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/*******************************************************************************
* Copyright (c) 2010, 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
*******************************************************************************/
package org.eclipse.debug.internal.ui.commands.actions;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.commands.IHandler2;
import org.eclipse.core.commands.IHandlerListener;
import org.eclipse.debug.internal.ui.views.launch.LaunchView;
import org.eclipse.debug.ui.IDebugUIConstants;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.IViewReference;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
/**
* An action handler that delegates to an action in the debug view.
*/
public abstract class DebugActionHandler implements IHandler2 {
private String fActionId;
/**
* Constructs a new handler for the given action identifier.
*
* @param actionId action identifier
*/
public DebugActionHandler(String actionId) {
fActionId = actionId;
}
/**
* Returns the delegate handler or <code>null</code> if none.
*
* @return handler or <code>null</code>
*/
protected IHandler2 getDelegate() {
IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
if (window != null && window.getActivePage() != null) {
IViewReference reference = window.getActivePage().findViewReference(IDebugUIConstants.ID_DEBUG_VIEW);
if (reference != null) {
IViewPart view = reference.getView(false);
if (view instanceof LaunchView) {
return ((LaunchView)view).getHandler(fActionId);
}
}
}
return null;
}
@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
IHandler2 delegate = getDelegate();
if (delegate != null) {
return delegate.execute(event);
}
return null;
}
@Override
public void addHandlerListener(IHandlerListener handlerListener) {
IHandler2 delegate = getDelegate();
if (delegate != null) {
delegate.addHandlerListener(handlerListener);
}
}
@Override
public void dispose() {
}
@Override
public boolean isEnabled() {
IHandler2 delegate = getDelegate();
if (delegate != null) {
return delegate.isEnabled();
}
return false;
}
@Override
public boolean isHandled() {
IHandler2 delegate = getDelegate();
if (delegate != null) {
return delegate.isHandled();
}
return false;
}
@Override
public void removeHandlerListener(IHandlerListener handlerListener) {
IHandler2 delegate = getDelegate();
if (delegate != null) {
delegate.removeHandlerListener(handlerListener);
}
}
@Override
public void setEnabled(Object evaluationContext) {
IHandler2 delegate = getDelegate();
if (delegate != null) {
delegate.setEnabled(evaluationContext);
}
}
}
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