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/*******************************************************************************
* Copyright (c) 2000, 2006 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.debug.internal.ui.actions.expressions;
import java.util.Iterator;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.debug.core.IExpressionManager;
import org.eclipse.debug.core.ILaunch;
import org.eclipse.debug.core.model.IDebugElement;
import org.eclipse.debug.core.model.IVariable;
import org.eclipse.debug.core.model.IWatchExpression;
import org.eclipse.debug.internal.ui.DebugUIPlugin;
import org.eclipse.debug.internal.ui.actions.ActionMessages;
import org.eclipse.debug.ui.DebugUITools;
import org.eclipse.debug.ui.IDebugUIConstants;
import org.eclipse.debug.ui.actions.IWatchExpressionFactoryAdapter;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IObjectActionDelegate;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.PartInitException;
/**
*
*/
public class WatchAction implements IObjectActionDelegate {
private IStructuredSelection fSelection;
/**
* @see org.eclipse.ui.IObjectActionDelegate#setActivePart(org.eclipse.jface.action.IAction, org.eclipse.ui.IWorkbenchPart)
*/
public void setActivePart(IAction action, IWorkbenchPart targetPart) {
}
/**
* @see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction)
*/
public void run(IAction action) {
if (fSelection == null) {
return;
}
Iterator iter = fSelection.iterator();
while (iter.hasNext()) {
IVariable variable = (IVariable) iter.next();
createExpression(variable);
}
}
private void showExpressionsView() {
IWorkbenchPage page = DebugUIPlugin.getDefault().getWorkbench().getActiveWorkbenchWindow().getActivePage();
IViewPart part = page.findView(IDebugUIConstants.ID_EXPRESSION_VIEW);
if (part == null) {
try {
page.showView(IDebugUIConstants.ID_EXPRESSION_VIEW);
} catch (PartInitException e) {
}
} else {
page.bringToTop(part);
}
}
private void createExpression(IVariable variable) {
IWatchExpression expression;
IWatchExpressionFactoryAdapter factory = (IWatchExpressionFactoryAdapter) variable.getAdapter(IWatchExpressionFactoryAdapter.class);
try {
String exp = variable.getName();
if (factory != null) {
exp = factory.createWatchExpression(variable);
}
expression = DebugPlugin.getDefault().getExpressionManager().newWatchExpression(exp);
} catch (CoreException e) {
DebugUIPlugin.errorDialog(DebugUIPlugin.getShell(), ActionMessages.WatchAction_0, ActionMessages.WatchAction_1, e); //
return;
}
DebugPlugin.getDefault().getExpressionManager().addExpression(expression);
IAdaptable object = DebugUITools.getDebugContext();
IDebugElement context = null;
if (object instanceof IDebugElement) {
context = (IDebugElement) object;
} else if (object instanceof ILaunch) {
context = ((ILaunch) object).getDebugTarget();
}
expression.setExpressionContext(context);
showExpressionsView();
}
/**
* @see org.eclipse.ui.IActionDelegate#selectionChanged(org.eclipse.jface.action.IAction, org.eclipse.jface.viewers.ISelection)
*/
public void selectionChanged(IAction action, ISelection selection) {
fSelection = null;
int enabled = 0;
int size = -1;
if (selection instanceof IStructuredSelection) {
fSelection = (IStructuredSelection) selection;
size = fSelection.size();
IExpressionManager manager = DebugPlugin.getDefault().getExpressionManager();
Iterator iterator = fSelection.iterator();
while (iterator.hasNext()) {
IVariable variable = (IVariable) iterator.next();
if (manager.hasWatchExpressionDelegate(variable.getModelIdentifier())) {
enabled++;
} else {
break;
}
}
}
action.setEnabled(enabled == size);
}
}
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