src/com/android/settings/DeviceAdminAdd.java - platform/packages/apps/Settings - Git at Google

 /*
  * Copyright (C) 2010 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 package com.android.settings;

 import org.xmlpull.v1.XmlPullParserException;

 import android.app.Activity;
 import android.app.ActivityManagerNative;
 import android.app.AlertDialog;
 import android.app.Dialog;
 import android.app.admin.DeviceAdminInfo;
 import android.app.admin.DeviceAdminReceiver;
 import android.app.admin.DevicePolicyManager;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.pm.ActivityInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
 import android.content.res.Resources;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.RemoteCallback;
 import android.os.RemoteException;
 import android.text.TextUtils.TruncateAt;
 import android.util.Log;
 import android.view.Display;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.WindowManager;
 import android.widget.AppSecurityPermissions;
 import android.widget.Button;
 import android.widget.ImageView;
 import android.widget.TextView;

 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.List;

 public class DeviceAdminAdd extends Activity {
     static final String TAG = "DeviceAdminAdd";

     static final int DIALOG_WARNING = 1;

     private static final int MAX_ADD_MSG_LINES_PORTRAIT = 5;
     private static final int MAX_ADD_MSG_LINES_LANDSCAPE = 2;
     private static final int MAX_ADD_MSG_LINES = 15;

     Handler mHandler;

     DevicePolicyManager mDPM;
     DeviceAdminInfo mDeviceAdmin;
     CharSequence mAddMsgText;

     ImageView mAdminIcon;
     TextView mAdminName;
     TextView mAdminDescription;
     TextView mAddMsg;
     ImageView mAddMsgExpander;
     boolean mAddMsgEllipsized = true;
     TextView mAdminWarning;
     ViewGroup mAdminPolicies;
     Button mActionButton;
     Button mCancelButton;

     final ArrayList<View> mAddingPolicies = new ArrayList<View>();
     final ArrayList<View> mActivePolicies = new ArrayList<View>();

     boolean mAdding;
     boolean mRefreshing;

     @Override
     protected void onCreate(Bundle icicle) {
         super.onCreate(icicle);

         mHandler = new Handler(getMainLooper());

         mDPM = (DevicePolicyManager)getSystemService(Context.DEVICE_POLICY_SERVICE);

         if ((getIntent().getFlags()&Intent.FLAG_ACTIVITY_NEW_TASK) != 0) {
             Log.w(TAG, "Cannot start ADD_DEVICE_ADMIN as a new task");
             finish();
             return;
         }

         ComponentName cn = (ComponentName)getIntent().getParcelableExtra(
                 DevicePolicyManager.EXTRA_DEVICE_ADMIN);
         if (cn == null) {
             Log.w(TAG, "No component specified in " + getIntent().getAction());
             finish();
             return;
         }

         ActivityInfo ai;
         try {
             ai = getPackageManager().getReceiverInfo(cn, PackageManager.GET_META_DATA);
         } catch (PackageManager.NameNotFoundException e) {
             Log.w(TAG, "Unable to retrieve device policy " + cn, e);
             finish();
             return;
         }

         // When activating, make sure the given component name is actually a valid device admin.
         // No need to check this when deactivating, because it is safe to deactivate an active
         // invalid device admin.
         if (!mDPM.isAdminActive(cn)) {
             List<ResolveInfo> avail = getPackageManager().queryBroadcastReceivers(
                     new Intent(DeviceAdminReceiver.ACTION_DEVICE_ADMIN_ENABLED),
                     PackageManager.GET_DISABLED_UNTIL_USED_COMPONENTS);
             int count = avail == null ? 0 : avail.size();
             boolean found = false;
             for (int i=0; i<count; i++) {
                 ResolveInfo ri = avail.get(i);
                 if (ai.packageName.equals(ri.activityInfo.packageName)
                         && ai.name.equals(ri.activityInfo.name)) {
                     try {
                         // We didn't retrieve the meta data for all possible matches, so
                         // need to use the activity info of this specific one that was retrieved.
                         ri.activityInfo = ai;
                         DeviceAdminInfo dpi = new DeviceAdminInfo(this, ri);
                         found = true;
                     } catch (XmlPullParserException e) {
                         Log.w(TAG, "Bad " + ri.activityInfo, e);
                     } catch (IOException e) {
                         Log.w(TAG, "Bad " + ri.activityInfo, e);
                     }
                     break;
                 }
             }
             if (!found) {
                 Log.w(TAG, "Request to add invalid device admin: " + cn);
                 finish();
                 return;
             }
         }

