| /******************************************************************************* |
| * Copyright (c) 2000, 2015 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Wind River Systems - integration with non-standard debug models (Bug 209883) |
| *******************************************************************************/ |
| package org.eclipse.debug.internal.ui.actions.expressions; |
| |
| import java.util.Iterator; |
| |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.debug.core.DebugEvent; |
| import org.eclipse.debug.core.DebugPlugin; |
| import org.eclipse.debug.core.IDebugEventSetListener; |
| import org.eclipse.debug.core.model.IWatchExpression; |
| import org.eclipse.jface.action.IAction; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.swt.widgets.Event; |
| import org.eclipse.ui.IActionDelegate2; |
| import org.eclipse.ui.IViewActionDelegate; |
| import org.eclipse.ui.IViewPart; |
| |
| /** |
| * |
| */ |
| public class EnableWatchExpressionAction implements IViewActionDelegate, IActionDelegate2, IDebugEventSetListener { |
| |
| private ISelection fSelection; |
| private IAction fAction; |
| protected boolean fEnable= true; |
| |
| @Override |
| public void init(IViewPart view) { |
| DebugPlugin.getDefault().addDebugEventListener(this); |
| } |
| |
| @Override |
| public void run(IAction action) { |
| if (fSelection instanceof IStructuredSelection) { |
| Iterator<?> iter = ((IStructuredSelection) fSelection).iterator(); |
| IWatchExpression expression; |
| while (iter.hasNext()) { |
| expression= getWatchExpression(iter.next()); |
| if (expression != null) { |
| expression.setEnabled(fEnable); |
| fireWatchExpressionChanged(expression); |
| } |
| } |
| } else if (fSelection instanceof IWatchExpression) { |
| IWatchExpression expression= ((IWatchExpression) fSelection); |
| expression.setEnabled(fEnable); |
| fireWatchExpressionChanged(expression); |
| } |
| } |
| |
| /** |
| * Fires a {@link DebugEvent} for the given watch expression |
| * @param expression the expression that has changed |
| */ |
| private void fireWatchExpressionChanged(IWatchExpression expression) { |
| DebugPlugin.getDefault().fireDebugEventSet(new DebugEvent[] {new DebugEvent(expression, DebugEvent.CHANGE)}); |
| } |
| |
| @Override |
| public void selectionChanged(IAction action, ISelection selection) { |
| fSelection= selection; |
| if (fSelection instanceof IStructuredSelection) { |
| boolean enabled= false; |
| Iterator<?> iter = ((IStructuredSelection) selection).iterator(); |
| while (iter.hasNext()) { |
| IWatchExpression expression = getWatchExpression(iter.next()); |
| if (expression != null && expression.isEnabled() != fEnable) { |
| enabled= true; |
| break; |
| } |
| } |
| action.setEnabled(enabled); |
| } else if (fSelection instanceof IWatchExpression) { |
| action.setEnabled(((IWatchExpression) fSelection).isEnabled() != fEnable); |
| } else { |
| action.setEnabled(false); |
| } |
| } |
| |
| private IWatchExpression getWatchExpression(Object element) { |
| if (element instanceof IWatchExpression) { |
| return (IWatchExpression)element; |
| } else if (element instanceof IAdaptable) { |
| return ((IAdaptable)element).getAdapter(IWatchExpression.class); |
| } |
| return null; |
| } |
| |
| @Override |
| public void dispose() { |
| DebugPlugin.getDefault().removeDebugEventListener(this); |
| } |
| |
| @Override |
| public void init(IAction action) { |
| fAction = action; |
| } |
| |
| @Override |
| public void runWithEvent(IAction action, Event event) { |
| run(action); |
| } |
| |
| @Override |
| public void handleDebugEvents(DebugEvent[] events) { |
| for (int i = 0; i < events.length; i++) { |
| DebugEvent event = events[i]; |
| if (event.getSource() instanceof IWatchExpression) { |
| if (event.getKind() == DebugEvent.CHANGE) { |
| selectionChanged(fAction, fSelection); |
| } |
| } |
| } |
| |
| } |
| } |