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1
11 package org.eclipse.jdt.internal.ui.typehierarchy;
12
13 import org.eclipse.swt.graphics.Color;
14
15 import org.eclipse.jface.resource.JFaceResources;
16 import org.eclipse.jface.util.IPropertyChangeListener;
17 import org.eclipse.jface.util.PropertyChangeEvent;
18 import org.eclipse.jface.viewers.LabelProviderChangedEvent;
19
20 import org.eclipse.jdt.core.IJavaElement;
21 import org.eclipse.jdt.core.IMember;
22 import org.eclipse.jdt.core.IMethod;
23 import org.eclipse.jdt.core.IType;
24 import org.eclipse.jdt.core.ITypeHierarchy;
25 import org.eclipse.jdt.core.JavaModelException;
26
27 import org.eclipse.jdt.internal.corext.util.MethodOverrideTester;
28
29 import org.eclipse.jdt.ui.JavaElementLabels;
30
31 import org.eclipse.jdt.internal.ui.viewsupport.AppearanceAwareLabelProvider;
32 import org.eclipse.jdt.internal.ui.viewsupport.ColoredString;
33 import org.eclipse.jdt.internal.ui.viewsupport.ColoredViewersManager;
34
35
38 public class MethodsLabelProvider extends AppearanceAwareLabelProvider {
39
40 private boolean fShowDefiningType;
41 private TypeHierarchyLifeCycle fHierarchy;
42 private MethodsViewer fMethodsViewer;
43 private IPropertyChangeListener fColorRegistryListener;
44
45 public MethodsLabelProvider(TypeHierarchyLifeCycle lifeCycle, MethodsViewer methodsViewer) {
46 super(DEFAULT_TEXTFLAGS, DEFAULT_IMAGEFLAGS);
47 fHierarchy= lifeCycle;
48 fShowDefiningType= false;
49 fMethodsViewer= methodsViewer;
50 fColorRegistryListener= new IPropertyChangeListener() {
51 public void propertyChange(PropertyChangeEvent event) {
52 if (event.getProperty().equals(ColoredViewersManager.INHERITED_COLOR_NAME)) {
53 fireLabelProviderChanged(new LabelProviderChangedEvent(MethodsLabelProvider.this, null));
54 }
55 }
56 };
57 JFaceResources.getColorRegistry().addListener(fColorRegistryListener);
58 }
59
60 public void setShowDefiningType(boolean showDefiningType) {
61 fShowDefiningType= showDefiningType;
62 }
63
64 public boolean isShowDefiningType() {
65 return fShowDefiningType;
66 }
67
68
69 private IType getDefiningType(Object  element) throws JavaModelException {
70 int kind= ((IJavaElement) element).getElementType();
71
72 if (kind != IJavaElement.METHOD && kind != IJavaElement.FIELD && kind != IJavaElement.INITIALIZER) {
73 return null;
74 }
75 IType declaringType= ((IMember) element).getDeclaringType();
76 if (kind != IJavaElement.METHOD) {
77 return declaringType;
78 }
79 ITypeHierarchy hierarchy= fHierarchy.getHierarchy();
80 if (hierarchy == null) {
81 return declaringType;
82 }
83 IMethod method= (IMethod) element;
84 MethodOverrideTester tester= new MethodOverrideTester(declaringType, hierarchy);
85 IMethod res= tester.findDeclaringMethod(method, true);
86 if (res == null || method.equals(res)) {
87 return declaringType;
88 }
89 return res.getDeclaringType();
90 }
91
92
95 public String getText(Object element) {
96 String text= super.getText(element);
97 String qualifier= getQualifier(element);
98 if (qualifier != null) {
99 return qualifier + text;
100 }
101 return text;
102 }
103
104
107 public ColoredString getRichTextLabel(Object element) {
108 ColoredString text= super.getRichTextLabel(element);
109 String qualifier= getQualifier(element);
110 if (qualifier != null) {
111 return new ColoredString(qualifier).append(text);
112 }
113 return text;
114
115 }
116
117 private String getQualifier(Object element) {
118 if (fShowDefiningType) {
119 try {
120 IType type= getDefiningType(element);
121 if (type != null) {
122 return super.getText(type) + JavaElementLabels.CONCAT_STRING;
123 }
124 } catch (JavaModelException e) {
125 }
126 }
127 return null;
128 }
129
130
131
134 public Color getForeground(Object element) {
135 if (fMethodsViewer.isShowInheritedMethods() && element instanceof IMethod) {
136 IMethod curr= (IMethod) element;
137 IMember declaringType= curr.getDeclaringType();
138
139 if (!declaringType.equals(fMethodsViewer.getInput())) {
140 return JFaceResources.getColorRegistry().get(ColoredViewersManager.INHERITED_COLOR_NAME);
141 }
142 }
143 return null;
144 }
145
146 public void dispose() {
147 JFaceResources.getColorRegistry().removeListener(fColorRegistryListener);
148 fColorRegistryListener= null;
149 super.dispose();
150 }
151
152 }
153 |
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