--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwtx/jface/text/projection/ChildDocument.d	Sat Aug 23 19:10:48 2008 +0200
@@ -0,0 +1,103 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2008 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.projection.ChildDocument;
+
+import dwt.dwthelper.utils;
+
+import dwtx.jface.text.BadLocationException;
+import dwtx.jface.text.IDocument;
+import dwtx.jface.text.IRegion;
+import dwtx.jface.text.Position;
+
+/**
+ * Implementation of a child document based on
+ * {@link dwtx.jface.text.projection.ProjectionDocument}. This class
+ * exists for compatibility reasons.
+ * <p>
+ * Internal class. This class is not intended to be used by clients.</p>
+ *
+ * @since 3.0
+ * @noinstantiate This class is not intended to be instantiated by clients.
+ * @noextend This class is not intended to be subclassed by clients.
+ */
+public class ChildDocument : ProjectionDocument {
+
+    /**
+     * Position reflecting a visible region. The exclusive end offset of the position
+     * is considered being overlapping with the visible region.
+     */
+    static private class VisibleRegion : Position {
+
+        /**
+         * Creates a new visible region.
+         *
+         * @param regionOffset the offset of the region
+         * @param regionLength the length of the region
+         */
+        public VisibleRegion(int regionOffset, int regionLength) {
+            super(regionOffset, regionLength);
+        }
+
+        /**
+         * If <code>regionOffset</code> is the end of the visible region and the <code>regionLength is 0</code>,
+         * the <code>regionOffset</code> is considered overlapping with the visible region.
+         *
+         * @see dwtx.jface.text.Position#overlapsWith(int, int)
+         */
+        public bool overlapsWith(int regionOffset, int regionLength) {
+            bool appending= (regionOffset is offset + length) && regionLength is 0;
+            return appending || super.overlapsWith(regionOffset, regionLength);
+        }
+    }
+
+    /**
+     * Creates a new child document.
+     *
+     * @param masterDocument @inheritDoc
+     */
+    public ChildDocument(IDocument masterDocument) {
+        super(masterDocument);
+    }
+
+    /**
+     * Returns the parent document of this child document.
+     *
+     * @return the parent document of this child document
+     * @see ProjectionDocument#getMasterDocument()
+     */
+    public IDocument getParentDocument() {
+        return getMasterDocument();
+    }
+
+    /**
+     * Sets the parent document range covered by this child document to the
+     * given range.
+     *
+     * @param offset the offset of the range
+     * @param length the length of the range
+     * @throws BadLocationException if the given range is not valid
+     */
+    public void setParentDocumentRange(int offset, int length) throws BadLocationException {
+        replaceMasterDocumentRanges(offset, length);
+    }
+
+    /**
+     * Returns the parent document range of this child document.
+     *
+     * @return the parent document range of this child document
+     */
+    public Position getParentDocumentRange() {
+        IRegion coverage= getDocumentInformationMapping().getCoverage();
+        return new VisibleRegion(coverage.getOffset(), coverage.getLength());
+    }
+}