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      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 
     17 package com.android.settings;
     18 
     19 import android.app.Activity;
     20 import android.app.ActivityManagerNative;
     21 import android.app.AlertDialog;
     22 import android.app.AppOpsManager;
     23 import android.app.Dialog;
     24 import android.app.admin.DeviceAdminInfo;
     25 import android.app.admin.DeviceAdminReceiver;
     26 import android.app.admin.DevicePolicyManager;
     27 import android.content.ComponentName;
     28 import android.content.Context;
     29 import android.content.DialogInterface;
     30 import android.content.Intent;
     31 import android.content.pm.ActivityInfo;
     32 import android.content.pm.ApplicationInfo;
     33 import android.content.pm.PackageInfo;
     34 import android.content.pm.PackageManager;
     35 import android.content.pm.PackageManager.NameNotFoundException;
     36 import android.content.pm.ResolveInfo;
     37 import android.content.pm.UserInfo;
     38 import android.content.res.Resources;
     39 import android.net.Uri;
     40 import android.os.Binder;
     41 import android.os.Bundle;
     42 import android.os.Handler;
     43 import android.os.RemoteCallback;
     44 import android.os.RemoteException;
     45 import android.os.UserHandle;
     46 import android.os.UserManager;
     47 import android.text.TextUtils;
     48 import android.text.TextUtils.TruncateAt;
     49 import android.util.EventLog;
     50 import android.util.Log;
     51 import android.view.Display;
     52 import android.view.View;
     53 import android.view.ViewGroup;
     54 import android.view.ViewTreeObserver;
     55 import android.view.WindowManager;
     56 import android.widget.AppSecurityPermissions;
     57 import android.widget.Button;
     58 import android.widget.ImageView;
     59 import android.widget.TextView;
     60 
     61 import com.android.settings.users.UserDialogs;
     62 
     63 import org.xmlpull.v1.XmlPullParserException;
     64 
     65 import java.io.IOException;
     66 import java.util.ArrayList;
     67 import java.util.List;
     68 
     69 public class DeviceAdminAdd extends Activity {
     70     static final String TAG = "DeviceAdminAdd";
     71 
     72     static final int DIALOG_WARNING = 1;
     73 
     74     private static final int MAX_ADD_MSG_LINES_PORTRAIT = 5;
     75     private static final int MAX_ADD_MSG_LINES_LANDSCAPE = 2;
     76     private static final int MAX_ADD_MSG_LINES = 15;
     77 
     78     /**
     79      * Optional key to map to the package name of the Device Admin.
     80      * Currently only used when uninstalling an active device admin.
     81      */
     82     public static final String EXTRA_DEVICE_ADMIN_PACKAGE_NAME =
     83             "android.app.extra.DEVICE_ADMIN_PACKAGE_NAME";
     84 
     85     public static final String EXTRA_CALLED_FROM_SUPPORT_DIALOG =
     86             "android.app.extra.CALLED_FROM_SUPPORT_DIALOG";
     87 
     88     Handler mHandler;
     89 
     90     DevicePolicyManager mDPM;
     91     AppOpsManager mAppOps;
     92     DeviceAdminInfo mDeviceAdmin;
     93     CharSequence mAddMsgText;
     94     String mProfileOwnerName;
     95 
     96     ImageView mAdminIcon;
     97     TextView mAdminName;
     98     TextView mAdminDescription;
     99     TextView mAddMsg;
    100     TextView mProfileOwnerWarning;
    101     ImageView mAddMsgExpander;
    102     boolean mAddMsgEllipsized = true;
    103     TextView mAdminWarning;
    104     TextView mSupportMessage;
    105     ViewGroup mAdminPolicies;
    106     Button mActionButton;
    107     Button mUninstallButton;
    108     Button mCancelButton;
    109 
    110     boolean mUninstalling = false;
    111     boolean mAdding;
    112     boolean mRefreshing;
    113     boolean mWaitingForRemoveMsg;
    114     boolean mAddingProfileOwner;
    115     boolean mAdminPoliciesInitialized;
    116     int mCurSysAppOpMode;
    117     int mCurToastAppOpMode;
    118 
    119     boolean mIsCalledFromSupportDialog = false;
    120 
    121     @Override
    122     protected void onCreate(Bundle icicle) {
    123         super.onCreate(icicle);
    124 
    125         mHandler = new Handler(getMainLooper());
    126 
    127         mDPM = (DevicePolicyManager)getSystemService(Context.DEVICE_POLICY_SERVICE);
