1/*
2 * Copyright (C) 2010 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;
18
19import org.xmlpull.v1.XmlPullParserException;
20
21import android.app.Activity;
22import android.app.AlertDialog;
23import android.app.Dialog;
24import android.app.ListActivity;
25import android.app.admin.DeviceAdminInfo;
26import android.app.admin.DeviceAdminReceiver;
27import android.app.admin.DevicePolicyManager;
28import android.content.ComponentName;
29import android.content.Context;
30import android.content.DialogInterface;
31import android.content.Intent;
32import android.content.pm.PackageManager;
33import android.content.pm.ResolveInfo;
34import android.content.res.Resources;
35import android.os.Bundle;
36import android.os.Handler;
37import android.os.RemoteCallback;
38import android.util.Log;
39import android.view.LayoutInflater;
40import android.view.View;
41import android.view.ViewGroup;
42import android.widget.BaseAdapter;
43import android.widget.CheckBox;
44import android.widget.ImageView;
45import android.widget.ListView;
46import android.widget.TextView;
47
48import java.io.IOException;
49import java.util.ArrayList;
50import java.util.HashSet;
51import java.util.List;
52
53public class DeviceAdminSettings extends ListActivity {
54    static final String TAG = "DeviceAdminSettings";
55
56    static final int DIALOG_WARNING = 1;
57
58    DevicePolicyManager mDPM;
59    final HashSet<ComponentName> mActiveAdmins = new HashSet<ComponentName>();
60    final ArrayList<DeviceAdminInfo> mAvailableAdmins = new ArrayList<DeviceAdminInfo>();
61
62    @Override
63    protected void onCreate(Bundle icicle) {
64        super.onCreate(icicle);
65
66        mDPM = (DevicePolicyManager)getSystemService(Context.DEVICE_POLICY_SERVICE);
67
68        setContentView(R.layout.device_admin_settings);
69    }
70
71    @Override
72    protected void onResume() {
73        super.onResume();
74        updateList();
75    }
76
77    void updateList() {
78        mActiveAdmins.clear();
79        List<ComponentName> cur = mDPM.getActiveAdmins();
80        if (cur != null) {
81            for (int i=0; i<cur.size(); i++) {
82                mActiveAdmins.add(cur.get(i));
83            }
84        }
85
86        mAvailableAdmins.clear();
87        List<ResolveInfo> avail = getPackageManager().queryBroadcastReceivers(
88                new Intent(DeviceAdminReceiver.ACTION_DEVICE_ADMIN_ENABLED),
89                PackageManager.GET_META_DATA);
90        int count = avail == null ? 0 : avail.size();
91        for (int i=0; i<count; i++) {
92            ResolveInfo ri = avail.get(i);
93            try {
94                DeviceAdminInfo dpi = new DeviceAdminInfo(this, ri);
95                if (dpi.isVisible() || mActiveAdmins.contains(dpi.getComponent())) {
96                    mAvailableAdmins.add(dpi);
97                }
98            } catch (XmlPullParserException e) {
99                Log.w(TAG, "Skipping " + ri.activityInfo, e);
100            } catch (IOException e) {
101                Log.w(TAG, "Skipping " + ri.activityInfo, e);
102            }
103        }
104
105        getListView().setAdapter(new PolicyListAdapter());
106    }
107
108    @Override
109    protected void onListItemClick(ListView l, View v, int position, long id) {
110        DeviceAdminInfo dpi = (DeviceAdminInfo)l.getAdapter().getItem(position);
111        Intent intent = new Intent();
112        intent.setClass(this, DeviceAdminAdd.class);
113        intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN, dpi.getComponent());
114        startActivity(intent);
115    }
116
117    static class ViewHolder {
118        ImageView icon;
119        TextView name;
120        CheckBox checkbox;
121        TextView description;
122    }
123
124    class PolicyListAdapter extends BaseAdapter {
125        final LayoutInflater mInflater;
126
127        PolicyListAdapter() {
128            mInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
129        }
130
131        public boolean hasStableIds() {
132            return true;
133        }
134
135        public int getCount() {
136            return mAvailableAdmins.size();
137        }
138
139        public Object getItem(int position) {
140            return mAvailableAdmins.get(position);
141        }
142
143        public long getItemId(int position) {
144            return position;
145        }
146
147        public boolean areAllItemsEnabled() {
148            return false;
149        }
150
151        public boolean isEnabled(int position) {
152            return true;
153        }
154
155        public View getView(int position, View convertView, ViewGroup parent) {
156            View v;
157            if (convertView == null) {
158                v = newView(parent);
159            } else {
160                v = convertView;
161            }
162            bindView(v, position);
163            return v;
164        }
165
166        public View newView(ViewGroup parent) {
167            View v = mInflater.inflate(R.layout.device_admin_item, parent, false);
168            ViewHolder h = new ViewHolder();
169            h.icon = (ImageView)v.findViewById(R.id.icon);
170            h.name = (TextView)v.findViewById(R.id.name);
171            h.checkbox = (CheckBox)v.findViewById(R.id.checkbox);
172            h.description = (TextView)v.findViewById(R.id.description);
173            v.setTag(h);
174            return v;
175        }
176
177        public void bindView(View view, int position) {
178            ViewHolder vh = (ViewHolder) view.getTag();
179            DeviceAdminInfo item = mAvailableAdmins.get(position);
180            vh.icon.setImageDrawable(item.loadIcon(getPackageManager()));
181            vh.name.setText(item.loadLabel(getPackageManager()));
182            vh.checkbox.setChecked(mActiveAdmins.contains(item.getComponent()));
183            try {
184                vh.description.setText(item.loadDescription(getPackageManager()));
185            } catch (Resources.NotFoundException e) {
186            }
187        }
188    }
189}
190