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/*
* Copyright (C) 2017 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.emergency.util;
import android.content.ComponentName;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.support.v7.preference.PreferenceManager;
import android.text.TextUtils;
import com.android.emergency.PreferenceKeys;
import com.android.emergency.edit.EditInfoActivity;
import com.android.emergency.preferences.EmergencyContactsPreference;
import com.android.internal.annotations.VisibleForTesting;
import java.util.Collections;
/** Utility methods for dealing with preferences. */
public class PreferenceUtils {
@VisibleForTesting
public static final String SETTINGS_SUGGESTION_ACTIVITY_ALIAS = ".edit.EditInfoSuggestion";
/** Returns true if there is at least one preference set. */
public static boolean hasAtLeastOnePreferenceSet(Context context) {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
for (String key : PreferenceKeys.KEYS_VIEW_EMERGENCY_INFO) {
if (!TextUtils.isEmpty(prefs.getString(key, ""))) {
return true;
}
}
return false;
}
/** Returns true if there is at least one valid (still existing) emergency contact. */
public static boolean hasAtLeastOneEmergencyContact(Context context) {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
String emergencyContactsString = "";
try {
emergencyContactsString = prefs.getString(PreferenceKeys.KEY_EMERGENCY_CONTACTS, "");
} catch (ClassCastException e) {
// Protect against b/28194605: We used to store the contacts using a string set.
// If it is a string set, ignore its value. If it is not a string set it will throw
// a ClassCastException
prefs.getStringSet(
PreferenceKeys.KEY_EMERGENCY_CONTACTS,
Collections.<String>emptySet());
}
return !EmergencyContactsPreference.deserializeAndFilter(
PreferenceKeys.KEY_EMERGENCY_CONTACTS,
context,
emergencyContactsString).isEmpty();
}
/**
* Enables or disables the settings suggestion for this application, depending on whether any
* emergency settings exist.
*/
public static void updateSettingsSuggestionState(Context context) {
int state = hasAtLeastOnePreferenceOrContactSet(context) ?
PackageManager.COMPONENT_ENABLED_STATE_DISABLED :
PackageManager.COMPONENT_ENABLED_STATE_ENABLED;
setSettingsSuggestionState(context, state);
}
/** Enables the settings suggestion for this application. */
public static void enableSettingsSuggestion(Context context) {
setSettingsSuggestionState(context, PackageManager.COMPONENT_ENABLED_STATE_ENABLED);
}
private static boolean hasAtLeastOnePreferenceOrContactSet(Context context) {
return hasAtLeastOnePreferenceSet(context) || hasAtLeastOneEmergencyContact(context);
}
private static void setSettingsSuggestionState(Context context, int state) {
String packageName = context.getPackageName();
String targetClass = packageName + SETTINGS_SUGGESTION_ACTIVITY_ALIAS;
ComponentName name = new ComponentName(packageName, targetClass);
PackageManager pm = context.getPackageManager();
pm.setComponentEnabledSetting(name, state, PackageManager.DONT_KILL_APP);
}
}
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