/*
Research Project:   Graphical Database for Category Theory
                    J. Bradbury, Dr. R. Rosebrugh, I. Rutherford
                    Mount Allison University 2001
File:               SettingsGraphical.java
Description:	      This file creates a frame that allows the user to change
                    certain graphical settings in the display of a category
*/

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

public class SettingsGraphical extends Dialog {//used to be frame (mkgrvs) July 9

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

  //Objects in the Graphical User Interface(GUI)
  Button exit = new Button();
  Panel button_panel = new Panel();
  BorderLayout borderLayout1 = new BorderLayout();
  Button okButton = new Button();
  CheckboxGroup checkboxGroup1 = new CheckboxGroup();
  Checkbox showControls = new Checkbox();
  CheckboxGroup scaleGroup = new CheckboxGroup();
  CheckboxGroup planeGroup = new CheckboxGroup();
  Checkbox setFont = new Checkbox();
  Checkbox scaleDecrease = new Checkbox("", scaleGroup, false);
  Checkbox scaleOther = new Checkbox("", scaleGroup, false);
  Checkbox scaleIncrease = new Checkbox("", scaleGroup, false);
  Checkbox scaleOne = new Checkbox("", scaleGroup, false);
  TextField scaleField = new TextField();
  Checkbox centerOffset = new Checkbox();
  MainWindow ed;
  Panel panel1 = new Panel();
  Label label1 = new Label();
  Panel panel2 = new Panel();
  Label label2 = new Label();
  Panel panel3 = new Panel();
  Label label3 = new Label();
  GridBagLayout gridBagLayout1 = new GridBagLayout();
  GridBagLayout gridBagLayout2 = new GridBagLayout();
  GridBagLayout gridBagLayout3 = new GridBagLayout();
  GridBagLayout gridBagLayout4 = new GridBagLayout();
  GBConstraintsEditor g = new GBConstraintsEditor();

  public SettingsGraphical(MainWindow edit)
  //Default Constructor with the parent frame as a parameter
  {
    super(edit);
    ed = edit;
    ed.enableMenus(false);
    try  {
      jbInit();
    }
    catch (Exception e) {
      e.printStackTrace();
    }
  }

  public boolean handleEvent(Event e)
  {
    if ((e.id == Event.WINDOW_DESTROY) || (e.id == Event.ACTION_EVENT))
    {
      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;
    }
    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: Graphical Settings");
    this.setBackground(new Color(192,192,192));
    okButton.setLabel("OK");
    okButton.setLabel("OK");
    this.setLayout(gridBagLayout4);
    centerOffset.setLabel("Center Offset");
    panel1.setBackground(new Color(164, 164, 164));
    label1.setText("Viewing Offset:");
    panel2.setBackground(new Color(164, 164, 164));
    panel2.setLayout(gridBagLayout3);
    label2.setText("Display:");
    panel3.setBackground(new Color(164, 164, 164));
    panel3.setLayout(gridBagLayout1);
    label3.setText("Scale:");
    panel1.setLayout(gridBagLayout2);
    centerOffset.addItemListener(new java.awt.event.ItemListener() {
      public void itemStateChanged(ItemEvent e) {
        centerOffset_itemStateChanged(e);
      }
    });
    scaleField.setBackground(Color.white);
    this.add(okButton, g.getConstraints(1, 2, 1, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(6, 7, 11, 8), 128, 8));
    this.add(panel1, g.getConstraints(1, 0, 1, 1, 1.0, 1.0
            ,GridBagConstraints.CENTER, GridBagConstraints.BOTH, new Insets(9, 9, 0, 9), 0, 2));
    panel1.add(label1, g.getConstraints(0, 0, 1, 1, 0.0, 0.0
            ,GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(3, 2, 0, 0), 0, 0));
    panel1.add(centerOffset, g.getConstraints(0, 1, 2, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 35, 8, 19), 0, 0));
    this.add(panel2, g.getConstraints(1, 1, 1, 1, 1.0, 1.0
            ,GridBagConstraints.CENTER, GridBagConstraints.BOTH, new Insets(7, 9, 0, 7), 0, 1));
    panel2.add(label2, g.getConstraints(0, 0, 1, 1, 0.0, 0.0
            ,GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(5, 5, 0, 0), 0, 0));
    panel2.add(showControls, g.getConstraints(0, 1, 3, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 34, 0, 13), 0, 0));
    panel2.add(setFont, g.getConstraints(0, 2, 2, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 33, 2, 0), 0, 0));
    this.add(panel3, g.getConstraints(0, 0, 1, 2, 1.0, 1.0
            ,GridBagConstraints.CENTER, GridBagConstraints.BOTH, new Insets(9, 6, 0, 0), -8, 4));
    panel3.add(label3, g.getConstraints(0, 0, 1, 1, 0.0, 0.0
            ,GridBagConstraints.WEST, GridBagConstraints.NONE, new Insets(5, 7, 0, 0), 0, 0));
    panel3.add(scaleDecrease, g.getConstraints(0, 1, 3, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 24, 0, 0), 0, 0));
    panel3.add(scaleOne, g.getConstraints(0, 2, 4, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 23, 0, 0), 0, 0));
    panel3.add(scaleIncrease, g.getConstraints(0, 3, 3, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 23, 0, 0), 0, 0));
    panel3.add(scaleOther, g.getConstraints(0, 4, 2, 1, 0.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 24, 17, 0), -9, 0));
    panel3.add(scaleField, g.getConstraints(2, 4, 3, 1, 1.0, 0.0
            ,GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 19, 18), 19, 0));
    scaleOne.setLabel("Scale = 1");
    scaleOne.addItemListener(new java.awt.event.ItemListener() {
      public void itemStateChanged(ItemEvent e) {
        scaleOne_itemStateChanged(e);
      }
    });
    scaleIncrease.setLabel("Scale*2");
    scaleIncrease.addItemListener(new java.awt.event.ItemListener() {
      public void itemStateChanged(ItemEvent e) {
        scaleIncrease_itemStateChanged(e);
      }
    });
    scaleOther.setLabel("Scale = ");
    scaleOther.addItemListener(new java.awt.event.ItemListener() {
      public void itemStateChanged(ItemEvent e) {
        scaleOther_itemStateChanged(e);
      }
    });
    scaleDecrease.setLabel("Scale/2");
    scaleDecrease.addItemListener(new java.awt.event.ItemListener() {
      public void itemStateChanged(ItemEvent e) {
        scaleDecrease_itemStateChanged(e);
      }
    });
    if (ed.scale_ == 1)
      scaleOne.setState(true);
    else
    {
      scaleOther.setState(true);
      scaleField.setText(ed.scale_ + "");
    }