    128         mAppOps = (AppOpsManager)getSystemService(Context.APP_OPS_SERVICE);
    129         PackageManager packageManager = getPackageManager();
    130 
    131         if ((getIntent().getFlags()&Intent.FLAG_ACTIVITY_NEW_TASK) != 0) {
    132             Log.w(TAG, "Cannot start ADD_DEVICE_ADMIN as a new task");
    133             finish();
    134             return;
    135         }
    136 
    137         mIsCalledFromSupportDialog = getIntent().getBooleanExtra(
    138                 EXTRA_CALLED_FROM_SUPPORT_DIALOG, false);
    139 
    140         String action = getIntent().getAction();
    141         ComponentName who = (ComponentName)getIntent().getParcelableExtra(
    142                 DevicePolicyManager.EXTRA_DEVICE_ADMIN);
    143         if (who == null) {
    144             String packageName = getIntent().getStringExtra(EXTRA_DEVICE_ADMIN_PACKAGE_NAME);
    145             for (ComponentName component : mDPM.getActiveAdmins()) {
    146                 if (component.getPackageName().equals(packageName)) {
    147                     who = component;
    148                     mUninstalling = true;
    149                     break;
    150                 }
    151             }
    152             if (who == null) {
    153                 Log.w(TAG, "No component specified in " + action);
    154                 finish();
    155                 return;
    156             }
    157         }
    158 
    159         if (action != null && action.equals(DevicePolicyManager.ACTION_SET_PROFILE_OWNER)) {
    160             setResult(RESULT_CANCELED);
    161             setFinishOnTouchOutside(true);
    162             mAddingProfileOwner = true;
    163             mProfileOwnerName =
    164                     getIntent().getStringExtra(DevicePolicyManager.EXTRA_PROFILE_OWNER_NAME);
    165             String callingPackage = getCallingPackage();
    166             if (callingPackage == null || !callingPackage.equals(who.getPackageName())) {
    167                 Log.e(TAG, "Unknown or incorrect caller");
    168                 finish();
    169                 return;
    170             }
    171             try {
    172                 PackageInfo packageInfo = packageManager.getPackageInfo(callingPackage, 0);
    173                 if ((packageInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) == 0) {
    174                     Log.e(TAG, "Cannot set a non-system app as a profile owner");
    175                     finish();
    176                     return;
    177                 }
    178             } catch (NameNotFoundException nnfe) {
    179                 Log.e(TAG, "Cannot find the package " + callingPackage);
    180                 finish();
    181                 return;
    182             }
    183         }
    184 
    185         ActivityInfo ai;
    186         try {
    187             ai = packageManager.getReceiverInfo(who, PackageManager.GET_META_DATA);
    188         } catch (PackageManager.NameNotFoundException e) {
    189             Log.w(TAG, "Unable to retrieve device policy " + who, e);
    190             finish();
    191             return;
    192         }
    193 
    194         // When activating, make sure the given component name is actually a valid device admin.
    195         // No need to check this when deactivating, because it is safe to deactivate an active
    196         // invalid device admin.
    197         if (!mDPM.isAdminActive(who)) {
    198             List<ResolveInfo> avail = packageManager.queryBroadcastReceivers(
    199                     new Intent(DeviceAdminReceiver.ACTION_DEVICE_ADMIN_ENABLED),
    200                     PackageManager.GET_DISABLED_UNTIL_USED_COMPONENTS);
    201             int count = avail == null ? 0 : avail.size();
    202             boolean found = false;
    203             for (int i=0; i<count; i++) {
    204                 ResolveInfo ri = avail.get(i);
    205                 if (ai.packageName.equals(ri.activityInfo.packageName)
    206                         && ai.name.equals(ri.activityInfo.name)) {
    207                     try {
    208                         // We didn't retrieve the meta data for all possible matches, so
    209                         // need to use the activity info of this specific one that was retrieved.
