com.google.gwt.user.client.ui

Class LayoutCommand

java.lang.Object

com.google.gwt.user.client.ui.LayoutCommand

All Implemented Interfaces:

Scheduler.ScheduledCommand

public class LayoutCommand
extends java.lang.Object
implements Scheduler.ScheduledCommand

A scheduled command used by animated layouts to ensure that only layout is ever performed for a panel within a given user event.

Note: This class assumes that Layer.getUserObject() will return the widget associated with a given layer.

Constructor Summary

Constructors

Constructor and Description
LayoutCommand(Layout layout) Creates a new command for the given layout object.

Method Summary

Modifier and Type	Method and Description
void	cancel() Cancels this command.
protected void	doBeforeLayout() Called before the layout is executed.
void	execute() Invokes the command.
void	schedule(int duration, Layout.AnimationCallback callback) Schedules a layout.

Methods inherited from class java.lang.Object

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

Constructor Detail

LayoutCommand

public LayoutCommand(Layout layout)

Creates a new command for the given layout object.

Parameters:

layout -

Method Detail

cancel

public void cancel()

Cancels this command. A subsequent call to schedule(int, Layout.AnimationCallback) will re-enable it.

execute

public final void execute()

Description copied from interface: Scheduler.ScheduledCommand

Invokes the command.

Specified by:

execute in interface Scheduler.ScheduledCommand

schedule

public void schedule(int duration,
                     Layout.AnimationCallback callback)

Schedules a layout. The duration and callback passed to this method will supercede any previous call that has not yet been executed.

Parameters:

duration -

callback -

doBeforeLayout

protected void doBeforeLayout()

Called before the layout is executed. Override this method to perform any work that needs to happen just before it.