src/com/android/deskclock/SettingsActivity.java - platform/packages/apps/DeskClock - Git at Google

 /*
  * 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.deskclock;

 import android.app.ActionBar;
 import android.content.Intent;
 import android.content.res.Resources;
 import android.media.AudioManager;
 import android.os.Bundle;
 import android.preference.CheckBoxPreference;
 import android.preference.ListPreference;
 import android.preference.Preference;
 import android.preference.PreferenceActivity;
 import android.preference.PreferenceScreen;
 import android.provider.Settings;
 import android.text.format.DateUtils;
 import android.view.Menu;
 import android.view.MenuItem;

 import com.android.deskclock.worldclock.Cities;

 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import java.util.TimeZone;

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

     private static final int ALARM_STREAM_TYPE_BIT =
             1 << AudioManager.STREAM_ALARM;

     static final String KEY_ALARM_IN_SILENT_MODE =
             "alarm_in_silent_mode";
     static final String KEY_ALARM_SNOOZE =
             "snooze_duration";
     static final String KEY_VOLUME_BEHAVIOR =
             "volume_button_setting";
     static final String KEY_AUTO_SILENCE =
             "auto_silence";
     public static final String KEY_CLOCK_STYLE =
             "clock_style";
     public static final String KEY_HOME_TZ =
             "home_time_zone";
     public static final String KEY_AUTO_HOME_CLOCK =
             "automatic_home_clock";
     static final String KEY_VOLUME_BUTTONS =
             "volume_button_setting";

     // Old and new default preferences, needed to switch the default on upgrade
     public static final String DEFAULT_VOLUME_BEHAVIOR = "0";
     public static final String OLD_DEFAULT_VOLUME_BEHAVIOR = "1";

     private static CharSequence[][] mTimezones;
     private long mTime;


     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         addPreferencesFromResource(R.xml.settings);

         ActionBar actionBar = getActionBar();
         if (actionBar != null) {
             actionBar.setDisplayOptions(ActionBar.DISPLAY_HOME_AS_UP, ActionBar.DISPLAY_HOME_AS_UP);
         }

         // We don't want to reconstruct the timezone list every single time
         // onResume() is called so we do it once in onCreate
         ListPreference listPref;
         listPref = (ListPreference) findPreference(KEY_HOME_TZ);
         if (mTimezones == null) {
             mTime = System.currentTimeMillis();
             mTimezones = getAllTimezones();
         }

         listPref.setEntryValues(mTimezones[0]);
         listPref.setEntries(mTimezones[1]);
         listPref.setSummary(listPref.getEntry());
         listPref.setOnPreferenceChangeListener(this);
     }

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

     @Override
     public boolean onOptionsItemSelected (MenuItem item) {
         switch (item.getItemId()) {
             case android.R.id.home:
                 finish();
                 return true;
             default:
                 break;
         }
         return super.onOptionsItemSelected(item);
     }


     @Override
     public boolean onCreateOptionsMenu (Menu menu) {
         getMenuInflater().inflate(R.menu.settings_menu, menu);
         MenuItem help = menu.findItem(R.id.menu_item_help);
         if (help != null) {
             Utils.prepareHelpMenuItem(this, help);
         }
         return super.onCreateOptionsMenu(menu);
     }

     @Override
     public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen,
             Preference preference) {
         if (KEY_ALARM_IN_SILENT_MODE.equals(preference.getKey())) {
             CheckBoxPreference pref = (CheckBoxPreference) preference;
             int ringerModeStreamTypes = Settings.System.getInt(
                     getContentResolver(),
                     Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0);

             if (pref.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);
     }

     @Override
     public boolean onPreferenceChange(Preference pref, Object newValue) {
         if (KEY_AUTO_SILENCE.equals(pref.getKey())) {
             final ListPreference listPref = (ListPreference) pref;
             String delay = (String) newValue;
             updateAutoSnoozeSummary(listPref, delay);
         } else if (KEY_CLOCK_STYLE.equals(pref.getKey())) {
             final ListPreference listPref = (ListPreference) pref;
             final int idx = listPref.findIndexOfValue((String) newValue);
             listPref.setSummary(listPref.getEntries()[idx]);
         } else if (KEY_HOME_TZ.equals(pref.getKey())) {
             final ListPreference listPref = (ListPreference) pref;
             final int idx = listPref.findIndexOfValue((String) newValue);
             listPref.setSummary(listPref.getEntries()[idx]);
             notifyHomeTimeZoneChanged();
         } else if (KEY_AUTO_HOME_CLOCK.equals(pref.getKey())) {
             boolean state =((CheckBoxPreference) pref).isChecked();
             Preference homeTimeZone = findPreference(KEY_HOME_TZ);
             homeTimeZone.setEnabled(!state);
             notifyHomeTimeZoneChanged();
         } else if (KEY_VOLUME_BUTTONS.equals(pref.getKey())) {
             final ListPreference listPref = (ListPreference) pref;
             final int idx = listPref.findIndexOfValue((String) newValue);
             listPref.setSummary(listPref.getEntries()[idx]);
         }
         return true;
     }

