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1
11
12 package org.eclipse.jdt.internal.ui.text.java.hover;
13
14 import java.util.Iterator  ;
15
16 import org.eclipse.core.runtime.CoreException;
17 import org.eclipse.core.runtime.IPath;
18
19 import org.eclipse.core.filebuffers.FileBuffers;
20 import org.eclipse.core.filebuffers.ITextFileBufferManager;
21 import org.eclipse.core.filebuffers.LocationKind;
22
23 import org.eclipse.jface.internal.text.html.HTMLPrinter;
24 import org.eclipse.jface.preference.IPreferenceStore;
25
26 import org.eclipse.jface.text.IRegion;
27 import org.eclipse.jface.text.ITextViewer;
28 import org.eclipse.jface.text.Position;
29 import org.eclipse.jface.text.source.Annotation;
30 import org.eclipse.jface.text.source.IAnnotationModel;
31 import org.eclipse.jface.text.source.ISourceViewer;
32
33 import org.eclipse.ui.editors.text.EditorsUI;
34
35 import org.eclipse.ui.IEditorInput;
36 import org.eclipse.ui.IStorageEditorInput;
37 import org.eclipse.ui.texteditor.AnnotationPreference;
38 import org.eclipse.ui.texteditor.DefaultMarkerAnnotationAccess;
39
40 import org.eclipse.jdt.internal.ui.JavaPlugin;
41 import org.eclipse.jdt.internal.ui.javaeditor.JavaAnnotationIterator;
42
43
44
49 public abstract class AbstractAnnotationHover extends AbstractJavaEditorTextHover {
50
51 private IPreferenceStore fStore= JavaPlugin.getDefault().getCombinedPreferenceStore();
52 private DefaultMarkerAnnotationAccess fAnnotationAccess= new DefaultMarkerAnnotationAccess();
53 private boolean fAllAnnotations;
54
55
56 public AbstractAnnotationHover(boolean allAnnotations) {
57 fAllAnnotations= allAnnotations;
58 }
59
60
63 private String formatMessage(String message) {
64 StringBuffer buffer= new StringBuffer ();
65 HTMLPrinter.insertPageProlog(buffer, 0, getStyleSheet());
66 buffer.append(HTMLPrinter.convertToHTMLContent(message));
67 HTMLPrinter.addPageEpilog(buffer);
68 return buffer.toString();
69 }
70
71
74 public String getHoverInfo(ITextViewer textViewer, IRegion hoverRegion) {
75 IPath path;
76 IAnnotationModel model;
77 if (textViewer instanceof ISourceViewer) {
78 path= null;
79 model= ((ISourceViewer)textViewer).getAnnotationModel();
80 } else {
81 path= getEditorInputPath();
83 model= getAnnotationModel(path);
84 }
85 if (model == null)
86 return null;
87
88 try {
89 Iterator e= new JavaAnnotationIterator(model, true, fAllAnnotations);
90 int layer= -1;
91 String message= null;
92 while (e.hasNext()) {
93 Annotation a= (Annotation) e.next();
94
95 AnnotationPreference preference= getAnnotationPreference(a);
96 if (preference == null || !(preference.getTextPreferenceKey() != null && fStore.getBoolean(preference.getTextPreferenceKey()) || (preference.getHighlightPreferenceKey() != null && fStore.getBoolean(preference.getHighlightPreferenceKey()))))
97 continue;
98
99 Position p= model.getPosition(a);
100
101 int l= fAnnotationAccess.getLayer(a);
102
103 if (l > layer && p != null && p.overlapsWith(hoverRegion.getOffset(), hoverRegion.getLength())) {
104 String msg= a.getText();
105 if (msg != null && msg.trim().length() > 0) {
106 message= msg;
107 layer= l;
108 }
109 }
110 }
111 if (layer > -1)
112 return formatMessage(message);
113
114 } finally {
115 try {
116 if (path != null) {
117 ITextFileBufferManager manager= FileBuffers.getTextFileBufferManager();
118 manager.disconnect(path, LocationKind.NORMALIZE, null);
119 }
120 } catch (CoreException ex) {
121 JavaPlugin.log(ex.getStatus());
122 }
123 }
124
125 return null;
126 }
127
128 private IPath getEditorInputPath() {
129 if (getEditor() == null)
130 return null;
131
132 IEditorInput input= getEditor().getEditorInput();
133 if (input instanceof IStorageEditorInput) {
134 try {
135 return ((IStorageEditorInput)input).getStorage().getFullPath();
136 } catch (CoreException ex) {
137 JavaPlugin.log(ex.getStatus());
138 }
139 }
140 return null;
141 }
142
143 private IAnnotationModel getAnnotationModel(IPath path) {
144 if (path == null)
145 return null;
146
147 ITextFileBufferManager manager= FileBuffers.getTextFileBufferManager();
148 try {
149 manager.connect(path, LocationKind.NORMALIZE, null);
150 } catch (CoreException ex) {
151 JavaPlugin.log(ex.getStatus());
152 return null;
153 }
154
155 IAnnotationModel model= null;
156 try {
157 model= manager.getTextFileBuffer(path, LocationKind.NORMALIZE).getAnnotationModel();
158 return model;
159 } finally {
160 if (model == null) {
161 try {
162 manager.disconnect(path, LocationKind.NORMALIZE, null);
163 } catch (CoreException ex) {
164 JavaPlugin.log(ex.getStatus());
165 }
166 }
167 }
168 }
169
170
176 private AnnotationPreference getAnnotationPreference(Annotation annotation) {
177
178 if (annotation.isMarkedDeleted())
179 return null;
180 return EditorsUI.getAnnotationPreferenceLookup().getAnnotationPreference(annotation);
181 }
182 }
183 |
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