Sunny Goyal
04e9f39f19
Bug: 183607616 Test: Verified on device Change-Id: Id7ded3c244b747a577cdfcf298db6dddf19fa4eb
96 lines
3.5 KiB
Java
96 lines
3.5 KiB
Java
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.launcher3.allapps.search;
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import static com.android.launcher3.util.Executors.MAIN_EXECUTOR;
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import android.content.Context;
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import android.os.Handler;
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import androidx.annotation.AnyThread;
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import com.android.launcher3.LauncherAppState;
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import com.android.launcher3.allapps.AllAppsGridAdapter.AdapterItem;
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import com.android.launcher3.model.AllAppsList;
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import com.android.launcher3.model.BaseModelUpdateTask;
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import com.android.launcher3.model.BgDataModel;
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import com.android.launcher3.model.data.AppInfo;
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import com.android.launcher3.search.SearchAlgorithm;
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import com.android.launcher3.search.SearchCallback;
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import com.android.launcher3.search.StringMatcherUtility;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* The default search implementation.
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*/
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public class DefaultAppSearchAlgorithm implements SearchAlgorithm<AdapterItem> {
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private static final int MAX_RESULTS_COUNT = 5;
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private final LauncherAppState mAppState;
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private final Handler mResultHandler;
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public DefaultAppSearchAlgorithm(Context context) {
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mAppState = LauncherAppState.getInstance(context);
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mResultHandler = new Handler(MAIN_EXECUTOR.getLooper());
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}
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@Override
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public void cancel(boolean interruptActiveRequests) {
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if (interruptActiveRequests) {
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mResultHandler.removeCallbacksAndMessages(null);
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}
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}
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@Override
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public void doSearch(String query, SearchCallback<AdapterItem> callback) {
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mAppState.getModel().enqueueModelUpdateTask(new BaseModelUpdateTask() {
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@Override
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public void execute(LauncherAppState app, BgDataModel dataModel, AllAppsList apps) {
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ArrayList<AdapterItem> result = getTitleMatchResult(apps.data, query);
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mResultHandler.post(() -> callback.onSearchResult(query, result));
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}
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});
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}
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/**
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* Filters {@link AppInfo}s matching specified query
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*/
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@AnyThread
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public static ArrayList<AdapterItem> getTitleMatchResult(List<AppInfo> apps, String query) {
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// Do an intersection of the words in the query and each title, and filter out all the
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// apps that don't match all of the words in the query.
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final String queryTextLower = query.toLowerCase();
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final ArrayList<AdapterItem> result = new ArrayList<>();
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StringMatcherUtility.StringMatcher matcher =
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StringMatcherUtility.StringMatcher.getInstance();
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int resultCount = 0;
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int total = apps.size();
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for (int i = 0; i < total && resultCount < MAX_RESULTS_COUNT; i++) {
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AppInfo info = apps.get(i);
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if (StringMatcherUtility.matches(queryTextLower, info.title.toString(), matcher)) {
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AdapterItem appItem = AdapterItem.asApp(resultCount, "", info, resultCount);
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result.add(appItem);
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resultCount++;
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}
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}
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return result;
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}
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}
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