package org.jtheque.utils.ui;

 import javax.swing.JComponent;

 /*

  * This file is part of JTheque.

  *            

  * JTheque is free software: you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation, either version 3 of the License. 

  *

  * JTheque 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 General Public License for more details.

  *

  * You should have received a copy of the GNU General Public License

  * along with JTheque.  If not, see <http://www.gnu.org/licenses/>.

  */

 /**

  * A tracker for the size of a <code>JComponent</code>

  *

  * @author Baptiste Wicht

  */

 public final class SizeTracker {

     private int width = -1;

     private int height = -1;

     private final JComponent component;

     /**

      * Construct a new SizeTracker.

      *

      * @param c The component to track the sizes.

      */

     public SizeTracker(JComponent c) {

         super();

         component = c;

     }

     /**

      * Update the cached size.

      */

     public void updateSize() {

         width = component.getWidth();

         height = component.getHeight();

     }

     /**

      * Indicate if the size has changed from the last update.

      *

      * @return <code>true</code> if the size has changed else <code>false</code>.

      */

     public boolean hasSizeChanged() {

         return width != component.getWidth() || height != component.getHeight();

     }

 }