/*=========================================================================

  Program:   FusionViewer
  Module:    $RCSfile: ImageFileChooser.java,v $
  Language:  Java
  Date:      $Date: 2007/02/02 19:27:57 $
  Version:   $Revision: 1.3 $
  
  Copyright (c) Insightful Corporation.  All rights reserved.
  See Copyright.txt for details.
  
  This software is distributed WITHOUT ANY WARRANTY; without even
  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
  PURPOSE.  See the above copyright notice for more information.

=========================================================================*/

package org.fusionviewer.ui;

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Frame;
import java.io.File;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFileChooser;
import javax.swing.JPanel;
import javax.swing.filechooser.FileFilter;

import com.sun.demo.jfc.ExampleFileFilter;


/**\class ImageFileChooser
 *\brief Dialog box to select an image file or directory of image files.
 */
public class ImageFileChooser extends JDialog {
	private static FileFilter m_allImageFileFilter;
	private boolean m_okPressed = false;

	static {
		m_allImageFileFilter = new ExampleFileFilter(
				new String[] {"mhd", "h33", "dcm", "hdr",
						"jpg", "jpeg", "tif", "tiff", "png"},
				"Images");
	}

	/**
	 * Create a dialog box with the indicated owner
	 *
	 * @param owner parent frame of this dialog box
	 * @param path image absolute path
	 */
	public ImageFileChooser(Frame owner, String path) {
		super(owner, true);

		JPanel panel = new JPanel(new BorderLayout(10, 10));
		panel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
		panel.add(createFileChooser(path), BorderLayout.CENTER);
		panel.add(createButtons(), BorderLayout.PAGE_END);
		getContentPane().add(panel);

		setTitle("Open Images");
		pack();
		PlatformUtility.centerWindow(this);
	}

	/*
	 * Create buttons along the bottom
	 */
	private Component createButtons() {
		JPanel panel = new JPanel();
		panel.add(new JButton("Open All"));
		panel.add(new JButton("Cancel"));
		panel.add(new JButton("Open"));
		return panel;
	}

	/**
	 * Shows the dialog and blocks until the user dismisses it.
	 *
	 * @return true if the user clicked OK.
	 */
	public boolean run() {
		setVisible(true);
		return m_okPressed;
	}

	/*
	 * Creates a JFileChooser that allows the user to browse for files.  The
	 * initial path is set to the argument path.
	 */
	static JFileChooser createFileChooser(String path)
	{
		JFileChooser chooser = null;

		if (path == null) {
			chooser = new JFileChooser();
		} else {
			path = path.trim();		// Clear leading and trailing whitespace

			String	defaultPath = "";
			if (path.length() > 0) {
				File defaultFile = new File(path);
				if (!defaultFile.exists() || !defaultFile.isDirectory())
					defaultFile = defaultFile.getParentFile();

				if ((defaultFile != null) && defaultFile.exists())
					defaultPath = defaultFile.getPath();
			}

			if (defaultPath.length() > 0)
				chooser = new JFileChooser(defaultPath);
			else
				chooser = new JFileChooser();
		}

		chooser.addChoosableFileFilter(m_allImageFileFilter);
		chooser.setControlButtonsAreShown(false);

		return chooser;
	}
}