/*
 * Copyright (c) 2011, grossmann
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * * Neither the name of the jo-widgets.org nor the
 *   names of its contributors may be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL jo-widgets.org BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */

package org.jowidgets.spi.impl.swt.common.widgets;

import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.ToolItem;
import org.jowidgets.common.types.Position;
import org.jowidgets.common.widgets.controller.IPopupDetectionListener;
import org.jowidgets.spi.impl.controller.PopupDetectionObservable;
import org.jowidgets.spi.impl.swt.common.image.SwtImageRegistry;
import org.jowidgets.spi.widgets.IToolBarPopupButtonSpi;

public class ToolBarPopupButtonImpl extends ToolBarButtonImpl implements IToolBarPopupButtonSpi {

    private final PopupDetectionObservable popupDetectionObservable;

    public ToolBarPopupButtonImpl(final ToolItem item, final SwtImageRegistry imageRegistry) {
        super(item, imageRegistry);
        this.popupDetectionObservable = new PopupDetectionObservable();

        item.addListener(SWT.Selection, new Listener() {
            @Override
            public void handleEvent(final Event event) {
                if (event.detail == SWT.ARROW) {
                    final Rectangle bounds = item.getBounds();
                    final Point point = new Point(bounds.x, bounds.y + bounds.height);
                    popupDetectionObservable.firePopupDetected(new Position(point.x, point.y));
                }
            }
        });

    }

    @Override
    public void addPopupDetectionListener(final IPopupDetectionListener listener) {
        popupDetectionObservable.addPopupDetectionListener(listener);
    }

    @Override
    public void removePopupDetectionListener(final IPopupDetectionListener listener) {
        popupDetectionObservable.removePopupDetectionListener(listener);
    }

}