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1
11 package org.eclipse.debug.internal.ui.views.memory;
12
13
14 import java.util.Enumeration  ;
15 import java.util.Hashtable ;
16
17 import org.eclipse.debug.core.IMemoryBlockListener;
18 import org.eclipse.debug.core.model.IMemoryBlock;
19 import org.eclipse.debug.core.model.IMemoryBlockRetrieval;
20 import org.eclipse.debug.internal.ui.DebugUIPlugin;
21 import org.eclipse.debug.ui.DebugUITools;
22 import org.eclipse.debug.ui.contexts.IDebugContextListener;
23 import org.eclipse.jface.action.IAction;
24 import org.eclipse.jface.viewers.ISelection;
25 import org.eclipse.jface.viewers.ISelectionChangedListener;
26 import org.eclipse.jface.viewers.ISelectionProvider;
27 import org.eclipse.jface.viewers.SelectionChangedEvent;
28 import org.eclipse.jface.viewers.StructuredSelection;
29 import org.eclipse.swt.SWT;
30 import org.eclipse.swt.custom.StackLayout;
31 import org.eclipse.swt.events.SelectionListener;
32 import org.eclipse.swt.layout.GridData;
33 import org.eclipse.swt.layout.GridLayout;
34 import org.eclipse.swt.widgets.Composite;
35 import org.eclipse.swt.widgets.Control;
36 import org.eclipse.swt.widgets.TabFolder;
37 import org.eclipse.swt.widgets.TabItem;
38 import org.eclipse.ui.ISelectionListener;
39 import org.eclipse.ui.IViewPart;
40 import org.eclipse.ui.IWorkbenchPart;
41
42 public abstract class AbstractMemoryViewPane implements IMemoryBlockListener, ISelectionListener, SelectionListener, IMemoryView, ISelectionChangedListener, IMemoryViewPane, IDebugContextListener{
43
44 public static final String BEGINNING_POPUP = "popUpBegin"; protected static final StructuredSelection EMPTY = new StructuredSelection();
46
47 protected Composite fViewPaneCanvas;
48 protected StackLayout fStackLayout;
49 protected ViewTabEnablementManager fViewTabEnablementManager;
50 protected TabFolder fEmptyTabFolder;
51 protected Hashtable fTabFolderForDebugView = new Hashtable ();
52 protected boolean fVisible;
53 protected Hashtable fRenderingInfoTable;
54 protected IMemoryBlockRetrieval fKey; protected ViewPaneSelectionProvider fSelectionProvider;
56 protected IViewPart fParent;
57 protected String fPaneId;
58 private Composite fCanvas;
59 protected String fLabel;
60
61 public AbstractMemoryViewPane(IViewPart parent)
62 {
63 super();
64 fParent = parent;
65 fSelectionProvider = new ViewPaneSelectionProvider();
66 }
67
68
73 public Control createViewPane(Composite parent, String paneId, String label)
74 {
75 fPaneId = paneId;
76 fLabel = label;
77 fCanvas = new Composite(parent, SWT.NONE);
78 GridLayout layout = new GridLayout();
79 layout.makeColumnsEqualWidth = false;
80 layout.numColumns = 1;
81 layout.marginHeight = 0;
82 layout.marginWidth = 0;
83 GridData data = new GridData();
84 data.grabExcessHorizontalSpace = true;
85 data.grabExcessVerticalSpace = true;
86 data.verticalAlignment = SWT.BEGINNING;
87 data.horizontalAlignment = SWT.BEGINNING;
88 fCanvas.setLayout(layout);
89 fCanvas.setLayoutData(data);
90
91 Composite memoryViewAreaParent = fCanvas;
93 Composite subCanvas = new Composite(memoryViewAreaParent, SWT.NONE);
94 fViewPaneCanvas = subCanvas;
95 fStackLayout = new StackLayout();
96 GridData memoryAreaData = new GridData();
97 memoryAreaData.grabExcessHorizontalSpace = true;
98 memoryAreaData.grabExcessVerticalSpace = true;
99 memoryAreaData.verticalAlignment = SWT.FILL;
100 memoryAreaData.horizontalAlignment = SWT.FILL;
101 fViewPaneCanvas.setLayout(fStackLayout);
102 fViewPaneCanvas.setLayoutData(memoryAreaData);
103
104 fViewTabEnablementManager = new ViewTabEnablementManager();
105
106 fEmptyTabFolder = new TabFolder(fViewPaneCanvas, SWT.NULL);
107 setTabFolder(fEmptyTabFolder);
108
109 addListeners();
110
111 Object context = DebugUITools.getDebugContext();
112 if (context != null)
113 {
114 IMemoryBlockRetrieval retrieval = MemoryViewUtil.getMemoryBlockRetrieval(context);
115 if (retrieval != null)
116 createFolder(retrieval);
117 }
118
119 fVisible = true;
120
121 return fCanvas;
122 }
123
124 protected void addListeners()
125 {
126 MemoryViewUtil.getMemoryBlockManager().addListener(this);
127 fParent.getViewSite().getPage().addSelectionListener(this);
128 DebugUITools.getDebugContextManager().getContextService(fParent.getSite().getWorkbenchWindow()).addDebugContextListener(this);
129 }
130
131 protected void removeListeners()
132 {
133 MemoryViewUtil.getMemoryBlockManager().removeListener(this);
134 fParent.getViewSite().getPage().removeSelectionListener(this);
135 DebugUITools.getDebugContextManager().getContextService(fParent.getSite().getWorkbenchWindow()).removeDebugContextListener(this);
136
137 if (fStackLayout.topControl != null)
138 {
139 TabFolder old = (TabFolder)fStackLayout.topControl;
140
141 if (!old.isDisposed())
142 {
143 old.removeSelectionListener(this);