    210                         ri.activityInfo = ai;
    211                         DeviceAdminInfo dpi = new DeviceAdminInfo(this, ri);
    212                         found = true;
    213                     } catch (XmlPullParserException e) {
    214                         Log.w(TAG, "Bad " + ri.activityInfo, e);
    215                     } catch (IOException e) {
    216                         Log.w(TAG, "Bad " + ri.activityInfo, e);
    217                     }
    218                     break;
    219                 }
    220             }
    221             if (!found) {
    222                 Log.w(TAG, "Request to add invalid device admin: " + who);
    223                 finish();
    224                 return;
    225             }
    226         }
    227 
    228         ResolveInfo ri = new ResolveInfo();
    229         ri.activityInfo = ai;
    230         try {
    231             mDeviceAdmin = new DeviceAdminInfo(this, ri);
    232         } catch (XmlPullParserException e) {
    233             Log.w(TAG, "Unable to retrieve device policy " + who, e);
    234             finish();
    235             return;
    236         } catch (IOException e) {
    237             Log.w(TAG, "Unable to retrieve device policy " + who, e);
    238             finish();
    239             return;
    240         }
    241 
    242         // This admin already exists, an we have two options at this point.  If new policy
    243         // bits are set, show the user the new list.  If nothing has changed, simply return
    244         // "OK" immediately.
    245         if (DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN.equals(getIntent().getAction())) {
    246             mRefreshing = false;
    247             if (mDPM.isAdminActive(who)) {
    248                 if (mDPM.isRemovingAdmin(who, android.os.Process.myUserHandle().getIdentifier())) {
    249                     Log.w(TAG, "Requested admin is already being removed: " + who);
    250                     finish();
    251                     return;
    252                 }
    253 
    254                 ArrayList<DeviceAdminInfo.PolicyInfo> newPolicies = mDeviceAdmin.getUsedPolicies();
    255                 for (int i = 0; i < newPolicies.size(); i++) {
    256                     DeviceAdminInfo.PolicyInfo pi = newPolicies.get(i);
    257                     if (!mDPM.hasGrantedPolicy(who, pi.ident)) {
    258                         mRefreshing = true;
    259                         break;
    260                     }
    261                 }
    262                 if (!mRefreshing) {
    263                     // Nothing changed (or policies were removed) - return immediately
    264                     setResult(Activity.RESULT_OK);
    265                     finish();
    266                     return;
    267                 }
    268             }
    269         }
    270 
    271         // If we're trying to add a profile owner and user setup hasn't completed yet, no
    272         // need to prompt for permission. Just add and finish.
    273         if (mAddingProfileOwner && !mDPM.hasUserSetupCompleted()) {
    274             addAndFinish();
    275             return;
    276         }
    277 
    278         mAddMsgText = getIntent().getCharSequenceExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION);
    279 
    280         setContentView(R.layout.device_admin_add);
    281 
    282         mAdminIcon = (ImageView)findViewById(R.id.admin_icon);
    283         mAdminName = (TextView)findViewById(R.id.admin_name);
    284         mAdminDescription = (TextView)findViewById(R.id.admin_description);
    285         mProfileOwnerWarning = (TextView) findViewById(R.id.profile_owner_warning);
    286 
    287         mAddMsg = (TextView)findViewById(R.id.add_msg);
    288         mAddMsgExpander = (ImageView) findViewById(R.id.add_msg_expander);
    289         final View.OnClickListener onClickListener = new View.OnClickListener() {
    290             @Override
    291             public void onClick(View v) {
    292                 toggleMessageEllipsis(mAddMsg);
    293             }
    294         };
    295         mAddMsgExpander.setOnClickListener(onClickListener);
    296         mAddMsg.setOnClickListener(onClickListener);
    297 
    298         // Determine whether the message can be collapsed - getLineCount() gives the correct
    299         // number of lines only after a layout pass.
