/**

 *  Apple Worldwide Developer Technical Support

 *

 *  Sample demonstrating AppleScript for Java.

 *

 *  by Michael Hopkins and Levi Brown, Apple Developer Technical Support

 *

 *  File:   Util.java

 *

 *  Copyright ©1996 Apple Computer, Inc.

 *  All rights reserved.

 *

 *  4/99    v. 1.0  Shipped as 'Magic Oracle AppleScript for Java' sample.

 *

 *  You may incorporate this sample code into your applications without

 *  restriction, though the sample code has been provided "AS IS" and the

 *  responsibility for its operation is 100% yours.  However, what you are

 *  not permitted to do is to redistribute the source as "Apple Sample

 *  Code" after having made changes. If you're going to re-distribute the

 *  source, we require that you make it clear in the source that the code

 *  was descended from Apple Sample Code, but that you've made changes.

**/

import java.awt.*;

import java.io.*;

import java.net.URL;

public class Util

{

    public static final Color GSBColor  = Color.black;

    public static final Color GSWColor  = Color.white;

    public static final Color GS1Color  = new Color(238, 238, 238);

    public static final Color GS2Color  = new Color(221, 221, 221);

    public static final Color GS3Color  = new Color(204, 204, 204);

    public static final Color GS4Color  = new Color(187, 187, 187);

    public static final Color GS5Color  = new Color(170, 170, 170);

    public static final Color GS6Color  = new Color(153, 153, 153);

    public static final Color GS7Color  = new Color(136, 136, 136);

    public static final Color GS8Color  = new Color(119, 119, 119);

    public static final Color GS9Color  = new Color(102, 102, 102);

    public static final Color GS10Color = new Color( 85,  85,  85);

    public static final Color GS11Color = new Color( 68,  68,  68);

    public static final Color GS12Color = new Color( 34,  34,  34);

    public static final Color GSA1Color = new Color( 51,  51,  51);

    public static final Color GSA2Color = new Color( 17,  17,  17);

    /**

     * Completely loads the Image referenced by the given filename.

     * This will block until the image is loaded.

     * @param filename the path of the Image to load.

     * @param watcher the component to use to load the image.

     * @return the loaded Image, or null if the loading fails.

     */

    public static Image loadImage(String filename, Component watcher)

    {

        Image image = null;

        if (filename != null)

        {

            URL url = watcher.getClass().getResource(filename);

            if (url == null)

            {

                System.err.println("loadImage() could not find \"" + filename + "\"");

            }

            else

            {

                image = watcher.getToolkit().getImage(url);

                if (image == null)

                {

                    System.err.println("loadImage() getImage() failed for \"" + filename + "\"");

                }

                else

                {

                    MediaTracker tracker = new MediaTracker(watcher);

                    try

                    {

                        tracker.addImage(image, 0);

                        tracker.waitForID(0);

                    }

                    catch (InterruptedException e) { System.err.println("loadImage(): " + e); }

                    finally

                    {

                        boolean isError = tracker.isErrorAny();

                        if (isError)

                        {

                            System.err.println("loadImage() failed to load \"" + filename + "\"");

                            int flags = tracker.statusAll(true);

                            boolean loading = 0 != (flags & MediaTracker.LOADING);

                            boolean aborted = 0 != (flags & MediaTracker.ABORTED);

                            boolean errored = 0 != (flags & MediaTracker.ERRORED);

                            boolean complete = 0 != (flags & MediaTracker.COMPLETE);

                            System.err.println("loading: " + loading);

                            System.err.println("aborted: " + aborted);

                            System.err.println("errored: " + errored);

                            System.err.println("complete: " + complete);

                        }

                    }

                }

            }

        }

        return image;

    }

    /**

     * Reads in a text file to a String.

     * There is probably a more elegant solution, but this works.

     * @param file the text file to read.

     * @return the string containing the contents of the file.

     * @throws java.io.FileNotFoundException if the given file can not

     * be found to be read.

     */

    public static String readTextResourceFile(String filePath, Object localRef) throws FileNotFoundException

    {

        String result = "";

        if (filePath != null && localRef != null)

        {

            InputStream inStream = localRef.getClass().getResourceAsStream(filePath);

            if (inStream == null)

                throw new FileNotFoundException("Could not find \"" + filePath + "\"");

            //Create a new buffered input stream out of the raw input stream, with a buffer of 8k.

            BufferedInputStream in = new BufferedInputStream(inStream, 8192);

            try

            {

                StringBuffer sb = new StringBuffer();

                int c = in.read();

                while (c != -1)

                {

                    sb = sb.append((char)c);

                    c = in.read();

                }

                result = new String(sb);

            }

            catch (IOException exc)

            {

                exc.printStackTrace();

            }

        }

        return result;

    }

    /**

     * Replaces a given substring with the supplied string in the source string.

     * @param what is the substring of the source string to replace.

     * @param with is the string to use instead.

     * @param source is the original string.

     * @return the modified string with all occurances of 'what' replaced by 'with'

     */

    public static String replace(String what, String with, String source)

    {

        String result = new String(source);

        int index = source.indexOf(what);

        while (index >= 0)

        {

            result = (result.substring(0, index) + with + result.substring(index + what.length()));

            index = result.indexOf(what);

        }

        return result;

    }

}