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/*
* Copyright (C) 2015 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.systemui.tuner;
import android.app.ActivityManager;
import android.app.AlertDialog;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.database.ContentObserver;
import android.net.Uri;
import android.os.Handler;
import android.os.Looper;
import android.provider.Settings;
import android.util.ArrayMap;
import com.android.systemui.BatteryMeterView;
import com.android.systemui.DemoMode;
import com.android.systemui.R;
import com.android.systemui.SystemUI;
import com.android.systemui.SystemUIApplication;
import com.android.systemui.settings.CurrentUserTracker;
import com.android.systemui.statusbar.phone.SystemUIDialog;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
public class TunerService extends SystemUI {
public static final String ACTION_CLEAR = "com.android.systemui.action.CLEAR_TUNER";
private final Observer mObserver = new Observer();
// Map of Uris we listen on to their settings keys.
private final ArrayMap<Uri, String> mListeningUris = new ArrayMap<>();
// Map of settings keys to the listener.
private final HashMap<String, List<Tunable>> mTunableLookup = new HashMap<>();
private ContentResolver mContentResolver;
private int mCurrentUser;
private CurrentUserTracker mUserTracker;
@Override
public void start() {
mContentResolver = mContext.getContentResolver();
putComponent(TunerService.class, this);
mCurrentUser = ActivityManager.getCurrentUser();
mUserTracker = new CurrentUserTracker(mContext) {
@Override
public void onUserSwitched(int newUserId) {
mCurrentUser = newUserId;
reloadAll();
reregisterAll();
}
};
mUserTracker.startTracking();
}
public void addTunable(Tunable tunable, String... keys) {
for (String key : keys) {
addTunable(tunable, key);
}
}
private void addTunable(Tunable tunable, String key) {
if (!mTunableLookup.containsKey(key)) {
mTunableLookup.put(key, new ArrayList<Tunable>());
}
mTunableLookup.get(key).add(tunable);
Uri uri = Settings.Secure.getUriFor(key);
if (!mListeningUris.containsKey(uri)) {
mListeningUris.put(uri, key);
mContentResolver.registerContentObserver(uri, false, mObserver, mCurrentUser);
}
// Send the first state.
String value = Settings.Secure.getStringForUser(mContentResolver, key, mCurrentUser);
tunable.onTuningChanged(key, value);
}
public void removeTunable(Tunable tunable) {
for (List<Tunable> list : mTunableLookup.values()) {
list.remove(tunable);
}
}
protected void reregisterAll() {
if (mListeningUris.size() == 0) {
return;
}
mContentResolver.unregisterContentObserver(mObserver);
for (Uri uri : mListeningUris.keySet()) {
mContentResolver.registerContentObserver(uri, false, mObserver, mCurrentUser);
}
}
public void reloadSetting(Uri uri) {
String key = mListeningUris.get(uri);
String value = Settings.Secure.getStringForUser(mContentResolver, key, mCurrentUser);
for (Tunable tunable : mTunableLookup.get(key)) {
tunable.onTuningChanged(key, value);
}
}
private void reloadAll() {
for (String key : mTunableLookup.keySet()) {
String value = Settings.Secure.getStringForUser(mContentResolver, key,
mCurrentUser);
for (Tunable tunable : mTunableLookup.get(key)) {
tunable.onTuningChanged(key, value);
}
}
}
public void clearAll() {
// A couple special cases.
Settings.Global.putString(mContentResolver, DemoMode.DEMO_MODE_ALLOWED, null);
Settings.System.putString(mContentResolver, BatteryMeterView.SHOW_PERCENT_SETTING, null);
Intent intent = new Intent(DemoMode.ACTION_DEMO);
intent.putExtra(DemoMode.EXTRA_COMMAND, DemoMode.COMMAND_EXIT);
mContext.sendBroadcast(intent);
for (String key : mTunableLookup.keySet()) {
Settings.Secure.putString(mContentResolver, key, null);
}
}
// Only used in other processes, such as the tuner.
private static TunerService sInstance;
public static TunerService get(Context context) {
SystemUIApplication sysUi = (SystemUIApplication) context.getApplicationContext();
TunerService service = sysUi.getComponent(TunerService.class);
if (service == null) {
// Can't get it as a component, must in the tuner, lets just create one for now.
return getStaticService(context);
}
return service;
}
private static TunerService getStaticService(Context context) {
if (sInstance == null) {
sInstance = new TunerService();
sInstance.mContext = context.getApplicationContext();
sInstance.mComponents = new HashMap<>();
sInstance.start();
}
return sInstance;
}
public static final void showResetRequest(final Context context, final Runnable onDisabled) {
SystemUIDialog dialog = new SystemUIDialog(context);
dialog.setMessage(R.string.remove_from_settings_prompt);
dialog.setButton(DialogInterface.BUTTON_NEGATIVE, context.getString(R.string.cancel),
(OnClickListener) null);
dialog.setButton(DialogInterface.BUTTON_POSITIVE,
context.getString(R.string.guest_exit_guest_dialog_remove), new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// Tell the tuner (in main SysUI process) to clear all its settings.
context.sendBroadcast(new Intent(TunerService.ACTION_CLEAR));
// Disable access to tuner.
TunerService.setTunerEnabled(context, false);
// Make them sit through the warning dialog again.
Settings.Secure.putInt(context.getContentResolver(),
TunerFragment.SETTING_SEEN_TUNER_WARNING, 0);
if (onDisabled != null) {
onDisabled.run();
}
}
});
dialog.show();
}
public static final void setTunerEnabled(Context context, boolean enabled) {
context.getPackageManager().setComponentEnabledSetting(
new ComponentName(context, TunerActivity.class),
enabled ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED
: PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
PackageManager.DONT_KILL_APP);
}
public static final boolean isTunerEnabled(Context context) {
return context.getPackageManager().getComponentEnabledSetting(
new ComponentName(context, TunerActivity.class))
== PackageManager.COMPONENT_ENABLED_STATE_ENABLED;
}
private class Observer extends ContentObserver {
public Observer() {
super(new Handler(Looper.getMainLooper()));
}
@Override
public void onChange(boolean selfChange, Uri uri, int userId) {
if (userId == ActivityManager.getCurrentUser()) {
reloadSetting(uri);
}
}
}
public interface Tunable {
void onTuningChanged(String key, String newValue);
}
public static class ClearReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (ACTION_CLEAR.equals(intent.getAction())) {
get(context).clearAll();
}
}
}
}
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