1 /* 2 * Copyright (C) 2015 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 android.printservice; 18 19 import android.annotation.NonNull; 20 import android.annotation.Nullable; 21 import android.graphics.drawable.Icon; 22 import android.os.RemoteException; 23 import android.print.PrinterId; 24 import android.util.Log; 25 26 27 /** 28 * Callback for {@link PrinterDiscoverySession#onRequestCustomPrinterIcon}. 29 */ 30 public final class CustomPrinterIconCallback { 31 /** The printer the call back is for */ 32 private final @NonNull PrinterId mPrinterId; 33 private final @NonNull IPrintServiceClient mObserver; 34 private static final String LOG_TAG = "CustomPrinterIconCB"; 35 36 /** 37 * Create a callback class to be used once a icon is loaded 38 * 39 * @param printerId The printer the icon should be loaded for 40 * @param observer The observer that needs to be notified about the update. 41 */ CustomPrinterIconCallback(@onNull PrinterId printerId, @NonNull IPrintServiceClient observer)42 CustomPrinterIconCallback(@NonNull PrinterId printerId, @NonNull IPrintServiceClient observer) { 43 mPrinterId = printerId; 44 mObserver = observer; 45 } 46 47 /** 48 * Provide a new icon for a printer. Can be called more than once to update the icon. 49 * 50 * @param icon The new icon for the printer or null to unset the current icon 51 * @return true iff the icon could be updated 52 */ onCustomPrinterIconLoaded(@ullable Icon icon)53 public boolean onCustomPrinterIconLoaded(@Nullable Icon icon) { 54 try { 55 mObserver.onCustomPrinterIconLoaded(mPrinterId, icon); 56 } catch (RemoteException e) { 57 Log.e(LOG_TAG , "Could not update icon", e); 58 return false; 59 } 60 61 return true; 62 } 63 } 64