6 +1614,7 @@ exports[`t-call handlers are properly bound through a t-call 1`] = `
 ) {
     // Template name: \\"sub\\"
     let utils = this.constructor.utils;
+    let parent = extra.parent;
     let h = this.h;
     let c2 = extra.parentNode;
     let key0 = extra.key || \\"\\";
@@ -1580,7 +1622,7 @@ exports[`t-call handlers are properly bound through a t-call 1`] = `
     let vn3 = h('p', p3, c3);
     c2.push(vn3);
     let k4 = \`click__4__\${key0}__\`;
-    extra.handlers[k4] = extra.handlers[k4] || function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['update'](e);};
+    extra.handlers[k4] = extra.handlers[k4] || function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['update'](e);};
     p3.on['click'] = extra.handlers[k4];
     c3.push({text: \`lucas\`});
 }"
@@ -1591,6 +1633,7 @@ exports[`t-call handlers with arguments are properly bound through a t-call 1`]
 ) {
     // Template name: \\"sub\\"
     let utils = this.constructor.utils;
+    let parent = extra.parent;
     let scope = Object.create(context);
     let h = this.h;
     let c2 = extra.parentNode;
@@ -1599,7 +1642,7 @@ exports[`t-call handlers with arguments are properly bound through a t-call 1`]
     let vn3 = h('p', p3, c3);
     c2.push(vn3);
     let args4 = [scope['a']];
-    p3.on['click'] = function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['update'](...args4, e);};
+    p3.on['click'] = function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['update'](...args4, e);};
     c3.push({text: \`lucas\`});
 }"
 `;
@@ -1629,7 +1672,7 @@ exports[`t-call parent is set within t-call 1`] = `
         c2.push(pvnode);
     } else {
         let componentKey3 = \`Child\`;
-        let W3 = context.constructor.components[componentKey3] || QWeb.components[componentKey3]|| scope['Child'];
+        let W3 = scope['Child'] || context.constructor.components[componentKey3] || QWeb.components[componentKey3];
         if (!W3) {throw new Error('Cannot find the definition of component \\"' + componentKey3 + '\\"')}
         w3 = new W3(parent, props3);
         parent.__owl__.cmap[k4] = w3.__owl__.id;
@@ -1667,7 +1710,7 @@ exports[`t-call parent is set within t-call with no parentNode 1`] = `
         c1.push(pvnode);
     } else {
         let componentKey2 = \`Child\`;
-        let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['Child'];
+        let W2 = scope['Child'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
         if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
         w2 = new W2(parent, props2);
         parent.__owl__.cmap[k3] = w2.__owl__.id;
@@ -2062,7 +2105,7 @@ exports[`top level sub widgets basic use 1`] = `
         utils.defineProxy(vn3, pvnode);
     } else {
         let componentKey1 = \`Child\`;
-        let W1 = context.constructor.components[componentKey1] || QWeb.components[componentKey1]|| scope['Child'];
+        let W1 = scope['Child'] || context.constructor.components[componentKey1] || QWeb.components[componentKey1];
         if (!W1) {throw new Error('Cannot find the definition of component \\"' + componentKey1 + '\\"')}
         w1 = new W1(parent, props1);
         parent.__owl__.cmap['__2__'] = w1.__owl__.id;
@@ -2102,7 +2145,7 @@ exports[`top level sub widgets can select a sub widget  1`] = `
             utils.defineProxy(vn3, pvnode);
         } else {
             let componentKey1 = \`Child\`;
-            let W1 = context.constructor.components[componentKey1] || QWeb.components[componentKey1]|| scope['Child'];
+            let W1 = scope['Child'] || context.constructor.components[componentKey1] || QWeb.components[componentKey1];
             if (!W1) {throw new Error('Cannot find the definition of component \\"' + componentKey1 + '\\"')}
             w1 = new W1(parent, props1);
             parent.__owl__.cmap['__2__'] = w1.__owl__.id;
@@ -2129,7 +2172,7 @@ exports[`top level sub widgets can select a sub widget  1`] = `
             utils.defineProxy(vn6, pvnode);
         } else {
             let componentKey4 = \`OtherChild\`;
-            let W4 = context.constructor.components[componentKey4] || QWeb.components[componentKey4]|| scope['OtherChild'];
+            let W4 = scope['OtherChild'] || context.constructor.components[componentKey4] || QWeb.components[componentKey4];
             if (!W4) {throw new Error('Cannot find the definition of component \\"' + componentKey4 + '\\"')}
             w4 = new W4(parent, props4);
             parent.__owl__.cmap['__5__'] = w4.__owl__.id;

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

@@ -24,7 +24,7 @@ exports[`props validation props are validated in dev mode (code snapshot) 1`] =
         c1.push(pvnode);
     } else {
         let componentKey2 = \`Child\`;
-        let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['Child'];
+        let W2 = scope['Child'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
         if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
         w2 = new W2(parent, props2);
         parent.__owl__.cmap['__3__'] = w2.__owl__.id;

tests/component/__snapshots__/slots.test.ts.snap

@@ -19,17 +19,17 @@ exports[`t-slot directive can define and call slots 1`] = `
         w2 = false;
     }
     if (w2) {
-        w2.__updateProps(props2, extra.fiber, Object.assign(Object.create(context), scope));
+        w2.__updateProps(props2, extra.fiber, utils.combine(context, scope));
         let pvnode = w2.__owl__.pvnode;
         c1.push(pvnode);
     } else {
         let componentKey2 = \`Dialog\`;
-        let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['Dialog'];
+        let W2 = scope['Dialog'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
         if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
         w2 = new W2(parent, props2);
         parent.__owl__.cmap['__3__'] = w2.__owl__.id;
         w2.__owl__.slotId = 1;
-        let fiber = w2.__prepare(extra.fiber, Object.assign(Object.create(context), scope), () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
+        let fiber = w2.__prepare(extra.fiber, utils.combine(context, scope), () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
         let pvnode = h('dummy', {key: '__3__', hook: {remove() {},destroy(vn) {w2.destroy();}}});
         c1.push(pvnode);
         w2.__owl__.pvnode = pvnode;
@@ -44,23 +44,23 @@ exports[`t-slot directive can define and call slots 2`] = `
 ) {
     // Template name: \\"Dialog\\"
     let h = this.h;
+    let c8 = [], p8 = {key:8};
+    let vn8 = h('div', p8, c8);
     let c9 = [], p9 = {key:9};
     let vn9 = h('div', p9, c9);
-    let c10 = [], p10 = {key:10};
-    let vn10 = h('div', p10, c10);
-    c9.push(vn10);
-    const slot11 = this.constructor.slots[context.__owl__.slotId + '_' + 'header'];
-    if (slot11) {
-        slot11.call(this, context.__owl__.scope, Object.assign({}, extra, {parentNode: c10, parent: extra.parent || context}));
+    c8.push(vn9);
+    const slot10 = this.constructor.slots[context.__owl__.slotId + '_' + 'header'];
+    if (slot10) {
+        slot10.call(this, context.__owl__.scope, Object.assign({}, extra, {parentNode: c9, parent: extra.parent || context}));
     }
-    let c12 = [], p12 = {key:12};
-    let vn12 = h('div', p12, c12);
-    c9.push(vn12);
-    const slot13 = this.constructor.slots[context.__owl__.slotId + '_' + 'footer'];
-    if (slot13) {
-        slot13.call(this, context.__owl__.scope, Object.assign({}, extra, {parentNode: c12, parent: extra.parent || context}));
+    let c11 = [], p11 = {key:11};
+    let vn11 = h('div', p11, c11);
+    c8.push(vn11);
+    const slot12 = this.constructor.slots[context.__owl__.slotId + '_' + 'footer'];
+    if (slot12) {
+        slot12.call(this, context.__owl__.scope, Object.assign({}, extra, {parentNode: c11, parent: extra.parent || context}));
     }
-    return vn9;
+    return vn8;
 }"
 `;
 
@@ -68,6 +68,7 @@ exports[`t-slot directive can define and call slots 3`] = `
 "function anonymous(context, extra
 ) {
     // Template name: \\"slot_header_template\\"
+    let parent = extra.parent;
     let h = this.h;
     let c4 = extra.parentNode;
     let c5 = [], p5 = {key:5};
@@ -81,6 +82,7 @@ exports[`t-slot directive can define and call slots 4`] = `
 "function anonymous(context, extra
 ) {
     // Template name: \\"slot_footer_template\\"
+    let parent = extra.parent;
     let h = this.h;
     let c6 = extra.parentNode;
     let c7 = [], p7 = {key:7};
@@ -109,17 +111,17 @@ exports[`t-slot directive can define and call slots using old t-set keyword 1`]
         w2 = false;
     }
     if (w2) {
-        w2.__updateProps(props2, extra.fiber, Object.assign(Object.create(context), scope));
+        w2.__updateProps(props2, extra.fiber, utils.combine(context, scope));
         let pvnode = w2.__owl__.pvnode;
         c1.push(pvnode);
     } else {
         let componentKey2 = \`Dialog\`;
-        let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['Dialog'];
+        let W2 = scope['Dialog'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
         if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
         w2 = new W2(parent, props2);
         parent.__owl__.cmap['__3__'] = w2.__owl__.id;
         w2.__owl__.slotId = 1;
-        let fiber = w2.__prepare(extra.fiber, Object.assign(Object.create(context), scope), () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
+        let fiber = w2.__prepare(extra.fiber, utils.combine(context, scope), () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
         let pvnode = h('dummy', {key: '__3__', hook: {remove() {},destroy(vn) {w2.destroy();}}});
         c1.push(pvnode);
         w2.__owl__.pvnode = pvnode;
@@ -134,23 +136,23 @@ exports[`t-slot directive can define and call slots using old t-set keyword 2`]
 ) {
     // Template name: \\"__template__1\\"
     let h = this.h;
+    let c8 = [], p8 = {key:8};
+    let vn8 = h('div', p8, c8);
     let c9 = [], p9 = {key:9};
     let vn9 = h('div', p9, c9);
-    let c10 = [], p10 = {key:10};
-    let vn10 = h('div', p10, c10);
-    c9.push(vn10);
-    const slot11 = this.constructor.slots[context.__owl__.slotId + '_' + 'header'];
-    if (slot11) {
-        slot11.call(this, context.__owl__.scope, Object.assign({}, extra, {parentNode: c10, parent: extra.parent || context}));
+    c8.push(vn9);
+    const slot10 = this.constructor.slots[context.__owl__.slotId + '_' + 'header'];
+    if (slot10) {
+        slot10.call(this, context.__owl__.scope, Object.assign({}, extra, {parentNode: c9, parent: extra.parent || context}));
     }
-    let c12 = [], p12 = {key:12};
-    let vn12 = h('div', p12, c12);
-    c9.push(vn12);
-    const slot13 = this.constructor.slots[context.__owl__.slotId + '_' + 'footer'];
-    if (slot13) {
-        slot13.call(this, context.__owl__.scope, Object.assign({}, extra, {parentNode: c12, parent: extra.parent || context}));
+    let c11 = [], p11 = {key:11};
+    let vn11 = h('div', p11, c11);
+    c8.push(vn11);
+    const slot12 = this.constructor.slots[context.__owl__.slotId + '_' + 'footer'];
+    if (slot12) {
+        slot12.call(this, context.__owl__.scope, Object.assign({}, extra, {parentNode: c11, parent: extra.parent || context}));
     }
-    return vn9;
+    return vn8;
 }"
 `;
 
@@ -158,6 +160,7 @@ exports[`t-slot directive can define and call slots using old t-set keyword 3`]
 "function anonymous(context, extra
 ) {
     // Template name: \\"slot_header_template\\"
+    let parent = extra.parent;
     let h = this.h;
     let c4 = extra.parentNode;
     let c5 = [], p5 = {key:5};
@@ -171,6 +174,7 @@ exports[`t-slot directive can define and call slots using old t-set keyword 4`]
 "function anonymous(context, extra
 ) {
     // Template name: \\"slot_footer_template\\"
+    let parent = extra.parent;
     let h = this.h;
     let c6 = extra.parentNode;
     let c7 = [], p7 = {key:7};
@@ -184,6 +188,7 @@ exports[`t-slot directive content is the default slot 1`] = `
 "function anonymous(context, extra
 ) {
     // Template name: \\"slot_default_template\\"
+    let parent = extra.parent;
     let h = this.h;
     let c4 = extra.parentNode;
     let c5 = [], p5 = {key:5};
@@ -210,10 +215,50 @@ exports[`t-slot directive dafault slots can define a default content 1`] = `
 }"
 `;
 