     private void updateAutoSnoozeSummary(ListPreference listPref,
             String delay) {
         int i = Integer.parseInt(delay);
         if (i == -1) {
             listPref.setSummary(R.string.auto_silence_never);
         } else {
             listPref.setSummary(getString(R.string.auto_silence_summary, i));
         }
     }

     private void notifyHomeTimeZoneChanged() {
         Intent i = new Intent(Cities.WORLDCLOCK_UPDATE_INTENT);
         sendBroadcast(i);
     }


     private void refresh() {
         ListPreference listPref = (ListPreference) findPreference(KEY_AUTO_SILENCE);
         String delay = listPref.getValue();
         updateAutoSnoozeSummary(listPref, delay);
         listPref.setOnPreferenceChangeListener(this);

         listPref = (ListPreference) findPreference(KEY_CLOCK_STYLE);
         listPref.setSummary(listPref.getEntry());
         listPref.setOnPreferenceChangeListener(this);

         Preference pref = findPreference(KEY_AUTO_HOME_CLOCK);
         boolean state =((CheckBoxPreference) pref).isChecked();
         pref.setOnPreferenceChangeListener(this);

         listPref = (ListPreference)findPreference(KEY_HOME_TZ);
         listPref.setEnabled(state);
         listPref.setSummary(listPref.getEntry());

         listPref = (ListPreference) findPreference(KEY_VOLUME_BUTTONS);
         listPref.setSummary(listPref.getEntry());
         listPref.setOnPreferenceChangeListener(this);

         SnoozeLengthDialog snoozePref = (SnoozeLengthDialog) findPreference(KEY_ALARM_SNOOZE);
         snoozePref.setSummary();
     }

     private class TimeZoneRow implements Comparable<TimeZoneRow> {
         private static final boolean SHOW_DAYLIGHT_SAVINGS_INDICATOR = false;

         public final String mId;
         public final String mDisplayName;
         public final int mOffset;

         public TimeZoneRow(String id, String name) {
             mId = id;
             TimeZone tz = TimeZone.getTimeZone(id);
             boolean useDaylightTime = tz.useDaylightTime();
             mOffset = tz.getOffset(mTime);
             mDisplayName = buildGmtDisplayName(id, name, useDaylightTime);
         }

         @Override
         public int compareTo(TimeZoneRow another) {
             return mOffset - another.mOffset;
         }

         public String buildGmtDisplayName(String id, String displayName, boolean useDaylightTime) {
             int p = Math.abs(mOffset);
             StringBuilder name = new StringBuilder("(GMT");
             name.append(mOffset < 0 ? '-' : '+');

             name.append(p / DateUtils.HOUR_IN_MILLIS);
             name.append(':');

             int min = p / 60000;
             min %= 60;

             if (min < 10) {
                 name.append('0');
             }
             name.append(min);
             name.append(") ");
             name.append(displayName);
             if (useDaylightTime && SHOW_DAYLIGHT_SAVINGS_INDICATOR) {
                 name.append(" \u2600"); // Sun symbol
             }
             return name.toString();
         }
     }


     /**
      * Returns an array of ids/time zones. This returns a double indexed array
      * of ids and time zones for Calendar. It is an inefficient method and
      * shouldn't be called often, but can be used for one time generation of
      * this list.
      *
      * @return double array of tz ids and tz names
      */
     public CharSequence[][] getAllTimezones() {
         Resources resources = this.getResources();
         String[] ids = resources.getStringArray(R.array.timezone_values);
         String[] labels = resources.getStringArray(R.array.timezone_labels);
         if (ids.length != labels.length) {
             Log.wtf("Timezone ids and labels have different length!");
         }
         List<TimeZoneRow> timezones = new ArrayList<TimeZoneRow>();
         for (int i = 0; i < ids.length; i++) {
             timezones.add(new TimeZoneRow(ids[i], labels[i]));
         }
         Collections.sort(timezones);

         CharSequence[][] timeZones = new CharSequence[2][timezones.size()];
         int i = 0;
         for (TimeZoneRow row : timezones) {
             timeZones[0][i] = row.mId;
             timeZones[1][i++] = row.mDisplayName;
         }
         return timeZones;
     }

