package edu.hws.eck.mdb;

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

/**
 * A Frame that holds a MandelbrotPanel and a menu bar appropriate
 * for that panel.
 */
public class MandelbrotFrame extends JFrame {
   
   private MandelbrotPanel panel;
   
   
   /**
    * Create a frame appropriate for running in a stand-alone
    * application.  Available menu commands depend on whether
    * the program is running as an applet or as an application.
    * This just calls the constructor MandelbrotFrame(boolean)
    * with parameter set equal to false.
    */
   public MandelbrotFrame() {
      this(false);
   }
   
   
   /**
    * Create the frame, containing a MandelbrotPanel and a menu bar
    * of type Menus.  The frame's upper left corner is positioned
    * at (30,50).  It is not made visible.
    * @param runningAsApplet If true, then menu commands that are
    *   unusable in an applet are not added to the menu bar.  This
    *   means, basically, that there is no File menu when 
    *   runningAsApplet is true.
    */
   public MandelbrotFrame(boolean runningAsApplet) {
      super(I18n.tr("frame.title"));
      panel = new MandelbrotPanel();
      setContentPane(panel);
      setJMenuBar(new Menus(panel,this,runningAsApplet));
      pack();
      setLocation(30,50);
   }
   

   /**
    * Returns the MandelbrotPanel that is displayed in this frame.
    * Note that getMandelbrotPanel().getDisplay() returns the panel's
    * MandelbrotDisplay.
    */
   public MandelbrotPanel getMandelbrotPanel() {
      return panel;
   }
   
   
   /**
    * This can be called to adjust the size/shape of the frame so that
    * it is completely visible on the screen.  If it extends beyond the
    * screen on the right or bottom, it is moved.  Then, if the upper
    * left corner is off the screen, the window is resized.
    */
   public void adjustToScreenIfNecessary() {
      Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
      Point corner = getLocation();  // Upper left corner of window.
      Dimension size = getSize();    // Size of window.
      boolean changed = false;  // Does size or position have to be changed?
      if (corner.x + size.width > screenSize.width) {
             // Move corner left to bring right edge of window onto screen.
         corner.x = screenSize.width - size.width - 5; 
         if (corner.x < 5) { 
               // Original width was too wide for the screen, so size the window to fit the screen.
            corner.x = 5;
            size.width = screenSize.width - 10;
         }
         changed = true;
      }
      if (corner.y + size.height > screenSize.height) {
             // Move corner up to bring bottom edge of window onto screen.
         corner.y = screenSize.height - size.height - 10;  
         if (corner.y < 40) { 
               // Original height was too big for the screen, so size the window to fit the screen.
            corner.y = 40;
            size.height = screenSize.height - 50;
         }
         changed = true;
      }
      if (changed) {
         setBounds(corner.x, corner.y, size.width, size.height);
      }
   }

}