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Java > Open Source Codes > org > eclipse > pde > internal > ui > editor > XMLDoubleClickStrategy


1 /*******************************************************************************
2  * Copyright (c) 2000, 2004 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials
4  * are made available under the terms of the Eclipse Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/epl-v10.html
7  *
8  * Contributors:
9  * IBM Corporation - initial API and implementation
10  *******************************************************************************/
11 package org.eclipse.pde.internal.ui.editor;
12
13 import org.eclipse.jface.text.*;
14
15 public class XMLDoubleClickStrategy implements ITextDoubleClickStrategy {
16     protected ITextViewer fText;
17
18     public void doubleClicked(ITextViewer part) {
19         int pos = part.getSelectedRange().x;
20         if (pos > 0) {
21             fText = part;
22             selectWord(pos);
23         }
24     }
25     
26     protected boolean selectWord(int caretPos) {
27
28         IDocument doc = fText.getDocument();
29         int startPos, endPos;
30
31         try {
32
33             int pos = caretPos;
34             char c;
35
36             while (pos >= 0) {
37                 c = doc.getChar(pos);
38                 if (!Character.isJavaIdentifierPart(c) && c != '.')
39                     break;
40                 --pos;
41             }
42
43             startPos = pos;
44
45             pos = caretPos;
46             int length = doc.getLength();
47
48             while (pos < length) {
49                 c = doc.getChar(pos);
50                 if (!Character.isJavaIdentifierPart(c) && c != '.')
51                     break;
52                 ++pos;
53             }
54
55             endPos = pos;
56             selectRange(startPos, endPos);
57             return true;
58
59         } catch (BadLocationException x) {
60         }
61
62         return false;
63     }
64     
65     private void selectRange(int startPos, int stopPos) {
66         int offset = startPos+1;
67         int length = stopPos - offset;
68         fText.setSelectedRange(offset, length);
69     }
70 }
71
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