[REL] v1.0.0alpha5

Closes #473
Closes #484
Closes #489
Closes #492
Closes #512

Co-authored-by: Aaron Bohy <aab@odoo.com>

.gitignore

@@ -1,5 +1,6 @@
 /node_modules
 /dist
+
 npm-debug.log
 
 # misc
@@ -14,4 +15,12 @@ yarn-debug.log*
 yarn-error.log*
 
 package-lock.json
-.vscode
+
+#ide's
+.vscode
+.idea
+
+node_modules
+
+# Extras temp file
+/tools/owl.js

COPYRIGHT

@@ -0,0 +1,14 @@
+
+Most of the files are
+
+  Copyright (c) 2004-2015 Odoo S.A.
+
+Many files also contain contributions from third
+parties. In this case the original copyright of
+the contributions can be traced through the
+history of the source version control system.
+
+When that is not the case, the files contain a prominent
+notice stating the original copyright and applicable
+license, or come with their own dedicated COPYRIGHT
+and/or LICENSE file.

LICENSE

@@ -1,12 +1,9 @@
-
-For copyright information, please see the COPYRIGHT file.
-
-Odoo is published under the GNU LESSER GENERAL PUBLIC LICENSE, Version 3
+OWL is published under the GNU LESSER GENERAL PUBLIC LICENSE, Version 3
 (LGPLv3), as included below. Since the LGPL is a set of additional
 permissions on top of the GPL, the text of the GPL is included at the
 bottom as well.
 
-Some external libraries and contributions bundled with Odoo may be published
+Some external libraries and contributions bundled with OWL may be published
 under other GPL-compatible licenses. For these, please refer to the relevant
 source files and/or license files, in the source code tree.
 

README.md

@@ -1,120 +1,252 @@
-<h1 align="center">🦉 Odoo Web Lab 🦉</h1>
+<h1 align="center">🦉 <a href="https://odoo.github.io/owl/">Odoo Web Library</a> 🦉</h1>
+
+_Class based components with hooks, reactive state and concurrent mode_
 
 ## Project Overview
 
-Odoo Web Lab (OWL) is a project to collect some useful, reusable, (hopefully)
-well designed building blocks for building web applications. However, since this is the basis for the Odoo web client, we will not hesitate
-to design the code here to better match the Odoo architecture/design principles.
+The Odoo Web Library (OWL) is a smallish (~<20kb gzipped) UI framework intended to
+be the basis for the [Odoo](https://www.odoo.com/) Web Client. Owl is a modern
+framework, written in Typescript, taking the best ideas from React and Vue in a
+simple and consistent way. Owl's main features are:
 
-The most important element of this repository is certainly the component system.
-It is designed to be:
+- a declarative component system,
+- a reactivity system based on hooks,
+- a store implementation (for state management),
+- a small frontend router
 
-1. **declarative:** the user interface should be described in term of the state
-   of the application, not as a sequence of imperative steps.
+Owl components are defined with ES6 classes, they use QWeb templates, an underlying
+virtual dom, integrates beautifully with hooks, and the rendering is asynchronous.
 
-2. **composable:** each widget can seamlessly be created in a parent widget by
-   a simple directive in its template.
+**Try it online!** An online playground is available at [https://odoo.github.io/owl/playground](https://odoo.github.io/owl/playground) to let you experiment with the Owl framework. There
+are some code examples to showcase some interesting features.
 
-3. **asynchronous rendering:** the framework will transparently wait for each
-   subwidgets to be ready before applying the rendering. It uses native promises
-   under the hood.
+Owl is currently mostly stable.  Possible future changes are explained in the
+[roadmap](roadmap.md).
 
-4. **uses QWeb as a template system:** the templates are described in XML
-   and follow the QWeb specification. This is a requirement for Odoo.
+## Example
 
-5. **with an imperative escape hatch:** if necessary, sub widgets can easily be
-   manually created/destroyed.
-
-Note: the code is written in typescript. This does not mean that the main web
-client will ever be converted to typescript (even though I would really like it).
-
-## Installing/Building
-
-Some npm scripts are available:
-
-| Command            | Description                                               |
-| ------------------ | --------------------------------------------------------- |
-| npm install        | install every dependency required for this project        |
-| npm run build      | build a bundle of _owl_ in the _/dist/_ folder            |
-| npm run build:es5  | build a bundle of _owl_ in the _/dist/_ folder (ES5 code) |
-| npm run minify     | minify the prebuilt owl.js file                           |
-| npm run test       | run all tests                                             |
-| npm run test:watch | run all tests, and keep a watcher                         |
-
-## Documentation
-
-The complete documentation can be found [here](doc/readme.md). The most important sections are:
-
-- [Quick Start](doc/quick_start.md)
-- [Tutorial](doc/tutorial.md)
-- [Component](doc/component.md)
-- [QWeb](doc/qweb.md)
-
-# Examples
-
-Here is a minimal Hello World example:
+Here is a short example to illustrate interactive components:
 
 ```javascript
-class HelloWorld extends owl.core.Component {
-  inlineTemplate = `<div>Hello <t t-esc="props.name"/></div>`;
+const { Component, useState } = owl;
+const { xml } = owl.tags;
+
+class Counter extends Component {
+  static template = xml`
+    <button t-on-click="state.value++">
+      Click Me! [<t t-esc="state.value"/>]
+    </button>`;
+
+  state = useState({ value: 0 });
 }
 
-const env = {
-  qweb: new owl.core.QWeb()
-};
-
-const hello = new HelloWorld(env, { name: "World" });
-hello.mount(document.body);
-```
-
-The next example show how interactive widgets can be created and how widget
-composition works:
-
-```javascript
-class Counter extends owl.core.Component {
-  inlineTemplate = `
+class App extends Component {
+  static template = xml`
     <div>
-      <button t-on-click="increment(-1)">-</button>
-      <span style="font-weight:bold">Value: <t t-esc="state.value"/></span>
-      <button t-on-click="increment(1)">+</button>
+      <span>Hello Owl</span>
+      <Counter />
     </div>`;
 
-  constructor(parent, props) {
-    super(parent, props);
-    this.state = {
-      value: props.initialState || 0
-    };
-  }
-
-  increment(delta) {
-    this.updateState({ value: this.state.value + delta });
-  }
+  static components = { Counter };
 }
 
-class App extends owl.core.Component {
-  inlineTemplate = `
-    <div>
-        <t t-widget="Counter" t-props="{initialState: 1}"/>
-        <t t-widget="Counter" t-props="{initialState: 42}"/>
-    </div>`;
-
-  widgets = { Counter };
-}
-
-const env = {
-  qweb: new owl.core.QWeb()
-};
-
-const app = new App(env);
+const app = new App();
 app.mount(document.body);
 ```
 
-More interesting examples on how to work with this web framework can be found in the _examples/_ folder:
+Note that the counter component is made reactive with the [`useState` hook](doc/reference/hooks.md#usestate).
+Also, all examples here uses the [`xml` helper](doc/reference/tags.md#xml-tag) to define inline templates.
+But this is not mandatory, many applications will load templates separately.
 
-- [Todo Application](examples/readme.md#todo-app)
-- [Web Client](examples/readme.md#web-client-example)
-- [Benchmarks](examples/readme.md#benchmarks)
+More interesting examples can be found on the
+[playground](https://odoo.github.io/owl/playground) application.
+
+## Design Principles
+
+OWL is designed to be used in highly dynamic applications where changing
+requirements are common and code needs to be maintained by large teams.
+
+- **XML based**: templates are based on the XML format, which allows interesting
+  applications. For example, they could be stored in a database and modified
+  dynamically with `xpaths`.
+- **templates compilation in the browser**: this may not be a good fit for all
+  applications, but if you need to generate dynamically user interfaces in the
+  browser, this is very powerful. For example, a generic form view component
+  could generate a specific form user interface for each various models, from a XML view.
+- **no toolchain required**: this is extremely useful for some applications, if,
+  for various reasons (security/deployment/dynamic modules/specific assets tools),
+  it is not ok to use standard web tools based on `npm`.
+
+Owl is not designed to be fast nor small (even though it is quite good on those
+two topics). It is a no nonsense framework to build applications. There is only
+one way to define components (with classes).
+
+If you are interested in a comparison with React or Vue, you will
+find some more information [here](doc/comparison.md).
+
+## Documentation
+
+A complete documentation for Owl can be found here:
+
+- [Main documentation page](doc/readme.md).
+
+The most important sections are:
+
+- [Tutorial: TodoList application](doc/learning/tutorial_todoapp.md)
+- [QWeb templating language](doc/reference/qweb_templating_language.md)
+- [Component](doc/reference/component.md)
+- [Hooks](doc/reference/hooks.md)
+
+Found an issue in the documentation? A broken link? Some outdated information?
+Submit a PR!
+
+## Installing/Building
+
+If you want to use a simple `<script>` tag, the last release can be downloaded here:
+
+- [owl-1.0.0-alpha5.js](https://github.com/odoo/owl/releases/download/v1.0.0-alpha5/owl.js)
+- [owl-1.0.0-alpha5.min.js](https://github.com/odoo/owl/releases/download/v1.0.0-alpha5/owl.min.js)
+
+Some npm scripts are available:
+
+| Command          | Description                                        |
+| ---------------- | -------------------------------------------------- |
+| `npm install`    | install every dependency required for this project |
+| `npm run build`  | build a bundle of _owl_ in the _/dist/_ folder     |
+| `npm run minify` | minify the prebuilt owl.js file                    |
+| `npm run test`   | run all (owl) tests                                |
+
+## Quick Overview
+
+Owl components in an application are used to define a (dynamic) tree of components.
+
+```
+        Root
+        /   \
+       A     B
+      / \
+     C   D
+```
+
+**State:** each component can manage its own local state. It is a simple ES6
+class, there are no special rules:
+
+```js
+class Counter extends Component {
+  static template = xml`
+    <button t-on-click="increment">
+      Click Me! [<t t-esc="state.value"/>]
+    </button>`;
+
+  state = { value: 0 };
+
+  increment() {
+    this.state.value++;
+    this.render();
+  }
+}
+```
+
+The example above shows a component with a local state. Note that since there
+is nothing magical to the `state` object, we need to manually call the `render`
+function whenever we update it. This can quickly become annoying (and not
+efficient if we do it too much). There is a better way: using the `useState`
+hook, which transforms an object into a reactive version of itself:
+
+```js
+const { useState } = owl.hooks;
+
+class Counter extends Component {
+  static template = xml`
+    <button t-on-click="increment">
+      Click Me! [<t t-esc="state.value"/>]
+    </button>`;
+
+  state = useState({ value: 0 });
+
+  increment() {
+    this.state.value++;
+  }
+}
+```
+
+Note that the `t-on-click` handler can even be replaced by an inline statement:
+
+```xml
+    <button t-on-click="state.value++">
+```
+
+**Props:** sub components often needs some information from their parents. This
+is done by adding the required information to the template. This will then be
+accessible by the sub component in the `props` object. Note that there is an
+important rule here: the information contained in the `props` object is not
+owned by the sub component, and should never be modified.
+
+```js
+class Child extends Component {
+  static template = xml`<div>Hello <t t-esc="props.name"/></div>`;
+}
+
+class Parent extends Component {
+  static template = xml`
+    <div>
+        <Child name="'Owl'" />
+        <Child name="'Framework'" />
+    </div>`;
+  static components = { Child };
+}
+```
+
+**Communication:** there are multiple ways to communicate information between
+components. However, the two most important ways are the following:
+
+- from parent to children: by using `props`,
+- from a children to one of its parent: by triggering events.
+
+The following example illustrate both mechanisms:
+
+```js
+class OrderLine extends Component {
+  static template = xml`
+    <div t-on-click="add">
+        <div><t t-esc="props.line.name"/></div>
+        <div>Quantity: <t t-esc="props.line.quantity"/></div>
+    </div>`;
+
+  add() {
+    this.trigger("add-to-order", { line: props.line });
+  }
+}
+
+class Parent extends Component {
+  static template = xml`
+    <div t-on-add-to-order="addToOrder">
+        <OrderLine
+            t-foreach="orders"
+            t-as="line"
+            line="line" />
+    </div>`;
+  static components = { OrderLine };
+  orders = useState([{ id: 1, name: "Coffee", quantity: 0 }, { id: 2, name: "Tea", quantity: 0 }]);
+
+  addToOrder(event) {
+    const line = event.detail.line;
+    line.quantity++;
+  }
+}
+```
+
+In this example, the `OrderLine` component trigger a `add-to-order` event. This
+will generate a DOM event which will bubble along the DOM tree. It will then be
+intercepted by the parent component, which will then get the line (from the
+`detail` key) and then increment its quantity. See the section on [event handling](doc/reference/component.md#event-handling)
+for more details on how events work.
+
+Note that this example would have also worked if the `OrderLine` component
+directly modifies the `line` object. However, this is not a good practice: this
+only works because the `props` object received by the child component is reactive,
+so the child component is then coupled to the parents implementation.
 
 ## License
 
-React is [GPL licensed](./LICENSE).
+OWL is [LGPL licensed](./LICENSE).

doc/architecture/rendering.md

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+# 🦉 Rendering Pipeline 🦉
+
+We explain here how Owl is designed, from the perspective of its rendering
+pipeline.
+
+Warning: these notes are technical by nature, and intended for people working
+on Owl (or interested in understanding its design).
+
+## Overview
+
+A rendering occurs in two phases:
+
+- virtual rendering: this generates the virtual dom in memory, asynchronously
+- patch: applies a virtual tree to the screen (synchronously)
+
+There are several classes involved in a rendering:
+
+- components
+- a scheduler
+- fibers: small objects containing some metadata, associated with a rendering of
+  a specific component
+
+Components are organized in a dynamic component tree, visible in the user
+interface. Whenever a rendering is initiated in a component `C`:
+
+- a fiber is created on `C` with the rendering props information
+- the virtual rendering phase starts on C (will asynchronously render all the
+  child components)
+- the fiber is added to the scheduler, which will poll continuously, every
+  animation frame, if the fiber is done
+- once it is done, the scheduler will call the task callback, which will apply
+  the patch (if it was not cancelled in the meantime).

doc/architecture/vdom.md

@@ -0,0 +1,18 @@
+# 🦉 VDom 🦉
+
+Owl is a declarative component system: we declare the structure of the component
+tree, and Owl will translate that to a list of imperative operations. This
+translation is done by a virtual dom. This is the low level layer of Owl, most
+developer will not need to call directly the virtual dom functions.
+
+The main idea behind a virtual dom is to keep a in-memory representation of the
+DOM (called a virtual node), and whenever some change is needed, to regenerate
+a new representation, compute the difference between the old and the new, then
+apply the changes.
+
+`vdom` exports two functions:
+
+- `h`: create a new virtual node
+- `patch`: compare two virtual nodes, and apply the difference.
+
+Note: Owl's virtual dom is a fork of [snabbdom](https://github.com/snabbdom/snabbdom).

doc/comparison.md

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+# Comparison with Vue/React
+
+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
+discussed, feel free to open an issue/submit a PR to correct this text.
+
+## Content
+
+- [Size](#size)
+- [Class Based](#class-based)
+- [Tooling/Build Step](#toolingbuild-step)
+- [Templating](#templating)
+- [Asynchronous rendering](#asynchronous-rendering)
+- [Reactiveness](#reactiveness)
+- [State Management](#state-management)
+- [Hooks](#hooks)
+
+## Size
+
+OWL is intended to be small and to work at a slightly lower level of abstraction
+than React and Vue. Also, jQuery is not the same kind of framework, but it is interesting to compare.
+
+| Framework                | Size (minified, gzipped) |
+| ------------------------ | ------------------------ |
+| OWL                      | 18kb                     |
+| Vue + VueX               | 30kb                     |
+| Vue + VueX + Vue Router  | 39kb                     |
+| React + ReactDOM + Redux | 40kb                     |
+| jQuery                   | 30kb                     |
+
+Note that those comparisons are not entirely fair, because we do not compare
+the same exact set of features. For example, VueX and Vue Router support more
+advanced use cases.
+
+## Class Based
+
+Both React and Vue moved away from defining components with classes. They prefer
+a more functional approach, in particular, with the new `hooks` mechanisms.
+
+This has some advantages and disadvantages. But the end result is that React
+and Vue both offers multiple different ways of defining new components. In
+contrast, Owl has only one mechanism: class-based components. We believe that Owl
+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,
+both of these are important mechanisms for reusing code. Also, one does not
+exclude the other.
+
+It certainly looks like the world of UI frameworks is moving toward composition,
+for many very good reasons. Owl is still good at composition (for example,
+Owl supports slots, which is the primary mechanism to make generic reusable
+components). But it can also use inheritance (and this is very important since
+templates can also be inherited with `xpaths` transformations).
+
+## Tooling/Build step
+
+OWL is designed to be easy to use in a standalone way. For various reasons,
+Odoo does not want to rely on standard web tools (such as webpack), and OWL can
+be used by simply adding a script tag to a page.
+
+```html
+<script src="owl.min.js" />
+```
+
+In comparison, React encourages using JSX, which necessitate a build step, and
+most Vue applications uses single file components, which also necessitate a build step.
+
+On the flipside, external tooling may make it harder to use in some case, but it
+also brings a lot of benefits. And React/Vue have both a large ecosystem.
+
+Note that since Owl is not dependant on any external tool nor libraries, it is
+very easy to integrate into any build toolchain. Also, since we cannot rely on
+additional tools, we made a lot of effort to make the most of the web platform.
+
+For example, Owl uses the standard `xml` parser that comes with every browser.
+Because of that, Owl did not have to write its own template parser. Another
+example is the [`xml`](reference/tags.md#xml-tag) tag helper function, which makes use of
+native template literals to allow in a natural way to write `xml` templates
+directly in the javascript code. This can be easily integrated with editor
+plugins to have autocompletion inside the template.
+
+## Templating
+
+OWL uses its own QWeb engine, which compiles templates on the
+frontend, as they are needed. This is extremely convenient for our use case, in
+particular because templates are described in XML files, and can be modified by
+XPaths. Since Odoo is at its heart a modular application, this is an important
+feature for us.
+
+```xml
+<div>
+  <button t-on-click="increment">Click Me! [<t t-esc="state.value"/>]</button>
+</div>
+```
+
+Vue is actually kind of similar. Its template language is kind of close to QWeb,
+with the `v` replaced by the `t`. However, it is also more fully featured. For
+example, Vue templates have slots, or event modifiers. A large difference is that
+most Vue applications will need to be built ahead of time, to compile the templates
+into javascript functions. Note that Vue has a separate build which includes the
+template compiler.
+
+In contrast, most React applications do not use a templating language, but write
+some JSX code, which is precompiled into plain JavaScript by a build step. This
+example is done with the (kind of outdated) React class system:
+
+```jsx
+class Clock extends React.Component {
+  render() {
+    return (
+      <div>
+        <h1>Hello, world!</h1>
+        <h2>It is {this.props.date.toLocaleTimeString()}.</h2>
+      </div>
+    );
+  }
+}
+```
+
+This has the advantage of having the full power of Javascript, but is less
+structured than a template language. Note that the tooling is quite impressive:
+there is a syntax highlighter for jsx here on github!
+
+By comparison, here is the equivalent Owl component, written with the
+[`xml`](reference/tags.md#xml-tag) tag helper:
+
+```js
+class Clock extends Component {
+  static template = xml`
+      <div>
+        <h1>Hello, world!</h1>
+        <h2>It is {props.date.toLocaleTimeString()}.</h2>
+      </div>
+    `;
+}
+```
+
+## Asynchronous Rendering
+
+This is actually a big difference between OWL and React/Vue: components in OWL
+are totally asynchronous. They have two asynchronous hooks in their lifecycle:
+
+- `willStart` (before the component starts rendering)
+- `willUpdateProps` (before new props are set)
+
+Both these methods can be implemented and return a promise. The rendering will
+then wait for these promises to be completed before patching the DOM. This is
+useful for some use cases: for example, a component may want to fetch an external
+library (a calendar component may need a specialized calendar rendering library),
+in its willStart hook.
+
+```javascript
+class MyCalendarComponent extends owl.Component {
+    ...
+
+    willStart() {
+        return utils.lazyLoad('static/libs/fullcalendar/fullcalendar.js');
+    }
+    ...
+}
+```
+
+This may be dangerous (to stop the rendering waiting for the network), but it is
+extremely powerful as well, as demonstrated by the Odoo Web Client.
+
+Lazy loading static libraries can obviously be done with React/Vue, but it is
+more convoluted. For example, in Vue, you need to use a dynamic import keyword
+that needs to be transpiled at build time in order for the component to be loaded
+asynchronously (see [the documentation](https://vuejs.org/v2/guide/components-dynamic-async.html#Async-Components)).
+
+## Reactiveness
+
+React has a simple model: whenever the state changes, it is
+replaced with a new state (via the `setState` method). Then, the DOM is patched.
+This is simple, efficient, and a little bit awkward to write.
+
+Vue is a little bit different: it replace magically the properties in the state
+by getters/setters. With that, it can notify components whenever the state that
+they read was changed.
+
+Owl is closer to vue: it also tracks magically the state properties, but it does
+only increment an internal counter whenever it changes. Note that it is done
+with a `Proxy`, which means that it is totally transparent to the developers.
+Adding new keys is supported. Once any part of the state has been changed, a
+rendering is scheduled in the next microtask tick (promise queue).
+
+## State Management
+
+Managing the state of an application is a tricky issue. Many solutions have
+been proposed these last few years. It also depends on the kind of application we
+are talking about. A small application may not need much more than a simple
+object to contain its state.
+
+However, there are some common solutions for React and Vue: redux and vuex.
+Both of them are a centralized store that own the state, and they dictate how
+the state can be mutated.
+
+**Redux**
+
+In Redux, the state is mutated by reducers. Reducers are functions
+that modify the state by returning a different object:
+
+```javascript
+  ...
+  switch (action.type) {
+    case ADD_TODO: {
+      const { id, content } = action.payload;
+      return {
+        ...state,
+        allIds: [...state.allIds, id],
+        byIds: {
+          ...state.byIds,
+          [id]: {
+            content,
+            completed: false
+          }
+        }
+      };
+    }
+```
+
+This is a little bit awkward to write, but this allows the component system to
+check if a part of the state was changed. This is exactly what is done by the
+`connect` function: it create a _connected_ component, which is subscribed to
+the state and triggers a rerender if some part of the state was modified.
+
+**VueX**
+
+VueX is based on a different principle: the state is mutated through
+some special functions (the mutations), which modify the state in place:
+
+```javascript
+    function ({state}, payload) {
+        const { id, content } = payload;
+        const message = {id, content, completed: false};
+        state.messages.push(message)
+    }
+```
+
+This is simpler, but there is a little bit more happening behind the scene:
+each key from the state is silently replaced by getters and setters, and VueX
+keeps track of who get data, and retrigger a render when it was changed.
+
+**Owl**
+
+Owl store is a little bit like a mix of redux and vuex: it has actions (but not
+mutations), and like VueX, it keeps track of the state changes. However, it does
+not notify a component when the state changes. Instead, components need to connect
+to the store like in redux, with the `useStore` hook (see the [store documentation](reference/store.md#connecting-a-component)).
+
+```javascript
+const actions = {
+  increment({ state }, val) {
+    state.counter.value += val;
+  }
+};
+
+const state = {
+  counter: { value: 0 }
+};
+const store = new owl.Store({ state, actions });
+
+class Counter extends Component {
+  static template = xml`
+      <button t-name="Counter" t-on-click="dispatch('increment')">
+        Click Me! [<t t-esc="counter.value"/>]
+      </button>`;
+  counter = useStore(state => state.counter);
+  dispatch = useDispatch();
+}
+
+Counter.env.store = store;
+const counter = new Counter();
+```
+
+## Hooks
+
+[Hooks](https://reactjs.org/docs/hooks-intro.html#motivation) recently took over
+the React world. They solve a lot of seemingly unconnected problems: attach
+reusable behavior to a component, in a composable way, extract stateful logic
+from a component or reuse stateful logic between component, without changing your
+component hierarchy.
+
+Here is an example of the React `useState` hook:
+
+```js
+import React, { useState } from "react";
+
+function Example() {
+  // Declare a new state variable, which we'll call "count"
+  const [count, setCount] = useState(0);
+
+  return (
+    <div>
+      <p>You clicked {count} times</p>
+      <button onClick={() => setCount(count + 1)}>Click me</button>
+    </div>
+  );
+}
+```
+
+Because of the way React designed the hooks API, they only work for functional
+components. But in that case, they really are powerful. Every major React library
+is in the process of redesigning their API with hooks (for example,
+[Redux](https://react-redux.js.org/next/api/hooks)).
+
+Vue 2 does not have hooks, but the Vue project is working on its next version,
+which will feature its new [composition API](https://vue-composition-api-rfc.netlify.com/).
+This work is based on the new ideas introduced by React hooks.
+
+From the way React and Vue introduce their hooks, it may look like hooks are not
+compatible with class components. However, this is not the case, as shown by
+Owl [hooks](reference/hooks.md). They are inspired by both React and Vue. For example,
+the `useState` hook is named after React, but its API is closer to the `reactive`
+Vue hook.
+
+Here is what the `Counter` example above look like in Owl:
+
+```js
+import { Component, Owl } from "owl";
+import { xml } from "owl/tags";
+
+class Example extends Component {
+  static template = xml`
+      <div>
+        <p>You clicked {count.value} times</p>
+        <button t-on-click="increment">Click me</button>
+      </div>`;
+
+  count = useState({ value: 0 });
+
+  increment() {
+    this.state.value++;
+  }
+}
+```
+
+Since the Owl framework had hooks from early in its life, its main APIs
+are designed to be interacted with hooks from the start. For example, the
+`Context` and `Store` abstractions.

