/*
Research Project:   Graphical Database for Category Theory
                    J. Bradbury, Dr. R. Rosebrugh, I. Rutherford
                    Mount Allison University 2001
File:               EndomorphismFrame.java
Description:	      This file is displayed when the user selects the "Endomorphism
                    Limit". It allows the user to select a new maximum order of
                    endomorphism to replace the default of 2
*/

//import statements
import java.awt.*;
import java.awt.event.*;

public class EndomorphismFrame extends Frame {

  Category c = new Category();
  CategoryList l = new CategoryList();
  int check_enter = 0;

  //Objects in the Graphical User Interface(GUI)
  Button exit = new Button();
  Panel button_panel = new Panel();
  BorderLayout borderLayout1 = new BorderLayout();
  Button okButton = new Button();
  Button cancelButton = new Button();
  CheckboxGroup orderGroup = new CheckboxGroup();
  Checkbox orderOne = new Checkbox("Order 10", orderGroup, false);
  Checkbox orderOther = new Checkbox("Order = ", orderGroup, false);
  Checkbox orderTwo = new Checkbox("Order 20", orderGroup, false);
  Checkbox orderThree = new Checkbox("Order 30", orderGroup, false);
  TextField orderField = new TextField();
  MainWindow ed;
  Checkbox orderFour = new Checkbox("Order 40", orderGroup, false);
  Checkbox orderFive = new Checkbox("Order 50", orderGroup, false);
  Label label1 = new Label();
  Label label2 = new Label();
  Label titleLabel = new Label();
  GridBagLayout gridBagLayout1 = new GridBagLayout();
  GBConstraintsEditor g = new GBConstraintsEditor();

  public EndomorphismFrame(MainWindow edit)
  //Default Constructor with the list of categories as a parameter
  {
    ed = edit;
    ed.enableMenus(false);
    try  {
      jbInit();
    }
    catch (Exception e) {
      e.printStackTrace();
    }
  }

  public boolean handleEvent(Event e)
  {
    if (e.id == Event.WINDOW_DESTROY)
    {
      ed.enableMenus(true);
      hide();            //hide frame
      dispose();         //free resources
      return true;
    }
    else if (e.key == Event.ENTER)
    {
      if (check_enter == 0)
        check_enter++;
      else
      {
        ed.enableMenus(true);
        hide();            //hide frame
        dispose();         //free resources
      }
      return true;
    }
    else if (e.target instanceof Choice)
    {
      return (true);
    }
    else
      return super.handleEvent(e);
  }

 public boolean action(Event e, Object o)
 {
  if ((e.target == exit) || (e.key == Event.ENTER))
  {
    ed.enableMenus(true);
    hide();            //hide frame
    dispose();         //free resources
    return true;
  }
  return false;
 }


 private void jbInit() throws Exception
 //This function intializes the GUI
 {
    this.setTitle("GDCT: Endomorphism Order");
    this.setBackground(new Color(192,192,192));
    this.setSize(new Dimension(260, 300));
    okButton.setLabel("OK");

    okButton.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        okButton_actionPerformed(e);
      }
    });
    cancelButton.setLabel("Cancel");
    orderField.setBackground(Color.white);
    cancelButton.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        cancelButton_actionPerformed(e);
      }
    });
    label1.setText("Current Order: " + ed.ini.getMaxLoop());
    label2.setText("New Order:");
    titleLabel.setText("Max Order of Endomorphism:");
    this.setLayout(gridBagLayout1);
    this.add(okButton, g.getConstraints(0, 8, 2, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(22, 10, 12, 0), 69, 8));
    this.add(cancelButton, g.getConstraints(2, 8, 5, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(22, 15, 12, 13), 53, 8));
    this.add(titleLabel, g.getConstraints(0, 0, 5, 1, 0.0, 0.0
            ,GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(8, 10, 0, 0), 0, 0));
    this.add(label1, g.getConstraints(0, 1, 5, 1, 0.0, 0.0
            ,GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(0, 10, 0, 0), 84, 0));
    this.add(label2, g.getConstraints(0, 2, 1, 1, 0.0, 0.0
            ,GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(0, 10, 0, 0), 0, 0));
    this.add(orderOne, g.getConstraints(1, 2, 3, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
    this.add(orderTwo, g.getConstraints(1, 3, 3, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
    this.add(orderThree, g.getConstraints(1, 4, 3, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
    this.add(orderFour, g.getConstraints(1, 5, 3, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
    this.add(orderFive, g.getConstraints(1, 6, 3, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0));
    this.add(orderOther, g.getConstraints(1, 7, 2, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), -9, 0));
    this.add(orderField, g.getConstraints(3, 7, 3, 1, 1.0, 0.0
            ,GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 14, 0));
    selectTrueBox();
 }

  void selectTrueBox()
  //Determines which check box is true when window is opened
  {
    if (ed.ini.getMaxLoop() == 10)
      orderGroup.setSelectedCheckbox(orderOne);
    else if (ed.ini.getMaxLoop() == 20)
      orderGroup.setSelectedCheckbox(orderTwo);
    else if (ed.ini.getMaxLoop() == 30)
      orderGroup.setSelectedCheckbox(orderThree);
    else if (ed.ini.getMaxLoop() == 40)
      orderGroup.setSelectedCheckbox(orderFour);
    else if (ed.ini.getMaxLoop() == 50)
      orderGroup.setSelectedCheckbox(orderFive);
    else
    {
      orderGroup.setSelectedCheckbox(orderOther);
      orderField.setText("" + ed.ini.getMaxLoop());
    }
  }

  void okButton_actionPerformed(ActionEvent e)
  //Function called when OK button is pressed
  {
    Checkbox selected = orderGroup.getCurrent();
    String label = selected.getLabel();
    if(label.equals("Order 10"))
      ed.ini.setMaxLoop(10);
    else if(label.equals("Order 20"))
      ed.ini.setMaxLoop(20);
    else if(label.equals("Order 30"))
      ed.ini.setMaxLoop(30);
    else if(label.equals("Order 40"))
      ed.ini.setMaxLoop(40);
    else if(label.equals("Order 50"))
      ed.ini.setMaxLoop(50);
    else
    {
      try
      {
        ed.ini.setMaxLoop(Integer.parseInt(orderField.getText()));
      }
      catch (NumberFormatException e1)
      {
        new MessageDialog(this, "Error", "Endomorphism value must be an integer", true);
      }
    }
    ed.enableMenus(true);
    hide();
    dispose();
  }

  void cancelButton_actionPerformed(ActionEvent e)
  {
    ed.enableMenus(true);
    hide();
    dispose();
  }

}