case-study/jdt-after/ui/org/eclipse/jdt/internal/ui/search/PostfixLabelProvider.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2011 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 package org.eclipse.jdt.internal.ui.search;
  12
  13 import org.eclipse.swt.graphics.Image;
  14
  15 import org.eclipse.jface.viewers.ITreeContentProvider;
  16 import org.eclipse.jface.viewers.StyledString;
  17 import org.eclipse.jface.viewers.TreeViewer;
  18
  19 import org.eclipse.jdt.core.IClassFile;
  20 import org.eclipse.jdt.core.ICompilationUnit;
  21 import org.eclipse.jdt.core.IJavaModel;
  22 import org.eclipse.jdt.core.IType;
  23
  24 import org.eclipse.jdt.ui.JavaElementLabels;
  25
  26 import org.eclipse.jdt.internal.ui.search.JavaSearchResultPage.DecoratorIgnoringViewerSorter;
  27 import org.eclipse.jdt.internal.ui.viewsupport.DecoratingJavaLabelProvider;
  28
  29
  30 public class PostfixLabelProvider extends SearchLabelProvider {
  31         private ITreeContentProvider fContentProvider;
  32
  33         public PostfixLabelProvider(JavaSearchResultPage page) {
  34                 super(page);
  35                 fContentProvider= new LevelTreeContentProvider.FastJavaElementProvider();
  36         }
  37
  38         @Override
  39         public Image getImage(Object element) {
  40                 Image image= super.getImage(element);
  41                 if (image != null)
  42                         return image;
  43                 return getParticipantImage(element);
  44         }
  45
  46         @Override
  47         public String getText(Object element) {
  48                 String labelWithCounts= getLabelWithCounts(element, internalGetText(element));
  49                 return labelWithCounts + getQualification(element);
  50         }
  51
  52         private String getQualification(Object element) {
  53                 StringBuffer res= new StringBuffer();
  54
  55                 ITreeContentProvider provider= (ITreeContentProvider) fPage.getViewer().getContentProvider();
  56                 Object visibleParent= provider.getParent(element);
  57                 Object realParent= fContentProvider.getParent(element);
  58                 Object lastElement= element;
  59                 while (realParent != null && !(realParent instanceof IJavaModel) && !realParent.equals(visibleParent)) {
  60                         if (!isSameInformation(realParent, lastElement))  {
  61                                 res.append(JavaElementLabels.CONCAT_STRING).append(internalGetText(realParent));
  62                         }
  63                         lastElement= realParent;
  64                         realParent= fContentProvider.getParent(realParent);
  65                 }
  66                 return res.toString();
  67         }
  68
  69         @Override
  70         protected boolean hasChildren(Object element) {
  71                 ITreeContentProvider contentProvider= (ITreeContentProvider) fPage.getViewer().getContentProvider();
  72                 return contentProvider.hasChildren(element);
  73         }
  74
  75         private String internalGetText(Object element) {
  76                 String text= super.getText(element);
  77                 if (text != null && text.length() > 0)
  78                         return text;
  79                 return getParticipantText(element);
  80         }
  81
  82         private StyledString internalGetStyledText(Object element) {
  83                 StyledString text= super.getStyledText(element);
  84                 if (text != null && text.length() > 0)
  85                         return text;
  86                 return getStyledParticipantText(element);
  87         }
  88
  89         private boolean isSameInformation(Object realParent, Object lastElement) {
  90                 if (lastElement instanceof IType) {
  91                         IType type= (IType) lastElement;
  92                         if (realParent instanceof IClassFile) {
  93                                 if (type.getClassFile().equals(realParent))
  94                                         return true;
  95                         } else if (realParent instanceof ICompilationUnit) {
  96                                 if (type.getCompilationUnit().equals(realParent))
  97                                         return true;
  98                         }
  99                 }
 100                 return false;
 101         }
 102
 103         /* (non-Javadoc)
 104          * @see org.eclipse.jdt.internal.ui.viewsupport.JavaUILabelProvider#getStyledText(java.lang.Object)
 105          */
 106         @Override
 107         public StyledString getStyledText(Object element) {
 108                 StyledString styledString= getColoredLabelWithCounts(element, internalGetStyledText(element));
 109                 styledString.append(getQualification(element), StyledString.QUALIFIER_STYLER);
 110                 return styledString;
 111         }
 112
 113         public void generated_7949163679153843673(TreeViewer viewer, JavaSearchResultPage javasearchresultpage) {
 114                 viewer.setComparator(new DecoratorIgnoringViewerSorter(this));
 115                 viewer.setLabelProvider(new DecoratingJavaLabelProvider(this, false));
 116                 javasearchresultpage.fContentProvider= new LevelTreeContentProvider(javasearchresultpage, javasearchresultpage.fCurrentGrouping);
 117                 viewer.setContentProvider(javasearchresultpage.fContentProvider);
 118         }
 119
 120 }