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

diff --git a/archive/net.sourceforge.phpeclipse.wiki/src/net/sourceforge/phpeclipse/wiki/preferences/InfiniteSubProgressMonitor.java b/archive/net.sourceforge.phpeclipse.wiki/src/net/sourceforge/phpeclipse/wiki/preferences/InfiniteSubProgressMonitor.java
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+/*******************************************************************************
+ * Copyright (c) 2000, 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 Corporation - initial API and implementation
+ *******************************************************************************/
+package net.sourceforge.phpeclipse.wiki.preferences;
+
+ 
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.core.runtime.SubProgressMonitor;
+
+/**
+ * Provides an infinite progress monitor by subdividing by half repeatedly.
+ * 
+ * The ticks parameter represents the number of ticks shown in the progress dialog
+ * (or propogated up to a parent IProgressMonitor). The totalWork parameter provided
+ * in actually a hint used to determine how work is translated into ticks.
+ * The number of totalWork that can actually be worked is n*totalWork/2 where
+ * 2^n = totalWork. What this means is that if you provide a totalWork of 32 (2^5) than
+ * the maximum number of ticks is 5*32/2 = 80.
+ * 
+ */
+public class InfiniteSubProgressMonitor extends SubProgressMonitor {
+
+	int totalWork;
+	int halfWay;
+	int currentIncrement;
+	int nextProgress;
+	int worked;
+		
+	/**
+	 * Constructor for InfiniteSubProgressMonitor.
+	 * @param monitor
+	 * @param ticks
+	 */
+	public InfiniteSubProgressMonitor(IProgressMonitor monitor, int ticks) {
+		this(monitor, ticks, 0);
+	}
+
+	/**
+	 * Constructor for InfiniteSubProgressMonitor.
+	 * @param monitor
+	 * @param ticks
+	 * @param style
+	 */
+	public InfiniteSubProgressMonitor(IProgressMonitor monitor, int ticks, int style) {
+		super(monitor, ticks, style);
+	}
+	
+	public void beginTask(String name, int totalWork) {
+		super.beginTask(name, totalWork);
+		this.totalWork = totalWork;
+		this.halfWay = totalWork / 2;
+		this.currentIncrement = 1;
+		this.nextProgress = currentIncrement;
+		this.worked = 0;
+	}
+	
+	public void worked(int work) {
+		if (worked >= totalWork) return;
+		if (--nextProgress <= 0) {
+			super.worked(1);
+			worked++;
+			if (worked >= halfWay) {
+				// we have passed the current halfway point, so double the
+				// increment and reset the halfway point.
+				currentIncrement *= 2;
+				halfWay += (totalWork - halfWay) / 2;				
+			}
+			// reset the progress counter to another full increment
+			nextProgress = currentIncrement;
+		}			
+	}
+
+	/**
+	 * Don't allow clearing of the subtask. This will stop the flickering
+	 * of the subtask in the progress dialogs.
+	 * 
+	 * @see IProgressMonitor#subTask(String)
+	 */
+	public void subTask(String name) {
+		if(name != null && ! name.equals("")) { //$NON-NLS-1$
+			super.subTask(name);
+		}
+	}
+}
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