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1
11
12 package org.eclipse.ui.internal.cheatsheets.composite.explorer;
13
14 import java.io.IOException  ;
15 import java.net.URL ;
16 import java.util.HashMap ;
17 import java.util.Iterator ;
18 import java.util.Map ;
19
20 import org.eclipse.core.runtime.FileLocator;
21 import org.eclipse.core.runtime.Path;
22 import org.eclipse.jface.resource.ImageDescriptor;
23 import org.eclipse.jface.viewers.LabelProvider;
24 import org.eclipse.swt.SWT;
25 import org.eclipse.swt.graphics.Image;
26 import org.eclipse.ui.internal.cheatsheets.CheatSheetPlugin;
27 import org.eclipse.ui.internal.cheatsheets.composite.model.TaskStateUtilities;
28 import org.eclipse.ui.internal.cheatsheets.composite.parser.ICompositeCheatsheetTags;
29 import org.eclipse.ui.internal.cheatsheets.composite.views.TaskEditorManager;
30 import org.eclipse.ui.internal.provisional.cheatsheets.ICompositeCheatSheetTask;
31 import org.eclipse.ui.internal.provisional.cheatsheets.ITaskGroup;
32 import org.osgi.framework.Bundle;
33
34 public class TreeLabelProvider extends LabelProvider {
35
36 private static int BLOCKED = -1;
37 private Image defaultImage = null;
39
42 private class ImageSet {
43 Map images = new HashMap ();
45
46 public void put(int index, Image image) {
47 images.put(Integer.toString(index), image);
48 }
49
50 public Image getImage(int index) {
51 return (Image)images.get(Integer.toString(index));
52 }
53
54 void dispose() {
55 for (Iterator iter = images.values().iterator(); iter.hasNext(); ) {
56 Image nextImage = (Image)iter.next();
57 nextImage.dispose();
58 }
59 }
60 }
61
62 private Map imageMap = null;
64 public TreeLabelProvider() {
65 imageMap = new HashMap ();
66 }
67
68 public String getText(Object obj) {
69 String result;
70 if (obj instanceof ICompositeCheatSheetTask) {
71 result = ((ICompositeCheatSheetTask) obj).getName();
72 } else {
73 result = obj.toString();
74 }
75 if (result == null) {
76 result = ""; }
78 return result;
79 }
80
81 public Image getImage(Object obj) {
82 if (obj instanceof ICompositeCheatSheetTask) {
83 ICompositeCheatSheetTask task = (ICompositeCheatSheetTask) obj;
84 return lookupImage(task.getKind(), task.getState(), TaskStateUtilities.isBlocked(task));
85 }
86 return super.getImage(obj);
87 }
88
89 public Image lookupImage(String kind, int state, boolean isBlocked) {
90 ImageSet images = (ImageSet) imageMap.get(kind);
91 if (images == null) {
92 images = createImages(kind);
93 imageMap.put(kind, images);
94 }
95 if (isBlocked) {
96 return images.getImage(BLOCKED);
97 }
98 return images.getImage(state);
99 }
100
101
106 private ImageSet createImages(String kind) {
107 ImageSet images = new ImageSet();
108 ImageDescriptor desc;
109 desc = getPredefinedImageDescriptor(kind, true);
110 if (desc == null) {
111 desc = TaskEditorManager.getInstance().getImageDescriptor(kind);
112 }
113 if (desc != null) {
114 Image baseImage = desc.createImage();
115 images.put(ICompositeCheatSheetTask.NOT_STARTED, baseImage);
116
117 createImageWithOverlay(ICompositeCheatSheetTask.IN_PROGRESS,
118 "$nl$/icons/ovr16/task_in_progress.gif", images,
120 desc);
121 createImageWithOverlay(ICompositeCheatSheetTask.SKIPPED,
122 "$nl$/icons/ovr16/task_skipped.gif", images,
124 desc);
125 createDisabledImage(kind, BLOCKED,
126 images,
127 baseImage);
128 createImageWithOverlay(ICompositeCheatSheetTask.COMPLETED,
129 "$nl$/icons/ovr16/task_complete.gif", images,
131 desc);
132
133 }
134 return images;
135 }
136
137 private ImageDescriptor getPredefinedImageDescriptor(String kind, boolean isEnabled) {
138 String filename;
139 if (ICompositeCheatsheetTags.CHEATSHEET_TASK_KIND.equals(kind)) {
140 filename = "cheatsheet_task.gif"; } else if (ITaskGroup.SET.equals(kind)) {
142 filename = "task_set.gif"; } else if (ITaskGroup.CHOICE.equals(kind)) {
144 filename = "task_choice.gif"; } else if (ITaskGroup.SEQUENCE.equals(kind)) {
146 filename = "task_sequence.gif"; } else {
148 return null;
149 }
150 String iconPath = "$nl$/icons/"; if (isEnabled) {
152 iconPath += CheatSheetPlugin.T_OBJ;
153 } else {
154 iconPath += CheatSheetPlugin.T_DLCL;
155 }
156 iconPath += filename;
157 return createImageDescriptor(iconPath);
158 }
159
160 private void createImageWithOverlay(int state, String imagePath, ImageSet images, ImageDescriptor baseDescriptor) {
161 ImageDescriptor descriptor = createImageDescriptor(imagePath);
162 OverlayIcon icon = new OverlayIcon(baseDescriptor, new ImageDescriptor[][] {
163 {}, { descriptor } });
164 images.put(state, icon.createImage());
165 }
166
167 private void createDisabledImage(String kind, int state, ImageSet images, Image baseImage) {
168
173 ImageDescriptor desc = getPredefinedImageDescriptor(kind, false);
174 Image disabledImage;
175 if (desc != null) {
176 disabledImage = desc.createImage();
177 } else {
178 disabledImage = createGrayedImage(baseImage);
179 }
180 images.put(state, disabledImage);
181 }
182
183 private Image createGrayedImage(Image image) {
184 return new Image(image.getDevice(), image, SWT.IMAGE_DISABLE);
185 }
186
187 private ImageDescriptor createImageDescriptor(String relativePath) {
188 Bundle bundle = CheatSheetPlugin.getPlugin().getBundle();
189 URL url = FileLocator.find(bundle, new Path(relativePath),null);
190 if (url == null) return null;
191 try {
192 url = FileLocator.resolve(url);
193 return ImageDescriptor.createFromURL(url);
194 } catch (IOException e) {
195 return null;
196 }
197 }
198
199 public void dispose() {
200 if (imageMap != null) {
201 for (Iterator iter = imageMap.values().iterator(); iter.hasNext(); ) {
202 ImageSet nextImages = (ImageSet)iter.next();
203 nextImages.dispose();
204 }
205 imageMap = null;
206 }
207 if (defaultImage != null) {
208 defaultImage.dispose();
209 defaultImage = null;
210 }
211 }
212
213 }
214 |
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