+exports[`t-slot directive default slot next to named slot, with default content 1`] = `
+"function anonymous(context, extra
+) {
+    // Template name: \\"__template__2\\"
+    let utils = this.constructor.utils;
+    let QWeb = this.constructor;
+    let parent = context;
+    let scope = Object.create(context);
+    let h = this.h;
+    let c1 = [], p1 = {key:1};
+    let vn1 = h('div', p1, c1);
+    // Component 'Dialog'
+    let w2 = '__3__' in parent.__owl__.cmap ? parent.__owl__.children[parent.__owl__.cmap['__3__']] : false;
+    let props2 = {};
+    if (w2 && w2.__owl__.currentFiber && !w2.__owl__.vnode) {
+        w2.destroy();
+        w2 = false;
+    }
+    if (w2) {
+        w2.__updateProps(props2, extra.fiber, utils.combine(context, scope));
+        let pvnode = w2.__owl__.pvnode;
+        c1.push(pvnode);
+    } else {
+        let componentKey2 = \`Dialog\`;
+        let W2 = scope['Dialog'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
+        if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
+        w2 = new W2(parent, props2);
+        parent.__owl__.cmap['__3__'] = w2.__owl__.id;
+        w2.__owl__.slotId = 1;
+        let fiber = w2.__prepare(extra.fiber, utils.combine(context, scope), () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
+        let pvnode = h('dummy', {key: '__3__', hook: {remove() {},destroy(vn) {w2.destroy();}}});
+        c1.push(pvnode);
+        w2.__owl__.pvnode = pvnode;
+    }
+    w2.__owl__.parentLastFiberId = extra.fiber.id;
+    return vn1;
+}"
+`;
+
 exports[`t-slot directive default slot work with text nodes 1`] = `
 "function anonymous(context, extra
 ) {
     // Template name: \\"slot_default_template\\"
+    let parent = extra.parent;
     let h = this.h;
     let c4 = extra.parentNode;
     c4.push({text: \`sts rocks\`});
@@ -227,15 +272,15 @@ exports[`t-slot directive dynamic t-slot call 1`] = `
     let utils = this.constructor.utils;
     let scope = Object.create(context);
     let h = this.h;
-    let c10 = [], p10 = {key:10,on:{}};
-    let vn10 = h('button', p10, c10);
-    extra.handlers['click__11__'] = extra.handlers['click__11__'] || function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['toggle'](e);};
-    p10.on['click'] = extra.handlers['click__11__'];
-    const slot12 = this.constructor.slots[context.__owl__.slotId + '_' + (scope['current'].slot)];
-    if (slot12) {
-        slot12.call(this, context.__owl__.scope, Object.assign({}, extra, {parentNode: c10, parent: extra.parent || context}));
+    let c9 = [], p9 = {key:9,on:{}};
+    let vn9 = h('button', p9, c9);
+    extra.handlers['click__10__'] = extra.handlers['click__10__'] || function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['toggle'](e);};
+    p9.on['click'] = extra.handlers['click__10__'];
+    const slot11 = this.constructor.slots[context.__owl__.slotId + '_' + (scope['current'].slot)];
+    if (slot11) {
+        slot11.call(this, context.__owl__.scope, Object.assign({}, extra, {parentNode: c9, parent: extra.parent || context}));
     }
-    return vn10;
+    return vn9;
 }"
 `;
 
@@ -243,6 +288,7 @@ exports[`t-slot directive multiple roots are allowed in a default slot 1`] = `
 "function anonymous(context, extra
 ) {
     // Template name: \\"slot_default_template\\"
+    let parent = extra.parent;
     let h = this.h;
     let c4 = extra.parentNode;
     let c5 = [], p5 = {key:5};
@@ -260,6 +306,7 @@ exports[`t-slot directive multiple roots are allowed in a named slot 1`] = `
 "function anonymous(context, extra
 ) {
     // Template name: \\"slot_content_template\\"
+    let parent = extra.parent;
     let h = this.h;
     let c4 = extra.parentNode;
     let c5 = [], p5 = {key:5};
@@ -295,13 +342,14 @@ exports[`t-slot directive refs are properly bound in slots 1`] = `
 ) {
     // Template name: \\"slot_footer_template\\"
     let utils = this.constructor.utils;
+    let parent = extra.parent;
     context.__owl__.refs = context.__owl__.refs || {};
     let h = this.h;
     let c8 = extra.parentNode;
     let c9 = [], p9 = {key:9,on:{}};
     let vn9 = h('button', p9, c9);
     c8.push(vn9);
-    extra.handlers['click__10__'] = extra.handlers['click__10__'] || function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['doSomething'](e);};
+    extra.handlers['click__10__'] = extra.handlers['click__10__'] || function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['doSomething'](e);};
     p9.on['click'] = extra.handlers['click__10__'];
     const ref11 = \`myButton\`;
     p9.hook = {
@@ -321,12 +369,13 @@ exports[`t-slot directive slots are rendered with proper context 1`] = `
 ) {
     // Template name: \\"slot_footer_template\\"
     let utils = this.constructor.utils;
+    let parent = extra.parent;
     let h = this.h;
     let c8 = extra.parentNode;
     let c9 = [], p9 = {key:9,on:{}};
     let vn9 = h('button', p9, c9);
     c8.push(vn9);
-    extra.handlers['click__10__'] = extra.handlers['click__10__'] || function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['doSomething'](e);};
+    extra.handlers['click__10__'] = extra.handlers['click__10__'] || function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['doSomething'](e);};
     p9.on['click'] = extra.handlers['click__10__'];
     c9.push({text: \`do something\`});
 }"
@@ -392,17 +441,17 @@ exports[`t-slot directive slots are rendered with proper context, part 2 2`] = `
             w8 = false;
         }
         if (w8) {
-            w8.__updateProps(props8, extra.fiber, Object.assign(Object.create(context), scope));
+            w8.__updateProps(props8, extra.fiber, utils.combine(context, scope));
             let pvnode = w8.__owl__.pvnode;
             c7.push(pvnode);
         } else {
             let componentKey8 = \`Link\`;
-            let W8 = context.constructor.components[componentKey8] || QWeb.components[componentKey8]|| scope['Link'];
+            let W8 = scope['Link'] || context.constructor.components[componentKey8] || QWeb.components[componentKey8];
             if (!W8) {throw new Error('Cannot find the definition of component \\"' + componentKey8 + '\\"')}
             w8 = new W8(parent, props8);
             parent.__owl__.cmap[k9] = w8.__owl__.id;
             w8.__owl__.slotId = 1;
-            let fiber = w8.__prepare(extra.fiber, Object.assign(Object.create(context), scope), () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
+            let fiber = w8.__prepare(extra.fiber, utils.combine(context, scope), () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
             let pvnode = h('dummy', {key: k9, hook: {remove() {},destroy(vn) {w8.destroy();}}});
             c7.push(pvnode);
             w8.__owl__.pvnode = pvnode;
@@ -418,6 +467,7 @@ exports[`t-slot directive slots are rendered with proper context, part 2 3`] = `
 "function anonymous(context, extra
 ) {
     // Template name: \\"slot_default_template\\"
+    let parent = extra.parent;
     let scope = Object.create(context);
     let h = this.h;
     let c10 = extra.parentNode;
@@ -490,17 +540,17 @@ exports[`t-slot directive slots are rendered with proper context, part 3 2`] = `
             w8 = false;
         }
         if (w8) {
-            w8.__updateProps(props8, extra.fiber, Object.assign(Object.create(context), scope));
+            w8.__updateProps(props8, extra.fiber, utils.combine(context, scope));
             let pvnode = w8.__owl__.pvnode;
             c7.push(pvnode);
         } else {
             let componentKey8 = \`Link\`;
-            let W8 = context.constructor.components[componentKey8] || QWeb.components[componentKey8]|| scope['Link'];
+            let W8 = scope['Link'] || context.constructor.components[componentKey8] || QWeb.components[componentKey8];
             if (!W8) {throw new Error('Cannot find the definition of component \\"' + componentKey8 + '\\"')}
             w8 = new W8(parent, props8);
             parent.__owl__.cmap[k9] = w8.__owl__.id;
             w8.__owl__.slotId = 1;
-            let fiber = w8.__prepare(extra.fiber, Object.assign(Object.create(context), scope), () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
+            let fiber = w8.__prepare(extra.fiber, utils.combine(context, scope), () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
             let pvnode = h('dummy', {key: k9, hook: {remove() {},destroy(vn) {w8.destroy();}}});
             c7.push(pvnode);
             w8.__owl__.pvnode = pvnode;
@@ -516,6 +566,7 @@ exports[`t-slot directive slots are rendered with proper context, part 3 3`] = `
 "function anonymous(context, extra
 ) {
     // Template name: \\"slot_default_template\\"
+    let parent = extra.parent;
     let scope = Object.create(context);
     let h = this.h;
     let c10 = extra.parentNode;
@@ -546,17 +597,17 @@ exports[`t-slot directive slots are rendered with proper context, part 4 1`] = `
         w2 = false;
     }
     if (w2) {
-        w2.__updateProps(props2, extra.fiber, Object.assign(Object.create(context), scope));
+        w2.__updateProps(props2, extra.fiber, utils.combine(context, scope));
         let pvnode = w2.__owl__.pvnode;
         c1.push(pvnode);
     } else {
         let componentKey2 = \`Link\`;
-        let W2 = context.constructor.components[componentKey2] || QWeb.components[componentKey2]|| scope['Link'];
+        let W2 = scope['Link'] || context.constructor.components[componentKey2] || QWeb.components[componentKey2];
         if (!W2) {throw new Error('Cannot find the definition of component \\"' + componentKey2 + '\\"')}
         w2 = new W2(parent, props2);
         parent.__owl__.cmap['__3__'] = w2.__owl__.id;
         w2.__owl__.slotId = 1;
-        let fiber = w2.__prepare(extra.fiber, Object.assign(Object.create(context), scope), () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
+        let fiber = w2.__prepare(extra.fiber, utils.combine(context, scope), () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
         let pvnode = h('dummy', {key: '__3__', hook: {remove() {},destroy(vn) {w2.destroy();}}});
         c1.push(pvnode);
         w2.__owl__.pvnode = pvnode;
@@ -570,6 +621,7 @@ exports[`t-slot directive slots are rendered with proper context, part 4 2`] = `
 "function anonymous(context, extra
 ) {
     // Template name: \\"slot_default_template\\"
+    let parent = extra.parent;
     let scope = Object.create(context);
     let h = this.h;
     let c4 = extra.parentNode;
@@ -580,6 +632,94 @@ exports[`t-slot directive slots are rendered with proper context, part 4 2`] = `
 }"
 `;
 
+exports[`t-slot directive slots in t-foreach in t-foreach 1`] = `
+"function anonymous(context, extra
+) {
+    // Template name: \\"__template__2\\"
+    let utils = this.constructor.utils;
+    let QWeb = this.constructor;
+    let parent = context;
+    let scope = Object.create(context);
+    let h = this.h;
+    let c1 = [], p1 = {key:1};
+    let vn1 = h('div', p1, c1);
+    let _2 = scope['tree'];
+    if (!_2) { throw new Error('QWeb error: Invalid loop expression')}
+    let _3 = _4 = _2;
+    if (!(_2 instanceof Array)) {
+        _3 = Object.keys(_2);
+        _4 = Object.values(_2);
+    }
+    let _length3 = _3.length;
+    let _origScope5 = scope;
+    scope = Object.create(scope);
+    for (let i1 = 0; i1 < _length3; i1++) {
+        scope.node1_first = i1 === 0
+        scope.node1_last = i1 === _length3 - 1
+        scope.node1_index = i1
+        scope.node1 = _3[i1]
+        scope.node1_value = _4[i1]
+        let key1 = scope['node1'].key;
+        let c6 = [], p6 = {key:\`\${key1}_6\`};
+        let vn6 = h('div', p6, c6);
+        c1.push(vn6);
+        let _7 = scope['node1'].value;
+        if (_7 != null) {
+            c6.push({text: _7});
+        }
+        let c8 = [], p8 = {key:\`\${key1}_8\`};
+        let vn8 = h('ul', p8, c8);
+        c1.push(vn8);
+        let _9 = scope['node1'].nodes;
+        if (!_9) { throw new Error('QWeb error: Invalid loop expression')}
+        let _10 = _11 = _9;
+        if (!(_9 instanceof Array)) {
+            _10 = Object.keys(_9);
+            _11 = Object.values(_9);
+        }
+        let _length10 = _10.length;
+        let _origScope12 = scope;
+        scope = Object.create(scope);
+        for (let i2 = 0; i2 < _length10; i2++) {
+            scope.node2_first = i2 === 0
+            scope.node2_last = i2 === _length10 - 1
+            scope.node2_index = i2
+            scope.node2 = _10[i2]
+            scope.node2_value = _11[i2]
+            let key2 = scope['node2'].key;
+            // Component 'Child'
+            let k14 = \`__14__\${key1}__\${key2}__\`;
+            let w13 = k14 in parent.__owl__.cmap ? parent.__owl__.children[parent.__owl__.cmap[k14]] : false;
+            let props13 = {};
+            if (w13 && w13.__owl__.currentFiber && !w13.__owl__.vnode) {
+                w13.destroy();
+                w13 = false;
+            }
+            if (w13) {
+                w13.__updateProps(props13, extra.fiber, utils.combine(context, scope));
+                let pvnode = w13.__owl__.pvnode;
+                c8.push(pvnode);
+            } else {
+                let componentKey13 = \`Child\`;
+                let W13 = scope['Child'] || context.constructor.components[componentKey13] || QWeb.components[componentKey13];
+                if (!W13) {throw new Error('Cannot find the definition of component \\"' + componentKey13 + '\\"')}
+                w13 = new W13(parent, props13);
+                parent.__owl__.cmap[k14] = w13.__owl__.id;
+                w13.__owl__.slotId = 1;
+                let fiber = w13.__prepare(extra.fiber, utils.combine(context, scope), () => { const vnode = fiber.vnode; pvnode.sel = vnode.sel; });
+                let pvnode = h('dummy', {key: k14, hook: {remove() {},destroy(vn) {w13.destroy();}}});
+                c8.push(pvnode);
+                w13.__owl__.pvnode = pvnode;
+            }
+            w13.__owl__.parentLastFiberId = extra.fiber.id;
+        }
+        scope = _origScope12;
+    }
+    scope = _origScope5;
+    return vn1;
+}"
+`;
+
 exports[`t-slot directive t-set t-value in a slot 1`] = `
 "function anonymous(context, extra
 ) {

tests/component/async.test.ts

@@ -1,4 +1,4 @@
-import { Component, Env } from "../../src/component/component";
+import { Component, Env, STATUS } from "../../src/component/component";
 import { useState } from "../../src/hooks";
 import { xml } from "../../src/tags";
 import { makeDeferred, makeTestEnv, makeTestFixture, nextMicroTick, nextTick } from "../helpers";
@@ -40,14 +40,14 @@ describe("async rendering", () => {
       }
     }
     const w = new W();
+    expect(w.__owl__.status).toBe(STATUS.CREATED);
     w.mount(fixture);
-    expect(w.__owl__.isDestroyed).toBe(false);
-    expect(w.__owl__.isMounted).toBe(false);
+    expect(w.__owl__.status).toBe(STATUS.WILLSTARTED);
     w.destroy();
+    expect(w.__owl__.status).toBe(STATUS.DESTROYED);
     def.resolve();
     await nextTick();
-    expect(w.__owl__.isDestroyed).toBe(true);
-    expect(w.__owl__.isMounted).toBe(false);
+    expect(w.__owl__.status).toBe(STATUS.DESTROYED);
   });
 
   test("destroying/recreating a subwidget with different props (if start is not over)", async () => {

tests/component/component.test.ts

@@ -1,4 +1,4 @@
-import { Component, Env, mount } from "../../src/component/component";
+import { Component, Env, mount, STATUS } from "../../src/component/component";
 import { EventBus } from "../../src/core/event_bus";
 import { useRef, useState } from "../../src/hooks";
 import { QWeb } from "../../src/qweb/qweb";
@@ -149,6 +149,24 @@ describe("basic widget properties", () => {
     expect(fixture.innerHTML).toBe("<div>1<button>Inc</button></div>");
   });
 
