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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.settingslib.suggestions;
     18 
     19 
     20 import android.content.ComponentName;
     21 import android.content.Context;
     22 import android.os.Bundle;
     23 import android.service.settings.suggestions.Suggestion;
     24 import android.util.Log;
     25 
     26 import androidx.annotation.Nullable;
     27 import androidx.lifecycle.OnLifecycleEvent;
     28 import androidx.loader.app.LoaderManager;
     29 import androidx.loader.content.Loader;
     30 
     31 import com.android.settingslib.core.lifecycle.Lifecycle;
     32 
     33 import java.util.List;
     34 
     35 /**
     36  * Manages IPC communication to SettingsIntelligence for suggestion related services.
     37  */
     38 public class SuggestionControllerMixinCompat implements
     39         SuggestionController.ServiceConnectionListener, androidx.lifecycle.LifecycleObserver,
     40         LoaderManager.LoaderCallbacks<List<Suggestion>> {
     41 
     42     public interface SuggestionControllerHost {
     43         /**
     44          * Called when suggestion data fetching is ready.
     45          */
     46         void onSuggestionReady(List<Suggestion> data);
     47 
     48         /**
     49          * Returns {@link LoaderManager} associated with the host. If host is not attached to
     50          * activity then return null.
     51          */
     52         @Nullable
     53         LoaderManager getLoaderManager();
     54     }
     55 
     56     private static final String TAG = "SuggestionCtrlMixin";
     57     private static final boolean DEBUG = false;
     58 
     59     private final Context mContext;
     60     private final SuggestionController mSuggestionController;
     61     private final SuggestionControllerHost mHost;
     62 
     63     private boolean mSuggestionLoaded;
     64 
     65     public SuggestionControllerMixinCompat(Context context, SuggestionControllerHost host,
     66             Lifecycle lifecycle, ComponentName componentName) {
     67         mContext = context.getApplicationContext();
     68         mHost = host;
     69         mSuggestionController = new SuggestionController(mContext, componentName,
     70                     this /* serviceConnectionListener */);
     71         if (lifecycle != null) {
     72             lifecycle.addObserver(this);
     73         }
     74     }
     75 
     76     @OnLifecycleEvent(Lifecycle.Event.ON_START)
     77     public void onStart() {
     78         if (DEBUG) {
     79             Log.d(TAG, "SuggestionController started");
     80         }
     81         mSuggestionController.start();
     82     }
     83 
     84     @OnLifecycleEvent(Lifecycle.Event.ON_STOP)
     85     public void onStop() {
     86         if (DEBUG) {
     87             Log.d(TAG, "SuggestionController stopped.");
     88         }
     89         mSuggestionController.stop();
     90     }
     91 
     92     @Override
     93     public void onServiceConnected() {
     94         final LoaderManager loaderManager = mHost.getLoaderManager();
     95         if (loaderManager != null) {
     96             loaderManager.restartLoader(SuggestionLoader.LOADER_ID_SUGGESTIONS,
     97                     null /* args */, this /* callback */);
     98         }
     99     }
    100 
    101     @Override
    102     public void onServiceDisconnected() {
    103         if (DEBUG) {
    104             Log.d(TAG, "SuggestionService disconnected");
    105         }
    106         final LoaderManager loaderManager = mHost.getLoaderManager();
    107         if (loaderManager != null) {
    108             loaderManager.destroyLoader(SuggestionLoader.LOADER_ID_SUGGESTIONS);
    109         }
    110     }
    111 
    112     @Override
    113     public Loader<List<Suggestion>> onCreateLoader(int id, Bundle args) {
    114         if (id == SuggestionLoader.LOADER_ID_SUGGESTIONS) {
    115             mSuggestionLoaded = false;
    116             return new SuggestionLoaderCompat(mContext, mSuggestionController);
    117         }
    118         throw new IllegalArgumentException("This loader id is not supported " + id);
    119     }
    120 
    121     @Override
    122     public void onLoadFinished(Loader<List<Suggestion>> loader, List<Suggestion> data) {
    123         mSuggestionLoaded = true;
    124         mHost.onSuggestionReady(data);
    125     }
    126 
    127     @Override
    128     public void onLoaderReset(Loader<List<Suggestion>> loader) {
    129         mSuggestionLoaded = false;
    130     }
    131 
    132     public boolean isSuggestionLoaded() {
    133         return mSuggestionLoaded;
    134     }
    135 
    136     public void dismissSuggestion(Suggestion suggestion) {
    137         mSuggestionController.dismissSuggestions(suggestion);
    138     }
    139 
    140     public void launchSuggestion(Suggestion suggestion) {
    141         mSuggestionController.launchSuggestion(suggestion);
    142     }
    143 }
    144