/*
 * Copyright (C) 2009 The Android Open Source 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.alarmclock;

import android.media.AudioManager;
import android.os.Bundle;
import android.preference.CheckBoxPreference;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceScreen;
import android.provider.Settings;

/**
 * Settings for the Alarm Clock.
 */
public class SettingsActivity extends PreferenceActivity {

    private static final int ALARM_STREAM_TYPE_BIT =
            1 << AudioManager.STREAM_ALARM;
    
    private static final String KEY_ALARM_IN_SILENT_MODE =
            "alarm_in_silent_mode";
    private CheckBoxPreference mAlarmInSilentModePref;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        addPreferencesFromResource(R.xml.settings);
        
        mAlarmInSilentModePref =
                (CheckBoxPreference) findPreference(KEY_ALARM_IN_SILENT_MODE);
    }

    @Override
    protected void onResume() {
        super.onResume();
        refresh();
    }

    @Override
    public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen,
            Preference preference) {
        
        if (preference == mAlarmInSilentModePref) {
            
            int ringerModeStreamTypes = Settings.System.getInt(
                    getContentResolver(),
                    Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0);
            
            if (mAlarmInSilentModePref.isChecked()) {
                ringerModeStreamTypes &= ~ALARM_STREAM_TYPE_BIT;
            } else {
                ringerModeStreamTypes |= ALARM_STREAM_TYPE_BIT;
            }
            
            Settings.System.putInt(getContentResolver(),
                    Settings.System.MODE_RINGER_STREAMS_AFFECTED,
                    ringerModeStreamTypes);
            
            return true;
        }
        
        return super.onPreferenceTreeClick(preferenceScreen, preference);
    }

    private void refresh() {
        int silentModeStreams = Settings.System.getInt(getContentResolver(),
                Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0);
        mAlarmInSilentModePref.setChecked(
                (silentModeStreams & ALARM_STREAM_TYPE_BIT) == 0);
    }
    
}