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      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.settings.search;
     18 
     19 import static com.android.settings.search.InstalledAppResultLoader.getWordDifference;
     20 
     21 import android.accessibilityservice.AccessibilityServiceInfo;
     22 import android.content.ComponentName;
     23 import android.content.Context;
     24 import android.content.Intent;
     25 import android.content.pm.PackageManager;
     26 import android.content.pm.ResolveInfo;
     27 import android.content.pm.ServiceInfo;
     28 import android.graphics.drawable.Drawable;
     29 import android.support.annotation.VisibleForTesting;
     30 import android.support.v4.content.ContextCompat;
     31 import android.view.accessibility.AccessibilityManager;
     32 
     33 import com.android.settings.R;
     34 import com.android.settings.accessibility.AccessibilitySettings;
     35 import com.android.settings.dashboard.SiteMapManager;
     36 import com.android.settings.utils.AsyncLoader;
     37 
     38 import java.util.HashSet;
     39 import java.util.List;
     40 import java.util.Objects;
     41 import java.util.Set;
     42 
     43 public class AccessibilityServiceResultLoader extends AsyncLoader<Set<? extends SearchResult>> {
     44 
     45     private static final int NAME_NO_MATCH = -1;
     46 
     47     private List<String> mBreadcrumb;
     48     private SiteMapManager mSiteMapManager;
     49     @VisibleForTesting
     50     final String mQuery;
     51     private final AccessibilityManager mAccessibilityManager;
     52     private final PackageManager mPackageManager;
     53 
     54 
     55     public AccessibilityServiceResultLoader(Context context, String query,
     56             SiteMapManager mapManager) {
     57         super(context);
     58         mSiteMapManager = mapManager;
     59         mPackageManager = context.getPackageManager();
     60         mAccessibilityManager =
     61                 (AccessibilityManager) context.getSystemService(Context.ACCESSIBILITY_SERVICE);
     62         mQuery = query;
     63     }
     64 
     65     @Override
     66     public Set<? extends SearchResult> loadInBackground() {
     67         final Set<SearchResult> results = new HashSet<>();
     68         final Context context = getContext();
     69         final List<AccessibilityServiceInfo> services = mAccessibilityManager
     70                 .getInstalledAccessibilityServiceList();
     71         final String screenTitle = context.getString(R.string.accessibility_settings);
     72         for (AccessibilityServiceInfo service : services) {
     73             if (service == null) {
     74                 continue;
     75             }
     76             final ResolveInfo resolveInfo = service.getResolveInfo();
     77             if (service.getResolveInfo() == null) {
     78                 continue;
     79             }
     80             final ServiceInfo serviceInfo = resolveInfo.serviceInfo;
     81             final CharSequence title = resolveInfo.loadLabel(mPackageManager);
     82             final int wordDiff = getWordDifference(title.toString(), mQuery);
     83             if (wordDiff == NAME_NO_MATCH) {
     84                 continue;
     85             }
     86             final Drawable icon;
     87             if (resolveInfo.getIconResource() == 0) {
     88                 icon = ContextCompat.getDrawable(context, R.mipmap.ic_accessibility_generic);
     89             } else {
     90                 icon = resolveInfo.loadIcon(mPackageManager);
     91             }
     92             final String componentName = new ComponentName(serviceInfo.packageName,
     93                     serviceInfo.name).flattenToString();
     94             final Intent intent = DatabaseIndexingUtils.buildSubsettingIntent(context,
     95                     AccessibilitySettings.class.getName(), componentName, screenTitle);
     96 
     97             results.add(new SearchResult.Builder()
     98                     .setTitle(title)
     99                     .addBreadcrumbs(getBreadCrumb())
    100                     .setPayload(new ResultPayload(intent))
    101                     .setRank(wordDiff)
    102                     .setIcon(icon)
    103                     .setStableId(Objects.hash(screenTitle, componentName))
    104                     .build());
    105         }
    106         return results;
    107     }
    108 
    109     private List<String> getBreadCrumb() {
    110         if (mBreadcrumb == null || mBreadcrumb.isEmpty()) {
    111             final Context context = getContext();
    112             mBreadcrumb = mSiteMapManager.buildBreadCrumb(
    113                     context, AccessibilitySettings.class.getName(),
    114                     context.getString(R.string.accessibility_settings));
    115         }
    116         return mBreadcrumb;
    117     }
    118 
    119     @Override
    120     protected void onDiscardResult(Set<? extends SearchResult> result) {
    121 
    122     }
    123 }
    124