LabelFigure.java

/** 
 * This file is protected by Copyright. 
 * Please refer to the COPYRIGHT file distributed with this source distribution.
 * 
 * This file is part of REDHAWK IDE.
 * 
 * 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.
 *
 */
package gov.redhawk.sca.sad.diagram.palette;

import org.eclipse.draw2d.ColorConstants;
import org.eclipse.draw2d.MarginBorder;
import org.eclipse.draw2d.RectangleFigure;
import org.eclipse.draw2d.StackLayout;
import org.eclipse.draw2d.text.FlowPage;
import org.eclipse.draw2d.text.ParagraphTextLayout;
import org.eclipse.draw2d.text.TextFlow;

/**
 * @since 3.2
 */
public class LabelFigure extends RectangleFigure {

	/** The inner TextFlow **/
	private TextFlow textFlow;
	private boolean empty;

	/**
	 * Creates a new LabelFigure with a MarginBorder that is the given size and
	 * a FlowPage containing a TextFlow with the style WORD_WRAP_SOFT.
	 * 
	 * @param borderSize
	 *            the size of the MarginBorder
	 */
	public LabelFigure() {
		setBorder(new MarginBorder(5, 5, 5, 5));
		FlowPage flowPage = new FlowPage();

		textFlow = new TextFlow();

		textFlow.setLayoutManager(new ParagraphTextLayout(textFlow, ParagraphTextLayout.WORD_WRAP_SOFT));

		flowPage.add(textFlow);

		setLayoutManager(new StackLayout());
		add(flowPage);

		setBackgroundColor(ColorConstants.white);
		setForegroundColor(ColorConstants.lightGray);
	}

	/**
	 * Returns the text inside the TextFlow.
	 * 
	 * @return the text flow inside the text.
	 */
	public String getText() {
		if (empty) {
			return "";
		} else {
			return textFlow.getText();
		}
	}

	/**
	 * Sets the text of the TextFlow to the given value.
	 * 
	 * @param newText
	 *            the new text value.
	 */
	public void setText(String newText) {
		if (newText == null || newText.isEmpty()) {
			this.empty = true;
			newText = "type filter text";
			textFlow.setForegroundColor(ColorConstants.lightGray);
		} else {
			this.empty = false;
			textFlow.setForegroundColor(ColorConstants.black);
		}
		textFlow.setText(newText);
	}

}