    300         mAddMsg.getViewTreeObserver().addOnGlobalLayoutListener(
    301                 new ViewTreeObserver.OnGlobalLayoutListener() {
    302                     @Override
    303                     public void onGlobalLayout() {
    304                         final int maxLines = getEllipsizedLines();
    305                         // hide the icon if number of visible lines does not exceed maxLines
    306                         boolean hideMsgExpander = mAddMsg.getLineCount() <= maxLines;
    307                         mAddMsgExpander.setVisibility(hideMsgExpander ? View.GONE : View.VISIBLE);
    308                         if (hideMsgExpander) {
    309                             mAddMsg.setOnClickListener(null);
    310                             ((View)mAddMsgExpander.getParent()).invalidate();
    311                         }
    312                         mAddMsg.getViewTreeObserver().removeOnGlobalLayoutListener(this);
    313                     }
    314                 });
    315 
    316         // toggleMessageEllipsis also handles initial layout:
    317         toggleMessageEllipsis(mAddMsg);
    318 
    319         mAdminWarning = (TextView) findViewById(R.id.admin_warning);
    320         mAdminPolicies = (ViewGroup) findViewById(R.id.admin_policies);
    321         mSupportMessage = (TextView) findViewById(R.id.admin_support_message);
    322 
    323         mCancelButton = (Button) findViewById(R.id.cancel_button);
    324         mCancelButton.setFilterTouchesWhenObscured(true);
    325         mCancelButton.setOnClickListener(new View.OnClickListener() {
    326             public void onClick(View v) {
    327                 EventLog.writeEvent(EventLogTags.EXP_DET_DEVICE_ADMIN_DECLINED_BY_USER,
    328                     mDeviceAdmin.getActivityInfo().applicationInfo.uid);
    329                 finish();
    330             }
    331         });
    332 
    333         mUninstallButton = (Button) findViewById(R.id.uninstall_button);
    334         mUninstallButton.setFilterTouchesWhenObscured(true);
    335         mUninstallButton.setOnClickListener(new View.OnClickListener() {
    336             public void onClick(View v) {
    337                 EventLog.writeEvent(EventLogTags.EXP_DET_DEVICE_ADMIN_UNINSTALLED_BY_USER,
    338                         mDeviceAdmin.getActivityInfo().applicationInfo.uid);
    339                 mDPM.uninstallPackageWithActiveAdmins(mDeviceAdmin.getPackageName());
    340                 finish();
    341             }
    342         });
    343 
    344         mActionButton = (Button) findViewById(R.id.action_button);
    345         mActionButton.setFilterTouchesWhenObscured(true);
    346         mActionButton.setOnClickListener(new View.OnClickListener() {
    347             public void onClick(View v) {
    348                 if (mAdding) {
    349                     addAndFinish();
    350                 } else if (isManagedProfile(mDeviceAdmin)
    351                         && mDeviceAdmin.getComponent().equals(mDPM.getProfileOwner())) {
    352                     final int userId = UserHandle.myUserId();
    353                     UserDialogs.createRemoveDialog(DeviceAdminAdd.this, userId,
    354                             new DialogInterface.OnClickListener() {
    355                                 @Override
    356                                 public void onClick(DialogInterface dialog, int which) {
    357                                     UserManager um = UserManager.get(DeviceAdminAdd.this);
    358                                     um.removeUser(userId);
    359                                     finish();
    360                                 }
    361                             }
    362                             ).show();
    363                 } else if (mUninstalling) {
    364                     mDPM.uninstallPackageWithActiveAdmins(mDeviceAdmin.getPackageName());
    365                     finish();
    366                 } else if (!mWaitingForRemoveMsg) {
    367                     try {
    368                         // Don't allow the admin to put a dialog up in front
    369                         // of us while we interact with the user.
    370                         ActivityManagerNative.getDefault().stopAppSwitches();
    371                     } catch (RemoteException e) {
    372                     }
    373                     mWaitingForRemoveMsg = true;
    374                     mDPM.getRemoveWarning(mDeviceAdmin.getComponent(),
    375                             new RemoteCallback(new RemoteCallback.OnResultListener() {
    376                                 @Override
    377                                 public void onResult(Bundle result) {
    378                                     CharSequence msg = result != null
    379                                             ? result.getCharSequence(
    380                                             DeviceAdminReceiver.EXTRA_DISABLE_WARNING)
    381                                             : null;
    382                                     continueRemoveAction(msg);
    383                                 }
    384                             }, mHandler));
    385                     // Don't want to wait too long.
