--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sysmodelmgr/com.symbian.smt.gui/src/com/symbian/smt/gui/editors/xmleditor/NonRuleBasedDamagerRepairer.java	Thu Mar 11 19:08:43 2010 +0200
@@ -0,0 +1,153 @@
+// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+//
+
+
+
+package com.symbian.smt.gui.editors.xmleditor;
+
+import org.eclipse.core.runtime.Assert;
+import org.eclipse.jface.text.BadLocationException;
+import org.eclipse.jface.text.DocumentEvent;
+import org.eclipse.jface.text.IDocument;
+import org.eclipse.jface.text.IRegion;
+import org.eclipse.jface.text.ITypedRegion;
+import org.eclipse.jface.text.Region;
+import org.eclipse.jface.text.TextAttribute;
+import org.eclipse.jface.text.TextPresentation;
+import org.eclipse.jface.text.presentation.IPresentationDamager;
+import org.eclipse.jface.text.presentation.IPresentationRepairer;
+import org.eclipse.swt.custom.StyleRange;
+
+/**
+ * @author barbararosi-schwartz
+ * 
+ */
+public class NonRuleBasedDamagerRepairer implements IPresentationDamager,
+		IPresentationRepairer {
+
+	/** The document this object works on */
+	protected IDocument fDocument;
+	/**
+	 * The default text attribute if non is returned as data by the current
+	 * token
+	 */
+	protected TextAttribute fDefaultTextAttribute;
+
+	/**
+	 * Constructor for NonRuleBasedDamagerRepairer.
+	 */
+	public NonRuleBasedDamagerRepairer(TextAttribute defaultTextAttribute) {
+		Assert.isNotNull(defaultTextAttribute);
+
+		fDefaultTextAttribute = defaultTextAttribute;
+	}
+
+	/**
+	 * Adds style information to the given text presentation.
+	 * 
+	 * @param presentation
+	 *            the text presentation to be extended
+	 * @param offset
+	 *            the offset of the range to be styled
+	 * @param length
+	 *            the length of the range to be styled
+	 * @param attr
+	 *            the attribute describing the style of the range to be styled
+	 */
+	protected void addRange(TextPresentation presentation, int offset,
+			int length, TextAttribute attr) {
+		if (attr != null)
+			presentation.addStyleRange(new StyleRange(offset, length, attr
+					.getForeground(), attr.getBackground(), attr.getStyle()));
+	}
+
+	/**
+	 * @see IPresentationRepairer#createPresentation(TextPresentation,
+	 *      ITypedRegion)
+	 */
+	public void createPresentation(TextPresentation presentation,
+			ITypedRegion region) {
+		addRange(presentation, region.getOffset(), region.getLength(),
+				fDefaultTextAttribute);
+	}
+
+	/**
+	 * Returns the end offset of the line that contains the specified offset or
+	 * if the offset is inside a line delimiter, the end offset of the next
+	 * line.
+	 * 
+	 * @param offset
+	 *            the offset whose line end offset must be computed
+	 * @return the line end offset for the given offset
+	 * @exception BadLocationException
+	 *                if offset is invalid in the current document
+	 */
+	protected int endOfLineOf(int offset) throws BadLocationException {
+
+		IRegion info = fDocument.getLineInformationOfOffset(offset);
+		if (offset <= info.getOffset() + info.getLength())
+			return info.getOffset() + info.getLength();
+
+		int line = fDocument.getLineOfOffset(offset);
+		try {
+			info = fDocument.getLineInformation(line + 1);
+			return info.getOffset() + info.getLength();
+		} catch (BadLocationException x) {
+			return fDocument.getLength();
+		}
+	}
+
+	/**
+	 * @see IPresentationDamager#getDamageRegion(ITypedRegion, DocumentEvent,
+	 *      boolean)
+	 */
+	public IRegion getDamageRegion(ITypedRegion partition, DocumentEvent event,
+			boolean documentPartitioningChanged) {
+		if (!documentPartitioningChanged) {
+			try {
+
+				IRegion info = fDocument.getLineInformationOfOffset(event
+						.getOffset());
+				int start = Math.max(partition.getOffset(), info.getOffset());
+
+				int end = event.getOffset()
+						+ (event.getText() == null ? event.getLength() : event
+								.getText().length());
+
+				if (info.getOffset() <= end
+						&& end <= info.getOffset() + info.getLength()) {
+					// optimize the case of the same line
+					end = info.getOffset() + info.getLength();
+				} else
+					end = endOfLineOf(end);
+
+				end = Math.min(partition.getOffset() + partition.getLength(),
+						end);
+				return new Region(start, end - start);
+
+			} catch (BadLocationException x) {
+			}
+		}
+
+		return partition;
+	}
+
+	/**
+	 * @see IPresentationRepairer#setDocument(IDocument)
+	 */
+	public void setDocument(IDocument document) {
+		fDocument = document;
+	}
+}
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