src/editor/modules/documentCanvas/canvas/elementsRegister.js

   1 define(function(require) {
   2
   3 'use strict';
   4 var _ = require('libs/underscore'),
   5     wlxml = require('wlxml/wlxml');
   6
   7
   8 var ElementsRegister = function(BaseType) {
   9     this._register = {};
  10     this.BaseType = BaseType;
  11 };
  12
  13 _.extend(ElementsRegister.prototype, {
  14     createCanvasElementType: function(elementPrototype) {
  15         var register = this;
  16         var Constructor = function() {
  17             register.BaseType.apply(this, Array.prototype.slice.call(arguments, 0));
  18         };
  19         Constructor.prototype = elementPrototype;
  20         return Constructor;
  21     },
  22     register: function(params) {
  23         params.klass = params.klass || '';
  24         params.prototype = params.prototype || Object.create({});
  25
  26         this._register[params.tag] = this._register[params.tag] || {};
  27         this._register[params.tag][params.klass] = this.createCanvasElementType(params.prototype);
  28     },
  29     getElement: function(params) {
  30         params.klass = params.klass || '';
  31         var Factory;
  32         if(this._register[params.tag]) {
  33             wlxml.getClassHierarchy(params.klass).reverse().some(function(klass) {
  34                 Factory = this._register[params.tag][klass];
  35                 if(Factory) {
  36                     return true;
  37                 }
  38             }.bind(this));
  39         }
  40         if(!Factory) {
  41             Factory = this.BaseType;
  42         }
  43         return Factory;
  44     }
  45 });
  46
  47
  48 return ElementsRegister;
  49
  50 });