doc/component.md

@@ -1,30 +0,0 @@
-# Component
-
-Components are the reusable, composable widgets. They are designed to be low
-level, to be declarative, and with asynchronous rendering.
-
-For example:
-
-```javascript
-export class Counter extends Component {
-  inlineTemplate = `
-    <div t-name="counter">
-      <button t-on-click="increment(-1)">-</button>
-      <span style="font-weight:bold">Value: <t t-esc="state.counter"/></span>
-      <button t-on-click="increment(1)">+</button>
-    </div>`;
-
-  state = {
-    counter: 0
-  };
-
-  constructor(parent, props) {
-    super(parent, props);
-    this.state.counter = props.initialState || 0;
-  }
-
-  increment(delta) {
-    this.updateState({ counter: this.state.counter + delta });
-  }
-}
-```

doc/learning/quick_start.md

@@ -0,0 +1,107 @@
+# 🦉 Quick Start 🦉
+
+## Static Server
+
+Let us assume that we have a static server running somewhere. Let us start by
+adding an html page with a few extra files:
+
+```
+my-app/
+    index.html
+    app.css
+    app.js
+    owl-X.Y.Z.js
+    templates.xml
+```
+
+### HTML and CSS
+
+In a file `index.html`:
+
+```html
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <title>My OWL App</title>
+    <link href="app.css" rel="stylesheet" />
+    <script src="owl-X.Y.Z.js"></script>
+  </head>
+  <body>
+    <div id="main"></div>
+    <script src="app.js" type="module"></script>
+  </body>
+</html>
+```
+
+In `app.css`:
+
+```css
+button {
+  color: darkred;
+  font-size: 30px;
+  width: 220px;
+}
+```
+
+Also, let's not forget to add a release of OWL (`owl-X.Y.Z.js`)
+
+### XML
+
+In `templates.xml`:
+
+```xml
+<templates>
+   <button t-name="clickcounter" t-on-click="increment">
+      Click Me! [<t t-esc="state.value"/>]
+    </button>
+</templates>
+```
+
+### JS
+
+To build an application (or a sub-part of an application), we need two things:
+
+- an environment: it is the global context in which we are working. It needs to
+  contain a QWeb instance (preloaded with templates), and anything else that we
+  need. In practice, it could be used to contain some user session information, some
+  configuration keys (for example, isMobile = true/false if we are in mobile mode).
+
+- a description of the user interface: there should be a root component, which can
+  have sub components
+
+Here are a few steps that we may take to get started:
+
+- get the templates
+- create a qweb engine, with the templates
+- create an environment
+- create an instance of the root component
+- mount the root component to a DOM element
+
+Let us now add the javascript to make it work, in `app.js`:
+
+```javascript
+const useState = owl.hooks.useState;
+
+class ClickCounter extends owl.Component {
+  static template = "clickcounter";
+  state = useState({ value: 0 });
+
+  increment() {
+    this.state.value++;
+  }
+}
+
+//------------------------------------------------------------------------------
+// Application initialization
+//------------------------------------------------------------------------------
+async function start() {
+  const templates = await owl.utils.loadFile("templates.xml");
+  ClickCounter.env = { qweb: new owl.QWeb({ templates }) };
+  const counter = new ClickCounter();
+  const target = document.getElementById("main");
+  await counter.mount(target);
+}
+
+start();
+```

doc/learning/testing_components.md

@@ -0,0 +1,211 @@
+# 🦉 Testing and Debugging Owl components 🦉
+
+## Content
+
+- [Overview](#overview)
+- [Unit Tests](#unit-tests)
+- [Debugging](#debugging)
+
+## Overview
+
+It is a good practice to test applications and components to ensure that they
+behave as expected. There are many ways to test a user interface: manual
+testing, integration testing, unit testing, ...
+
+In this section, we will discuss how to write unit tests for components, and
+how to debug them if necessary.
+
+## Unit Tests
+
+Writing unit tests for Owl components really depends on the testing framework
+used in a project. But usually, it involves the following steps:
+
+- create a test file: for example `SomeComponent.test.js`,
+- in that file, import the code for `SomeComponent`,
+- add a test case:
+  - create a real DOM element to use as test fixture,
+  - create a test environment
+  - create an instance of `SomeComponent`, mount it to the fixture
+  - interact with the component and assert some properties.
+
+To help with this, it is useful to have a `helper.js` file that contains some
+common utility functions:
+
+```js
+export function makeTestFixture() {
+  let fixture = document.createElement("div");
+  document.body.appendChild(fixture);
+  return fixture;
+}
+
+export function nextTick() {
+  let requestAnimationFrame = owl.Component.scheduler.requestAnimationFrame;
+  return new Promise(function(resolve) {
+    setTimeout(() => requestAnimationFrame(() => resolve()));
+  });
+}
+
+export function makeTestEnv() {
+    // application specific. It needs a way to load actual templates
+    const templates = ...;
+
+    return {
+        qweb: new QWeb(templates),
+        ..., // each service can be mocked here
+    };
+}
+```
+
+With such a file, a typical test suite for Jest will look like this:
+
+```js
+// in SomeComponent.test.js
+import { SomeComponent } from "../../src/ui/SomeComponent";
+import { nextTick, makeTestFixture, makeTestEnv} from '../helpers';
+
+
+//------------------------------------------------------------------------------
+// Setup
+//------------------------------------------------------------------------------
+let fixture: HTMLElement;
+let env: Env;
+
+beforeEach(() => {
+  fixture = makeTestFixture();
+  env = makeTestEnv();
+  // we set here the default environment for each component created in the test
+  Component.env = env;
+});
+
+afterEach(() => {
+  fixture.remove();
+});
+
+//------------------------------------------------------------------------------
+// Tests
+//------------------------------------------------------------------------------
+describe("SomeComponent", () => {
+  test("component behaves as expected", async () => {
+    const props = {...}; // depends on the component
+    const comp = new SomeComponent(null, props);
+    await comp.mount(fixture);
+
+    // do some assertions
+    expect(...).toBe(...);
+
+    fixture.querySelector('button').click();
+    await nextTick();
+
+    // some other assertions
+    expect(...).toBe(...);
+  });
+});
+```
+
+Note that Owl does wait for the next animation frame to actually update the DOM.
+This is why it is necessary to wait with the `nextTick` (or other methods) to
+make sure that the DOM is up-to-date.
+
+It is sometimes useful to wait until Owl is completely done updating components
+(in particular, if we have a highly concurrent user interface). This next
+helper simply polls every 20ms the internal Owl task queue and returns a promise
+which resolves when it is empty:
+
+```js
+function afterUpdates() {
+  return new Promise((resolve, reject) => {
+    let timer = setTimeout(poll, 20);
+    let counter = 0;
+    function poll() {
+      counter++;
+      if (owl.Component.scheduler.tasks.length) {
+        if (counter > 10) {
+          reject(new Error("timeout"));
+        } else {
+          timer = setTimeout(poll);
+        }
+      } else {
+        resolve();
+      }
+    }
+  });
+}
+```
+
+## Debugging
+
+Non trivial applications become quickly more difficult to understand. It is then
+useful to have a solid understanding of what is going on. To help with that,
+the following code can simply be copy/pasted in an application. Once it is
+executed, it will log a lot of information on each component main hooks.
+
+```js
+let current;
+Object.defineProperty(owl.Component, "current", {
+  get() {
+    return current;
+  },
+  set(comp) {
+    current = comp;
+    const name = comp.constructor.name;
+    let __owl__;
+    Object.defineProperty(current, "__owl__", {
+      get() {
+        return __owl__;
+      },
+      set(val) {
+        __owl__ = val;
+        debugComponent(comp, name, __owl__.id);
+      }
+    });
+  }
+});
+
+function toStr(props) {
+  let str = JSON.stringify(props || {});
+  if (str.length > 200) {
+    str = str.slice(0, 200) + "...";
+  }
+  return str;
+}
+
+function debugComponent(component, name, id) {
+  console.log(`[DEBUG] constructor ${name}<id=${id}>, props=${toStr(component.props)}`);
+  owl.hooks.onWillStart(() => {
+    console.log(`[DEBUG] willStart: '${name}<id=${id}>'`);
+  });
+  owl.hooks.onMounted(() => {
+    console.log(`[DEBUG] mounted: '${name}<id=${id}>'`);
+  });
+  owl.hooks.onWillUpdateProps(nextProps => {
+    console.log(`[DEBUG] willUpdateProps: '${name}<id=${id}> nextprops=${toStr(nextProps)}`);
+  });
+  owl.hooks.onWillPatch(() => {
+    console.log(`[DEBUG] willPatch: '${name}<id=${id}>'`);
+  });
+  owl.hooks.onPatched(() => {
+    console.log(`[DEBUG] patched: '${name}<id=${id}>'`);
+  });
+  owl.hooks.onWillUnmount(() => {
+    console.log(`[DEBUG] willUnmount: '${name}<id=${id}>'`);
+  });
+  const __render = component.__render.bind(component);
+  component.__render = function(...args) {
+    console.log(`[DEBUG] rendering template: '${name}<id=${id}>'`);
+    __render(...args);
+  };
+  const render = component.render.bind(component);
+  component.render = function(...args) {
+    console.log(`[DEBUG] render: '${name}<id=${id}>'`);
+    return render(...args);
+  };
+  const mount = component.mount.bind(component);
+  component.mount = function(...args) {
+    console.log(`[DEBUG] mount: '${name}<id=${id}>'`);
+    return mount(...args);
+  };
+}
+```
+
+Note that it is certainly useful to run this code at some point in an application,
+just to get a feel of what each user action implies, for the framework.

doc/quick_start.md

@@ -1,61 +0,0 @@
-# Quick Start
-
-To build an application (or a sub-part of an application), we need two things:
-
-- an environment
-- a root widget
-
-Here are a few steps that may be useful to get started:
-
-- get the templates
-- create a qweb engine, with the templates
-- create an environment
-- create an instance of the root widget
-- mount the root widget to a DOM element
-
-## Simple example
-
-In a oversimplified example, here is what it could look like:
-
-```javascript
-const templates = await loadTemplates();
-
-const qweb = new QWeb();
-qweb.loadTemplates(templates);
-
-const env = {
-  qweb: qweb
-};
-
-const root = new RootWidget(env, { initialState: 17 });
-
-const target = document.getElementById("app");
-root.mount(target);
-```
-
-## Managing state
-
-The environment is propagated to each subchildren. So, it is convenient to use
-to give a reference to some global object. This is potentially very useful
-in a redux-like architecture:
-
-```javascript
-...
-
-const store = new Store();
-
-const env = {
-    qweb: qweb,
-    store: store,
-};
-
-const state = store.getState()
-const root = new RootWidget(env, state);
-
-store.on('state_change', nextState => {
-    root.updateProps(nextState);
-});
-
-const target = document.getElementById('app');
-root.mount(target);
-```

doc/qweb.md

@@ -1,35 +0,0 @@
-# QWeb
-
-QWeb is a template specification. The QWeb class in this repository is:
-
-- an implementation of the QWeb specification
-- which outputs a virtual dom instead of a string
-- and extended with a few extra directives
-
-## QWeb Specification
-
-add here a full description of what QWeb is supposed to be, with some examples
-
-## QWeb Implementation
-
-```javascript
-var qweb = new QWeb();
-qweb.addTemplate("sometemplate", '<div>hello <t t-esc="name"/></div>');
-
-// result is a vnode which represent <div>hello world</div>
-result = qweb.render("sometemplate", { name: "world" });
-```
-
-## QWeb extensions
-
-- t-on directive
-- t-widget, t-props, t-key
-- t-ref
-
-## Note on white spaces
-
-White spaces in a templates are handled in a special way:
-
-- consecutive whitespaces are always condensed to a single whitespace
-- if a whitespace-only text node contains a linebreak, it is ignored
-- the previous rules do not apply if we are in a `<pre>` tag

doc/readme.md

@@ -1,22 +1,75 @@
-# Odoo Web Lab Documentation
+# 🦉 OWL Documentation 🦉
 
-Currently, this repository contains:
+## Reference
 
-1. **core**
+- [Animations](reference/animations.md)
+- [Component](reference/component.md)
+- [Configuration](reference/config.md)
+- [Context](reference/context.md)
+- [Environment](reference/environment.md)
+- [Event Bus](reference/event_bus.md)
+- [Hooks](reference/hooks.md)
+- [Miscellaneous Components](reference/misc.md)
+- [Observer](reference/observer.md)
+- [Props](reference/props.md)
+- [QWeb Templating Language](reference/qweb_templating_language.md)
+- [QWeb Engine](reference/qweb_engine.md)
+- [Router](reference/router.md)
+- [Store](reference/store.md)
+- [Tags](reference/tags.md)
+- [Utils](reference/utils.md)
 
-   - an implementation/extension of the QWeb template engine that outputs a virtual
-     dom (using the snabbdom library)
-   - a Component class, which uses the QWeb engine as its underlying rendering
-     mechanism. The component class is designed to be declarative, with
-     asynchronous rendering. Also, it uses snabbdom as the virtual dom library.
-   - some utility functions/classes
+## Learning Resources
 
-2. **extras**
-   - a Store class and a connect function, to help manage the state of an application (like react-redux)
-   - a Registry: this is a simple key/store mapping
+- [Quick Start: create an (almost) empty Owl application](learning/quick_start.md)
+- [Tutorial: create a TodoList application](learning/tutorial_todoapp.md)
+- [Testing and Debugging Owl components](learning/testing_components.md)
 
-- [Quick Start](quick_start.md)
-- [Tutorial](tutorial.md)
-- [Component](component.md)
-- [QWeb](qweb.md)
-- [State Management](state_management.md)
+## Miscellaneous
+
+- [Comparison with React/Vue](comparison.md)
+- [Tooling](tooling.md)
+- [Templates to start Owl applications (external link)](https://github.com/ged-odoo/owl-templates)
+
+## Architecture
+
+This section explains in more detail the inner workings of Owl. It is targeted
+for developers working on Owl itself.
+
+- [Virtual DOM](architecture/vdom.md)
+- [Rendering](architecture/rendering.md)
+
+## Owl Content
+
+Here is a complete visual representation of everything exported by the `owl`
+global object (so, for example, `Component` is available at `owl.Component`,
+and `EventBus` is exported as `owl.core.EventBus`):
+
+```
+Component                               misc
+Context                                     AsyncRoot
+QWeb                                    router
+Store                                       Link
+useState                                    RouteComponent
+config                                      Router
+    mode                                tags
+core                                        xml
+    EventBus                            utils
+    Observer                                debounce
+hooks                                       escape
+    onWillStart                             loadJS
+    onMounted                               loadFile
+    onWillUpdateProps                       shallowEqual
+    onWillPatch                             whenReady
+    onPatched
+    onWillUnmount
+    useContext
+    useState
+    useRef
+    useSubEnv
+    useStore
+    useDispatch
+    useGetters
+```
+
+Note that for convenience, the `useState` hook is also exported at the root of the `owl` object.

doc/reference/animations.md

@@ -0,0 +1,95 @@
+# 🦉 Animations 🦉
+
+Animation is a complex topic. There are many different use cases, and many
+solutions and technologies. Owl only supports some basic use cases.
+
+## Simple CSS effects
+
+Sometimes, using pure CSS is enough. For these use cases, Owl is not really
+necessary: it just needs to render a DOM element with a specific class. For
+example:
+
+```xml
+<a class="btn flash" t-on-click="doSomething">Click</a>
+```
+
+with the following CSS:
+
+```css
+btn {
+  background-color: gray;
+}
+
+.flash {
+  transition: background 0.5s;
+}
+
+.flash:active {
+  background-color: #41454a;
+  transition: background 0s;
+}
+```
+
+will produce a nice flash effect whenever the user clicks (or activates with the
+keyboard) the button.
+
+## CSS Transitions
+
+A more complex situation occurs when we want to transition an element in or out
+of the page. For example, we may want a fade-in and fade-out effect.
+
+The `t-transition` directive is here to help us. It works on html elements and
+on components, by adding and removing some css classes.
+
+To perform useful transition effects, whenever an element appears or disappears,
+it is necessary to add/remove some css style or class at some precise moment in
+the lifetime of a node. Since this is not easy to do by hand, Owl `t-transition`
+directive is there to help.
+
+Whenever a node has a `t-transition` directive, with a `name` value, the following
+sequence of events will happen:
+
+At node insertion:
+
+- the css classes `name-enter` and `name-enter-active` will be added directly
+  when the node is inserted into the DOM,
+- on the next animation frame: the css class `name-enter` will be removed and the
+  class `name-enter-to` will be added (so they can be used to trigger css
+  transition effects),
+- the css class `name-enter-active` will be removed whenever a css transition
+  ends.
+
+At node destruction:
+
+- the css classes `name-leave` and `name-leave-active` will be added before the
+  node is removed to the DOM,
+- the css class `name-leave` will be removed on the next animation frame (so it
+  can be used to trigger css transition effects),
+- the css class `name-leave-active` will be removed whenever a css transition
+  ends. Only then will the element be removed from the DOM.
+
+For example, a simple fade in/out effect can be done with this:
+
+```xml
+<div>
+    <div t-if="state.flag" class="square" t-transition="fade">Hello</div>
+</div>
+```
+
+```css
+.fade-enter-active,
+.fade-leave-active {
+  transition: opacity 0.5s;
+}
+.fade-enter,
+.fade-leave-to {
+  opacity: 0;
+}
+```
+
+The `t-transition` directive can be applied on a node element or on a component.
+
+Notes:
+
+Owl does not support more than one transition on a single node, so the
+`t-transition` expression must be a single value (i.e. no space allowed).

doc/reference/config.md

@@ -0,0 +1,27 @@
+# 🦉 Config 🦉
+
+The Owl framework is designed to work in many situations. However, it is
+sometimes necessary to customize some behaviour. This is done by using the
+global `config` object. It currently has one key:
+
+- [`mode`](#mode).
+
+## Mode
+
+By default, Owl is in _production_ mode, this means that it will try to do its
+job fast, and skip some expensive operations. However, it is sometimes necessary
+to have better information on what is going on, this is the purpose
+of the `dev` mode.
+
+Owl has a mode flag, in `owl.config.mode`. Its default value is `prod`, but
+it can be set to `dev`:
+
+```js
+owl.config.mode = "dev";
+```
+
+Note that templates compiled with the `prod` settings will not be recompiled.
+So, changing this setting is best done at startup.
+
+An important job done by the `dev` mode is to validate props for each component
+creation and update. Also, extra props will cause an error.

doc/reference/context.md

@@ -0,0 +1,105 @@
+# 🦉 Context 🦉
+
+## Content
+
+- [Overview](#overview)
+- [Example](#example)
+- [Reference](#reference)
+  - [`Context`](#context)
+  - [`useContext`](#usecontext)
+
+## Overview
+
+The `Context` object provides a way to share data between an arbitrary number
+of components. Usually, data is passed from a parent to its children component,
+but when we have to deal with some mostly global information, this can be
+annoying, since each component will need to pass the information to each children,
+even though some or most of them will not use the information.
+
+With a `Context` object, each component can subscribe (with the `useContext` hook)
+to its state, and will be updated whenever the context state is updated.
+
+## Example
+
+Assume that we have an application with various components which needs to render
+differently depending on the size of the device. Here is how we could proceed
+to make sure that the information is properly shared. First, let us create a
+context, and add it to the environment:
+
+```js
+const deviceContext = new Context({ isMobile: true });
+App.env.deviceContext = deviceContext;
+```
+
+If we want to make it completely responsive, we need to update its value whenever
+the size of the screen is updated:
+
+```js
+const isMobile = () => window.innerWidth <= 768;
+window.addEventListener(
+  "resize",
+  owl.utils.debounce(() => {
+    const state = deviceContext.state;
+    if (state.isMobile !== isMobile()) {
+      state.isMobile = !state.isMobile;
+    }
+  }, 15)
+);
+```
+
+Then, each component that want can subscribe and render differently depending on the
+fact that we are in a mobile or desktop mode.
+
+```js
+class SomeComponent extends Component {
+  static template = xml`
+    <div>
+      <t t-if=device.isMobile>
+          some simplified user interface
+      </t>
+      <t t-else="1">
+          a more advanced user interface
+      </t>
+    </div>`;
+  device = useContext(this.env.deviceContext);
+}
+```
+
+## Reference
+
+### `Context`
+
+A `Context` object should be created with a state object:
+
+```js
+const someContext = new Context({ some: "key" });
+```
+
+Its state is now available in the `state` key:
+
+```js
+someContext.state.some = "other key";
+```
+
+This is the way some global code (such as the responsive code above) should
+read and update the context state. However, components should not ever read the
+context state directly from the context, they should instead use the `useContext`
+hook to properly register themselves to state changes.
+
+Note that the `Context` hook is different from the React version. For example,
+there is no concept of provider/consumer. So, the `Context` feature does not
+by itself allow the use of a different context state depending on the component
+place in the component tree. However, this functionality can be obtained, if
+necessary, with the use of sub environment.
+
+### `useContext`
+
+The `useContext` hook is the normal way for a component to register themselve
+to context state changes. The `useContext` method returns the context state:
+
+```js
+device = useContext(this.env.deviceContext);
+```
+
+It is a simple observed state (with an owl `Observer`), which contains the shared
+information.

doc/reference/environment.md

@@ -0,0 +1,127 @@
+# 🦉 Environment 🦉
+
+## Content
+
+- [Overview](#overview)
+- [Setting an Environment](#setting-an-environment)
+- [Using a sub environment](#using-a-sub-environment)
+- [Content of an Environment](#content-of-an-environment)
+
+## Overview
+
+An environment is an object which contains a [`QWeb` instance](qweb_engine.md). Whenever
+a root component is created, it is assigned an environment (see
+[below](#setting-an-environment) for more info on this). This environment is
+then automatically given to each sub component (and accessible in the `this.env`
+property).
+
+```
+    Root
+    /  \
+   A    B
+```
+
+This way, all components share the same `QWeb` instance. Owl internally requires
+that the environment has a `qweb` key which maps to a
+[`QWeb`](qweb_engine.md) instance. This is the QWeb instance that will be used to
+render each templates in this specific component tree. Note that if no `QWeb`
+instance is provided, Owl will simply generate it on the fly.
+
+The environment is mostly static. Each application is free to add anything to
+the environment, which is very useful, since this can be accessed by each sub
+component.
+
+## Setting an environment
+
+An Owl application needs an [environment](environment.md) to be executed. The
+environment has an important key: the [QWeb](qweb_engine.md) instance, which will render
+all templates.
+
+Whenever a root component `App` is mounted, Owl will setup a valid environment by
+following the next steps:
+
+- take the `env` object defined on `App.env` (if no `env` was explicitely setup,
+  this will be return the empty `env` object defined on `Component`)
+- if `env.qweb` is not set, then Owl will create a `QWeb` instance.
+
+The correct way to customize an environment is to simply set it up on the root
+component class, before the first component is created:
+
+```js
+App.env = {
+    _t: myTranslateFunction,
+    user: {...},
+    services: {
+        ...
+    },
+};
+const app = new App();
+app.mount(document.body);
+```
+
+It is also possible to simply share an environment between all root components,
+by simply doing this:
+
+```js
+Component.env = myEnv; // will be the default env for all components
+```
+
+Note that this environment is the global owl environment for an application. The
+next section explains how to extend an environment for a specific sub component
+and its children.
+
+## Using a sub environment
+
+It is sometimes useful to add one (or more) specific keys to the environment,
+from the perspective of a specific component and its children. In that case, the
+solution presented above will not work, since it sets the global environment.
+
+There is a hook for this situation: [`useSubEnv`](hooks.md#usesubenv).
+
+```js
+class FormComponent extends Component {
+  constructor(parent, props) {
+    super(parent, props);
+    useSubEnv({ myKey: someValue });
+  }
+}
+```
+
+## Content of an Environment
+
+Some good use cases for additional keys in the environment are:
+
+- some configuration keys,
+- session information,
+- generic services (such as doing rpcs, or accessing local storage).
+
+Doing it this way means that components are easily testable: we can simply
+create a test environment with mock services.
+
+For example:
+
+```js
+async function myEnv() {
+  const templates = await loadTemplates();
+  const qweb = new QWeb({ templates });
+  const session = getSession();
+
+  return {
+    _t: myTranslateFunction,
+    session: session,
+    qweb: qweb,
+    services: {
+      localStorage: localStorage,
+      rpc: rpc
+    },
+    debug: false,
+    inMobileMode: true
+  };
+}
+
+async function start() {
+  App.env = await myEnv();
+  const app = new App();
+  await app.mount(document.body);
+}
+```

doc/reference/event_bus.md

@@ -0,0 +1,27 @@
+# 🦉 Event Bus 🦉
+
+It is sometimes useful to use a `Bus` to communicate informations between various
+parts of the code. Owl has a very simple bus class, which manages subscriptions,
+triggering events, and callbacks.
+
+```js
+const bus = new owl.core.EventBus();
+
+bus.on("some-event", null, function(...args) {
+  console.log(...args);
+});
+
+bus.trigger("some-event", 1, 2, 3);
+// [1,2,3] will be logged to the console
+```
+
+Its API is:
+
+| Method                           | Description                       |
+| -------------------------------- | --------------------------------- |
+| `on(eventType, owner, callback)` | add a listener                    |
+| `off(eventType, owner)`          | remove all listeners for an owner |
+| `trigger(eventType, ...args)`    | trigger an event                  |
+| `clear`                          | remove all subscriptions          |
+
+Note that the [`Store`](store.md) is an example of an `EventBus`.

