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.settings.print; 18 19 import android.annotation.NonNull; 20 import android.content.Context; 21 import android.print.PrintManager; 22 import android.print.PrintServicesLoader; 23 import android.printservice.PrintServiceInfo; 24 25 import androidx.loader.content.Loader; 26 27 import com.android.internal.util.Preconditions; 28 29 import java.util.List; 30 31 /** 32 * Loader for the list of print services. Can be parametrized to select a subset. 33 */ 34 public class SettingsPrintServicesLoader extends Loader<List<PrintServiceInfo>> { 35 36 private PrintServicesLoader mLoader; 37 SettingsPrintServicesLoader(@onNull PrintManager printManager, @NonNull Context context, int selectionFlags)38 public SettingsPrintServicesLoader(@NonNull PrintManager printManager, @NonNull Context context, 39 int selectionFlags) { 40 super(Preconditions.checkNotNull(context)); 41 42 mLoader = new PrintServicesLoader(printManager, context, selectionFlags) { 43 @Override 44 public void deliverResult(List<PrintServiceInfo> data) { 45 super.deliverResult(data); 46 47 // deliver the result to outer Loader class 48 SettingsPrintServicesLoader.this.deliverResult(data); 49 } 50 }; 51 } 52 53 @Override onForceLoad()54 protected void onForceLoad() { 55 mLoader.forceLoad(); 56 } 57 58 @Override onStartLoading()59 protected void onStartLoading() { 60 mLoader.startLoading(); 61 } 62 63 @Override onStopLoading()64 protected void onStopLoading() { 65 mLoader.stopLoading(); 66 } 67 68 @Override onCancelLoad()69 protected boolean onCancelLoad() { 70 return mLoader.cancelLoad(); 71 } 72 73 @Override onAbandon()74 protected void onAbandon() { 75 mLoader.abandon(); 76 } 77 78 @Override onReset()79 protected void onReset() { 80 mLoader.reset(); 81 } 82 } 83