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         wlxmlDocument.on('contentSet', function() {
  26             this.canvas.loadWlxmlDocument(wlxmlDocument);
  27         }, this);
  28     }
  29 });
  30
  31 var handlers = {
  32     nodeAttrChange: function(event) {
  33         if(event.meta.attr === 'class') {
  34             var canvasNode = utils.findCanvasElement(event.meta.node);
  35             canvasNode.setWlxmlClass(event.meta.newVal);
  36         }
  37     },
  38     nodeTagChange: function(event) {
  39         var canvasNode = utils.findCanvasElement(event.meta.node);
  40         canvasNode.setWlxmlTag(event.meta.newTagName);
  41     }
  42 };
  43
  44 return {
  45     create: function(canvas) {
  46         return new Listener(canvas);
  47     }
  48 };
  49
  50 });