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.admin.DeviceAdminInfo;
25import android.app.admin.DeviceAdminReceiver;
26import android.app.admin.DevicePolicyManager;
27import android.content.ComponentName;
28import android.content.Context;
29import android.content.DialogInterface;
30import android.content.Intent;
31import android.content.pm.ActivityInfo;
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.text.TextUtils.TruncateAt;
39import android.util.Log;
40import android.view.Display;
41import android.view.View;
42import android.view.ViewGroup;
43import android.view.WindowManager;
44import android.widget.AppSecurityPermissions;
45import android.widget.Button;
46import android.widget.ImageView;
47import android.widget.TextView;
48
49import java.io.IOException;
50import java.util.ArrayList;
51
52public class DeviceAdminAdd extends Activity {
53    static final String TAG = "DeviceAdminAdd";
54
55    static final int DIALOG_WARNING = 1;
56
57    private static final int MAX_ADD_MSG_LINES_PORTRAIT = 5;
58    private static final int MAX_ADD_MSG_LINES_LANDSCAPE = 2;
59    private static final int MAX_ADD_MSG_LINES = 15;
60
61    Handler mHandler;
62
63    DevicePolicyManager mDPM;
64    DeviceAdminInfo mDeviceAdmin;
65    CharSequence mAddMsgText;
66
67    TextView mTitle;
68    ImageView mAdminIcon;
69    TextView mAdminName;
70    TextView mAdminDescription;
71    TextView mAddMsg;
72    boolean mAddMsgEllipsized = true;
73    TextView mAdminWarning;
74    ViewGroup mAdminPolicies;
75    Button mActionButton;
76    Button mCancelButton;
77
78    View mSelectLayout;
79
80    final ArrayList<View> mAddingPolicies = new ArrayList<View>();
81    final ArrayList<View> mActivePolicies = new ArrayList<View>();
82
83    boolean mAdding;
84
85    @Override
86    protected void onCreate(Bundle icicle) {
87        super.onCreate(icicle);
88
89        mHandler = new Handler(getMainLooper());
90
91        mDPM = (DevicePolicyManager)getSystemService(Context.DEVICE_POLICY_SERVICE);
92
93        if ((getIntent().getFlags()&Intent.FLAG_ACTIVITY_NEW_TASK) != 0) {
94            Log.w(TAG, "Can now start ADD_DEVICE_ADMIN as a new task");
95            finish();
96            return;
97        }
98
99        ComponentName cn = (ComponentName)getIntent().getParcelableExtra(
100                DevicePolicyManager.EXTRA_DEVICE_ADMIN);
101        if (cn == null) {
102            Log.w(TAG, "No component specified in " + getIntent().getAction());
103            finish();
104            return;
105        }
106        if (DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN.equals(getIntent().getAction())) {
107            // If this was an add request, then just exit immediately if the
108            // given component is already added.
