| /* |
| * Copyright (C) 2019 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.settings.core; |
| |
| import static android.view.WindowManager.LayoutParams.SYSTEM_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS; |
| |
| import static androidx.lifecycle.Lifecycle.Event.ON_START; |
| import static androidx.lifecycle.Lifecycle.Event.ON_STOP; |
| |
| import android.app.Activity; |
| import android.view.Window; |
| import android.view.WindowManager; |
| |
| import androidx.annotation.VisibleForTesting; |
| import androidx.lifecycle.LifecycleObserver; |
| import androidx.lifecycle.OnLifecycleEvent; |
| |
| import com.android.settings.development.OverlaySettingsPreferenceController; |
| |
| |
| /** |
| * A mixin that adds window flag to prevent non-system overlays showing on top of Settings |
| * activities. |
| */ |
| public class HideNonSystemOverlayMixin implements LifecycleObserver { |
| |
| private final Activity mActivity; |
| |
| public HideNonSystemOverlayMixin(Activity activity) { |
| mActivity = activity; |
| } |
| |
| @VisibleForTesting |
| boolean isEnabled() { |
| return !OverlaySettingsPreferenceController.isOverlaySettingsEnabled(mActivity); |
| } |
| |
| @OnLifecycleEvent(ON_START) |
| public void onStart() { |
| if (mActivity == null || !isEnabled()) { |
| return; |
| } |
| mActivity.getWindow().addSystemFlags(SYSTEM_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS); |
| android.util.EventLog.writeEvent(0x534e4554, "120484087", -1, ""); |
| } |
| |
| |
| @OnLifecycleEvent(ON_STOP) |
| public void onStop() { |
| if (mActivity == null || !isEnabled()) { |
| return; |
| } |
| final Window window = mActivity.getWindow(); |
| final WindowManager.LayoutParams attrs = window.getAttributes(); |
| attrs.privateFlags &= ~SYSTEM_FLAG_HIDE_NON_SYSTEM_OVERLAY_WINDOWS; |
| window.setAttributes(attrs); |
| } |
| } |