+  test("support for callable expression in event handler", async () => {
+    class Counter extends Component {
+      static template = xml`
+      <div><t t-esc="state.value"/><input type="text" t-on-input="obj.onInput"/></div>`;
+      state = useState({ value: "" });
+      obj = { onInput: (ev) => (this.state.value = ev.target.value) };
+    }
+
+    const counter = await mount(Counter, { target: fixture });
+    await nextTick();
+    expect(fixture.innerHTML).toBe(`<div><input type="text"></div>`);
+    const input = (<HTMLElement>counter.el).getElementsByTagName("input")[0];
+    input.value = "test";
+    input.dispatchEvent(new Event("input"));
+    await nextTick();
+    expect(fixture.innerHTML).toBe(`<div>test<input type="text"></div>`);
+  });
+
   test("can handle empty props", async () => {
     class Child extends Component {
       static template = xml`<span><t t-esc="props.val"/></span>`;
@@ -163,7 +181,7 @@ describe("basic widget properties", () => {
     expect(fixture.innerHTML).toBe("<div><span></span></div>");
   });
 
-  test("cannot be clicked on and updated if not in DOM", async () => {
+  test("can be clicked on and updated if not in DOM", async () => {
     class Counter extends Component {
       static template = xml`
       <div><t t-esc="state.counter"/><button t-on-click="state.counter++">Inc</button></div>`;
@@ -178,8 +196,8 @@ describe("basic widget properties", () => {
     const button = (<HTMLElement>counter.el).getElementsByTagName("button")[0];
     button.click();
     await nextTick();
-    expect(target.innerHTML).toBe("<div>0<button>Inc</button></div>");
-    expect(counter.state.counter).toBe(0);
+    expect(target.innerHTML).toBe("<div>1<button>Inc</button></div>");
+    expect(counter.state.counter).toBe(1);
   });
 
   test("widget style and classname", async () => {
@@ -661,9 +679,8 @@ describe("lifecycle hooks", () => {
 
     class ChildWidget extends Component {
       static template = xml`<div/>`;
-      constructor(parent) {
-        super(parent);
-        steps.push("init");
+      setup() {
+        steps.push("setup");
       }
       async willStart() {
         steps.push("willstart");
@@ -687,10 +704,10 @@ describe("lifecycle hooks", () => {
 
     const widget = new ParentWidget();
     await widget.mount(fixture);
-    expect(steps).toEqual(["init", "willstart", "mounted"]);
+    expect(steps).toEqual(["setup", "willstart", "mounted"]);
     widget.state.ok = false;
     await nextTick();
-    expect(steps).toEqual(["init", "willstart", "mounted", "willunmount"]);
+    expect(steps).toEqual(["setup", "willstart", "mounted", "willunmount"]);
   });
 
   test("components are unmounted and destroyed if no longer in DOM, even after updateprops", async () => {
@@ -738,8 +755,7 @@ describe("lifecycle hooks", () => {
 
     class ChildWidget extends Component {
       static template = xml`<div/>`;
-      constructor(parent) {
-        super(parent);
+      setup() {
         steps.push("c init");
       }
       async willStart() {
@@ -755,8 +771,7 @@ describe("lifecycle hooks", () => {
     class ParentWidget extends Component {
       static template = xml`<div><t t-component="child"/></div>`;
       static components = { child: ChildWidget };
-      constructor(parent?) {
-        super(parent);
+      setup() {
         steps.push("p init");
       }
       async willStart() {
@@ -962,6 +977,69 @@ describe("lifecycle hooks", () => {
       "parent:patched",
     ]);
   });
+
+  test("willPatch/patched hook is not called if not mounted in DOM", async () => {
+    const steps: string[] = [];
+
+    class ChildWidget extends Component {
+      static template = xml`<div/>`;
+      constructor(parent, props) {
+        super(parent, props);
+        steps.push("child:constructor");
+      }
+      mounted() {
+        steps.push("child:mounted");
+      }
+      willPatch() {
+        steps.push("child:willPatch");
+      }
+      patched() {
+        steps.push("child:patched");
+      }
+    }
+    class ParentWidget extends Component {
+      static template = xml`
+        <div>
+          <t t-component="child" v="state.n"/>
+        </div>
+      `;
+      static components = { child: ChildWidget };
+      state = useState({ n: 1 });
+      constructor() {
+        super();
+        steps.push("parent:constructor");
+      }
+      mounted() {
+        steps.push("parent:mounted");
+      }
+      willPatch() {
+        steps.push("parent:willPatch");
+      }
+      patched() {
+        steps.push("parent:patched");
+      }
+    }
+
+    const div = document.createElement("div");
+    const widget = new ParentWidget();
+    await widget.mount(div);
+    expect(steps).toEqual(["parent:constructor", "child:constructor"]);
+
+    widget.state.n = 2;
+    await nextTick();
+
+    expect(steps).toEqual(["parent:constructor", "child:constructor"]);
+
+    // then we remount the component in the dom
+    await widget.mount(fixture);
+
+    expect(steps).toEqual([
+      "parent:constructor",
+      "child:constructor",
+      "child:mounted",
+      "parent:mounted",
+    ]);
+  });
 });
 
 describe("destroy method", () => {
@@ -975,8 +1053,7 @@ describe("destroy method", () => {
     expect(document.contains(widget.el)).toBe(true);
     widget.destroy();
     expect(document.contains(widget.el)).toBe(false);
-    expect(widget.__owl__.isMounted).toBe(false);
-    expect(widget.__owl__.isDestroyed).toBe(true);
+    expect(widget.__owl__.status).toBe(STATUS.DESTROYED);
   });
 
   test("destroying a parent also destroys its children", async () => {
@@ -985,9 +1062,9 @@ describe("destroy method", () => {
 
     const child = children(parent)[0];
 
-    expect(child.__owl__.isDestroyed).toBe(false);
+    expect(child.__owl__.status).toBe(STATUS.MOUNTED);
     parent.destroy();
-    expect(child.__owl__.isDestroyed).toBe(true);
+    expect(child.__owl__.status).toBe(STATUS.DESTROYED);
   });
 
   test("destroy remove the parent/children link", async () => {
@@ -1013,17 +1090,15 @@ describe("destroy method", () => {
     }
     expect(fixture.innerHTML).toBe("");
     const widget = new DelayedWidget();
+    expect(widget.__owl__.status).toBe(STATUS.CREATED);
     widget.mount(fixture);
-    expect(widget.__owl__.isMounted).toBe(false);
-    expect(widget.__owl__.isDestroyed).toBe(false);
+    expect(widget.__owl__.status).toBe(STATUS.WILLSTARTED);
     widget.destroy();
-    expect(widget.__owl__.isMounted).toBe(false);
-    expect(widget.__owl__.isDestroyed).toBe(true);
+    expect(widget.__owl__.status).toBe(STATUS.DESTROYED);
     def.resolve();
     await nextTick();
 
-    expect(widget.__owl__.isMounted).toBe(false);
-    expect(widget.__owl__.isDestroyed).toBe(true);
+    expect(widget.__owl__.status).toBe(STATUS.DESTROYED);
     expect(widget.__owl__.vnode).toBe(undefined);
     expect(fixture.innerHTML).toBe("");
     expect(isRendered).toBe(false);
@@ -1171,6 +1246,30 @@ describe("composition", () => {
     expect(fixture.innerHTML).toBe("<div>child b</div>");
   });
 
+  test("can switch between dynamic components without the need for a t-key", async () => {
+    class A extends Component {
+      static template = xml`<span>child a</span>`;
+    }
+    class B extends Component {
+      static template = xml`<span>child b</span>`;
+    }
+    class App extends Component {
+      static template = xml`
+        <div>
+            <t t-component="{{state.child}}"/>
+        </div>`;
+      static components = { A, B };
+
+      state = useState({ child: "A" });
+    }
+    const app = await mount(App, { target: fixture });
+    expect(fixture.innerHTML).toBe("<div><span>child a</span></div>");
+    app.state.child = "B";
+    await nextTick();
+    expect(fixture.innerHTML).toBe("<div><span>child b</span></div>");
+    expect(QWeb.TEMPLATES[App.template].fn.toString()).toMatchSnapshot();
+  });
+
   test("don't fallback to global registry if widget defined locally", async () => {
     QWeb.registerComponent("WidgetB", WidgetB); // should not use this widget
     env.qweb.addTemplate("ParentWidget", `<div><t t-component="WidgetB"/></div>`);
@@ -1185,6 +1284,23 @@ describe("composition", () => {
     delete QWeb.components["WidgetB"];
   });
 
+  test("don't fallback to global/component's registry if widget defined in the instance's context", async () => {
+    QWeb.registerComponent("WidgetB", WidgetB); // should not use this widget
+    env.qweb.addTemplate("ParentWidget", `<div><t t-component="WidgetB"/></div>`);
+    env.qweb.addTemplate("ComponentWidgetB", `<span>Belgium</span>`); // should not use this widget either
+    env.qweb.addTemplate("InstanceWidgetB", `<span>Chocolate</span>`); // should use this
+    class ComponentWidgetB extends Component {}
+    class InstanceWidgetB extends Component {}
+    class ParentWidget extends Component {
+      static components = { WidgetB: ComponentWidgetB };
+      WidgetB = InstanceWidgetB;
+    }
+    const widget = new ParentWidget();
+    await widget.mount(fixture);
+    expect(fixture.innerHTML).toBe("<div><span>Chocolate</span></div>");
+    delete QWeb.components["WidgetB"];
+  });
+
   test("can define components in template without t-component", async () => {
     env.qweb.addTemplates(`
       <templates>
@@ -1479,7 +1595,7 @@ describe("composition", () => {
     parent.state.flag = true;
     await nextTick();
     expect(children(parent)[0]).toBe(child);
-    expect(child.__owl__.isDestroyed).toBe(false);
+    expect(child.__owl__.status).toBe(STATUS.MOUNTED);
     expect(normalize(fixture.innerHTML)).toBe(
       normalize(`
       <div>
@@ -2227,9 +2343,29 @@ describe("other directives with t-component", () => {
     el.click();
     expect(steps).toEqual(["click"]);
     parent.unmount();
-    expect(child.__owl__.isMounted).toBe(false);
+    expect(child.__owl__.status).toBe(STATUS.UNMOUNTED);
     el.click();
-    expect(steps).toEqual(["click"]);
+    expect(steps).toEqual(["click", "click"]);
+  });
+
+  test("triggering custom event on mounted components", async () => {
+    let value = false;
+    class Child extends Component {
+      static template = xml`<div/>`;
+      mounted() {
+        this.trigger("coucou");
+      }
+    }
+    class Parent extends Component {
+      static template = xml`<Child t-on-coucou="doSomething"/>`;
+      static components = { Child };
+      doSomething() {
+        value = true;
+      }
+    }
+    const parent = new Parent();
+    await parent.mount(fixture);
+    expect(value).toBe(true);
   });
 
   test("t-on with .capture modifier", async () => {
@@ -2281,7 +2417,7 @@ describe("other directives with t-component", () => {
     expect(steps).toEqual(["click"]);
     parent.state.flag = false;
     await nextTick();
-    expect(child.__owl__.isDestroyed).toBe(true);
+    expect(child.__owl__.status).toBe(STATUS.DESTROYED);
     el.click();
     expect(steps).toEqual(["click"]);
   });
@@ -2316,7 +2452,7 @@ describe("other directives with t-component", () => {
     expect(steps).toEqual(["click"]);
     parent.state.flag = false;
     await nextTick();
-    expect(child.__owl__.isDestroyed).toBe(true);
+    expect(child.__owl__.status).toBe(STATUS.DESTROYED);
     el.click();
     expect(steps).toEqual(["click"]);
   });
@@ -3928,6 +4064,30 @@ describe("dynamic t-props", () => {
     expect(fixture.innerHTML).toBe("<div><span>3</span></div>");
     expect(env.qweb.templates[Parent.template].fn.toString()).toMatchSnapshot();
   });
+
+  test("t-props with props", async () => {
+    expect.assertions(1);
+
+    class Child extends Component {
+      static template = xml`<div />`;
+      setup() {
+        expect(this.props).toEqual({ a: 1, b: 2, c: "c" });
+      }
+    }
+    class Parent extends Component {
+      static template = xml`
+        <div>
+            <Child t-props="props" a="1" b="2" />
+        </div>
+      `;
+      static components = { Child };
+
+      props = { a: "a", c: "c" };
+    }
+
+    const widget = new Parent();
+    await widget.mount(fixture);
+  });
 });
 
 describe("support svg components", () => {

tests/component/error_handling.test.ts

@@ -1,4 +1,4 @@
-import { Component, Env } from "../../src/component/component";
+import { Component, Env, mount, STATUS } from "../../src/component/component";
 import { useState } from "../../src/hooks";
 import { xml } from "../../src/tags";
 import { makeTestEnv, makeTestFixture, nextTick } from "../helpers";
@@ -108,7 +108,7 @@ describe("component error handling (catchError)", () => {
 
     expect(console.error).toBeCalledTimes(0);
     console.error = consoleError;
-    expect(app.__owl__.isDestroyed).toBe(true);
+    expect(app.__owl__.status).toBe(STATUS.DESTROYED);
     expect(handler).toBeCalledTimes(1);
   });
 