 }
	/*
	* 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.deskclock;

	import android.app.ActionBar;
	import android.content.Intent;
	import android.content.res.Resources;
	import android.media.AudioManager;
	import android.os.Bundle;
	import android.preference.CheckBoxPreference;
	import android.preference.ListPreference;
	import android.preference.Preference;
	import android.preference.PreferenceActivity;
	import android.preference.PreferenceScreen;
	import android.provider.Settings;
	import android.text.format.DateUtils;
	import android.view.Menu;
	import android.view.MenuItem;

	import com.android.deskclock.worldclock.Cities;

	import java.util.ArrayList;
	import java.util.Collections;
	import java.util.List;
	import java.util.TimeZone;

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

	private static final int ALARM_STREAM_TYPE_BIT =
	1 << AudioManager.STREAM_ALARM;

	static final String KEY_ALARM_IN_SILENT_MODE =
	"alarm_in_silent_mode";
	static final String KEY_ALARM_SNOOZE =
	"snooze_duration";
	static final String KEY_VOLUME_BEHAVIOR =
	"volume_button_setting";
	static final String KEY_AUTO_SILENCE =
	"auto_silence";
	public static final String KEY_CLOCK_STYLE =
	"clock_style";
	public static final String KEY_HOME_TZ =
	"home_time_zone";
	public static final String KEY_AUTO_HOME_CLOCK =
	"automatic_home_clock";
	static final String KEY_VOLUME_BUTTONS =
	"volume_button_setting";

	// Old and new default preferences, needed to switch the default on upgrade
	public static final String DEFAULT_VOLUME_BEHAVIOR = "0";
	public static final String OLD_DEFAULT_VOLUME_BEHAVIOR = "1";

	private static CharSequence[][] mTimezones;
	private long mTime;


	@Override
	protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	addPreferencesFromResource(R.xml.settings);

	ActionBar actionBar = getActionBar();
	if (actionBar != null) {
	actionBar.setDisplayOptions(ActionBar.DISPLAY_HOME_AS_UP, ActionBar.DISPLAY_HOME_AS_UP);
	}

	// We don't want to reconstruct the timezone list every single time
	// onResume() is called so we do it once in onCreate
	ListPreference listPref;
	listPref = (ListPreference) findPreference(KEY_HOME_TZ);
	if (mTimezones == null) {
	mTime = System.currentTimeMillis();
	mTimezones = getAllTimezones();
	}

	listPref.setEntryValues(mTimezones[0]);
	listPref.setEntries(mTimezones[1]);
	listPref.setSummary(listPref.getEntry());
	listPref.setOnPreferenceChangeListener(this);
	}

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

	@Override
	public boolean onOptionsItemSelected (MenuItem item) {
	switch (item.getItemId()) {
	case android.R.id.home:
	finish();
	return true;
	default:
	break;
	}
	return super.onOptionsItemSelected(item);
	}


	@Override
	public boolean onCreateOptionsMenu (Menu menu) {
	getMenuInflater().inflate(R.menu.settings_menu, menu);
	MenuItem help = menu.findItem(R.id.menu_item_help);
	if (help != null) {
	Utils.prepareHelpMenuItem(this, help);
	}
	return super.onCreateOptionsMenu(menu);
	}

	@Override
	public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen,
	Preference preference) {
	if (KEY_ALARM_IN_SILENT_MODE.equals(preference.getKey())) {
	CheckBoxPreference pref = (CheckBoxPreference) preference;
	int ringerModeStreamTypes = Settings.System.getInt(
	getContentResolver(),
	Settings.System.MODE_RINGER_STREAMS_AFFECTED, 0);

	if (pref.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);
	}

	@Override
	public boolean onPreferenceChange(Preference pref, Object newValue) {
	if (KEY_AUTO_SILENCE.equals(pref.getKey())) {
	final ListPreference listPref = (ListPreference) pref;
	String delay = (String) newValue;
	updateAutoSnoozeSummary(listPref, delay);
	} else if (KEY_CLOCK_STYLE.equals(pref.getKey())) {
	final ListPreference listPref = (ListPreference) pref;
	final int idx = listPref.findIndexOfValue((String) newValue);
	listPref.setSummary(listPref.getEntries()[idx]);
	} else if (KEY_HOME_TZ.equals(pref.getKey())) {
	final ListPreference listPref = (ListPreference) pref;
	final int idx = listPref.findIndexOfValue((String) newValue);
	listPref.setSummary(listPref.getEntries()[idx]);
	notifyHomeTimeZoneChanged();
	} else if (KEY_AUTO_HOME_CLOCK.equals(pref.getKey())) {
	boolean state =((CheckBoxPreference) pref).isChecked();
	Preference homeTimeZone = findPreference(KEY_HOME_TZ);
	homeTimeZone.setEnabled(!state);
	notifyHomeTimeZoneChanged();
	} else if (KEY_VOLUME_BUTTONS.equals(pref.getKey())) {
	final ListPreference listPref = (ListPreference) pref;
	final int idx = listPref.findIndexOfValue((String) newValue);
	listPref.setSummary(listPref.getEntries()[idx]);
	}
	return true;
	}

