package cgeo.geocaching.utils;

import android.os.Handler;
import android.os.Message;

import cgeo.geocaching.IGeoData;
import cgeo.geocaching.Settings;
import cgeo.geocaching.cgeoapplication;
import cgeo.geocaching.utils.IObserver;

/**
 * GeoData and Direction handler. Manipulating geodata and direction information
 * through a GeoDirHandler ensures that all listeners are registered from a
 * {@link android.os.Looper} thread.
 */
public class GeoDirHandler extends Handler implements IObserver<Object> {

    private static final int OBSERVABLE = 1 << 1;
    private static final int START_GEO = 1 << 2;
    private static final int START_DIR = 1 << 3;
    private static final int STOP_GEO = 1 << 4;
    private static final int STOP_DIR = 1 << 5;

    private static final cgeoapplication app = cgeoapplication.getInstance();

    @Override
    final public void handleMessage(final Message message) {
        if ((message.what & START_GEO) != 0) {
            app.addGeoObserver(this);
        }

        if ((message.what & START_DIR) != 0) {
            app.addDirectionObserver(this);
        }

        if ((message.what & STOP_GEO) != 0) {
            app.deleteGeoObserver(this);
        }

        if ((message.what & STOP_DIR) != 0) {
            app.deleteDirectionObserver(this);
        }

        if ((message.what & OBSERVABLE) != 0) {
            if (message.obj instanceof IGeoData) {
                updateGeoData((IGeoData) message.obj);
            } else {
                updateDirection((Float) message.obj);
            }
        }
    }

    @Override
    final public void update(final Object o) {
        obtainMessage(0, o).sendToTarget();
    }

    /**
     * Update method called when new IGeoData is available.
     *
     * @param data the new data
     */
    protected void updateGeoData(final IGeoData data) {
        // Override this in children
    }

    /**
     * Update method called when new direction data is available.
     *
     * @param direction the new direction
     */
    protected void updateDirection(final float direction) {
        // Override this in children
    }

    /**
     * Register the current GeoDirHandler for GeoData information.
     */
    public void startGeo() {
        sendEmptyMessage(START_GEO);
    }

    /**
     * Register the current GeoDirHandler for direction information if the preferences
     * allow it.
     */
    public void startDir() {
        if (Settings.isUseCompass()) {
            sendEmptyMessage(START_DIR);
        }
    }

    /**
     * Register the current GeoDirHandler for GeoData and direction information (if the
     * preferences allow it).
     */
    public void startGeoAndDir() {
        sendEmptyMessage(START_GEO | (Settings.isUseCompass() ? START_DIR : 0));
    }

    /**
     * Unregister the current GeoDirHandler for GeoData information.
     */
    public void stopGeo() {
        sendEmptyMessage(STOP_GEO);
    }

    /**
     * Unregister the current GeoDirHandler for direction information.
     */
    public void stopDir() {
        sendEmptyMessage(STOP_DIR);
    }

    /**
     * Unregister the current GeoDirHandler for GeoData and direction information.
     */
    public void stopGeoAndDir() {
        sendEmptyMessage(STOP_GEO | STOP_DIR);
    }
}


@@ -29,63 +29,8 @@
 s;%0A%0A
-import android.os.Handler;%0Aimport android.os.Message;%0A%0A
 impo
@@ -135,46 +135,61 @@
 on;%0A
+%0A
 import 
-cgeo.geocaching.utils.IObserver
+android.os.Handler;%0Aimport android.os.Message
 ;%0A%0A/
@@ -1606,17 +1606,26 @@
 Message(
-0
+OBSERVABLE
 , o).sen

Fix #1574: location was sent with the wrong "what" information