Class Ext.dd.Registry

Package:	Ext.dd
Class:	Registry
Extends:	Object
Defined In:	Registry.js

Provides easy access to all drag drop components that are registered on a page. Items can be retrieved either directly by DOM node id, or by passing in the drag drop event that occurred and looking up the event target.

This class is a singleton and cannot be created directly.

属性 - 方法 - 事件

公共属性

此类没有公共属性。

公共方法

方法		定义对象
	getHandle(`String/HTMLElement id`) : Object	Registry
	Returns the handle registered for a DOM Node by id	Registry
	getHandleFromEvent(`Event e`) : Object	Registry
	Returns the handle that is registered for the DOM node that is the target of the event	Registry
	getTarget(`String/HTMLElement id`) : Object	Registry
	Returns a custom data object that is registered for a DOM node by id	Registry
	getTargetFromEvent(`Event e`) : Object	Registry
	Returns a custom data object that is registered for the DOM node that is the target of the event	Registry
	register(`String/HTMLElement) element`, [`Object data`]) : void	Registry
	Resgister a drag drop element	Registry
	unregister(`String/HTMLElement) element`) : void	Registry
	Unregister a drag drop element	Registry

公共事件

此类没有公共事件。

方法详情

getHandle

public function getHandle(String/HTMLElement id)

Returns the handle registered for a DOM Node by id

参数：

id : String/HTMLElement
The DOM node or id to look up

返回：

Object
handle The custom handle data

This method is defined by Registry.

getHandleFromEvent

public function getHandleFromEvent(Event e)

Returns the handle that is registered for the DOM node that is the target of the event

参数：

e : Event
The event

返回：

Object
handle The custom handle data

This method is defined by Registry.

getTarget

public function getTarget(String/HTMLElement id)

Returns a custom data object that is registered for a DOM node by id

参数：

id : String/HTMLElement
The DOM node or id to look up

返回：

Object
data The custom data

This method is defined by Registry.

getTargetFromEvent

public function getTargetFromEvent(Event e)

Returns a custom data object that is registered for the DOM node that is the target of the event

参数：

e : Event
The event

返回：

Object
data The custom data

This method is defined by Registry.

register

public function register(String/HTMLElement) element, [Object data])

Resgister a drag drop element

参数：

element : String/HTMLElement)
The id or DOM node to register
data : Object
（可选） An custom data object that will be passed between the elements that are involved in drag drop operations. You can populate this object with any arbitrary properties that your own code knows how to interpret, plus there are some specific properties known to the Registry that should be populated in the data object (if applicable):
```
 Value Description
 --------- ------------------------------------------
 handles Array of DOM nodes that trigger dragging
 for the element being registered
 isHandle True if the element passed in triggers
 dragging itself, else false 
```

返回：

void

This method is defined by Registry.

unregister

public function unregister(String/HTMLElement) element)

Unregister a drag drop element

参数：

element : String/HTMLElement)
The id or DOM node to unregister

返回：

void

This method is defined by Registry.