|
1
11
12 package org.eclipse.ui.internal.cheatsheets.composite.views;
13
14 import java.io.IOException  ;
15 import java.lang.reflect.Constructor ;
16 import java.net.URL ;
17 import java.util.HashMap ;
18 import java.util.Map ;
19
20 import org.eclipse.core.runtime.FileLocator;
21 import org.eclipse.core.runtime.IStatus;
22 import org.eclipse.core.runtime.Path;
23 import org.eclipse.core.runtime.Platform;
24 import org.eclipse.core.runtime.Status;
25 import org.eclipse.jface.resource.ImageDescriptor;
26 import org.eclipse.osgi.util.NLS;
27 import org.eclipse.swt.graphics.Image;
28 import org.eclipse.ui.internal.cheatsheets.CheatSheetPlugin;
29 import org.eclipse.ui.internal.cheatsheets.ICheatSheetResource;
30 import org.eclipse.ui.internal.cheatsheets.Messages;
31 import org.eclipse.ui.internal.cheatsheets.registry.CheatSheetRegistryReader;
32 import org.eclipse.ui.internal.provisional.cheatsheets.TaskExplorer;
33 import org.osgi.framework.Bundle;
34
35 public class TaskExplorerManager {
36 private static TaskExplorerManager instance;
37
38 private Map images;
39
40 private TaskExplorerManager() {
41
42 }
43
44 public static TaskExplorerManager getInstance() {
45 if (instance == null) {
46 instance = new TaskExplorerManager();
47 }
48 return instance;
49 }
50
51 public TaskExplorer getExplorer(String explorerKind) {
52 CheatSheetRegistryReader.TaskExplorerNode explorerInfo =
53 CheatSheetRegistryReader.getInstance().findTaskExplorer(explorerKind);
54 if (explorerInfo != null) {
55 TaskExplorer explorerInstance = null;
56 Class extClass = null;
57 String className = explorerInfo.getClassName();
58 try {
59 Bundle bundle = Platform.getBundle(explorerInfo.getPluginId());
60 extClass = bundle.loadClass(className);
61 } catch (Exception e) {
62 String message = NLS.bind(Messages.ERROR_LOADING_CLASS, (new Object [] {className}));
63 Status status = new Status(IStatus.ERROR, ICheatSheetResource.CHEAT_SHEET_PLUGIN_ID, IStatus.OK, message, e);
64 CheatSheetPlugin.getPlugin().getLog().log(status);
65 }
66 try {
67 if (extClass != null) {
68 Constructor c = extClass.getConstructor(new Class [0]);
69 Object [] parameters = new Object [0];
70 explorerInstance = (TaskExplorer) c.newInstance(parameters);
71 }
72 } catch (Exception e) {
73 String message = NLS.bind(Messages.ERROR_CREATING_CLASS, (new Object [] {className}));
74 IStatus status = new Status(IStatus.ERROR, ICheatSheetResource.CHEAT_SHEET_PLUGIN_ID, IStatus.OK, message, e);
75 CheatSheetPlugin.getPlugin().getLog().log(status);
76 }
77
78 return explorerInstance;
79 }
80
81 return null;
82 }
83
84 private ImageDescriptor getImageDescriptor(String explorerKind) {
85 CheatSheetRegistryReader.TaskExplorerNode explorerInfo =
86 CheatSheetRegistryReader.getInstance().findTaskExplorer(explorerKind);
87 if (explorerInfo == null) {
88 return null;
89 }
90 String iconPath = explorerInfo.getIconPath();
91 if (iconPath == null) {
92 return null;
93 }
94 Bundle bundle = Platform.getBundle(explorerInfo.getPluginId());
95 URL url = FileLocator.find(bundle, new Path(iconPath), null);
96 try {
97 url = FileLocator.resolve(url);
98 return ImageDescriptor.createFromURL(url);
99 } catch (IOException e) {
100 return null;
101 }
102 }
103
104 private Map getImages() {
105 if (images == null) {
106 initImages();
107 }
108 return images;
109 }
110
111
112 private void initImages() {
113 if (images == null) {
114 images = new HashMap ();
115 String [] ids = CheatSheetRegistryReader.getInstance().getExplorerIds();
116 for (int i = 0; i < ids.length; i++) {
117 ImageDescriptor descriptor = getImageDescriptor(ids[i]);
118 if (descriptor != null) {
119 images.put(ids[i], descriptor.createImage());
120 }
121 }
122 }
123 }
124
125 public String getName(String explorerKind) {
126 CheatSheetRegistryReader.TaskExplorerNode explorerInfo =
127 CheatSheetRegistryReader.getInstance().findTaskExplorer(explorerKind);
128 if (explorerInfo != null) {
129 return explorerInfo.getName();
130 }
131 return null;
132 }
133
134 public Image getImage(String id) {
135 return (Image)getImages().get(id);
136 }
137
138 }
139 |
Popular Tags |
Java API By Example, From Geeks To Geeks.