/*******************************************************************************
* Copyright (c) 2000, 2007 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
* QNX Software System
* Anton Leherbauer (Wind River Systems)
*******************************************************************************/
package org.eclipse.cdt.internal.ui.text;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.ITextDoubleClickStrategy;
import org.eclipse.jface.text.ITextViewer;
/**
* Double click strategy aware of C identifier syntax rules.
*/
public class CDoubleClickSelector implements ITextDoubleClickStrategy {
protected static char[] fgBrackets= {'{', '}', '(', ')', '[', ']', '<', '>'};
private CPairMatcher fPairMatcher= new CPairMatcher(fgBrackets);
public CDoubleClickSelector() {
super();
}
/*
* @see org.eclipse.jface.text.ITextDoubleClickStrategy#doubleClicked(org.eclipse.jface.text.ITextViewer)
*/
public void doubleClicked(ITextViewer textViewer) {
int offset= textViewer.getSelectedRange().x;
if (offset < 0)
return;
IDocument document= textViewer.getDocument();
IRegion region= fPairMatcher.match(document, offset);
if (region != null && region.getLength() >= 2) {
textViewer.setSelectedRange(region.getOffset() + 1, region.getLength() - 2);
} else {
region= selectWord(document, offset);
if (region != null && region.getLength() > 0) {
textViewer.setSelectedRange(region.getOffset(), region.getLength());
}
}
}
protected IRegion selectWord(IDocument document, int offset) {
return CWordFinder.findWord(document, offset);
}
}