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/*******************************************************************************
* Copyright (c) 2000, 2008 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.ui.examples.templateeditor.editors;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.ITextDoubleClickStrategy;
import org.eclipse.jface.text.ITextViewer;
public class XMLDoubleClickStrategy implements ITextDoubleClickStrategy {
protected ITextViewer fText;
@Override
public void doubleClicked(ITextViewer part) {
int pos = part.getSelectedRange().x;
if (pos < 0)
return;
fText = part;
if (!selectComment(pos)) {
selectWord(pos);
}
}
protected boolean selectComment(int caretPos) {
IDocument doc = fText.getDocument();
int startPos, endPos;
try {
int pos = caretPos;
char c = ' ';
while (pos >= 0) {
c = doc.getChar(pos);
if (c == '\\') {
pos -= 2;
continue;
}
if (c == Character.LINE_SEPARATOR || c == '\"')
break;
--pos;
}
if (c != '\"')
return false;
startPos = pos;
pos = caretPos;
int length = doc.getLength();
c = ' ';
while (pos < length) {
c = doc.getChar(pos);
if (c == Character.LINE_SEPARATOR || c == '\"')
break;
++pos;
}
if (c != '\"')
return false;
endPos = pos;
int offset = startPos + 1;
int len = endPos - offset;
fText.setSelectedRange(offset, len);
return true;
} catch (BadLocationException x) {
}
return false;
}
protected boolean selectWord(int caretPos) {
IDocument doc = fText.getDocument();
int startPos, endPos;
try {
int pos = caretPos;
char c;
while (pos >= 0) {
c = doc.getChar(pos);
if (!Character.isJavaIdentifierPart(c))
break;
--pos;
}
startPos = pos;
pos = caretPos;
int length = doc.getLength();
while (pos < length) {
c = doc.getChar(pos);
if (!Character.isJavaIdentifierPart(c))
break;
++pos;
}
endPos = pos;
selectRange(startPos, endPos);
return true;
} catch (BadLocationException x) {
}
return false;
}
private void selectRange(int startPos, int stopPos) {
int offset = startPos + 1;
int length = stopPos - offset;
fText.setSelectedRange(offset, length);
}
}
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