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 package com.android.launcher3.model;
17 
18 import android.content.Context;
19 import android.util.Log;
20 
21 import com.android.launcher3.LauncherAppState;
22 import com.android.launcher3.LauncherModel;
23 import com.android.launcher3.LauncherModel.ModelUpdateTask;
24 
25 import java.util.concurrent.Executor;
26 
27 import androidx.annotation.WorkerThread;
28 
29 /**
30  * Utility class to preload LauncherModel
31  */
32 public class ModelPreload implements ModelUpdateTask {
33 
34     private static final String TAG = "ModelPreload";
35 
36     private LauncherAppState mApp;
37     private LauncherModel mModel;
38     private BgDataModel mBgDataModel;
39     private AllAppsList mAllAppsList;
40 
41     @Override
init(LauncherAppState app, LauncherModel model, BgDataModel dataModel, AllAppsList allAppsList, Executor uiExecutor)42     public final void init(LauncherAppState app, LauncherModel model, BgDataModel dataModel,
43             AllAppsList allAppsList, Executor uiExecutor) {
44         mApp = app;
45         mModel = model;
46         mBgDataModel = dataModel;
47         mAllAppsList = allAppsList;
48     }
49 
50     @Override
run()51     public final void run() {
52         mModel.startLoaderForResultsIfNotLoaded(
53                 new LoaderResults(mApp, mBgDataModel, mAllAppsList, 0, null));
54         Log.d(TAG, "Preload completed : " + mModel.isModelLoaded());
55         onComplete(mModel.isModelLoaded());
56     }
57 
58     /**
59      * Called when the task is complete
60      */
61     @WorkerThread
onComplete(boolean isSuccess)62     public void onComplete(boolean isSuccess) { }
63 
start(Context context)64     public void start(Context context) {
65         LauncherAppState.getInstance(context).getModel().enqueueModelUpdateTask(this);
66     }
67 }