doc/reference/hooks.md

@@ -0,0 +1,435 @@
+# 🦉 Hooks 🦉
+
+## Content
+
+- [Overview](#overview)
+- [Example: Mouse Position](#example-mouse-position)
+- [Example: Autofocus](#example-autofocus)
+- [Reference](#reference)
+  - [One Rule](#one-rule)
+  - [`useState`](#usestate)
+  - [`onMounted`](#onmounted)
+  - [`onWillUnmount`](#onwillunmount)
+  - [`onWillPatch`](#onwillpatch)
+  - [`onPatched`](#onpatched)
+  - [`onWillStart`](#onwillstart)
+  - [`onWillUpdateProps`](#onwillupdateprops)
+  - [`useContext`](#usecontext)
+  - [`useRef`](#useref)
+  - [`useSubEnv`](#usesubenv)
+  - [`useStore`](#usestore)
+  - [`useDispatch`](#usedispatch)
+  - [`useGetters`](#usegetters)
+  - [Making customized hooks](#making-customized-hooks)
+
+## Overview
+
+Hooks were popularised by React as a way to solve the following issues:
+
+- help reusing stateful logic between components
+- help organizing code by feature in complex components
+- use state in functional components, without writing a class.
+
+Owl hooks serve the same purpose, except that they work for class components
+(note: React hooks do not work on class components, and maybe because of that,
+there seems to be the misconception that hooks are in opposition to class. This
+is clearly not true, as shown by Owl hooks).
+
+Hooks work beautifully with Owl components: they solve the problems mentioned
+above, and in particular, they are the perfect way to make your component
+reactive.
+
+## Example: mouse position
+
+Here is the classical example of a non trivial hook to track the mouse position.
+
+```js
+const { useState, onMounted, onWillUnmount } = owl.hooks;
+
+// We define here a custom behaviour: this hook tracks the state of the mouse
+// position
+function useMouse() {
+  const position = useState({ x: 0, y: 0 });
+
+  function update(e) {
+    position.x = e.clientX;
+    position.y = e.clientY;
+  }
+  onMounted(() => {
+    window.addEventListener("mousemove", update);
+  });
+  onWillUnmount(() => {
+    window.removeEventListener("mousemove", update);
+  });
+
+  return position;
+}
+
+// Main root component
+class App extends owl.Component {
+  static template = xml`
+    <div t-name="App">
+      <div>Mouse: <t t-esc="mouse.x"/>, <t t-esc="mouse.y"/></div>
+    </div>`;
+
+  // this hooks is bound to the 'mouse' property.
+  mouse = useMouse();
+}
+```
+
+Note that we use the prefix `use` for hooks, just like in React. This is just
+a convention.
+
+## Example: autofocus
+
+Hooks can be combined to create the desired effect. For example, the following
+hook combines the `useRef` hook with the `onPatched` and `onMounted` functions
+to create an easy way to focus an input whenever it appears in the DOM:
+
+```js
+function useAutofocus(name) {
+  let ref = useRef(name);
+  let isInDom = false;
+  function updateFocus() {
+    if (!isInDom && ref.el) {
+      isInDom = true;
+      ref.el.focus();
+    } else if (isInDom && !ref.el) {
+      isInDom = false;
+    }
+  }
+  onPatched(updateFocus);
+  onMounted(updateFocus);
+}
+```
+
+This hook takes the name of a valid `t-ref` directive, which should be present
+in the template. It then checks whenever the component is mounted or patched if
+the reference is not valid, and in this case, it will focus the node element.
+This hook can be used like this:
+
+```js
+class SomeComponent extends Component {
+  static template = xml`
+    <div>
+        <input />
+        <input t-ref="myinput"/>
+    </div>`;
+
+  constructor(...args) {
+    super(...args);
+    useAutofocus("myinput");
+  }
+}
+```
+
+## Reference
+
+### One rule
+
+There is only one rule: every hook for a component has to be called in the
+constructor (or in class fields):
+
+```js
+// ok
+class SomeComponent extends Component {
+  state = useState({ value: 0 });
+}
+
+// also ok
+class SomeComponent extends Component {
+  constructor(...args) {
+    super(...args);
+    this.state = useState({ value: 0 });
+  }
+}
+
+// not ok: this is executed after the constructor is called
+class SomeComponent extends Component {
+  async willStart() {
+    this.state = useState({ value: 0 });
+  }
+}
+```
+
+As you can see, the `useState` hook does not need to be given a reference to
+the component. This is possible because there is a way to get a reference to the
+current component: the `Component.current` static property is the reference to the
+component instance that is currently being created.
+
+Hooks need to be called in the constructor to ensure that this reference is
+properly set. This is also a good thing for performance reasons (Owl can use
+this to optimize its implementation), and for a clean architecture (this makes
+it easier for developers to understand what is really happening in a component).
+
+### `useState`
+
+The `useState` hook is certainly the most important hook for Owl components:
+this is what allows a component to be reactive, to react to state change.
+
+The `useState` hook has to be given an object or an array, and will return
+an observed version of it (using a `Proxy`).
+
+```javascript
+const { useState } = owl.hooks;
+
+class Counter extends owl.Component {
+  static template = xml`
+    <button t-on-click="increment">
+        Click Me! [<t t-esc="state.value"/>]
+    </button>`;
+
+  state = useState({ value: 0 });
+
+  increment() {
+    this.state.value++;
+  }
+}
+```
+
+It is important to remember that `useState` only works with objects or arrays. It
+is necessary, since Owl needs to react to a change in state.
+
+### `onMounted`
+
+`onMounted` is not a user hook, but is a building block designed to help make useful
+abstractions. `onMounted` registers a callback, which will be called when the component
+is mounted (see example on top of this page).
+
+### `onWillUnmount`
+
+`onWillUnmount` is not a user hook, but is a building block designed to help make useful
+abstractions. `onWillUnmount` registers a callback, which will be called when the component
+is unmounted (see example on top of this page).
+
+### `onWillPatch`
+
+`onWillPatch` is not a user hook, but is a building block designed to help make useful
+abstractions. `onWillPatch` registers a callback, which will be called just
+before the component patched.
+
+### `onPatched`
+
+`onPatched` is not a user hook, but is a building block designed to help make useful
+abstractions. `onPatched` registers a callback, which will be called just
+after the component patched.
+
+### `onWillStart`
+
+`onWillStart` is an asynchronous hook. This means that the function registered
+in the hook will be run just before the component is first rendered and can return a
+promise, to express the fact that it is an asynchronous operation.
+
+Note that if there are more than one `onWillStart` registered callback, then they
+will all be run in parallel.
+
+It can be used to load some initial data. For example, the following hook will
+automatically load some data from the server, and return an object that will
+be ready whenever the component is rendered:
+
+```js
+function useLoader() {
+  const component = Component.current;
+  const record = useState({});
+  onWillStart(async () => {
+    const recordId = component.props.id;
+    Object.assign(record, await fetchSomeRecord(recordId));
+  });
+  return record;
+}
+```
+
+Note that this example does not update the record value whenever props are
+updated. For that situation, we need to use the `onWillUpdateProps` hook.
+
+### `onWillUpdateProps`
+
+Just like `onWillStart`, `onWillUpdateProps` is an asynchronous hook. It is
+designed to be run whenever the component props are updated. This could be
+useful to perform some asynchronous task such as fetching updated data.
+
+```js
+function useLoader() {
+  const component = Component.current;
+  const record = useState({});
+
+  async function updateRecord(id) {
+    Object.assign(record, await fetchSomeRecord(id));
+  }
+
+  onWillStart(() => updateRecord(component.props.id));
+  onWillUpdateProps(nextProps => updateRecord(nextProps.id));
+
+  return record;
+}
+```
+
+Note that if there are more than one `onWillUpdateProps` registered callback,
+then they will all be run in parallel.
+
+### `useContext`
+
+See [`useContext`](context.md#usecontext) for reference documentation.
+
+### `useRef`
+
+The `useRef` hook is useful when we need a way to interact with some inside part
+of a component, rendered by Owl. It can work either on a DOM node, or on a component,
+tagged by the `t-ref` directive:
+
+```xml
+<div>
+    <div t-ref="someDiv"/>
+    <SubComponent t-ref="someComponent"/>
+</div>
+```
+
+In this example, the component will be able to access the `div` and the component
+`SubComponent` using the `useRef` hook:
+
+```js
+class Parent extends Component {
+  subRef = useRef("someComponent");
+  divRef = useRef("someDiv");
+
+  someMethod() {
+    // here, if component is mounted, refs are active:
+    // - this.divRef.el is the div HTMLElement
+    // - this.subRef.comp is the instance of the sub component
+    // - this.subRef.el is the root HTML node of the sub component (i.e. this.subRef.comp.el)
+  }
+}
+```
+
+As shown by the example above, html elements are accessed by using the `el`
+key, and components references are accessed with `comp`.
+
+Notes:
+
+- if used on a component, the reference will be set in the `refs`
+  variable between `willPatch` and `patched`,
+- on a component, accessing `ref.el` will get the root node of the component.
+
+The `t-ref` directive also accepts dynamic values with string interpolation
+(like the [`t-attf-`](qweb_templating_language.md#dynamic-attributes) and
+`t-component` directives). For example,
+
+```xml
+<div t-ref="component_{{someCondition ? '1' : '2'}}"/>
+```
+
+Here, the references need to be set like this:
+
+```js
+this.ref1 = useRef("component_1");
+this.ref2 = useRef("component_2");
+```
+
+References are only guaranteed to be active while the parent component is mounted.
+If this is not the case, accessing `el` or `comp` on it will return `null`.
+
+### `useSubEnv`
+
+The environment is sometimes useful to share some common information between
+all components. But sometimes, we want to _scope_ that knowledge to a subtree.
+
+For example, if we have a form view component, maybe we would like to make some
+`model` object available to all sub components, but not to the whole application.
+This is where the `useSubEnv` hook may be useful: it lets a component add some
+information to the environment in a way that only the component and its children
+can access it:
+
+```js
+class FormComponent extends Component {
+  constructor(...args) {
+    super(...args);
+    const model = makeModel();
+    useSubEnv({ model });
+  }
+}
+```
+
+The `useSubEnv` takes one argument: an object which contains some key/value that
+will be added to the parent environment. Note that it will extend, not replace
+the parent environment. And of course, the parent environment will not be
+affected.
+
+### `useStore`
+
+The `useStore` hook is the entry point for a component to connect to the store.
+See the [store documentation](store.md) for more information.
+
+### `useDispatch`
+
+The `useDispatch` hook is the way for components to get a reference to the store
+`dispatch` function. See the [store documentation](store.md) for more information.
+
+### `useGetters`
+
+The `useGetters` hook is the way for components to get a reference to the store
+getters. See the [store documentation](store.md) for more information.
+
+### Making customized hooks
+
+Hooks are a wonderful way to organize the code of a complex component by feature
+instead of by lifecycle methods. They are like mixins, except that they can be
+easily composed together.
+
+But, like every good things in life, hooks should be used with moderation. They are
+not the solution to every problem.
+
+- they may be overkill: if your component needs to perform some action specific
+  to itself (so, the specific code does not need to be shared), there is nothing
+  wrong with a simple class method:
+
+  ```js
+  // maybe overkill
+  class A extends Component {
+    constructor(...args) {
+      super(...args);
+      useMySpecificHook();
+    }
+  }
+
+  // ok
+  class B extends Component {
+    constructor(...args) {
+      super(...args);
+      this.performSpecificTask();
+    }
+  }
+  ```
+
+  Note that the second solution is easier to extend in sub components.
+
+- they may be harder to test: if a customized hook injects some external side
+  effect dependency, then it is harder to test without doing some non obvious
+  manipulation. For example, assume that we want to give a reference to a
+  router in a `useRouter` hook. We could do this:
+
+  ```js
+  const router = new Router(...);
+
+  function useRouter() {
+      return router;
+  }
+  ```
+
+  As you can see, this does not _hook_ into the internal of the component. It
+  simply returns a global object, which is difficult to mock.
+
+  A better way would be to do something like this: get the reference from the
+  environment.
+
+  ```js
+  function useRouter() {
+    return Component.current.env.router;
+  }
+  ```
+
+  This means that we give control to the application developer to create the
+  router, which is good, so they can set it up, subclass it, ... And then, to
+  test our components, we can just add a mock router in the environment.
+
+Note: the code above makes use of the `Component.current` property. This is the
+way hooks are able to get a reference to the component currently being created.

doc/reference/misc.md

@@ -0,0 +1,23 @@
+# 🦉 Miscellaneous 🦉
+
+## `AsyncRoot`
+
+When this component is used, a new rendering sub tree is created, such that the
+rendering of that component (and its children) is not tied to the rendering of
+the rest of the interface. It can be used on an asynchronous component, to
+prevent it from delaying the rendering of the whole interface, or on a
+synchronous one, such that its rendering isn't delayed by other (asynchronous)
+components. Note that this directive has no effect on the first rendering, but
+only on subsequent ones (triggered by state or props changes).
+
+```xml
+<div t-name="ParentComponent">
+  <SyncChild />
+  <AsyncRoot>
+     <AsyncChild/>
+  </AsyncRoot>
+</div>
+```
+
+The `AsyncRoot` assumes that there is exactly one root node inside it. It can
+be a dom node or a component.

doc/reference/observer.md

@@ -0,0 +1,52 @@
+# 🦉 Observer 🦉
+
+Owl needs to be able to react to state changes. For example, whenever the state
+of a component is changed, Owl needs to rerender it. To help with that, there is
+an Observer class. Its job is to observe the state of an object (or array), and
+to react to any change. The observer is implemented with the native `Proxy`
+object. Note that this means that it will not work on older browsers.
+
+Note that the `Observer` is used by the `useState` and `useContext` hooks. This
+is the way most Owl applications will create observers. For the majority of
+use cases, there is no need to directly instantiate an observer.
+
+## Example
+
+For example, this code will display `update` in the console:
+
+```javascript
+const observer = new owl.Observer();
+observer.notifyCB = () => console.log("update");
+const obj = observer.observe({ a: { b: 1 } });
+
+obj.a.b = 2;
+```
+
+This example shows that an observer can observe nested properties.
+
+## Reference
+
+**observe** An observer can observe multiple values with the `observe` method.
+This method takes an object or an array as its argument and will return a proxy
+(which is mapped to the initial object/array). With this proxy, the observer
+can detect whenever any internal value is changed.
+
+**Registering a callback** Whenever an observer sees a state change, it will
+call its `notifyCB` method. No additional information is given to the callback.
+
+**deepRevNumber** Each observed value has an internal revision number, which
+is incremented every time the value is observed. Sometimes, it can be useful
+to obtain that number:
+
+```js
+const observer = new owl.Observer();
+const obj = observer.observe({ a: { b: 1 } });
+
+observer.deepRevNumber(obj.a); // 1
+obj.a.b = 2;
+
+observer.deepRevNumber(obj.a); // 2
+```
+
+The `deepRevNumber` can also return 0, which indicates that the value is not
+observed.

doc/reference/props.md

@@ -0,0 +1,97 @@
+# 🦉 Props 🦉
+
+## Content
+
+- [Overview](#overview)
+- [Definition](#definition)
+- [Good Practices](#good-practices)
+- [Dynamic Props](#dynamic-props)
+
+## Overview
+
+In Owl, `props` (short for _properties_) is an object which contains every piece
+of data given to a component by its parent.
+
+```js
+class Child extends Component {
+  static template = xml`<div><t t-esc="props.a"/><t t-esc="props.b"/></div>`;
+}
+
+class Parent extends Component {
+  static template = xml`<div><ComponentA a="state.a" b="'string'"/></div>`;
+  static components = { Child };
+  state = useState({ a: "fromparent" });
+}
+```
+
+In this example, the `Child` component receives two props from its parent: `a`
+and `b`. They are collected into a `props` object by Owl, with each value being
+evaluated in the context of the parent. So, `props.a` is equal to `'fromparent'` and
+`props.b` is equal to `'string'`.
+
+Note that `props` is an object that only makes sense from the perspective of the
+child component.
+
+## Definition
+
+The `props` object is made of every attributes defined on the template, with the
+following exceptions:
+
+- every attribute starting with `t-` are not props (they are QWeb directives),
+- `style` and `class` attributes are excluded as well (they are applied by Owl on
+  the root element of the component).
+
+In the following example:
+
+```xml
+<div>
+    <ComponentA a="state.a" b="'string'"/>
+    <ComponentB t-if="state.flag" model="model"/>
+    <ComponentC style="color:red;" class="left-pane" />
+</div>
+```
+
+the `props` object contains the following keys:
+
+- for `ComponentA`: `a` and `b`,
+- for `ComponentB`: `model`,
+- for `ComponentC`: empty object
+
+## Good Practices
+
+A `props` object is a collection of values that come from the parent. As such,
+they are owned by the parent, and should never be modified by the child:
+
+```js
+class MyComponent extends Component {
+  constructor(parent, props) {
+    super(parent, props);
+    props.a.b = 43; // Never do that!!!
+  }
+}
+```
+
+Props should be considered readonly, from the perspective of the child component.
+If there is a need to modify them, then the request to update them should be
+sent to the parent (for example, with an event).
+
+Any value can go in a props. Strings, objects, classes, or even callbacks could
+be given to a child component (but then, in the case of callbacks, communicating
+with events seems more appropriate).
+
+## Dynamic Props
+
+The `t-props` directive can be used to specify totally dynamic props:
+
+```xml
+<div t-name="ParentComponent">
+    <Child t-props="some.obj"/>
+</div>
+```
+
+```js
+class ParentComponent {
+  static components = { Child };
+  some = { obj: { a: 1, b: 2 } };
+}
+```

doc/reference/qweb_engine.md

@@ -0,0 +1,151 @@
+# 🦉 QWeb Engine 🦉
+
+## Content
+
+- [Overview](#overview)
+- [Reference](#reference)
+
+## Overview
+
+[QWeb](https://www.odoo.com/documentation/13.0/reference/qweb.html) is the primary
+templating engine used by Odoo. The QWeb class in the OWL project is an
+implementation of that specification with a few interesting points:
+
+- it compiles templates into functions that output a virtual DOM instead of a
+  string. This is necessary for the component system.
+- it has a few extra directives: `t-component`, `t-on`, ...
+
+We present in this section the engine, not the templating language.
+
+## Reference
+
+This section is about the javascript code that implements the `QWeb` specification.
+Owl exports a `QWeb` class in `owl.QWeb`. To use it, it just needs to be
+instantiated:
+
+```js
+const qweb = new owl.QWeb();
+```
+
+Its API is quite simple:
+
+- **`constructor(config)`**: constructor. Takes an optional configuration object
+  with an optional `templates` string to add initial
+  templates (see `addTemplates` for more information on format of the string)
+  and an optional `translateFn` translate function (see the section on
+  [translations](#translations)).
+
+  ```js
+  const qweb = new owl.QWeb({ templates: TEMPLATES, translateFn: _t });
+  ```
+
+- **`addTemplate(name, xmlStr, allowDuplicate)`**: add a specific template.
+
+  ```js
+  qweb.addTemplate("mytemplate", "<div>hello</div>");
+  ```
+
+  If the optional `allowDuplicate` is set to `true`, then `QWeb` will simply
+  ignore templates added for a second time. Otherwise, `QWeb` will crash.
+
+- **`addTemplates(xmlStr)`**: add a list of templates (identified by `t-name`
+  attribute).
+
+  ```js
+  const TEMPLATES = `
+    <templates>
+      <div t-name="App" class="main">main</div>
+      <div t-name="OtherComponent">other component</div>
+    </templates>`;
+  qweb.addTemplates(TEMPLATES);
+  ```
+
+- **`render(name, context, extra)`**: renders a template. This returns a `vnode`,
+  which is a virtual representation of the DOM (see [vdom doc](../architecture/vdom.md)).
+
+  ```js
+  const vnode = qweb.render("App", component);
+  ```
+
+- **`renderToString(name, context)`**: renders a template, but returns an html
+  string.
+
+  ```js
+  const str = qweb.renderToString("someTemplate", somecontext);
+  ```
+
+- **`registerTemplate(name, template)`**: static function to register a global
+  QWeb template. This is useful for commonly used components accross the
+  application, and for making a template available to an application without
+  having a reference to the actual QWeb instance.
+
+  ```js
+  QWeb.registerTemplate("mytemplate", `<div>some template</div>`);
+  ```
+
+- **`registerComponent(name, Component)`**: static function to register an OWL Component
+  to QWeb's global registry. Globally registered Components can be used in
+  templates (see the `t-component` directive). This is useful for commonly used
+  components accross the application.
+
+  ```js
+  class Dialog extends owl.Component { ... }
+  QWeb.registerComponent("Dialog", Dialog);
+
+  ...
+
+  class ParentComponent extends owl.Component { ... }
+  qweb.addTemplate("ParentComponent", "<div><Dialog/></div>");
+  ```
+
+In some way, a `QWeb` instance is the core of an Owl application. It is the only
+mandatory element of an [environment](environment.md). As such, it
+has an extra responsibility: it can act as an event bus for internal communication
+between Owl classes. This is the reason why `QWeb` actually extends [EventBus](event_bus.md).
+
+### Translations
+
+If properly setup, Owl QWeb engine can translate all rendered templates. To do
+so, it needs a translate function, which takes a string and returns a string.
+
+For example:
+
+```js
+const translations = {
+  hello: "bonjour",
+  yes: "oui",
+  no: "non"
+};
+const translateFn = str => translations[str] || str;
+
+const qweb = new QWeb({ translateFn });
+```
+
+Once setup, all rendered templates will be translated using `translateFn`:
+
+- each text node will be replaced with its translation,
+- each of the following attribute values will be translated as well: `title`,
+  `placeholder`, `label` and `alt`,
+- translating text nodes can be disabled with the special attribute `t-translation`,
+  if its value is `off`.
+
+So, with the above `translateFn`, the following templates:
+
+```xml
+<div>hello</div>
+<div t-translation="off">hello</div>
+<div>Are you sure?</div>
+<input placeholder="hello" other="yes"/>
+```
+
+will be rendered as:
+
+```xml
+<div>bonjour</div>
+<div>hello</div>
+<div>Are you sure?</div>
+<input placeholder="bonjour" other="yes"/>
+```
+
+Note that the translation is done during the compilation of the template, not
+when it is rendered.