         ResolveInfo ri = new ResolveInfo();
         ri.activityInfo = ai;
         try {
             mDeviceAdmin = new DeviceAdminInfo(this, ri);
         } catch (XmlPullParserException e) {
             Log.w(TAG, "Unable to retrieve device policy " + cn, e);
             finish();
             return;
         } catch (IOException e) {
             Log.w(TAG, "Unable to retrieve device policy " + cn, e);
             finish();
             return;
         }

         // This admin already exists, an we have two options at this point.  If new policy
         // bits are set, show the user the new list.  If nothing has changed, simply return
         // "OK" immediately.
         if (DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN.equals(getIntent().getAction())) {
             mRefreshing = false;
             if (mDPM.isAdminActive(cn)) {
                 ArrayList<DeviceAdminInfo.PolicyInfo> newPolicies = mDeviceAdmin.getUsedPolicies();
                 for (int i = 0; i < newPolicies.size(); i++) {
                     DeviceAdminInfo.PolicyInfo pi = newPolicies.get(i);
                     if (!mDPM.hasGrantedPolicy(cn, pi.ident)) {
                         mRefreshing = true;
                         break;
                     }
                 }
                 if (!mRefreshing) {
                     // Nothing changed (or policies were removed) - return immediately
                     setResult(Activity.RESULT_OK);
                     finish();
                     return;
                 }
             }
         }
         mAddMsgText = getIntent().getCharSequenceExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION);

         setContentView(R.layout.device_admin_add);

         mAdminIcon = (ImageView)findViewById(R.id.admin_icon);
         mAdminName = (TextView)findViewById(R.id.admin_name);
         mAdminDescription = (TextView)findViewById(R.id.admin_description);

         mAddMsg = (TextView)findViewById(R.id.add_msg);
         mAddMsgExpander = (ImageView) findViewById(R.id.add_msg_expander);
         mAddMsg.setOnClickListener(new View.OnClickListener() {
             public void onClick(View v) {
                 toggleMessageEllipsis(v);
             }
         });

         // toggleMessageEllipsis also handles initial layout:
         toggleMessageEllipsis(mAddMsg);

         mAdminWarning = (TextView) findViewById(R.id.admin_warning);
         mAdminPolicies = (ViewGroup) findViewById(R.id.admin_policies);
         mCancelButton = (Button) findViewById(R.id.cancel_button);
         mCancelButton.setOnClickListener(new View.OnClickListener() {
             public void onClick(View v) {
                 finish();
             }
         });
         mActionButton = (Button) findViewById(R.id.action_button);
         mActionButton.setOnClickListener(new View.OnClickListener() {
             public void onClick(View v) {
                 if (mAdding) {
                     try {
                         mDPM.setActiveAdmin(mDeviceAdmin.getComponent(), mRefreshing);
                         setResult(Activity.RESULT_OK);
                     } catch (RuntimeException e) {
                         // Something bad happened...  could be that it was
                         // already set, though.
                         Log.w(TAG, "Exception trying to activate admin "
                                 + mDeviceAdmin.getComponent(), e);
                         if (mDPM.isAdminActive(mDeviceAdmin.getComponent())) {
                             setResult(Activity.RESULT_OK);
                         }
                     }
                     finish();
                 } else {
                     try {
                         // Don't allow the admin to put a dialog up in front
                         // of us while we interact with the user.
                         ActivityManagerNative.getDefault().stopAppSwitches();
                     } catch (RemoteException e) {
                     }
                     mDPM.getRemoveWarning(mDeviceAdmin.getComponent(),
                             new RemoteCallback(mHandler) {
                         @Override
                         protected void onResult(Bundle bundle) {
                             CharSequence msg = bundle != null
                                     ? bundle.getCharSequence(
                                             DeviceAdminReceiver.EXTRA_DISABLE_WARNING)
                                     : null;
                             if (msg == null) {
                                 try {
                                     ActivityManagerNative.getDefault().resumeAppSwitches();
                                 } catch (RemoteException e) {
                                 }
                                 mDPM.removeActiveAdmin(mDeviceAdmin.getComponent());
                                 finish();
                             } else {
                                 Bundle args = new Bundle();
                                 args.putCharSequence(
                                         DeviceAdminReceiver.EXTRA_DISABLE_WARNING, msg);
                                 showDialog(DIALOG_WARNING, args);
                             }
                         }
                     });
                 }
             }
         });
     }

