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/*
* Copyright (C) 2014 The CyanogenMod Project
*
* 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 com.android.systemui.statusbar.policy;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.database.ContentObserver;
import android.database.Cursor;
import android.net.Uri;
import android.os.Handler;
import android.provider.Settings;
import android.util.Log;
import java.util.ArrayList;
public class WeatherControllerImpl implements WeatherController {
private static final String TAG = WeatherController.class.getSimpleName();
private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);
public static final ComponentName COMPONENT_WEATHER_FORECAST = new ComponentName(
"com.cyanogenmod.lockclock", "com.cyanogenmod.lockclock.weather.ForecastActivity");
public static final String ACTION_UPDATE_FINISHED
= "com.cyanogenmod.lockclock.action.WEATHER_UPDATE_FINISHED";
public static final String EXTRA_UPDATE_CANCELLED = "update_cancelled";
public static final String ACTION_FORCE_WEATHER_UPDATE
= "com.cyanogenmod.lockclock.action.FORCE_WEATHER_UPDATE";
public static final Uri CURRENT_WEATHER_URI
= Uri.parse("content://com.cyanogenmod.lockclock.weather.provider/weather/current");
public static final String[] WEATHER_PROJECTION = new String[]{
"temperature",
"city",
"condition"
};
private final ArrayList<Callback> mCallbacks = new ArrayList<Callback>();
private final Receiver mReceiver = new Receiver();
private final Context mContext;
private WeatherInfo mCachedInfo = new WeatherInfo();
public WeatherControllerImpl(Context context) {
mContext = context;
mContext.getSystemService(Context.CONNECTIVITY_SERVICE);
queryWeather();
final IntentFilter filter = new IntentFilter();
filter.addAction(ACTION_UPDATE_FINISHED);
mContext.registerReceiver(mReceiver, filter);
}
public void addCallback(Callback callback) {
if (callback == null || mCallbacks.contains(callback)) return;
if (DEBUG) Log.d(TAG, "addCallback " + callback);
mCallbacks.add(callback);
callback.onWeatherChanged(mCachedInfo); // immediately update with current values
}
public void removeCallback(Callback callback) {
if (callback == null) return;
if (DEBUG) Log.d(TAG, "removeCallback " + callback);
mCallbacks.remove(callback);
}
@Override
public WeatherInfo getWeatherInfo() {
return mCachedInfo;
}
private void queryWeather() {
Cursor c = mContext.getContentResolver().query(CURRENT_WEATHER_URI, WEATHER_PROJECTION,
null, null, null);
if (c == null) {
if(DEBUG) Log.e(TAG, "cursor was null for temperature, forcing weather update");
mContext.sendBroadcast(new Intent(ACTION_FORCE_WEATHER_UPDATE));
} else {
try {
c.moveToFirst();
mCachedInfo.temp = c.getString(0);
mCachedInfo.city = c.getString(1);
mCachedInfo.condition = c.getString(2);
} finally {
c.close();
}
}
}
private void fireCallback() {
for (Callback callback : mCallbacks) {
callback.onWeatherChanged(mCachedInfo);
}
}
private final class Receiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (DEBUG) Log.d(TAG, "onReceive " + intent.getAction());
if (intent.hasExtra(EXTRA_UPDATE_CANCELLED)) {
if (intent.getBooleanExtra(EXTRA_UPDATE_CANCELLED, false)) {
// no update
return;
}
}
queryWeather();
fireCallback();
}
}
}
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