doc/reference/qweb_templating_language.md

@@ -0,0 +1,539 @@
+# 🦉 QWeb Templating Language🦉
+
+## Content
+
+- [Overview](#overview)
+- [Directives](#directives)
+- [Reference](#reference)
+  - [White Spaces](#white-spaces)
+  - [Root Nodes](#root-nodes)
+  - [Expression Evaluation](#expression-evaluation)
+  - [Static html Nodes](#static-html-nodes)
+  - [Outputting Data](#outputting-data)
+  - [Setting Variables](#setting-variables)
+  - [Conditionals](#conditionals)
+  - [Dynamic Attributes](#dynamic-attributes)
+  - [Loops](#loops)
+  - [Rendering Sub Templates](#rendering-sub-templates)
+  - [Translations](#translations)
+  - [Debugging](#debugging)
+
+## Overview
+
+[QWeb](https://www.odoo.com/documentation/13.0/reference/qweb.html) is the primary
+templating engine used by Odoo. It is based on the XML format, and used
+mostly to generate HTML. In OWL, QWeb templates are compiled into functions that
+generate a virtual dom representation of the HTML.
+
+```xml
+<div>
+    <span t-if="somecondition">Some string</span>
+    <ul t-else="1">
+        <li t-foreach="messages" t-as="message">
+            <t t-esc="message"/>
+        </li>
+    </ul>
+</div>
+```
+
+Template directives are specified as XML attributes prefixed with `t-`, for
+instance `t-if` for conditionals, with elements and other attributes being
+rendered directly.
+
+To avoid element rendering, a placeholder element `<t>` is also available, which
+executes its directive but doesn’t generate any output in and of itself.
+
+We present in this section the templating language, including its Owl specific
+extensions.
+
+## Directives
+
+For reference, here is a list of all standard QWeb directives:
+
+| Name                           | Description                                                    |
+| ------------------------------ | -------------------------------------------------------------- |
+| `t-esc`                        | [Outputting safely a value](#outputting-data)                  |
+| `t-raw`                        | [Outputting value, without escaping](#outputting-data)         |
+| `t-set`, `t-value`             | [Setting variables](#setting-variables)                        |
+| `t-if`, `t-elif`, `t-else`,    | [conditionally rendering](#conditionals)                       |
+| `t-foreach`, `t-as`            | [Loops](#loops)                                                |
+| `t-att`, `t-attf-*`, `t-att-*` | [Dynamic attributes](#dynamic-attributes)                      |
+| `t-call`                       | [Rendering sub templates](#rendering-sub-templates)            |
+| `t-debug`, `t-log`             | [Debugging](#debugging)                                        |
+| `t-translation`                | [Disabling the translation of a node](#translations)           |
+| `t-name`                       | [Defining a template (not really a directive)](qweb_engine.md) |
+
+The component system in Owl requires additional directives, to express various
+needs. Here is a list of all Owl specific directives:
+
+| Name                     | Description                                                                     |
+| ------------------------ | ------------------------------------------------------------------------------- |
+| `t-component`, `t-props` | [Defining a sub component](component.md#composition)                            |
+| `t-ref`                  | [Setting a reference to a dom node or a sub component](component.md#references) |
+| `t-key`                  | [Defining a key (to help virtual dom reconciliation)](#loops)                   |
+| `t-on-*`                 | [Event handling](component.md#event-handling)                                   |
+| `t-transition`           | [Defining an animation](animations.md#css-transitions)                          |
+| `t-slot`                 | [Rendering a slot](component.md#slots)                                          |
+| `t-model`                | [Form input bindings](component.md#form-input-bindings)                         |
+
+## Reference
+
+### White Spaces
+
+White spaces in a template are handled in a special way:
+
+- consecutive whitespaces are always condensed to a single whitespace
+- if a whitespace-only text node contains a linebreak, it is ignored
+- the previous rules do not apply if we are in a `<pre>` tag
+
+### Root Nodes
+
+For many reasons, Owl QWeb templates should have a single root node. More
+precisely, the result of a template rendering should have a single root node:
+
+```xml
+<!–– not ok: two root nodes ––>
+<t>
+    <div>foo</div>
+    <div>bar</div>
+</t>
+
+<!–– ok: result has one single root node ––>
+<t>
+    <div t-if="someCondition">foo</div>
+    <span t-else="1">bar</span>
+</t>
+```
+
+Extra root nodes will actually be ignored (even though they will be rendered
+in memory).
+
+Note: this does not apply to subtemplates (see the `t-call` directive). In that
+case, they will be inlined in the main template, and can actually have many
+root nodes.
+
+### Expression Evaluation
+
+QWeb expressions are strings that will be processed at compile time. Each variable in
+the javascript expression will be replaced with a lookup in the context (so, the
+component). For example, `a + b.c(d)` will be converted into:
+
+```js
+context["a"] + context["b"].c(context["d"]);
+```
+
+It is useful to explain the various rules that apply on these expressions:
+
+1. it should be a simple expression which returns a value. It cannot be a statement.
+
+   ```xml
+   <div><p t-if="1 + 2 === 3">ok</p></div>
+   ```
+
+   is valid, but the following is not valid:
+
+   ```xml
+   <div><p t-if="console.log(1)">NOT valid</p></div>
+   ```
+
+2. it can use anything in the rendering context (typically, the component):
+
+   ```xml
+   <p t-if="user.birthday === today()">Happy bithday!</p>
+   ```
+
+   is valid, and will read the `user` object from the context, and call the
+   `today` function.
+
+3. it can use a few special operators to avoid using symbols such as `<`, `>`,
+   `&` or `|`. This is useful to make sure that we still write valid XML.
+
+   | Word  | replaced with |
+   | ----- | ------------- |
+   | `and` | `&&`          |
+   | `or`  | `\|\|`        |
+   | `gt`  | `>`           |
+   | `gte` | `>=`          |
+   | `lt`  | `<`           |
+   | `lte` | `<=`          |
+
+   So, one can write this:
+
+   ```xml
+   <div><p t-if="10 + 2 gt 5">ok</p></div>
+   ```
+
+### Static Html Nodes
+
+Normal, regular html nodes are rendered into themselves:
+
+```xml
+  <div>hello</div> <!–– rendered as itself ––>
+```
+
+### Outputting Data
+
+The `t-esc` directive is necessary whenever you want to add a dynamic text
+expression in a template. The text is escaped to avoid security issues.
+
+```xml
+<p><t t-esc="value"/></p>
+```
+
+rendered with the value `value` set to `42` in the rendering context yields:
+
+```html
+<p>42</p>
+```
+
+The `t-raw` directive is almost the same as `t-esc`, but without the escaping.
+This is mostly useful to inject a raw html string somewhere. Obviously, this
+is unsafe to do in general, and should only be used for strings known to be safe.
+
+```xml
+<p><t t-raw="value"/></p>
+```
+
+rendered with the value `value` set to `<span>foo</span>` in the rendering context yields:
+
+```html
+<p><span>foo</span></p>
+```
+
+Note that since the content of the expression is not known beforehand, the `t-raw`
+directive has to parse the html (and convert it to a virtual dom structure) for
+each rendering. So, it will be much slower than a regular template. It is
+therefore advised to limit the use of `t-raw` whenever possible.
+
+### Setting Variables
+
+QWeb allows creating variables from within the template, to memoize a computation (to use it multiple times), give a piece of data a clearer name, ...
+
+This is done via the `t-set` directive, which takes the name of the variable to create. The value to set can be provided in two ways:
+
+1. a `t-value` attribute containing an expression, and the result of its
+   evaluation will be set:
+
+   ```xml
+   <t t-set="foo" t-value="2 + 1"/>
+   <t t-esc="foo"/>
+   ```
+
+   will print `3`. Note that the evaluation is done at rendering time, not at
+   compilte time.
+
+2. if there is no `t-value` attribute, the node’s body is saved and its value is
+   set as the variable’s value:
+
+   ```xml
+   <t t-set="foo">
+       <li>ok</li>
+   </t>
+   <t t-esc="foo"/>
+   ```
+
+   will generate `&lt;li&gt;ok&lt;/li&gt;` (the content is escaped as we used the `t-esc` directive)
+
+The `t-set` directive acts like a regular variable in most programming language.
+It is lexically scoped (inner nodes are sub scopes), can be shadowed, ...
+
+### Conditionals
+
+The `t-if` directive is useful to conditionally render something. It evaluates
+the expression given as attribute value, and then acts accordingly.
+
+```xml
+<div>
+    <t t-if="condition">
+        <p>ok</p>
+    </t>
+</div>
+```
+
+The element is rendered if the condition (evaluated with the current rendering
+context) is true:
+
+```xml
+<div>
+    <p>ok</p>
+</div>
+```
+
+but if the condition is false it is removed from the result:
+
+```xml
+<div>
+</div>
+```
+
+The conditional rendering applies to the bearer of the directive, which does not
+have to be `<t>`:
+
+```xml
+<div>
+    <p t-if="condition">ok</p>
+</div>
+```
+
+will give the same results as the previous example.
+
+Extra conditional branching directives `t-elif` and `t-else` are also available:
+
+```xml
+<div>
+    <p t-if="user.birthday == today()">Happy bithday!</p>
+    <p t-elif="user.login == 'root'">Welcome master!</p>
+    <p t-else="">Welcome!</p>
+</div>
+```
+
+### Dynamic Attributes
+
+One can use the `t-att-` directive to add dynamic attributes. Its main use is to
+evaluate an expression (at rendering time) and bind an attribute to its result:
+
+For example, if we have `id` set to 32 in the rendering context,
+
+```xml
+<div t-att-data-action-id="id"/> <!-- result: <div data-action-id="32"></div> -->
+```
+
+If an expression evaluates to a falsy value, it will not be set at all:
+
+```xml
+<div t-att-foo="false"/>  <!-- result: <div></div> -->
+```
+
+It is sometimes convenient to format an attribute with string interpolation. In
+that case, the `t-attf-` directive can be used. It is useful when we need to mix
+literal and dynamic elements, such as css classes.
+
+```xml
+<div t-attf-foo="a {{value1}} is {{value2}} of {{value3}} ]"/>
+<!-- result if values are set to 1,2 and 3: <div foo="a 0 is 1 of 2 ]"></div> -->
+```
+
+If we need completely dynamic attribute names, then there is an additional
+directive: `t-att`, which takes either an object (with keys mapping to their
+values) or a pair `[key, value]`. For example:
+
+```xml
+<div t-att="{'a': 1, 'b': 2}"/> <!-- result: <div a="1" b="2"></div> -->
+
+<div t-att="['a', 'b']"/> <!-- <div a="b"></div> -->
+```
+
+### Loops
+
+QWeb has an iteration directive `t-foreach` which take an expression returning the
+collection to iterate on, and a second parameter `t-as` providing the name to use
+for the current item of the iteration:
+
+```xml
+<t t-foreach="[1, 2, 3]" t-as="i">
+    <p><t t-esc="i"/></p>
+</t>
+```
+
+will be rendered as:
+
+```xml
+<p>1</p>
+<p>2</p>
+<p>3</p>
+```
+
+Like conditions, `t-foreach` applies to the element bearing the directive’s attribute, and
+
+```xml
+<p t-foreach="[1, 2, 3]" t-as="i">
+    <t t-esc="i"/>
+</p>
+```
+
+is equivalent to the previous example.
+
+`t-foreach` can iterate on an array (the current item will be the current value)
+or an object (the current item will be the current key).
+
+In addition to the name passed via t-as, `t-foreach` provides a few other
+variables for various data points (note: `$as` will be replaced with the name
+passed to `t-as`):
+
+- `$as_value`: the current iteration value, identical to `$as` for lists and
+  integers, but for objects, it provides the value (where `$as` provides the key)
+- `$as_index`: the current iteration index (the first item of the iteration has index 0)
+- `$as_first`: whether the current item is the first of the iteration
+  (equivalent to `$as_index == 0`)
+- `$as_last`: whether the current item is the last of the iteration
+  (equivalent to `$as_index + 1 == $as_size`), requires the iteratee’s size be
+  available
+
+These extra variables provided and all new variables created into the `t-foreach`
+are only available in the scope of the `t-foreach`. If the variable exists outside
+the context of the `t-foreach`, the value is copied at the end of the foreach
+into the global context.
+
+```xml
+<t t-set="existing_variable" t-value="false"/>
+<!-- existing_variable now False -->
+
+<p t-foreach="Array(3)" t-as="i">
+    <t t-set="existing_variable" t-value="true"/>
+    <t t-set="new_variable" t-value="true"/>
+    <!-- existing_variable and new_variable now true -->
+</p>
+
+<!-- existing_variable always true -->
+<!-- new_variable undefined -->
+```
+
+Even though Owl tries to be as declarative as possible, the DOM does not fully
+expose its state declaratively in the DOM tree. For example, the scrolling state,
+the current user selection, the focused element or the state of an input are not
+set as attribute in the DOM tree. This is why we use a virtual dom
+algorithm to keep the actual DOM node as much as possible.
+
+However, in some situations, this is not enough, and we need to help Owl decide
+if an element is actually the same, or is a different element with the same
+properties.
+
+Consider the following situation: we have a list of two items `[{text: "a"}, {text: "b"}]`
+and we render them in this template:
+
+```xml
+<p t-foreach="items" t-as="item"><t t-esc="item.text"/></p>
+```
+
+The result will be two `<p>` tags with text `a` and `b`. Now, if we swap them,
+and rerender the template, Owl needs to know what the intent is:
+
+- should Owl actually swap the DOM nodes,
+- or should it keep the DOM nodes, but with an updated text content?
+
+This might look trivial, but it actually matters. These two possibilities lead
+to different results in some cases. For example, if the user selected the text
+of the first `p`, swapping them will keep the selection while updating the
+text content will not.
+
+There are many other cases where this is important: `input` tags with their
+value, css classes and animations, scroll position...
+
+So, the `t-key` directive is used to give an identity to an element. It allows
+Owl to understand if different elements of a list are actually different or not.
+
+The above example could be modified by adding an ID: `[{id: 1, text: "a"}, {id: 2, text: "b"}]`.
+Then, the template could look like this:
+
+```xml
+<p t-foreach="items" t-as="item" t-key="item.id"><t t-esc="item.text"/></p>
+```
+
+The `t-key` directive is useful for lists (`t-foreach`). A key should be
+a unique number or string (objects will not work: they will be cast to the
+`"[object Object]"` string, which is obviously not unique).
+
+Also, the key can be set on a `t` tag or on its children. The following variations
+are all equivalent:
+
+```xml
+<p t-foreach="items" t-as="item" t-key="item.id">
+  <t t-esc="item.text"/>
+</p>
+
+<t t-foreach="items" t-as="item" t-key="item.id">
+  <p t-esc="item.text"/>
+</t>
+
+<t t-foreach="items" t-as="item">
+  <p t-key="item.id" t-esc="item.text"/>
+</t>
+```
+
+If there is no `t-key` directive, Owl will use the index as a default key.
+
+### Rendering Sub Templates
+
+QWeb templates can be used for top level rendering, but they can also be used
+from within another template (to avoid duplication or give names to parts of
+templates), using the `t-call` directive:
+
+```xml
+<div t-name="other-template">
+    <p><t t-value="var"/></p>
+</div>
+
+<div t-name="main-template">
+    <t t-set="var" t-value="owl"/>
+    <t t-call="other-template"/>
+</div>
+```
+
+will be rendered as `<div><p>owl</p></div>`. This example shows that the sub
+template is rendered with the execution context of the parent. The sub template
+is actually inlined in the main template, but in a sub scope: variables defined
+in the sub template do not escape.
+
+Sometimes, one might want to pass information to the sub template. In that case,
+the content of the body of the `t-call` directive is available as a special
+magic variable `0`:
+
+```xml
+<t t-name="other-template">
+    This template was called with content:
+    <t t-raw="0"/>
+</t>
+
+<div t-name="main-template">
+    <t t-call="other-template">
+        <em>content</em>
+    </t>
+</div>
+```
+
+will result in :
+
+```xml
+<div>
+    This template was called with content:
+    <em>content</em>
+</div>
+```
+
+### Translations
+
+By default, QWeb specify that templates should be translated. If this behaviour
+is not wanted, there is a `t-translation` directive which can turn off
+translations (if it is set to the `off` value), with the following rules:
+
+- each text node will be replaced with its translation,
+- each of the following attribute values will be translated as well: `title`,
+  `placeholder`, `label` and `alt`,
+- translating text nodes can be disabled with the special attribute `t-translation`,
+  if its value is `off`.
+
+See [here](qweb_engine.md#translations) for more information on how to setup a
+translate function in Owl QWeb.
+
+### Debugging
+
+The javascript QWeb implementation provides two useful debugging directives:
+
+`t-debug` adds a debugger statement during template rendering:
+
+```xml
+<t t-if="a_test">
+    <t t-debug="">
+</t>
+```
+
+will stop execution if the browser dev tools are open.
+
+`t-log` takes an expression parameter, evaluates the expression during rendering and logs its result with console.log:
+
+```xml
+<t t-set="foo" t-value="42"/>
+<t t-log="foo"/>
+```
+
+will print 42 to the console.

doc/reference/router.md

@@ -0,0 +1,181 @@
+# 🦉 Router 🦉
+
+## Content
+
+- [Overview](#overview)
+- [Example](#example)
+- [Reference](#reference)
+  - [Route Definition](#route-definition)
+  - [Router](#router)
+  - [Navigation Guards](#navigation-guards)
+  - [RouteComponent](#routecomponent)
+  - [Link](#link)
+
+## Overview
+
+It is often useful to organize an application around urls. If the application is
+a single page application, then we need a way to manage those urls in the browser.
+This is why there are many different routers for different frameworks. A generic
+router can do the job just fine, but a specialized router for Owl can give a
+better developer experience.
+
+The Owl router support the following features:
+
+- `history` or `hash` mode
+- declarative routes
+- route redirection
+- navigation guards
+- parameterized routes
+- a `<Link/>` component
+- a `<RouteComponent/>` component
+
+Note that it is still in early stage of developments, and there are probably
+still some issues.
+
+## Example
+
+To use the Owl router, there are some steps that needs to be done:
+
+- declare some routes
+- create a router
+- add it to the environment
+
+```js
+async function protectRoute({ env, to }) {
+  if (!env.session.authUser) {
+    env.session.setNextRoute(to.name);
+    return { to: "SIGN_IN" };
+  }
+  return true;
+}
+
+export const ROUTES = [
+  { name: "LANDING", path: "/", component: Landing },
+  { name: "TASK", path: "/tasks/{{id}}", component: Task },
+  { name: "SIGN_UP", path: "/signup", component: SignUp },
+  { name: "SIGN_IN", path: "/signin", component: SignIn },
+  { name: "ADMIN", path: "/admin", component: Admin, beforeRouteEnter: protectRoute },
+  { name: "ACCOUNT", path: "/account", component: Account, beforeRouteEnter: protectRoute },
+  { name: "UNKNOWN", path: "*", redirect: { to: "LANDING" } }
+];
+
+function makeEnvironment() {
+    ...
+    const env = { qweb };
+    env.session = new Session(env);
+    env.router = new owl.router.Router(env, ROUTES);
+    await env.router.start();
+    return env;
+}
+
+App.env = makeEnvironment();
+// create root component here
+```
+
+Notice that the router needs to be started. This is an asynchronous operation
+because it needs to apply the potential navigation guards on the current route
+(which may or may not mean that the application is redirected to another route).
+
+## Reference
+
+### Route definition
+
+A route need to be defined as an object with the following keys:
+
+- `name` (optional): a (unique) string useful to identify the current route. If not
+  given, it will be assigned an automatic name,
+- `path`: a string describing the url. It can be static: `/admin` or dynamic: `/users/{{id}}`.
+  It also can be `*`, to catch all remaining routes.
+- `component` (optional): an Owl component that will be used by the `t-routecomponent`
+  directive if the route is active
+- `redirect` (optional): should be destination object (with optional keys `path`, `to` and `params`) if given, the application will be redirected to the destination whenever we match this route
+- `beforeRouteEnter`: defines a [navigation guard](#navigation-guards).
+
+### `Router`
+
+The `Router` constructor takes three arguments:
+
+- `env`: a valid environment,
+- a list of routes,
+- an optional object (with the only key `mode` which can be `history` (default
+  value) or `hash`).
+
+`history` will use the browser [History API](https://developer.mozilla.org/en-US/docs/Web/API/History_API) as the mechanism to manage URL.\
+Example: `https://yourdomain.tld/my_custom_route`.\
+For this mechanism to work, you need a way to configure your web server accordingly.
+
+`hash` will manipulate the hash of the URL.\
+Example: `https://yourdomain.tld/index.html#/my_custom_route`.
+
+```js
+const ROUTES = [...];
+const router = new owl.router.Router(env, ROUTES, {mode: 'history'});
+```
+
+Note that the route are defined in a list, and the order matters: the router
+tries to find a match by going down the list.
+
+The router needs to be added to the environment in the `router` sub key.
+
+Once a router is created, it needs to be started. This is necessary to initialize
+its current state to the current URL (and also, to potentially apply any
+navigation guards and/or redirecting).
+
+```js
+await router.start();
+```
+
+Once started, the router will keep track of the current url and reflect its
+value in two keys:
+
+- `router.currentRoute`
+- `router.currentParams`
+
+The router also has a `navigate` method, useful to programmatically change the
+application to another state (and the url):
+
+```js
+router.navigate({ to: "USER", params: { id: 51 } });
+```
+
+### Navigation Guards
+
+Navigation guards are very useful to be able to execute some business logic/
+perform some actions or redirect to other routes whenever the application is
+entering a new route. For example, the following guard checks if there is an
+authenticated user, and if it is not the case, redirect to the sign in route.
+
+```js
+async function protectRoute({ env, to }) {
+  if (!env.session.authUser) {
+    env.session.setNextRoute(to.name);
+    return { to: "SIGN_IN" };
+  }
+  return true;
+}
+```
+
+A navigation guard is a function that returns a promise, which either resolves
+to `true` (the navigation is accepted), or to another destination object.
+
+### `RouteComponent`
+
+The `RouteComponent` component directs Owl to render the component associated
+to the currently active route (if any):
+
+```xml
+<div t-name="App">
+    <NavBar />
+    <RouteComponent />
+</div>
+```
+
+### `Link`
+
+The `Link` component is a Owl component which render as a `<a>` tag with any
+content. It will compute the proper href from its props, and allow Owl to
+properly navigate to a given url if clicked on it.
+
+```xml
+<Link to="'HOME'">Home</Link>
+```

doc/reference/store.md

@@ -0,0 +1,337 @@
+# 🦉 Store 🦉
+
+## Content
+
+- [Overview](#overview)
+- [Example](#example)
+- [Reference](#reference)
+  - [Store](#store)
+  - [Actions](#actions)
+  - [Getters](#getters)
+  - [Connecting a Component](#connecting-a-component)
+  - [`useStore`](#usestore)
+  - [`useDispatch`](#usedispatch)
+  - [`useGetters`](#usegetters)
+  - [Semantics](#semantics)
+  - [Good Practices](#good-practices)
+
+## Overview
+
+Managing the state in an application is not an easy task. In some cases, the
+state of an application can be part of the component tree, in a natural way.
+However, there are situations where some parts of the state need to be displayed
+in various parts of the user interface, and then, it is not obvious which
+component should own which part of the state.
+
+Owl's solution to this issue is a centralized store. It is a class that owns
+some (or all) state, and lets the developer update it in a structured way, with
+`actions`. Owl components can then connect to the store, and will be updated if
+necessary.
+
+Note: Owl store is inspired by React Redux and VueX.
+
+## Example
+
+Here is what a simple store looks like:
+
+```js
+const actions = {
+  addTodo({ state }, message) {
+    state.todos.push({
+      id: state.nextId++,
+      message,
+      isCompleted: false
+    });
+  }
+};
+
+const state = {
+  todos: [],
+  nextId: 1
+};
+
+const store = new owl.Store({ state, actions });
+store.on("update", null, () => console.log(store.state));
+
+// updating the state
+store.dispatch("addTodo", "fix all bugs");
+```
+
+This example shows how a store can be defined and used. Note that in most cases,
+actions will be dispatched by connected components.
+
+## Reference
+
+### `Store`
+
+The store is a simple [`owl.EventBus`](event_bus.md) that triggers `update` events
+whenever its state is changed. Note that these events are triggered only after a
+microtask tick, so only one event will be triggered for any number of state changes in a
+call stack.
+
+Also, it is important to mention that the state is observed (with an `owl.Observer`),
+which is the reason why it is able to know if it was changed. See the
+[Observer](observer.md)'s documentation for more details.
+
+The `Store` class is quite small. It has two public methods:
+
+- its constructor
+- `dispatch`
+
+The constructor takes a configuration object with four (optional) keys:
+
+- the initial state
+- the actions
+- the getters
+- the environment
+
+```javascript
+const config = {
+  state,
+  actions,
+  getters,
+  env
+};
+const store = new Store(config);
+```
+
+### Actions
+
+Actions are used to coordinate state changes. It can be used for both synchronous
+and asynchronous logic.
+
+```js
+const actions = {
+  async login({ state }, info) {
+    state.loginState = "pending";
+    try {
+      const loginInfo = await doSomeRPC("/login/", info);
+      state.loginState = loginInfo;
+    } catch (e) {
+      state.loginState = "error";
+    }
+  }
+};
+```
+
+The first argument to an action method is an object with four keys:
+
+- `state`: the current state of the store content,
+- `dispatch`: a function that can be used to dispatch other actions,
+- `getters`: an object containing all getters defined in the store,
+- `env`: the current environment. This is useful sometimes, in particular if
+  an action needs to apply some side effects (such as performing an rpc), and
+  the `rpc` method is located in the environment.
+
+Actions are called with the `dispatch` method on the store, and can receive an
+arbitrary number of arguments.
+
+```js
+store.dispatch("login", someInfo);
+```
+
+Note that anything returned by an action will also be returned by the `dispatch`
+call.
+
+Also, it is important to be aware that we need to be careful with asynchronous
+logic. Each state change will potentially trigger a rerendering, so we need to
+make sure that we do not have a partially corrupted state. Here is an example that
+is likely not a good idea:
+
+```javascript
+const actions = {
+  async fetchSomeData({ state }, recordId) {
+    state.recordId = recordId;
+    const data = await doSomeRPC("/read/", recordId);
+    state.recordData = data;
+  }
+};
+```
+
+In the previous example, there is a period of time in which the state has a
+`recordId` which does not correspond to the `recordData`. It is more likely that
+we want an atomic update: updating the `recordId` at the same time as the `recordData`
+values:
+
+```javascript
+const actions = {
+  async fetchSomeData({ state }, recordId) {
+    const data = await doSomeRPC("/read/", recordId);
+    state.recordId = recordId;
+    state.recordData = data;
+  }
+};
+```
+
+### Getters
+
+Usually, data contained in the store will be stored in a normalized way. For
+example,
+
+```js
+{
+    posts: [{id: 11, authorId: 4, content: 'Greetings'}],
+    authors: [{id: 4, name: 'John'}]
+}
+```
+
+However, the user interface will probably need some denormalized data like
+
+```js
+{id: 11, author: {id: 4, name: 'John'}, content: 'Greetings'}
+```
+
+This is what `getters` are for: they give a centralized way to process and
+transform the data contained in the store.
+
+```js
+const getters = {
+  getPost({ state }, id) {
+    const post = state.posts.find(p => p.id === id);
+    const author = state.authors.find(a => a.id === post.id);
+    return {
+      id,
+      author,
+      content: post.content
+    };
+  }
+};
+
+// somewhere else
+const post = store.getters.getPost(id);
+```
+
+Getters take _at most_ one argument.
+
+Note that getters are not cached.
+
+### Connecting a Component
+
+At some point, we need a way to interact with the store from a component. This
+can be done with the help of the three store hooks:
+
+- [`useStore`](#usestore) to subscribe a component to some part of the store state,
+- [`useDispatch`](#usedispatch) to get a reference to a dispatch function,
+- [`useGetters`](#usegetters) to get a reference to the getters defined in the store.
+
+Assume we have this store:
+
+```javascript
+const actions = {
+  increment({ state }, val) {
+    state.counter.value += val;
+  }
+};
+
+const state = {
+  counter: { value: 0 }
+};
+const store = new owl.Store({ state, actions });
+```
+
+A counter component can then select this value and dispatch an action like this:
+
+```js
+class Counter extends Component {
+  counter = useStore(state => state.counter);
+  dispatch = useDispatch();
+}
+
+const counter = new Counter({ store, qweb });
+```
+
+```xml
+<button t-name="Counter" t-on-click="dispatch('increment')">
+  Click Me! [<t t-esc="counter.value"/>]
+</button>
+```
+
+### `useStore`
+
+The `useStore` hook is used to select some part of the store state. It accepts
+two arguments:
+
+- a selector function, which takes the store state as first argument (and the
+  component props as second argument) and which must return the part of the
+  store state that will be made available and observed for changes,
+- optionally, an object which can have the following optional keys:
+  - a `store` key containing a store object if we want to use another store than
+    the default store,
+  - an `isEqual` key containing an equality function if we want to specialize
+    the comparison (the function must accept two arguments: the previous result
+    and the new result, and must return whether they are equal),
+  - and an `onUpdate` key containing an update function if we want to execute an
+    arbitrary code every time the selected state changes (the function will
+    receive one argument, the new result, and can execute arbitrary code).
+
+If the `useStore` selector returns a sub part of the store state, the component
+will only be rerendered whenever this part of the state changes. Otherwise, it
+will perform a strict equality check (unless the `isEqual` option is defined,
+then it will call it) and will update the component every time this check fails.
+
+Note that if the selector function returns a primitive type, the result of
+`useStore` will be immutable and it will not react to changes. In this case, it
+is important to define the `onUpdate` option to properly update the value
+manually when it changes.
+
+Also, the return value from `useStore` is not supposed to be modified. The store
+state should only be updated with actions.
+
+### `useDispatch`
+
+The `useDispatch` hook is useful when a component needs to be able to dispatch
+actions. It takes an optional argument, which is a store. If not given, it will
+use the store in the environment.
+
+Note that a component does not need to be connected in any other way to the store.
+For example:
+
+```js
+class DoSomethingButton extends Component {
+  static template = xml`<button t-on-click="dispatch('something')">Click</button>`;
+  dispatch = useDispatch();
+}
+```
+
+### `useGetters`
+
+The `useGetters` hook is useful when a component needs to be able to use the
+getters defined in a store. It takes an optional argument, which is a store. If
+not given, it will use the store in the environment.
+
+Note that a component does not need to be connected in any other way to the store.
+For example:
+
+```js
+class InfoButton extends Component {
+  static template = xml`<span><t t-esc="getters.somevalue()"></span>`;
+  getters = useGetters();
+}
+```
+
+### Semantics
+
+The `Store` class and the `useStore` hook try to be smart and to optimize as much
+as possible the rendering and update process. What is important to know is:
+
+- components are always updated in the order of their creation (so, parent
+  before children),
+- they are updated only if they are in the DOM,
+- if a parent is asynchronous, the system will wait for it to complete its
+  update before updating other components,
+- in general, updates are not coordinated. This is not a problem for synchronous
+  components, but if there are many asynchronous components, this could lead to
+  a situation where some part of the UI is updated and some other part of the UI is
+  not updated.
+
+### Good Practices
+
+- avoid asynchronous components as much as possible. Asynchronous components
+  lead to situations where parts of the UI is not updated immediately,
+- do not be afraid to connect many components, parent or children if needed. For
+  example, a `MessageList` component could get a list of ids in its `useStore`
+  call and a `Message` component could get the data of its own
+  message,
+- since the `useStore` function is called for each connected component,
+  for each state update, it is important to make sure that these functions are
+  as fast as possible.