144 old.removeSelectionListener(fViewTabEnablementManager);
145 }
146 }
147 }
148
149 protected void setTabFolder(TabFolder folder)
150 {
151 if (fStackLayout.topControl != null)
152 {
153 TabFolder old = (TabFolder)fStackLayout.topControl;
154
155 if (!old.isDisposed())
156 {
157 old.removeSelectionListener(this);
158 old.removeSelectionListener(fViewTabEnablementManager);
159 }
160 }
161
162 fStackLayout.topControl = folder;
163
164 if (folder.getItemCount() > 0)
165 {
166 TabItem[] selectedItem = folder.getSelection();
167
168 if (selectedItem.length > 0)
169 {
170 Object selected = getCurrentSelection();
171 if (selected != null)
172 {
173 fSelectionProvider.setSelection(new StructuredSelection(selected));
174 }
175 else
176 {
177 fSelectionProvider.setSelection(AbstractMemoryViewPane.EMPTY);
178 }
179 }
180 }
181 else
182 {
183 fSelectionProvider.setSelection(AbstractMemoryViewPane.EMPTY);
184 }
185
186 folder.addSelectionListener(this);
187 folder.addSelectionListener(fViewTabEnablementManager);
188 }
189
190
191 private void createFolder(IMemoryBlockRetrieval memRetrieval)
192 {
193 if (fTabFolderForDebugView.containsKey(memRetrieval)) {
195 if (fStackLayout.topControl != (TabFolder)fTabFolderForDebugView.get(memRetrieval)) {
196 setTabFolder((TabFolder)fTabFolderForDebugView.get(memRetrieval));
197 fViewPaneCanvas.layout();
198 }
199 } else { fTabFolderForDebugView.put(memRetrieval, new TabFolder(fViewPaneCanvas, SWT.NULL));
201 setTabFolder((TabFolder)fTabFolderForDebugView.get(memRetrieval));
202 fViewPaneCanvas.layout();
203 }
204 }
205
206 public IMemoryViewTab getTopMemoryTab() {
207
208 if (fStackLayout.topControl instanceof TabFolder)
209 {
210 TabFolder folder = (TabFolder)fStackLayout.topControl;
211 if (!folder.isDisposed())
212 {
213 int index = folder.getSelectionIndex();
214 if (index >= 0) {
215 TabItem tab = folder.getItem(index);
216 return (IMemoryViewTab)tab.getData();
217 }
218 }
219 }
220 return null;
221 }
222
223 protected void disposeTab(TabItem tabItem)
224 {
225 if (tabItem == null)
226 return;
227
228 if (!tabItem.isDisposed())
231 {
232 tabItem.dispose();
233 }
234 }
235
236 protected void emptyFolder()
237 {
238 setTabFolder(fEmptyTabFolder);
239 if (!fViewPaneCanvas.isDisposed()) {
240 fViewPaneCanvas.layout();
241 }
242 }
243
244 public void addSelectionListener(ISelectionChangedListener listener)
245 {
246 if (fSelectionProvider == null)
247 fSelectionProvider = new ViewPaneSelectionProvider();
248
249 fSelectionProvider.addSelectionChangedListener(listener);
250 }
251
252 public void removeSelctionListener(ISelectionChangedListener listener)
253 {
254 if (fSelectionProvider == null)
255 return;
256
257 fSelectionProvider.removeSelectionChangedListener(listener);
258 }
259
260 public ISelectionProvider getSelectionProvider()
261 {
262 return fSelectionProvider;
263 }
264
265 public void dispose()
266 {
267 removeListeners();
268
269 fEmptyTabFolder.dispose();
271
272 try {
274
275 if (fTabFolderForDebugView != null) {
276 Enumeration enumeration = fTabFolderForDebugView.elements();
277
278 while (enumeration.hasMoreElements())
279 {
280 TabFolder tabFolder = (TabFolder)enumeration.nextElement();
281
282 if (tabFolder.isDisposed())
283 continue;
284
285 TabItem[] tabs = tabFolder.getItems();
287
288 for (int i=0; i<tabs.length; i++)
289 {
290 disposeTab(tabs[i]);
291 }
292
293 tabFolder.dispose();
294 }
295
296 fTabFolderForDebugView.clear();
298 fTabFolderForDebugView = null;
299 }
300 } catch (Exception e) {
301
302 DebugUIPlugin.logErrorMessage("Exception occurred when the Memory View is disposed."); }
304 }
305
306 public void setVisible(boolean visible)
307 {
308 fVisible = visible;
309
310 IMemoryViewTab currentTab = getTopMemoryTab();
311 if (currentTab != null)
312 currentTab.setEnabled(visible);
313 }
314
315 public void selectionChanged(SelectionChangedEvent event) {
316 ISelection selection = event.getSelection();
317 selectionChanged(fParent,selection);
318
319 fSelectionProvider.setSelection(selection);
320 }
321
322
325 public String getPaneId()
326 {
327 return fPaneId;
328 }
329
330
331
334 public Control getControl() {
335 return fCanvas;
336 }
337
338 public boolean isVisible()
339 {
340 return fVisible;
341 }
342
343 public String getLabel()
344 {
345 return fLabel;
346 }
347
348
351 abstract public void memoryBlocksAdded(IMemoryBlock[] memoryBlocks);
352
353
356 abstract public void memoryBlocksRemoved(final IMemoryBlock[] memoryBlocks);
357
358
361 abstract public void selectionChanged(IWorkbenchPart part, ISelection selection);
362
363
366 abstract public Object getCurrentSelection();
367
368
372 abstract public void restoreViewPane();
373
374
377 abstract public IAction[] getActions();
378
379 }
380 |
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