@@ -520,4 +520,91 @@ describe("component error handling (catchError)", () => {
     expect(error).toBeDefined();
     expect(error.message).toBe("Cannot read property 'y' of undefined");
   });
+
+  test("simple catchError", async () => {
+    class Boom extends Component {
+      static template = xml`<div t-esc="a.b.c"/>`;
+    }
+
+    class Parent extends Component {
+      static template = xml`
+        <div>
+          <t t-if="error">Error</t>
+          <t t-else="">
+            <Boom />
+          </t>
+        </div>`;
+      static components = { Boom };
+
+      error = false;
+
+      catchError(error) {
+        this.error = error;
+        this.render();
+      }
+    }
+
+    await mount(Parent, { target: fixture });
+    expect(fixture.innerHTML).toBe("<div>Error</div>");
+  });
+
+  test("catchError in catchError", async () => {
+    class Boom extends Component {
+      static template = xml`<div t-esc="a.b.c"/>`;
+    }
+
+    class Child extends Component {
+      static template = xml`
+        <div>
+          <Boom />
+        </div>`;
+      static components = { Boom };
+
+      catchError(error) {
+        throw error;
+      }
+    }
+
+    class Parent extends Component {
+      static template = xml`
+        <div>
+          <t t-if="error">Error</t>
+          <t t-else="">
+            <Child />
+          </t>
+        </div>`;
+      static components = { Child };
+
+      error = false;
+
+      catchError(error) {
+        this.error = error;
+        this.render();
+      }
+    }
+
+    await mount(Parent, { target: fixture });
+    expect(fixture.innerHTML).toBe("<div>Error</div>");
+  });
+
+  test("errors in mounted and in willUnmount", async () => {
+    expect.assertions(1);
+    class Example extends Component {
+      static template = xml`<div/>`;
+      val;
+      mounted() {
+        throw new Error("Error in mounted");
+        this.val = { foo: "bar" };
+      }
+      willUnmount() {
+        console.log(this.val.foo);
+      }
+    }
+
+    try {
+      await mount(Example, { target: fixture });
+    } catch (e) {
+      expect(e.message).toBe("Error in mounted");
+    }
+  });
 });

tests/component/slots.test.ts

@@ -325,6 +325,70 @@ describe("t-slot directive", () => {
     expect(QWeb.slots["1_default"].toString()).toMatchSnapshot();
   });
 
+  test("slots in t-foreach in t-foreach", async () => {
+    class Child extends Component {
+      static template = xml`
+        <div><t t-slot="default" /></div>
+      `;
+    }
+
+    class App extends Component {
+      static template = xml`
+        <div>
+          <t t-foreach="tree" t-as="node1" t-key="node1.key">
+            <div t-esc="node1.value" />
+            <ul>
+              <t t-foreach="node1.nodes" t-as="node2" t-key="node2.key">
+                <Child>
+                  <li t-esc="node1.value" />
+                </Child>
+              </t>
+            </ul>
+          </t>
+        </div>`;
+
+      static components = { Child };
+
+      tree = [
+        {
+          key: "a",
+          value: "A",
+          nodes: [
+            {
+              key: "1",
+              value: "A-1",
+            },
+            {
+              key: "2",
+              value: "A-2",
+            },
+          ],
+        },
+        {
+          key: "b",
+          value: "B",
+          nodes: [
+            {
+              key: "1",
+              value: "B-1",
+            },
+            {
+              key: "2",
+              value: "B-2",
+            },
+          ],
+        },
+      ];
+    }
+
+    await mount(App, { target: fixture });
+
+    expect(fixture.innerHTML).toBe(
+      "<div><div>A</div><ul><div><li>A</li></div><div><li>A</li></div></ul><div>B</div><ul><div><li>B</li></div><div><li>B</li></div></ul></div>"
+    );
+    expect(env.qweb.templates[App.template].fn.toString()).toMatchSnapshot();
+  });
+
   test("refs are properly bound in slots", async () => {
     class Dialog extends Component {
       static template = xml`<span><t t-slot="footer"/></span>`;
@@ -403,6 +467,48 @@ describe("t-slot directive", () => {
     expect(QWeb.slots["1_default"].toString()).toMatchSnapshot();
   });
 
+  test("default slot next to named slot, with default content", async () => {
+    class Dialog extends Component {
+      // We're using 2 slots here: a "default" one and a "footer",
+      // both having default children nodes.
+      static template = xml`
+        <div class="Dialog">
+          <div class="content">
+            <t t-slot="default">
+              Default content
+            </t>
+          </div>
+          <div class="footer">
+            <t t-slot="footer">
+              Default footer
+            </t>
+          </div>
+        </div>
+      `;
+    }
+
+    class App extends Component {
+      // Here we're trying to assign the "footer" slot with some content
+      static components = { Dialog };
+      static template = xml`
+        <div>
+          <Dialog>
+            <t t-set-slot="footer">
+              Overridden footer
+            </t>
+          </Dialog>
+        </div>
+      `;
+    }
+
+    await mount(App, { target: fixture });
+
+    expect(fixture.innerHTML).toBe(
+      '<div><div class="Dialog"><div class="content"> Default content </div><div class="footer"> Overridden footer </div></div></div>'
+    );
+    expect(QWeb.TEMPLATES[App.template].fn.toString()).toMatchSnapshot();
+  });
+
   test("multiple roots are allowed in a named slot", async () => {
     env.qweb.addTemplates(`
           <templates>
@@ -1118,4 +1224,83 @@ describe("t-slot directive", () => {
 
     expect(env.qweb.templates[Toggler.template].fn.toString()).toMatchSnapshot();
   });
+
+  test("t-slot within dynamic t-call", async () => {
+    let child;
+    class Child extends Component {
+      static template = xml`<div class="child"/>`;
+      constructor(...args) {
+        super(...args);
+        child = this;
+      }
+    }
+
+    class Slotted extends Component {
+      static template = xml`<div class="slotted"><t t-slot="default" /></div>`;
+    }
+
+    class UsingTcallInSlotted extends Component {
+      tcallTemplate = xml`<div class="slot"><Child/></div>`;
+      static template = xml`
+      <div>
+        <Slotted>
+          <t t-call="{{ tcallTemplate }}"/>
+        </Slotted>
+      </div>`;
+      static components = { Slotted, Child };
+    }
+
+    await mount(UsingTcallInSlotted, { target: fixture });
+
+    expect(child.__owl__.parent).toBeInstanceOf(Slotted);
+    expect(fixture.innerHTML).toBe(
+      `<div><div class="slotted"><div class="slot"><div class="child"></div></div></div></div>`
+    );
+  });
+
+  test("t-slot scope context", async () => {
+    expect.assertions(1);
+
+    class Wrapper extends Component {
+      static template = xml`<t t-slot="default"/>`;
+    }
+
+    let dialog;
+
+    class Dialog extends Component {
+      static template = xml`
+        <Wrapper>
+          <div t-on-click="onClick">
+            <t t-slot="default" />
+          </div>
+        </Wrapper>
+      `;
+
+      static components = { Wrapper };
+
+      setup() {
+        dialog = this;
+      }
+
+      onClick(ev) {
+        // we do not use expect(this).toBe(dialog) here because if it fails, it
+        // may blow up jest because it then tries to compute a diff, which is
+        // infinite if there is a cycle
+        expect(this === dialog).toBe(true);
+      }
+    }
+
+    class Parent extends Component {
+      static template = xml`
+        <Dialog>
+            <button>The Button</button>
+        </Dialog>`;
+      static components = { Dialog };
+    }
+
+    await mount(Parent, { target: fixture });
+
+    document.querySelector("button").click();
+    await nextTick();
+  });
 });

tests/component/un_mounting.test.ts

@@ -323,6 +323,54 @@ describe("unmounting and remounting", () => {
     expect(steps).toEqual([2, 2, 3]);
   });
 
+  test("change state and render while mounted in detached dom", async () => {
+    class App extends Component {
+      static template = xml`<div><t t-esc="state.val"/></div>`;
+      state = useState({ val: 1 });
+    }
+
+    const detachedDiv = document.createElement("div");
+    const app = await mount(App, { target: detachedDiv });
+
+    expect(detachedDiv.innerHTML).toBe("<div>1</div>");
+    app.state.val = 2;
+    await nextTick();
+    expect(detachedDiv.innerHTML).toBe("<div>2</div>");
+  });
+
+  test("change state and render while not mounted ", async () => {
+    class App extends Component {
+      static template = xml`<div><t t-esc="state.val"/></div>`;
+      state = useState({ val: 1 });
+    }
+
+    const app = new App(null);
+
+    app.state.val = 2; // will call the render method (before being mounted)
+    await nextTick();
+
+    await app.mount(fixture);
+
+    expect(fixture.innerHTML).toBe("<div>2</div>");
+  });
+
+  test("destroy and change state after mounted in detached dom", async () => {
+    class App extends Component {
+      static template = xml`<div><t t-esc="state.val"/></div>`;
+      state = useState({ val: 1 });
+    }
+
+    const detachedDiv = document.createElement("div");
+    const app = await mount(App, { target: detachedDiv });
+
+    expect(detachedDiv.innerHTML).toBe("<div>1</div>");
+
+    app.destroy();
+    app.state.val = 2;
+    await nextTick();
+    expect(detachedDiv.innerHTML).toBe("");
+  });
+
   test("change state while component is unmounted", async () => {
     let child;
     class Child extends Component {
@@ -356,6 +404,40 @@ describe("unmounting and remounting", () => {
     expect(fixture.innerHTML).toBe("<div>P2<span>C2</span></div>");
   });
 
+  test("change state while component is mounted in a fragment", async () => {
+    class Child1 extends Component {
+      static template = xml`<span>C1</span>`;
+    }
+
+    class Child2 extends Component {
+      static template = xml`<span>C2</span>`;
+    }
+
+    class Parent extends Component {
+      static components = { Child1, Child2 };
+      static template = xml`
+        <div>
+          <Child1 t-if="child == 'c1'"/>
+          <Child2 t-if="child == 'c2'"/>
+        </div>`;
+      child: string | false = false;
+    }
+
+    const fragment = document.createDocumentFragment();
+    const parent = new Parent();
+    await parent.mount(fragment);
+    expect(parent.el.outerHTML).toBe("<div></div>");
+
+    parent.child = "c1";
+    parent.render();
+    await Promise.resolve();
+
+    parent.child = "c2";
+    await parent.mount(fixture);
+
+    expect(fixture.innerHTML).toBe("<div><span>C2</span></div>");
+  });
+
   test("unmount component during a re-rendering", async () => {
     const def = makeDeferred();
     class Child extends Component {
@@ -442,17 +524,17 @@ describe("unmounting and remounting", () => {
     // one full tick.
     await nextMicroTick();
     await nextMicroTick();
-    expect(steps).toEqual(["1 catch"]);
+    expect(steps).toEqual([]);
     await nextTick();
     expect(fixture.innerHTML).toBe("<div></div><span></span>");
 
     def.resolve();
     await nextTick();
-    expect(steps).toEqual(["1 catch", "2 resolved"]);
+    expect(steps).toEqual(["2 resolved"]);
     expect(fixture.innerHTML).toBe("<div></div><span><div>Hey</div></span>");
   });
 
-  test("widget can be mounted on same target, another situation", async () => {
+  test("component can be mounted on same target, another situation", async () => {
     const def = makeDeferred();
     const steps: string[] = [];
 
@@ -480,8 +562,8 @@ describe("unmounting and remounting", () => {
 
     def.resolve();
     await nextTick();
-    expect(steps).toEqual(["1 resolved", "2 resolved"]);
     expect(fixture.innerHTML).toBe("<div>Hey</div>");
+    expect(steps).toEqual(["1 resolved", "2 resolved"]);
   });
 
   test("mounting a destroyed widget", async () => {

tests/helpers.ts

@@ -1,4 +1,4 @@
-import { Env, Component } from "../src/component/component";
+import { Env, Component, STATUS } from "../src/component/component";
 import { scheduler } from "../src/component/scheduler";
 import { EvalContext, QWeb } from "../src/qweb/qweb";
 import { CompilationContext } from "../src/qweb/compilation_context";
@@ -92,7 +92,7 @@ export function renderToDOM(
   if (!context.__owl__) {
     // we add `__owl__` to better simulate a component as context.  This is
     // particularly important for event handlers added with the `t-on` directive.
-    context.__owl__ = { isMounted: true };
+    context.__owl__ = { status: STATUS.MOUNTED };
   }
   const vnode = qweb.render(template, context, extra);
 

tests/qweb/__snapshots__/qweb.test.ts.snap

@@ -7,7 +7,7 @@ exports[`attributes class and t-att-class should combine together 1`] = `
     let utils = this.constructor.utils;
     let scope = Object.create(context);
     let h = this.h;
-    let _1 = utils.toObj(scope['value']);
+    let _1 = utils.toClassObj(scope['value']);
     Object.assign(_1, {'hello':true})
     let c3 = [], p3 = {key:3,class:_1};
     let vn3 = h('div', p3, c3);
@@ -74,7 +74,7 @@ exports[`attributes dynamic class attribute 1`] = `
     let utils = this.constructor.utils;
     let scope = Object.create(context);
     let h = this.h;
-    let _1 = utils.toObj(scope['c']);
+    let _1 = utils.toClassObj(scope['c']);
     let c2 = [], p2 = {key:2,class:_1};
     let vn2 = h('div', p2, c2);
     return vn2;
@@ -88,7 +88,7 @@ exports[`attributes dynamic empty class attribute 1`] = `
     let utils = this.constructor.utils;
     let scope = Object.create(context);
     let h = this.h;
-    let _1 = utils.toObj(scope['c']);
+    let _1 = utils.toClassObj(scope['c']);
     let c2 = [], p2 = {key:2,class:_1};
     let vn2 = h('div', p2, c2);
     return vn2;
@@ -195,7 +195,7 @@ exports[`attributes from object variables set previously 1`] = `
     let c1 = [], p1 = {key:1};
     let vn1 = h('div', p1, c1);
     scope.o = {a:'b'};
-    let _2 = utils.toObj(scope.o.a);
+    let _2 = utils.toClassObj(scope.o.a);
     let c3 = [], p3 = {key:3,class:_2};
     let vn3 = h('span', p3, c3);
     c1.push(vn3);
@@ -213,7 +213,7 @@ exports[`attributes from variables set previously 1`] = `
     let c1 = [], p1 = {key:1};
     let vn1 = h('div', p1, c1);
     scope.abc = 'def';
-    let _2 = utils.toObj(scope.abc);
+    let _2 = utils.toClassObj(scope.abc);
     let c3 = [], p3 = {key:3,class:_2};
     let vn3 = h('span', p3, c3);
     c1.push(vn3);
@@ -288,7 +288,7 @@ exports[`attributes t-att-class and class should combine together 1`] = `
     let scope = Object.create(context);
     let h = this.h;
     let _2 = {'hello':true};
-    Object.assign(_2, utils.toObj(scope['value']))
+    Object.assign(_2, utils.toClassObj(scope['value']))
     let c3 = [], p3 = {key:3,class:_2};
     let vn3 = h('div', p3, c3);
     return vn3;
@@ -303,7 +303,7 @@ exports[`attributes t-att-class with object 1`] = `
     let scope = Object.create(context);
     let h = this.h;
     let _2 = {'static':true};
-    Object.assign(_2, utils.toObj({a:scope['b'],c:scope['d'],e:scope['f']}))
+    Object.assign(_2, utils.toClassObj({a:scope['b'],c:scope['d'],e:scope['f']}))
     let c3 = [], p3 = {key:3,class:_2};
     let vn3 = h('div', p3, c3);
     return vn3;
@@ -1073,6 +1073,39 @@ exports[`special cases for some specific html attributes/properties input type=
 }"
 `;
 