doc/reference/tags.md

@@ -0,0 +1,54 @@
+# 🦉 Tags 🦉
+
+## Content
+
+- [Overview](#overview)
+- [`xml` tag](#xml-tag)
+
+## Overview
+
+Tags are very small helpers to make it easy to write inline templates. There is
+only one currently available tag: `xml`, but we plan to add other tags later,
+such as a `css` tag, which will be used to write [single file components](../tooling.md#single-file-component).
+
+## XML tag
+
+Without tags, creating a standalone component would look like this:
+
+```js
+import { Component } from 'owl'
+
+const name = 'some-unique-name';
+const template = `
+    <div>
+        <span t-if="somecondition">text</span>
+        <button t-on-click="someMethod">Click</button>
+    </div>
+`;
+QWeb.registerTemplate(name, template);
+
+class MyComponent extends Component {
+    static template = name;
+
+    ...
+}
+```
+
+With tags, this process is slightly simplified. The name is uniquely generated,
+and the template is automatically registered:
+
+```js
+const { Component } = owl;
+const { xml } = owl.tags;
+
+class MyComponent extends Component {
+    static template = xml`
+        <div>
+            <span t-if="somecondition">text</span>
+            <button t-on-click="someMethod">Click</button>
+        </div>
+    `;
+
+    ...
+}
+```

doc/reference/utils.md

@@ -0,0 +1,148 @@
+# 🦉 Utils 🦉
+
+Owl export a few useful utility functions, to help with common issues. Those
+functions are all available in the `owl.utils` namespace.
+
+## Content
+
+- [`whenReady`](#whenready): executing code when DOM is ready
+- [`loadJS`](#loadjs): loading script files
+- [`loadFile`](#loadfile): loading a file (useful for templates)
+- [`escape`](#escape): sanitizing strings
+- [`debounce`](#debounce): limiting rate of function calls
+- [`shallowEqual`](#shallowequal): shallow object comparison
+
+## `whenReady`
+
+The function `whenReady` returns a `Promise` resolved when the DOM is ready (if
+not ready yet, resolved directly otherwise). If called with a callback as
+argument, it executes it as soon as the DOM ready (or directly).
+
+```js
+Promise.all([loadFile("templates.xml"), owl.utils.whenReady()]).then(function([templates]) {
+  const qweb = new owl.QWeb({ templates });
+  const app = new App({ qweb });
+  app.mount(document.body);
+});
+```
+
+or alternatively:
+
+```js
+owl.utils.whenReady(function() {
+  const qweb = new owl.QWeb();
+  const app = new App({ qweb });
+  app.mount(document.body);
+});
+```
+
+## `loadJS`
+
+`loadJS` takes a url (string) for a javascript resource, and loads it (by adding
+a script tag in the document head). It returns a promise, so the caller can
+properly reacts when it is ready. Also, it is smart: it maintains a list of urls
+previously loaded (or currently being loaded), and prevent doing twice the work.
+
+For example, it is useful for lazy loading external libraries:
+
+```js
+class MyComponent extends owl.Component {
+  willStart() {
+    return owl.utils.loadJS("/static/libs/someLib.js");
+  }
+}
+```
+
+## `loadFile`
+
+`loadFile` is a helper function to fetch a file. It simply
+performs a `GET` request and returns the resulting string in a promise. The
+initial usecase for this function is to load a template file. For example:
+
+```js
+async function makeEnv() {
+  const templates = await owl.utils.loadFile("templates.xml");
+  const qweb = new owl.QWeb({ templates });
+  return { qweb };
+}
+```
+
+Note that unlike `loadJS`, this function returns the content of the file as a
+string. It does not add a `script` tag or any other side effect.
+
+## `escape`
+
+Sometimes, we need to display dynamic data (for example user-generated data) in
+the user interface. If this is done by a `QWeb` template, it is not an issue:
+
+```xml
+    <div><t t-esc="user.data"/></div>
+```
+
+The `QWeb` engine will create a `div` node and add the content of the `user.data`
+string as a text node, so the web browser will not parse it as html. However,
+it may be a problem if this is done with some javascript code like this:
+
+```js
+class BadComponent extends Component {
+  // some template with a ref to a div
+  // some code ...
+
+  mounted() {
+    this.divRef.el.innerHTML = this.state.value;
+  }
+}
+```
+
+In this case, the content of the `div` will be parsed as html, which may inject
+unwanted behaviour. To fix this, the `escape` function will simply transform a
+string into an escaped version of the same string, which will be properly displayed
+by the browser, but which will not be parsed as html (for example, `"<ok>"` is
+escaped to the string: `"&lt;ok&gt;"`). So, the bad example above can be fixed
+with the following change:
+
+```js
+this.divRef.el.innerHTML = owl.utils.escape(this.state.value);
+```
+
+## `debounce`
+
+The `debounce` function is useful when we want to limit the number of times some
+function/action is perfomed. For example, this may be useful to prevent issue
+with people double clicking on a button.
+
+It takes three arguments:
+
+- `func` (function): this is the function that will be rate limited
+- `wait` (number): this is the number of milliseconds that we want to use to
+  rate limit the function `func`
+- `immediate` (optional, boolean, default=false): if `immediate` is true, the
+  function will be triggered immediately (leading edge of the interval). If false,
+  the function will be triggered at the end (trailing edge).
+
+It returns a function. For example:
+
+```js
+const debounce = owl.utils.debounce;
+window.addEventListener("mousemove", debounce(doSomething, 100));
+```
+
+As this example shows, it is usualy useful for event handlers which are triggered
+very quickly, such as `scroll` or `mousemove` events.
+
+## `shallowEqual`
+
+This function checks if two objects have the same values assigned to each keys:
+
+```js
+shallowEqual({ a: 1, b: 2 }, { a: 1, b: 2 }); // true
+shallowEqual({ a: 1, b: 2 }, { a: 1, b: 3 }); // false
+```
+
+However, for performance reasons, it assumes that the two objects have the same
+keys. If we are in a situation where this is not guaranteed, the following code
+will work:
+
+```js
+const completeShallowEqual = (a, b) => shallowEqual(a, b) && shallowEqual(b, a);
+```

doc/state_management.md

@@ -1,8 +0,0 @@
-# OWL: State Management
-
-Managing the state in an application is not an easy task. Many different
-architectures/designs/systems/... have been created. We propose here to use
-the idea of a central store.
-
-- Store
-- connect

doc/tooling.md

@@ -0,0 +1,80 @@
+# 🦉 Tooling 🦉
+
+## Content
+
+- [Overview](#overview)
+- [Playground](#playground)
+- [Benchmarks](#benchmarks)
+- [Single File Component](#single-file-component)
+
+## Overview
+
+To help work with/improve/learn OWL, there are a few extras tools/settings.
+
+- development mode: enable better error reporting for the developer
+- a playground application: a space to experiment and learn Owl.
+- a benchmarks application: allow comparison with a few common frameworks
+
+The two applications are available in the `tools/` folder, and can be accessed
+by using a static http server. A simple python
+server is available in `server.py`. There is also a npm script to start it:
+`npm run tools` (and its version with a watcher: `npm run tools:watch`).
+
+## Playground
+
+The playground is an important application designed to help learning and
+experimenting with Owl. The last published version of Owl can be tested [online](https://odoo.github.io/owl/playground/).
+
+It is an application similar to `jsFiddle`, but specialized for Owl: there are
+three tabs (`js`, `css` and `xml`), and a simple button `Run` to execute that
+code in an iframe.
+
+## Benchmarks
+
+Note: This is more an internal tool, useful for people working on Owl.
+
+The benchmarks application is a very small application, implemented in different
+frameworks, and in different versions of Owl. This is a simple internal tool,
+useful to compare various performance metrics on some tasks.
+
+## Single File Component
+
+It is very useful to group code by feature instead of by type of file. It makes
+it easier to scale application to larger size.
+
+To do so, Owl currently has a small helper that makes it easy to define a
+template inside a javascript (or typescript) file: the [`xml`](reference/tags.md#xml-tag)
+helper. With this, a template is automatically registered to [QWeb](reference/qweb_engine.md).
+
+This means that the template and the javascript code can be defined in the same
+file. It is not currently possible to add css to the same file, but Owl may
+get a `css` tag helper later.
+
+```js
+const { Component } = owl;
+const { xml } = owl.tags;
+
+// -----------------------------------------------------------------------------
+// TEMPLATE
+// -----------------------------------------------------------------------------
+const TEMPLATE = xml/* xml */ `
+	<div class="main two-columns">
+		<Sidebar/>
+		<Content />
+	</div>`;
+
+// -----------------------------------------------------------------------------
+// CODE
+// -----------------------------------------------------------------------------
+class MyComponent extends Component {
+  static template = TEMPLATE;
+  static components = { Sidebar, Content };
+
+  // rest of component...
+}
+```
+
+Note that the above example has an inline xml comment, just after the `xml` call.
+This is useful for some editor plugins, such as the VS Code addon
+`Comment tagged template`, which, if installed, add syntax highlighting to the
+content of the template string.

doc/tutorial.md

@@ -1,3 +0,0 @@
-# Tutorial
-
-todo...

examples/benchmarks/app.css

@@ -1,45 +0,0 @@
-.main {
-  position: absolute;
-  left: 0;
-  right: 0;
-  top: 0;
-  bottom: 0;
-
-  display: grid;
-  grid-template-columns: 200px 1fr;
-}
-
-.left-thing {
-  background-color: gray;
-  padding: 20px;
-}
-
-.left-thing button {
-  width: 100%;
-}
-
-.left-thing .counter span {
-  color: white;
-}
-
-.left-thing .counter button {
-  width: 40px;
-}
-
-.right-thing {
-  padding: 20px;
-  overflow: auto;
-}
-
-/* Message widget */
-.message .author {
-  font-weight: bold;
-}
-
-.message {
-  width: 400px;
-  background-color: lightblue;
-  margin: 10px 5px;
-  border-radius: 5px;
-  padding: 5px;
-}

examples/benchmarks/app.js

@@ -1,55 +0,0 @@
-import { Message } from "./message.js";
-import { messages } from "./data.js";
-
-const template = `
-    <div class="main">
-        <div class="left-thing">
-            <div class="counter">
-                <button t-on-click="increment(-1)">-</button>
-                <span style="font-weight:bold">Value: <t t-esc="state.messages.length"/></span>
-                <button t-on-click="increment(1)">+</button>
-            </div>
-            <button t-on-click="setMessageCount(10)">10 messages</button>
-            <button t-on-click="setMessageCount(20)">20 messages</button>
-            <button t-on-click="setMessageCount(500)">500 messages</button>
-            <button t-on-click="setMessageCount(1000)">1000 messages</button>
-            <button t-on-click="setMessageCount(5000)">5000 messages</button>
-            <button t-on-click="setMessageCount(15000)">15000 messages</button>
-        </div>
-        <div class="right-thing">
-            <div class="content">
-                <t t-foreach="state.messages" t-as="message">
-                    <t t-widget="Message" t-att-key="message.id" t-props="message" t-on-remove_message="removeMessage"/>
-                </t>
-            </div>
-        </div>
-    </div>`;
-
-export class App extends owl.core.Component {
-  constructor(parent, props) {
-    super(parent, props);
-    this.inlineTemplate = template;
-    this.widgets = { Message };
-    this.state = {
-      messages: messages.slice(0, 10)
-    };
-  }
-
-  setMessageCount(n) {
-    this.updateState({
-      messages: messages.slice(0, n)
-    });
-  }
-
-  removeMessage(data) {
-    const index = messages.findIndex(m => m.id === data.id);
-    const n = this.state.messages.length;
-    messages.splice(index, 1);
-    this.updateState({ messages: messages.slice(0, n - 1) });
-  }
-
-  increment(delta) {
-    const n = this.state.messages.length + delta;
-    this.setMessageCount(n);
-  }
-}

examples/benchmarks/counter.js

@@ -1,18 +0,0 @@
-export class Counter extends owl.core.Component {
-  inlineTemplate = `
-    <div>
-      <button t-on-click="increment(-1)">-</button>
-      <span style="font-weight:bold">Value: <t t-esc="state.counter"/></span>
-      <button t-on-click="increment(1)">+</button>
-    </div>`;
-  constructor(parent, props) {
-    super(parent, props);
-    this.state = {
-      counter: props.initialState || 0
-    };
-  }
-
-  increment(delta) {
-    this.updateState({ counter: this.state.counter + delta });
-  }
-}

examples/benchmarks/data.js

@@ -1,22 +0,0 @@
-export const messages = [];
-
-const authors = ["Aaron", "David", "Vincent"];
-const content = [
-  "Lorem ipsum dolor sit amet",
-  "Sed ut perspiciatis unde omnis iste natus error sit voluptatem",
-  "Excepteur sint occaecat cupidatat non proident"
-];
-
-function chooseRandomly(array) {
-  const index = Math.floor(Math.random() * array.length);
-  return array[index];
-}
-
-for (let i = 1; i < 16000; i++) {
-  messages.push({
-    id: i,
-    author: chooseRandomly(authors),
-    msg: `${i}: ${chooseRandomly(content)}`,
-    likes: 0
-  });
-}

examples/benchmarks/index.html

@@ -1,16 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-  <head>
-    <meta charset="utf-8">
-    <title>Odoo WebCore Benchmarks App</title>
-    <link rel="icon" href="data:,">
-
-    <!-- Application JS/CSS -->
-    <script src="/owl.js"></script>
-    <link rel="stylesheet" href="/app.css">
-    <script type="module" src="/main.js"></script>
-
-  </head>
-  <body>
-  </body>
-</html>

examples/benchmarks/main.js

@@ -1,13 +0,0 @@
-import { App } from "./app.js";
-
-function createApp(el) {
-  const env = {
-    qweb: new owl.core.QWeb()
-  };
-  const app = new App(env, { initialState: 13 });
-  app.mount(el);
-}
-
-document.addEventListener("DOMContentLoaded", function() {
-  createApp(document.body);
-});

examples/benchmarks/message.js

@@ -1,22 +0,0 @@
-import { Counter } from "./counter.js";
-
-export class Message extends owl.core.Component {
-  inlineTemplate = `
-    <div class="message">
-        <span class="author"><t t-esc="props.author"/></span>
-        <span class="msg"><t t-esc="props.msg"/></span>
-        <button class="remove" t-on-click="removeMessage">Remove</button>
-        <t t-widget="Counter" t-props="{initialState: props.id}"/>
-    </div>`;
-
-  constructor(parent, props) {
-    super(parent, props);
-    this.widgets = { Counter };
-  }
-
-  removeMessage() {
-    this.trigger("remove_message", {
-      id: this.props.id
-    });
-  }
-}

examples/readme.md

@@ -1,46 +0,0 @@
-# Examples
-
-This project features three example to illustrate how to work with the web-core framework:
-
-- _benchmarks_ is a small application to test large number of widgets,
-- _todoapp_ is the classical todo application (from the todomvc project),
-- _web_ is a rethinking of how the odoo web client could be implemented.
-
-## Benchmarks
-
-This example is just a playground to experiment/showcase some features of the framework, with large number of widgets.
-
-```
-npm run example:benchmarks:build # make a build in dist/examples/
-npm run example:benchmarks:dev   # make a build in dist/examples/, and make a live server to access it
-```
-
-The benchmarks application generates a large number of demo messages, and display them in a list, with a few buttons that can
-be used to alter the number of visible widgets.
-
-Note that each message is itself a widget, with a sub widget. This
-example could be made faster (by not using subwidgets), but the point is to observe/measure the overhead of the Component class.
-
-## Todo App
-
-The Todo App is the classical todo application from _http://todomvc.com/_. It is a good mini application with non trivial data structures and interface updates.
-
-```
-npm run example:todoapp:build # make a build in dist/examples/
-npm run example:todoapp:dev   # make a build in dist/examples/, and make a live server to access it
-```
-
-It is implemented with the Store class (as in redux/vuex).
-
-## Web Client Example
-
-The _web_ example,located in the _examples/web/_ folder is a rethink of what the
-web client could look like if it is ever rebuilt from scratch. It is currently an experiment. But obviously, we hope someday to be able to use this work and
-actually rewrite completely the odoo web client.
-
-```
-npm run example:web:build # make a build in dist/examples/
-npm run example:web:dev   # make a build in dist/examples/, and make a live server to access it
-```
-
-Note that it is currently written in typescript.

