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

   1 define([
   2 'libs/jquery',
   3 'modules/documentCanvas/canvas/utils',
   4 ], function($, utils) {
   5
   6 'use strict';
   7
   8 var Listener = function(canvas) {
   9     this.canvas = canvas;
  10 };
  11
  12 $.extend(Listener.prototype, {
  13     listenTo: function(wlxmlDocument) {
  14         if(wlxmlDocument === this.wlxmlDocument) {
  15             return;
  16         }
  17
  18         wlxmlDocument.on('change', function(event) {
  19             var handler = handlers[event.type];
  20             if(handler) {
  21                 handler.bind(this)(event);
  22             }
  23         }, this);
  24     }
  25 });
  26
  27 var handlers = {
  28     nodeAttrChange: function(event) {
  29         if(event.meta.attr === 'class') {
  30             var canvasNode = utils.findCanvasElement(event.meta.node);
  31             canvasNode.setWlxmlClass(event.meta.newVal);
  32         }
  33     }
  34 };
  35
  36 return {
  37     create: function(canvas) {
  38         return new Listener(canvas);
  39     }
  40 };
  41
  42 });