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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
18 import org.eclipse.core.runtime.FileLocator;
19 import org.eclipse.core.runtime.IStatus;
20 import org.eclipse.core.runtime.Path;
21 import org.eclipse.core.runtime.Platform;
22 import org.eclipse.core.runtime.Status;
23 import org.eclipse.jface.resource.ImageDescriptor;
24 import org.eclipse.osgi.util.NLS;
25 import org.eclipse.ui.internal.cheatsheets.CheatSheetPlugin;
26 import org.eclipse.ui.internal.cheatsheets.ICheatSheetResource;
27 import org.eclipse.ui.internal.cheatsheets.Messages;
28 import org.eclipse.ui.internal.cheatsheets.registry.CheatSheetRegistryReader;
29 import org.eclipse.ui.internal.provisional.cheatsheets.TaskEditor;
30 import org.osgi.framework.Bundle;
31
32 public class TaskEditorManager {
33
34 private static TaskEditorManager instance;
35
36 private TaskEditorManager() {
37 }
38
39 public static TaskEditorManager getInstance() {
40 if (instance == null) {
41 instance = new TaskEditorManager();
42 }
43 return instance;
44 }
45
46 public TaskEditor getEditor(String editorKind) {
47 CheatSheetRegistryReader.TaskEditorNode editorInfo =
48 CheatSheetRegistryReader.getInstance().findTaskEditor(editorKind);
49 if (editorInfo != null) {
50 TaskEditor editorInstance = null;
51 Class extClass = null;
52 String className = editorInfo.getClassName();
53 try {
54 Bundle bundle = Platform.getBundle(editorInfo.getPluginId());
55 extClass = bundle.loadClass(className);
56 } catch (Exception e) {
57 String message = NLS.bind(Messages.ERROR_LOADING_CLASS, (new Object [] {className}));
58 Status status = new Status(IStatus.ERROR, ICheatSheetResource.CHEAT_SHEET_PLUGIN_ID, IStatus.OK, message, e);
59 CheatSheetPlugin.getPlugin().getLog().log(status);
60 }
61 try {
62 if (extClass != null) {
63 Constructor c = extClass.getConstructor(new Class [0]);
64 Object [] parameters = new Object [0];
65 editorInstance = (TaskEditor) c.newInstance(parameters);
66 }
67 } catch (Exception e) {
68 String message = NLS.bind(Messages.ERROR_CREATING_CLASS, (new Object [] {className}));
69 IStatus status = new Status(IStatus.ERROR, ICheatSheetResource.CHEAT_SHEET_PLUGIN_ID, IStatus.OK, message, e);
70 CheatSheetPlugin.getPlugin().getLog().log(status);
71 }
72
73 return editorInstance;
74 }
75
76 return null;
77 }
78
79 public ImageDescriptor getImageDescriptor(String editorKind) {
80 CheatSheetRegistryReader.TaskEditorNode editorInfo =
81 CheatSheetRegistryReader.getInstance().findTaskEditor(editorKind);
82 if (editorInfo != null) {
83 Bundle bundle = Platform.getBundle(editorInfo.getPluginId());
84 URL url = FileLocator.find(bundle, new Path(editorInfo.getIconPath()), null);
85 if (url != null) {
86 try {
87 url = FileLocator.resolve(url);
88 return ImageDescriptor.createFromURL(url);
89 } catch (IOException e) {
90 return null;
91 }
92 }
93 }
94 return null;
95 }
96
97 }
98 |
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