1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 

    17 

    18 package com.symbian.smt.gui.editors.xmleditor;

    19 

    20 import org.eclipse.jface.text.BadLocationException;

    21 import org.eclipse.jface.text.IDocument;

    22 import org.eclipse.jface.text.ITextDoubleClickStrategy;

    23 import org.eclipse.jface.text.ITextViewer;

    24 

    25 /**

    26  * @author barbararosi-schwartz

    27  * 

    28  */

    29 public class XMLDoubleClickStrategy implements ITextDoubleClickStrategy {

    30 	protected ITextViewer fText;

    31 

    32 	public void doubleClicked(ITextViewer part) {

    33 		int pos = part.getSelectedRange().x;

    34 

    35 		if (pos < 0)

    36 			return;

    37 

    38 		fText = part;

    39 

    40 		if (!selectComment(pos)) {

    41 			selectWord(pos);

    42 		}

    43 	}

    44 

    45 	protected boolean selectComment(int caretPos) {

    46 		IDocument doc = fText.getDocument();

    47 		int startPos, endPos;

    48 

    49 		try {

    50 			int pos = caretPos;

    51 			char c = ' ';

    52 

    53 			while (pos >= 0) {

    54 				c = doc.getChar(pos);

    55 				if (c == '\\') {

    56 					pos -= 2;

    57 					continue;

    58 				}

    59 				if (c == Character.LINE_SEPARATOR || c == '\"')

    60 					break;

    61 				--pos;

    62 			}

    63 

    64 			if (c != '\"')

    65 				return false;

    66 

    67 			startPos = pos;

    68 

    69 			pos = caretPos;

    70 			int length = doc.getLength();

    71 			c = ' ';

    72 

    73 			while (pos < length) {

    74 				c = doc.getChar(pos);

    75 				if (c == Character.LINE_SEPARATOR || c == '\"')

    76 					break;

    77 				++pos;

    78 			}

    79 			if (c != '\"')

    80 				return false;

    81 

    82 			endPos = pos;

    83 

    84 			int offset = startPos + 1;

    85 			int len = endPos - offset;

    86 			fText.setSelectedRange(offset, len);

    87 			return true;

    88 		} catch (BadLocationException x) {

    89 		}

    90 

    91 		return false;

    92 	}

    93 

    94 	private void selectRange(int startPos, int stopPos) {

    95 		int offset = startPos + 1;

    96 		int length = stopPos - offset;

    97 		fText.setSelectedRange(offset, length);

    98 	}

    99 

   100 	protected boolean selectWord(int caretPos) {

   101 

   102 		IDocument doc = fText.getDocument();

   103 		int startPos, endPos;

   104 

   105 		try {

   106 

   107 			int pos = caretPos;

   108 			char c;

   109 

   110 			while (pos >= 0) {

   111 				c = doc.getChar(pos);

   112 				if (!Character.isJavaIdentifierPart(c))

   113 					break;

   114 				--pos;

   115 			}

   116 

   117 			startPos = pos;

   118 

   119 			pos = caretPos;

   120 			int length = doc.getLength();

   121 

   122 			while (pos < length) {

   123 				c = doc.getChar(pos);

   124 				if (!Character.isJavaIdentifierPart(c))

   125 					break;

   126 				++pos;

   127 			}

   128 

   129 			endPos = pos;

   130 			selectRange(startPos, endPos);

   131 			return true;

   132 

   133 		} catch (BadLocationException x) {

   134 		}

   135 

   136 		return false;

   137 	}

   138 }