| /* |
| * 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.systemui.util; |
| |
| import static android.view.Display.DEFAULT_DISPLAY; |
| |
| import android.Manifest; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.pm.PackageManager; |
| import android.provider.Settings; |
| import android.view.View; |
| |
| import com.android.systemui.shared.system.QuickStepContract; |
| import com.android.systemui.statusbar.CommandQueue; |
| |
| import java.util.List; |
| import java.util.function.Consumer; |
| |
| public class Utils { |
| |
| /** |
| * Allows lambda iteration over a list. It is done in reverse order so it is safe |
| * to add or remove items during the iteration. Skips over null items. |
| */ |
| public static <T> void safeForeach(List<T> list, Consumer<T> c) { |
| for (int i = list.size() - 1; i >= 0; i--) { |
| T item = list.get(i); |
| if (item != null) { |
| c.accept(item); |
| } |
| } |
| } |
| |
| /** |
| * Sets the visibility of an UI element according to the DISABLE_* flags in |
| * {@link android.app.StatusBarManager}. |
| */ |
| public static class DisableStateTracker implements CommandQueue.Callbacks, |
| View.OnAttachStateChangeListener { |
| private final int mMask1; |
| private final int mMask2; |
| private final CommandQueue mCommandQueue; |
| private View mView; |
| private boolean mDisabled; |
| |
| public DisableStateTracker(int disableMask, int disable2Mask, CommandQueue commandQueue) { |
| mMask1 = disableMask; |
| mMask2 = disable2Mask; |
| mCommandQueue = commandQueue; |
| } |
| |
| @Override |
| public void onViewAttachedToWindow(View v) { |
| mView = v; |
| mCommandQueue.addCallback(this); |
| } |
| |
| @Override |
| public void onViewDetachedFromWindow(View v) { |
| mCommandQueue.removeCallback(this); |
| mView = null; |
| } |
| |
| /** |
| * Sets visibility of this {@link View} given the states passed from |
| * {@link com.android.systemui.statusbar.CommandQueue.Callbacks#disable(int, int, int)}. |
| */ |
| @Override |
| public void disable(int displayId, int state1, int state2, boolean animate) { |
| if (displayId != mView.getDisplay().getDisplayId()) { |
| return; |
| } |
| final boolean disabled = ((state1 & mMask1) != 0) || ((state2 & mMask2) != 0); |
| if (disabled == mDisabled) return; |
| mDisabled = disabled; |
| mView.setVisibility(disabled ? View.GONE : View.VISIBLE); |
| } |
| |
| /** @return {@code true} if and only if this {@link View} is currently disabled */ |
| public boolean isDisabled() { |
| return mDisabled; |
| } |
| } |
| |
| |
| /** |
| * Returns {@code true} iff the package {@code packageName} is a headless remote display |
| * provider, i.e, that the package holds the privileged {@code REMOTE_DISPLAY_PROVIDER} |
| * permission and that it doesn't host a launcher icon. |
| */ |
| public static boolean isHeadlessRemoteDisplayProvider(PackageManager pm, String packageName) { |
| if (pm.checkPermission(Manifest.permission.REMOTE_DISPLAY_PROVIDER, packageName) |
| != PackageManager.PERMISSION_GRANTED) { |
| return false; |
| } |
| |
| Intent homeIntent = new Intent(Intent.ACTION_MAIN); |
| homeIntent.addCategory(Intent.CATEGORY_LAUNCHER); |
| homeIntent.setPackage(packageName); |
| |
| return pm.queryIntentActivities(homeIntent, 0).isEmpty(); |
| } |
| |
| /** |
| * Returns {@code true} if the navMode is that of |
| * {@link android.view.WindowManagerPolicyConstants#NAV_BAR_MODE_GESTURAL} AND |
| * the context is that of the default display |
| */ |
| public static boolean isGesturalModeOnDefaultDisplay(Context context, int navMode) { |
| return context.getDisplayId() == DEFAULT_DISPLAY |
| && QuickStepContract.isGesturalMode(navMode); |
| } |
| |
| /** |
| * Allow the media player to be shown in the QS area, controlled by 2 flags. |
| */ |
| public static boolean useQsMediaPlayer(Context context) { |
| int flag = Settings.System.getInt(context.getContentResolver(), "qs_media_player", 0); |
| return flag > 0; |
| } |
| } |