| /* |
| * 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.quickstep; |
| |
| import static com.android.launcher3.util.PackageManagerHelper.getPackageFilter; |
| |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.res.Resources; |
| import android.util.Log; |
| |
| import com.android.launcher3.util.MainThreadInitializedObject; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Observer for the resource config that specifies the navigation bar mode. |
| */ |
| public class SysUINavigationMode { |
| |
| public enum Mode { |
| THREE_BUTTONS(false, 0), |
| TWO_BUTTONS(true, 1), |
| NO_BUTTON(true, 2); |
| |
| public final boolean hasGestures; |
| public final int resValue; |
| |
| Mode(boolean hasGestures, int resValue) { |
| this.hasGestures = hasGestures; |
| this.resValue = resValue; |
| } |
| } |
| |
| public static Mode getMode(Context context) { |
| return INSTANCE.get(context).getMode(); |
| } |
| |
| public static MainThreadInitializedObject<SysUINavigationMode> INSTANCE = |
| new MainThreadInitializedObject<>(SysUINavigationMode::new); |
| |
| private static final String TAG = "SysUINavigationMode"; |
| |
| private final String ACTION_OVERLAY_CHANGED = "android.intent.action.OVERLAY_CHANGED"; |
| private static final String NAV_BAR_INTERACTION_MODE_RES_NAME = |
| "config_navBarInteractionMode"; |
| |
| private final Context mContext; |
| private Mode mMode; |
| |
| private final List<NavigationModeChangeListener> mChangeListeners = new ArrayList<>(); |
| |
| public SysUINavigationMode(Context context) { |
| mContext = context; |
| initializeMode(); |
| |
| mContext.registerReceiver(new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| Mode oldMode = mMode; |
| initializeMode(); |
| if (mMode != oldMode) { |
| dispatchModeChange(); |
| } |
| } |
| }, getPackageFilter("android", ACTION_OVERLAY_CHANGED)); |
| } |
| |
| private void initializeMode() { |
| int modeInt = getSystemIntegerRes(mContext, NAV_BAR_INTERACTION_MODE_RES_NAME); |
| for(Mode m : Mode.values()) { |
| if (m.resValue == modeInt) { |
| mMode = m; |
| } |
| } |
| } |
| |
| private void dispatchModeChange() { |
| for (NavigationModeChangeListener listener : mChangeListeners) { |
| listener.onNavigationModeChanged(mMode); |
| } |
| } |
| |
| public Mode addModeChangeListener(NavigationModeChangeListener listener) { |
| mChangeListeners.add(listener); |
| return mMode; |
| } |
| |
| public void removeModeChangeListener(NavigationModeChangeListener listener) { |
| mChangeListeners.remove(listener); |
| } |
| |
| public Mode getMode() { |
| return mMode; |
| } |
| |
| private static int getSystemIntegerRes(Context context, String resName) { |
| Resources res = context.getResources(); |
| int resId = res.getIdentifier(resName, "integer", "android"); |
| |
| if (resId != 0) { |
| return res.getInteger(resId); |
| } else { |
| Log.e(TAG, "Failed to get system resource ID. Incompatible framework version?"); |
| return -1; |
| } |
| } |
| |
| public interface NavigationModeChangeListener { |
| |
| void onNavigationModeChanged(Mode newMode); |
| } |
| } |