OpenDialog.java

package ij.io;
import ij.*;
import ij.gui.*;
import ij.plugin.frame.Recorder;
import ij.util.Java2;
import java.awt.*;
import java.io.*;
import javax.swing.*;
import javax.swing.filechooser.*;

 public class OpenDialog {

    private String dir;
    private String name;
    private boolean recordPath;
    private static String defaultDirectory;
    private static Frame sharedFrame;
    private String title;
    
    public OpenDialog(String title, String path) {
        if (path==null || path.equals("")) {
            jOpen(title, getDefaultDirectory(), null);
            if (name!=null) defaultDirectory = dir;
            this.title = title;
            recordPath = true;
        } else {
            decodePath(path);
        }
        IJ.register(OpenDialog.class);
    }
    
    public OpenDialog(String title, String defaultDir, String defaultName) {
        String path = null;
        if (path!=null)
            decodePath(path);
        else {
            jOpen(title, defaultDir, defaultName);
            this.title = title;
            recordPath = true;
        }
    }
    
    // Uses the JFileChooser class to display the dialog box
    void jOpen(String title, String path, String fileName) {
        Java2.setSystemLookAndFeel();
        JFileChooser fc = new JFileChooser();
        File fdir = null;
        if (path!=null)
            fdir = new File(path);
        if (fdir!=null)
            fc.setCurrentDirectory(fdir);
        if (fileName!=null)
            fc.setSelectedFile(new File(fileName));
        int returnVal = fc.showOpenDialog(null);
        if (returnVal!=JFileChooser.APPROVE_OPTION)
            { return;}
        File file = fc.getSelectedFile();
        if (file==null)
            { return;}
        name = file.getName();
        dir = fc.getCurrentDirectory().getPath()+File.separator;
    }
    

    void decodePath(String path) {
        int i = path.lastIndexOf('/');
        if (i==-1)
            i = path.lastIndexOf('\\');
        if (i>0) {
            dir = path.substring(0, i+1);
            name = path.substring(i+1);
        } else {
            dir = "";
            name = path;
        }
    }

    public String getDirectory() {
        return dir;
    }
    
    public String getFileName() {
        if (Recorder.record && recordPath)
            Recorder.recordPath(title, dir+name);
        return name;
    }
        
    public static String getDefaultDirectory() {
        if (defaultDirectory==null)
            defaultDirectory = Prefs.getString(Prefs.DIR_IMAGE);
        return defaultDirectory;
    }

    public static void setDefaultDirectory(String defaultDir) {
        defaultDirectory = defaultDir;
        IJ.register(OpenDialog.class);
    }

}