sysmodelmgr/com.symbian.smt.gui/src/com/symbian/smt/gui/editors/xmleditor/NonRuleBasedDamagerRepairer.java
--- /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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