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.icons.cache; 17 18 import android.content.ComponentName; 19 import android.content.Context; 20 import android.content.pm.PackageInfo; 21 import android.os.LocaleList; 22 import android.os.UserHandle; 23 24 import androidx.annotation.NonNull; 25 import androidx.annotation.Nullable; 26 27 import com.android.launcher3.icons.BitmapInfo; 28 29 public interface CachingLogic<T> { 30 31 @NonNull getComponent(@onNull final T object)32 ComponentName getComponent(@NonNull final T object); 33 34 @NonNull getUser(@onNull final T object)35 UserHandle getUser(@NonNull final T object); 36 37 @NonNull getLabel(@onNull final T object)38 CharSequence getLabel(@NonNull final T object); 39 40 @NonNull getDescription(@onNull final T object, @NonNull final CharSequence fallback)41 default CharSequence getDescription(@NonNull final T object, 42 @NonNull final CharSequence fallback) { 43 return fallback; 44 } 45 46 @NonNull loadIcon(@onNull final Context context, @NonNull final T object)47 BitmapInfo loadIcon(@NonNull final Context context, @NonNull final T object); 48 49 /** 50 * Provides a option list of keywords to associate with this object 51 */ 52 @Nullable getKeywords(@onNull final T object, @NonNull final LocaleList localeList)53 default String getKeywords(@NonNull final T object, @NonNull final LocaleList localeList) { 54 return null; 55 } 56 57 /** 58 * Returns the timestamp the entry was last updated in cache. 59 */ getLastUpdatedTime(@ullable final T object, @NonNull final PackageInfo info)60 default long getLastUpdatedTime(@Nullable final T object, @NonNull final PackageInfo info) { 61 return info.lastUpdateTime; 62 } 63 64 /** 65 * Returns true the object should be added to mem cache; otherwise returns false. 66 */ addToMemCache()67 default boolean addToMemCache() { 68 return true; 69 } 70 } 71