package awtExtExamples;
/*
 *
 * Copyright (c) 1995 Sun Microsystems, Inc. All Rights Reserved.
 *
 * Permission to use, copy, modify, and distribute this software
 * and its documentation for NON-COMMERCIAL purposes and without
 * fee is hereby granted provided that this copyright notice
 * appears in all copies. Please refer to the file "copyright.html"
 * for further important copyright and licensing information.
 *
 * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
 * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
 * TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR
 * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
 * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
 */

import java.awt.Event;
import java.awt.Panel;
import java.awt.Color;
import java.awt.Font;

import awtExt.* ;

/**
 * TextAreaTest demonstrates how to control keyboard input
 * in a TextArea. Two methods are registered with the TextArea's
 * eventDispatch object, one method for KEY_ACTION events and one
 * for KEY_PRESS events. The KEY_PRESS event handler method is a simple
 * filter that toggles the case of a letter. The KEY_ACTION event handler
 * method toggles the letters' case back if the funtcion key F5 is pressed.
 * Buttons on the bottom of the window control a few aspects of the
 * TextArea, such as clearing it, resetting it, and printing its content.
 * Note: selecting text programmatically is broken in this JDK release.
 */
public class TextAreaTest extends Frame {
    TextArea t1;
    TextArea t2;

    public TextAreaTest() {
     super("TextAreaTest");
     try {	
	add("North", t1 = new TextArea(4, 40));
	t1.setForeground(Color.blue);
	t1.setEditable(false);
	t1.setText( "Type a few words and press F5\n when finished...");
	add("Center", t2 = new TextArea(10, 40));
	t2.setFont(new Font("Helvetica", Font.BOLD, 18));
	
	/*
	** Register the two event handling methods
	*/
	t2.eventDispatch.KEY_ACTION = Callback.newRef(this,"keyActionMethod");
	t2.eventDispatch.KEY_PRESS  = Callback.newRef(this,"keyPressMethod" );

	Panel p = new Panel();
	p.add(new Button("clear", this, "clearMethod"));
	p.add(new Button("reset", this, "resetMethod"));
	p.add(new Button("select",this, "selectMethod"));
	p.add(new Button("print", this, "printMethod"));
	add("South", p);
	move(400, 200);
	pack();
	show();
     } catch( Exception e ) { e.printStackTrace() ; } ;
    }



    /**-----------------------------------------------
    * This method gets called back from the text area,
    * whenever a function key is pressed. If the function key
    * is F5, it'll toggle the letters case.
    **/
    public void keyActionMethod(CallbackInfo cbi ) {
	char functionKey = (char)cbi.evt.key;
	if( functionKey == Event.F5 ) {
		String s = t2.getText() ;
		StringBuffer sb = new StringBuffer() ;

		for( int i = 0 ; i < s.length() ; i++ ) {
			char key = s.charAt(i);
			if( key >= 'a' && key <= 'z') {
				key -= (int)' ' ;
			} else if (key >= 'A' && key <= 'Z') {
				key += (int)' ' ;
			} 
			sb.append( key );
		}
		t2.setText( sb.toString() ) ;
	}
	
    }



    /**-------------------------------------------------
    * This method gets called back from the text area,
    * whenever a  key is pressed. It is a simple filter
    * that toggles the letters case.
    **/
    public void keyPressMethod(CallbackInfo cbi ) {
	char key = (char)cbi.evt.key;

	if( key >= 'a' && key <= 'z') {
		cbi.evt.key -= (int)' ' ;
	} else if (key >= 'A' && key <= 'Z') {
		cbi.evt.key += (int)' ' ;
	} 
    }

 

    /**-------------------------------------------------
    * This method gets called back from the reset button...
    **/
    public void clearMethod(CallbackInfo cbi ) {
	t1.setText("");
	t2.setText("");
    }


    /**-------------------------------------------------
    * This method gets called back from the reset button...
    **/
   public void resetMethod(CallbackInfo cbi ) {
	t2.setText("TRY AGAIN....");	
    }


    /**-------------------------------------------------
    * This method gets called back from the select button...
    **/
    public void selectMethod(CallbackInfo cbi ) {
	t2.setText( "Sorry! select is broken in this\nversion of awt..." ) ;
	t2.selectAll();
    }
  

    /**-------------------------------------------------
    * This method gets called back from the print button...
    **/
    public void printMethod(CallbackInfo cbi ) {
	System.out.println("-- values --");
	System.out.println("text=" + t1.getText());
	System.out.println("text=" + t2.getText());
    }

    public static void main(String args[]) {
	new TextAreaTest();
    }
}