| /* |
| * Copyright (C) 2021 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.qs; |
| |
| import android.content.Context; |
| import android.database.ContentObserver; |
| import android.hardware.display.ColorDisplayManager; |
| import android.net.Uri; |
| import android.os.Handler; |
| import android.os.HandlerExecutor; |
| import android.provider.Settings; |
| |
| import androidx.annotation.NonNull; |
| |
| import com.android.systemui.dagger.qualifiers.Background; |
| import com.android.systemui.settings.UserTracker; |
| import com.android.systemui.statusbar.policy.CallbackController; |
| import com.android.systemui.util.settings.SecureSettings; |
| |
| import java.util.ArrayList; |
| |
| import javax.inject.Inject; |
| |
| /** |
| * @hide |
| */ |
| public class ReduceBrightColorsController implements |
| CallbackController<ReduceBrightColorsController.Listener> { |
| private final ColorDisplayManager mManager; |
| private final UserTracker mUserTracker; |
| private UserTracker.Callback mCurrentUserTrackerCallback; |
| private final Handler mHandler; |
| private final ContentObserver mContentObserver; |
| private final SecureSettings mSecureSettings; |
| private final ArrayList<ReduceBrightColorsController.Listener> mListeners = new ArrayList<>(); |
| |
| @Inject |
| public ReduceBrightColorsController(UserTracker userTracker, |
| @Background Handler handler, |
| ColorDisplayManager colorDisplayManager, |
| SecureSettings secureSettings) { |
| mManager = colorDisplayManager; |
| mUserTracker = userTracker; |
| mHandler = handler; |
| mSecureSettings = secureSettings; |
| mContentObserver = new ContentObserver(mHandler) { |
| @Override |
| public void onChange(boolean selfChange, Uri uri) { |
| super.onChange(selfChange, uri); |
| final String setting = uri == null ? null : uri.getLastPathSegment(); |
| synchronized (mListeners) { |
| if (setting != null && mListeners.size() != 0) { |
| if (setting.equals(Settings.Secure.REDUCE_BRIGHT_COLORS_ACTIVATED)) { |
| for (Listener listener : mListeners) { |
| listener.onActivated(mManager.isReduceBrightColorsActivated()); |
| } |
| } |
| } |
| } |
| } |
| }; |
| |
| mCurrentUserTrackerCallback = new UserTracker.Callback() { |
| @Override |
| public void onUserChanged(int newUser, Context userContext) { |
| synchronized (mListeners) { |
| if (mListeners.size() > 0) { |
| mSecureSettings.unregisterContentObserver(mContentObserver); |
| mSecureSettings.registerContentObserverForUser( |
| Settings.Secure.getUriFor( |
| Settings.Secure.REDUCE_BRIGHT_COLORS_ACTIVATED), |
| false, mContentObserver, newUser); |
| } |
| } |
| } |
| }; |
| mUserTracker.addCallback(mCurrentUserTrackerCallback, new HandlerExecutor(handler)); |
| } |
| |
| @Override |
| public void addCallback(@NonNull Listener listener) { |
| synchronized (mListeners) { |
| if (!mListeners.contains(listener)) { |
| mListeners.add(listener); |
| if (mListeners.size() == 1) { |
| mSecureSettings.registerContentObserverForUser( |
| Settings.Secure.getUriFor( |
| Settings.Secure.REDUCE_BRIGHT_COLORS_ACTIVATED), |
| false, mContentObserver, mUserTracker.getUserId()); |
| } |
| } |
| } |
| } |
| |
| @Override |
| public void removeCallback(@androidx.annotation.NonNull Listener listener) { |
| synchronized (mListeners) { |
| if (mListeners.remove(listener) && mListeners.size() == 0) { |
| mSecureSettings.unregisterContentObserver(mContentObserver); |
| } |
| } |
| } |
| |
| /** Returns {@code true} if Reduce Bright Colors is activated */ |
| public boolean isReduceBrightColorsActivated() { |
| return mManager.isReduceBrightColorsActivated(); |
| } |
| |
| /** Sets the activation state of Reduce Bright Colors */ |
| public void setReduceBrightColorsActivated(boolean activated) { |
| mManager.setReduceBrightColorsActivated(activated); |
| } |
| |
| /** |
| * Listener invoked whenever the Reduce Bright Colors settings are changed. |
| */ |
| public interface Listener { |
| /** |
| * Listener invoked when the activated state changes. |
| * |
| * @param activated {@code true} if Reduce Bright Colors is activated. |
| */ |
| default void onActivated(boolean activated) { |
| } |
| } |
| } |