TYPO3 Core

// Nullify EXTJS private handlers

Ext.each(this.keyMap.bindings, function (binding, index) {

this.keyMap.bindings[index] = null;

this.keyMap.handleKeyDown = null;

Ext.each(this.hotKeyMap.bindings, function (binding, index) {

this.hotKeyMap.bindings[index] = null;

this.hotKeyMap.handleKeyDown = null;

this.keyMap.disable();

this.hotKeyMap.disable();

// If the textarea is inside a form, on reset, re-initialize the HTMLArea content and update the toolbar

var form = this.textArea.dom.form;

if (form) {

if (typeof(form.htmlAreaPreviousOnReset) == 'undefined') {

form.htmlAreaPreviousOnReset = [];

}

fn: this.onFrameworkResize

},

beforedestroy: {

}

});

},

Ext.iterate(this.plugins, function (pluginId) {

this.unRegisterPlugin(pluginId);

}, this);

// Cleaning references to DOM in order to avoid IE memory leaks

this.wizards.dom = null;

this.textArea.parent().parent().dom = null;

this.textArea.parent().dom = null;

RTEarea[this.editorId].editor = null;

}

});