    386                     getWindow().getDecorView().getHandler().postDelayed(new Runnable() {
    387                         @Override public void run() {
    388                             continueRemoveAction(null);
    389                         }
    390                     }, 2*1000);
    391                 }
    392             }
    393         });
    394     }
    395 
    396     void addAndFinish() {
    397         try {
    398             mDPM.setActiveAdmin(mDeviceAdmin.getComponent(), mRefreshing);
    399             EventLog.writeEvent(EventLogTags.EXP_DET_DEVICE_ADMIN_ACTIVATED_BY_USER,
    400                 mDeviceAdmin.getActivityInfo().applicationInfo.uid);
    401             setResult(Activity.RESULT_OK);
    402         } catch (RuntimeException e) {
    403             // Something bad happened...  could be that it was
    404             // already set, though.
    405             Log.w(TAG, "Exception trying to activate admin "
    406                     + mDeviceAdmin.getComponent(), e);
    407             if (mDPM.isAdminActive(mDeviceAdmin.getComponent())) {
    408                 setResult(Activity.RESULT_OK);
    409             }
    410         }
    411         if (mAddingProfileOwner) {
    412             try {
    413                 mDPM.setProfileOwner(mDeviceAdmin.getComponent(),
    414                         mProfileOwnerName, UserHandle.myUserId());
    415             } catch (RuntimeException re) {
    416                 setResult(Activity.RESULT_CANCELED);
    417             }
    418         }
    419         finish();
    420     }
    421 
    422     void continueRemoveAction(CharSequence msg) {
    423         if (!mWaitingForRemoveMsg) {
    424             return;
    425         }
    426         mWaitingForRemoveMsg = false;
    427         if (msg == null) {
    428             try {
    429                 ActivityManagerNative.getDefault().resumeAppSwitches();
    430             } catch (RemoteException e) {
    431             }
    432             mDPM.removeActiveAdmin(mDeviceAdmin.getComponent());
    433             finish();
    434         } else {
    435             try {
    436                 // Continue preventing anything from coming in front.
    437                 ActivityManagerNative.getDefault().stopAppSwitches();
    438             } catch (RemoteException e) {
    439             }
    440             Bundle args = new Bundle();
    441             args.putCharSequence(
    442                     DeviceAdminReceiver.EXTRA_DISABLE_WARNING, msg);
    443             showDialog(DIALOG_WARNING, args);
    444         }
    445     }
    446 
    447     @Override
    448     protected void onResume() {
    449         super.onResume();
    450         updateInterface();
    451         // As long as we are running, don't let this admin overlay stuff on top of the screen.
    452         final int uid = mDeviceAdmin.getActivityInfo().applicationInfo.uid;
    453         final String pkg = mDeviceAdmin.getActivityInfo().applicationInfo.packageName;
    454         mCurSysAppOpMode = mAppOps.checkOp(AppOpsManager.OP_SYSTEM_ALERT_WINDOW, uid, pkg);
    455         mCurToastAppOpMode = mAppOps.checkOp(AppOpsManager.OP_TOAST_WINDOW, uid, pkg);
    456         mAppOps.setMode(AppOpsManager.OP_SYSTEM_ALERT_WINDOW, uid, pkg, AppOpsManager.MODE_IGNORED);
    457         mAppOps.setMode(AppOpsManager.OP_TOAST_WINDOW, uid, pkg, AppOpsManager.MODE_IGNORED);
    458     }
    459 
    460     @Override
    461     protected void onPause() {
    462         super.onPause();
    463         // As long as we are running, don't let this admin overlay stuff on top of the screen.
    464         final int uid = mDeviceAdmin.getActivityInfo().applicationInfo.uid;
    465         final String pkg = mDeviceAdmin.getActivityInfo().applicationInfo.packageName;
    466         mAppOps.setMode(AppOpsManager.OP_SYSTEM_ALERT_WINDOW, uid, pkg, mCurSysAppOpMode);
    467         mAppOps.setMode(AppOpsManager.OP_TOAST_WINDOW, uid, pkg, mCurToastAppOpMode);
    468         try {
    469             ActivityManagerNative.getDefault().resumeAppSwitches();
    470         } catch (RemoteException e) {
    471         }
    472     }
    473 
    474     @Override
    475     protected void onUserLeaveHint() {
    476         super.onUserLeaveHint();
    477         // In case this is triggered from support dialog, finish this activity once the user leaves
    478         // so that this won't appear as a background next time support dialog is triggered. This
    479         // is because the support dialog activity and this belong to the same task and we can't
    480         // start this in new activity since we need to know the calling package in this activity.
