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/*******************************************************************************
* Copyright (c) 2004, 2011 Tasktop Technologies and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Tasktop Technologies - initial API and implementation
*******************************************************************************/
package org.eclipse.mylyn.internal.tasks.ui.editors;
import org.eclipse.mylyn.commons.ui.CommonImages;
import org.eclipse.swt.SWTException;
import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.internal.WorkbenchPlugin;
/**
* Provides a spinner animation for the tab title of an editor.
*
* @author Shawn Minto
* @author Steffen Pingel
* @deprecated use {@link org.eclipse.mylyn.commons.workbench.BusyAnimator} instead
*/
@Deprecated
public class EditorBusyIndicator {
private class Animator implements Runnable {
int imageDataIndex = 0;
private final Image[] images;
private boolean stopped;
public Animator(Image[] images) {
this.images = images;
}
public void run() {
if (stopped) {
return;
}
try {
Image image = images[imageDataIndex];
imageDataIndex = (imageDataIndex + 1) % images.length;
if (updateTitleImage(image)) {
PlatformUI.getWorkbench().getDisplay().timerExec(DELAY, this);
}
} catch (Exception e) {
WorkbenchPlugin.log(e);
}
}
public void stop() {
stopped = true;
}
}
public static final int DELAY = 90;
private Animator animator;
private final IBusyEditor editor;
private Image[] images;
private Image oldImage;
public EditorBusyIndicator(IBusyEditor editor) {
this.editor = editor;
}
/**
* Starts the busy indication.
*
* @see #stop()
*/
public void start() {
if (animator != null) {
stop();
}
try {
if (images == null) {
images = CommonImages.getProgressImages();
// if image fails to load do not continue
if (images == null) {
return;
}
}
oldImage = editor.getTitleImage();
if (images.length > 1) {
animator = new Animator(images);
animator.run();
}
} catch (SWTException e) {
WorkbenchPlugin.log(e);
}
}
/**
* Stops the animation.
*
* @see #start()
*/
public void stop() {
if (animator != null) {
animator.stop();
animator = null;
updateTitleImage(oldImage);
oldImage = null;
}
}
private boolean updateTitleImage(final Image image) {
if (!PlatformUI.getWorkbench().isClosing()) {
if (image != null && !image.isDisposed()) {
editor.setTitleImage(image);
return true;
} else {
if (oldImage != null && !oldImage.isDisposed()) {
editor.setTitleImage(oldImage);
}
}
}
return false;
}
}
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