| Index: trunk/extensions/VisualEditor/modules/es/bases/es.DocumentNode.js |
| — | — | @@ -0,0 +1,44 @@ |
| | 2 | +/** |
| | 3 | + * Creates an es.DocumentNode object. |
| | 4 | + * |
| | 5 | + * @class |
| | 6 | + * @abstract |
| | 7 | + * @constructor |
| | 8 | + * @extends {es.EventEmitter} |
| | 9 | + */ |
| | 10 | +es.DocumentNode = function() { |
| | 11 | + // Inheritance |
| | 12 | + es.EventEmitter.call( this ); |
| | 13 | + |
| | 14 | + // Reusable function for passing update events upstream |
| | 15 | + var _this = this; |
| | 16 | + this.emitUpdate = function() { |
| | 17 | + _this.emit( 'update' ); |
| | 18 | + }; |
| | 19 | +}; |
| | 20 | + |
| | 21 | +/* Methods */ |
| | 22 | + |
| | 23 | +/** |
| | 24 | + * Gets the content length. |
| | 25 | + * |
| | 26 | + * @method |
| | 27 | + * @returns {Integer} Length of content |
| | 28 | + */ |
| | 29 | +es.DocumentNode.prototype.getContentLength = function() { |
| | 30 | + throw 'DocumentNode.getContentLength not implemented in this subclass:' + this.constructor; |
| | 31 | +}; |
| | 32 | + |
| | 33 | +/** |
| | 34 | + * Gets the element length. |
| | 35 | + * |
| | 36 | + * @method |
| | 37 | + * @returns {Integer} Length of content |
| | 38 | + */ |
| | 39 | +es.DocumentNode.prototype.getElementLength = function() { |
| | 40 | + throw 'DocumentNode.getElementLength not implemented in this subclass:' + this.constructor; |
| | 41 | +}; |
| | 42 | + |
| | 43 | +/* Inheritance */ |
| | 44 | + |
| | 45 | +es.extendClass( es.DocumentNode, es.EventEmitter ); |