/*

 * Copyright (c) 1998, 2011, Oracle and/or its affiliates. All rights reserved.

 *

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 * modification, are permitted provided that the following conditions

 * are met:

 *

 *   - Redistributions of source code must retain the above copyright

 *     notice, this list of conditions and the following disclaimer.

 *

 *   - Redistributions in binary form must reproduce the above copyright

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 *

 *   - Neither the name of Oracle nor the names of its

 *     contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS

 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR

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 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

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 */

/*

 * This source code is provided to illustrate the usage of a given feature

 * or technique and has been deliberately simplified. Additional steps

 * required for a production-quality application, such as security checks,

 * input validation and proper error handling, might not be present in

 * this sample code.

 */

import java.io.File;

import java.io.IOException;

import javax.swing.filechooser.FileSystemView;

/**

 * This is a simple example that uses the FileSystemView class.

 * You can provide a superclass of the FileSystemView class with your own functionality.

 *

 * @author Pavel Porvatov

 */

public class ExampleFileSystemView extends FileSystemView {

    /**

     * Creates a new folder with the default name "New folder". This method is invoked

     * when the user presses the "New folder" button.

     */

    public File createNewFolder(File containingDir) throws IOException {

        File result = new File(containingDir, "New folder");

        if (result.exists()) {

            throw new IOException("Directory 'New folder' exists");

        }

        if (!result.mkdir()) {

            throw new IOException("Cannot create directory");

        }

        return result;

    }

    /**

     * Returns a list which appears in a drop-down list of the FileChooser component.

     * In this implementation only the home directory is returned.

     */

    @Override

    public File[] getRoots() {

        return new File[] { getHomeDirectory() };

    }

    /**

     * Returns a string that represents a directory or a file in the FileChooser component.

     * A string with all upper case letters is returned for a directory.

     * A string with all lower case letters is returned for a file.

     */

    @Override

    public String getSystemDisplayName(File f) {

        String displayName = super.getSystemDisplayName(f);

        return f.isDirectory() ? displayName.toUpperCase() : displayName.

                toLowerCase();

    }

}