	private void updateAutoSnoozeSummary(ListPreference listPref,
	String delay) {
	int i = Integer.parseInt(delay);
	if (i == -1) {
	listPref.setSummary(R.string.auto_silence_never);
	} else {
	listPref.setSummary(getString(R.string.auto_silence_summary, i));
	}
	}

	private void notifyHomeTimeZoneChanged() {
	Intent i = new Intent(Cities.WORLDCLOCK_UPDATE_INTENT);
	sendBroadcast(i);
	}


	private void refresh() {
	ListPreference listPref = (ListPreference) findPreference(KEY_AUTO_SILENCE);
	String delay = listPref.getValue();
	updateAutoSnoozeSummary(listPref, delay);
	listPref.setOnPreferenceChangeListener(this);

	listPref = (ListPreference) findPreference(KEY_CLOCK_STYLE);
	listPref.setSummary(listPref.getEntry());
	listPref.setOnPreferenceChangeListener(this);

	Preference pref = findPreference(KEY_AUTO_HOME_CLOCK);
	boolean state =((CheckBoxPreference) pref).isChecked();
	pref.setOnPreferenceChangeListener(this);

	listPref = (ListPreference)findPreference(KEY_HOME_TZ);
	listPref.setEnabled(state);
	listPref.setSummary(listPref.getEntry());

	listPref = (ListPreference) findPreference(KEY_VOLUME_BUTTONS);
	listPref.setSummary(listPref.getEntry());
	listPref.setOnPreferenceChangeListener(this);

	SnoozeLengthDialog snoozePref = (SnoozeLengthDialog) findPreference(KEY_ALARM_SNOOZE);
	snoozePref.setSummary();
	}

	private class TimeZoneRow implements Comparable<TimeZoneRow> {
	private static final boolean SHOW_DAYLIGHT_SAVINGS_INDICATOR = false;

	public final String mId;
	public final String mDisplayName;
	public final int mOffset;

	public TimeZoneRow(String id, String name) {
	mId = id;
	TimeZone tz = TimeZone.getTimeZone(id);
	boolean useDaylightTime = tz.useDaylightTime();
	mOffset = tz.getOffset(mTime);
	mDisplayName = buildGmtDisplayName(id, name, useDaylightTime);
	}

	@Override
	public int compareTo(TimeZoneRow another) {
	return mOffset - another.mOffset;
	}

	public String buildGmtDisplayName(String id, String displayName, boolean useDaylightTime) {
	int p = Math.abs(mOffset);
	StringBuilder name = new StringBuilder("(GMT");
	name.append(mOffset < 0 ? '-' : '+');

	name.append(p / DateUtils.HOUR_IN_MILLIS);
	name.append(':');

	int min = p / 60000;
	min %= 60;

	if (min < 10) {
	name.append('0');
	}
	name.append(min);
	name.append(") ");
	name.append(displayName);
	if (useDaylightTime && SHOW_DAYLIGHT_SAVINGS_INDICATOR) {
	name.append(" \u2600"); // Sun symbol
	}
	return name.toString();
	}
	}


	/**
	* Returns an array of ids/time zones. This returns a double indexed array
	* of ids and time zones for Calendar. It is an inefficient method and
	* shouldn't be called often, but can be used for one time generation of
	* this list.
	*
	* @return double array of tz ids and tz names
	*/
	public CharSequence[][] getAllTimezones() {
	Resources resources = this.getResources();
	String[] ids = resources.getStringArray(R.array.timezone_values);
	String[] labels = resources.getStringArray(R.array.timezone_labels);
	if (ids.length != labels.length) {
	Log.wtf("Timezone ids and labels have different length!");
	}
	List<TimeZoneRow> timezones = new ArrayList<TimeZoneRow>();
	for (int i = 0; i < ids.length; i++) {
	timezones.add(new TimeZoneRow(ids[i], labels[i]));
	}
	Collections.sort(timezones);

	CharSequence[][] timeZones = new CharSequence[2][timezones.size()];
	int i = 0;
	for (TimeZoneRow row : timezones) {
	timeZones[0][i] = row.mId;
	timeZones[1][i++] = row.mDisplayName;
	}
	return timeZones;
	}

	}