org.catrobat.catroid.drone.ardrone.DroneConnection.java Source code

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Here is the source code for org.catrobat.catroid.drone.ardrone.DroneConnection.java

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/*
 * Catroid: An on-device visual programming system for Android devices
 * Copyright (C) 2010-2017 The Catrobat Team
 * (<http://developer.catrobat.org/credits>)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * An additional term exception under section 7 of the GNU Affero
 * General Public License, version 3, is available at
 * http://developer.catrobat.org/license_additional_term
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.catrobat.catroid.drone.ardrone;

import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.ServiceConnection;
import android.os.IBinder;
import android.support.v4.content.LocalBroadcastManager;
import android.util.Log;

import com.parrot.freeflight.receivers.DroneConnectionChangeReceiverDelegate;
import com.parrot.freeflight.receivers.DroneConnectionChangedReceiver;
import com.parrot.freeflight.receivers.DroneReadyReceiver;
import com.parrot.freeflight.receivers.DroneReadyReceiverDelegate;
import com.parrot.freeflight.service.DroneControlService;

import org.catrobat.catroid.stage.StageResourceInterface;

public class DroneConnection
        implements StageResourceInterface, DroneReadyReceiverDelegate, DroneConnectionChangeReceiverDelegate {

    private Context context = null;

    private static final String TAG = DroneConnection.class.getSimpleName();

    protected DroneControlService droneControlService = null;
    private BroadcastReceiver droneReadyReceiver = null;
    private DroneConnectionChangedReceiver droneConnectionChangeReceiver = null;

    public DroneConnection(Context context) {
        this.context = context;
    }

    @Override
    public void initialise() throws RuntimeException {
        //TODO Drone: process return value
        prepareDroneResources();
    }

    private void prepareDroneResources() throws RuntimeException {
        Log.d(TAG, "prepareResources()");
        droneReadyReceiver = new DroneReadyReceiver(this);
        droneConnectionChangeReceiver = new DroneConnectionChangedReceiver(this);

        helpBindDroneService();
    }

    @Override
    public void start() {
        if (droneControlService != null) {
            Log.d(TAG, "droneControlService .. onResume");
            droneControlService.resume();
            DroneServiceWrapper.getInstance().setDroneService(droneControlService);
        }
        LocalBroadcastManager manager = LocalBroadcastManager.getInstance(context);
        manager.registerReceiver(droneReadyReceiver,
                new IntentFilter(DroneControlService.DRONE_STATE_READY_ACTION));
        manager.registerReceiver(droneConnectionChangeReceiver,
                new IntentFilter(DroneControlService.DRONE_CONNECTION_CHANGED_ACTION));
    }

    @Override
    public void pause() {
        if (droneControlService != null) {
            droneControlService.pause();
            DroneServiceWrapper.getInstance().setDroneService(null);
        }
        LocalBroadcastManager manager = LocalBroadcastManager.getInstance(context);
        manager.unregisterReceiver(droneReadyReceiver);
        manager.unregisterReceiver(droneConnectionChangeReceiver);
    }

    @Override
    public void destroy() {
        helpUnbindDroneService();
    }

    private void onDroneServiceConnected(IBinder service) {
        Log.d(TAG, "onDroneServiceConnected");
        droneControlService = ((DroneControlService.LocalBinder) service).getService();
        DroneServiceWrapper.getInstance().setDroneService(droneControlService);
        droneControlService.resume();
        droneControlService.requestDroneStatus();
        droneControlService.requestConfigUpdate();

        Log.d(TAG, "DroneServiceConnection");
    }

    private ServiceConnection droneServiceConnection = new ServiceConnection() {

        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
            Log.d(TAG, "Drone Connected");
            onDroneServiceConnected(service);
        }

        @Override
        public void onServiceDisconnected(ComponentName name) {
            Log.d(TAG, "Drone Disconnected");
            droneControlService = null;
        }
    };

    private void helpUnbindDroneService() {
        if (droneControlService != null) {
            context.unbindService(droneServiceConnection);
            droneServiceConnection = null;
            droneControlService = null;
        }
    }

    private void helpBindDroneService() throws RuntimeException {
        if (droneControlService == null && !context.bindService(new Intent(context, DroneControlService.class),
                this.droneServiceConnection, Context.BIND_AUTO_CREATE)) {
            throw new RuntimeException("Connection to the drone not successful");
        }
    }

    @Override
    public void onDroneReady() {
        Log.d(TAG, "onDroneReady");
    }

    @Override
    public void onDroneConnected() {
        Log.d(TAG, "onDroneConnected");
        droneControlService.requestConfigUpdate();
    }

    @Override
    public void onDroneDisconnected() {
        Log.d(TAG, "onDroneDisconnected");
        //Nothing to do here
    }
}