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1
11 package org.eclipse.jdt.internal.ui.packageview;
12
13 import java.util.HashMap  ;
14 import java.util.Iterator ;
15 import java.util.Map ;
16
17 import org.eclipse.core.runtime.Assert;
18 import org.eclipse.core.runtime.IPath;
19
20 import org.eclipse.core.resources.IFolder;
21
22 import org.eclipse.swt.graphics.Image;
23
24 import org.eclipse.jface.resource.ImageDescriptor;
25
26 import org.eclipse.ui.IWorkingSet;
27
28 import org.eclipse.jdt.core.IPackageFragment;
29
30 import org.eclipse.jdt.ui.JavaElementLabels;
31
32 import org.eclipse.jdt.internal.ui.viewsupport.AppearanceAwareLabelProvider;
33 import org.eclipse.jdt.internal.ui.viewsupport.ColoredString;
34 import org.eclipse.jdt.internal.ui.viewsupport.JavaElementImageProvider;
35
36
44 public class PackageExplorerLabelProvider extends AppearanceAwareLabelProvider {
45
46 private PackageExplorerContentProvider fContentProvider;
47 private Map fWorkingSetImages;
48
49 private boolean fIsFlatLayout;
50 private PackageExplorerProblemsDecorator fProblemDecorator;
51
52 public PackageExplorerLabelProvider(PackageExplorerContentProvider cp) {
53 super(DEFAULT_TEXTFLAGS | JavaElementLabels.P_COMPRESSED | JavaElementLabels.ALL_CATEGORY, DEFAULT_IMAGEFLAGS | JavaElementImageProvider.SMALL_ICONS);
54
55 fProblemDecorator= new PackageExplorerProblemsDecorator();
56 addLabelDecorator(fProblemDecorator);
57 Assert.isNotNull(cp);
58 fContentProvider= cp;
59 fWorkingSetImages= null;
60 }
61
62
65 public ColoredString getRichTextLabel(Object element) {
66 String text= getSpecificText(element);
67 if (text != null) {
68 return new ColoredString(decorateText(text, element));
69 }
70 return super.getRichTextLabel(element);
71 }
72
73 private String getSpecificText(Object element) {
74 if (!fIsFlatLayout && element instanceof IPackageFragment) {
75 IPackageFragment fragment = (IPackageFragment) element;
76 Object parent= fContentProvider.getHierarchicalPackageParent(fragment);
77 if (parent instanceof IPackageFragment) {
78 return getNameDelta((IPackageFragment) parent, fragment);
79 } else if (parent instanceof IFolder) { return getNameDelta((IFolder) parent, fragment);
81 }
82 } else if (element instanceof IWorkingSet) {
83 return ((IWorkingSet) element).getLabel();
84 }
85 return null;
86 }
87
88 public String getText(Object element) {
89 String text= getSpecificText(element);
90 if (text != null) {
91 return decorateText(text, element);
92 }
93 return super.getText(element);
94 }
95
96 private String getNameDelta(IPackageFragment parent, IPackageFragment fragment) {
97 String prefix= parent.getElementName() + '.';
98 String fullName= fragment.getElementName();
99 if (fullName.startsWith(prefix)) {
100 return fullName.substring(prefix.length());
101 }
102 return fullName;
103 }
104
105 private String getNameDelta(IFolder parent, IPackageFragment fragment) {
106 IPath prefix= parent.getFullPath();
107 IPath fullPath= fragment.getPath();
108 if (prefix.isPrefixOf(fullPath)) {
109 StringBuffer buf= new StringBuffer ();
110 for (int i= prefix.segmentCount(); i < fullPath.segmentCount(); i++) {
111 if (buf.length() > 0)
112 buf.append('.');
113 buf.append(fullPath.segment(i));
114 }
115 return buf.toString();
116 }
117 return fragment.getElementName();
118 }
119
120 public Image getImage(Object element) {
121 if (element instanceof IWorkingSet) {
122 ImageDescriptor image= ((IWorkingSet)element).getImageDescriptor();
123 if (fWorkingSetImages == null) {
124 fWorkingSetImages= new HashMap ();
125 }
126
127 Image result= (Image) fWorkingSetImages.get(image);
128 if (result == null) {
129 result= image.createImage();
130 fWorkingSetImages.put(image, result);
131 }
132 return decorateImage(result, element);
133 }
134 return super.getImage(element);
135 }
136
137 public void setIsFlatLayout(boolean state) {
138 fIsFlatLayout= state;
139 fProblemDecorator.setIsFlatLayout(state);
140 }
141
142 public void dispose() {
143 if (fWorkingSetImages != null) {
144 for (Iterator iter= fWorkingSetImages.values().iterator(); iter.hasNext();) {
145 ((Image)iter.next()).dispose();
146 }
147 }
148 super.dispose();
149 }
150 }
151 |
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