109            if (mDPM.isAdminActive(cn)) {
110                setResult(Activity.RESULT_OK);
111                finish();
112                return;
113            }
114        }
115
116        ActivityInfo ai;
117        try {
118            ai = getPackageManager().getReceiverInfo(cn,
119                    PackageManager.GET_META_DATA);
120        } catch (PackageManager.NameNotFoundException e) {
121            Log.w(TAG, "Unable to retrieve device policy " + cn, e);
122            finish();
123            return;
124        }
125
126        ResolveInfo ri = new ResolveInfo();
127        ri.activityInfo = ai;
128        try {
129            mDeviceAdmin= new DeviceAdminInfo(this, ri);
130        } catch (XmlPullParserException e) {
131            Log.w(TAG, "Unable to retrieve device policy " + cn, e);
132            finish();
133            return;
134        } catch (IOException e) {
135            Log.w(TAG, "Unable to retrieve device policy " + cn, e);
136            finish();
137            return;
138        }
139
140        mAddMsgText = getIntent().getCharSequenceExtra(
141                DevicePolicyManager.EXTRA_ADD_EXPLANATION);
142
143        setContentView(R.layout.device_admin_add);
144
145        mTitle = (TextView)findViewById(R.id.title);
146        mAdminIcon = (ImageView)findViewById(R.id.admin_icon);
147        mAdminName = (TextView)findViewById(R.id.admin_name);
148        mAdminDescription = (TextView)findViewById(R.id.admin_description);
149
150        mAddMsg = (TextView)findViewById(R.id.add_msg);
151        mAddMsg.setOnClickListener(new View.OnClickListener() {
152            public void onClick(View v) {
153                toggleMessageEllipsis(v);
154            }
155        });
156
157        // toggleMessageEllipsis also handles initial layout:
158        toggleMessageEllipsis(mAddMsg);
159
160        mAdminWarning = (TextView)findViewById(R.id.admin_warning);
161        mAdminPolicies = (ViewGroup)findViewById(R.id.admin_policies);
162        mCancelButton = (Button)findViewById(R.id.cancel_button);
163        mCancelButton.setOnClickListener(new View.OnClickListener() {
164            public void onClick(View v) {
165                finish();
166            }
167        });
168        mActionButton = (Button)findViewById(R.id.action_button);
169        mActionButton.setOnClickListener(new View.OnClickListener() {
170            public void onClick(View v) {
171                if (mAdding) {
172                    try {
173                        mDPM.setActiveAdmin(mDeviceAdmin.getComponent());
174                        setResult(Activity.RESULT_OK);
175                    } catch (RuntimeException e) {
176                        // Something bad happened...  could be that it was
177                        // already set, though.
178                        Log.w(TAG, "Exception trying to activate admin "
179                                + mDeviceAdmin.getComponent(), e);
180                        if (mDPM.isAdminActive(mDeviceAdmin.getComponent())) {
181                            setResult(Activity.RESULT_OK);
182                        }
183                    }
184                    finish();
185                } else {
186                    mDPM.getRemoveWarning(mDeviceAdmin.getComponent(),
187                            new RemoteCallback(mHandler) {
188                        @Override
189                        protected void onResult(Bundle bundle) {
190                            CharSequence msg = bundle != null
191                                    ? bundle.getCharSequence(
192                                            DeviceAdminReceiver.EXTRA_DISABLE_WARNING)
193                                    : null;
194                            if (msg == null) {
195                                mDPM.removeActiveAdmin(mDeviceAdmin.getComponent());
196                                finish();
197                            } else {
198                                Bundle args = new Bundle();
199                                args.putCharSequence(
200                                        DeviceAdminReceiver.EXTRA_DISABLE_WARNING, msg);
201                                showDialog(DIALOG_WARNING, args);
202                            }
203                        }
204                    });
205                }
206            }
207        });
208    }
209
210    @Override
211    protected void onResume() {
212        super.onResume();
213        updateInterface();
214    }
215
216    @Override
217    protected Dialog onCreateDialog(int id, Bundle args) {
218        switch (id) {
219            case DIALOG_WARNING: {
220                CharSequence msg = args.getCharSequence(DeviceAdminReceiver.EXTRA_DISABLE_WARNING);
221                AlertDialog.Builder builder = new AlertDialog.Builder(
