mediawiki-extensions-Visual.../modules/syntaxhighlight/ve.ce.MWSyntaxHighlightNode.js

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/*!
* VisualEditor ContentEditable MWSyntaxHighlightNode class.
*
* @copyright 2011-2013 VisualEditor Team and others; see AUTHORS.txt
* @license The MIT License (MIT); see LICENSE.txt
*/
/**
* ContentEditable MediaWiki syntaxhighlight node.
*
* @class
* @extends ve.ce.LeafNode
* @mixins ve.ce.FocusableNode
* @mixins ve.ce.ProtectedNode
* @mixins ve.ce.GeneratedContentNode
*
* @constructor
* @param {ve.dm.MWSyntaxHighlightNode} model Model to observe
* @param {Object} [config] Config options
*/
ve.ce.MWSyntaxHighlightNode = function VeCeMWSyntaxHighlightNode( model, config ) {
// Parent constructor
ve.ce.LeafNode.call( this, model, config );
// Mixin constructors
ve.ce.FocusableNode.call( this );
ve.ce.ProtectedNode.call( this );
ve.ce.GeneratedContentNode.call( this );
// DOM Changes
this.$.addClass( 've-ce-MWSyntaxHighlightNode mwSyntaxHighlight' );
// Helpers
this.highlighter = null;
this.tokenizer = null;
// Events
this.model.connect( this, { 'update': 'update' } );
// Initialization
this.update();
};
/* Inheritance */
ve.inheritClass( ve.ce.MWSyntaxHighlightNode, ve.ce.LeafNode );
ve.mixinClass( ve.ce.MWSyntaxHighlightNode, ve.ce.FocusableNode );
ve.mixinClass( ve.ce.MWSyntaxHighlightNode, ve.ce.ProtectedNode );
ve.mixinClass( ve.ce.MWSyntaxHighlightNode, ve.ce.GeneratedContentNode );
/* Static Properties */
ve.ce.MWSyntaxHighlightNode.static.name = 'mwSyntaxHighlight';
ve.ce.MWSyntaxHighlightNode.static.tagName = 'div';
ve.ce.MWSyntaxHighlightNode.static.renderHtmlAttributes = true;
/* Methods */
/**
* Called when the node starts generating new content.
* @method
*/
ve.ce.MWSyntaxHighlightNode.prototype.startGenerating = function () {
var lang = this.model.getAttribute( 'lang' );
// Properties
this.$wrapper = this.$$( '<div>' );
this.$code = this.$$( '<pre>' );
// Initialization
this.$wrapper
.addClass( lang + ' source-' + lang )
.append( this.$code );
// TODO perhaps replace with a prettier loading bar
this.$code.text( '[ Generating code preview... ]' );
this.highlighter = new ve.ce.MWSyntaxHighlightHighlighter( lang );
this.tokenizer = new ve.dm.MWSyntaxHighlightTokenizer();
};
/**
* Start a deferred process to generate the contents of the node.
* @returns {jQuery.Promise} Promise object
*/
ve.ce.MWSyntaxHighlightNode.prototype.generateContents = function () {
var data = this.model.getAttribute( 'body' ),
tokens = this.tokenizer.tokenize(data);
if ( this.highlighter.isSupportedLanguage() ){
if ( this.highlighter.isEnabledLanguage() ){
this.highlighter.initialize();
tokens = this.highlighter.mark(tokens, data, false);
this.$code.html(this.highlighter.displaySimple(tokens));
} else {
this.$code.html(this.highlighter.displaySimple(tokens));
this.$code.append( '>>>Support for this language is not enabled. Preview in plaintext.' );
}
} else {
this.$code.html(this.highlighter.displaySimple(tokens));
this.$code.append( '>>>This language is not supported. Preview in plaintext.' );
}
return this.$wrapper.promise();
};
/**
* Called when the has failed to generate new content.
* @method
*/
ve.ce.MWSyntaxHighlightNode.prototype.failGenerating = function () {
// TODO perhaps replace with a prettier sad face
this.$code.text( '[ Unable to generate code preview for this piece. ]' );
this.generatingPromise = null;
};
/**
* Called when the node successfully finishes generating new content.
*
* @method
* @param {jQuery} domElements jQuery object Generated content
*/
ve.ce.MWSyntaxHighlightNode.prototype.doneGenerating = function ( domElements ) {
var store = this.model.doc.getStore(),
hash = ve.getHash( this.model );
store.index( domElements.toArray() , hash );
this.render( domElements.toArray() );
this.generatingPromise = null;
};
/* Registration */
ve.ce.nodeFactory.register( ve.ce.MWSyntaxHighlightNode );