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
17package com.android.settings.search;
18
19import static com.android.settings.search.InstalledAppResultLoader.getWordDifference;
20
21import android.accessibilityservice.AccessibilityServiceInfo;
22import android.content.ComponentName;
23import android.content.Context;
24import android.content.Intent;
25import android.content.pm.PackageManager;
26import android.content.pm.ResolveInfo;
27import android.content.pm.ServiceInfo;
28import android.graphics.drawable.Drawable;
29import android.support.annotation.VisibleForTesting;
30import android.support.v4.content.ContextCompat;
31import android.view.accessibility.AccessibilityManager;
32
33import com.android.settings.R;
34import com.android.settings.accessibility.AccessibilitySettings;
35import com.android.settings.dashboard.SiteMapManager;
36import com.android.settings.utils.AsyncLoader;
37
38import java.util.HashSet;
39import java.util.List;
40import java.util.Objects;
41import java.util.Set;
42
43public 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