+exports[`special cases for some specific html attributes/properties select with t-att-value 1`] = `
+"function anonymous(context, extra
+) {
+    // Template name: \\"test\\"
+    let scope = Object.create(context);
+    let h = this.h;
+    let expr1 = scope['value'];
+    let c3 = [], p3 = {key:3,attrs:{value: expr1},props:{value: expr1}};
+    let vn3 = h('select', p3, c3);
+    p3.hook = {
+      create: (_, n) => {
+        n.elm.value=expr1;
+      },
+    };
+    let _4 = 'potato';
+    let c5 = [], p5 = {key:5,attrs:{value: _4}};
+    let vn5 = h('option', p5, c5);
+    c3.push(vn5);
+    c5.push({text: \`Potato\`});
+    let _6 = 'tomato';
+    let c7 = [], p7 = {key:7,attrs:{value: _6}};
+    let vn7 = h('option', p7, c7);
+    c3.push(vn7);
+    c7.push({text: \`Tomato\`});
+    let _8 = 'onion';
+    let c9 = [], p9 = {key:9,attrs:{value: _8}};
+    let vn9 = h('option', p9, c9);
+    c3.push(vn9);
+    c9.push({text: \`Onion\`});
+    return vn3;
+}"
+`;
+
 exports[`special cases for some specific html attributes/properties various boolean html attributes 1`] = `
 "function anonymous(context, extra
 ) {
@@ -1203,6 +1236,55 @@ exports[`static templates empty div 1`] = `
 }"
 `;
 
+exports[`static templates inline template string in t-esc 1`] = `
+"function anonymous(context, extra
+) {
+    // Template name: \\"test\\"
+    let scope = Object.create(context);
+    let result;
+    let h = this.h;
+    let _1 = \`text\`;
+    if (_1 != null) {
+        let vn2 = {text: _1};
+        result = vn2
+    }
+    return result;
+}"
+`;
+
+exports[`static templates inline template string with content in t-esc 1`] = `
+"function anonymous(context, extra
+) {
+    // Template name: \\"test\\"
+    let scope = Object.create(context);
+    let result;
+    let h = this.h;
+    scope.v = 1;
+    let _1 = \`text\${scope.v}\`;
+    if (_1 != null) {
+        let vn2 = {text: _1};
+        result = vn2
+    }
+    return result;
+}"
+`;
+
+exports[`static templates inline template string with variable in context 1`] = `
+"function anonymous(context, extra
+) {
+    // Template name: \\"test\\"
+    let scope = Object.create(context);
+    let result;
+    let h = this.h;
+    let _1 = \`text \${scope['v']}\`;
+    if (_1 != null) {
+        let vn2 = {text: _1};
+        result = vn2
+    }
+    return result;
+}"
+`;
+
 exports[`static templates properly handle comments 1`] = `
 "function anonymous(context, extra
 ) {
@@ -1514,6 +1596,7 @@ exports[`t-call (template calling recursive template, part 1 2`] = `
 ) {
     // Template name: \\"recursive\\"
     let utils = this.constructor.utils;
+    let parent = extra.parent;
     let scope = Object.create(context);
     let h = this.h;
     let c3 = extra.parentNode;
@@ -1530,7 +1613,7 @@ exports[`t-call (template calling recursive template, part 1 2`] = `
         scope = Object.create(scope);
         scope.__access_mode__ = 'ro';
         let k7 = \`__7__\${key0}__\`;
-        this.constructor.subTemplates['1'].call(this, scope, Object.assign({}, extra, {parentNode: c4, parent: utils.getComponent(context), key: k7}));
+        this.constructor.subTemplates['1'].call(this, scope, Object.assign({}, extra, {parentNode: c4, parent: parent, key: k7}));
         scope = _origScope6;
     }
 }"
@@ -1566,6 +1649,7 @@ exports[`t-call (template calling recursive template, part 2 2`] = `
 ) {
     // Template name: \\"nodeTemplate\\"
     let utils = this.constructor.utils;
+    let parent = extra.parent;
     let scope = Object.create(context);
     let h = this.h;
     let c2 = extra.parentNode;
@@ -1607,7 +1691,7 @@ exports[`t-call (template calling recursive template, part 2 2`] = `
                 scope[utils.zero] = c__0;
             }
             let k11 = \`__11__\${key0}__\${key1}__\`;
-            this.constructor.subTemplates['1'].call(this, scope, Object.assign({}, extra, {parentNode: c3, parent: utils.getComponent(context), key: k11}));
+            this.constructor.subTemplates['1'].call(this, scope, Object.assign({}, extra, {parentNode: c3, parent: parent, key: k11}));
         }
         scope = _origScope10;
     }
@@ -1645,6 +1729,7 @@ exports[`t-call (template calling recursive template, part 3 2`] = `
 ) {
     // Template name: \\"nodeTemplate\\"
     let utils = this.constructor.utils;
+    let parent = extra.parent;
     let scope = Object.create(context);
     let h = this.h;
     let c2 = extra.parentNode;
@@ -1686,7 +1771,7 @@ exports[`t-call (template calling recursive template, part 3 2`] = `
                 scope[utils.zero] = c__0;
             }
             let k11 = \`__11__\${key0}__\${key1}__\`;
-            this.constructor.subTemplates['1'].call(this, scope, Object.assign({}, extra, {parentNode: c3, parent: utils.getComponent(context), key: k11}));
+            this.constructor.subTemplates['1'].call(this, scope, Object.assign({}, extra, {parentNode: c3, parent: parent, key: k11}));
         }
         scope = _origScope10;
     }
@@ -1725,6 +1810,7 @@ exports[`t-call (template calling recursive template, part 4: with t-set recursi
 ) {
     // Template name: \\"nodeTemplate\\"
     let utils = this.constructor.utils;
+    let parent = extra.parent;
     let scope = Object.create(context);
     let h = this.h;
     let c2 = extra.parentNode;
@@ -1771,7 +1857,7 @@ exports[`t-call (template calling recursive template, part 4: with t-set recursi
                 scope[utils.zero] = c__0;
             }
             let k11 = \`__11__\${key0}__\${key1}__\`;
-            this.constructor.subTemplates['1'].call(this, scope, Object.assign({}, extra, {parentNode: c3, parent: utils.getComponent(context), key: k11}));
+            this.constructor.subTemplates['1'].call(this, scope, Object.assign({}, extra, {parentNode: c3, parent: parent, key: k11}));
         }
         scope = _origScope10;
     }
@@ -2727,7 +2813,7 @@ exports[`t-on can bind event handler 1`] = `
     let h = this.h;
     let c1 = [], p1 = {key:1,on:{}};
     let vn1 = h('button', p1, c1);
-    extra.handlers['click__2__'] = extra.handlers['click__2__'] || function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['add'](e);};
+    extra.handlers['click__2__'] = extra.handlers['click__2__'] || function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['add'](e);};
     p1.on['click'] = extra.handlers['click__2__'];
     c1.push({text: \`Click\`});
     return vn1;
@@ -2744,7 +2830,7 @@ exports[`t-on can bind handlers with arguments 1`] = `
     let c1 = [], p1 = {key:1,on:{}};
     let vn1 = h('button', p1, c1);
     let args2 = [5];
-    p1.on['click'] = function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['add'](...args2, e);};
+    p1.on['click'] = function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['add'](...args2, e);};
     c1.push({text: \`Click\`});
     return vn1;
 }"
@@ -2760,7 +2846,7 @@ exports[`t-on can bind handlers with empty object (with non empty inner string)
     let c1 = [], p1 = {key:1,on:{}};
     let vn1 = h('button', p1, c1);
     let args2 = [{}];
-    p1.on['click'] = function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['doSomething'](...args2, e);};
+    p1.on['click'] = function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['doSomething'](...args2, e);};
     c1.push({text: \`Click\`});
     return vn1;
 }"
@@ -2776,7 +2862,7 @@ exports[`t-on can bind handlers with empty object 1`] = `
     let c1 = [], p1 = {key:1,on:{}};
     let vn1 = h('button', p1, c1);
     let args2 = [{}];
-    p1.on['click'] = function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['doSomething'](...args2, e);};
+    p1.on['click'] = function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['doSomething'](...args2, e);};
     c1.push({text: \`Click\`});
     return vn1;
 }"
@@ -2815,7 +2901,7 @@ exports[`t-on can bind handlers with loop variable as argument 1`] = `
         let vn7 = h('a', p7, c7);
         c6.push(vn7);
         let args8 = [scope['action']];
-        p7.on['click'] = function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['activate'](...args8, e);};
+        p7.on['click'] = function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['activate'](...args8, e);};
         c7.push({text: \`link\`});
     }
     scope = _origScope5;
@@ -2833,7 +2919,7 @@ exports[`t-on can bind handlers with object arguments 1`] = `
     let c1 = [], p1 = {key:1,on:{}};
     let vn1 = h('button', p1, c1);
     let args2 = [{val:5}];
-    p1.on['click'] = function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['add'](...args2, e);};
+    p1.on['click'] = function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['add'](...args2, e);};
     c1.push({text: \`Click\`});
     return vn1;
 }"
@@ -2847,9 +2933,9 @@ exports[`t-on can bind two event handlers 1`] = `
     let h = this.h;
     let c1 = [], p1 = {key:1,on:{}};
     let vn1 = h('button', p1, c1);
-    extra.handlers['click__2__'] = extra.handlers['click__2__'] || function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['handleClick'](e);};
+    extra.handlers['click__2__'] = extra.handlers['click__2__'] || function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['handleClick'](e);};
     p1.on['click'] = extra.handlers['click__2__'];
-    extra.handlers['dblclick__3__'] = extra.handlers['dblclick__3__'] || function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['handleDblClick'](e);};
+    extra.handlers['dblclick__3__'] = extra.handlers['dblclick__3__'] || function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['handleDblClick'](e);};
     p1.on['dblclick'] = extra.handlers['dblclick__3__'];
     c1.push({text: \`Click\`});
     return vn1;
@@ -2864,7 +2950,7 @@ exports[`t-on handler is bound to proper owner 1`] = `
     let h = this.h;
     let c1 = [], p1 = {key:1,on:{}};
     let vn1 = h('button', p1, c1);
-    extra.handlers['click__2__'] = extra.handlers['click__2__'] || function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['add'](e);};
+    extra.handlers['click__2__'] = extra.handlers['click__2__'] || function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['add'](e);};
     p1.on['click'] = extra.handlers['click__2__'];
     c1.push({text: \`Click\`});
     return vn1;
@@ -2883,7 +2969,7 @@ exports[`t-on t-on combined with t-esc 1`] = `
     let c2 = [], p2 = {key:2,on:{}};
     let vn2 = h('button', p2, c2);
     c1.push(vn2);
-    extra.handlers['click__3__'] = extra.handlers['click__3__'] || function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['onClick'](e);};
+    extra.handlers['click__3__'] = extra.handlers['click__3__'] || function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['onClick'](e);};
     p2.on['click'] = extra.handlers['click__3__'];
     let _4 = scope['text'];
     if (_4 != null) {
@@ -2905,7 +2991,7 @@ exports[`t-on t-on combined with t-raw 1`] = `
     let c2 = [], p2 = {key:2,on:{}};
     let vn2 = h('button', p2, c2);
     c1.push(vn2);
-    extra.handlers['click__3__'] = extra.handlers['click__3__'] || function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['onClick'](e);};
+    extra.handlers['click__3__'] = extra.handlers['click__3__'] || function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['onClick'](e);};
     p2.on['click'] = extra.handlers['click__3__'];
     let _4 = scope['html'];
     if (_4 != null) {
@@ -2923,12 +3009,12 @@ exports[`t-on t-on with .capture modifier 1`] = `
     let h = this.h;
     let c1 = [], p1 = {key:1,on:{}};
     let vn1 = h('div', p1, c1);
-    extra.handlers['!click__2__'] = extra.handlers['!click__2__'] || function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['onCapture'](e);};
+    extra.handlers['!click__2__'] = extra.handlers['!click__2__'] || function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['onCapture'](e);};
     p1.on['!click'] = extra.handlers['!click__2__'];
     let c3 = [], p3 = {key:3,on:{}};
     let vn3 = h('button', p3, c3);
     c1.push(vn3);
-    extra.handlers['click__4__'] = extra.handlers['click__4__'] || function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['doSomething'](e);};
+    extra.handlers['click__4__'] = extra.handlers['click__4__'] || function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['doSomething'](e);};
     p3.on['click'] = extra.handlers['click__4__'];
     c3.push({text: \`Button\`});
     return vn1;
@@ -2946,7 +3032,7 @@ exports[`t-on t-on with empty handler (only modifiers) 1`] = `
     let c2 = [], p2 = {key:2,on:{}};
     let vn2 = h('button', p2, c2);
     c1.push(vn2);
-    p2.on['click'] = function (e) {if (!context.__owl__.isMounted){return}e.preventDefault();};
+    p2.on['click'] = function (e) {if (context.__owl__.status === 5){return}e.preventDefault();const res = (() => { return  })(); if (typeof res === 'function') { res(e) }};
     c2.push({text: \`Button\`});
     return vn1;
 }"
@@ -2961,7 +3047,7 @@ exports[`t-on t-on with inline statement (function call) 1`] = `
     let c1 = [], p1 = {key:1,on:{}};
     let vn1 = h('button', p1, c1);
     const state_2 = scope['state'];
-    p1.on['click'] = function (e) {if (!context.__owl__.isMounted){return}state_2.incrementCounter(2)};
+    p1.on['click'] = function (e) {if (context.__owl__.status === 5){return}const res = (() => { return state_2.incrementCounter(2) })(); if (typeof res === 'function') { res(e) }};
     c1.push({text: \`Click\`});
     return vn1;
 }"
@@ -2976,7 +3062,7 @@ exports[`t-on t-on with inline statement 1`] = `
     let c1 = [], p1 = {key:1,on:{}};
     let vn1 = h('button', p1, c1);
     const state_2 = scope['state'];
-    p1.on['click'] = function (e) {if (!context.__owl__.isMounted){return}state_2.counter++};
+    p1.on['click'] = function (e) {if (context.__owl__.status === 5){return}const res = (() => { return state_2.counter++ })(); if (typeof res === 'function') { res(e) }};
     c1.push({text: \`Click\`});
     return vn1;
 }"
@@ -2991,7 +3077,7 @@ exports[`t-on t-on with inline statement, part 2 1`] = `
     let c1 = [], p1 = {key:1,on:{}};
     let vn1 = h('button', p1, c1);
     const state_2 = scope['state'];
-    p1.on['click'] = function (e) {if (!context.__owl__.isMounted){return}state_2.flag=!state_2.flag};
+    p1.on['click'] = function (e) {if (context.__owl__.status === 5){return}const res = (() => { return state_2.flag=!state_2.flag })(); if (typeof res === 'function') { res(e) }};
     c1.push({text: \`Toggle\`});
     return vn1;
 }"
@@ -3007,7 +3093,7 @@ exports[`t-on t-on with inline statement, part 3 1`] = `
     let vn1 = h('button', p1, c1);
     const state_2 = scope['state'];
     const someFunction_2 = scope['someFunction'];
-    p1.on['click'] = function (e) {if (!context.__owl__.isMounted){return}state_2.n=someFunction_2(3)};
+    p1.on['click'] = function (e) {if (context.__owl__.status === 5){return}const res = (() => { return state_2.n=someFunction_2(3) })(); if (typeof res === 'function') { res(e) }};
     c1.push({text: \`Toggle\`});
     return vn1;
 }"
@@ -3024,7 +3110,7 @@ exports[`t-on t-on with prevent and self modifiers (order matters) 1`] = `
     let c2 = [], p2 = {key:2,on:{}};
     let vn2 = h('button', p2, c2);
     c1.push(vn2);
-    extra.handlers['click__3__'] = extra.handlers['click__3__'] || function (e) {if (!context.__owl__.isMounted){return}e.preventDefault();if (e.target !== this.elm) {return}utils.getComponent(context)['onClick'](e);};
+    extra.handlers['click__3__'] = extra.handlers['click__3__'] || function (e) {if (context.__owl__.status === 5){return}e.preventDefault();if (e.target !== this.elm) {return}utils.getComponent(context)['onClick'](e);};
     p2.on['click'] = extra.handlers['click__3__'];
     let c4 = [], p4 = {key:4};
     let vn4 = h('span', p4, c4);
@@ -3045,19 +3131,19 @@ exports[`t-on t-on with prevent and/or stop modifiers 1`] = `
     let c2 = [], p2 = {key:2,on:{}};
     let vn2 = h('button', p2, c2);
     c1.push(vn2);
-    extra.handlers['click__3__'] = extra.handlers['click__3__'] || function (e) {if (!context.__owl__.isMounted){return}e.preventDefault();utils.getComponent(context)['onClickPrevented'](e);};
+    extra.handlers['click__3__'] = extra.handlers['click__3__'] || function (e) {if (context.__owl__.status === 5){return}e.preventDefault();utils.getComponent(context)['onClickPrevented'](e);};
     p2.on['click'] = extra.handlers['click__3__'];
     c2.push({text: \`Button 1\`});
     let c4 = [], p4 = {key:4,on:{}};
     let vn4 = h('button', p4, c4);
     c1.push(vn4);
-    extra.handlers['click__5__'] = extra.handlers['click__5__'] || function (e) {if (!context.__owl__.isMounted){return}e.stopPropagation();utils.getComponent(context)['onClickStopped'](e);};
+    extra.handlers['click__5__'] = extra.handlers['click__5__'] || function (e) {if (context.__owl__.status === 5){return}e.stopPropagation();utils.getComponent(context)['onClickStopped'](e);};
     p4.on['click'] = extra.handlers['click__5__'];
     c4.push({text: \`Button 2\`});
     let c6 = [], p6 = {key:6,on:{}};
     let vn6 = h('button', p6, c6);
     c1.push(vn6);
-    extra.handlers['click__7__'] = extra.handlers['click__7__'] || function (e) {if (!context.__owl__.isMounted){return}e.preventDefault();e.stopPropagation();utils.getComponent(context)['onClickPreventedAndStopped'](e);};
+    extra.handlers['click__7__'] = extra.handlers['click__7__'] || function (e) {if (context.__owl__.status === 5){return}e.preventDefault();e.stopPropagation();utils.getComponent(context)['onClickPreventedAndStopped'](e);};
     p6.on['click'] = extra.handlers['click__7__'];
     c6.push({text: \`Button 3\`});
     return vn1;
@@ -3097,7 +3183,7 @@ exports[`t-on t-on with prevent modifier in t-foreach 1`] = `
             let vn7 = h('a', p7, c7);
             c1.push(vn7);
             let args8 = [scope['project'].id];
-            p7.on['click'] = function (e) {if (!context.__owl__.isMounted){return}e.preventDefault();utils.getComponent(context)['onEdit'](...args8, e);};
+            p7.on['click'] = function (e) {if (context.__owl__.status === 5){return}e.preventDefault();utils.getComponent(context)['onEdit'](...args8, e);};
             c7.push({text: \` Edit \`});
             let _9 = scope['project'].name;
             if (_9 != null) {
@@ -3121,7 +3207,7 @@ exports[`t-on t-on with self and prevent modifiers (order matters) 1`] = `
     let c2 = [], p2 = {key:2,on:{}};
     let vn2 = h('button', p2, c2);
     c1.push(vn2);
-    extra.handlers['click__3__'] = extra.handlers['click__3__'] || function (e) {if (!context.__owl__.isMounted){return}if (e.target !== this.elm) {return}e.preventDefault();utils.getComponent(context)['onClick'](e);};
+    extra.handlers['click__3__'] = extra.handlers['click__3__'] || function (e) {if (context.__owl__.status === 5){return}if (e.target !== this.elm) {return}e.preventDefault();utils.getComponent(context)['onClick'](e);};
     p2.on['click'] = extra.handlers['click__3__'];
     let c4 = [], p4 = {key:4};
     let vn4 = h('span', p4, c4);
@@ -3142,7 +3228,7 @@ exports[`t-on t-on with self modifier 1`] = `
     let c2 = [], p2 = {key:2,on:{}};
     let vn2 = h('button', p2, c2);
     c1.push(vn2);
-    extra.handlers['click__3__'] = extra.handlers['click__3__'] || function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['onClick'](e);};
+    extra.handlers['click__3__'] = extra.handlers['click__3__'] || function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['onClick'](e);};
     p2.on['click'] = extra.handlers['click__3__'];
     let c4 = [], p4 = {key:4};
     let vn4 = h('span', p4, c4);
@@ -3151,7 +3237,7 @@ exports[`t-on t-on with self modifier 1`] = `
     let c5 = [], p5 = {key:5,on:{}};
     let vn5 = h('button', p5, c5);
     c1.push(vn5);
-    extra.handlers['click__6__'] = extra.handlers['click__6__'] || function (e) {if (!context.__owl__.isMounted){return}if (e.target !== this.elm) {return}utils.getComponent(context)['onClickSelf'](e);};
+    extra.handlers['click__6__'] = extra.handlers['click__6__'] || function (e) {if (context.__owl__.status === 5){return}if (e.target !== this.elm) {return}utils.getComponent(context)['onClickSelf'](e);};
     p5.on['click'] = extra.handlers['click__6__'];
     let c7 = [], p7 = {key:7};
     let vn7 = h('span', p7, c7);

