ToggleEditorSynchronization.java

package org.projectusus.ui.dependencygraph.handlers;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.ui.handlers.HandlerUtil;
import org.projectusus.ui.dependencygraph.common.DependencyGraphView;

public class ToggleEditorSynchronization extends AbstractHandler {

    public Object execute( ExecutionEvent event ) throws ExecutionException {
        DependencyGraphView dependencyGraphView = (DependencyGraphView)HandlerUtil.getActivePart( event );
        boolean oldState = HandlerUtil.toggleCommandState( event.getCommand() );
        dependencyGraphView.registerEditorSynchronizationListener( !oldState );
        return null;
    }

}