eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/model/TextHelper.java

   1 /**
   2 * Copyright (C) 2007 EDIT
   3 * European Distributed Institute of Taxonomy
   4 * http://www.e-taxonomy.eu
   5 *
   6 * The contents of this file are subject to the Mozilla Public License Version 1.1
   7 * See LICENSE.TXT at the top of this package for the full license terms.
   8 */
   9
  10 package eu.etaxonomy.taxeditor.model;
  11
  12 import org.eclipse.swt.graphics.GC;
  13 import org.eclipse.swt.widgets.Control;
  14
  15 /**
  16  * <p>TextHelper class.</p>
  17  *
  18  * @author n.hoffmann
  19  * @created Mar 30, 2010
  20  * @version 1.0
  21  */
  22 public class TextHelper {
  23
  24         /** Constant <code>ELLIPSIS="..."</code> */
  25         public static final String ELLIPSIS = "...";
  26
  27         /**
  28          * <p>shortenText</p>
  29          *
  30          * @param textValue a {@link java.lang.String} object.
  31          * @param control a {@link org.eclipse.swt.widgets.Control} object.
  32          * @see org.eclipse.jface.dialogs.Dialog#shortenText(String, Control)
  33          * @return a {@link java.lang.String} object.
  34          */
  35         public static String shortenText(String textValue, Control control) {
  36                 if (textValue == null) {
  37                         return null;
  38                 }
  39                 GC gc = new GC(control);
  40                 int maxWidth = control.getBounds().width;
  41                 int maxExtent = gc.textExtent(textValue).x;
  42                 if (maxExtent < maxWidth) {
  43                         gc.dispose();
  44                         return textValue;
  45                 }
  46                 int length = textValue.length();
  47                 int charsToClip = Math.round(0.95f*length * (1 - ((float)maxWidth/maxExtent)));
  48
  49                 int end = length - charsToClip;
  50                 while (end > 0) {
  51                         String s1 = textValue.substring(0, end);
  52                         String s = s1 + ELLIPSIS;
  53                         int l = gc.textExtent(s).x;
  54                         if (l < maxWidth) {
  55                                 gc.dispose();
  56                                 return s;
  57                         }
  58                         end--;
  59                 }
  60                 gc.dispose();
  61                 return textValue;
  62
  63         }
  64
  65         public static String deproxyClassName(Class clazz){
  66                 String name = clazz.getSimpleName();
  67                 if (name.indexOf("_$$")>-1){
  68                         return name.substring(0, name.indexOf("_$$"));
  69                 }else{
  70                         return name;
  71                 }
  72         }
  73 }