|
1
11 package org.eclipse.debug.internal.ui.actions.expressions;
12
13 import java.util.Iterator  ;
14
15 import org.eclipse.core.runtime.CoreException;
16 import org.eclipse.core.runtime.IAdaptable;
17 import org.eclipse.debug.core.DebugPlugin;
18 import org.eclipse.debug.core.IExpressionManager;
19 import org.eclipse.debug.core.ILaunch;
20 import org.eclipse.debug.core.model.IDebugElement;
21 import org.eclipse.debug.core.model.IVariable;
22 import org.eclipse.debug.core.model.IWatchExpression;
23 import org.eclipse.debug.internal.ui.DebugUIPlugin;
24 import org.eclipse.debug.internal.ui.actions.ActionMessages;
25 import org.eclipse.debug.internal.ui.views.variables.IndexedVariablePartition;
26 import org.eclipse.debug.ui.DebugUITools;
27 import org.eclipse.debug.ui.IDebugUIConstants;
28 import org.eclipse.debug.ui.actions.IWatchExpressionFactoryAdapter;
29 import org.eclipse.debug.ui.actions.IWatchExpressionFactoryAdapterExtension;
30 import org.eclipse.jface.action.IAction;
31 import org.eclipse.jface.viewers.ISelection;
32 import org.eclipse.jface.viewers.IStructuredSelection;
33 import org.eclipse.ui.IObjectActionDelegate;
34 import org.eclipse.ui.IViewPart;
35 import org.eclipse.ui.IWorkbenchPage;
36 import org.eclipse.ui.IWorkbenchPart;
37 import org.eclipse.ui.PartInitException;
38
39
42 public class WatchAction implements IObjectActionDelegate {
43
44 private IStructuredSelection fSelection;
45
46
49 public void setActivePart(IAction action, IWorkbenchPart targetPart) {
50 }
51
52
55 public void run(IAction action) {
56 if (fSelection == null) {
57 return;
58 }
59 Iterator iter = fSelection.iterator();
60 while (iter.hasNext()) {
61 IVariable variable = (IVariable) iter.next();
62 createExpression(variable);
63 }
64 }
65
66 private void showExpressionsView() {
67 IWorkbenchPage page = DebugUIPlugin.getDefault().getWorkbench().getActiveWorkbenchWindow().getActivePage();
68 IViewPart part = page.findView(IDebugUIConstants.ID_EXPRESSION_VIEW);
69 if (part == null) {
70 try {
71 page.showView(IDebugUIConstants.ID_EXPRESSION_VIEW);
72 } catch (PartInitException e) {
73 }
74 } else {
75 page.bringToTop(part);
76 }
77
78 }
79
80 private void createExpression(IVariable variable) {
81 IWatchExpression expression;
82 IWatchExpressionFactoryAdapter factory = getFactory(variable);
83 try {
84 String exp = variable.getName();
85 if (factory != null) {
86 exp = factory.createWatchExpression(variable);
87 }
88 expression = DebugPlugin.getDefault().getExpressionManager().newWatchExpression(exp);
89 } catch (CoreException e) {
90 DebugUIPlugin.errorDialog(DebugUIPlugin.getShell(), ActionMessages.WatchAction_0, ActionMessages.WatchAction_1, e); return;
92 }
93 DebugPlugin.getDefault().getExpressionManager().addExpression(expression);
94 IAdaptable object = DebugUITools.getDebugContext();
95 IDebugElement context = null;
96 if (object instanceof IDebugElement) {
97 context = (IDebugElement) object;
98 } else if (object instanceof ILaunch) {
99 context = ((ILaunch) object).getDebugTarget();
100 }
101 expression.setExpressionContext(context);
102 showExpressionsView();
103 }
104
105
108 public void selectionChanged(IAction action, ISelection selection) {
109 fSelection = null;
110 int enabled = 0;
111 int size = -1;
112 if (selection instanceof IStructuredSelection) {
113 fSelection = (IStructuredSelection) selection;
114 size = fSelection.size();
115 IExpressionManager manager = DebugPlugin.getDefault().getExpressionManager();
116 Iterator iterator = fSelection.iterator();
117 while (iterator.hasNext()) {
118 IVariable variable = (IVariable) iterator.next();
119 if (variable instanceof IndexedVariablePartition) {
120 break;
121 } else if (manager.hasWatchExpressionDelegate(variable.getModelIdentifier()) && isFactoryEnabled(variable)) {
122 enabled++;
123 } else {
124 break;
125 }
126 }
127 }
128 action.setEnabled(enabled == size);
129 }
130
131
137 private boolean isFactoryEnabled(IVariable variable) {
138 IWatchExpressionFactoryAdapter factory = getFactory(variable);
139 if (factory instanceof IWatchExpressionFactoryAdapterExtension) {
140 IWatchExpressionFactoryAdapterExtension ext = (IWatchExpressionFactoryAdapterExtension) factory;
141 return ext.canCreateWatchExpression(variable);
142 }
143 return true;
144 }
145
146
152 private IWatchExpressionFactoryAdapter getFactory(IVariable variable) {
153 return (IWatchExpressionFactoryAdapter) variable.getAdapter(IWatchExpressionFactoryAdapter.class);
154 }
155 }
156 |
Popular Tags |
Java API By Example, From Geeks To Geeks.