view InstructionsPanel.java @ 45:351b0c8b34ac

Fixed issue where error message was shown every time the user chose to move continue using the keyboard.
Fixed issue where data wasn't saving to file after questionaire.
Changed SubjectData output filename to "<Participant ID>_qu.dat" (previously was "subjects.dat". Would have been overwritten as wasn't dynamic.

/*=============================================================================
 * File:       InstructionsPanel.java
 * Author:     Marcus Pearce <[e-mail]>
 * Created:    <2007-12-05 10:57:31 marcusp>
 * Time-stamp: <2007-12-14 16:29:55 marcusp>
 *=============================================================================
 */

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.text.*;
import java.io.*;
import java.util.regex.Pattern;

public class InstructionsPanel extends JPanel { 

    /* invalid subject id */ 
    public static final String INVALID_SUBJECT_ID = "----"; 

    /* variables */ 
    private ExperimentGui gui; 
    private JTextField subjectIDField; 
    private JButton nextButton = new JButton(); 
    
    /* accessors */ 
    public JButton getNextButton() { return nextButton; }
    
    /* constructor */ 
    public InstructionsPanel (ExperimentGui eg) { 

        gui = eg; 
        Experiment exp = gui.getExperiment(); 
        
        String file = exp.getInstructionsFile(); 
        JScrollPane instructionsPane = createInstructionsPane(file); 

        JLabel label = new JLabel("Participant ID: ");
        subjectIDField = new JTextField(10);

        nextButton = new JButton("Continue"); 

        JPanel subjectIDPane = new JPanel(); 
        subjectIDPane.add(label);
        subjectIDPane.add(subjectIDField); 
        subjectIDPane.add(nextButton); 

        this.setLayout (new BorderLayout());
        this.add(instructionsPane, BorderLayout.CENTER); 
        this.add(subjectIDPane, BorderLayout.SOUTH);
    }

    /* methods */ 

    public String getSubjectID() {
	String subjID = subjectIDField.getText();
	Pattern nonAlphaNum = Pattern.compile("[^a-zA-Z0-9]");
	
	if (nonAlphaNum.matcher(subjID).find()) {
            subjID = INVALID_SUBJECT_ID; 
        }

        return subjID; 
    }
    
    private JScrollPane createInstructionsPane(String instructionsFile) {
        
        JEditorPane editorPane = new JEditorPane();

        try { 
            FileReader reader = new FileReader(new File(instructionsFile)); 
            editorPane.setEditable(false);
            editorPane.setContentType("text/html");
            editorPane.read(reader, null);
        } catch (Exception e) { 
            System.out.println(e.getMessage());
        }
        
        JScrollPane editorScrollPane = new JScrollPane(editorPane);
        editorScrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED);
        editorScrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);

        editorScrollPane.setBorder(BorderFactory.createCompoundBorder(BorderFactory.createTitledBorder("Instructions"), BorderFactory.createEmptyBorder(5,5,5,5)));
        editorScrollPane.setPreferredSize(new Dimension(300, 250));
        editorScrollPane.setMinimumSize(new Dimension(10, 10));
        return editorScrollPane;
    }

    public void addNextButtonListener(ActionListener al) { 
        nextButton.addActionListener(al); 
    }
}