[Jreepad-CVS] jreepad/src/jreepad/ui SaveFileChooser.java, NONE, 1.1 ExtensionFileFilter.java, NONE, 1.1

[PeWu <pe...@us...>]

Update of /cvsroot/jreepad/jreepad/src/jreepad/ui
In directory sc8-pr-cvs6.sourceforge.net:/tmp/cvs-serv2400/src/jreepad/ui

Added Files:
	SaveFileChooser.java ExtensionFileFilter.java 
Log Message:
Use Action interface for saveAction.
Added possibility to choose file format in the save dialog.

--- NEW FILE: ExtensionFileFilter.java ---
package jreepad.ui;

import java.io.File;

import javax.swing.filechooser.FileFilter;

/**
 * File filter, which accepts only files with the given extension.
 */
public class ExtensionFileFilter extends FileFilter
{
    /**
     * Description of this filter.
     */
    private String description;

    /**
     * Allowed extension.
     */
    private String extension;

    /**
     * Lowercase version of the extension.
     */
    private String lowercaseExtension;

    public ExtensionFileFilter(String description, String extension)
    {
        this.description = description;
        this.extension = extension;
        this.lowercaseExtension = extension.toLowerCase();
    }

    /**
     * Tests whether the given file has the appropriate extension.
     */
    public boolean accept(File f)
    {
        if (f == null)
            return false;
        if (f.isDirectory())
            return true;
        String fileName = f.getName();
        int i = fileName.lastIndexOf('.');
        if (i <= 0 || i >= fileName.length() - 1)
            return false;
        String fileExtension = fileName.substring(i + 1).toLowerCase();
        if (fileExtension.equals(lowercaseExtension))
            return true;
        return false;
    }

    /**
     * Returns the description of this filter.
     */
    public String getDescription()
    {
        return description;
    }

    /**
     * Returns the filtered file extension.
     */
    public String getExtension()
    {
        return extension;
    }
}
--- NEW FILE: SaveFileChooser.java ---
package jreepad.ui;

import java.io.File;
import java.util.ResourceBundle;

import javax.swing.JFileChooser;
import javax.swing.JOptionPane;

public class SaveFileChooser extends JFileChooser
{
    protected static final ResourceBundle LANG = ResourceBundle.getBundle("jreepad.lang.JreepadStrings");

    public void approveSelection()
    {
        if (!checkOverwrite(getSelectedFile()))
            return; // User doesn't want to overwrite the file
        if (getSelectedFile().isFile() && !getSelectedFile().canWrite())
        {
            JOptionPane.showMessageDialog(this, LANG.getString("MSG_FILE_NOT_WRITEABLE"),
                    LANG.getString("TITLE_FILE_ERROR"), JOptionPane.ERROR_MESSAGE);
            return; // Can't write selected file
        }
        super.approveSelection();
    }

    private boolean checkOverwrite(File theFile)
    {
        // If file doesn't already exist then fine
        if (theFile == null || !theFile.exists())
            return true;

        // Else we need to confirm
        return (JOptionPane.showConfirmDialog(this, LANG.getString("PROMPT_CONFIRM_OVERWRITE1")
                + " " + theFile.getName() + " "
                + LANG.getString("PROMPT_CONFIRM_OVERWRITE2"),
                LANG.getString("TITLE_CONFIRM_OVERWRITE"), JOptionPane.YES_NO_OPTION)
                == JOptionPane.YES_OPTION);
    }
}