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      1 /*
      2  * Copyright (C) 2018 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.car.carlauncher;
     18 
     19 import android.annotation.Nullable;
     20 import android.car.CarNotConnectedException;
     21 import android.car.content.pm.CarPackageManager;
     22 import android.content.Context;
     23 import android.content.Intent;
     24 import android.content.pm.LauncherActivityInfo;
     25 import android.content.pm.LauncherApps;
     26 import android.content.pm.PackageManager;
     27 import android.graphics.ColorMatrix;
     28 import android.graphics.ColorMatrixColorFilter;
     29 import android.graphics.drawable.Drawable;
     30 import android.os.Process;
     31 import android.util.Log;
     32 
     33 import java.util.ArrayList;
     34 import java.util.Comparator;
     35 import java.util.List;
     36 
     37 /**
     38  * Util class that contains helper method used by app launcher classes.
     39  */
     40 class AppLauncherUtils {
     41 
     42     private static final String TAG = "AppLauncherUtils";
     43 
     44     private AppLauncherUtils() {
     45     }
     46 
     47     /**
     48      * Comparator for {@link AppMetaData} that sorts the list
     49      * by the "displayName" property in ascending order.
     50      */
     51     static final Comparator<AppMetaData> ALPHABETICAL_COMPARATOR = Comparator
     52             .comparing(AppMetaData::getDisplayName, String::compareToIgnoreCase);
     53 
     54     /**
     55      * Helper method that launches the app given the app's AppMetaData.
     56      *
     57      * @param app the requesting app's AppMetaData
     58      */
     59     static void launchApp(Context context, AppMetaData app) {
     60         Intent intent =
     61                 context.getPackageManager().getLaunchIntentForPackage(app.getPackageName());
     62         context.startActivity(intent);
     63     }
     64 
     65     /**
     66      * Converts a {@link Drawable} to grey scale.
     67      *
     68      * @param drawable the original drawable
     69      * @return the grey scale drawable
     70      */
     71     static Drawable toGrayscale(Drawable drawable) {
     72         ColorMatrix matrix = new ColorMatrix();
     73         matrix.setSaturation(0);
     74         ColorMatrixColorFilter filter = new ColorMatrixColorFilter(matrix);
     75         // deep copy the original drawable
     76         Drawable newDrawable = drawable.getConstantState().newDrawable().mutate();
     77         newDrawable.setColorFilter(filter);
     78         return newDrawable;
     79     }
     80 
     81     /**
     82      * Gets all apps that support launching from launcher in unsorted order.
     83      *
     84      * @param launcherApps      The {@link LauncherApps} system service
     85      * @param carPackageManager The {@link CarPackageManager} system service
     86      * @param packageManager    The {@link PackageManager} system service
     87      * @return a list of all apps' metadata
     88      */
     89     @Nullable
     90     static List<AppMetaData> getAllLaunchableApps(
     91             LauncherApps launcherApps,
     92             CarPackageManager carPackageManager,
     93             PackageManager packageManager) {
     94 
     95         if (launcherApps == null || carPackageManager == null || packageManager == null) {
     96             return null;
     97         }
     98 
     99         List<AppMetaData> apps = new ArrayList<>();
    100 
    101         Intent intent = new Intent(Intent.ACTION_MAIN, null);
    102         intent.addCategory(Intent.CATEGORY_LAUNCHER);
    103 
    104         List<LauncherActivityInfo> availableActivities =
    105                 launcherApps.getActivityList(null, Process.myUserHandle());
    106         for (LauncherActivityInfo info : availableActivities) {
    107             String packageName = info.getComponentName().getPackageName();
    108             boolean isDistractionOptimized =
    109                     isActivityDistractionOptimized(carPackageManager, packageName, info.getName());
    110 
    111             AppMetaData app = new AppMetaData(
    112                     info.getLabel(),
    113                     packageName,
    114                     info.getApplicationInfo().loadIcon(packageManager),
    115                     isDistractionOptimized);
    116             apps.add(app);
    117         }
    118         return apps;
    119     }
    120 
    121     /**
    122      * Gets if an activity is distraction optimized.
    123      *
    124      * @param carPackageManager The {@link CarPackageManager} system service
    125      * @param packageName       The package name of the app
    126      * @param activityName      The requested activity name
    127      * @return true if the supplied activity is distraction optimized
    128      */
    129     static boolean isActivityDistractionOptimized(
    130             CarPackageManager carPackageManager, String packageName, String activityName) {
    131         boolean isDistractionOptimized = false;
    132         // try getting distraction optimization info
    133         try {
    134             if (carPackageManager != null) {
    135                 isDistractionOptimized =
    136                         carPackageManager.isActivityDistractionOptimized(packageName, activityName);
    137             }
    138         } catch (CarNotConnectedException e) {
    139             Log.e(TAG, "Car not connected when getting DO info", e);
    140         }
    141         return isDistractionOptimized;
    142     }
    143 }
    144