DefaultBrowserPreferenceController.java revision efa763624a86f77c99b5cac53d8cf81e474ffc4b 
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.applications.defaultapps;
18
19import android.content.Context;
20import android.content.Intent;
21import android.content.pm.ComponentInfo;
22import android.content.pm.PackageManager;
23import android.content.pm.ResolveInfo;
24import android.graphics.drawable.Drawable;
25import android.net.Uri;
26import android.support.v7.preference.Preference;
27import android.text.TextUtils;
28import android.util.Log;
29
30import java.util.List;
31
32public class DefaultBrowserPreferenceController extends DefaultAppPreferenceController {
33
34    private static final String TAG = "BrowserPrefCtrl";
35
36    static final Intent BROWSE_PROBE = new Intent()
37            .setAction(Intent.ACTION_VIEW)
38            .addCategory(Intent.CATEGORY_BROWSABLE)
39            .setData(Uri.parse("http:"));
40
41    public DefaultBrowserPreferenceController(Context context) {
42        super(context);
43    }
44
45    @Override
46    public boolean isAvailable() {
47        final List<ResolveInfo> candidates = getCandidates();
48        return candidates != null && !candidates.isEmpty();
49    }
50
51    @Override
52    public String getPreferenceKey() {
53        return "default_browser";
54    }
55
56    @Override
57    public void updateState(Preference preference) {
58        super.updateState(preference);
59        final CharSequence defaultAppLabel = getDefaultAppLabel();
60        if (!TextUtils.isEmpty(defaultAppLabel)) {
61            preference.setSummary(defaultAppLabel);
62        }
63    }
64
65    @Override
66    protected DefaultAppInfo getDefaultAppInfo() {
67        try {
68            final String packageName = mPackageManager.getDefaultBrowserPackageNameAsUser(mUserId);
69            Log.d(TAG, "Get default browser package: " + packageName);
70            return new DefaultAppInfo(mContext, mPackageManager,
71                    mPackageManager.getPackageManager().getApplicationInfo(packageName, 0));
72        } catch (PackageManager.NameNotFoundException e) {
73            return null;
74        }
75    }
76
77    @Override
78    public CharSequence getDefaultAppLabel() {
79        if (!isAvailable()) {
80            return null;
81        }
82        final DefaultAppInfo defaultApp = getDefaultAppInfo();
83        final CharSequence defaultAppLabel = defaultApp != null ? defaultApp.loadLabel() : null;
84        if (!TextUtils.isEmpty(defaultAppLabel)) {
85            return defaultAppLabel;
86        }
87        return getOnlyAppLabel();
88    }
89
90    @Override
91    public Drawable getDefaultAppIcon() {
92        if (!isAvailable()) {
93            return null;
94        }
95        final DefaultAppInfo defaultApp = getDefaultAppInfo();
96        if (defaultApp != null) {
97            return defaultApp.loadIcon();
98        }
99        return getOnlyAppIcon();
100    }
101
102    private List<ResolveInfo> getCandidates() {
103        return mPackageManager.queryIntentActivitiesAsUser(BROWSE_PROBE, PackageManager.MATCH_ALL,
104                mUserId);
105    }
106
107    private String getOnlyAppLabel() {
108        // Resolve that intent and check that the handleAllWebDataURI boolean is set
109        final List<ResolveInfo> list = getCandidates();
110        if (list != null && list.size() == 1) {
111            final ResolveInfo info = list.get(0);
112            final String label = info.loadLabel(mPackageManager.getPackageManager()).toString();
113            final ComponentInfo cn = info.getComponentInfo();
114            final String packageName = cn == null ? null : cn.packageName;
115            Log.d(TAG, "Getting label for the only browser app: " + packageName + label);
116            return label;
117        }
118        return null;
119    }
120
121    private Drawable getOnlyAppIcon() {
122        final List<ResolveInfo> list = getCandidates();
123        if (list != null && list.size() == 1) {
124            final ResolveInfo info = list.get(0);
125            final ComponentInfo cn = info.getComponentInfo();
126            final String packageName = cn == null ? null : cn.packageName;
127            Log.d(TAG, "Getting icon for the only browser app: " + packageName);
128            return info.loadIcon(mPackageManager.getPackageManager());
129        }
130        return null;
131    }
132
133    /**
134     * Whether or not the pkg contains browser capability
135     */
136    public static boolean hasBrowserPreference(String pkg, Context context) {
137        final Intent intent = new Intent(BROWSE_PROBE);
138        intent.setPackage(pkg);
139        final List<ResolveInfo> resolveInfos =
140                context.getPackageManager().queryIntentActivities(intent, 0);
141        return resolveInfos != null && resolveInfos.size() != 0;
142    }
143
144    /**
145     * Whether or not the pkg is the default browser
146     */
147    public boolean isBrowserDefault(String pkg, int userId) {
148        String defaultPackage = mPackageManager.getDefaultBrowserPackageNameAsUser(userId);
149        if (defaultPackage != null) {
150            return defaultPackage.equals(pkg);
151        }
152
153        final List<ResolveInfo> list = mPackageManager.queryIntentActivitiesAsUser(BROWSE_PROBE,
154                PackageManager.MATCH_ALL, userId);
155        // There is only 1 app, it must be the default browser.
156        return list != null && list.size() == 1;
157    }
158}
159