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1
11 package org.eclipse.jdt.internal.ui.viewsupport;
12
13 import java.util.ArrayList  ;
14
15 import org.eclipse.core.runtime.ListenerList;
16 import org.eclipse.core.runtime.SafeRunner;
17
18 import org.eclipse.core.resources.IStorage;
19
20 import org.eclipse.swt.graphics.Color;
21 import org.eclipse.swt.graphics.Image;
22
23 import org.eclipse.jface.util.SafeRunnable;
24 import org.eclipse.jface.viewers.IColorProvider;
25 import org.eclipse.jface.viewers.ILabelDecorator;
26 import org.eclipse.jface.viewers.ILabelProvider;
27 import org.eclipse.jface.viewers.ILabelProviderListener;
28 import org.eclipse.jface.viewers.LabelProviderChangedEvent;
29
30 import org.eclipse.jdt.ui.JavaElementLabels;
31
32 public class JavaUILabelProvider implements ILabelProvider, IColorProvider, IRichLabelProvider {
33
34 protected ListenerList fListeners = new ListenerList();
35
36 protected JavaElementImageProvider fImageLabelProvider;
37 protected StorageLabelProvider fStorageLabelProvider;
38
39 private ArrayList fLabelDecorators;
40
41 private int fImageFlags;
42 private long fTextFlags;
43
44
47 public JavaUILabelProvider() {
48 this(JavaElementLabels.ALL_DEFAULT, JavaElementImageProvider.OVERLAY_ICONS);
49 }
50
51
55 public JavaUILabelProvider(long textFlags, int imageFlags) {
56 fImageLabelProvider= new JavaElementImageProvider();
57 fLabelDecorators= null;
58
59 fStorageLabelProvider= new StorageLabelProvider();
60 fImageFlags= imageFlags;
61 fTextFlags= textFlags;
62 }
63
64
68 public void addLabelDecorator(ILabelDecorator decorator) {
69 if (fLabelDecorators == null) {
70 fLabelDecorators= new ArrayList (2);
71 }
72 fLabelDecorators.add(decorator);
73 }
74
75
79 public final void setTextFlags(long textFlags) {
80 fTextFlags= textFlags;
81 }
82
83
87 public final void setImageFlags(int imageFlags) {
88 fImageFlags= imageFlags;
89 }
90
91
96 public final int getImageFlags() {
97 return fImageFlags;
98 }
99
100
104 public final long getTextFlags() {
105 return fTextFlags;
106 }
107
108
114 protected int evaluateImageFlags(Object element) {
115 return getImageFlags();
116 }
117
118
123 protected long evaluateTextFlags(Object element) {
124 return getTextFlags();
125 }
126
127 protected Image decorateImage(Image image, Object element) {
128 if (fLabelDecorators != null && image != null) {
129 for (int i= 0; i < fLabelDecorators.size(); i++) {
130 ILabelDecorator decorator= (ILabelDecorator) fLabelDecorators.get(i);
131 image= decorator.decorateImage(image, element);
132 }
133 }
134 return image;
135 }
136
137
140 public Image getImage(Object element) {
141 Image result= fImageLabelProvider.getImageLabel(element, evaluateImageFlags(element));
142 if (result == null && (element instanceof IStorage)) {
143 result= fStorageLabelProvider.getImage(element);
144 }
145
146 return decorateImage(result, element);
147 }
148
149 protected String decorateText(String text, Object element) {
150 if (fLabelDecorators != null && text.length() > 0) {
151 for (int i= 0; i < fLabelDecorators.size(); i++) {
152 ILabelDecorator decorator= (ILabelDecorator) fLabelDecorators.get(i);
153 String decorated= decorator.decorateText(text, element);
154 if (decorated != null) {
155 text= decorated;
156 }
157 }
158 }
159 return text;
160 }
161
162
163
166 public String getText(Object element) {
167 String result= JavaElementLabels.getTextLabel(element, evaluateTextFlags(element));
168 if (result.length() == 0 && (element instanceof IStorage)) {
169 result= fStorageLabelProvider.getText(element);
170 }
171 return decorateText(result, element);
172 }
173
174 public ColoredString getRichTextLabel(Object element) {
175 ColoredString string= ColoredJavaElementLabels.getTextLabel(element, evaluateTextFlags(element) | ColoredJavaElementLabels.COLORIZE);
176 if (string.length() == 0 && (element instanceof IStorage)) {
177 string= new ColoredString(fStorageLabelProvider.getText(element));
178 }
179 String decorated= decorateText(string.getString(), element);
180 if (decorated != null) {
181 return ColoredJavaElementLabels.decorateColoredString(string, decorated, ColoredJavaElementLabels.DECORATIONS_STYLE);
182 }
183 return string;
184 }
185
186
189 public void dispose() {
190 if (fLabelDecorators != null) {
191 for (int i= 0; i < fLabelDecorators.size(); i++) {
192 ILabelDecorator decorator= (ILabelDecorator) fLabelDecorators.get(i);
193 decorator.dispose();
194 }
195 fLabelDecorators= null;
196 }
197 fStorageLabelProvider.dispose();
198 fImageLabelProvider.dispose();
199 }
200
201
204 public void addListener(ILabelProviderListener listener) {
205 if (fLabelDecorators != null) {
206 for (int i= 0; i < fLabelDecorators.size(); i++) {
207 ILabelDecorator decorator= (ILabelDecorator) fLabelDecorators.get(i);
208 decorator.addListener(listener);
209 }
210 }
211 fListeners.add(listener);
212 }
213
214
217 public boolean isLabelProperty(Object element, String property) {
218 return true;
219 }
220
221
224 public void removeListener(ILabelProviderListener listener) {
225 if (fLabelDecorators != null) {
226 for (int i= 0; i < fLabelDecorators.size(); i++) {
227 ILabelDecorator decorator= (ILabelDecorator) fLabelDecorators.get(i);
228 decorator.removeListener(listener);
229 }
230 }
231 fListeners.remove(listener);
232 }
233
234 public static ILabelDecorator[] getDecorators(boolean errortick, ILabelDecorator extra) {
235 if (errortick) {
236 if (extra == null) {
237 return new ILabelDecorator[] {};
238 } else {
239 return new ILabelDecorator[] { extra };
240 }
241 }
242 if (extra != null) {
243 return new ILabelDecorator[] { extra };
244 }
245 return null;
246 }
247
248
251 public Color getForeground(Object element) {
252 return null;
253 }
254
255
258 public Color getBackground(Object element) {
259 return null;
260 }
261
262
270 protected void fireLabelProviderChanged(final LabelProviderChangedEvent event) {
271 Object [] listeners = fListeners.getListeners();
272 for (int i = 0; i < listeners.length; ++i) {
273 final ILabelProviderListener l = (ILabelProviderListener) listeners[i];
274 SafeRunner.run(new SafeRunnable() {
275 public void run() {
276 l.labelProviderChanged(event);
277 }
278 });
279 }
280 }
281
282 }
283 |
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