movieitemview.java

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/*
 * MovieItemView - the item View for the MovieCat model.
 * This implements a view of a single item - the current movie.
 * Copyright (c) 2001, Bruce E. Wampler
 */

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

public class MovieItemView
        extends		WmvcView
	implements	ActionListener	// for buttons
{
    protected GridBagLayout gridbag;
    protected GridBagConstraints c;

    private JPanel itemPanel;
    private MovieModel myModel;		// local copy

    // Various components needed for constructing the view
    // We use private statics of each of these since there will
    // be only one instance of the itemView

    private static JLabel lblTitle=new JLabel("Movie Title: ");
    private static JLabel fldTitle = new JLabel(" ");
    private static JLabel lblDirector=new JLabel("Director: ");
    private static JLabel fldDirector = new JLabel(" ");
    private static JLabel lblYear = new JLabel("Year: ");
    private static JLabel fldYear = new JLabel(" ");
    private static JLabel lblRating = new JLabel("Rating: ");
    private static JLabel fldRating = new JLabel(" ");
    private static JLabel lblGenre = new JLabel("   Genre: ");
    private static JLabel fldGenre = new JLabel(" ");
    private static JLabel lblFormat = new JLabel("   Format: ");
    private static JLabel fldFormat = new JLabel(" ");
    private static JLabel lblLabel = new JLabel("   Label: ");
    private static JLabel fldLabel = new JLabel(" ");
    private static JLabel lblEvaluation = 
    				new JLabel("My Rating: ");
    private static JLabel fldEvaluation = new JLabel(" ");
    private static JLabel lblComments=new JLabel("Comments: ");

    private static JTextArea textArea;
    private static JButton bPrevious;
    private static JButton bNext;
    private static JButton bEdit;

    public JPanel getPanel() { return itemPanel; }

    protected void setAndAdd(JComponent comp,
        int gx, int gy, int gheight, int gwidth, double wx)
    {
	// to simplify laying out the gridbag
	c.anchor = c.WEST;
	c.gridx = gx; c.gridy = gy;
	c.gridheight = gheight; c.gridwidth = gwidth;
	c.weightx = wx;
	gridbag.setConstraints(comp,c);
	itemPanel.add(comp);
    }

    public MovieItemView()
    {
	myModel = (MovieModel)WmvcApp.getModel();
	myModel.addView(this);		// adds update

	// We will use a GridBag for simple layout of itemView

	itemPanel = new JPanel();	// surrounding Panel
	gridbag = new GridBagLayout();
	c = new GridBagConstraints();
	itemPanel.setLayout(gridbag);
	itemPanel.setBorder(BorderFactory.createEmptyBorder(
						5, 5, 5, 5));

	// Set data fields to black foreground
	fldTitle.setForeground(Color.black);
	fldDirector.setForeground(Color.black);
	fldYear.setForeground(Color.black);
	fldRating.setForeground(Color.black);
	fldGenre.setForeground(Color.black);
	fldFormat.setForeground(Color.black);
	fldLabel.setForeground(Color.black);
	fldEvaluation.setForeground(Color.black);

	// Movie Title: ________________________
	setAndAdd(lblTitle, 0, 0, 1, 1, 1.0);
	setAndAdd(fldTitle, 1, 0, 1, c.REMAINDER, 0.);

	// Director: _____________________
	setAndAdd(lblDirector, 0, 1, 1, 1, 1.0);
	setAndAdd(fldDirector, 1, 1, 1, c.REMAINDER, 0.0);

	// Year: _______      Genre: _________
	setAndAdd(lblYear,  0, 2, 1, 1, 1.0);
	setAndAdd(fldYear,  1, 2, 1, 1, 0.0);
	setAndAdd(lblGenre, 2, 2, 1, c.RELATIVE,0.0);
	setAndAdd(fldGenre, 3, 2, 1, c.REMAINDER,0.0);

	// Rating: _______    Format: __________
	setAndAdd(lblRating,  0, 3, 1, 1, 1.0);
	setAndAdd(fldRating,  1, 3, 1, 1, 0.0);
	setAndAdd(lblFormat,  2, 3, 1, c.RELATIVE, 0.0);
	setAndAdd(fldFormat,  3, 3, 1, c.REMAINDER, 0.);

	// My Rating: ______   Label: _________
	setAndAdd(lblEvaluation,  0, 4, 1, 1, 1.0);
	setAndAdd(fldEvaluation,  1, 4, 1, 1, 0.);
	setAndAdd(lblLabel,     2, 4, 1, c.RELATIVE, 0.0);
	setAndAdd(fldLabel,     3, 4, 1, c.REMAINDER, 0.);

	// Comment box:
	setAndAdd(lblComments,  0,5,1,1, 0.0);
	textArea = new JTextArea(4,30);
	JScrollPane textScroll = new JScrollPane(textArea);
	setAndAdd(textScroll,  1,5,4,c.REMAINDER, 0.0);

	// Command Buttons
	bEdit =   new JButton("  Edit  ");
	bEdit.setActionCommand("edit");
	bEdit.addActionListener(this);
	bEdit.setToolTipText("Edit current movie");
	setAndAdd(bEdit, 1,9,1,1, 0.0);

	bPrevious = new JButton("Previous");
	bPrevious.addActionListener(this);
	bPrevious.setActionCommand("previous");
	bPrevious.setIcon(new ImageIcon("images/left-16.gif"));
	bPrevious.setToolTipText("Go to previous movie");
	setAndAdd(bPrevious, 2,9,1,1, 0.0);

	bNext =     new JButton("Next");
	bNext.setActionCommand("next");
	bNext.addActionListener(this);
	bNext.setIcon(new ImageIcon("images/right-16.gif"));
	bNext.setToolTipText("Go to next movie");
	setAndAdd(bNext, 3,9,1,1,0.0);
    }

    public void updateView()
    {
	// When model changes - update each fld componenet
	Movie m = myModel.getCurrentMovie();

	fldTitle.setText(m.getTitle());
	fldDirector.setText(m.getDirector());
	fldYear.setText(m.getYear());
	fldLabel.setText(m.getLabel());
	textArea.setText(m.getComments());

	fldRating.setText(MovieRating.stringAt(m.getRating()));
	fldGenre.setText(MovieGenre.stringAt(m.getGenre()));
	fldFormat.setText(MovieFormat.stringAt(m.getFormat()));
	fldEvaluation.setText(
		MovieEvaluation.stringAt(m.getEvaluation()));
    }

    // Implement ActionListener
    public void actionPerformed(ActionEvent e)
    {
	// Since only three buttons, easier to use one listener
	if (e.getActionCommand().equals("edit"))
	{
	    Movie edited = 
	    	MovieEditor.getInstance().showDialog(
	    	   WmvcApp.getFrame(),
	    	   myModel.getCurrentMovie());
	    myModel.replaceCurrentMovie(edited);
	}
	else if (e.getActionCommand().equals("previous"))
	{
	    myModel.setCurrentMovieIndex(
	         myModel.getCurrentMovieIndex()-1);
	}
	else if (e.getActionCommand().equals("next"))
	{
	    myModel.setCurrentMovieIndex(
	         myModel.getCurrentMovieIndex()+1);
	}
    }
}