PDELabelUtility


1   /*******************************************************************************
2    * Copyright (c) 2006, 2007 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  
12  package org.eclipse.pde.internal.ui.util;
13  
14  import org.eclipse.swt.widgets.Control;
15  import org.eclipse.swt.widgets.Label;
16  
17  /**
18   * PDELabelUtility
19   *
20   */
21  public class PDELabelUtility {
22  
23      /**
24       * Get the field label text from the label widget created before the
25       * control (assumption).  Use this method when the control's label is
26       * variable or if the label's text is set elsewhere.  Note:  Hyperlink 
27       * label text will not be detected.
28       * @param control
29       * @return
30       */
31      public static String   getFieldLabel(Control control) {
32          // Note:  Does not handle hyperlink labels
33          
34          // Get the children of the control's parent
35          // The control itself should be in there
36          // Assuming the control's label is in there as well
37          Control[] controls = control.getParent().getChildren();
38          // Ensure has controls
39          if (controls.length == 0) {
40              return null;
41          }
42          // Me = control
43          // Track the index of myself 
44          int myIndex = -1;
45          // Linearly search controls for myself
46          for (int i = 0; i < controls.length; i++) {
47              if (controls[i] == control) {
48                  // Found myself
49                  myIndex = i;
50                  break;
51              }
52          }
53          // Ensure I was found and am not the first widget
54          if (myIndex <= 0) {
55              return null;
56          }
57          // Assume label is the control created before me
58          int labelIndex = myIndex - 1;
59          // Ensure the label index points to a label
60          if ((controls[labelIndex] instanceof Label) == false) {
61              return null;
62          }
63          // Get the label text
64          String   labelText = ((Label)controls[labelIndex]).getText(); 
65          // Get rid of the trailing colon (if any)
66          int colonIndex = labelText.indexOf(':');
67          if (colonIndex >= 0) {
68              labelText = labelText.replaceAll(":", ""); //$NON-NLS-1$ //$NON-NLS-2$
69          }
70          // Get rid of mnemonics (if any)
71          int ampIndex = labelText.indexOf('&');
72          if (ampIndex >= 0) {
73              labelText = labelText.replaceAll("&", ""); //$NON-NLS-1$ //$NON-NLS-2$
74          }
75          
76          return labelText;
77      }
78      
79      /**
80       * @param qualification
81       * @param message
82       * @return
83       */
84      public static String   qualifyMessage(String   qualification, String   message) {
85          StringBuffer   buffer = new StringBuffer  ();
86          buffer.append(qualification);
87          buffer.append(':');
88          buffer.append(' ');
89          buffer.append(message);
90          return buffer.toString();
91      }   
92      
93  }
94
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