/*
 * JFileField.java
 *
 * Created on January 9, 2008, 12:08 PM
 */
package nl.eelkespaak.gui;

import java.io.File;
import javax.swing.JFileChooser;
import javax.swing.filechooser.FileNameExtensionFilter;

/**
 * This component provides a text field for the manual input of a file, as well
 * as an associated 'Browse' button, allowing the user to browse for a file and
 * have its location show up automatically in the text field.
 * 
 * @author Eelke Spaak
 * @see javax.swing.JFileChooser
 */
public class JFileField extends javax.swing.JPanel {

    private String extensionFilter;
    private String fileTypeName;
    private int fileSelectionMode = JFileChooser.FILES_ONLY;

    /** Creates new form JFileField */
    public JFileField() {
        initComponents();
    }

    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">                          
    private void initComponents() {
        textField = new javax.swing.JTextField();
        browseButton = new javax.swing.JButton();

        browseButton.setText("...");
        browseButton.addActionListener(new java.awt.event.ActionListener() {

            public void actionPerformed(java.awt.event.ActionEvent evt) {
                browseButtonActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
        this.setLayout(layout);
        layout.setHorizontalGroup(
                layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).
                addGroup(layout.createSequentialGroup().addComponent(textField,
                javax.swing.GroupLayout.DEFAULT_SIZE, 347, Short.MAX_VALUE).
                addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED).
                addComponent(browseButton)));
        layout.setVerticalGroup(
                layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).
                addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE).
                addComponent(textField, javax.swing.GroupLayout.PREFERRED_SIZE,
                javax.swing.GroupLayout.DEFAULT_SIZE,
                javax.swing.GroupLayout.PREFERRED_SIZE).addComponent(browseButton)));
    }// </editor-fold>      
    
    private void browseButtonActionPerformed(java.awt.event.ActionEvent evt) {
        JFileChooser chooser = new JFileChooser();

        chooser.setFileSelectionMode(fileSelectionMode);

        if (extensionFilter != null && fileTypeName != null) {
            FileNameExtensionFilter filter = new FileNameExtensionFilter(
                    fileTypeName, extensionFilter.split(","));
            chooser.setFileFilter(filter);
        }

        try {
            File f = new File(textField.getText());
            if (f.exists()) {
                if (f.isDirectory()) {
                    chooser.setCurrentDirectory(f);
                } else {
                    chooser.setSelectedFile(f);
                }
            }
        } catch (Exception ignore) {
        }

        int returnVal = chooser.showOpenDialog(this);
        if (returnVal == JFileChooser.APPROVE_OPTION) {
            textField.setText(chooser.getSelectedFile().getPath());
        }
    }

    /**
     * Returns the value of the text field.
     * 
     * @return the value of the text field
     */
    public String getText() {
        return textField.getText();
    }

    /**
     * Sets the value of the text field.
     * 
     * @param the value to put in the text field
     */
    public void setText(String text) {
        textField.setText(text);
    }

    /**
     * Returns the extension filter (a comma-separated string of extensions)
     * that the JFileChooser should use when browsing for a file.
     * 
     * @return the extension filter
     */
    public String getExtensionFilter() {
        return extensionFilter;
    }
    /**
     * Sets the extension filter (a comma-separated string of extensions)
     * that the JFileChooser should use when browsing for a file.
     * 
     * @param extensionFilter the extension filter
     */
    public void setExtensionFilter(String extensionFilter) {
        this.extensionFilter = extensionFilter;
    }

    /**
     * Returns the description of the file types the JFileChooser should be
     * browsing for.
     * 
     * @return the file type description
     */
    public String getFileTypeName() {
        return fileTypeName;
    }

    /**
     * Sets the description of the file types the JFileChooser should be
     * browsing for.
     * 
     * @param fileTypeName the file type description
     */
    public void setFileTypeName(String fileTypeName) {
        this.fileTypeName = fileTypeName;
    }
    
    /**
     * Returns the file selection mode to be used by the JFileChooser.
     * 
     * @return the type of files to be displayed
     * @see javax.swing.JFileChooser#getFileSelectionMode()
     */
    public int getFileSelectionMode() {
        return fileSelectionMode;
    }

    /**
     * Sets the file selection mode to be used by the JFileChooser.
     * 
     * @param fileSelectionMode the type of files to be displayed
     * @see javax.swing.JFileChooser#setFileSelectionMode(int)
     */
    public void setFileSelectionMode(int fileSelectionMode) {
        this.fileSelectionMode = fileSelectionMode;
    }

    /**
     * Implemented to make layout managers align the JFileField on the baseline
     * of the included text field, rather than on the absolute bottom of the
     * JPanel.
     * 
     * @param w
     * @param h
     * @return
     */
    @Override
    public int getBaseline(int w, int h) {
        return textField.getBaseline(w, h);
    }
    // Variables declaration - do not modify                     
    private javax.swing.JButton browseButton;
    private javax.swing.JTextField textField;
    // End of variables declaration                   
}