Class Ext.data.Errors

Adds listeners to any Observable object (or Element) which are automatically removed when this Component is destroyed.

Enables events fired by this Observable to bubble up an owner hierarchy by calling this.getBubbleTarget() if present. There is no implementation in the Observable base class.

This is commonly used by Ext.Components to bubble events to owner Containers. See Ext.Component.getBubbleTarget. The default implementation in Ext.Component returns the Component's immediate owner. But if a known target is required, this can be overridden to access the required target more quickly.

Example:

Ext.override(Ext.form.Field, {
//  Add functionality to Field's initComponent to enable the change event to bubble
initComponent : Ext.createSequence(Ext.form.Field.prototype.initComponent, function() {
    this.enableBubble('change');
}),

//  We know that we want Field's events to bubble directly to the FormPanel.
getBubbleTarget : function() {
    if (!this.formPanel) {
        this.formPanel = this.findParentByType('form');
    }
    return this.formPanel;
}
});

var myForm = new Ext.formPanel({
title: 'User Details',
items: [{
    ...
}],
listeners: {
    change: function() {
        // Title goes red if form has been modified.
        myForm.header.setStyle('color', 'red');
    }
}
});

Filters the objects in this collection by a set of Filters, or by a single property/value pair with optional parameters for substring matching and case sensitivity. See Filter for an example of using Filter objects (preferred). Alternatively, MixedCollection can be easily filtered by property like this:

//create a simple store with a few people defined
var people = new Ext.util.MixedCollection();
people.addAll([
    {id: 1, age: 25, name: 'Ed'},
    {id: 2, age: 24, name: 'Tommy'},
    {id: 3, age: 24, name: 'Arne'},
    {id: 4, age: 26, name: 'Aaron'}
]);

//a new MixedCollection containing only the items where age == 24
var middleAged = people.filter('age', 24);

Fires the specified event with the passed parameters (minus the event name).

An event may be set to bubble up an Observable parent hierarchy (See Ext.Component.getBubbleTarget) by calling enableBubble.

// normal way
var mc = new Ext.util.MixedCollection();
mc.add(someEl.dom.id, someEl);
mc.add(otherEl.dom.id, otherEl);
//and so on

// using getKey
var mc = new Ext.util.MixedCollection();
mc.getKey = function(el){
   return el.dom.id;
};
mc.add(someEl);
mc.add(otherEl);

// or via the constructor
var mc = new Ext.util.MixedCollection(false, function(el){
   return el.dom.id;
});
mc.add(someEl);
mc.add(otherEl);