/* Copyright 2000 Charles G. Wright
 * This software may be distributed under the terms of the
 * GNU General Public License.
 *
 * $Id: GRAoutput.java,v 1.1 2000-06-15 10:14:57-05 chuckles Exp chuckles $
 */

import java.awt.*;
import java.awt.event.*;
import java.io.*;

/** Class displaying a selection of output screens */

public class GRAoutput extends Panel implements ActionListener{

  private Button next;
  private Button previous;
  private Panel output_panel;
  private Panel title_panel;
  private Label output_title;
  private Label l1;
  private Color[] colors;
  private CardLayout output_panel_layout;

  /** Creates a panel containing several subpanels. */

  public GRAoutput(Color[] colors){

    this.colors = colors;

    //-------------------------------------------------
    // title panel creation
    title_panel = new Panel();
    FlowLayout fl = new FlowLayout(FlowLayout.LEFT, 2, 2);
    title_panel.setLayout(fl);

    l1 = new Label("Output selection:");
    title_panel.add(l1);
    previous = new Button("<");
    previous.addActionListener(this);
    title_panel.add(previous);

    next = new Button(">");
    next.addActionListener(this);
    title_panel.add(next);

    // End of title panel definition
    //----------------------------------------------
    // output panel definition
    output_panel = new Panel();
    output_panel_layout = new CardLayout();
    output_panel.setLayout(output_panel_layout);
    // We don't add anything to it right away.
    //End of output panel definition

    //-------- top graph panel definition -----------
    GridBagLayout top_output_layout = new GridBagLayout();
    setLayout(top_output_layout);

    GridBagConstraints ct = new GridBagConstraints();
    ct.fill = GridBagConstraints.BOTH;
    ct.gridwidth = GridBagConstraints.REMAINDER;
    ct.weightx = 1.0;
    ct.weighty = 0.0;
    ct.gridx = 0;
    ct.insets = new Insets(3,3,3,3);
    top_output_layout.setConstraints(title_panel, ct);

    GridBagConstraints cb = new GridBagConstraints();
    ct.weighty = 1.0;
    top_output_layout.setConstraints(output_panel, ct);
    add(title_panel);
    add(output_panel);
  }

  public void paint(Graphics g){
    setForeground(Color.blue);
    Dimension d = getSize();
    g.drawRect(0, 0, d.width - 1, d.height - 1);
  }

  public void addOutputPanel(Component p, String name){
    output_panel.add(p, name);
  }

  // Come here when a button is pressed, to page through graphs.

  public void actionPerformed(ActionEvent ae){

    Object sel = ae.getSource();

     // Handle interactions between month and day selectors.
    if (sel == previous){
      output_panel_layout.previous(output_panel);
    } else if (sel == next){
      output_panel_layout.next(output_panel);
    }
  }
}