eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/editor/definedterm/TermLabelProvider.java

   1 // $Id$
   2 /**
   3  * Copyright (C) 2009 EDIT
   4  * European Distributed Institute of Taxonomy
   5  * http://www.e-taxonomy.eu
   6  *
   7  * The contents of this file are subject to the Mozilla Public License Version 1.1
   8  * See LICENSE.TXT at the top of this package for the full license terms.
   9  */
  10 package eu.etaxonomy.taxeditor.editor.definedterm;
  11
  12 import org.apache.commons.lang.StringUtils;
  13 import org.eclipse.jface.viewers.StyledCellLabelProvider;
  14 import org.eclipse.jface.viewers.StyledString;
  15 import org.eclipse.jface.viewers.StyledString.Styler;
  16 import org.eclipse.jface.viewers.ViewerCell;
  17 import org.eclipse.swt.SWT;
  18 import org.eclipse.swt.custom.StyleRange;
  19 import org.eclipse.swt.graphics.Color;
  20 import org.eclipse.swt.graphics.TextStyle;
  21 import org.eclipse.swt.widgets.Display;
  22
  23 import eu.etaxonomy.cdm.model.common.DefinedTermBase;
  24 import eu.etaxonomy.cdm.model.common.TermBase;
  25 import eu.etaxonomy.cdm.model.common.TermVocabulary;
  26
  27 /**
  28  * @author l.morris
  29  * @date 9 Dec 2011
  30  *
  31  */
  32 public class TermLabelProvider extends StyledCellLabelProvider {
  33
  34     private static Color vocColor = Display.getCurrent().getSystemColor(SWT.COLOR_BLUE);
  35     private Styler vocStyler;
  36
  37     public TermLabelProvider() {
  38     }
  39
  40     public TermLabelProvider(Styler vocStyler){
  41         this.vocStyler = vocStyler;
  42     }
  43
  44     /*
  45      * (non-Javadoc)
  46      *
  47      * @see
  48      * org.eclipse.jface.viewers.StyledCellLabelProvider#update(org.eclipse.
  49      * jface.viewers.ViewerCell)
  50      */
  51     @Override
  52     public void update(ViewerCell cell) {
  53         Object element = cell.getElement();
  54         int columnIndex = cell.getColumnIndex();
  55
  56         String text = getText(element);
  57         cell.setText(text);
  58
  59         if (element instanceof TermVocabulary) {
  60             StyledString styledString = new StyledString(text, getVocabularyStyler());
  61             StyleRange[] styleRanges;
  62             styleRanges = styledString.getStyleRanges();
  63             cell.setStyleRanges(styleRanges);
  64         }
  65         super.update(cell);
  66     }
  67
  68     public StyledString getStyledText(Object element) {
  69
  70         if (element instanceof TermVocabulary) {
  71             new StyledString(getText(element), getVocabularyStyler());
  72         }
  73         return new StyledString(getText(element), StyledString.QUALIFIER_STYLER);
  74     }
  75
  76     /*
  77      * (non-Javadoc)
  78      *
  79      * @see org.eclipse.jface.viewers.LabelProvider#getText(java.lang.Object)
  80      */
  81
  82     public String getText(Object element) {
  83
  84         if (element instanceof DefinedTermBase) {
  85             DefinedTermBase<?> dtb = (DefinedTermBase<?>) element;
  86             if (StringUtils.isNotBlank(dtb.getIdInVocabulary())) {
  87                 return dtb.getIdInVocabulary() + " : " + dtb.getTitleCache();
  88             } else {
  89                 return dtb.getTitleCache();
  90             }
  91         } else if (element instanceof TermBase) {
  92             return ((TermBase) element).getTitleCache();
  93         }
  94
  95         // FIXME : must throw an exception here
  96         return element.toString();
  97     }
  98
  99     private Styler getVocabularyStyler() {
 100         if (vocStyler == null) {
 101             vocStyler = new Styler() {
 102                 @Override
 103                 public void applyStyles(TextStyle textStyle) {
 104                     textStyle.foreground = vocColor;
 105                 }
 106             };
 107         }
 108         return vocStyler;
 109     }
 110
 111 }