tests/qweb/__snapshots__/qweb_t_att.test.ts.snap

@@ -0,0 +1,29 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`qweb t-att t-att-class with multiple classes 1`] = `
+"function anonymous(context, extra
+) {
+    // Template name: \\"test\\"
+    let utils = this.constructor.utils;
+    let scope = Object.create(context);
+    let h = this.h;
+    let _1 = utils.toClassObj({'a b c':scope['value']});
+    let c2 = [], p2 = {key:2,class:_1};
+    let vn2 = h('div', p2, c2);
+    return vn2;
+}"
+`;
+
+exports[`qweb t-att t-att-class with multiple classes 2`] = `
+"function anonymous(context, extra
+) {
+    // Template name: \\"test\\"
+    let utils = this.constructor.utils;
+    let scope = Object.create(context);
+    let h = this.h;
+    let _3 = utils.toClassObj({['a b c']:scope['value']});
+    let c4 = [], p4 = {key:4,class:_3};
+    let vn4 = h('div', p4, c4);
+    return vn4;
+}"
+`;

tests/qweb/__snapshots__/qweb_t_tag.test.ts.snap

@@ -0,0 +1,71 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`qweb t-tag simple usecases 1`] = `
+"function anonymous(context, extra
+) {
+    // Template name: \\"test\\"
+    let scope = Object.create(context);
+    let result;
+    let h = this.h;
+    let c1 = [], p1 = {key:1};
+    let tag2 = 'div';
+    let vn1 = h(tag2, p1, c1);
+    result = vn1;
+    return result;
+}"
+`;
+
+exports[`qweb t-tag simple usecases 2`] = `
+"function anonymous(context, extra
+) {
+    // Template name: \\"test\\"
+    let scope = Object.create(context);
+    let result;
+    let h = this.h;
+    let c3 = [], p3 = {key:3};
+    let tag4 = scope['tag'];
+    let vn3 = h(tag4, p3, c3);
+    result = vn3;
+    c3.push({text: \`text\`});
+    return result;
+}"
+`;
+
+exports[`qweb t-tag with multiple attributes 1`] = `
+"function anonymous(context, extra
+) {
+    // Template name: \\"test\\"
+    let scope = Object.create(context);
+    let result;
+    let h = this.h;
+    let _2 = {'blueberry':true};
+    let _3 = 'raspberry';
+    let c4 = [], p4 = {key:4,attrs:{taste: _3},class:_2};
+    let tag5 = scope['tag'];
+    let vn4 = h(tag5, p4, c4);
+    result = vn4;
+    c4.push({text: \`gooseberry\`});
+    return result;
+}"
+`;
+
+exports[`qweb t-tag with multiple child nodes 1`] = `
+"function anonymous(context, extra
+) {
+    // Template name: \\"test\\"
+    let scope = Object.create(context);
+    let result;
+    let h = this.h;
+    let c1 = [], p1 = {key:1};
+    let tag2 = scope['tag'];
+    let vn1 = h(tag2, p1, c1);
+    result = vn1;
+    c1.push({text: \` pear \`});
+    let c3 = [], p3 = {key:3};
+    let vn3 = h('span', p3, c3);
+    c1.push(vn3);
+    c3.push({text: \`apple\`});
+    c1.push({text: \` strawberry \`});
+    return result;
+}"
+`;

tests/qweb/qweb.test.ts

@@ -31,6 +31,21 @@ describe("static templates", () => {
     expect(renderToString(qweb, "test", { text: "hello vdom" })).toBe("hello vdom");
   });
 