222                        DeviceAdminAdd.this);
223                builder.setMessage(msg);
224                builder.setPositiveButton(R.string.dlg_ok,
225                        new DialogInterface.OnClickListener() {
226                    public void onClick(DialogInterface dialog, int which) {
227                        mDPM.removeActiveAdmin(mDeviceAdmin.getComponent());
228                        finish();
229                    }
230                });
231                builder.setNegativeButton(R.string.dlg_cancel, null);
232                return builder.create();
233            }
234            default:
235                return super.onCreateDialog(id, args);
236
237        }
238    }
239
240    static void setViewVisibility(ArrayList<View> views, int visibility) {
241        final int N = views.size();
242        for (int i=0; i<N; i++) {
243            views.get(i).setVisibility(visibility);
244        }
245    }
246
247    void updateInterface() {
248        mAdminIcon.setImageDrawable(mDeviceAdmin.loadIcon(getPackageManager()));
249        mAdminName.setText(mDeviceAdmin.loadLabel(getPackageManager()));
250        try {
251            mAdminDescription.setText(
252                    mDeviceAdmin.loadDescription(getPackageManager()));
253            mAdminDescription.setVisibility(View.VISIBLE);
254        } catch (Resources.NotFoundException e) {
255            mAdminDescription.setVisibility(View.GONE);
256        }
257        if (mAddMsgText != null) {
258            mAddMsg.setText(mAddMsgText);
259            mAddMsg.setVisibility(View.VISIBLE);
260        } else {
261            mAddMsg.setVisibility(View.GONE);
262        }
263        if (mDPM.isAdminActive(mDeviceAdmin.getComponent())) {
264            if (mActivePolicies.size() == 0) {
265                ArrayList<DeviceAdminInfo.PolicyInfo> policies = mDeviceAdmin.getUsedPolicies();
266                for (int i=0; i<policies.size(); i++) {
267                    DeviceAdminInfo.PolicyInfo pi = policies.get(i);
268                    View view = AppSecurityPermissions.getPermissionItemView(
269                            this, getText(pi.label), "", true);
270                    mActivePolicies.add(view);
271                    mAdminPolicies.addView(view);
272                }
273            }
274            setViewVisibility(mActivePolicies, View.VISIBLE);
275            setViewVisibility(mAddingPolicies, View.GONE);
276            mAdminWarning.setText(getString(R.string.device_admin_status,
277                    mDeviceAdmin.getActivityInfo().applicationInfo.loadLabel(getPackageManager())));
278            mTitle.setText(getText(R.string.active_device_admin_msg));
279            mActionButton.setText(getText(R.string.remove_device_admin));
280            mAdding = false;
281        } else {
282            if (mAddingPolicies.size() == 0) {
283                ArrayList<DeviceAdminInfo.PolicyInfo> policies = mDeviceAdmin.getUsedPolicies();
284                for (int i=0; i<policies.size(); i++) {
285                    DeviceAdminInfo.PolicyInfo pi = policies.get(i);
286                    View view = AppSecurityPermissions.getPermissionItemView(
287                            this, getText(pi.label), getText(pi.description), true);
288                    mAddingPolicies.add(view);
289                    mAdminPolicies.addView(view);
290                }
291            }
292            setViewVisibility(mAddingPolicies, View.VISIBLE);
293            setViewVisibility(mActivePolicies, View.GONE);
294            mAdminWarning.setText(getString(R.string.device_admin_warning,
295                    mDeviceAdmin.getActivityInfo().applicationInfo.loadLabel(getPackageManager())));
296            mTitle.setText(getText(R.string.add_device_admin_msg));
297            mActionButton.setText(getText(R.string.add_device_admin));
298            mAdding = true;
299        }
300    }
301
302
303    void toggleMessageEllipsis(View v) {
304        TextView tv = (TextView) v;
305
306        mAddMsgEllipsized = ! mAddMsgEllipsized;
307        tv.setEllipsize(mAddMsgEllipsized ? TruncateAt.END : null);
308        tv.setMaxLines(mAddMsgEllipsized ? getEllipsizedLines() : MAX_ADD_MSG_LINES);
309
310        ImageView iv = (ImageView) findViewById(R.id.add_msg_expander);
311        iv.setImageResource(mAddMsgEllipsized ?
312            com.android.internal.R.drawable.expander_ic_minimized :
313            com.android.internal.R.drawable.expander_ic_maximized);
314    }
315
316    int getEllipsizedLines() {
317        Display d = ((WindowManager) getSystemService(Context.WINDOW_SERVICE))
318                    .getDefaultDisplay();
319
320        return d.getHeight() > d.getWidth() ?
321            MAX_ADD_MSG_LINES_PORTRAIT : MAX_ADD_MSG_LINES_LANDSCAPE;
322    }
323
324}
325