[EXTJS-4.1 SANDBOX] Ext.Element.purgeAllListeners doesn't work for image

[medifirst]

REQUIRED INFORMATIONExt version tested:

• Ext 4.1 ext-all-sandox-sandbox-dev

Browser versions tested against:

• chrome 20.0.37

DOCTYPE tested against:

• ____

Description:

• PurgeAllListeners doesn't work for image : an error appears:Uncaught TypeError: Cannot read property 'length' of undefined

Steps to reproduce the problem:

• add an image in html source
• create an Ext.Element
• call purAllListeners

The result that was expected:

• none error

The result that occurs instead:

• error : Uncaught TypeError : Cannot read property 'length' of undefined

Test Case:

<img id="test" src="http://www.sencha.com/img/20110215-feat-html5.png" />var elt = Ext4.get('test');
elt.purgeAllListeners();

HELPFUL INFORMATIONScreenshot or Video:

• attached

See this URL for live test case: http://Debugging already done:

• /**
  * Recursively removes all previous added listeners from an element and its children. Typically you will use {@link Ext.Element#purgeAllListeners}
  * directly on an Element in favor of calling this version.
  * @param {String/HTMLElement} el The id or html element from which to remove all event handlers.
  * @param {String} eventName (optional) The name of the event.
  */
  purgeElement : function(element, eventName) {
  var dom = Ext.getDom(element),
  i = 0, len;
  
  if (eventName) {
  EventManager.removeListener(element, eventName);
  }
  else {
  EventManager.removeAll(element);
  }
  
  if (dom && dom.childNodes) {
  for (len = element.childNodes.length; i < len; i++) {
  EventManager.purgeElement(element.childNodes[i], eventName);
  }
  }
  }

Possible fix:

• /**
  * Recursively removes all previous added listeners from an element and its children. Typically you will use {@link Ext.Element#purgeAllListeners}
  * directly on an Element in favor of calling this version.
  * @param {String/HTMLElement} el The id or html element from which to remove all event handlers.
  * @param {String} eventName (optional) The name of the event.
  */
  purgeElement : function(element, eventName) {
  var dom = Ext.getDom(element),
  i = 0, len;
  
  if (eventName) {
  EventManager.removeListener(element, eventName);
  }
  else {
  EventManager.removeAll(element);
  }
  
  if (dom && dom.childNodes && element.childNodes) {
  for (len = element.childNodes.length; i < len; i++) {
  EventManager.purgeElement(element.childNodes[i], eventName);
  }
  }
  }

Additional CSS used:

• only default ext-all-sandbox.css

Operating System:

• fedora core 12