+  test("inline template string in t-esc", () => {
+    qweb.addTemplate("test", '<t><t t-esc="`text`"/></t>');
+    expect(renderToString(qweb, "test")).toBe("text");
+  });
+
+  test("inline template string with content in t-esc", () => {
+    qweb.addTemplate("test", '<t><t t-set="v" t-value="1"/><t t-esc="`text${v}`"/></t>');
+    expect(renderToString(qweb, "test")).toBe("text1");
+  });
+
+  test("inline template string with variable in context", () => {
+    qweb.addTemplate("test", '<t><t t-esc="`text ${v}`"/></t>');
+    expect(renderToString(qweb, "test", { v: "from context" })).toBe("text from context");
+  });
+
   test("simple string, with some dynamic value", () => {
     qweb.addTemplate("test", '<t>hello <t t-esc="text"/></t>');
     expect(renderToString(qweb, "test", { text: "vdom" })).toBe("hello vdom");
@@ -1931,6 +1946,49 @@ describe("special cases for some specific html attributes/properties", () => {
     let elm = vnode2.elm as HTMLInputElement;
     expect(elm.indeterminate).toBe(true);
   });
+
+  test("textarea with t-att-value", () => {
+    // render input with initial value
+    qweb.addTemplate("test", `<textarea  t-att-value="v"/>`);
+    const vnode1 = qweb.render("test", { v: "zucchini" });
+    const vnode2 = patch(document.createElement("textarea"), vnode1);
+    let elm = vnode2.elm as HTMLInputElement;
+    expect(elm.value).toBe("zucchini");
+
+    // change value manually in textarea, to simulate user textarea
+    elm.value = "tomato";
+    expect(elm.value).toBe("tomato");
+
+    // rerender with a different value, and patch actual dom, to check that
+    // textarea value was properly reset by owl
+    const vnode3 = qweb.render("test", { v: "potato" });
+    patch(vnode2, vnode3);
+    expect(elm.value).toBe("potato");
+  });
+
+  test("select with t-att-value", () => {
+    const template = `
+      <select t-att-value="value">
+        <option value="potato">Potato</option>
+        <option value="tomato">Tomato</option>
+        <option value="onion">Onion</option>
+      </select>`;
+    qweb.addTemplate("test", template);
+    const vnode1 = qweb.render("test", { value: "tomato" });
+    const vnode2 = patch(document.createElement("select"), vnode1);
+    let elm = vnode2.elm as HTMLSelectElement;
+    expect(elm.value).toBe("tomato");
+
+    elm.value = "potato";
+    expect(elm.value).toBe("potato");
+
+    // rerender with a different value, and patch actual dom, to check that
+    // select value was properly reset by owl
+    const vnode3 = qweb.render("test", { value: "onion" });
+    patch(vnode2, vnode3);
+    expect(elm.value).toBe("onion");
+    expect(qweb.templates.test.fn.toString()).toMatchSnapshot();
+  });
 });
 
 describe("whitespace handling", () => {

tests/qweb/qweb_expressions.test.ts

@@ -196,4 +196,31 @@ describe("expression evaluation", () => {
     expect(compileExpr("f(...state.list)", {})).toBe("scope['f'](...scope['state'].list)");
     expect(compileExpr("f([...list])", {})).toBe("scope['f']([...scope['list']])");
   });
+
+  test("works with builtin properties", () => {
+    expect(compileExpr("state.constructor.name", {})).toBe("scope['state'].constructor.name");
+  });
+
+  test("works with shortcut object key description", () => {
+    expect(compileExpr("{a}", {})).toBe("{a:scope['a']}");
+    expect(compileExpr("{a,b}", {})).toBe("{a:scope['a'],b:scope['b']}");
+    expect(compileExpr("{a,b:3,c}", {})).toBe("{a:scope['a'],b:3,c:scope['c']}");
+  });
+
+  test("works with short object description and lists ", () => {
+    expect(compileExpr("[a, b]", {})).toBe("[scope['a'],scope['b']]");
+    expect(compileExpr("[a, b, c]", {})).toBe("[scope['a'],scope['b'],scope['c']]");
+    expect(compileExpr("[a, {b, c},d]", {})).toBe(
+      "[scope['a'],{b:scope['b'],c:scope['c']},scope['d']]"
+    );
+    expect(compileExpr("{a:[b, {c, d: e}]}", {})).toBe(
+      "{a:[scope['b'],{c:scope['c'],d:scope['e']}]}"
+    );
+  });
+
+  test("template strings", () => {
+    expect(compileExpr("`hey`", {})).toBe("`hey`");
+    expect(compileExpr("`hey ${you}`", {})).toBe("`hey ${scope['you']}`");
+    expect(compileExpr("`hey ${1 + 2}`", {})).toBe("`hey ${1+2}`");
+  });
 });

tests/qweb/qweb_t_att.test.ts

@@ -0,0 +1,27 @@
+import { QWeb } from "../../src/qweb/index";
+import { renderToString } from "../helpers";
+
+//------------------------------------------------------------------------------
+// Setup and helpers
+//------------------------------------------------------------------------------
+
+function render(template, context = {}) {
+  const qweb = new QWeb();
+  qweb.addTemplate("test", template);
+  return renderToString(qweb, "test", context);
+}
+
+//------------------------------------------------------------------------------
+// Tests
+//------------------------------------------------------------------------------
+
+describe("qweb t-att", () => {
+  test("t-att-class with multiple classes", () => {
+    expect(render(`<div t-att-class="{'a b c': value}" />`, { value: true })).toBe(
+      '<div class="a b c"></div>'
+    );
+    expect(render(`<div t-att-class="{['a b c']: value}" />`, { value: true })).toBe(
+      '<div class="a b c"></div>'
+    );
+  });
+});

tests/qweb/qweb_t_tag.test.ts

@@ -0,0 +1,42 @@
+import { QWeb } from "../../src/qweb/index";
+import { renderToString } from "../helpers";
+
+//------------------------------------------------------------------------------
+// Setup and helpers
+//------------------------------------------------------------------------------
+
+function render(template, context = {}) {
+  const qweb = new QWeb();
+  qweb.addTemplate("test", template);
+  return renderToString(qweb, "test", context);
+}
+
+//------------------------------------------------------------------------------
+// Tests
+//------------------------------------------------------------------------------
+
+describe("qweb t-tag", () => {
+  test("simple usecases", () => {
+    expect(render(`<t t-tag="'div'"></t>`)).toBe("<div></div>");
+    expect(render(`<t t-tag="tag">text</t>`, { tag: "span" })).toBe("<span>text</span>");
+  });
+
+  test("with multiple child nodes", () => {
+    const template = `
+            <t t-tag="tag">
+                pear
+                <span>apple</span>
+                strawberry
+            </t>`;
+    expect(render(template, { tag: "div" })).toBe(
+      "<div> pear <span>apple</span> strawberry </div>"
+    );
+  });
+
+  test("with multiple attributes", () => {
+    const template = `
+            <t t-tag="tag" class="blueberry" taste="raspberry">gooseberry</t>`;
+    const expected = `<div taste=\"raspberry\" class=\"blueberry\">gooseberry</div>`;
+    expect(render(template, { tag: "div" })).toBe(expected);
+  });
+});

tests/router/__snapshots__/link.test.ts.snap

@@ -7,11 +7,11 @@ exports[`Link component can render simple cases 1`] = `
     let utils = this.constructor.utils;
     let scope = Object.create(context);
     let h = this.h;
-    let _5 = utils.toObj({'router-link-active':scope['isActive']});
+    let _5 = utils.toClassObj({'router-link-active':scope['isActive']});
     let _6 = scope['href'];
     let c7 = [], p7 = {key:7,attrs:{href: _6},class:_5,on:{}};
     let vn7 = h('a', p7, c7);
-    extra.handlers['click__8__'] = extra.handlers['click__8__'] || function (e) {if (!context.__owl__.isMounted){return}utils.getComponent(context)['navigate'](e);};
+    extra.handlers['click__8__'] = extra.handlers['click__8__'] || function (e) {if (context.__owl__.status === 5){return}utils.getComponent(context)['navigate'](e);};
     p7.on['click'] = extra.handlers['click__8__'];
     const slot9 = this.constructor.slots[context.__owl__.slotId + '_' + 'default'];
     if (slot9) {

tests/router/__snapshots__/route_component.test.ts.snap

@@ -18,7 +18,7 @@ exports[`RouteComponent can render simple cases 1`] = `
             let w4 = k5 in parent.__owl__.cmap ? parent.__owl__.children[parent.__owl__.cmap[k5]] : false;
             let vn6 = {};
             result = vn6;
-            let props4 = Object.assign({}, scope['env'].router.currentParams);
+            let props4 = Object.assign({}, scope['env'].router.currentParams, {});
             if (w4 && w4.__owl__.currentFiber && !w4.__owl__.vnode) {
                 w4.destroy();
                 w4 = false;
@@ -29,7 +29,7 @@ exports[`RouteComponent can render simple cases 1`] = `
                 utils.defineProxy(vn6, pvnode);
             } else {
                 let componentKey4 = \`routeComponent\`;
-                let W4 = context.constructor.components[componentKey4] || QWeb.components[componentKey4]|| scope['routeComponent'];
+                let W4 = scope['routeComponent'] || context.constructor.components[componentKey4] || QWeb.components[componentKey4];
                 if (!W4) {throw new Error('Cannot find the definition of component \\"' + componentKey4 + '\\"')}
                 w4 = new W4(parent, props4);
                 parent.__owl__.cmap[k5] = w4.__owl__.id;

tests/router/route_component.test.ts

@@ -103,4 +103,28 @@ describe("RouteComponent", () => {
     await app.mount(fixture);
     expect(fixture.innerHTML).toBe("<div><span>Book 1984|124</span></div>");
   });
+
+  test("can render parameterized route where params are not separated by slashes", async () => {
+    env.qweb.addTemplates(`
+        <templates>
+            <div t-name="App">
+                <RouteComponent />
+            </div>
+            <span t-name="Book">Book <t t-esc="props.title"/>|<t t-esc="props.val"/></span>
+        </templates>
+    `);
+    class Book extends Component {}
+    class App extends Component {
+      static components = { RouteComponent };
+    }
+
+    const routes = [
+      { name: "book", path: "/#title={{title}}&val={{val.number}}", component: Book },
+    ];
+    router = new TestRouter(env, routes, { mode: "hash" });
+    await router.navigate({ to: "book", params: { title: "1984", val: "123" } });
+    const app = new App();
+    await app.mount(fixture);
+    expect(fixture.innerHTML).toBe("<div><span>Book 1984|123</span></div>");
+  });
 });

tests/router/router.test.ts

@@ -1,6 +1,6 @@
 import { Destination, RouterEnv, Route } from "../../src/router/router";
 import { makeTestEnv, nextTick } from "../helpers";
-import { TestRouter } from "./test_router";
+import { TestRouter, getRouteParams } from "./test_router";
 
 let env: RouterEnv;
 let router: TestRouter | null = null;
@@ -60,6 +60,13 @@ describe("router miscellaneous", () => {
     await router.navigate({ to: "users", params: { id: 3 } });
     expect(window.location.href).toBe("http://localhost/test.html#/users/3");
   });
+
+  test("navigate using path and query string should preserve query string", async () => {
+    router = new TestRouter(env, [{ name: "users", path: "/users/{{id}}" }]);
+    await router.navigate({ path: "/users/3?test=1" });
+    expect(window.location.pathname).toBe("/users/3");
+    expect(window.location.search).toBe("?test=1");
+  });
 });
 
 describe("routeToPath", () => {
@@ -107,60 +114,69 @@ describe("destToPath", () => {
 
 describe("getRouteParams", () => {
   test("properly match simple routes", () => {
-    router = new TestRouter(env, []);
     // simple route
-    expect(router["getRouteParams"]({ path: "/home" } as Route, "/home")).toEqual({});
+    expect(getRouteParams({ path: "/home" }, "/home")).toEqual({});
 
     // no match
-    expect(router["getRouteParams"]({ path: "/home" } as Route, "/otherpath")).toEqual(false);
+    expect(getRouteParams({ path: "/home" }, "/otherpath")).toEqual(false);
 
     // fallback route
-    expect(router["getRouteParams"]({ path: "*" } as Route, "somepath")).toEqual({});
+    expect(getRouteParams({ path: "*" }, "somepath")).toEqual({});
+  });
+
+  test("properly match routes with query params", () => {
+    expect(getRouteParams({ path: "/home" }, "/home?test=1")).toEqual({});
+    expect(getRouteParams({ path: "/home" }, "/home?test1=1&test2=2")).toEqual({});
   });
 
   test("properly match simple routes, mode hash", () => {
-    router = new TestRouter(env, [], { mode: "hash" });
     // simple route
-    expect(router["getRouteParams"]({ path: "/home" } as Route, "#/home")).toEqual({});
+    expect(getRouteParams({ path: "/home" }, "#/home")).toEqual({});
 
     // no match
-    expect(router["getRouteParams"]({ path: "/home" } as Route, "#/otherpath")).toEqual(false);
+    expect(getRouteParams({ path: "/home" }, "#/otherpath")).toEqual(false);
 
     // fallback route
-    expect(router["getRouteParams"]({ path: "*" } as Route, "#/somepath")).toEqual({});
+    expect(getRouteParams({ path: "*" }, "#/somepath")).toEqual({});
   });
 
   test("match some parameterized routes", () => {
-    router = new TestRouter(env, []);
-    expect(router["getRouteParams"]({ path: "/invoices/{{id}}" } as Route, "/invoices/3")).toEqual({
+    expect(getRouteParams({ path: "/invoices/{{id}}" }, "/invoices/3")).toEqual({
       id: "3",
     });
   });
 
   test("match some parameterized routes, mode hash", () => {
-    router = new TestRouter(env, [], { mode: "hash" });
-    expect(router["getRouteParams"]({ path: "/invoices/{{id}}" } as Route, "#/invoices/3")).toEqual(
-      {
-        id: "3",
-      }
-    );
+    expect(getRouteParams({ path: "/invoices/{{id}}" }, "#/invoices/3")).toEqual({
+      id: "3",
+    });
   });
 
   test("can convert to number if needed", () => {
-    router = new TestRouter(env, []);
-    expect(
-      router["getRouteParams"]({ path: "/invoices/{{id.number}}" } as Route, "/invoices/3")
-    ).toEqual({
+    expect(getRouteParams({ path: "/invoices/{{id.number}}" }, "/invoices/3")).toEqual({
       id: 3,
     });
   });
 
   test("can convert to number if needed, mode: hash", () => {
-    router = new TestRouter(env, [], { mode: "hash" });
+    expect(getRouteParams({ path: "/invoices/{{id.number}}" }, "#/invoices/3")).toEqual({
+      id: 3,
+    });
+  });
+
+  test("can extract params not separated by slashes", () => {
+    expect(getRouteParams({ path: "/books/{{id.number}}-{{name}}" }, "/books/3-1984")).toEqual({
+      id: 3,
+      name: "1984",
+    });
+  });
+
+  test("can extract params not separated by slashes, mode: hash", () => {
     expect(
-      router["getRouteParams"]({ path: "/invoices/{{id.number}}" } as Route, "#/invoices/3")
+      getRouteParams({ path: "books&id={{id.number}}&name={{name}}" }, "#books&id=3&name=1984")
     ).toEqual({
       id: 3,
+      name: "1984",
     });
   });
 });

tests/router/test_router.ts

@@ -1,4 +1,5 @@
-import { Router } from "../../src/router/router";
+import { Router, Route, RouterEnv } from "../../src/router/router";
+import { makeTestEnv } from "../helpers";
 import { QWeb } from "../../src/qweb/index";
 
 export class TestRouter extends Router {
@@ -13,3 +14,13 @@ export class TestRouter extends Router {
     }
   }
 }
+
+export function getRouteParams(route: Partial<Route>, path: string) {
+  const env = <RouterEnv>makeTestEnv();
+  const router = new TestRouter(env, [route]);
+  const {
+    routeIds: [routeId],
+    routes,
+  } = router;
+  return router["getRouteParams"](routes[routeId], path);
+}

tests/tooling/debug_script_3.test.ts

@@ -8,7 +8,7 @@ import * as owl from "../../src/index";
 
 import { Component, Env } from "../../src/component/component";
 import { xml } from "../../src/tags";
-import { makeTestFixture, makeTestEnv } from "../helpers";
+import { makeTestFixture, makeTestEnv, nextTick } from "../helpers";
 
 let fixture: HTMLElement = makeTestFixture();
 let env: Env = makeTestEnv();
@@ -31,6 +31,7 @@ test("log a specific message for render method calls if component is not mounted
   parent.unmount();
   parent.state.value = 2;
 
