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https://github.com/bergie/hallo

Simple rich text editor (contentEditable) for jQuery UI
https://github.com/bergie/hallo

jquery-ui rich-text-editor

Last synced: 3 months ago
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Simple rich text editor (contentEditable) for jQuery UI

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README 

        
Hallo - contentEditable for jQuery UI [![Build Status](https://secure.travis-ci.org/bergie/hallo.png)](http://travis-ci.org/bergie/hallo) [![Greenkeeper badge](https://badges.greenkeeper.io/bergie/hallo.svg)](https://greenkeeper.io/)

=====================================



![Hallo Editor logo](https://raw.github.com/bergie/hallo/master/design/logo-200x59.png)



[![Cross-browser testing status](https://saucelabs.com/browser-matrix/hallo-js.svg)](https://saucelabs.com/u/hallo-js)



Hallo is a very simple in-place rich text editor for web pages. It uses jQuery UI and the [HTML5 contentEditable functionality](https://developer.mozilla.org/en/rich-text_editing_in_mozilla) to edit web content.



The widget has been written as a simple and liberally licensed editor. It doesn't aim to replace popular editors like [Aloha](http://aloha-editor.org), but instead to provide a simpler and more reusable option.



Read the [introductory blog post](http://bergie.iki.fi/blog/hallo-editor/) for more information.



## Using the editor



You need jQuery, jQuery UI (1.10+), and [Rangy](https://code.google.com/p/rangy/) loaded. An easy way to do this is to use Google's JS service:



```html



```



The editor toolbar is using jQuery UI theming, so you'll probably also want to [grab a theme](http://jqueryui.com/themeroller/) that fits your needs. Toolbar pluggins use icons from [Font Awesome](http://fortawesome.github.com/Font-Awesome/). Check these [integration instructions](http://fortawesome.github.com/Font-Awesome/#integration) for the right way to include Font Awesome depending on if/how you use Twitter Bootstrap. To style the toolbar as it appears in the demo, you'll also want to add some CSS (like background and border) to the class `hallotoolbar`.



```html



```



Then include Hallo itself:



```html



```



Editor activation is easy:



```javascript

jQuery('p').hallo();

```



You can also deactivate the editor:



```javascript

jQuery('p').hallo({editable: false});

```



Hallo itself only makes the selected DOM elements editable and doesn't provide any formatting tools. Formatting is accomplished by loading plugins when initializing Hallo. Even simple things like *bold* and *italic* are plugins:



```javascript

jQuery('.editable').hallo({

  plugins: {

    'halloformat': {}

  }

});

```



This example would enable the simple formatting plugin that provides functionality like _bold_ and _italic_. You can include as many Hallo plugins as you want, and if necessary pass them options.



Hallo has got more options you set when instantiating. See the [hallo.coffee](https://github.com/bergie/hallo/blob/master/src/hallo.coffee) file for further documentation.



### Events



Hallo provides some events that are useful for integration. You can use [jQuery bind](http://api.jquery.com/bind/) to subscribe to them:



* `halloenabled`: Triggered when an editable is enabled (`editable` set to `true`)

* `hallodisabled`: Triggered when an editable is disabled (`editable` set to `false`)

* `hallomodified`: Triggered whenever user has changed the contents being edited. Event data key `content` contains the HTML

* `halloactivated`: Triggered when user activates an editable area (usually by clicking it)

* `hallodeactivated`: Triggered when user deactivates an editable area



## Plugins



* halloformat - Adds Bold, Italic, StrikeThrough and Underline support to the toolbar. (Enable/Disable with options: "formattings": {"bold": true, "italic": true, "strikethrough": true, "underline": false})

* halloheadings - Adds support for H1, H2, H3. You can pass a headings option key to specify what is going to be displayed (e.g. "formatBlocks":["p", "h2","h3"])

* hallojustify - Adds align left, center, right support

* hallolists - Adds support for ordered and unordered lists (Pick with options: "lists": {"ordered": false, "unordered": true})

* halloreundo - Adds support for undo and redo

* hallolink - Adds support to add links to a selection (currently not working)

* halloimage - Image uploading, searching, suggestions

* halloblacklist - Filtering unwanted tags from the content



## Licensing



Hallo is free software available under the [MIT license](http://en.wikipedia.org/wiki/MIT_License).



## Contributing



Hallo is written in [CoffeeScript](http://jashkenas.github.com/coffee-script/), a simple language that compiles into JavaScript. You'll need Node.js to to build it. All build dependencies can be installed with:



    $ npm install



To generate the JavaScript code to `dist/hallo.js` from Hallo sources, run [Grunt](http://gruntjs.com):



    $ grunt build



Hallo development is coordinated using Git. Just fork the [Hallo repository on GitHub](https://github.com/bergie/hallo) and [send pull requests](http://help.github.com/pull-requests/).



### Unit tests



We use the Travis continuous integration service for testing Hallo. Currently we run two types of tests:



* [CoffeeLint](http://www.coffeelint.org/) for ensuring compliance with [coding standards](https://github.com/polarmobile/coffeescript-style-guide)

* Some [QUnit](http://qunitjs.com/) tests



You can run the unit tests locally by opening `test/index.html` in your browser, or with [PhantomJS](http://phantomjs.org/) by running:



    $ grunt test



or:



    $ npm test



### Writing plugins



Hallo plugins are written as regular [jQuery UI widgets](http://semantic-interaction.org/blog/2011/03/01/jquery-ui-widget-factory/).



When Hallo is loaded it will also load all the enabled plugins for the element, and pass them some additional options:



* `editable`: The main Hallo widget instance

* `uuid`: unique identifier of the Hallo instance, can be used for element IDs



A simplistic plugin would look like the following:



```coffeescript

#    Formatting plugin for Hallo

#    (c) 2011 Henri Bergius, IKS Consortium

#    Hallo may be freely distributed under the MIT license

((jQuery) ->

  jQuery.widget "IKS.halloformat",

    boldElement: null



    options:

      uuid: ''

      editable: null



    _create: ->

      # Add any actions you want to run on plugin initialization

      # here



    populateToolbar: (toolbar) ->

      # Create an element for holding the button

      @boldElement = jQuery ''



      # Use Hallo Button

      @boldElement.hallobutton

        uuid: @options.uuid

        editable: @options.editable

        label: 'Bold'

        # Icons come from Font Awesome

        icon: 'icon-bold'

        # Commands are used for execCommand and queryCommandState

        command: 'bold'



      # Append the button to toolbar

      toolbar.append @boldElement



    cleanupContentClone: (element) ->

      # Perform content clean-ups before HTML is sent out



)(jQuery)

```