Class YAHOO.util.DDProxy

Extends YAHOO.util.DD.

Defined in: dragdrop.js.

Class Summary
Constructor Attributes	Constructor Name and Description
	YAHOO.util.DDProxy(id, sGroup, config) A DragDrop implementation that inserts an empty, bordered div into the document that follows the cursor during drag operations.

Field Summary
Field Attributes	Field Name and Description
<private>	_previousSize Previous proxy element size.
	centerFrame By default the frame is positioned exactly where the drag element is, so we use the cursor offset provided by YAHOO.util.DD.
<static>	YAHOO.util.DDProxy.dragElId The default drag frame div id
	resizeFrame By default we resize the drag frame to be the same size as the element we want to drag (this is to get the frame effect).

Fields borrowed from class YAHOO.util.DD:: scroll

Method Summary
Method Attributes	Method Name and Description
	createFrame() Create the drag frame if needed
	initFrame() Initialization for the drag frame element.
<private>	showFrame(iPageX, iPageY) Resizes the drag frame to the dimensions of the clicked object, positions it over the object, and finally displays it

Methods borrowed from class YAHOO.util.DD:: alignElWithMouse, autoOffset, autoScroll, b4Drag, b4MouseDown, cachePosition, getTargetCoord, setDelta, setDragElPos

Class Detail

YAHOO.util.DDProxy(id, sGroup, config)

A DragDrop implementation that inserts an empty, bordered div into the document that follows the cursor during drag operations. At the time of the click, the frame div is resized to the dimensions of the linked html element, and moved to the exact location of the linked element. References to the "frame" element refer to the single proxy element that was created to be dragged in place of all DDProxy elements on the page.

Parameters:
{String} id: the id of the linked html element
{String} sGroup: the group of related DragDrop objects
{object} config: an object containing configurable attributes Valid properties for DDProxy in addition to those in DragDrop: resizeFrame, centerFrame, dragElId

Field Detail

<private> _previousSize

Previous proxy element size.

{boolean} centerFrame

By default the frame is positioned exactly where the drag element is, so we use the cursor offset provided by YAHOO.util.DD. Another option that works only if you do not have constraints on the obj is to have the drag frame centered around the cursor. Set centerFrame to true for this effect.

<static> {String} YAHOO.util.DDProxy.dragElId

The default drag frame div id

{boolean} resizeFrame

By default we resize the drag frame to be the same size as the element we want to drag (this is to get the frame effect). We can turn it off if we want a different behavior.

Method Detail

createFrame()

Create the drag frame if needed

initFrame()

Initialization for the drag frame element. Must be called in the constructor of all subclasses

<private> showFrame(iPageX, iPageY)

Resizes the drag frame to the dimensions of the clicked object, positions it over the object, and finally displays it

Parameters:
{int} iPageX: X click position
{int} iPageY: Y click position

Classes

Class YAHOO.util.DDProxy