//------------------------------------------------------------------------------
// Copyright (c) 2005, 2006 IBM Corporation and others.
// 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:
// IBM Corporation - initial implementation
//------------------------------------------------------------------------------
package org.eclipse.epf.authoring.gef.edit;

import org.eclipse.draw2d.Label;
import org.eclipse.draw2d.geometry.Rectangle;
import org.eclipse.gef.tools.CellEditorLocator;
import org.eclipse.jface.viewers.CellEditor;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.widgets.Text;

/**
 * Constraint for Text placing. 
 * @author Phong Nguyen Le
 * @since 1.0
 */
public class LabelTextCellEditorLocator implements CellEditorLocator {

	private Label label;

	/**
	 * Creates a new LabelTextCellEditorLocator for the given Label
	 * 
	 * @param label
	 *            the Label
	 */
	public LabelTextCellEditorLocator(Label label) {
		setLabel(label);
	}

	/**
	 * @see CellEditorLocator#relocate(org.eclipse.jface.viewers.CellEditor)
	 */
	public void relocate(CellEditor celleditor) {
		Text text = (Text) celleditor.getControl();
		Point pref = text.computeSize(-1, -1);
		Rectangle rect = label.getTextBounds().getCopy();
		label.translateToAbsolute(rect);
		text.setBounds(rect.x - 1, rect.y - 1, pref.x + 1, pref.y + 1);
	}

	/**
	 * Returns the Label figure.
	 * 
	 * @return the Label
	 */
	protected Label getLabel() {
		return label;
	}

	/**
	 * Sets the label.
	 * 
	 * @param label
	 *            The label to set
	 */
	protected void setLabel(Label label) {
		this.label = label;
	}

}