/*
   Chapter 5:  Reserve a Party Room
  Programmer:  Brad Shedd
   Date:       June 5, 2006
   Filename:   Reservations.java
   Purpose:    This program creates a windowed application to reserve a party room. It calls an external class named Rooms.
*/

import javax.swing.JOptionPane;
import java.awt.*;
import java.awt.event.*;

public class Reservations extends Frame implements ActionListener
{
   Color lightRed = new Color(255, 90, 90);
   Color lightGreen = new Color(140, 215, 40);
  
   Rooms room = new Rooms(5,3);
  
   Panel roomPanel = new Panel();
      TextArea roomDisplay[] = new TextArea[9];
     
  Panel buttonPanel = new Panel();
      Button bookButton = new Button("Book Room");
     
   Panel inputPanel = new Panel();
      Label custNameLabel = new Label("Name:");
      TextField nameField = new TextField(15);
      Label custPhoneLabel = new Label("Phone number:");
      TextField phoneField = new TextField(15);
      Label numLabel = new Label("Number in party:");
      Choice numberOfGuests = new Choice();
      CheckboxGroup options = new CheckboxGroup();
         Checkbox nonSmoking = new Checkbox("Nonsmoking",false,options);
         Checkbox smoking = new Checkbox("Smoking",false,options);
         Checkbox hidden = new Checkbox("",true,options);
           
   public Reservations()
   {
      //set Layouts for frame and three panels
      this.setLayout(new BorderLayout());
         roomPanel.setLayout(new GridLayout(2,4,10,10));
         buttonPanel.setLayout(new FlowLayout());
         inputPanel.setLayout(new FlowLayout());
        
      //add components to room panel
      for (int i=1; i<9; i++)
      {
         roomDisplay[i] = new TextArea(null,3,5,3);
         if (i<6)
            roomDisplay[i].setText("Room " + i + " Nonsmoking");
         else
            roomDisplay[i].setText("Room " + i + " Smoking");
         roomDisplay[i].setEditable(false);
         roomDisplay[i].setBackground(lightGreen);
         roomPanel.add(roomDisplay[i]);
      }
     
      //add components to button panel
      buttonPanel.add(bookButton);
     
      //add components to input panel
      inputPanel.add(custNameLabel);
      inputPanel.add(nameField);
     inputPanel.add(custPhoneLabel);
      inputPanel.add(phoneField);
      inputPanel.add(numLabel);
      inputPanel.add(numberOfGuests);
         for(int i = 8; i<=20; i++)
            numberOfGuests.add(String.valueOf(i));
      inputPanel.add(nonSmoking);
      inputPanel.add(smoking);
     
      //add panels to frame
      add(buttonPanel, BorderLayout.SOUTH);
      add(inputPanel, BorderLayout.CENTER);
      add(roomPanel, BorderLayout.NORTH);
     
      bookButton.addActionListener(this);
     
      //Overriding the windowClosing() method will allow the user to click the Close button
      addWindowListener(
         new WindowAdapter()
         {
            public void windowClosing(WindowEvent e)
            {
               System.exit(0);
            }
         }
      );
   } //end of constructor method
  
   public static void main(String[] args)
   {
      Reservations f = new Reservations();
      f.setBounds(200,200,600,300);
      f.setTitle("Reserve a Party Room");
      f.setVisible(true);
   } //end of main
  
   public void actionPerformed(ActionEvent e)
   {
      if (hidden.getState())
      {
         JOptionPane.showMessageDialog(null,"You must select Nonsmoking or Smoking.","Error", JOptionPane.ERROR_MESSAGE);
      }
      else
      {
         int available = room.bookRoom(smoking.getState());
        
        if (available > 0) //room is available
         {
            roomDisplay[available].setBackground(lightRed); //display room as occupied
            roomDisplay[available].setText(
                                    roomDisplay[available].getText() +
                                    "\n" +
                                    nameField.getText() +
                                    " "+
                                    phoneField.getText() +
                                    "\nparty of " +
                                    numberOfGuests.getSelectedItem()
                                 ); //display info in room
            clearFields();
         }
         else //room is not available
         {
            if (smoking.getState())
               JOptionPane.showMessageDialog(null,"Smoking is full.","Error",JOptionPane.INFORMATION_MESSAGE);
            else
               JOptionPane.showMessageDialog(null,"Nonsmoking is full.","Error",JOptionPane.INFORMATION_MESSAGE);
            hidden.setState(true);
         } //end of else block that checks the available room number
      } //end of else block that checks the state of the hidden option button
   } // end of actionPerformed() method
  
   //reset the text fields and chice component
   void clearFields()
   {
      nameField.setText("");
      phoneField.setText("");
      numberOfGuests.select(0);
      nameField.requestFocus();
      hidden.setState(true);
   } //end of clearFeilds() method
  
} //end of Reservations class   

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