--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/jface/text/DocumentPartitioningChangedEvent.d	Sat Aug 23 19:10:48 2008 +0200
@@ -0,0 +1,126 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2006 IBM Corporation 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:
+ *     IBM Corporation - initial API and implementation
+ * Port to the D programming language:
+ *     Frank Benoit <benoit@tionex.de>
+ *******************************************************************************/
+module dwtx.jface.text.DocumentPartitioningChangedEvent;
+
+import dwt.dwthelper.utils;
+
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+
+import dwtx.core.runtime.Assert;
+
+/**
+ * Event describing the change of document partitionings.
+ *
+ * @see dwtx.jface.text.IDocumentExtension3
+ * @since 3.0
+ */
+public class DocumentPartitioningChangedEvent {
+
+    /** The document whose partitionings changed */
+    private final IDocument fDocument;
+    /** The map of partitionings to changed regions. */
+    private final Map fMap= new HashMap();
+
+
+    /**
+     * Creates a new document partitioning changed event for the given document.
+     * Initially this event is empty, i.e. does not describe any change.
+     *
+     * @param document the changed document
+     */
+    public DocumentPartitioningChangedEvent(IDocument document) {
+        fDocument= document;
+    }
+
+    /**
+     * Returns the changed document.
+     *
+     * @return the changed document
+     */
+    public IDocument getDocument() {
+        return fDocument;
+    }
+
+    /**
+     * Returns the changed region of the given partitioning or <code>null</code>
+     * if the given partitioning did not change.
+     *
+     * @param partitioning the partitioning
+     * @return the changed region of the given partitioning or <code>null</code>
+     */
+    public IRegion getChangedRegion(String partitioning) {
+        return (IRegion) fMap.get(partitioning);
+    }
+
+    /**
+     * Returns the set of changed partitionings.
+     *
+     * @return the set of changed partitionings
+     */
+    public String[] getChangedPartitionings() {
+        String[] partitionings= new String[fMap.size()];
+        fMap.keySet().toArray(partitionings);
+        return partitionings;
+    }
+
+    /**
+     * Sets the specified range as changed region for the given partitioning.
+     *
+     * @param partitioning the partitioning
+     * @param offset the region offset
+     * @param length the region length
+     */
+    public void setPartitionChange(String partitioning, int offset, int length) {
+        Assert.isNotNull(partitioning);
+        fMap.put(partitioning, new Region(offset, length));
+    }
+
+    /**
+     * Returns <code>true</code> if the set of changed partitionings is empty,
+     * <code>false</code> otherwise.
+     *
+     * @return <code>true</code> if the set of changed partitionings is empty
+     */
+    public bool isEmpty() {
+        return fMap.isEmpty();
+    }
+
+    /**
+     * Returns the coverage of this event. This is the minimal region that
+     * contains all changed regions of all changed partitionings.
+     *
+     * @return the coverage of this event
+     */
+    public IRegion getCoverage() {
+        if (fMap.isEmpty())
+            return new Region(0, 0);
+
+        int offset= -1;
+        int endOffset= -1;
+        Iterator e= fMap.values().iterator();
+        while (e.hasNext()) {
+            IRegion r= (IRegion) e.next();
+
+            if (offset < 0 || r.getOffset() < offset)
+                offset= r.getOffset();
+
+            int end= r.getOffset() + r.getLength();
+            if (end > endOffset)
+                endOffset= end;
+        }
+
+        return new Region(offset, endOffset - offset);
+    }
+}