| /******************************************************************************* |
| * Copyright (c) 2008 Wind River Systems 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: |
| * Wind River Systems - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.debug.internal.ui.actions.expressions; |
| |
| import java.util.Iterator; |
| |
| import org.eclipse.core.commands.AbstractHandler; |
| import org.eclipse.core.commands.ExecutionEvent; |
| import org.eclipse.core.commands.ExecutionException; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.debug.core.DebugPlugin; |
| 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.debug.ui.actions.IWatchExpressionFactoryAdapter2; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.ui.IViewPart; |
| import org.eclipse.ui.IWorkbenchPage; |
| import org.eclipse.ui.PartInitException; |
| import org.eclipse.ui.handlers.HandlerUtil; |
| |
| /** |
| * Handler for creating a watch expression. |
| * |
| * @since 3.4 |
| */ |
| public class WatchHandler extends AbstractHandler { |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.core.commands.AbstractHandler#execute(org.eclipse.core.commands.ExecutionEvent) |
| */ |
| public Object execute(ExecutionEvent event) throws ExecutionException { |
| ISelection selection = HandlerUtil.getCurrentSelection(event); |
| if (selection instanceof IStructuredSelection) { |
| Iterator iter = ((IStructuredSelection)selection).iterator(); |
| while (iter.hasNext()) { |
| Object element = iter.next(); |
| createExpression(element); |
| } |
| } |
| return null; |
| } |
| |
| |
| 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(Object element) { |
| String expressionString; |
| try { |
| if (element instanceof IVariable) { |
| IVariable variable = (IVariable)element; |
| IWatchExpressionFactoryAdapter factory = getFactory(variable); |
| expressionString = variable.getName(); |
| if (factory != null) { |
| expressionString = factory.createWatchExpression(variable); |
| } |
| } else { |
| IWatchExpressionFactoryAdapter2 factory2 = getFactory2(element); |
| if (factory2 != null) { |
| expressionString = factory2.createWatchExpression(element); |
| } else { |
| // Action should not have been enabled |
| return; |
| } |
| } |
| } catch (CoreException e) { |
| DebugUIPlugin.errorDialog(DebugUIPlugin.getShell(), ActionMessages.WatchAction_0, ActionMessages.WatchAction_1, e); // |
| return; |
| } |
| |
| IWatchExpression expression; |
| expression = DebugPlugin.getDefault().getExpressionManager().newWatchExpression(expressionString); |
| 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(); |
| } |
| |
| |
| /** |
| * Returns the factory adapter for the given variable or <code>null</code> if none. |
| * |
| * @param variable |
| * @return factory or <code>null</code> |
| */ |
| static IWatchExpressionFactoryAdapter getFactory(IVariable variable) { |
| return (IWatchExpressionFactoryAdapter) variable.getAdapter(IWatchExpressionFactoryAdapter.class); |
| } |
| |
| /** |
| * Returns the factory adapter for the given variable or <code>null</code> if none. |
| * |
| * @param variable |
| * @return factory or <code>null</code> |
| */ |
| static IWatchExpressionFactoryAdapter2 getFactory2(Object element) { |
| if (element instanceof IAdaptable) { |
| return (IWatchExpressionFactoryAdapter2)((IAdaptable)element).getAdapter(IWatchExpressionFactoryAdapter2.class); |
| } |
| return null; |
| } |
| |
| } |