    481         if (mIsCalledFromSupportDialog) {
    482             finish();
    483         }
    484     }
    485 
    486     @Override
    487     protected Dialog onCreateDialog(int id, Bundle args) {
    488         switch (id) {
    489             case DIALOG_WARNING: {
    490                 CharSequence msg = args.getCharSequence(DeviceAdminReceiver.EXTRA_DISABLE_WARNING);
    491                 AlertDialog.Builder builder = new AlertDialog.Builder(this);
    492                 builder.setMessage(msg);
    493                 builder.setPositiveButton(R.string.dlg_ok,
    494                         new DialogInterface.OnClickListener() {
    495                     public void onClick(DialogInterface dialog, int which) {
    496                         try {
    497                             ActivityManagerNative.getDefault().resumeAppSwitches();
    498                         } catch (RemoteException e) {
    499                         }
    500                         mDPM.removeActiveAdmin(mDeviceAdmin.getComponent());
    501                         finish();
    502                     }
    503                 });
    504                 builder.setNegativeButton(R.string.dlg_cancel, null);
    505                 return builder.create();
    506             }
    507             default:
    508                 return super.onCreateDialog(id, args);
    509 
    510         }
    511     }
    512 
    513     void updateInterface() {
    514         mAdminIcon.setImageDrawable(mDeviceAdmin.loadIcon(getPackageManager()));
    515         mAdminName.setText(mDeviceAdmin.loadLabel(getPackageManager()));
    516         try {
    517             mAdminDescription.setText(
    518                     mDeviceAdmin.loadDescription(getPackageManager()));
    519             mAdminDescription.setVisibility(View.VISIBLE);
    520         } catch (Resources.NotFoundException e) {
    521             mAdminDescription.setVisibility(View.GONE);
    522         }
    523         if (mAddingProfileOwner) {
    524             mProfileOwnerWarning.setVisibility(View.VISIBLE);
    525         }
    526         if (mAddMsgText != null) {
    527             mAddMsg.setText(mAddMsgText);
    528             mAddMsg.setVisibility(View.VISIBLE);
    529         } else {
    530             mAddMsg.setVisibility(View.GONE);
    531             mAddMsgExpander.setVisibility(View.GONE);
    532         }
    533         if (!mRefreshing && !mAddingProfileOwner
    534                 && mDPM.isAdminActive(mDeviceAdmin.getComponent())) {
    535             mAdding = false;
    536             final boolean isProfileOwner =
    537                     mDeviceAdmin.getComponent().equals(mDPM.getProfileOwner());
    538             final boolean isManagedProfile = isManagedProfile(mDeviceAdmin);
    539             if (isProfileOwner && isManagedProfile) {
    540                 // Profile owner in a managed profile, user can remove profile to disable admin.
    541                 mAdminWarning.setText(R.string.admin_profile_owner_message);
    542                 mActionButton.setText(R.string.remove_managed_profile_label);
    543             } else if (isProfileOwner || mDeviceAdmin.getComponent().equals(
    544                             mDPM.getDeviceOwnerComponentOnCallingUser())) {
    545                 // Profile owner in a user or device owner, user can't disable admin.
    546                 if (isProfileOwner) {
    547                     // Show profile owner in a user description.
    548                     mAdminWarning.setText(R.string.admin_profile_owner_user_message);
    549                 } else {
    550                     // Show device owner description.
