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1
11 package org.eclipse.jdt.internal.debug.ui.actions;
12
13
14 import org.eclipse.jdt.core.IClassFile;
15 import org.eclipse.jdt.core.ICompilationUnit;
16 import org.eclipse.jdt.core.IJavaElement;
17 import org.eclipse.jdt.core.IMember;
18 import org.eclipse.jdt.core.JavaModelException;
19 import org.eclipse.jdt.internal.debug.ui.JDIDebugUIPlugin;
20 import org.eclipse.jdt.internal.debug.ui.snippeteditor.JavaSnippetEditor;
21 import org.eclipse.jdt.ui.IWorkingCopyManager;
22 import org.eclipse.jdt.ui.JavaUI;
23 import org.eclipse.jface.text.ITextSelection;
24 import org.eclipse.jface.viewers.ISelection;
25 import org.eclipse.ui.IEditorInput;
26 import org.eclipse.ui.IEditorPart;
27 import org.eclipse.ui.IPartListener;
28 import org.eclipse.ui.IWindowListener;
29 import org.eclipse.ui.IWorkbenchPage;
30 import org.eclipse.ui.IWorkbenchPart;
31 import org.eclipse.ui.IWorkbenchWindow;
32 import org.eclipse.ui.texteditor.ITextEditor;
33
34 public class ActionDelegateHelper implements IPartListener, IWindowListener {
35
36 private static ActionDelegateHelper fgDefault;
37 private IMember fMember= null;
38 private ITextEditor fTextEditor= null;
39 private ISelection fCurrentSelection= null;
40 private IWorkbenchWindow fCurrentWindow= null;
41
42 public static ActionDelegateHelper getDefault() {
43 if (fgDefault == null) {
44 fgDefault= new ActionDelegateHelper();
45 }
46 return fgDefault;
47 }
48
49 private ActionDelegateHelper() {
50 fCurrentWindow= JDIDebugUIPlugin.getActiveWorkbenchWindow();
51 if (fCurrentWindow != null) {
52 fCurrentWindow.getWorkbench().addWindowListener(this);
53 fCurrentWindow.getPartService().addPartListener(this);
54 IWorkbenchPage page= fCurrentWindow.getActivePage();
55 if (page != null) {
56 IEditorPart part= page.getActiveEditor();
57 checkToSetTextEditor(part);
58 }
59 }
60 }
61
62
65 public void partActivated(IWorkbenchPart part) {
66 checkToSetTextEditor(part);
67 }
68
69
72 public void partBroughtToTop(IWorkbenchPart part) {
73 }
74
75
78 public void partClosed(IWorkbenchPart part) {
79 if (part == getTextEditor()) {
80 cleanup();
81 }
82 }
83
84
87 public void partDeactivated(IWorkbenchPart part) {
88 }
89
90
93 public void partOpened(IWorkbenchPart part) {
94 }
95
96 protected IMember getMember() {
97 return fMember;
98 }
99
100 protected void setMember(IMember member) {
101 fMember = member;
102 }
103
104 protected void checkToSetTextEditor(IWorkbenchPart part) {
105 if (part instanceof ITextEditor) {
106 if (part instanceof JavaSnippetEditor) {
107 cleanup();
108 } else {
109 setTextEditor((ITextEditor)part);
110 }
111 }
112 }
113
114 public IMember getCurrentMember(ITextSelection currentSelection) {
115 if (currentSelection == getCurrentSelection()) {
116 return getMember();
117 }
118 setCurrentSelection(currentSelection);
119 ITextEditor editor= getTextEditor();
120 if (editor == null) {
121 return null;
122 }
123 IEditorInput editorInput= editor.getEditorInput();
124 IMember m= null;
125 try {
126 IClassFile classFile= (IClassFile)editorInput.getAdapter(IClassFile.class);
127 if (classFile != null) {
128 IJavaElement e= classFile.getElementAt(currentSelection.getOffset());
129 if (e instanceof IMember) {
130 m= (IMember)e;
131 }
132 } else {
133 IWorkingCopyManager manager= JavaUI.getWorkingCopyManager();
134 ICompilationUnit unit= manager.getWorkingCopy(editorInput);
135 if (unit != null) {
136 synchronized (unit) {
137 unit.reconcile(ICompilationUnit.NO_AST , false, null, null);
138 }
139 IJavaElement e = unit.getElementAt(currentSelection.getOffset());
140 if (e instanceof IMember) {
141 m= (IMember)e;
142 }
143 }
144 }
145
146 } catch (JavaModelException jme) {
147 JDIDebugUIPlugin.log(jme);
148 }
149
150 setMember(m);
151 return m;
152 }
153
154 protected ITextEditor getTextEditor() {
155 return fTextEditor;
156 }
157
158 protected void setTextEditor(ITextEditor textEditor) {
159 fTextEditor = textEditor;
160 }
161
162 protected ISelection getCurrentSelection() {
163 return fCurrentSelection;
164 }
165
166 protected void setCurrentSelection(ISelection currentSelection) {
167 fCurrentSelection = currentSelection;
168 }
169
170
173 public void windowActivated(IWorkbenchWindow window) {
174 if (fCurrentWindow != null) {
175 fCurrentWindow.getPartService().removePartListener(this);
176 cleanup();
177 }
178 fCurrentWindow= window;
179 fCurrentWindow.getPartService().addPartListener(this);
180 IWorkbenchPage page= window.getActivePage();
181 if (page != null) {
182 checkToSetTextEditor(page.getActiveEditor());
183 }
184 }
185
186
189 public void windowClosed(IWorkbenchWindow window) {
190 if (fCurrentWindow == window) {
191 fCurrentWindow= null;
192 cleanup();
193 }
194 }
195
196
199 public void windowDeactivated(IWorkbenchWindow window) {
200 }
201
202
205 public void windowOpened(IWorkbenchWindow window) {
206 }
207
208 protected void cleanup() {
209 setTextEditor(null);
210 setCurrentSelection(null);
211 setMember(null);
212 }
213 }
214 |
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