TCFReverseToggleCommand.java

/*******************************************************************************
 * Copyright (c) 2010, 2012 Wind River Systems, Inc. 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.tcf.internal.cdt.ui.commands;

import java.util.concurrent.ExecutionException;

import org.eclipse.cdt.debug.core.model.IReverseToggleHandler;
import org.eclipse.debug.core.commands.IDebugCommandRequest;
import org.eclipse.debug.core.commands.IEnabledStateRequest;
import org.eclipse.tcf.internal.cdt.ui.Activator;
import org.eclipse.tcf.internal.debug.ui.model.TCFNode;
import org.eclipse.tcf.protocol.Protocol;
import org.eclipse.tcf.util.TCFTask;

/**
 * Toggles enablement for reverse run control support.
 */
public class TCFReverseToggleCommand implements IReverseToggleHandler {

    public void canExecute(IEnabledStateRequest request) {
        request.setEnabled(true);
        request.done();
    }

    public boolean execute(final IDebugCommandRequest request) {
        if (request.getElements().length != 0 && request.getElements()[0] instanceof TCFNode) {
            final TCFNode node = (TCFNode)request.getElements()[0];
            Protocol.invokeLater(new Runnable() {
                public void run() {
                    boolean enabled = node.getModel().isReverseDebugEnabled();
                    node.getModel().setReverseDebugEnabled(!enabled);
                    request.done();
                };
            });
        } else {
            request.done();
        }
        return true;
    }

    public boolean toggleNeedsUpdating() {
        return true;
    }

    public boolean isReverseToggled(Object context) {
        if (context instanceof TCFNode) {
            final TCFNode node = (TCFNode)context;
            try {
                return new TCFTask<Boolean>() {
                    public void run() {
                        done(node.getModel().isReverseDebugEnabled());
                    };
                }.get();
            }
            catch (InterruptedException e) {
                Activator.log(e);
                return false;
            }
            catch (ExecutionException e) {
                Activator.log(e);
                return false;
            }
        }
        return false;
    }

}