/*
 * Copyright (c) 2006 Stiftung Deutsches Elektronen-Synchroton,
 * Member of the Helmholtz Association, (DESY), HAMBURG, GERMANY.
 *
 * THIS SOFTWARE IS PROVIDED UNDER THIS LICENSE ON AN "../AS IS" BASIS.
 * WITHOUT WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED
 * TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR PARTICULAR PURPOSE AND
 * NON-INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
 * FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. SHOULD THE SOFTWARE PROVE DEFECTIVE
 * IN ANY RESPECT, THE USER ASSUMES THE COST OF ANY NECESSARY SERVICING, REPAIR OR
 * CORRECTION. THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE.
 * NO USE OF ANY SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER THIS DISCLAIMER.
 * DESY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
 * OR MODIFICATIONS.
 * THE FULL LICENSE SPECIFYING FOR THE SOFTWARE THE REDISTRIBUTION, MODIFICATION,
 * USAGE AND OTHER RIGHTS AND OBLIGATIONS IS INCLUDED WITH THE DISTRIBUTION OF THIS
 * PROJECT IN THE FILE LICENSE.HTML. IF THE LICENSE IS NOT INCLUDED YOU MAY FIND A COPY
 * AT HTTP://WWW.DESY.DE/LEGAL/LICENSE.HTM
 */
package org.csstudio.sds.components.ui.internal.figures;

import org.csstudio.sds.ui.figures.CrossedOutAdapter;
import org.csstudio.sds.ui.figures.ICrossedFigure;
import org.csstudio.sds.ui.figures.IRhombusEquippedWidget;
import org.csstudio.sds.ui.figures.ITextFigure;
import org.csstudio.sds.ui.figures.RhombusAdapter;
import org.csstudio.ui.util.CustomMediaFactory;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.draw2d.Button;
import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.Label;
import org.eclipse.draw2d.PositionConstants;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Font;

/**
 * A action button figure.
 *
 * @author Sven Wende
 *
 */
public final class RefreshableActionButtonFigure extends Button implements
		IAdaptable, ITextFigure {

	/**
	 * Default label font.
	 */
	public static final Font FONT = CustomMediaFactory.getInstance().getFont(
			"Arial", 8, SWT.NONE); //$NON-NLS-1$

	/**
	 * The Label for the Button.
	 */
	private final Label _label;

	/**
	 * An Array, which contains the PositionConstants for Center, Top, Bottom, Left, Right.
	 */
	private final int[] _alignments = new int[] {PositionConstants.CENTER, PositionConstants.TOP, PositionConstants.BOTTOM, PositionConstants.LEFT, PositionConstants.RIGHT};

    private CrossedOutAdapter _crossedOutAdapter;

    private RhombusAdapter _rhombusAdapter;

	/**
	 * Constructor.
	 */
	public RefreshableActionButtonFigure() {
		_label = new Label("");
		setContents(_label);
		setFont(FONT);
	}

	@Override
	public void paint(final Graphics graphics) {
	    super.paint(graphics);
       _crossedOutAdapter.paint(graphics);
       _rhombusAdapter.paint(graphics);
	}

	/**
	 * Sets the text for the Button.
	 * @param s
	 * 			The text for the button
	 */
	@Override
	public void setTextValue(final String s) {
		_label.setText(s);
	}

	public void setPressed(final boolean pressed){
	    getModel().setPressed(pressed);
	}

	/**
	 * Sets the alignment of the buttons text.
	 * The parameter is a {@link PositionConstants} (LEFT, RIGHT, TOP, CENTER, BOTTOM)
	 * @param alignment
	 * 			The alignment for the text
	 */
	public void setTextAlignment(final int alignment) {
		if ((alignment>=0) && (alignment<_alignments.length)) {
			if ((_alignments[alignment]==PositionConstants.LEFT) || (_alignments[alignment]==PositionConstants.RIGHT)) {
				_label.setTextPlacement(PositionConstants.NORTH);
			} else {
				_label.setTextPlacement(PositionConstants.EAST);
			}
			_label.setTextAlignment(_alignments[alignment]);
		}
	}

	/**
	 * Set the style of the Button.
	 * @param style false = Push, true=Toggle.
	 */
	public void setStyle(final boolean style){
	    if(style){
	        setStyle(Button.STYLE_TOGGLE);
	    }else{
	        setStyle(Button.STYLE_BUTTON);
	    }

	}

	/**
	 * {@inheritDoc}
	 */
	@Override
	@SuppressWarnings("rawtypes")
	public Object getAdapter(final Class adapter) {
	    if(adapter == ICrossedFigure.class) {
            if(_crossedOutAdapter==null) {
                _crossedOutAdapter = new CrossedOutAdapter(this);
            }
            return _crossedOutAdapter;
        } else if(adapter == IRhombusEquippedWidget.class) {
            if(_rhombusAdapter==null) {
                _rhombusAdapter = new RhombusAdapter(this);
            }
            return _rhombusAdapter;
        }
		return null;
	}

}