    setFont.setLabel("Set Font");
    setFont.addItemListener(new java.awt.event.ItemListener() {
      public void itemStateChanged(ItemEvent e) {
        setFont_itemStateChanged(e);
      }
    });
    showControls.setLabel("Show Controls");
    if (ed.showControlsMenuItem.getState())
      showControls.setState(true);
    else
      showControls.setState(false);
    showControls.addItemListener(new java.awt.event.ItemListener() {
      public void itemStateChanged(ItemEvent e) {
        showControls_itemStateChanged(e);
      }
    });
 }

  void showControls_itemStateChanged(ItemEvent e)
  //This function is called when the show controls option is selected
  {
    if (showControls.getState())
    {
      ed.showControlsMenuItem.setState(true);
  	  ed.t.setVisible(true);
      ed.ini.setCatControls(true);
    }
    else
		{
      ed.showControlsMenuItem.setState(false);
      ed.t.setVisible(false);
      ed.ini.setCatControls(false);
    }
    ed.validate();
  }

  void centerOffset_itemStateChanged(ItemEvent e)
  //This function is called when the center offset option
  //is selected
  {
    DDimension port_dim = ed.viewingPanel_.getPortSize();
    DDimension cont_dim = ed.viewingPanel_.getContentSize();

    double x = (cont_dim.width - port_dim.width) / 2.0;
    double y = (cont_dim.height - port_dim.height) / 2.0;

    ed.viewingPanel_.scrollTo((int)x, (int)y);
    ed.portScroller_.setOffset(x, y);
  }

  void setFont_itemStateChanged(ItemEvent e)
  //This option displays a font dialog window when the Font
  //Settings option is selected
  {
    if(ed.fontPropDialog_ == null){
      ed.fontPropDialog_ = new FontPropDialog(ed, ed.graphCanvas_);
      
    }
    else
      ed.fontPropDialog_.showMe();
    //Update the font information in the initialization file
    ed.ini.setCatFont(ed.graphCanvas_.getFont());
  }

  void scaleDecrease_itemStateChanged(ItemEvent e)
  //Selected when the user decides to make scale = scale/2
  {
    ed.scale_ /= 2.0;
    ed.graphCanvas_.setScale(ed.scale_);
    ed.scaleLabel_.setText("Scale: " + ed.scale_);
    //Save new scale value in initialization file
    ed.ini.setCatScale(ed.scale_);
  }

  void scaleOne_itemStateChanged(ItemEvent e)
  //Selected when the user decides to make scale = 1
  {
    ed.scale_ = 1.0;
    ed.graphCanvas_.setScale(ed.scale_);
    ed.scaleLabel_.setText("Scale: " + ed.scale_);
    //Save new scale value in initialization file
    ed.ini.setCatScale(ed.scale_);
  }

  void scaleIncrease_itemStateChanged(ItemEvent e)
  //Selected when the user decides to make scale = scale*2
  {
    ed.scale_ *= 2.0;
    ed.graphCanvas_.setScale(ed.scale_);
    ed.scaleLabel_.setText("Scale: " + ed.scale_);
    //Save new scale value in initialization file
    ed.ini.setCatScale(ed.scale_);
  }

  void scaleOther_itemStateChanged(ItemEvent e)
  //Selected when the user decides to make scale = value of scaleField
  {
    try
    {
      ed.scale_ = Double.valueOf(scaleField.getText()).doubleValue();
      ed.graphCanvas_.setScale(ed.scale_);
      ed.scaleLabel_.setText("Scale: " + ed.scale_);
      //Save new scale value in initialization file
      ed.ini.setCatScale(ed.scale_);
    }
    catch (NumberFormatException e1)
    {
      new MessageDialog(ed, "Error", "Scale value must be a double", true);
    }
  }
}