com.allen_sauer.gwt.dnd.client.drop

Class VerticalPanelDropController

java.lang.Object

com.allen_sauer.gwt.dnd.client.drop.AbstractDropController

com.allen_sauer.gwt.dnd.client.drop.AbstractPositioningDropController

com.allen_sauer.gwt.dnd.client.drop.AbstractInsertPanelDropController

com.allen_sauer.gwt.dnd.client.drop.VerticalPanelDropController

All Implemented Interfaces:

DropController

public class VerticalPanelDropController
extends AbstractInsertPanelDropController

A DropController for instances of VerticalPanel. TODO VerticalPanel performance is slow because of positioner DOM manipulation

Field Summary

Fields inherited from class com.allen_sauer.gwt.dnd.client.drop.AbstractInsertPanelDropController

dropTarget

Constructor Summary

Constructors

Constructor and Description
VerticalPanelDropController(com.google.gwt.user.client.ui.VerticalPanel dropTarget) Construct an VerticalPanelDropController.

Method Summary

Methods

Modifier and Type	Method and Description
protected LocationWidgetComparator	getLocationWidgetComparator() Required implementation method which provides the desired comparator strategy.
protected com.google.gwt.user.client.ui.Widget	newPositioner(DragContext context) Called by AbstractInsertPanelDropController.onEnter(DragContext) to create a new positioner widget for this InsertPanel drop target.

Methods inherited from class com.allen_sauer.gwt.dnd.client.drop.AbstractInsertPanelDropController

onDrop, onEnter, onLeave, onMove, onPreviewDrop

Methods inherited from class com.allen_sauer.gwt.dnd.client.drop.AbstractDropController

getDropTarget

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

VerticalPanelDropController

public VerticalPanelDropController(com.google.gwt.user.client.ui.VerticalPanel dropTarget)

Construct an VerticalPanelDropController.

Parameters:

dropTarget - the VerticalPanel drop target

Method Detail

getLocationWidgetComparator

protected LocationWidgetComparator getLocationWidgetComparator()

Description copied from class: AbstractInsertPanelDropController

Required implementation method which provides the desired comparator strategy.

Specified by:

getLocationWidgetComparator in class AbstractInsertPanelDropController

Returns:

the comparator strategy to be used

newPositioner

protected com.google.gwt.user.client.ui.Widget newPositioner(DragContext context)

Description copied from class: AbstractInsertPanelDropController

Called by AbstractInsertPanelDropController.onEnter(DragContext) to create a new positioner widget for this InsertPanel drop target. Override this method to customize the look and feel of your positioner. The positioner widget may not have any CSS borders or margins, although there are no such restrictions on the children of the positioner widget. If borders and/or margins are desired, wrap that widget in a SimplePanel with a 0px border and margin.

Specified by:

newPositioner in class AbstractInsertPanelDropController

Parameters:

context - The current drag context.

Returns:

a new positioner widget