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/*
* Copyright (c) 2005-2006 Laf-Widget Kirill Grouchnikov. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* o Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* o Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* o Neither the name of Laf-Widget Kirill Grouchnikov nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.jvnet.lafwidget.layout;
import java.awt.Container;
import java.awt.LayoutManager;
/**
* Transition layout manager. Contains method for installing / uninstalling
* transition layout effects on containers. Application code should use the
* methods in this class instead of using the {@link TransitionLayout} class
* directly.
*
* @author Kirill Grouchnikov.
*/
public class TransitionLayoutManager {
/**
* Singleton manager.
*/
private static TransitionLayoutManager instance;
/**
* Returns the manager instance.
*
* @return Manager instance.
*/
public synchronized static TransitionLayoutManager getInstance() {
if (instance == null)
instance = new TransitionLayoutManager();
return instance;
}
/**
* Starts tracking the specified container adding the transition layout
* effects. This method can be called on a container that already has
* transition layout effects installed - in this case the call will have no
* effect (preserving the transition layout effects).
*
* @param container
* Container for transition layout effects.
* @param hasFades
* Indication whether the fade effects should be applied. Use
* true only for look-and-feels that honour the
* {@link TransitionLayout#ALPHA} client property (directly, via
* calls to
* {@link TransitionLayout#getAlphaComposite(java.awt.Component)} /
* {@link TransitionLayout#getAlphaComposite(java.awt.Component, float)}
* or with the bytecode augmentation.
*/
public void track(Container container, boolean hasFades) {
this.track(container, hasFades, false);
}
/**
* Starts tracking the specified container adding the transition layout
* effects. Note that providing true for the
* doImmediateRepaint parameter will result in very
* CPU-intensive code - this is not recommended for now. This method can be
* called on a container that already has transition layout effects
* installed - in this case the call will have no effect (preserving the
* transition layout effects).
*
* @param container
* Container for transition layout effects.
* @param hasFades
* Indication whether the fade effects should be applied. Use
* true only for look-and-feels that honour the
* {@link TransitionLayout#ALPHA} client property (directly, via
* calls to
* {@link TransitionLayout#getAlphaComposite(java.awt.Component)} /
* {@link TransitionLayout#getAlphaComposite(java.awt.Component, float)}
* or with the bytecode augmentation.
* @param doImmediateRepaint
* If true, every transition step will result in
* repainting the relevant component. Recommended value is
* false for better performance.
*/
public void track(Container container, boolean hasFades,
boolean doImmediateRepaint) {
LayoutManager currLayout = container.getLayout();
if (currLayout instanceof TransitionLayout)
return;
TransitionLayout layout = new TransitionLayout(container, container
.getLayout(), hasFades);
layout.setDoImmediateRepaint(doImmediateRepaint);
container.setLayout(layout);
}
/**
* Removes the transition layout effects from the specified container. The
* layout manager is reset to the original layout manager. This method can
* be called on a container that hadn't been tracked with
* {@link #track(Container, boolean)} or
* {@link #track(Container, boolean, boolean)}.
*
* @param container
* Container.
*/
public void untrack(Container container) {
LayoutManager layout = container.getLayout();
if (layout instanceof TransitionLayout) {
TransitionLayout tLayout = (TransitionLayout) layout;
tLayout.uninstallBorders(container);
container.setLayout(tLayout.getDelegate());
}
}
}
