ca.uvic.chisel.javasketch.ui.internal.presentation.commands.ToggleCompactLoopsHandler.java Source code

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Here is the source code for ca.uvic.chisel.javasketch.ui.internal.presentation.commands.ToggleCompactLoopsHandler.java

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/*******************************************************************************
 * Copyright (c) 2009 the CHISEL group and contributors.
 * 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:
 *     the CHISEL group - initial API and implementation
 *******************************************************************************/
package ca.uvic.chisel.javasketch.ui.internal.presentation.commands;

import java.util.Map;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.ui.commands.IElementUpdater;
import org.eclipse.ui.menus.UIElement;

import ca.uvic.chisel.javasketch.SketchPlugin;
import ca.uvic.chisel.javasketch.ui.internal.preferences.ISketchPluginPreferences;

/**
 * @author Del Myers
 *
 */
public class ToggleCompactLoopsHandler extends AbstractHandler implements IElementUpdater {

    /* (non-Javadoc)
     * @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent)
     */
    @Override
    public Object execute(ExecutionEvent event) throws ExecutionException {
        //just set the preference
        IPreferenceStore store = SketchPlugin.getDefault().getPreferenceStore();
        boolean compactGroups = store.getBoolean(ISketchPluginPreferences.COMPACT_LOOPS_PREFERENCE);
        store.setValue(ISketchPluginPreferences.COMPACT_LOOPS_PREFERENCE, !compactGroups);
        return null;
    }

    /* (non-Javadoc)
     * @see org.eclipse.ui.commands.IElementUpdater#updateElement(org.eclipse.ui.menus.UIElement, java.util.Map)
     */
    @SuppressWarnings("unchecked")
    @Override
    public void updateElement(UIElement element, Map parameters) {
        IPreferenceStore store = SketchPlugin.getDefault().getPreferenceStore();
        element.setChecked(store.getBoolean(ISketchPluginPreferences.COMPACT_LOOPS_PREFERENCE));
    }

}