/*
 * Copyright 2005 MH-Software-Entwicklung. All rights reserved.
 * Use is subject to license terms.
 */
package com.jtattoo.plaf;

import java.io.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.filechooser.FileView;
import javax.swing.plaf.*;
import javax.swing.plaf.metal.*;

/**
 * @author Michael Hagen
 */
public class BaseFileChooserUI extends MetalFileChooserUI {

    private FileView fileView = null;

    // Preferred and Minimum sizes for the dialog box
    private static int PREF_WIDTH = 580;
    private static int PREF_HEIGHT = 340;
    private static Dimension PREF_SIZE = new Dimension(PREF_WIDTH, PREF_HEIGHT);

    public BaseFileChooserUI(JFileChooser fileChooser) {
        super(fileChooser);
        fileView = new BaseFileView();
    }

    public static ComponentUI createUI(JComponent c) {
        return new BaseFileChooserUI((JFileChooser) c);
    }

    /**
     * Returns the preferred size of the specified
     * <code>JFileChooser</code>.
     * The preferred size is at least as large,
     * in both height and width,
     * as the preferred size recommended
     * by the file chooser's layout manager.
     *
     * @param c  a <code>JFileChooser</code>
     * @return   a <code>Dimension</code> specifying the preferred
     *           width and height of the file chooser
     */
    public Dimension getPreferredSize(JComponent c) {
        int prefWidth = PREF_SIZE.width;
        Dimension d = c.getLayout().preferredLayoutSize(c);
        if (d != null) {
            return new Dimension(d.width < prefWidth ? prefWidth : d.width,
                    d.height < PREF_SIZE.height ? PREF_SIZE.height : d.height);
        } else {
            return new Dimension(prefWidth, PREF_SIZE.height);
        }
    }

    public FileView getFileView(JFileChooser fc) {
        if (JTattooUtilities.getJavaVersion() < 1.4) {
            return super.getFileView(fc);
        } else {
            return fileView;
        }
    }

//------------------------------------------------------------------------------    
    protected class BaseFileView extends BasicFileView {

        public Icon getIcon(File f) {
            Icon icon = getCachedIcon(f);
            if (icon != null) {
                return icon;
            }
            if (f != null) {
                icon = getFileChooser().getFileSystemView().getSystemIcon(f);
            }
            if (icon == null) {
                icon = super.getIcon(f);
            }
            cacheIcon(f, icon);
            return icon;
        }
    }
}