// CS184 Project 1
// Raul 'Joni' Chu - 12782756 - cs184-bq
// Yuan Kui Shen   - 12940472 - cs184-ac
// File: GUIWindow.java

// Class to implement a Java pop-up window which lets the user select what
// type of atom to add the the VRML world. Types are represented as 
// ints (1-9). Actually communication with the world is handled with the 
// 'Talker' class since we can only extend one class and need to do so
// with the Frame class in order to get a separate window.

import java.awt.*;
import java.awt.event.*;
import vrml.*;
import vrml.node.*;
import vrml.field.*;
import java.io.*;
import java.util.*;

public class GUIWindow extends Frame implements ActionListener, ItemListener, EventListener {
  boolean inAnApplet = true;
  private Choice Moles;
  private Label BondLabel;
  private String Bonds = "Single";
  private String MoleculeName = "Hydrogen";
  private int atom_type = 1;

// Our pop-up window object
  public GUIWindow() {
    Panel bottomPanel = new Panel();
    Panel centerPanel = new Panel();
    setLayout(new BorderLayout());
    bottomPanel.add(new Label("Molecule Type:"));
    Choice Moles = new Choice();
    Moles.add("Hydrogen");
    Moles.add("Oxygen - One Bond Site");
    Moles.add("Oxygen - Two Bond Sites");
    Moles.add("Carbon - Two Bond Site");
    Moles.add("Carbon - Three Bond Sites");
    Moles.add("Carbon - Four Bond Sites");
    Moles.add("Nitrogen - One Bond Site");
    Moles.add("Nitrogen - Two Bond Sites");
    Moles.add("Nitrogen - Three Bond Sites");
    bottomPanel.add(Moles);
    Moles.addItemListener(this);
    add("North", bottomPanel);
    add("South", centerPanel);
  }

// Methods to keep JDK 1.1.x happy - why did they change the API on me like this?
  public void initialize() {
  }

  public void windowClosed(WindowEvent event) {
  }

  public void windowDeiconified(WindowEvent event) {
  }

  public void windowIconified(WindowEvent event) {
  }

  public void windowActivated(WindowEvent event) {
  }

  public void windowDeactivated(WindowEvent event) {
  }

  public void windowOpened(WindowEvent event) {
  }

  public void windowClosing(WindowEvent event) {
    if (inAnApplet) {
      dispose();
    }
    else {
      System.exit(0);
    }
  }

// When the user selects a type, we listen
  public void itemStateChanged(ItemEvent event) {
	Object source = event.getSource();
	String name = ((Choice)source).getSelectedItem();
	MoleculeName = name;
	if (MoleculeName == "Hydrogen") {
	  atom_type = 1;
	  System.out.println("1");
	}
	else if (MoleculeName == "Oxygen - One Bond Site") {
	  atom_type = 3;
	  System.out.println("3");
	}
	else if (MoleculeName == "Oxygen - Two Bond Sites") {
	  atom_type = 2;
	  System.out.println("2");
	}
	else if (MoleculeName == "Carbon - Two Bond Site") {
	  atom_type = 6;
	  System.out.println("6");
	}
	else if (MoleculeName == "Carbon - Three Bond Sites") {
	  atom_type = 5;
	  System.out.println("5");
	}
	else if (MoleculeName == "Carbon - Four Bond Sites") {
	  atom_type = 4;
	  System.out.println("4");
	}
	else if (MoleculeName == "Nitrogen - One Bond Site") {
	  atom_type = 9;
	  System.out.println("9");
	}
	else if (MoleculeName == "Nitrogen - Two Bond Sites") {
	  atom_type = 8;
	  System.out.println("8");
	}
	else {
	  atom_type = 7;
	  System.out.println("7");
	}
   }

	// Used by Talker class to get the user's selection
	public int get_type() {
		return atom_type;
	}

	public void process_Event(EventObject event) {
		String EventName = (event.getSource()).toString();
		System.out.println(EventName);
		show_controls(true);
	}

	public void show_controls(boolean show_them) {
		if (show_them) {
			this.setVisible(true);
		}
	}

	public void actionPerformed(ActionEvent event) {
  	}

}