EditableLabel.java

/*
 * JBoss, Home of Professional Open Source
 * Copyright 2005, JBoss Inc., and individual contributors as indicated
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.hibernate.eclipse.graph.figures;

import org.eclipse.draw2d.ColorConstants;
import org.eclipse.draw2d.Graphics;
import org.eclipse.draw2d.Label;
import org.eclipse.draw2d.PositionConstants;
import org.eclipse.draw2d.geometry.Insets;
import org.eclipse.draw2d.geometry.Rectangle;

/**
 * A customized Label based on the label used in the flow example. 
 * Primary selection is denoted by highlight and focus rectangle. 
 * Normal selection is denoted by highlight only. Borrowed from the Flow Editor example
 */
public class EditableLabel extends Label
{

	private boolean selected;
	
	public EditableLabel(String text)
	{
		super(text);
		setLabelAlignment(PositionConstants.LEFT);
	}
	
	private Rectangle getSelectionRectangle()
	{
		Rectangle bounds = getTextBounds().getCopy();
		bounds.expand(new Insets(2, 2, 0, 0));
		translateToParent(bounds);
		bounds.intersect(getBounds());
		return bounds;
	}

	/**
	 * paints figure differently depends on the whether the figure has focus or is selected 
	 */
	protected void paintFigure(Graphics graphics)
	{
		if (selected)
		{
			graphics.pushState();
			graphics.setBackgroundColor(ColorConstants.menuBackgroundSelected);
			graphics.fillRectangle(getSelectionRectangle());
			graphics.popState();
			graphics.setForegroundColor(ColorConstants.white);
		}
		super.paintFigure(graphics);
	}

	/**
	 * Sets the selection state of this SimpleActivityLabel
	 * 
	 * @param b
	 *            true will cause the label to appear selected
	 */
	public void setSelected(boolean b)
	{
		selected = b;
		repaint();
	}


}