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rearrange plugins/dependencies

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Hakim El Hattab 2020-04-26 08:29:15 +02:00
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commit b61a6a6f10
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README.md
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@ -18,7 +18,6 @@ This project was started and is maintained by [@hakimel](https://github.com/haki
- [Initialization](#initialization)
- [Configuration](#configuration)
- [Presentation Size](#presentation-size)
- [Dependencies](#dependencies)
- [Ready Event](#ready-event)
- [Auto-Slide](#auto-slide)
- [Auto-Animate](#auto-animate)
@ -26,6 +25,8 @@ This project was started and is maintained by [@hakimel](https://github.com/haki
- [Vertical Slide Navigation](#vertical-slide-navigation)
- [Touch Navigation](#touch-navigation)
- [Lazy Loading](#lazy-loading)
- [Plugins](#plugins)
- [Dependencies](#dependencies)
- [API](#api)
- [Custom Key Bindings](#custom-key-bindings)
- [Slide Change Events](#slide-change-events)
@ -56,7 +57,6 @@ This project was started and is maintained by [@hakimel](https://github.com/haki
- [Server Side Speaker Notes](#server-side-speaker-notes)
- [Multiplexing](#multiplexing)
- [MathJax](#mathjax)
- [Plugins](#plugins)
- [License](#license)
#### More reading
@ -447,41 +447,6 @@ Reveal.initialize({
});
```
### Dependencies
Reveal.js doesn't _rely_ on any third party scripts to work but a few optional libraries are included by default. These libraries are loaded as dependencies in the order they appear, for example:
```javascript
Reveal.initialize({
dependencies: [
// Interpret Markdown in <section> elements
{ src: 'plugin/markdown/marked.js', condition: () => { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'plugin/markdown/markdown.js', condition: () => { return !!document.querySelector( '[data-markdown]' ); } },
// Syntax highlight for <code> elements
{ src: 'plugin/highlight/highlight.js', async: true },
// Zoom in and out with Alt+click
{ src: 'plugin/zoom-js/zoom.js', async: true },
// Speaker notes
{ src: 'plugin/notes/notes.js', async: true },
// MathJax
{ src: 'plugin/math/math.js', async: true }
]
});
```
You can add your own extensions using the same syntax. The following properties are available for each dependency object:
- **src**: Path to the script to load
- **async**: [optional] Flags if the script should load after reveal.js has started, defaults to false
- **callback**: [optional] Function to execute when the script has loaded
- **condition**: [optional] Function which must return true for the script to be loaded
You can also include dependencies which are bundled/already present on the page. To include a bundled plugin. replace the `src` property with a reference to a `plugin` instance:
- **plugin**: the plugin instance (see [Plugins](#plugins))
### Ready Event
A `ready` event is fired when reveal.js has loaded all non-async dependencies and is ready to start navigating. To check if reveal.js is already 'ready' you can call `Reveal.isReady()`.
@ -658,6 +623,67 @@ You can also change the default globally with the `preloadIframes` configuration
regardless of individual `data-preload` attributes. If set to `false`, all iframes will only be
loaded when they become visible.
### Plugins
Plugins should register themselves with reveal.js by calling `Reveal.registerPlugin( MyPlugin )`. Registered plugins _must_ expose a unique `id` property and can optionally expose an `init` function that reveal.js will call to initialize them.
When reveal.js is booted up via `initialize()`, it will go through all registered plugins and invoke their `init` methods. If the `init` method returns a Promise, reveal.js will wait for that promise to be fulfilled before finishing the startup sequence and firing the [ready](#ready-event) event. Here’s an example of a plugin that does some asynchronous work before reveal.js can proceed:
```javascript
let MyPlugin = {
id: ’my-plugin’,
init: deck => {
return new Promise( resolve => setTimeout( resolve, 3000 ) )
}
};
Reveal.initialize({
plugins: [ MyPlugin ]
}).then( () => {
console.log( ’Three seconds later...’ )
} );
```
Note that reveal.js will *not* wait for init Promise fulfillment if the plugin is loaded as an [async dependency](#dependencies). If the plugin’s init method does _not_ return a Promise, the plugin is considered ready right away and will not hold up the reveal.js startup sequence.
### Retrieving Plugins
If you want to check if a specific plugin is registered you can use the `Reveal.hasPlugin` method and pass in a plugin ID, for example: `Reveal.hasPlugin( ’myPlugin’ )`. If you want to retrieve a plugin instance you can use `Reveal.getPlugin( ’myPlugin’ )`.
### Dependencies
Reveal.js doesn’t _rely_ on any third party scripts to work but a few optional libraries are included by default. These libraries are loaded as dependencies in the order they appear, for example:
```javascript
Reveal.initialize({
dependencies: [
// Interpret Markdown in <section> elements
{ src: ’plugin/markdown/marked.js’, condition: () => { return !!document.querySelector( ’[data-markdown]’ ); } },
{ src: ’plugin/markdown/markdown.js’, condition: () => { return !!document.querySelector( ’[data-markdown]’ ); } },
// Syntax highlight for <code> elements
{ src: ’plugin/highlight/highlight.js’, async: true },
// Zoom in and out with Alt+click
{ src: ’plugin/zoom-js/zoom.js’, async: true },
// Speaker notes
{ src: ’plugin/notes/notes.js’, async: true },
// MathJax
{ src: ’plugin/math/math.js’, async: true }
]
});
```
You can add your own extensions using the same syntax. The following properties are available for each dependency object:
- **src**: Path to the script to load
- **async**: [optional] Flags if the script should load after reveal.js has started, defaults to false
- **callback**: [optional] Function to execute when the script has loaded
- **condition**: [optional] Function which must return true for the script to be loaded
You can also include dependencies which are bundled/already present on the page. To include a bundled plugin. replace the `src` property with a reference to a `plugin` instance:
- **plugin**: the plugin instance (see [Plugins](#plugins))
### API
The `Reveal` object exposes a JavaScript API for controlling navigation and reading state:
@ -1441,30 +1467,6 @@ If you want to include math inside of a presentation written in Markdown you nee
`$$ J(\theta_0,\theta_1) = \sum_{i=0} $$`
```
## Plugins
Plugins should register themselves with reveal.js by calling `Reveal.registerPlugin( MyPlugin )`. Registered plugins _must_ expose a unique `id` property and can optionally expose an `init` function that reveal.js will call to initialize them.
When reveal.js is booted up via `initialize()`, it will go through all registered plugins and invoke their `init` methods. If the `init` method returns a Promise, reveal.js will wait for that promise to be fulfilled before finishing the startup sequence and firing the [ready](#ready-event) event. Here's an example of a plugin that does some asynchronous work before reveal.js can proceed:
```javascript
let MyPlugin = {
id: 'myPlugin',
init: deck => new Promise( resolve => setTimeout( resolve, 3000 ) )
};
Reveal.initialize({
dependencies: [ { plugin: MyPlugin } ]
}).then( () => {
console.log( 'Three seconds later...' )
} );
```
Note that reveal.js will *not* wait for init Promise fulfillment if the plugin is loaded as an [async dependency](#dependencies). If the plugin's init method does _not_ return a Promise, the plugin is considered ready right away and will not hold up the reveal.js startup sequence.
### Retrieving Plugins
If you want to check if a specific plugin is registered you can use the `Reveal.hasPlugin` method and pass in a plugin ID, for example: `Reveal.hasPlugin( 'myPlugin' )`. If you want to retrieve a plugin instance you can use `Reveal.getPlugin( 'myPlugin' )`.
## License
MIT licensed