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 package eu.etaxonomy.taxeditor.model;
  10
  11 import org.eclipse.swt.graphics.GC;
  12 import org.eclipse.swt.widgets.Control;
  13
  14 /**
  15  * @author n.hoffmann
  16  * @created Mar 30, 2010
  17  */
  18 public class TextHelper {
  19
  20         /** Constant <code>ELLIPSIS="..."</code> */
  21         public static final String ELLIPSIS = "...";
  22
  23         /**
  24          * <p>shortenText</p>
  25          *
  26          * @param textValue a {@link java.lang.String} object.
  27          * @param control a {@link org.eclipse.swt.widgets.Control} object.
  28          * @see org.eclipse.jface.dialogs.Dialog#shortenText(String, Control)
  29          * @return a {@link java.lang.String} object.
  30          */
  31         public static String shortenText(String textValue, Control control) {
  32                 if (textValue == null) {
  33                         return null;
  34                 }
  35                 GC gc = new GC(control);
  36                 int maxWidth = control.getBounds().width;
  37                 int maxExtent = gc.textExtent(textValue).x;
  38                 if (maxExtent < maxWidth) {
  39                         gc.dispose();
  40                         return textValue;
  41                 }
  42                 int length = textValue.length();
  43                 int charsToClip = Math.round(0.95f*length * (1 - ((float)maxWidth/maxExtent)));
  44
  45                 int end = length - charsToClip;
  46                 while (end > 0) {
  47                         String s1 = textValue.substring(0, end);
  48                         String s = s1 + ELLIPSIS;
  49                         int l = gc.textExtent(s).x;
  50                         if (l < maxWidth) {
  51                                 gc.dispose();
  52                                 return s;
  53                         }
  54                         end--;
  55                 }
  56                 gc.dispose();
  57                 return textValue;
  58
  59         }
  60
  61         public static String deproxyClassName(Class clazz){
  62                 String name = clazz.getSimpleName();
  63                 if (name.indexOf("_$$")>-1){
  64                         return name.substring(0, name.indexOf("_$$"));
  65                 }else{
  66                         return name;
  67                 }
  68         }
  69 }