1 /* 2 * Copyright (C) 2017 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 import android.content.Intent; 20 import android.util.ArrayMap; 21 import android.util.ArraySet; 22 23 import com.android.settingslib.drawer.Tile; 24 25 import java.util.ArrayList; 26 import java.util.List; 27 import java.util.Map; 28 import java.util.Set; 29 30 public class SuggestionList { 31 // Category -> list of suggestion map 32 private final Map<SuggestionCategory, List<Tile>> mSuggestions; 33 34 // A flatten list of all suggestions. 35 private List<Tile> mSuggestionList; 36 37 public SuggestionList() { 38 mSuggestions = new ArrayMap<>(); 39 } 40 41 public void addSuggestions(SuggestionCategory category, List<Tile> suggestions) { 42 mSuggestions.put(category, suggestions); 43 } 44 45 public List<Tile> getSuggestions() { 46 if (mSuggestionList != null) { 47 return mSuggestionList; 48 } 49 mSuggestionList = new ArrayList<>(); 50 for (List<Tile> suggestions : mSuggestions.values()) { 51 mSuggestionList.addAll(suggestions); 52 } 53 dedupeSuggestions(mSuggestionList); 54 return mSuggestionList; 55 } 56 57 public boolean isExclusiveSuggestionCategory() { 58 if (mSuggestions.size() != 1) { 59 // If there is no category, or more than 1 category, it's not exclusive by definition. 60 return false; 61 } 62 for (SuggestionCategory category : mSuggestions.keySet()) { 63 if (category.exclusive) { 64 return true; 65 } 66 } 67 return false; 68 } 69 70 /** 71 * Filter suggestions list so they are all unique. 72 */ 73 private void dedupeSuggestions(List<Tile> suggestions) { 74 final Set<String> intents = new ArraySet<>(); 75 for (int i = suggestions.size() - 1; i >= 0; i--) { 76 final Tile suggestion = suggestions.get(i); 77 final String intentUri = suggestion.intent.toUri(Intent.URI_INTENT_SCHEME); 78 if (intents.contains(intentUri)) { 79 suggestions.remove(i); 80 } else { 81 intents.add(intentUri); 82 } 83 } 84 } 85 } 86