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      1 /*
      2  * Copyright (C) 2016 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.settings.overlay;
     18 
     19 import android.content.Context;
     20 import android.text.TextUtils;
     21 import android.util.Log;
     22 
     23 import com.android.settings.R;
     24 import com.android.settings.accounts.AccountFeatureProvider;
     25 import com.android.settings.applications.ApplicationFeatureProvider;
     26 import com.android.settings.bluetooth.BluetoothFeatureProvider;
     27 import com.android.settings.dashboard.DashboardFeatureProvider;
     28 import com.android.settings.dashboard.suggestions.SuggestionFeatureProvider;
     29 import com.android.settings.enterprise.EnterprisePrivacyFeatureProvider;
     30 import com.android.settings.fuelgauge.PowerUsageFeatureProvider;
     31 import com.android.settings.gestures.AssistGestureFeatureProvider;
     32 import com.android.settings.localepicker.LocaleFeatureProvider;
     33 import com.android.settings.search.DeviceIndexFeatureProvider;
     34 import com.android.settings.search.SearchFeatureProvider;
     35 import com.android.settings.security.SecurityFeatureProvider;
     36 import com.android.settings.slices.SlicesFeatureProvider;
     37 import com.android.settings.users.UserFeatureProvider;
     38 import com.android.settingslib.core.instrumentation.MetricsFeatureProvider;
     39 
     40 /**
     41  * Abstract class for creating feature controllers. Allows OEM implementations to define their own
     42  * factories with their own controllers containing whatever code is needed to implement
     43  * the features. To provide a factory implementation, implementors should override
     44  * {@link R.string#config_featureFactory} in their override.
     45  */
     46 public abstract class FeatureFactory {
     47     private static final String LOG_TAG = "FeatureFactory";
     48     private static final boolean DEBUG = false;
     49 
     50     protected static FeatureFactory sFactory;
     51 
     52     /**
     53      * Returns a factory for creating feature controllers. Creates the factory if it does not
     54      * already exist. Uses the value of {@link R.string#config_featureFactory} to instantiate
     55      * a factory implementation.
     56      */
     57     public static FeatureFactory getFactory(Context context) {
     58         if (sFactory != null) {
     59             return sFactory;
     60         }
     61 
     62         if (DEBUG) Log.d(LOG_TAG, "getFactory");
     63         final String clsName = context.getString(R.string.config_featureFactory);
     64         if (TextUtils.isEmpty(clsName)) {
     65             throw new UnsupportedOperationException("No feature factory configured");
     66         }
     67         try {
     68             sFactory = (FeatureFactory) context.getClassLoader().loadClass(clsName).newInstance();
     69         } catch (InstantiationException | IllegalAccessException | ClassNotFoundException e) {
     70             throw new FactoryNotFoundException(e);
     71         }
     72 
     73         if (DEBUG) Log.d(LOG_TAG, "started " + sFactory.getClass().getSimpleName());
     74         return sFactory;
     75     }
     76 
     77     public abstract AssistGestureFeatureProvider getAssistGestureFeatureProvider();
     78 
     79     public abstract SuggestionFeatureProvider getSuggestionFeatureProvider(Context context);
     80 
     81     public abstract SupportFeatureProvider getSupportFeatureProvider(Context context);
     82 
     83     public abstract MetricsFeatureProvider getMetricsFeatureProvider();
     84 
     85     public abstract PowerUsageFeatureProvider getPowerUsageFeatureProvider(Context context);
     86 
     87     public abstract DashboardFeatureProvider getDashboardFeatureProvider(Context context);
     88 
     89     public abstract DockUpdaterFeatureProvider getDockUpdaterFeatureProvider();
     90 
     91     public abstract ApplicationFeatureProvider getApplicationFeatureProvider(Context context);
     92 
     93     public abstract LocaleFeatureProvider getLocaleFeatureProvider();
     94 
     95     public abstract EnterprisePrivacyFeatureProvider getEnterprisePrivacyFeatureProvider(
     96             Context context);
     97 
     98     public abstract SearchFeatureProvider getSearchFeatureProvider();
     99 
    100     public abstract SurveyFeatureProvider getSurveyFeatureProvider(Context context);
    101 
    102     public abstract SecurityFeatureProvider getSecurityFeatureProvider();
    103 
    104     public abstract UserFeatureProvider getUserFeatureProvider(Context context);
    105 
    106     public abstract BluetoothFeatureProvider getBluetoothFeatureProvider(Context context);
    107 
    108     public abstract SlicesFeatureProvider getSlicesFeatureProvider();
    109 
    110     public abstract AccountFeatureProvider getAccountFeatureProvider();
    111 
    112     public abstract DeviceIndexFeatureProvider getDeviceIndexFeatureProvider();
    113 
    114     public static final class FactoryNotFoundException extends RuntimeException {
    115         public FactoryNotFoundException(Throwable throwable) {
    116             super("Unable to create factory. Did you misconfigure Proguard?", throwable);
    117         }
    118     }
    119 }
    120