examples/todoapp/app.css

@@ -1,376 +0,0 @@
-html,
-body {
-  margin: 0;
-  padding: 0;
-}
-
-button {
-  margin: 0;
-  padding: 0;
-  border: 0;
-  background: none;
-  font-size: 100%;
-  vertical-align: baseline;
-  font-family: inherit;
-  font-weight: inherit;
-  color: inherit;
-  -webkit-appearance: none;
-  appearance: none;
-  -webkit-font-smoothing: antialiased;
-  -moz-osx-font-smoothing: grayscale;
-}
-
-body {
-  font: 14px "Helvetica Neue", Helvetica, Arial, sans-serif;
-  line-height: 1.4em;
-  background: #f5f5f5;
-  color: #4d4d4d;
-  min-width: 230px;
-  max-width: 550px;
-  margin: 0 auto;
-  -webkit-font-smoothing: antialiased;
-  -moz-osx-font-smoothing: grayscale;
-  font-weight: 300;
-}
-
-:focus {
-  outline: 0;
-}
-
-.hidden {
-  display: none;
-}
-
-.todoapp {
-  background: #fff;
-  margin: 130px 0 40px 0;
-  position: relative;
-  box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.2), 0 25px 50px 0 rgba(0, 0, 0, 0.1);
-}
-
-.todoapp input::-webkit-input-placeholder {
-  font-style: italic;
-  font-weight: 300;
-  color: #e6e6e6;
-}
-
-.todoapp input::-moz-placeholder {
-  font-style: italic;
-  font-weight: 300;
-  color: #e6e6e6;
-}
-
-.todoapp input::input-placeholder {
-  font-style: italic;
-  font-weight: 300;
-  color: #e6e6e6;
-}
-
-.todoapp h1 {
-  position: absolute;
-  top: -155px;
-  width: 100%;
-  font-size: 100px;
-  font-weight: 100;
-  text-align: center;
-  color: rgba(175, 47, 47, 0.15);
-  -webkit-text-rendering: optimizeLegibility;
-  -moz-text-rendering: optimizeLegibility;
-  text-rendering: optimizeLegibility;
-}
-
-.new-todo,
-.edit {
-  position: relative;
-  margin: 0;
-  width: 100%;
-  font-size: 24px;
-  font-family: inherit;
-  font-weight: inherit;
-  line-height: 1.4em;
-  border: 0;
-  color: inherit;
-  padding: 6px;
-  border: 1px solid #999;
-  box-shadow: inset 0 -1px 5px 0 rgba(0, 0, 0, 0.2);
-  box-sizing: border-box;
-  -webkit-font-smoothing: antialiased;
-  -moz-osx-font-smoothing: grayscale;
-}
-
-.new-todo {
-  padding: 16px 16px 16px 60px;
-  border: none;
-  background: rgba(0, 0, 0, 0.003);
-  box-shadow: inset 0 -2px 1px rgba(0, 0, 0, 0.03);
-}
-
-.main {
-  position: relative;
-  z-index: 2;
-  border-top: 1px solid #e6e6e6;
-}
-
-.toggle-all {
-  width: 1px;
-  height: 1px;
-  border: none; /* Mobile Safari */
-  opacity: 0;
-  position: absolute;
-  right: 100%;
-  bottom: 100%;
-}
-
-.toggle-all + label {
-  width: 60px;
-  height: 34px;
-  font-size: 0;
-  position: absolute;
-  top: -52px;
-  left: -13px;
-  -webkit-transform: rotate(90deg);
-  transform: rotate(90deg);
-}
-
-.toggle-all + label:before {
-  content: "❯";
-  font-size: 22px;
-  color: #e6e6e6;
-  padding: 10px 27px 10px 27px;
-}
-
-.toggle-all:checked + label:before {
-  color: #737373;
-}
-
-.todo-list {
-  margin: 0;
-  padding: 0;
-  list-style: none;
-}
-
-.todo-list li {
-  position: relative;
-  font-size: 24px;
-  border-bottom: 1px solid #ededed;
-}
-
-.todo-list li:last-child {
-  border-bottom: none;
-}
-
-.todo-list li.editing {
-  border-bottom: none;
-  padding: 0;
-}
-
-.todo-list li.editing .edit {
-  display: block;
-  width: calc(100% - 43px);
-  padding: 12px 16px;
-  margin: 0 0 0 43px;
-}
-
-.todo-list li.editing .view {
-  display: none;
-}
-
-.todo-list li .toggle {
-  text-align: center;
-  width: 40px;
-  /* auto, since non-WebKit browsers doesn't support input styling */
-  height: auto;
-  position: absolute;
-  top: 0;
-  bottom: 0;
-  margin: auto 0;
-  border: none; /* Mobile Safari */
-  -webkit-appearance: none;
-  appearance: none;
-}
-
-.todo-list li .toggle {
-  opacity: 0;
-}
-
-.todo-list li .toggle + label {
-  /*
-		Firefox requires `#` to be escaped - https://bugzilla.mozilla.org/show_bug.cgi?id=922433
-		IE and Edge requires *everything* to be escaped to render, so we do that instead of just the `#` - https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/7157459/
-	*/
-  background-image: url("data:image/svg+xml;utf8,%3Csvg%20xmlns%3D%22http%3A//www.w3.org/2000/svg%22%20width%3D%2240%22%20height%3D%2240%22%20viewBox%3D%22-10%20-18%20100%20135%22%3E%3Ccircle%20cx%3D%2250%22%20cy%3D%2250%22%20r%3D%2250%22%20fill%3D%22none%22%20stroke%3D%22%23ededed%22%20stroke-width%3D%223%22/%3E%3C/svg%3E");
-  background-repeat: no-repeat;
-  background-position: center left;
-}
-
-.todo-list li .toggle:checked + label {
-  background-image: url("data:image/svg+xml;utf8,%3Csvg%20xmlns%3D%22http%3A//www.w3.org/2000/svg%22%20width%3D%2240%22%20height%3D%2240%22%20viewBox%3D%22-10%20-18%20100%20135%22%3E%3Ccircle%20cx%3D%2250%22%20cy%3D%2250%22%20r%3D%2250%22%20fill%3D%22none%22%20stroke%3D%22%23bddad5%22%20stroke-width%3D%223%22/%3E%3Cpath%20fill%3D%22%235dc2af%22%20d%3D%22M72%2025L42%2071%2027%2056l-4%204%2020%2020%2034-52z%22/%3E%3C/svg%3E");
-}
-
-.todo-list li label {
-  word-break: break-all;
-  padding: 15px 15px 15px 60px;
-  display: block;
-  line-height: 1.2;
-  transition: color 0.4s;
-}
-
-.todo-list li.completed label {
-  color: #d9d9d9;
-  text-decoration: line-through;
-}
-
-.todo-list li .destroy {
-  display: none;
-  position: absolute;
-  top: 0;
-  right: 10px;
-  bottom: 0;
-  width: 40px;
-  height: 40px;
-  margin: auto 0;
-  font-size: 30px;
-  color: #cc9a9a;
-  margin-bottom: 11px;
-  transition: color 0.2s ease-out;
-}
-
-.todo-list li .destroy:hover {
-  color: #af5b5e;
-}
-
-.todo-list li .destroy:after {
-  content: "×";
-}
-
-.todo-list li:hover .destroy {
-  display: block;
-}
-
-.todo-list li .edit {
-  display: none;
-}
-
-.todo-list li.editing:last-child {
-  margin-bottom: -1px;
-}
-
-.footer {
-  color: #777;
-  padding: 10px 15px;
-  height: 20px;
-  text-align: center;
-  border-top: 1px solid #e6e6e6;
-}
-
-.footer:before {
-  content: "";
-  position: absolute;
-  right: 0;
-  bottom: 0;
-  left: 0;
-  height: 50px;
-  overflow: hidden;
-  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.2), 0 8px 0 -3px #f6f6f6,
-    0 9px 1px -3px rgba(0, 0, 0, 0.2), 0 16px 0 -6px #f6f6f6,
-    0 17px 2px -6px rgba(0, 0, 0, 0.2);
-}
-
-.todo-count {
-  float: left;
-  text-align: left;
-}
-
-.todo-count strong {
-  font-weight: 300;
-}
-
-.filters {
-  margin: 0;
-  padding: 0;
-  list-style: none;
-  position: absolute;
-  right: 0;
-  left: 0;
-}
-
-.filters li {
-  display: inline;
-}
-
-.filters li a {
-  color: inherit;
-  margin: 3px;
-  padding: 3px 7px;
-  text-decoration: none;
-  border: 1px solid transparent;
-  border-radius: 3px;
-}
-
-.filters li a:hover {
-  border-color: rgba(175, 47, 47, 0.1);
-}
-
-.filters li a.selected {
-  border-color: rgba(175, 47, 47, 0.2);
-}
-
-.clear-completed,
-html .clear-completed:active {
-  float: right;
-  position: relative;
-  line-height: 20px;
-  text-decoration: none;
-  cursor: pointer;
-}
-
-.clear-completed:hover {
-  text-decoration: underline;
-}
-
-.info {
-  margin: 65px auto 0;
-  color: #bfbfbf;
-  font-size: 10px;
-  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.5);
-  text-align: center;
-}
-
-.info p {
-  line-height: 1;
-}
-
-.info a {
-  color: inherit;
-  text-decoration: none;
-  font-weight: 400;
-}
-
-.info a:hover {
-  text-decoration: underline;
-}
-
-/*
-	Hack to remove background from Mobile Safari.
-	Can't use it globally since it destroys checkboxes in Firefox
-*/
-@media screen and (-webkit-min-device-pixel-ratio: 0) {
-  .toggle-all,
-  .todo-list li .toggle {
-    background: none;
-  }
-
-  .todo-list li .toggle {
-    height: 40px;
-  }
-}
-
-@media (max-width: 430px) {
-  .footer {
-    height: 50px;
-  }
-
-  .filters {
-    bottom: 10px;
-  }
-}

examples/todoapp/components/TodoApp.js

@@ -1,60 +0,0 @@
-import { TodoItem } from "./TodoItem.js";
-
-const { Component } = owl.core;
-const { connect } = owl.extras;
-
-const ENTER_KEY = 13;
-
-function mapStateToProps(state) {
-  return { todos: state.todos };
-}
-
-class TodoApp extends Component {
-  template = "todoapp";
-  widgets = { TodoItem };
-  state = { filter: "all" };
-
-  get visibleTodos() {
-    let todos = this.props.todos;
-    if (this.state.filter === "active") {
-      todos = todos.filter(t => !t.completed);
-    }
-    if (this.state.filter === "completed") {
-      todos = todos.filter(t => t.completed);
-    }
-    return todos;
-  }
-
-  get allChecked() {
-    return this.props.todos.every(todo => todo.completed);
-  }
-
-  get remaining() {
-    return this.props.todos.filter(todo => !todo.completed).length;
-  }
-
-  get remainingText() {
-    const items = this.remaining < 2 ? "item" : "items";
-    return ` ${items} left`;
-  }
-
-  addTodo(ev) {
-    if (ev.keyCode === ENTER_KEY) {
-      const title = ev.target.value;
-      if (title.trim()) {
-        this.env.store.dispatch("addTodo", title);
-      }
-      ev.target.value = "";
-    }
-  }
-
-  clearCompleted() {
-    this.env.store.dispatch("clearCompleted");
-  }
-
-  toggleAll() {
-    this.env.store.dispatch("toggleAll", !this.allChecked);
-  }
-}
-
-export default connect(mapStateToProps)(TodoApp);

examples/todoapp/components/TodoItem.js

@@ -1,49 +0,0 @@
-const ENTER_KEY = 13;
-const ESC_KEY = 27;
-
-export class TodoItem extends owl.core.Component {
-  template = "todoitem";
-
-  state = { isEditing: false };
-
-  removeTodo() {
-    this.env.store.dispatch("removeTodo", this.props.id);
-  }
-
-  toggleTodo() {
-    this.env.store.dispatch("toggleTodo", this.props.id);
-  }
-
-  async editTodo() {
-    await this.updateState({ isEditing: true });
-    this.refs.input.value = "";
-    this.refs.input.focus();
-    this.refs.input.value = this.props.title;
-  }
-
-  handleKeyup(ev) {
-    if (ev.keyCode === ENTER_KEY) {
-      this.updateTitle(ev.target.value);
-    }
-    if (ev.keyCode === ESC_KEY) {
-      ev.target.value = this.props.title;
-      this.updateState({ isEditing: false });
-    }
-  }
-
-  handleBlur(ev) {
-    this.updateTitle(ev.target.value);
-  }
-  updateTitle(title) {
-    const value = title.trim();
-    if (!value) {
-      this.removeTodo(this.props.id);
-    } else {
-      this.env.store.dispatch("editTodo", {
-        id: this.props.id,
-        title: value
-      });
-      this.updateState({ isEditing: false });
-    }
-  }
-}

examples/todoapp/index.html

@@ -1,16 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-  <head>
-    <meta charset="utf-8">
-    <title>Odoo Demo App</title>
-    <link rel="icon" href="data:,">
-
-    <!-- Application JS/CSS -->
-    <script src="/owl.js"></script>
-    <link rel="stylesheet" href="/app.css">
-    <script type="module" src="/main.js"></script>
-
-  </head>
-  <body>
-  </body>
-</html>

examples/todoapp/main.js

@@ -1,26 +0,0 @@
-import TodoApp from "./components/TodoApp.js";
-import { makeStore } from "./store.js";
-
-async function makeEnv() {
-  const result = await fetch("templates.xml");
-  if (!result.ok) {
-    throw new Error("Error while fetching xml templates");
-  }
-  let templates = await result.text();
-  templates = templates.replace(/<!--[\s\S]*?-->/g, "");
-  const qweb = new owl.core.QWeb();
-  qweb.loadTemplates(templates);
-  return {
-    qweb,
-    store: makeStore()
-  };
-}
-
-document.addEventListener("DOMContentLoaded", async function() {
-  const env = await makeEnv();
-  const app = new TodoApp(env);
-
-  // for debugging purpose
-  window.app = app;
-  await app.mount(document.body);
-});

examples/todoapp/store.js

@@ -1,75 +0,0 @@
-//------------------------------------------------------------------------------
-// ACTIONS
-//------------------------------------------------------------------------------
-
-const actions = {
-  addTodo({ commit }, title) {
-    commit("addTodo", title);
-  },
-  removeTodo({ commit }, id) {
-    commit("removeTodo", id);
-  },
-  toggleTodo({ state, commit }, id) {
-    const todo = state.todos.find(t => t.id === id);
-    commit("editTodo", { id, completed: !todo.completed });
-  },
-  clearCompleted({ state, commit }) {
-    state.todos
-      .filter(todo => todo.completed)
-      .forEach(todo => {
-        commit("removeTodo", todo.id);
-      });
-  },
-  toggleAll({ state, commit }, completed) {
-    state.todos.forEach(todo => {
-      commit("editTodo", { id: todo.id, completed });
-    });
-  },
-  editTodo({ commit }, { id, title }) {
-    commit("editTodo", { id, title });
-  }
-};
-
-//------------------------------------------------------------------------------
-// MUTATIONS
-//------------------------------------------------------------------------------
-
-const mutations = {
-  addTodo(state, title) {
-    const id = state.nextId++;
-    const todo = { id, title, completed: false };
-    state.todos.push(todo);
-  },
-  removeTodo(state, id) {
-    const index = state.todos.findIndex(t => t.id === id);
-    state.todos.splice(index, 1);
-  },
-  editTodo(state, { id, title, completed }) {
-    const todo = state.todos.find(t => t.id === id);
-    if (title !== undefined) {
-      todo.title = title;
-    }
-    if (completed !== undefined) {
-      todo.completed = completed;
-    }
-  }
-};
-
-//------------------------------------------------------------------------------
-// STORE
-//------------------------------------------------------------------------------
-const LOCALSTORAGE_KEY = "todos-odoo";
-
-export function makeStore() {
-  const todos = JSON.parse(
-    window.localStorage.getItem(LOCALSTORAGE_KEY) || "[]"
-  );
-  const nextId = Math.max(0, ...todos.map(t => t.id || 0)) + 1;
-  const state = { todos, nextId };
-  const store = new owl.extras.Store({ state, actions, mutations });
-  store.on("update", null, () => {
-    const state = JSON.stringify(store.state.todos);
-    window.localStorage.setItem(LOCALSTORAGE_KEY, state);
-  });
-  return store;
-}

examples/todoapp/templates.xml

@@ -1,56 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<templates id="template" xml:space="preserve">
-
-    <section t-name="todoapp" class="todoapp">
-        <!-- header -->
-        <header class="header">
-            <h1>todos</h1>
-            <input class="new-todo" autofocus="true" autocomplete="off" placeholder="What needs to be done?" t-on-keyup="addTodo"/>
-        </header>
-        <!-- main section -->
-        <section class="main" t-if="props.todos.length">
-            <input class="toggle-all" id="toggle-all" type="checkbox" t-att-checked="allChecked" t-on-click="toggleAll"/>
-            <label for="toggle-all"></label>
-            <ul class="todo-list">
-                <t t-foreach="visibleTodos" t-as="todo">
-                    <t t-widget="TodoItem" t-props="todo"/>
-                </t>
-            </ul>
-        </section>
-        <!-- footer -->
-        <footer class="footer" t-if="props.todos.length">
-            <span class="todo-count">
-                <strong>
-                    <t t-esc="remaining"/>
-                </strong>
-                <t t-esc="remainingText"/>
-            </span>
-            <ul class="filters">
-                <li>
-                    <a href="#/all" t-on-click="updateState({filter:'all'})" t-att-class="{selected: state.filter === 'all'}">All</a>
-                </li>
-                <li>
-                    <a href="#/active" t-on-click="updateState({filter:'active'})" t-att-class="{selected: state.filter === 'active'}">Active</a>
-                </li>
-                <li>
-                    <a href="#/completed" t-on-click="updateState({filter:'completed'})" t-att-class="{selected: state.filter === 'completed'}">Completed</a>
-                </li>
-            </ul>
-            <button class="clear-completed" t-if="props.todos.length gt remaining" t-on-click="clearCompleted">
-        Clear completed
-            </button>
-        </footer>
-    </section>
-
-    <li t-name="todoitem" class="todo" t-att-class="{completed: props.completed, editing: state.isEditing}">
-        <div class="view">
-            <input class="toggle" type="checkbox" t-on-change="toggleTodo" t-att-checked="props.completed"/>
-            <label t-on-dblclick="editTodo">
-                <t t-esc="props.title"/>
-            </label>
-            <button class="destroy" t-on-click="removeTodo"></button>
-        </div>
-        <input class="edit" t-ref="input" t-if="state.isEditing" t-att-value="props.title" t-on-keyup="handleKeyup" t-on-blur="handleBlur"/>
-    </li>
-
-</templates>

examples/web/demo_data.js

@@ -1,212 +0,0 @@
-(function(window) {
-  "use strict";
-
-  var menus = [
-    {
-      id: 96,
-      name: "Discuss",
-      parent_id: false,
-      action: "ir.actions.client,131",
-      icon: "fa fa-comment",
-      children: []
-    },
-    {
-      id: 205,
-      name: "Notes",
-      parent_id: false,
-      action: "ir.actions.act_window,250",
-      icon: "fa fa-pen",
-      children: []
-    },
-    {
-      id: 409,
-      name: "CRM",
-      parent_id: false,
-      action: "ir.actions.act_window,597",
-      icon: "fa fa-handshake",
-      children: [
-        {
-          id: 418,
-          name: "Sales",
-          parent_id: 409,
-          action: false,
-          icon: false,
-          children: [
-            {
-              id: 423,
-              name: "My Pipeline",
-              parent_id: 418,
-              action: "ir.actions.act_window,597",
-              icon: false,
-              children: []
-            },
-            {
-              id: 812,
-              name: "My Quotations",
-              parent_id: 418,
-              action: "ir.actions.act_window,1051",
-              icon: false,
-              children: []
-            },
-            {
-              id: 419,
-              name: "Team Pipelines",
-              parent_id: 418,
-              action: "ir.actions.act_window,275",
-              icon: false,
-              children: []
-            }
-          ]
-        },
-        {
-          id: 421,
-          name: "Leads",
-          parent_id: 409,
-          action: false,
-          icon: false,
-          children: [
-            {
-              id: 422,
-              name: "Leads",
-              parent_id: 421,
-              action: "ir.actions.act_window,595",
-              icon: false,
-              children: []
-            },
-            {
-              id: 752,
-              name: "Scoring Rules",
-              parent_id: 421,
-              icon: false,
-              action: "ir.actions.act_window,1083",
-              children: []
-            }
-          ]
-        }
-      ]
-    }
-  ];
-  window.demoData = {
-    menus: menus
-  };
-
-  const actions = [
-    {
-      id: 131,
-      type: "ir.actions.client",
-      target: "current",
-      name: "Discuss",
-      tag: "mail.discuss"
-    },
-    {
-      id: 250,
-      type: "ir.actions.act_window",
-      name: "Notes",
-      target: "current",
-      domain: false,
-      context: "{}",
-      views: [[false, "kanban"], [false, "list"], [false, "form"]],
-      res_id: 0,
-      res_model: "note.note"
-    },
-    {
-      id: 597,
-      type: "ir.actions.act_window",
-      name: "Pipeline",
-      target: "current",
-      domain: false,
-      context: { default_team_id: 1 },
-      views: [[2103, "kanban"], [2106, "list"], [2105, "form"]],
-      res_id: 0,
-      res_model: "crm.lead"
-    },
-    {
-      id: 1051,
-      type: "ir.actions.act_window",
-      name: "Quotations",
-      target: "current",
-      domain: false,
-      context: "{'search_default_my_quotation': 1}",
-      views: [
-        [3387, "list"],
-        [3385, "kanban"],
-        [3389, "form"],
-        [3382, "calendar"],
-        [3384, "pivot"],
-        [3383, "graph"]
-      ],
-      res_id: 0,
-      res_model: "sale.order"
-    },
-    {
-      id: 275,
-      type: "ir.actions.act_window",
-      name: "Team Pipelines",
-      target: "current",
-      context: "{}",
-      domain: "[('use_opportunities', '=', True)]",
-      views: [[false, "kanban"], [false, "form"]],
-      res_id: 0,
-      res_model: "crm.team"
-    },
-    {
-      id: 595,
-      type: "ir.actions.act_window",
-      name: "Leads",
-      target: "current",
-      context:
-        "{ 'default_type':'lead', 'search_default_type': 'lead', 'search_default_to_process':1,  }",
-      domain: "['|', ('type','=','lead'), ('type','=',False)]",
-      views: [
-        [2098, "list"],
-        [2099, "kanban"],
-        [2100, "calendar"],
-        [2108, "pivot"],
-        [2107, "graph"],
-        [false, "form"]
-      ],
-      res_id: 0,
-      res_model: "crm.lead"
-    },
-    {
-      id: 1083,
-      type: "ir.actions.act_window",
-      name: "Scores",
-      target: "current",
-      context: "{}",
-      domain: false,
-      views: [[false, "list"], [false, "kanban"], [false, "form"]],
-      res_id: 0,
-      res_model: "website.crm.score"
-    }
-  ];
-
-  let rpcId = 1;
-  window.demoData.mockAjax = async function(route, params) {
-    let id = rpcId++;
-    console.log(`[RPC Request ${id}]`, route, params);
-
-    // wait some random delay
-    const delay = Math.random() * 1000;
-    return new Promise(resolve => setTimeout(resolve, delay)).then(() => {
-      const result = _mock(route, params);
-      console.log(`[RPC Response ${id}]`, result);
-      return result;
-    });
-  };
-
-  function _mock(route, params) {
-    // mock action
-    if (route === "web/action/load") {
-      const action = actions.find(a => a.id === params.action_id);
-      if (action) {
-        return action;
-      } else {
-        throw new Error("cannot find action");
-      }
-    }
-    // unknown route
-    console.warn("Unknown route", route);
-    return true;
-  }
-})(window);

examples/web/index.html

@@ -1,39 +0,0 @@
-<!DOCTYPE html>
-<html lang="en">
-  <head>
-    <meta charset="utf-8">
-    <title>Odoo</title>
-    <link rel="icon" href="data:,">
-
-    <!-- Bootstrap... This sucks. -->
-    <script src="/static/libs/jquery/jquery-3.3.1.slim.min.js"></script>
-    <script src="/static/libs/popper/popper.min.js"></script>
-    <link rel="stylesheet" href="/static/libs/bootstrap/bootstrap.min.css">
-    <script src="/static/libs/bootstrap/bootstrap.min.js"></script>
-
-    <!-- Font awesome -->
-    <link rel="stylesheet" href="/static/libs/fontawesome/css/all.min.css">
-
-    <!-- AMD module system -->
-    <script src="/static/libs/almond/almond.js"></script>
-
-    <!-- Application JS/CSS -->
-    <script src="/main.js"></script>
-    <link rel="stylesheet" href="/app.css">
-
-    <script src="/demo_data.js"></script>
-
-    <script>
-        window.odoo = {};
-
-        // we add demo data here
-        window.odoo.menus = demoData.menus;
-
-        // this will start the main.ts code, which creates the web client
-        require('main');
-    </script>
-
-  </head>
-  <body>
-  </body>
-</html>

