GTaskSyncService.java

    /*
     * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
     *
     * Licensed under the Apache License, Version 2.0 (the "License");
     * you may not use this file except in compliance with the License.
     * You may obtain a copy of the License at
     *
     *        http://www.apache.org/licenses/LICENSE-2.0
     *
     * Unless required by applicable law or agreed to in writing, software
     * distributed under the License is distributed on an "AS IS" BASIS,
     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     * See the License for the specific language governing permissions and
     * limitations under the License.
     */

    package net.micode.notes.gtask.remote;

    import android.app.Activity;
    import android.app.Service;
    import android.content.Context;
    import android.content.Intent;
    import android.os.Bundle;
    import android.os.IBinder;

    public class GTaskSyncService extends Service {
        public final static String ACTION_STRING_NAME = "sync_action_type";

        public final static int ACTION_START_SYNC = 0;

        public final static int ACTION_CANCEL_SYNC = 1;

        public final static int ACTION_INVALID = 2;

        public final static String GTASK_SERVICE_BROADCAST_NAME = "net.micode.notes.gtask.remote.gtask_sync_service";

        public final static String GTASK_SERVICE_BROADCAST_IS_SYNCING = "isSyncing";

        public final static String GTASK_SERVICE_BROADCAST_PROGRESS_MSG = "progressMsg";

        private static GTaskASyncTask mSyncTask = null;

        private static String mSyncProgress = "";

        private void startSync() {
            if (mSyncTask == null) {
                mSyncTask = new GTaskASyncTask(this, new GTaskASyncTask.OnCompleteListener() {
                    public void onComplete() {
                        mSyncTask = null;
                        sendBroadcast("");
                        stopSelf();
                    }
                });
                sendBroadcast("");
                mSyncTask.execute();
            }
        }

        private void cancelSync() {
            if (mSyncTask != null) {
                mSyncTask.cancelSync();
            }
        }

        @Override
        public void onCreate() {
            mSyncTask = null;
        }

        @Override
        public int onStartCommand(Intent intent, int flags, int startId) {
            Bundle bundle = intent.getExtras();
            if (bundle != null && bundle.containsKey(ACTION_STRING_NAME)) {
                switch (bundle.getInt(ACTION_STRING_NAME, ACTION_INVALID)) {
                    case ACTION_START_SYNC:
                        startSync();
                        break;
                    case ACTION_CANCEL_SYNC:
                        cancelSync();
                        break;
                    default:
                        break;
                }
                return START_STICKY;
            }
            return super.onStartCommand(intent, flags, startId);
        }

        @Override
        public void onLowMemory() {
            if (mSyncTask != null) {
                mSyncTask.cancelSync();
            }
        }

        public IBinder onBind(Intent intent) {
            return null;
        }

        public void sendBroadcast(String msg) {
            mSyncProgress = msg;
            Intent intent = new Intent(GTASK_SERVICE_BROADCAST_NAME);
            intent.putExtra(GTASK_SERVICE_BROADCAST_IS_SYNCING, mSyncTask != null);
            intent.putExtra(GTASK_SERVICE_BROADCAST_PROGRESS_MSG, msg);
            sendBroadcast(intent);
        }

        public static void startSync(Activity activity) {
            GTaskManager.getInstance().setActivityContext(activity);
            Intent intent = new Intent(activity, GTaskSyncService.class);
            intent.putExtra(GTaskSyncService.ACTION_STRING_NAME, GTaskSyncService.ACTION_START_SYNC);
            activity.startService(intent);
        }

        public static void cancelSync(Context context) {
            Intent intent = new Intent(context, GTaskSyncService.class);
            intent.putExtra(GTaskSyncService.ACTION_STRING_NAME, GTaskSyncService.ACTION_CANCEL_SYNC);
            context.startService(intent);
        }

        public static boolean isSyncing() {
            return mSyncTask != null;
        }

        public static String getProgressString() {
            return mSyncProgress;
        }
    }