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<pre class="prettyprint lang-js"><span id='Ext-dd-DropTarget'>/**
</span> * A simple class that provides the basic implementation needed to make any element a drop target that can have
* draggable items dropped onto it. The drop has no effect until an implementation of notifyDrop is provided.
*/
Ext.define('Ext.dd.DropTarget', {
extend: 'Ext.dd.DDTarget',
requires: ['Ext.dd.ScrollManager'],
<span id='Ext-dd-DropTarget-method-constructor'> /**
</span> * Creates new DropTarget.
* @param {String/HTMLElement/Ext.Element} el The container element or ID of it.
* @param {Object} config
*/
constructor : function(el, config){
this.el = Ext.get(el);
Ext.apply(this, config);
if(this.containerScroll){
Ext.dd.ScrollManager.register(this.el);
}
this.callParent([this.el.dom, this.ddGroup || this.group,
{isTarget: true}]);
},
<span id='Ext-dd-DropTarget-cfg-ddGroup'> /**
</span> * @cfg {String} ddGroup
* A named drag drop group to which this object belongs. If a group is specified, then this object will only
* interact with other drag drop objects in the same group.
*/
<span id='Ext-dd-DropTarget-cfg-overClass'> /**
</span> * @cfg {String} [overClass=""]
* The CSS class applied to the drop target element while the drag source is over it.
*/
<span id='Ext-dd-DropTarget-cfg-dropAllowed'> /**
</span> * @cfg {String} dropAllowed
* The CSS class returned to the drag source when drop is allowed.
*/
dropAllowed : Ext.baseCSSPrefix + 'dd-drop-ok',
<span id='Ext-dd-DropTarget-cfg-dropNotAllowed'> /**
</span> * @cfg {String} dropNotAllowed
* The CSS class returned to the drag source when drop is not allowed.
*/
dropNotAllowed : Ext.baseCSSPrefix + 'dd-drop-nodrop',
// private
isTarget : true,
// private
isNotifyTarget : true,
<span id='Ext-dd-DropTarget-method-notifyEnter'> /**
</span> * The function a {@link Ext.dd.DragSource} calls once to notify this drop target that the source is now over the
* target. This default implementation adds the CSS class specified by overClass (if any) to the drop element
* and returns the dropAllowed config value. This method should be overridden if drop validation is required.
* @param {Ext.dd.DragSource} source The drag source that was dragged over this drop target
* @param {Event} e The event
* @param {Object} data An object containing arbitrary data supplied by the drag source
* @return {String} status The CSS class that communicates the drop status back to the source so that the
* underlying {@link Ext.dd.StatusProxy} can be updated
* @template
*/
notifyEnter : function(dd, e, data){
if(this.overClass){
this.el.addCls(this.overClass);
}
return this.dropAllowed;
},
<span id='Ext-dd-DropTarget-method-notifyOver'> /**
</span> * The function a {@link Ext.dd.DragSource} calls continuously while it is being dragged over the target.
* This method will be called on every mouse movement while the drag source is over the drop target.
* This default implementation simply returns the dropAllowed config value.
* @param {Ext.dd.DragSource} source The drag source that was dragged over this drop target
* @param {Event} e The event
* @param {Object} data An object containing arbitrary data supplied by the drag source
* @return {String} status The CSS class that communicates the drop status back to the source so that the
* underlying {@link Ext.dd.StatusProxy} can be updated
* @template
*/
notifyOver : function(dd, e, data){
return this.dropAllowed;
},
<span id='Ext-dd-DropTarget-method-notifyOut'> /**
</span> * The function a {@link Ext.dd.DragSource} calls once to notify this drop target that the source has been dragged
* out of the target without dropping. This default implementation simply removes the CSS class specified by
* overClass (if any) from the drop element.
* @param {Ext.dd.DragSource} source The drag source that was dragged over this drop target
* @param {Event} e The event
* @param {Object} data An object containing arbitrary data supplied by the drag source
* @template
*/
notifyOut : function(dd, e, data){
if(this.overClass){
this.el.removeCls(this.overClass);
}
},
<span id='Ext-dd-DropTarget-method-notifyDrop'> /**
</span> * The function a {@link Ext.dd.DragSource} calls once to notify this drop target that the dragged item has
* been dropped on it. This method has no default implementation and returns false, so you must provide an
* implementation that does something to process the drop event and returns true so that the drag source's
* repair action does not run.
* @param {Ext.dd.DragSource} source The drag source that was dragged over this drop target
* @param {Event} e The event
* @param {Object} data An object containing arbitrary data supplied by the drag source
* @return {Boolean} False if the drop was invalid.
* @template
*/
notifyDrop : function(dd, e, data){
return false;
},
destroy : function(){
this.callParent();
if(this.containerScroll){
Ext.dd.ScrollManager.unregister(this.el);
}
}
});
</pre>
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