examples/web/static/libs/almond/almond.js

@@ -1,434 +0,0 @@
-/**
- * @license almond 0.3.3 Copyright jQuery Foundation and other contributors.
- * Released under MIT license, http://github.com/requirejs/almond/LICENSE
- */
-//Going sloppy to avoid 'use strict' string cost, but strict practices should
-//be followed.
-/*global setTimeout: false */
-
-var requirejs, require, define;
-(function (undef) {
-    var main, req, makeMap, handlers,
-        defined = {},
-        waiting = {},
-        config = {},
-        defining = {},
-        hasOwn = Object.prototype.hasOwnProperty,
-        aps = [].slice,
-        jsSuffixRegExp = /\.js$/;
-
-    function hasProp(obj, prop) {
-        return hasOwn.call(obj, prop);
-    }
-
-    /**
-     * Given a relative module name, like ./something, normalize it to
-     * a real name that can be mapped to a path.
-     * @param {String} name the relative name
-     * @param {String} baseName a real name that the name arg is relative
-     * to.
-     * @returns {String} normalized name
-     */
-    function normalize(name, baseName) {
-        var nameParts, nameSegment, mapValue, foundMap, lastIndex,
-            foundI, foundStarMap, starI, i, j, part, normalizedBaseParts,
-            baseParts = baseName && baseName.split("/"),
-            map = config.map,
-            starMap = (map && map['*']) || {};
-
-        //Adjust any relative paths.
-        if (name) {
-            name = name.split('/');
-            lastIndex = name.length - 1;
-
-            // If wanting node ID compatibility, strip .js from end
-            // of IDs. Have to do this here, and not in nameToUrl
-            // because node allows either .js or non .js to map
-            // to same file.
-            if (config.nodeIdCompat && jsSuffixRegExp.test(name[lastIndex])) {
-                name[lastIndex] = name[lastIndex].replace(jsSuffixRegExp, '');
-            }
-
-            // Starts with a '.' so need the baseName
-            if (name[0].charAt(0) === '.' && baseParts) {
-                //Convert baseName to array, and lop off the last part,
-                //so that . matches that 'directory' and not name of the baseName's
-                //module. For instance, baseName of 'one/two/three', maps to
-                //'one/two/three.js', but we want the directory, 'one/two' for
-                //this normalization.
-                normalizedBaseParts = baseParts.slice(0, baseParts.length - 1);
-                name = normalizedBaseParts.concat(name);
-            }
-
-            //start trimDots
-            for (i = 0; i < name.length; i++) {
-                part = name[i];
-                if (part === '.') {
-                    name.splice(i, 1);
-                    i -= 1;
-                } else if (part === '..') {
-                    // If at the start, or previous value is still ..,
-                    // keep them so that when converted to a path it may
-                    // still work when converted to a path, even though
-                    // as an ID it is less than ideal. In larger point
-                    // releases, may be better to just kick out an error.
-                    if (i === 0 || (i === 1 && name[2] === '..') || name[i - 1] === '..') {
-                        continue;
-                    } else if (i > 0) {
-                        name.splice(i - 1, 2);
-                        i -= 2;
-                    }
-                }
-            }
-            //end trimDots
-
-            name = name.join('/');
-        }
-
-        //Apply map config if available.
-        if ((baseParts || starMap) && map) {
-            nameParts = name.split('/');
-
-            for (i = nameParts.length; i > 0; i -= 1) {
-                nameSegment = nameParts.slice(0, i).join("/");
-
-                if (baseParts) {
-                    //Find the longest baseName segment match in the config.
-                    //So, do joins on the biggest to smallest lengths of baseParts.
-                    for (j = baseParts.length; j > 0; j -= 1) {
-                        mapValue = map[baseParts.slice(0, j).join('/')];
-
-                        //baseName segment has  config, find if it has one for
-                        //this name.
-                        if (mapValue) {
-                            mapValue = mapValue[nameSegment];
-                            if (mapValue) {
-                                //Match, update name to the new value.
-                                foundMap = mapValue;
-                                foundI = i;
-                                break;
-                            }
-                        }
-                    }
-                }
-
-                if (foundMap) {
-                    break;
-                }
-
-                //Check for a star map match, but just hold on to it,
-                //if there is a shorter segment match later in a matching
-                //config, then favor over this star map.
-                if (!foundStarMap && starMap && starMap[nameSegment]) {
-                    foundStarMap = starMap[nameSegment];
-                    starI = i;
-                }
-            }
-
-            if (!foundMap && foundStarMap) {
-                foundMap = foundStarMap;
-                foundI = starI;
-            }
-
-            if (foundMap) {
-                nameParts.splice(0, foundI, foundMap);
-                name = nameParts.join('/');
-            }
-        }
-
-        return name;
-    }
-
-    function makeRequire(relName, forceSync) {
-        return function () {
-            //A version of a require function that passes a moduleName
-            //value for items that may need to
-            //look up paths relative to the moduleName
-            var args = aps.call(arguments, 0);
-
-            //If first arg is not require('string'), and there is only
-            //one arg, it is the array form without a callback. Insert
-            //a null so that the following concat is correct.
-            if (typeof args[0] !== 'string' && args.length === 1) {
-                args.push(null);
-            }
-            return req.apply(undef, args.concat([relName, forceSync]));
-        };
-    }
-
-    function makeNormalize(relName) {
-        return function (name) {
-            return normalize(name, relName);
-        };
-    }
-
-    function makeLoad(depName) {
-        return function (value) {
-            defined[depName] = value;
-        };
-    }
-
-    function callDep(name) {
-        if (hasProp(waiting, name)) {
-            var args = waiting[name];
-            delete waiting[name];
-            defining[name] = true;
-            main.apply(undef, args);
-        }
-
-        if (!hasProp(defined, name) && !hasProp(defining, name)) {
-            throw new Error('No ' + name);
-        }
-        return defined[name];
-    }
-
-    //Turns a plugin!resource to [plugin, resource]
-    //with the plugin being undefined if the name
-    //did not have a plugin prefix.
-    function splitPrefix(name) {
-        var prefix,
-            index = name ? name.indexOf('!') : -1;
-        if (index > -1) {
-            prefix = name.substring(0, index);
-            name = name.substring(index + 1, name.length);
-        }
-        return [prefix, name];
-    }
-
-    //Creates a parts array for a relName where first part is plugin ID,
-    //second part is resource ID. Assumes relName has already been normalized.
-    function makeRelParts(relName) {
-        return relName ? splitPrefix(relName) : [];
-    }
-
-    /**
-     * Makes a name map, normalizing the name, and using a plugin
-     * for normalization if necessary. Grabs a ref to plugin
-     * too, as an optimization.
-     */
-    makeMap = function (name, relParts) {
-        var plugin,
-            parts = splitPrefix(name),
-            prefix = parts[0],
-            relResourceName = relParts[1];
-
-        name = parts[1];
-
-        if (prefix) {
-            prefix = normalize(prefix, relResourceName);
-            plugin = callDep(prefix);
-        }
-
-        //Normalize according
-        if (prefix) {
-            if (plugin && plugin.normalize) {
-                name = plugin.normalize(name, makeNormalize(relResourceName));
-            } else {
-                name = normalize(name, relResourceName);
-            }
-        } else {
-            name = normalize(name, relResourceName);
-            parts = splitPrefix(name);
-            prefix = parts[0];
-            name = parts[1];
-            if (prefix) {
-                plugin = callDep(prefix);
-            }
-        }
-
-        //Using ridiculous property names for space reasons
-        return {
-            f: prefix ? prefix + '!' + name : name, //fullName
-            n: name,
-            pr: prefix,
-            p: plugin
-        };
-    };
-
-    function makeConfig(name) {
-        return function () {
-            return (config && config.config && config.config[name]) || {};
-        };
-    }
-
-    handlers = {
-        require: function (name) {
-            return makeRequire(name);
-        },
-        exports: function (name) {
-            var e = defined[name];
-            if (typeof e !== 'undefined') {
-                return e;
-            } else {
-                return (defined[name] = {});
-            }
-        },
-        module: function (name) {
-            return {
-                id: name,
-                uri: '',
-                exports: defined[name],
-                config: makeConfig(name)
-            };
-        }
-    };
-
-    main = function (name, deps, callback, relName) {
-        var cjsModule, depName, ret, map, i, relParts,
-            args = [],
-            callbackType = typeof callback,
-            usingExports;
-
-        //Use name if no relName
-        relName = relName || name;
-        relParts = makeRelParts(relName);
-
-        //Call the callback to define the module, if necessary.
-        if (callbackType === 'undefined' || callbackType === 'function') {
-            //Pull out the defined dependencies and pass the ordered
-            //values to the callback.
-            //Default to [require, exports, module] if no deps
-            deps = !deps.length && callback.length ? ['require', 'exports', 'module'] : deps;
-            for (i = 0; i < deps.length; i += 1) {
-                map = makeMap(deps[i], relParts);
-                depName = map.f;
-
-                //Fast path CommonJS standard dependencies.
-                if (depName === "require") {
-                    args[i] = handlers.require(name);
-                } else if (depName === "exports") {
-                    //CommonJS module spec 1.1
-                    args[i] = handlers.exports(name);
-                    usingExports = true;
-                } else if (depName === "module") {
-                    //CommonJS module spec 1.1
-                    cjsModule = args[i] = handlers.module(name);
-                } else if (hasProp(defined, depName) ||
-                           hasProp(waiting, depName) ||
-                           hasProp(defining, depName)) {
-                    args[i] = callDep(depName);
-                } else if (map.p) {
-                    map.p.load(map.n, makeRequire(relName, true), makeLoad(depName), {});
-                    args[i] = defined[depName];
-                } else {
-                    throw new Error(name + ' missing ' + depName);
-                }
-            }
-
-            ret = callback ? callback.apply(defined[name], args) : undefined;
-
-            if (name) {
-                //If setting exports via "module" is in play,
-                //favor that over return value and exports. After that,
-                //favor a non-undefined return value over exports use.
-                if (cjsModule && cjsModule.exports !== undef &&
-                        cjsModule.exports !== defined[name]) {
-                    defined[name] = cjsModule.exports;
-                } else if (ret !== undef || !usingExports) {
-                    //Use the return value from the function.
-                    defined[name] = ret;
-                }
-            }
-        } else if (name) {
-            //May just be an object definition for the module. Only
-            //worry about defining if have a module name.
-            defined[name] = callback;
-        }
-    };
-
-    requirejs = require = req = function (deps, callback, relName, forceSync, alt) {
-        if (typeof deps === "string") {
-            if (handlers[deps]) {
-                //callback in this case is really relName
-                return handlers[deps](callback);
-            }
-            //Just return the module wanted. In this scenario, the
-            //deps arg is the module name, and second arg (if passed)
-            //is just the relName.
-            //Normalize module name, if it contains . or ..
-            return callDep(makeMap(deps, makeRelParts(callback)).f);
-        } else if (!deps.splice) {
-            //deps is a config object, not an array.
-            config = deps;
-            if (config.deps) {
-                req(config.deps, config.callback);
-            }
-            if (!callback) {
-                return;
-            }
-
-            if (callback.splice) {
-                //callback is an array, which means it is a dependency list.
-                //Adjust args if there are dependencies
-                deps = callback;
-                callback = relName;
-                relName = null;
-            } else {
-                deps = undef;
-            }
-        }
-
-        //Support require(['a'])
-        callback = callback || function () {};
-
-        //If relName is a function, it is an errback handler,
-        //so remove it.
-        if (typeof relName === 'function') {
-            relName = forceSync;
-            forceSync = alt;
-        }
-
-        //Simulate async callback;
-        if (forceSync) {
-            main(undef, deps, callback, relName);
-        } else {
-            //Using a non-zero value because of concern for what old browsers
-            //do, and latest browsers "upgrade" to 4 if lower value is used:
-            //http://www.whatwg.org/specs/web-apps/current-work/multipage/timers.html#dom-windowtimers-settimeout:
-            //If want a value immediately, use require('id') instead -- something
-            //that works in almond on the global level, but not guaranteed and
-            //unlikely to work in other AMD implementations.
-            setTimeout(function () {
-                main(undef, deps, callback, relName);
-            }, 4);
-        }
-
-        return req;
-    };
-
-    /**
-     * Just drops the config on the floor, but returns req in case
-     * the config return value is used.
-     */
-    req.config = function (cfg) {
-        return req(cfg);
-    };
-
-    /**
-     * Expose module registry for debugging and tooling
-     */
-    requirejs._defined = defined;
-
-    define = function (name, deps, callback) {
-        if (typeof name !== 'string') {
-            throw new Error('See almond README: incorrect module build, no module name');
-        }
-
-        //This module may not have dependencies
-        if (!deps.splice) {
-            //deps is not an array, so probably means
-            //an object literal or factory function for
-            //the value. Adjust args.
-            callback = deps;
-            deps = [];
-        }
-
-        if (!hasProp(defined, name) && !hasProp(waiting, name)) {
-            waiting[name] = [name, deps, callback];
-        }
-    };
-
-    define.amd = {
-        jQuery: true
-    };
-}());

examples/web/static/libs/fontawesome/LICENSE.txt

@@ -1,34 +0,0 @@
-Font Awesome Free License
--------------------------
-
-Font Awesome Free is free, open source, and GPL friendly. You can use it for
-commercial projects, open source projects, or really almost whatever you want.
-Full Font Awesome Free license: https://fontawesome.com/license/free.
-
-# Icons: CC BY 4.0 License (https://creativecommons.org/licenses/by/4.0/)
-In the Font Awesome Free download, the CC BY 4.0 license applies to all icons
-packaged as SVG and JS file types.
-
-# Fonts: SIL OFL 1.1 License (https://scripts.sil.org/OFL)
-In the Font Awesome Free download, the SIL OFL license applies to all icons
-packaged as web and desktop font files.
-
-# Code: MIT License (https://opensource.org/licenses/MIT)
-In the Font Awesome Free download, the MIT license applies to all non-font and
-non-icon files.
-
-# Attribution
-Attribution is required by MIT, SIL OFL, and CC BY licenses. Downloaded Font
-Awesome Free files already contain embedded comments with sufficient
-attribution, so you shouldn't need to do anything additional when using these
-files normally.
-
-We've kept attribution comments terse, so we ask that you do not actively work
-to remove them from files, especially code. They're a great way for folks to
-learn about Font Awesome.
-
-# Brand Icons
-All brand icons are trademarks of their respective owners. The use of these
-trademarks does not indicate endorsement of the trademark holder by Font
-Awesome, nor vice versa. **Please do not use brand logos for any purpose except
-to represent the company, product, or service to which they refer.**

examples/web/static/libs/fontawesome/css/brands.css

@@ -1,10 +0,0 @@
-@font-face {
-  font-family: 'Font Awesome 5 Brands';
-  font-style: normal;
-  font-weight: normal;
-  font-display: auto;
-  src: url("../webfonts/fa-brands-400.eot");
-  src: url("../webfonts/fa-brands-400.eot?#iefix") format("embedded-opentype"), url("../webfonts/fa-brands-400.woff2") format("woff2"), url("../webfonts/fa-brands-400.woff") format("woff"), url("../webfonts/fa-brands-400.ttf") format("truetype"), url("../webfonts/fa-brands-400.svg#fontawesome") format("svg"); }
-
-.fab {
-  font-family: 'Font Awesome 5 Brands'; }

examples/web/static/libs/fontawesome/css/brands.min.css

@@ -1 +0,0 @@
-@font-face{font-family:"Font Awesome 5 Brands";font-style:normal;font-weight:normal;font-display:auto;src:url(../webfonts/fa-brands-400.eot);src:url(../webfonts/fa-brands-400.eot?#iefix) format("embedded-opentype"),url(../webfonts/fa-brands-400.woff2) format("woff2"),url(../webfonts/fa-brands-400.woff) format("woff"),url(../webfonts/fa-brands-400.ttf) format("truetype"),url(../webfonts/fa-brands-400.svg#fontawesome) format("svg")}.fab{font-family:"Font Awesome 5 Brands"}

examples/web/static/libs/fontawesome/css/regular.css

@@ -1,11 +0,0 @@
-@font-face {
-  font-family: 'Font Awesome 5 Free';
-  font-style: normal;
-  font-weight: 400;
-  font-display: auto;
-  src: url("../webfonts/fa-regular-400.eot");
-  src: url("../webfonts/fa-regular-400.eot?#iefix") format("embedded-opentype"), url("../webfonts/fa-regular-400.woff2") format("woff2"), url("../webfonts/fa-regular-400.woff") format("woff"), url("../webfonts/fa-regular-400.ttf") format("truetype"), url("../webfonts/fa-regular-400.svg#fontawesome") format("svg"); }
-
-.far {
-  font-family: 'Font Awesome 5 Free';
-  font-weight: 400; }

examples/web/static/libs/fontawesome/css/regular.min.css

@@ -1 +0,0 @@
-@font-face{font-family:"Font Awesome 5 Free";font-style:normal;font-weight:400;font-display:auto;src:url(../webfonts/fa-regular-400.eot);src:url(../webfonts/fa-regular-400.eot?#iefix) format("embedded-opentype"),url(../webfonts/fa-regular-400.woff2) format("woff2"),url(../webfonts/fa-regular-400.woff) format("woff"),url(../webfonts/fa-regular-400.ttf) format("truetype"),url(../webfonts/fa-regular-400.svg#fontawesome) format("svg")}.far{font-family:"Font Awesome 5 Free";font-weight:400}

examples/web/static/libs/fontawesome/css/solid.css

@@ -1,12 +0,0 @@
-@font-face {
-  font-family: 'Font Awesome 5 Free';
-  font-style: normal;
-  font-weight: 900;
-  font-display: auto;
-  src: url("../webfonts/fa-solid-900.eot");
-  src: url("../webfonts/fa-solid-900.eot?#iefix") format("embedded-opentype"), url("../webfonts/fa-solid-900.woff2") format("woff2"), url("../webfonts/fa-solid-900.woff") format("woff"), url("../webfonts/fa-solid-900.ttf") format("truetype"), url("../webfonts/fa-solid-900.svg#fontawesome") format("svg"); }
-
-.fa,
-.fas {
-  font-family: 'Font Awesome 5 Free';
-  font-weight: 900; }

examples/web/static/libs/fontawesome/css/solid.min.css

@@ -1 +0,0 @@
-@font-face{font-family:"Font Awesome 5 Free";font-style:normal;font-weight:900;font-display:auto;src:url(../webfonts/fa-solid-900.eot);src:url(../webfonts/fa-solid-900.eot?#iefix) format("embedded-opentype"),url(../webfonts/fa-solid-900.woff2) format("woff2"),url(../webfonts/fa-solid-900.woff) format("woff"),url(../webfonts/fa-solid-900.ttf) format("truetype"),url(../webfonts/fa-solid-900.svg#fontawesome) format("svg")}.fa,.fas{font-family:"Font Awesome 5 Free";font-weight:900}

examples/web/static/libs/fontawesome/css/svg-with-js.css

@@ -1,342 +0,0 @@
-svg:not(:root).svg-inline--fa {
-  overflow: visible; }
-
-.svg-inline--fa {
-  display: inline-block;
-  font-size: inherit;
-  height: 1em;
-  overflow: visible;
-  vertical-align: -.125em; }
-  .svg-inline--fa.fa-lg {
-    vertical-align: -.225em; }
-  .svg-inline--fa.fa-w-1 {
-    width: 0.0625em; }
-  .svg-inline--fa.fa-w-2 {
-    width: 0.125em; }
-  .svg-inline--fa.fa-w-3 {
-    width: 0.1875em; }
-  .svg-inline--fa.fa-w-4 {
-    width: 0.25em; }
-  .svg-inline--fa.fa-w-5 {
-    width: 0.3125em; }
-  .svg-inline--fa.fa-w-6 {
-    width: 0.375em; }
-  .svg-inline--fa.fa-w-7 {
-    width: 0.4375em; }
-  .svg-inline--fa.fa-w-8 {
-    width: 0.5em; }
-  .svg-inline--fa.fa-w-9 {
-    width: 0.5625em; }
-  .svg-inline--fa.fa-w-10 {
-    width: 0.625em; }
-  .svg-inline--fa.fa-w-11 {
-    width: 0.6875em; }
-  .svg-inline--fa.fa-w-12 {
-    width: 0.75em; }
-  .svg-inline--fa.fa-w-13 {
-    width: 0.8125em; }
-  .svg-inline--fa.fa-w-14 {
-    width: 0.875em; }
-  .svg-inline--fa.fa-w-15 {
-    width: 0.9375em; }
-  .svg-inline--fa.fa-w-16 {
-    width: 1em; }
-  .svg-inline--fa.fa-w-17 {
-    width: 1.0625em; }
-  .svg-inline--fa.fa-w-18 {
-    width: 1.125em; }
-  .svg-inline--fa.fa-w-19 {
-    width: 1.1875em; }
-  .svg-inline--fa.fa-w-20 {
-    width: 1.25em; }
-  .svg-inline--fa.fa-pull-left {
-    margin-right: .3em;
-    width: auto; }
-  .svg-inline--fa.fa-pull-right {
-    margin-left: .3em;
-    width: auto; }
-  .svg-inline--fa.fa-border {
-    height: 1.5em; }
-  .svg-inline--fa.fa-li {
-    width: 2em; }
-  .svg-inline--fa.fa-fw {
-    width: 1.25em; }
-
-.fa-layers svg.svg-inline--fa {
-  bottom: 0;
-  left: 0;
-  margin: auto;
-  position: absolute;
-  right: 0;
-  top: 0; }
-
-.fa-layers {
-  display: inline-block;
-  height: 1em;
-  position: relative;
-  text-align: center;
-  vertical-align: -.125em;
-  width: 1em; }
-  .fa-layers svg.svg-inline--fa {
-    -webkit-transform-origin: center center;
-            transform-origin: center center; }
-
-.fa-layers-text, .fa-layers-counter {
-  display: inline-block;
-  position: absolute;
-  text-align: center; }
-
-.fa-layers-text {
-  left: 50%;
-  top: 50%;
-  -webkit-transform: translate(-50%, -50%);
-          transform: translate(-50%, -50%);
-  -webkit-transform-origin: center center;
-          transform-origin: center center; }
-
-.fa-layers-counter {
-  background-color: #ff253a;
-  border-radius: 1em;
-  -webkit-box-sizing: border-box;
-          box-sizing: border-box;
-  color: #fff;
-  height: 1.5em;
-  line-height: 1;
-  max-width: 5em;
-  min-width: 1.5em;
-  overflow: hidden;
-  padding: .25em;
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-  top: 0;
-  -webkit-transform: scale(0.25);
-          transform: scale(0.25);
-  -webkit-transform-origin: top right;
-          transform-origin: top right; }
-
-.fa-layers-bottom-right {
-  bottom: 0;
-  right: 0;
-  top: auto;
-  -webkit-transform: scale(0.25);
-          transform: scale(0.25);
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-          transform-origin: bottom right; }
-
-.fa-layers-bottom-left {
-  bottom: 0;
-  left: 0;
-  right: auto;
-  top: auto;
-  -webkit-transform: scale(0.25);
-          transform: scale(0.25);
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-          transform-origin: bottom left; }
-
-.fa-layers-top-right {
-  right: 0;
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-  -webkit-transform: scale(0.25);
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-          transform-origin: top right; }
-
-.fa-layers-top-left {
-  left: 0;
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-  top: 0;
-  -webkit-transform: scale(0.25);
-          transform: scale(0.25);
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-          transform-origin: top left; }
-
-.fa-lg {
-  font-size: 1.33333em;
-  line-height: 0.75em;
-  vertical-align: -.0667em; }
-
-.fa-xs {
-  font-size: .75em; }
-
-.fa-sm {
-  font-size: .875em; }
-
-.fa-1x {
-  font-size: 1em; }
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-.fa-2x {
-  font-size: 2em; }
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-.fa-4x {
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-.fa-5x {
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-.fa-9x {
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-.fa-10x {
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-.fa-fw {
-  text-align: center;
-  width: 1.25em; }
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-.fa-ul {
-  list-style-type: none;
-  margin-left: 2.5em;
-  padding-left: 0; }
-  .fa-ul > li {
-    position: relative; }
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-.fa-li {
-  left: -2em;
-  position: absolute;
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-.fa-border {
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-  border-radius: .1em;
-  padding: .2em .25em .15em; }
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-.fa-pull-left {
-  float: left; }
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-.fa-pull-right {
-  float: right; }
-
-.fa.fa-pull-left,
-.fas.fa-pull-left,
-.far.fa-pull-left,
-.fal.fa-pull-left,
-.fab.fa-pull-left {
-  margin-right: .3em; }
-
-.fa.fa-pull-right,
-.fas.fa-pull-right,
-.far.fa-pull-right,
-.fal.fa-pull-right,
-.fab.fa-pull-right {
-  margin-left: .3em; }
-
-.fa-spin {
-  -webkit-animation: fa-spin 2s infinite linear;
-          animation: fa-spin 2s infinite linear; }
-
-.fa-pulse {
-  -webkit-animation: fa-spin 1s infinite steps(8);
-          animation: fa-spin 1s infinite steps(8); }
-
-@-webkit-keyframes fa-spin {
-  0% {
-    -webkit-transform: rotate(0deg);
-            transform: rotate(0deg); }
-  100% {
-    -webkit-transform: rotate(360deg);
-            transform: rotate(360deg); } }
-
-@keyframes fa-spin {
-  0% {
-    -webkit-transform: rotate(0deg);
-            transform: rotate(0deg); }
-  100% {
-    -webkit-transform: rotate(360deg);
-            transform: rotate(360deg); } }
-
-.fa-rotate-90 {
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-  -webkit-transform: rotate(90deg);
-          transform: rotate(90deg); }
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-.fa-rotate-180 {
-  -ms-filter: "progid:DXImageTransform.Microsoft.BasicImage(rotation=2)";
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-.fa-rotate-270 {
-  -ms-filter: "progid:DXImageTransform.Microsoft.BasicImage(rotation=3)";
-  -webkit-transform: rotate(270deg);
-          transform: rotate(270deg); }
-
-.fa-flip-horizontal {
-  -ms-filter: "progid:DXImageTransform.Microsoft.BasicImage(rotation=0, mirror=1)";
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-          transform: scale(-1, 1); }
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-.fa-flip-vertical {
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-          transform: scale(1, -1); }
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-.fa-flip-both, .fa-flip-horizontal.fa-flip-vertical {
-  -ms-filter: "progid:DXImageTransform.Microsoft.BasicImage(rotation=2, mirror=1)";
-  -webkit-transform: scale(-1, -1);
-          transform: scale(-1, -1); }
-
-:root .fa-rotate-90,
-:root .fa-rotate-180,
-:root .fa-rotate-270,
-:root .fa-flip-horizontal,
-:root .fa-flip-vertical,
-:root .fa-flip-both {
-  -webkit-filter: none;
-          filter: none; }
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-.fa-stack {
-  display: inline-block;
-  height: 2em;
-  position: relative;
-  width: 2.5em; }
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-.fa-stack-1x,
-.fa-stack-2x {
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-  left: 0;
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-  position: absolute;
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-  top: 0; }
-
-.svg-inline--fa.fa-stack-1x {
-  height: 1em;
-  width: 1.25em; }
-
-.svg-inline--fa.fa-stack-2x {
-  height: 2em;
-  width: 2.5em; }
-
-.fa-inverse {
-  color: #fff; }
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-.sr-only {
-  border: 0;
-  clip: rect(0, 0, 0, 0);
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-  position: absolute;
-  width: 1px; }
-
-.sr-only-focusable:active, .sr-only-focusable:focus {
-  clip: auto;
-  height: auto;
-  margin: 0;
-  overflow: visible;
-  position: static;
-  width: auto; }

