X-Git-Url: http://git.phpeclipse.com

diff --git a/net.sourceforge.phpeclipse.webbrowser/src/net/sourceforge/phpeclipse/webbrowser/internal/BusyIndicator.java b/net.sourceforge.phpeclipse.webbrowser/src/net/sourceforge/phpeclipse/webbrowser/internal/BusyIndicator.java
new file mode 100644
index 0000000..baadaeb
--- /dev/null
+++ b/net.sourceforge.phpeclipse.webbrowser/src/net/sourceforge/phpeclipse/webbrowser/internal/BusyIndicator.java
@@ -0,0 +1,157 @@
+/**
+ * Copyright (c) 2003 IBM Corporation and others.
+ * All rights reserved.   This program and the accompanying materials
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ *
+ * Contributors:
+ *    IBM - Initial API and implementation
+ */
+package net.sourceforge.phpeclipse.webbrowser.internal;
+
+import org.eclipse.swt.widgets.*;
+import org.eclipse.swt.events.*;
+import org.eclipse.swt.graphics.*;
+/**
+ * An animated image to show busy status of the Web browser.
+ */
+public class BusyIndicator extends Canvas {
+	protected Image[] images;
+	protected Image image;
+
+	protected Thread busyThread;
+	protected boolean stop;
+
+	/**
+	 * BusyWidget constructor comment.
+	 * @param parent org.eclipse.swt.widgets.Composite
+	 * @param style int
+	 */
+	public BusyIndicator(Composite parent, int style) {
+		super(parent, style);
+	
+		images = ImageResource.getBusyImages();
+	
+		addPaintListener(new PaintListener() {
+			public void paintControl(PaintEvent event) {
+				onPaint(event);
+			}
+		});
+	
+		image = images[0];
+	}
+	
+	public Point computeSize(int wHint, int hHint, boolean changed) {
+		return new Point(25, 25);
+	}
+	
+	/**
+	 * Creates a thread to animate the image.
+	 */
+	protected synchronized void createBusyThread() {
+		if (busyThread != null)
+			return;
+	
+		stop = false;
+		busyThread = new Thread() {
+			protected int count;
+			public void run() {
+				try {
+					count = 1;
+					while (!stop) {
+						Display.getDefault().syncExec(new Runnable() {
+							public void run() {
+								if (!stop) {
+									if (count < 13)
+										setImage(images[count]);
+									count++;
+									if (count > 12)
+										count = 1;
+								}
+							}
+						});
+						try {
+							sleep(125);
+						} catch (Exception e) { }
+					}
+					if (busyThread == null)
+						Display.getDefault().syncExec(new Thread() {
+							public void run() {
+								setImage(images[0]);
+							}
+						});
+				} catch (Exception e) {
+					Trace.trace(Trace.WARNING, "Busy error", e);
+				}
+			}
+		};
+	
+		busyThread.setPriority(Thread.NORM_PRIORITY + 2);
+		busyThread.setDaemon(true);
+		busyThread.start();
+	}
+	
+	public void dispose() {
+		stop = true;
+		busyThread = null;
+		super.dispose();
+	}
+	
+	/**
+	 * Return the image or <code>null</code>.
+	 */
+	public Image getImage() {
+		return image;
+	}
+
+	/**
+	 * Returns true if it is currently busy.
+	 *
+	 * @return boolean
+	 */
+	public boolean isBusy() {
+		return (busyThread != null);
+	}
+
+	/* 
+	 * Process the paint event
+	 */
+	protected void onPaint(PaintEvent event) {
+		Rectangle rect = getClientArea();
+		if (rect.width == 0 || rect.height == 0)
+			return;
+	
+		GC gc = event.gc;
+		if (image != null)
+			gc.drawImage(image, 2, 2);
+	}
+
+	/**
+	 * Sets the indicators busy count up (true) or down (false) one.
+	 *
+	 * @param busy boolean
+	 */
+	public synchronized void setBusy(boolean busy) {
+		if (busy) {
+			if (busyThread == null)
+				createBusyThread();
+		} else {
+			if (busyThread != null) {
+				stop = true;
+				busyThread = null;
+			}
+		}
+	}
+
+	/**
+	 * Set the image.
+	 * The value <code>null</code> clears it.
+	 */
+	public void setImage(Image image) {
+		if (image != this.image && !isDisposed()) {
+			this.image = image;
+			redraw();
+		}
+	}
+}
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