+  await nextTick();
   expect(steps).toEqual([
     "[OWL_DEBUG] Parent<id=1> constructor, props={}",
     "[OWL_DEBUG] Parent<id=1> mount",
@@ -40,7 +41,10 @@ test("log a specific message for render method calls if component is not mounted
     "[OWL_DEBUG] Parent<id=1> mounted",
     "[OWL_DEBUG] scheduler: stop running tasks queue",
     "[OWL_DEBUG] Parent<id=1> willUnmount",
-    "[OWL_DEBUG] Parent<id=1> render (warning: component is not mounted, this render has no effect)",
+    "[OWL_DEBUG] Parent<id=1> render (warning: component is not mounted)",
+    "[OWL_DEBUG] scheduler: start running tasks queue",
+    "[OWL_DEBUG] Parent<id=1> rendering template",
+    "[OWL_DEBUG] scheduler: stop running tasks queue",
   ]);
   console.log = log;
 });

tools/debug.js

@@ -101,8 +101,8 @@
     component.render = function(...args) {
       const __owl__ = component.__owl__;
       let msg = `render`;
-      if (!__owl__.isMounted && !__owl__.currentFiber) {
-        msg += ` (warning: component is not mounted, this render has no effect)`;
+      if (__owl__.status !== 3 /* mounted */ && !__owl__.currentFiber) {
+        msg += ` (warning: component is not mounted)`;
       }
       log(msg);
       return render(...args);

tools/playground/app.js

@@ -72,7 +72,7 @@ if __name__ == "__main__":
  * Make an iframe, with all the js, css and xml properly injected.
  */
 function makeCodeIframe(js, css, xml) {
-  const sanitizedXML = xml.replace(/<!--[\s\S]*?-->/g, "");
+  const sanitizedXML = xml.replace(/<!--[\s\S]*?-->/g, "").replace(/`/g, '\\\`');
 
 
   // create iframe

tools/playground/samples.js

@@ -2,8 +2,7 @@ const COMPONENTS = `// In this example, we show how components can be defined an
 const { Component, useState, mount } = owl;
 
 class Greeter extends Component {
-    constructor() {
-        super(...arguments);
+    setup() {
         this.state = useState({ word: 'Hello' });
     }
 
@@ -14,10 +13,9 @@ class Greeter extends Component {
 
 // Main root component
 class App extends Component {
-    constructor() {
-        super(...arguments);
-        this.state = useState({ name: 'World'});
-    }
+  setup() {
+    this.state = useState({ name: 'World'});
+  }
 }
 App.components = { Greeter };
 
@@ -52,8 +50,7 @@ const ANIMATION = `// The goal of this component is to see how the t-transition
 const { Component, useState, mount } = owl;
 
 class Counter extends Component {
-    constructor() {
-        super(...arguments);
+    setup() {
         this.state = useState({ value: 0 });
     }
 
@@ -63,8 +60,7 @@ class Counter extends Component {
 }
 
 class App extends Component {
-    constructor() {
-        super(...arguments);
+    setup() {
         this.state = useState({ flag: false, componentFlag: false, numbers: [] });
     }
 
@@ -194,10 +190,9 @@ const LIFECYCLE_DEMO = `// This example shows all the possible lifecycle hooks
 const { Component, useState, mount } = owl;
 
 class DemoComponent extends Component {
-    constructor() {
-        super(...arguments);
+    setup() {
         this.state = useState({ n: 0 });
-        console.log("constructor");
+        console.log("setup");
     }
     async willStart() {
         console.log("willstart");
@@ -223,8 +218,7 @@ class DemoComponent extends Component {
 }
 
 class App extends Component {
-    constructor() {
-        super(...arguments);
+    setup() {
         this.state = useState({ n: 0, flag: true });
     }
 
@@ -295,8 +289,7 @@ function useMouse() {
 
 // Main root component
 class App extends owl.Component {
-    constructor() {
-        super(...arguments);
+    setup() {
         // simple state hook (reactive object)
         this.counter = useState({ value: 0 });
 
@@ -333,8 +326,7 @@ const { Component, Context, mount } = owl;
 const { useContext } = owl.hooks;
 
 class ToolbarButton extends Component {
-    constructor() {
-        super(...arguments);
+    setup() {
         this.theme = useContext(this.env.themeContext);
     }
 
@@ -468,8 +460,7 @@ const actions = {
 // TodoItem
 //------------------------------------------------------------------------------
 class TodoItem extends Component {
-    constructor() {
-        super(...arguments);
+    setup() {
         useAutofocus("input");
         this.state = useState({ isEditing: false });
         this.dispatch = useDispatch();
@@ -499,8 +490,7 @@ class TodoItem extends Component {
 // TodoApp
 //------------------------------------------------------------------------------
 class TodoApp extends Component {
-    constructor() {
-        super(...arguments);
+    setup() {
         this.state = useState({ filter: "all" });
         this.todos = useStore(state => state.todos);
         this.dispatch = useDispatch();
@@ -1026,8 +1016,7 @@ class FormView extends owl.Component {}
 FormView.components = { AdvancedComponent };
 
 class Chatter extends owl.Component {
-    constructor() {
-        super(...arguments);
+    setup() {
         this.messages = Array.from(Array(100).keys());
     }
 }
@@ -1170,8 +1159,7 @@ const SLOTS = `// We show here how slots can be used to create generic component
 const { Component, useState, mount } = owl;
 
 class Card extends Component {
-    constructor() {
-        super(...arguments);
+    setup() {
         this.state = useState({ showContent: true });
     }
 
@@ -1181,8 +1169,7 @@ class Card extends Component {
 }
 
 class Counter extends Component {
-    constructor() {
-        super(...arguments);
+    setup() {
         this.state = useState({val: 1});
     }
 
@@ -1193,8 +1180,7 @@ class Counter extends Component {
 
 // Main root component
 class App extends Component {
-    constructor() {
-        super(...arguments);
+    setup() {
         this.state = useState({a: 1, b: 3});
     }
 
@@ -1306,8 +1292,7 @@ class SlowComponent extends Component {
 class NotificationList extends Component {}
 
 class App extends Component {
-    constructor() {
-        super(...arguments);
+    setup() {
         this.state = useState({ value: 0, notifs: [] });
     }
 
@@ -1381,8 +1366,7 @@ const FORM = `// This example illustrate how the t-model directive can be used t
 const { Component, useState, mount } = owl;
 
 class Form extends Component {
-    constructor() {
-        super(...arguments);
+    setup() {
         this.state = useState({
             text: "",
             othertext: "",
@@ -1556,8 +1540,7 @@ const { useRef } = owl.hooks;
 class HelloWorld extends Component {}
 
 class Counter extends Component {
-  constructor() {
-    super(...arguments);
+  setup() {
     this.state = useState({ value: 0 });
   }
 
@@ -1610,8 +1593,7 @@ class Window extends Component {
 }
 
 class WindowManager extends Component {
-  constructor() {
-    super(...arguments);
+  setup() {
     this.windows = [];
     this.nextId = 1;
     this.currentZindex = 1;
@@ -1661,8 +1643,7 @@ class WindowManager extends Component {
 WindowManager.components = { Window };
 
 class App extends Component {
-  constructor() {
-    super(...arguments);
+  setup() {
     this.wmRef = useRef("wm");
   }
 

tools/release.js

@@ -3,9 +3,11 @@ const readline = require("readline");
 const fs = require("fs");
 const exec = require("child_process").exec;
 const chalk = require("chalk");
+const branchName = require('current-git-branch');
 
 const REL_NOTES_FILE = `release-notes.md`;
 const STEPS = 8;
+const branch = "master";
 
 const rl = readline.createInterface({
   input: process.stdin,
@@ -21,6 +23,19 @@ startRelease().then(() => {
 // -----------------------------------------------------------------------------
 
 async function startRelease() {
+  // First check we are on master
+  if (branchName() !== branch) {
+    logError(`You shall not pass! You are not on the ${branch} branch!`)
+    return;
+  }
+  
+  log("Check if code formatting is right...")
+  const checkFormatting = await execCommand("npm run check-formatting");
+  if (checkFormatting !== 0) {
+    logError("Prettier format validation failed. Aborting.");
+    return;
+  }
+
   log(`*** Owl release script ***`);
   log(`Current Version: ${package.version}`);
 
@@ -36,7 +51,7 @@ async function startRelease() {
     content = await readFile("./" + file);
   } catch (e) {
     logSubContent(e.message);
-    log("Cannot find release notes... Aborting");
+    logError("Cannot find release notes... Aborting");
     return;
   }
   let shouldBeDraft = await ask(`Should be a draft [y/n] ? (n)`);
@@ -45,12 +60,14 @@ async function startRelease() {
   {
     draft = "--draft";
   }
+  let shouldUploadPlayground = await ask(`Should this release be uploaded on the playground [y/n] ? (y)`);
+  shouldUploadPlayground = shouldUploadPlayground.toLowerCase() !== 'n';
 
   // ---------------------------------------------------------------------------
   log(`Step 2/${STEPS}: running tests...`);
   const testsResult = await execCommand("npm run test");
   if (testsResult !== 0) {
-    log("Test suite does not pass. Aborting.");
+    logError("Test suite does not pass. Aborting.");
     return;
   }
 
@@ -62,26 +79,27 @@ async function startRelease() {
 
   // ---------------------------------------------------------------------------
   log(`Step 4/${STEPS}: creating git commit...`);
-  const gitResult = await execCommand(`git commit -am "[REL] v${next}\n\n${content}"`);
+  const escapedContent = content.replace(/\"/g, '\\\"').replace(/\`/g, '\\\`');
+  const gitResult = await execCommand(`git commit -am "[REL] v${next}\n\n${escapedContent}"`);
   if (gitResult !== 0) {
-    log("Git commit failed. Aborting.");
+    logError("Git commit failed. Aborting.");
     return;
   }
 
   // ----------------------------------------------------------------------------
   log(`Step 5/${STEPS}: building owl...`);
-  await execCommand("npm run prettier");
+  await execCommand("rm -rf dist/");
   const buildResult = await execCommand("npm run build");
   if (buildResult !== 0) {
-    log("Build failed. Aborting.");
+    logError("Build failed. Aborting.");
     return;
   }
 
   // ---------------------------------------------------------------------------
   log(`Step 6/${STEPS}: pushing on github...`);
-  const pushResult = await execCommand("git push");
+  const pushResult = await execCommand("git push origin " + branch);
   if (pushResult !== 0) {
-    log("git push failed. Aborting.");
+    logError("git push failed. Aborting.");
     return;
   }
 
@@ -90,17 +108,51 @@ async function startRelease() {
   log(`Step 7/${STEPS}: Creating the release...`);
   const relaseResult = await execCommand(`gh release create v${next} dist/*.js ${draft} -F release-notes.md`);
   if (relaseResult !== 0) {
-    log("github release failed. Aborting.");
+    logError("github release failed. Aborting.");
     return;
   }
 
   log(`Step 8/${STEPS}: publishing module on npm...`);
   await execCommand("npm run publish");
-  
+
   log("Owl Release process completed! Thank you for your patience");
   await execCommand(`gh release view`);
   await execCommand(`gh release view -w`);
 
+  if (shouldUploadPlayground) {
+    log(`Bonus step: publishing new release on playground...`);
+    let owl_code = null;
+    status = 0
+
+    try {
+      owl_code = await readFile("dist/owl.iife.js");
+    } catch (e) {
+      logSubContent(e.message);
+      logError("Cannot read owl.iife.js... Aborting");
+      return;
+    }
+
+    status += await execCommand("git checkout gh-pages");
+    
+    if (status !== 0) {
+      logError("Couldn't switch to gh-pages branch")
+      return;
+    }
+
+    try {
+      fs.writeFileSync('owl.js', owl_code)
+    } catch (err) {
+      logError(err)
+      return;
+    }
+    
+    status += await execCommand(`git commit -am "[IMP] update owl to v${next}"`);
+    status += await execCommand(`git push origin gh-pages`);
+    status += await execCommand("git checkout -");
+    if (status !== 0) {
+      logError("Something went wrong for the playground update.")
+    }
+  }
 }
 
 // -----------------------------------------------------------------------------
@@ -111,6 +163,10 @@ function log(text) {
   console.log(chalk.yellow(formatLog(text)));
 }
 
+function logError(text) {
+  console.log(chalk.red(formatLog(text)));
+}
+
 function formatLog(text) {
   return `[REL] ${text}`;
 }