* @extends Ext.dd.DragTracker
* <p>A subclass of Ext.dd.DragTracker which handles dragging any Component.</p>
* <p>This is configured with a Component to be made draggable, and a config object for the
* {@link Ext.dd.DragTracker} class.</p>
* <p>A {@link #} delegate may be provided which may be either the element to use as the mousedown target
* or a {@link Ext.DomQuery} selector to activate multiple mousedown targets.</p>
* @extends Ext.dd.DragTracker
* <p>A subclass of Ext.dd.DragTracker which handles dragging any Component.</p>
* <p>This is configured with a Component to be made draggable, and a config object for the
* {@link Ext.dd.DragTracker} class.</p>
* <p>A {@link #} delegate may be provided which may be either the element to use as the mousedown target
* or a {@link Ext.DomQuery} selector to activate multiple mousedown targets.</p>