    551                     mAdminWarning.setText(R.string.admin_device_owner_message);
    552                 }
    553                 mActionButton.setText(R.string.remove_device_admin);
    554                 mActionButton.setEnabled(false);
    555             } else {
    556                 addDeviceAdminPolicies(false /* showDescription */);
    557                 mAdminWarning.setText(getString(R.string.device_admin_status,
    558                         mDeviceAdmin.getActivityInfo().applicationInfo.loadLabel(
    559                         getPackageManager())));
    560                 setTitle(R.string.active_device_admin_msg);
    561                 if (mUninstalling) {
    562                     mActionButton.setText(R.string.remove_and_uninstall_device_admin);
    563                 } else {
    564                     mActionButton.setText(R.string.remove_device_admin);
    565                 }
    566             }
    567             CharSequence supportMessage = mDPM.getLongSupportMessageForUser(
    568                     mDeviceAdmin.getComponent(), UserHandle.myUserId());
    569             if (!TextUtils.isEmpty(supportMessage)) {
    570                 mSupportMessage.setText(supportMessage);
    571                 mSupportMessage.setVisibility(View.VISIBLE);
    572             } else {
    573                 mSupportMessage.setVisibility(View.GONE);
    574             }
    575         } else {
    576             addDeviceAdminPolicies(true /* showDescription */);
    577             mAdminWarning.setText(getString(R.string.device_admin_warning,
    578                     mDeviceAdmin.getActivityInfo().applicationInfo.loadLabel(getPackageManager())));
    579             if (mAddingProfileOwner) {
    580                 setTitle(getText(R.string.profile_owner_add_title));
    581             } else {
    582                 setTitle(getText(R.string.add_device_admin_msg));
    583             }
    584             mActionButton.setText(getText(R.string.add_device_admin));
    585             if (isAdminUninstallable()) {
    586                 mUninstallButton.setVisibility(View.VISIBLE);
    587             }
    588             mSupportMessage.setVisibility(View.GONE);
    589             mAdding = true;
    590         }
    591     }
    592 
    593     private void addDeviceAdminPolicies(boolean showDescription) {
    594         if (!mAdminPoliciesInitialized) {
    595             boolean isAdminUser = UserManager.get(this).isAdminUser();
    596             for (DeviceAdminInfo.PolicyInfo pi : mDeviceAdmin.getUsedPolicies()) {
    597                 int descriptionId = isAdminUser ? pi.description : pi.descriptionForSecondaryUsers;
    598                 int labelId = isAdminUser ? pi.label : pi.labelForSecondaryUsers;
    599                 View view = AppSecurityPermissions.getPermissionItemView(this, getText(labelId),
    600                         showDescription ? getText(descriptionId) : "", true);
    601                 mAdminPolicies.addView(view);
    602             }
    603             mAdminPoliciesInitialized = true;
    604         }
    605     }
    606 
    607     void toggleMessageEllipsis(View v) {
    608         TextView tv = (TextView) v;
    609 
    610         mAddMsgEllipsized = ! mAddMsgEllipsized;
    611         tv.setEllipsize(mAddMsgEllipsized ? TruncateAt.END : null);
    612         tv.setMaxLines(mAddMsgEllipsized ? getEllipsizedLines() : MAX_ADD_MSG_LINES);
    613 
    614         mAddMsgExpander.setImageResource(mAddMsgEllipsized ?
    615             com.android.internal.R.drawable.expander_ic_minimized :
    616             com.android.internal.R.drawable.expander_ic_maximized);
    617     }
    618 
    619     int getEllipsizedLines() {
    620         Display d = ((WindowManager) getSystemService(Context.WINDOW_SERVICE))
    621                     .getDefaultDisplay();
    622 
    623         return d.getHeight() > d.getWidth() ?
    624             MAX_ADD_MSG_LINES_PORTRAIT : MAX_ADD_MSG_LINES_LANDSCAPE;
    625     }
    626 
    627     /**
    628      * @return true if adminInfo is running in a managed profile.
    629      */
    630     private boolean isManagedProfile(DeviceAdminInfo adminInfo) {
    631         UserManager um = UserManager.get(this);
    632         UserInfo info = um.getUserInfo(
    633                 UserHandle.getUserId(adminInfo.getActivityInfo().applicationInfo.uid));
    634         return info != null ? info.isManagedProfile() : false;
    635     }
    636 
    637     private boolean isAdminUninstallable() {
    638         // System apps can't be uninstalled.
    639         return !mDeviceAdmin.getActivityInfo().applicationInfo.isSystemApp();
    640     }
    641 }
    642