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1
11 package org.eclipse.ltk.internal.ui.refactoring;
12
13 import java.util.HashMap  ;
14 import java.util.Iterator ;
15 import java.util.Map ;
16
17 import org.eclipse.swt.graphics.Font;
18 import org.eclipse.swt.graphics.Image;
19
20 import org.eclipse.jface.resource.ImageDescriptor;
21 import org.eclipse.jface.resource.JFaceResources;
22 import org.eclipse.jface.viewers.IFontProvider;
23 import org.eclipse.jface.viewers.LabelProvider;
24
25 class ChangeElementLabelProvider extends LabelProvider implements IFontProvider {
26
27 private Map fDescriptorImageMap= new HashMap ();
28
29 public ChangeElementLabelProvider() {
30 }
31
32 public Image getImage(Object object) {
33 return manageImageDescriptor(((PreviewNode)object).getImageDescriptor());
34 }
35
36 public String getText(Object object) {
37 String text= ((PreviewNode)object).getText();
38 if (isDerived(object)) {
39 return Messages.format(RefactoringUIMessages.ChangeElementLabelProvider_derived, text);
40 } else {
41 return text;
42 }
43 }
44
45 public Font getFont(Object element) {
46 if (isDerived(element)) {
47 return JFaceResources.getFontRegistry().getItalic(JFaceResources.DIALOG_FONT);
48 } else {
49 return null;
50 }
51 }
52
53 private boolean isDerived(Object element) {
54 PreviewNode node= (PreviewNode)element;
55 return node.hasDerived();
56 }
57
58 public void dispose() {
59 for (Iterator iter= fDescriptorImageMap.values().iterator(); iter.hasNext(); ) {
60 Image image= (Image)iter.next();
61 image.dispose();
62 }
63 super.dispose();
64 }
65
66 private Image manageImageDescriptor(ImageDescriptor descriptor) {
67 Image image= (Image)fDescriptorImageMap.get(descriptor);
68 if (image == null) {
69 image= descriptor.createImage();
70 fDescriptorImageMap.put(descriptor, image);
71 }
72 return image;
73 }
74 }
75 |
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