/*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2002 The Apache Software Foundation.  All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in
*    the documentation and/or other materials provided with the
*    distribution.
*
* 3. The end-user documentation included with the redistribution, if
*    any, must include the following acknowlegement:
*       "This product includes software developed by the
*        Apache Software Foundation (http://www.apache.org/)."
*    Alternately, this acknowlegement may appear in the software itself,
*    if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Ant", and "Apache Software
*    Foundation" must not be used to endorse or promote products derived
*    from this software without prior written permission. For written
*    permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
*    nor may "Apache" appear in their names without prior written
*    permission of the Apache Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation.  For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/

package ise.antelope.common;

import java.awt.Component;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Enumeration;
import javax.swing.Icon;
import javax.swing.JOptionPane;

import org.apache.tools.ant.input.InputHandler;
import org.apache.tools.ant.input.InputRequest;
import org.apache.tools.ant.input.MultipleChoiceInputRequest;
import org.apache.tools.ant.BuildException;

/**
 * Prompts for user input using a JOptionPane. Developed for use with
 * Antelope.
 *
 * @author <a href="mailto:danson@germane-software.com">Dale Anson</a>
 * @version $Revision: 6 $
 * @since Ant 1.5
 */
public class AntInputHandler implements InputHandler {

   private Component parent = null;

   public AntInputHandler() {}

   /**
    * @param parent the parent component to display the input dialog.
    */
   public AntInputHandler( Component parent ) {
      this.parent = parent;
   }

   /**
    * Prompts and requests input.  May loop until a valid input has
    * been entered.
    */
   public void handleInput( InputRequest request ) throws BuildException {

      if ( request instanceof MultipleChoiceInputRequest ) {
         String prompt = request.getPrompt();
         String title = "Select Input";
         int optionType = JOptionPane.YES_NO_OPTION;
         int messageType = JOptionPane.QUESTION_MESSAGE;
         Icon icon = null;
         Object[] choices = ( ( MultipleChoiceInputRequest ) request ).getChoices().toArray();
         Object initialChoice = null;
         do {
            Object input = JOptionPane.showInputDialog( parent, prompt,
                  title, optionType, icon, choices, initialChoice );
            if ( input == null ) {
               return ;
               //throw new BuildException("User cancelled.");
            }
            request.setInput( input.toString() );
         }
         while ( !request.isInputValid() );

      }
      else {
         do {
            String input = JOptionPane.showInputDialog( parent, request.getPrompt() );
            if ( input == null ) {
               return ;
               //throw new BuildException("User cancelled.");
            }
            request.setInput( input );
         }
         while ( !request.isInputValid() );
      }
   }

}
