driver.java

Java程序设计(美) David D. Riley著 机械工业出版社 书籍配套 代码

import java.awt.*;
/**	Shuffle TetxFields Program  (Figure 6.34)
 *	Author: David Riley
 */
public class Driver extends ThreeButtons {
	private ShuffleFields fields;

	/**	post:	A window is displays three TextFields and directions. */
	public Driver()   {
		ThreeButtonFrame  theWin;
		theWin = new ThreeButtonFrame("Text Shuffler");
		theWin.setLayout(null);
		fields = new ShuffleFields(theWin);
		theWin.repaint();
	}

	/** post:	the field content has been rotated upward */
	public void leftAction()   {
		fields.rotateUp();
	}
	
	/** post:	The top and bottom fields have a copy of the content of the
	 *			middle field @pre 
	 */
	public void midAction()   {
		fields.copyMiddle();
	}
	
	/** post:	the field content has been rotated downward */
	public void rightAction()   {
		fields.rotateDown();
	}
}