org.ligi.android.dubwise_uavtalk.dashboard.DownloadDashboardImagesStatusAlertDialog.java Source code

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Here is the source code for org.ligi.android.dubwise_uavtalk.dashboard.DownloadDashboardImagesStatusAlertDialog.java

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/**************************************************************************
 *
 * License:
 *
 *  http://creativecommons.org/licenses/by-nc-sa/2.0/de/ 
 *  (Creative Commons / Non Commercial / Share Alike)
 *  Additionally to the Creative Commons terms it is not allowed
 *  to use this project in _any_ violent context! 
 *  This explicitly includes that lethal weapon owning "People" and 
 *  Organisations (e.g. Army & Police) 
 *  are not allowed to use this Project!
 *  
 *  The program is provided AS IS with NO WARRANTY OF ANY KIND, 
 *  INCLUDING THE WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS 
 *  FOR A PARTICULAR PURPOSE.
 *
 *  If you have questions please write the author marcus bueschleb 
 *  a mail to ligi at ligi dot de
 *  
 *  enjoy life!
 *  ligi
 *
 **************************************************************************/

package org.ligi.android.dubwise_uavtalk.dashboard;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.net.URL;
import java.net.URLConnection;

import org.apache.http.util.ByteArrayBuffer;
import org.ligi.axt.helpers.dialog.DialogDiscardingOnClickListener;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.Intent;
import android.os.Environment;
import android.os.Handler;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
import android.widget.ScrollView;
import android.widget.TextView;

/**
 * shows Progress of downloading Dashboard theme images
 * 
 * @author ligi ( aka: Marcus Bueschleb | mail: ligi at ligi dot de )
 *
 */
public class DownloadDashboardImagesStatusAlertDialog {

    private final static String[] img_lst = new String[] { "out", "chan", "tune", "con" };
    private final static String[] url_lst = new String[] {
            "http://git.openpilot.org/browse/~raw,r=7195862d77afd72c6bd296c3b5137964fa48059b/OpenPilot/ground/openpilotgcs/src/plugins/config/images/Servo.png",
            "http://git.openpilot.org/browse/~raw,r=aabe6524516d7a4eb30d6970d862840d1eb83f58/OpenPilot/ground/openpilotgcs/src/plugins/config/images/Transmitter.png",
            "http://git.openpilot.org/browse/~raw,r=7ce441291601fae3936b12d17253ec94fc003bd1/OpenPilot/ground/openpilotgcs/src/plugins/config/images/gyroscope.png",
            "http://git.openpilot.org/browse/~raw,r=7195862d77afd72c6bd296c3b5137964fa48059b/OpenPilot/ground/openpilotgcs/src/plugins/config/images/PipXtreme.png" };

    /**
     * shows the handshake status alert
     * do not autoclose
     * 
     * @param activity
     */
    public static void show(Activity activity) {
        show(activity, false, null);
    }

    /**
     * 
     * @param activity
     * @param autoclose - if the alert should close when connection is established
     * 
     */
    public static void show(Context activity, boolean autoclose, Intent after_connection_intent) {

        LinearLayout lin = new LinearLayout(activity);
        lin.setOrientation(LinearLayout.VERTICAL);

        ScrollView sv = new ScrollView(activity);
        TextView details_text_view = new TextView(activity);

        LinearLayout lin_in_scrollview = new LinearLayout(activity);
        lin_in_scrollview.setOrientation(LinearLayout.VERTICAL);
        sv.addView(lin_in_scrollview);
        lin_in_scrollview.addView(details_text_view);

        details_text_view.setText("no text");

        ProgressBar progress = new ProgressBar(activity, null, android.R.attr.progressBarStyleHorizontal);
        progress.setMax(img_lst.length);

        lin.addView(progress);
        lin.addView(sv);

        new AlertDialog.Builder(activity).setTitle("Download Status").setView(lin)
                .setPositiveButton("OK", new DialogDiscardingOnClickListener()).show();

        class AlertDialogUpdater implements Runnable {

            private Handler h = new Handler();
            private TextView myTextView;
            private ProgressBar myProgress;

            public AlertDialogUpdater(TextView ab, ProgressBar progress) {
                myTextView = ab;
                myProgress = progress;

            }

            public void run() {

                for (int i = 0; i < img_lst.length; i++) {
                    class MsgUpdater implements Runnable {

                        private int i;

                        public MsgUpdater(int i) {
                            this.i = i;
                        }

                        public void run() {
                            myProgress.setProgress(i + 1);
                            if (i != img_lst.length - 1)
                                myTextView.setText("Downloading " + img_lst[i] + ".png");
                            else
                                myTextView.setText("Ready - please restart DUBwise to apply changes!");
                        }
                    }
                    h.post(new MsgUpdater(i));

                    try {
                        URLConnection ucon = new URL(url_lst[i]).openConnection();
                        BufferedInputStream bis = new BufferedInputStream(ucon.getInputStream());

                        ByteArrayBuffer baf = new ByteArrayBuffer(50);
                        int current = 0;
                        while ((current = bis.read()) != -1)
                            baf.append((byte) current);

                        File path = new File(
                                Environment.getExternalStorageDirectory() + "/dubwise/images/dashboard");
                        path.mkdirs();

                        FileOutputStream fos = new FileOutputStream(
                                new File(path.getAbsolutePath() + "/" + img_lst[i] + ".png"));
                        fos.write(baf.toByteArray());
                        fos.close();
                    } catch (Exception e) {
                    }

                    try {
                        Thread.sleep(199);
                    } catch (InterruptedException e) {
                    }

                }
            }
        }

        new Thread(new AlertDialogUpdater(details_text_view, progress)).start();
    }
}