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.graphics.drawable.Drawable;
22import android.os.UserHandle;
23import android.os.UserManager;
24import android.support.v7.preference.Preference;
25import android.text.TextUtils;
26import android.util.Log;
27
28import com.android.settings.R;
29import com.android.settings.applications.PackageManagerWrapper;
30import com.android.settings.applications.PackageManagerWrapperImpl;
31import com.android.settings.core.PreferenceControllerMixin;
32import com.android.settings.widget.GearPreference;
33import com.android.settingslib.core.AbstractPreferenceController;
34
35public abstract class DefaultAppPreferenceController extends AbstractPreferenceController
36        implements PreferenceControllerMixin {
37
38    private static final String TAG = "DefaultAppPrefControl";
39
40    protected final PackageManagerWrapper mPackageManager;
41    protected final UserManager mUserManager;
42
43    protected int mUserId;
44
45    public DefaultAppPreferenceController(Context context) {
46        super(context);
47        mPackageManager = new PackageManagerWrapperImpl(context.getPackageManager());
48        mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
49        mUserId = UserHandle.myUserId();
50    }
51
52    @Override
53    public void updateState(Preference preference) {
54        final DefaultAppInfo app = getDefaultAppInfo();
55        CharSequence defaultAppLabel = getDefaultAppLabel();
56        if (!TextUtils.isEmpty(defaultAppLabel)) {
57            preference.setSummary(defaultAppLabel);
58            preference.setIcon(getDefaultAppIcon());
59        } else {
60            Log.d(TAG, "No default app");
61            preference.setSummary(R.string.app_list_preference_none);
62            preference.setIcon(null);
63        }
64        mayUpdateGearIcon(app, preference);
65    }
66
67    private void mayUpdateGearIcon(DefaultAppInfo app, Preference preference) {
68        if (!(preference instanceof GearPreference)) {
69            return;
70        }
71        final Intent settingIntent = getSettingIntent(app);
72        if (settingIntent != null) {
73            ((GearPreference) preference).setOnGearClickListener(
74                    p -> mContext.startActivity(settingIntent));
75        } else {
76            ((GearPreference) preference).setOnGearClickListener(null);
77        }
78    }
79
80    protected abstract DefaultAppInfo getDefaultAppInfo();
81
82    /**
83     * Returns an optional intent that will be launched when clicking "gear" icon.
84     */
85    protected Intent getSettingIntent(DefaultAppInfo info) {
86        //By default return null. It's up to subclasses to provide logic.
87        return null;
88    }
89
90    public Drawable getDefaultAppIcon() {
91        if (!isAvailable()) {
92            return null;
93        }
94        final DefaultAppInfo app = getDefaultAppInfo();
95        if (app != null) {
96            return app.loadIcon();
97        }
98        return null;
99    }
100
101    public CharSequence getDefaultAppLabel() {
102        if (!isAvailable()) {
103            return null;
104        }
105        final DefaultAppInfo app = getDefaultAppInfo();
106        if (app != null) {
107            return app.loadLabel();
108        }
109        return null;
110    }
111}
112