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1
11
12 package org.eclipse.jdt.internal.ui.browsing;
13
14 import org.eclipse.core.runtime.Assert;
15
16 import org.eclipse.core.resources.IResource;
17
18 import org.eclipse.swt.graphics.Image;
19
20 import org.eclipse.jface.resource.ImageDescriptor;
21
22 import org.eclipse.jdt.core.IPackageFragment;
23 import org.eclipse.jdt.core.JavaModelException;
24
25 import org.eclipse.jdt.ui.JavaElementLabels;
26
27 import org.eclipse.jdt.internal.ui.JavaPlugin;
28 import org.eclipse.jdt.internal.ui.JavaPluginImages;
29 import org.eclipse.jdt.internal.ui.viewsupport.AppearanceAwareLabelProvider;
30 import org.eclipse.jdt.internal.ui.viewsupport.ColoredString;
31 import org.eclipse.jdt.internal.ui.viewsupport.ImageDescriptorRegistry;
32 import org.eclipse.jdt.internal.ui.viewsupport.JavaElementImageProvider;
33 import org.eclipse.jdt.internal.ui.viewsupport.TreeHierarchyLayoutProblemsDecorator;
34
35
38 class PackagesViewLabelProvider extends AppearanceAwareLabelProvider {
39
40 static final int HIERARCHICAL_VIEW_STATE= 0;
41 static final int FLAT_VIEW_STATE= 1;
42
43 private int fViewState;
44
45 private ImageDescriptorRegistry fRegistry;
46 private TreeHierarchyLayoutProblemsDecorator fDecorator;
47
48 PackagesViewLabelProvider(int state) {
49 this(state, AppearanceAwareLabelProvider.DEFAULT_TEXTFLAGS | JavaElementLabels.P_COMPRESSED, AppearanceAwareLabelProvider.DEFAULT_IMAGEFLAGS | JavaElementImageProvider.SMALL_ICONS);
50 }
51
52 PackagesViewLabelProvider(int state, long textFlags, int imageFlags) {
53 super(textFlags, imageFlags);
54
55 Assert.isTrue(isValidState(state));
56 fViewState= state;
57 fRegistry= JavaPlugin.getImageDescriptorRegistry();
58
59 fDecorator= new TreeHierarchyLayoutProblemsDecorator(isFlatView());
60 addLabelDecorator(fDecorator);
61 }
62
63 private boolean isValidState(int state) {
64 return state == FLAT_VIEW_STATE || state == HIERARCHICAL_VIEW_STATE;
65 }
66
67
70 public Image getImage(Object  element) {
71 if (element instanceof LogicalPackage) {
72 LogicalPackage cp= (LogicalPackage) element;
73 return getLogicalPackageImage(cp);
74 }
75 return super.getImage(element);
76 }
77
78
81 private Image getLogicalPackageImage(LogicalPackage cp) {
82 IPackageFragment[] fragments= cp.getFragments();
83 for (int i= 0; i < fragments.length; i++) {
84 IPackageFragment fragment= fragments[i];
85 if(!isEmpty(fragment)) {
86 return decorateCompoundElement(JavaPluginImages.DESC_OBJS_LOGICAL_PACKAGE, cp);
87 }
88 }
89 return decorateCompoundElement(JavaPluginImages.DESC_OBJS_EMPTY_LOGICAL_PACKAGE, cp);
90 }
91
92
93 private Image decorateCompoundElement(ImageDescriptor imageDescriptor, LogicalPackage cp) {
94 Image image= fRegistry.get(imageDescriptor);
95 return decorateImage(image, cp);
96 }
97
98 private boolean isEmpty(IPackageFragment fragment) {
99 try {
100 return (fragment.getCompilationUnits().length == 0) && (fragment.getClassFiles().length == 0);
101 } catch (JavaModelException e) {
102 }
104 return false;
105 }
106
107
110 public String getText(Object element) {
111 if (element instanceof IPackageFragment)
112 return getText((IPackageFragment)element);
113 else if (element instanceof LogicalPackage)
114 return getText((LogicalPackage)element);
115 else
116 return super.getText(element);
117 }
118
119
122 public ColoredString getRichTextLabel(Object element) {
123 if (element instanceof IPackageFragment || element instanceof LogicalPackage)
124 return new ColoredString(getText(element));
125 return super.getRichTextLabel(element);
126 }
127
128
129 private String getText(IPackageFragment fragment) {
130 if (isFlatView())
131 return getFlatText(fragment);
132 else
133 return getHierarchicalText(fragment);
134 }
135
136 private String getText(LogicalPackage logicalPackage) {
137 IPackageFragment[] fragments= logicalPackage.getFragments();
138 return getText(fragments[0]);
139 }
140
141 private String getFlatText(IPackageFragment fragment) {
142 return super.getText(fragment);
143 }
144
145 private boolean isFlatView() {
146 return fViewState==FLAT_VIEW_STATE;
147 }
148
149 private String getHierarchicalText(IPackageFragment fragment) {
150 if (fragment.isDefaultPackage()) {
151 return super.getText(fragment);
152 }
153 IResource res= fragment.getResource();
154 if(res != null && !(res.getType() == IResource.FILE))
155 return decorateText(res.getName(), fragment);
156 else
157 return decorateText(calculateName(fragment), fragment);
158 }
159
160 private String calculateName(IPackageFragment fragment) {
161
162 String name= fragment.getElementName();
163 if (name.indexOf(".") != -1) name= name.substring(name.lastIndexOf(".") + 1); return name;
166
167 }
168 }
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