examples/web/static/libs/fontawesome/css/svg-with-js.min.css

@@ -1 +0,0 @@
-.svg-inline--fa,svg:not(:root).svg-inline--fa{overflow:visible}.svg-inline--fa{display:inline-block;font-size:inherit;height:1em;vertical-align:-.125em}.svg-inline--fa.fa-lg{vertical-align:-.225em}.svg-inline--fa.fa-w-1{width:.0625em}.svg-inline--fa.fa-w-2{width:.125em}.svg-inline--fa.fa-w-3{width:.1875em}.svg-inline--fa.fa-w-4{width:.25em}.svg-inline--fa.fa-w-5{width:.3125em}.svg-inline--fa.fa-w-6{width:.375em}.svg-inline--fa.fa-w-7{width:.4375em}.svg-inline--fa.fa-w-8{width:.5em}.svg-inline--fa.fa-w-9{width:.5625em}.svg-inline--fa.fa-w-10{width:.625em}.svg-inline--fa.fa-w-11{width:.6875em}.svg-inline--fa.fa-w-12{width:.75em}.svg-inline--fa.fa-w-13{width:.8125em}.svg-inline--fa.fa-w-14{width:.875em}.svg-inline--fa.fa-w-15{width:.9375em}.svg-inline--fa.fa-w-16{width:1em}.svg-inline--fa.fa-w-17{width:1.0625em}.svg-inline--fa.fa-w-18{width:1.125em}.svg-inline--fa.fa-w-19{width:1.1875em}.svg-inline--fa.fa-w-20{width:1.25em}.svg-inline--fa.fa-pull-left{margin-right:.3em;width:auto}.svg-inline--fa.fa-pull-right{margin-left:.3em;width:auto}.svg-inline--fa.fa-border{height:1.5em}.svg-inline--fa.fa-li{width:2em}.svg-inline--fa.fa-fw{width:1.25em}.fa-layers svg.svg-inline--fa{bottom:0;left:0;margin:auto;position:absolute;right:0;top:0}.fa-layers{display:inline-block;height:1em;position:relative;text-align:center;vertical-align:-.125em;width:1em}.fa-layers svg.svg-inline--fa{transform-origin:center center}.fa-layers-counter,.fa-layers-text{display:inline-block;position:absolute;text-align:center}.fa-layers-text{left:50%;top:50%;transform:translate(-50%,-50%);transform-origin:center center}.fa-layers-counter{background-color:#ff253a;border-radius:1em;box-sizing:border-box;color:#fff;height:1.5em;line-height:1;max-width:5em;min-width:1.5em;overflow:hidden;padding:.25em;right:0;text-overflow:ellipsis;top:0;transform:scale(.25);transform-origin:top right}.fa-layers-bottom-right{bottom:0;right:0;top:auto;transform:scale(.25);transform-origin:bottom right}.fa-layers-bottom-left{bottom:0;left:0;right:auto;top:auto;transform:scale(.25);transform-origin:bottom left}.fa-layers-top-right{right:0;top:0;transform:scale(.25);transform-origin:top right}.fa-layers-top-left{left:0;right:auto;top:0;transform:scale(.25);transform-origin:top left}.fa-lg{font-size:1.33333em;line-height:.75em;vertical-align:-.0667em}.fa-xs{font-size:.75em}.fa-sm{font-size:.875em}.fa-1x{font-size:1em}.fa-2x{font-size:2em}.fa-3x{font-size:3em}.fa-4x{font-size:4em}.fa-5x{font-size:5em}.fa-6x{font-size:6em}.fa-7x{font-size:7em}.fa-8x{font-size:8em}.fa-9x{font-size:9em}.fa-10x{font-size:10em}.fa-fw{text-align:center;width:1.25em}.fa-ul{list-style-type:none;margin-left:2.5em;padding-left:0}.fa-ul>li{position:relative}.fa-li{left:-2em;position:absolute;text-align:center;width:2em;line-height:inherit}.fa-border{border:.08em solid #eee;border-radius:.1em;padding:.2em .25em .15em}.fa-pull-left{float:left}.fa-pull-right{float:right}.fa.fa-pull-left,.fab.fa-pull-left,.fal.fa-pull-left,.far.fa-pull-left,.fas.fa-pull-left{margin-right:.3em}.fa.fa-pull-right,.fab.fa-pull-right,.fal.fa-pull-right,.far.fa-pull-right,.fas.fa-pull-right{margin-left:.3em}.fa-spin{animation:fa-spin 2s infinite linear}.fa-pulse{animation:fa-spin 1s infinite steps(8)}@keyframes fa-spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}.fa-rotate-90{-ms-filter:"progid:DXImageTransform.Microsoft.BasicImage(rotation=1)";transform:rotate(90deg)}.fa-rotate-180{-ms-filter:"progid:DXImageTransform.Microsoft.BasicImage(rotation=2)";transform:rotate(180deg)}.fa-rotate-270{-ms-filter:"progid:DXImageTransform.Microsoft.BasicImage(rotation=3)";transform:rotate(270deg)}.fa-flip-horizontal{-ms-filter:"progid:DXImageTransform.Microsoft.BasicImage(rotation=0, mirror=1)";transform:scaleX(-1)}.fa-flip-vertical{transform:scaleY(-1)}.fa-flip-both,.fa-flip-horizontal.fa-flip-vertical,.fa-flip-vertical{-ms-filter:"progid:DXImageTransform.Microsoft.BasicImage(rotation=2, mirror=1)"}.fa-flip-both,.fa-flip-horizontal.fa-flip-vertical{transform:scale(-1)}:root .fa-flip-both,:root .fa-flip-horizontal,:root .fa-flip-vertical,:root .fa-rotate-90,:root .fa-rotate-180,:root .fa-rotate-270{filter:none}.fa-stack{display:inline-block;height:2em;position:relative;width:2.5em}.fa-stack-1x,.fa-stack-2x{bottom:0;left:0;margin:auto;position:absolute;right:0;top:0}.svg-inline--fa.fa-stack-1x{height:1em;width:1.25em}.svg-inline--fa.fa-stack-2x{height:2em;width:2.5em}.fa-inverse{color:#fff}.sr-only{border:0;clip:rect(0,0,0,0);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}.sr-only-focusable:active,.sr-only-focusable:focus{clip:auto;height:auto;margin:0;overflow:visible;position:static;width:auto}

examples/web/static/libs/fontawesome/js/regular.js

@@ -1,276 +0,0 @@
-(function () {
-  'use strict';
-
-  var _WINDOW = {};
-  var _DOCUMENT = {};
-
-  try {
-    if (typeof window !== 'undefined') _WINDOW = window;
-    if (typeof document !== 'undefined') _DOCUMENT = document;
-  } catch (e) {}
-
-  var _ref = _WINDOW.navigator || {},
-      _ref$userAgent = _ref.userAgent,
-      userAgent = _ref$userAgent === void 0 ? '' : _ref$userAgent;
-
-  var WINDOW = _WINDOW;
-  var DOCUMENT = _DOCUMENT;
-  var IS_BROWSER = !!WINDOW.document;
-  var IS_DOM = !!DOCUMENT.documentElement && !!DOCUMENT.head && typeof DOCUMENT.addEventListener === 'function' && typeof DOCUMENT.createElement === 'function';
-  var IS_IE = ~userAgent.indexOf('MSIE') || ~userAgent.indexOf('Trident/');
-
-  var NAMESPACE_IDENTIFIER = '___FONT_AWESOME___';
-  var PRODUCTION = function () {
-    try {
-      return "production" === 'production';
-    } catch (e) {
-      return false;
-    }
-  }();
-
-  function bunker(fn) {
-    try {
-      fn();
-    } catch (e) {
-      if (!PRODUCTION) {
-        throw e;
-      }
-    }
-  }
-
-  function _defineProperty(obj, key, value) {
-    if (key in obj) {
-      Object.defineProperty(obj, key, {
-        value: value,
-        enumerable: true,
-        configurable: true,
-        writable: true
-      });
-    } else {
-      obj[key] = value;
-    }
-
-    return obj;
-  }
-
-  function _objectSpread(target) {
-    for (var i = 1; i < arguments.length; i++) {
-      var source = arguments[i] != null ? arguments[i] : {};
-      var ownKeys = Object.keys(source);
-
-      if (typeof Object.getOwnPropertySymbols === 'function') {
-        ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) {
-          return Object.getOwnPropertyDescriptor(source, sym).enumerable;
-        }));
-      }
-
-      ownKeys.forEach(function (key) {
-        _defineProperty(target, key, source[key]);
-      });
-    }
-
-    return target;
-  }
-
-  var w = WINDOW || {};
-  if (!w[NAMESPACE_IDENTIFIER]) w[NAMESPACE_IDENTIFIER] = {};
-  if (!w[NAMESPACE_IDENTIFIER].styles) w[NAMESPACE_IDENTIFIER].styles = {};
-  if (!w[NAMESPACE_IDENTIFIER].hooks) w[NAMESPACE_IDENTIFIER].hooks = {};
-  if (!w[NAMESPACE_IDENTIFIER].shims) w[NAMESPACE_IDENTIFIER].shims = [];
-  var namespace = w[NAMESPACE_IDENTIFIER];
-
-  function defineIcons(prefix, icons) {
-    var params = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};
-    var _params$skipHooks = params.skipHooks,
-        skipHooks = _params$skipHooks === void 0 ? false : _params$skipHooks;
-    var normalized = Object.keys(icons).reduce(function (acc, iconName) {
-      var icon = icons[iconName];
-      var expanded = !!icon.icon;
-
-      if (expanded) {
-        acc[icon.iconName] = icon.icon;
-      } else {
-        acc[iconName] = icon;
-      }
-
-      return acc;
-    }, {});
-
-    if (typeof namespace.hooks.addPack === 'function' && !skipHooks) {
-      namespace.hooks.addPack(prefix, normalized);
-    } else {
-      namespace.styles[prefix] = _objectSpread({}, namespace.styles[prefix] || {}, normalized);
-    }
-    /**
-     * Font Awesome 4 used the prefix of `fa` for all icons. With the introduction
-     * of new styles we needed to differentiate between them. Prefix `fa` is now an alias
-     * for `fas` so we'll easy the upgrade process for our users by automatically defining
-     * this as well.
-     */
-
-
-    if (prefix === 'fas') {
-      defineIcons('fa', icons);
-    }
-  }
-
-  var icons = {
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-    "bell": [448, 512, [], "f0f3", "M439.39 362.29c-19.32-20.76-55.47-51.99-55.47-154.29 0-77.7-54.48-139.9-127.94-155.16V32c0-17.67-14.32-32-31.98-32s-31.98 14.33-31.98 32v20.84C118.56 68.1 64.08 130.3 64.08 208c0 102.3-36.15 133.53-55.47 154.29-6 6.45-8.66 14.16-8.61 21.71.11 16.4 12.98 32 32.1 32h383.8c19.12 0 32-15.6 32.1-32 .05-7.55-2.61-15.27-8.61-21.71zM67.53 368c21.22-27.97 44.42-74.33 44.53-159.42 0-.2-.06-.38-.06-.58 0-61.86 50.14-112 112-112s112 50.14 112 112c0 .2-.06.38-.06.58.11 85.1 23.31 131.46 44.53 159.42H67.53zM224 512c35.32 0 63.97-28.65 63.97-64H160.03c0 35.35 28.65 64 63.97 64z"],
-    "bell-slash": [640, 512, [], "f1f6", "M633.99 471.02L36 3.51C29.1-2.01 19.03-.9 13.51 6l-10 12.49C-2.02 25.39-.9 35.46 6 40.98l598 467.51c6.9 5.52 16.96 4.4 22.49-2.49l10-12.49c5.52-6.9 4.41-16.97-2.5-22.49zM163.53 368c16.71-22.03 34.48-55.8 41.4-110.58l-45.47-35.55c-3.27 90.73-36.47 120.68-54.84 140.42-6 6.45-8.66 14.16-8.61 21.71.11 16.4 12.98 32 32.1 32h279.66l-61.4-48H163.53zM320 96c61.86 0 112 50.14 112 112 0 .2-.06.38-.06.58.02 16.84 1.16 31.77 2.79 45.73l59.53 46.54c-8.31-22.13-14.34-51.49-14.34-92.85 0-77.7-54.48-139.9-127.94-155.16V32c0-17.67-14.32-32-31.98-32s-31.98 14.33-31.98 32v20.84c-26.02 5.41-49.45 16.94-69.13 32.72l38.17 29.84C275 103.18 296.65 96 320 96zm0 416c35.32 0 63.97-28.65 63.97-64H256.03c0 35.35 28.65 64 63.97 64z"],
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-    "user": [448, 512, [], "f007", "M313.6 304c-28.7 0-42.5 16-89.6 16-47.1 0-60.8-16-89.6-16C60.2 304 0 364.2 0 438.4V464c0 26.5 21.5 48 48 48h352c26.5 0 48-21.5 48-48v-25.6c0-74.2-60.2-134.4-134.4-134.4zM400 464H48v-25.6c0-47.6 38.8-86.4 86.4-86.4 14.6 0 38.3 16 89.6 16 51.7 0 74.9-16 89.6-16 47.6 0 86.4 38.8 86.4 86.4V464zM224 288c79.5 0 144-64.5 144-144S303.5 0 224 0 80 64.5 80 144s64.5 144 144 144zm0-240c52.9 0 96 43.1 96 96s-43.1 96-96 96-96-43.1-96-96 43.1-96 96-96z"],
-    "user-circle": [496, 512, [], "f2bd", "M248 104c-53 0-96 43-96 96s43 96 96 96 96-43 96-96-43-96-96-96zm0 144c-26.5 0-48-21.5-48-48s21.5-48 48-48 48 21.5 48 48-21.5 48-48 48zm0-240C111 8 0 119 0 256s111 248 248 248 248-111 248-248S385 8 248 8zm0 448c-49.7 0-95.1-18.3-130.1-48.4 14.9-23 40.4-38.6 69.6-39.5 20.8 6.4 40.6 9.6 60.5 9.6s39.7-3.1 60.5-9.6c29.2 1 54.7 16.5 69.6 39.5-35 30.1-80.4 48.4-130.1 48.4zm162.7-84.1c-24.4-31.4-62.1-51.9-105.1-51.9-10.2 0-26 9.6-57.6 9.6-31.5 0-47.4-9.6-57.6-9.6-42.9 0-80.6 20.5-105.1 51.9C61.9 339.2 48 299.2 48 256c0-110.3 89.7-200 200-200s200 89.7 200 200c0 43.2-13.9 83.2-37.3 115.9z"],
-    "window-close": [512, 512, [], "f410", "M464 32H48C21.5 32 0 53.5 0 80v352c0 26.5 21.5 48 48 48h416c26.5 0 48-21.5 48-48V80c0-26.5-21.5-48-48-48zm0 394c0 3.3-2.7 6-6 6H54c-3.3 0-6-2.7-6-6V86c0-3.3 2.7-6 6-6h404c3.3 0 6 2.7 6 6v340zM356.5 194.6L295.1 256l61.4 61.4c4.6 4.6 4.6 12.1 0 16.8l-22.3 22.3c-4.6 4.6-12.1 4.6-16.8 0L256 295.1l-61.4 61.4c-4.6 4.6-12.1 4.6-16.8 0l-22.3-22.3c-4.6-4.6-4.6-12.1 0-16.8l61.4-61.4-61.4-61.4c-4.6-4.6-4.6-12.1 0-16.8l22.3-22.3c4.6-4.6 12.1-4.6 16.8 0l61.4 61.4 61.4-61.4c4.6-4.6 12.1-4.6 16.8 0l22.3 22.3c4.7 4.6 4.7 12.1 0 16.8z"],
-    "window-maximize": [512, 512, [], "f2d0", "M464 32H48C21.5 32 0 53.5 0 80v352c0 26.5 21.5 48 48 48h416c26.5 0 48-21.5 48-48V80c0-26.5-21.5-48-48-48zm0 394c0 3.3-2.7 6-6 6H54c-3.3 0-6-2.7-6-6V192h416v234z"],
-    "window-minimize": [512, 512, [], "f2d1", "M480 480H32c-17.7 0-32-14.3-32-32s14.3-32 32-32h448c17.7 0 32 14.3 32 32s-14.3 32-32 32z"],
-    "window-restore": [512, 512, [], "f2d2", "M464 0H144c-26.5 0-48 21.5-48 48v48H48c-26.5 0-48 21.5-48 48v320c0 26.5 21.5 48 48 48h320c26.5 0 48-21.5 48-48v-48h48c26.5 0 48-21.5 48-48V48c0-26.5-21.5-48-48-48zm-96 464H48V256h320v208zm96-96h-48V144c0-26.5-21.5-48-48-48H144V48h320v320z"]
-  };
-
-  bunker(function () {
-    defineIcons('far', icons);
-  });
-
-}());

examples/web/static/libs/fontawesome/less/_animated.less

@@ -1,19 +0,0 @@
-// Animated Icons
-// --------------------------
-
-.@{fa-css-prefix}-spin {
-  animation: fa-spin 2s infinite linear;
-}
-
-.@{fa-css-prefix}-pulse {
-  animation: fa-spin 1s infinite steps(8);
-}
-
-@keyframes fa-spin {
-  0% {
-    transform: rotate(0deg);
-  }
-  100% {
-    transform: rotate(360deg);
-  }
-}

examples/web/static/libs/fontawesome/less/_bordered-pulled.less

@@ -1,16 +0,0 @@
-// Bordered & Pulled
-// -------------------------
-
-.@{fa-css-prefix}-border {
-  border-radius: .1em;
-  border: solid .08em @fa-border-color;
-  padding: .2em .25em .15em;
-}
-
-.@{fa-css-prefix}-pull-left { float: left; }
-.@{fa-css-prefix}-pull-right { float: right; }
-
-.@{fa-css-prefix}, .fas, .far, .fal, .fab {
-  &.@{fa-css-prefix}-pull-left { margin-right: .3em; }
-  &.@{fa-css-prefix}-pull-right { margin-left: .3em; }
-}

examples/web/static/libs/fontawesome/less/_core.less

@@ -1,12 +0,0 @@
-// Base Class Definition
-// -------------------------
-
-.@{fa-css-prefix}, .fas, .far, .fal, .fab {
-  -moz-osx-font-smoothing: grayscale;
-  -webkit-font-smoothing: antialiased;
-  display: inline-block;
-  font-style: normal;
-  font-variant: normal;
-  text-rendering: auto;
-  line-height: 1;
-}

examples/web/static/libs/fontawesome/less/_fixed-width.less

@@ -1,6 +0,0 @@
-// Fixed Width Icons
-// -------------------------
-.@{fa-css-prefix}-fw {
-  text-align: center;
-  width: (20em / 16);
-}

examples/web/static/libs/fontawesome/less/_larger.less

@@ -1,27 +0,0 @@
-// Icon Sizes
-// -------------------------
-
-.larger(@factor) when (@factor > 0) {
-  .larger((@factor - 1));
-
-  .@{fa-css-prefix}-@{factor}x {
-    font-size: (@factor * 1em);
-  }
-}
-
-/* makes the font 33% larger relative to the icon container */
-.@{fa-css-prefix}-lg {
-  font-size: (4em / 3);
-  line-height: (3em / 4);
-  vertical-align: -.0667em;
-}
-
-.@{fa-css-prefix}-xs {
-  font-size: .75em;
-}
-
-.@{fa-css-prefix}-sm {
-  font-size: .875em;
-}
-
-.larger(10);

examples/web/static/libs/fontawesome/less/_list.less

@@ -1,18 +0,0 @@
-// List Icons
-// -------------------------
-
-.@{fa-css-prefix}-ul {
-  list-style-type: none;
-  margin-left: @fa-li-width * 5/4;
-  padding-left: 0;
-
-  > li { position: relative; }
-}
-
-.@{fa-css-prefix}-li {
-  left: -@fa-li-width;
-  position: absolute;
-  text-align: center;
-  width: @fa-li-width;
-  line-height: inherit;
-}

examples/web/static/libs/fontawesome/less/_mixins.less

@@ -1,57 +0,0 @@
-// Mixins
-// --------------------------
-
-.fa-icon() {
-  -moz-osx-font-smoothing: grayscale;
-  -webkit-font-smoothing: antialiased;
-  display: inline-block;
-  font-style: normal;
-  font-variant: normal;
-  font-weight: normal;
-  line-height: 1;
-  vertical-align: -.125em;
-}
-
-.fa-icon-rotate(@degrees, @rotation) {
-  -ms-filter: "progid:DXImageTransform.Microsoft.BasicImage(rotation=@{rotation})";
-  transform: rotate(@degrees);
-}
-
-.fa-icon-flip(@horiz, @vert, @rotation) {
-  -ms-filter: "progid:DXImageTransform.Microsoft.BasicImage(rotation=@{rotation}, mirror=1)";
-  transform: scale(@horiz, @vert);
-}
-
-
-// Only display content to screen readers. A la Bootstrap 4.
-//
-// See: http://a11yproject.com/posts/how-to-hide-content/
-
-.sr-only() {
-  border: 0;
-  clip: rect(0,0,0,0);
-  height: 1px;
-  margin: -1px;
-  overflow: hidden;
-  padding: 0;
-  position: absolute;
-  width: 1px;
-}
-
-// Use in conjunction with .sr-only to only display content when it's focused.
-//
-// Useful for "Skip to main content" links; see http://www.w3.org/TR/2013/NOTE-WCAG20-TECHS-20130905/G1
-//
-// Credit: HTML5 Boilerplate
-
-.sr-only-focusable() {
-  &:active,
-  &:focus {
-    clip: auto;
-    height: auto;
-    margin: 0;
-    overflow: visible;
-    position: static;
-    width: auto;
-  }
-}

examples/web/static/libs/fontawesome/less/_rotated-flipped.less

@@ -1,24 +0,0 @@
-// Rotated & Flipped Icons
-// -------------------------
-
-.@{fa-css-prefix}-rotate-90  { .fa-icon-rotate(90deg, 1);  }
-.@{fa-css-prefix}-rotate-180 { .fa-icon-rotate(180deg, 2); }
-.@{fa-css-prefix}-rotate-270 { .fa-icon-rotate(270deg, 3); }
-
-.@{fa-css-prefix}-flip-horizontal { .fa-icon-flip(-1, 1, 0); }
-.@{fa-css-prefix}-flip-vertical   { .fa-icon-flip(1, -1, 2); }
-.@{fa-css-prefix}-flip-both, .@{fa-css-prefix}-flip-horizontal.@{fa-css-prefix}-flip-vertical { .fa-icon-flip(-1, -1, 2); }
-
-// Hook for IE8-9
-// -------------------------
-
-:root {
-  .@{fa-css-prefix}-rotate-90,
-  .@{fa-css-prefix}-rotate-180,
-  .@{fa-css-prefix}-rotate-270,
-  .@{fa-css-prefix}-flip-horizontal,
-  .@{fa-css-prefix}-flip-vertical,
-  .@{fa-css-prefix}-flip-both {
-    filter: none;
-  }
-}

examples/web/static/libs/fontawesome/less/_screen-reader.less

@@ -1,5 +0,0 @@
-// Screen Readers
-// -------------------------
-
-.sr-only { .sr-only(); }
-.sr-only-focusable { .sr-only-focusable(); }

examples/web/static/libs/fontawesome/less/_stacked.less

@@ -1,22 +0,0 @@
-// Stacked Icons
-// -------------------------
-
-.@{fa-css-prefix}-stack {
-  display: inline-block;
-  height: 2em;
-  line-height: 2em;
-  position: relative;
-  vertical-align: middle;
-  width: 2em;
-}
-
-.@{fa-css-prefix}-stack-1x, .@{fa-css-prefix}-stack-2x {
-  left: 0;
-  position: absolute;
-  text-align: center;
-  width: 100%;
-}
-
-.@{fa-css-prefix}-stack-1x { line-height: inherit; }
-.@{fa-css-prefix}-stack-2x { font-size: 2em; }
-.@{fa-css-prefix}-inverse { color: @fa-inverse; }

examples/web/static/libs/fontawesome/less/brands.less

@@ -1,18 +0,0 @@
-@import "_variables.less";
-
-@font-face {
-  font-family: 'Font Awesome 5 Brands';
-  font-style: normal;
-  font-weight: normal;
-  font-display: @fa-font-display;
-  src: url('@{fa-font-path}/fa-brands-400.eot');
-  src: url('@{fa-font-path}/fa-brands-400.eot?#iefix') format('embedded-opentype'),
-    url('@{fa-font-path}/fa-brands-400.woff2') format('woff2'),
-    url('@{fa-font-path}/fa-brands-400.woff') format('woff'),
-    url('@{fa-font-path}/fa-brands-400.ttf') format('truetype'),
-    url('@{fa-font-path}/fa-brands-400.svg#fontawesome') format('svg');
-}
-
-.fab {
-  font-family: 'Font Awesome 5 Brands';
-}

examples/web/static/libs/fontawesome/less/fontawesome.less

@@ -1,12 +0,0 @@
-@import "_variables.less";
-@import "_mixins.less";
-@import "_core.less";
-@import "_larger.less";
-@import "_fixed-width.less";
-@import "_list.less";
-@import "_bordered-pulled.less";
-@import "_animated.less";
-@import "_rotated-flipped.less";
-@import "_stacked.less";
-@import "_icons.less";
-@import "_screen-reader.less";

examples/web/static/libs/fontawesome/less/regular.less

@@ -1,19 +0,0 @@
-@import "_variables.less";
-
-@font-face {
-  font-family: 'Font Awesome 5 Free';
-  font-style: normal;
-  font-weight: 400;
-  font-display: @fa-font-display;
-  src: url('@{fa-font-path}/fa-regular-400.eot');
-  src: url('@{fa-font-path}/fa-regular-400.eot?#iefix') format('embedded-opentype'),
-    url('@{fa-font-path}/fa-regular-400.woff2') format('woff2'),
-    url('@{fa-font-path}/fa-regular-400.woff') format('woff'),
-    url('@{fa-font-path}/fa-regular-400.ttf') format('truetype'),
-    url('@{fa-font-path}/fa-regular-400.svg#fontawesome') format('svg');
-}
-
-.far {
-  font-family: 'Font Awesome 5 Free';
-  font-weight: 400;
-}

examples/web/static/libs/fontawesome/less/solid.less

@@ -1,20 +0,0 @@
-@import "_variables.less";
-
-@font-face {
-  font-family: 'Font Awesome 5 Free';
-  font-style: normal;
-  font-weight: 900;
-  font-display: @fa-font-display;
-  src: url('@{fa-font-path}/fa-solid-900.eot');
-  src: url('@{fa-font-path}/fa-solid-900.eot?#iefix') format('embedded-opentype'),
-    url('@{fa-font-path}/fa-solid-900.woff2') format('woff2'),
-    url('@{fa-font-path}/fa-solid-900.woff') format('woff'),
-    url('@{fa-font-path}/fa-solid-900.ttf') format('truetype'),
-    url('@{fa-font-path}/fa-solid-900.svg#fontawesome') format('svg');
-}
-
-.fa,
-.fas {
-  font-family: 'Font Awesome 5 Free';
-  font-weight: 900;
-}

examples/web/static/libs/fontawesome/less/v4-shims.less

@@ -1,2 +0,0 @@
-@import '_variables.less';
-@import '_shims.less';