     @Override
     protected void onResume() {
         super.onResume();
         updateInterface();
     }

     @Override
     protected Dialog onCreateDialog(int id, Bundle args) {
         switch (id) {
             case DIALOG_WARNING: {
                 CharSequence msg = args.getCharSequence(DeviceAdminReceiver.EXTRA_DISABLE_WARNING);
                 AlertDialog.Builder builder = new AlertDialog.Builder(
                         DeviceAdminAdd.this);
                 builder.setMessage(msg);
                 builder.setPositiveButton(R.string.dlg_ok,
                         new DialogInterface.OnClickListener() {
                     public void onClick(DialogInterface dialog, int which) {
                         mDPM.removeActiveAdmin(mDeviceAdmin.getComponent());
                         finish();
                     }
                 });
                 builder.setNegativeButton(R.string.dlg_cancel, null);
                 return builder.create();
             }
             default:
                 return super.onCreateDialog(id, args);

         }
     }

     static void setViewVisibility(ArrayList<View> views, int visibility) {
         final int N = views.size();
         for (int i=0; i<N; i++) {
             views.get(i).setVisibility(visibility);
         }
     }

     void updateInterface() {
         mAdminIcon.setImageDrawable(mDeviceAdmin.loadIcon(getPackageManager()));
         mAdminName.setText(mDeviceAdmin.loadLabel(getPackageManager()));
         try {
             mAdminDescription.setText(
                     mDeviceAdmin.loadDescription(getPackageManager()));
             mAdminDescription.setVisibility(View.VISIBLE);
         } catch (Resources.NotFoundException e) {
             mAdminDescription.setVisibility(View.GONE);
         }
         if (mAddMsgText != null) {
             mAddMsg.setText(mAddMsgText);
             mAddMsg.setVisibility(View.VISIBLE);
         } else {
             mAddMsg.setVisibility(View.GONE);
             mAddMsgExpander.setVisibility(View.GONE);
         }
         if (!mRefreshing && mDPM.isAdminActive(mDeviceAdmin.getComponent())) {
             if (mActivePolicies.size() == 0) {
                 ArrayList<DeviceAdminInfo.PolicyInfo> policies = mDeviceAdmin.getUsedPolicies();
                 for (int i=0; i<policies.size(); i++) {
                     DeviceAdminInfo.PolicyInfo pi = policies.get(i);
                     View view = AppSecurityPermissions.getPermissionItemView(
                             this, getText(pi.label), "", true);
                     mActivePolicies.add(view);
                     mAdminPolicies.addView(view);
                 }
             }
             setViewVisibility(mActivePolicies, View.VISIBLE);
             setViewVisibility(mAddingPolicies, View.GONE);
             mAdminWarning.setText(getString(R.string.device_admin_status,
                     mDeviceAdmin.getActivityInfo().applicationInfo.loadLabel(getPackageManager())));
             setTitle(getText(R.string.active_device_admin_msg));
             mActionButton.setText(getText(R.string.remove_device_admin));
             mAdding = false;
         } else {
             if (mAddingPolicies.size() == 0) {
                 ArrayList<DeviceAdminInfo.PolicyInfo> policies = mDeviceAdmin.getUsedPolicies();
                 for (int i=0; i<policies.size(); i++) {
                     DeviceAdminInfo.PolicyInfo pi = policies.get(i);
                     View view = AppSecurityPermissions.getPermissionItemView(
                             this, getText(pi.label), getText(pi.description), true);
                     mAddingPolicies.add(view);
                     mAdminPolicies.addView(view);
                 }
             }
             setViewVisibility(mAddingPolicies, View.VISIBLE);
             setViewVisibility(mActivePolicies, View.GONE);
             mAdminWarning.setText(getString(R.string.device_admin_warning,
                     mDeviceAdmin.getActivityInfo().applicationInfo.loadLabel(getPackageManager())));
             setTitle(getText(R.string.add_device_admin_msg));
             mActionButton.setText(getText(R.string.add_device_admin));
             mAdding = true;
         }
     }


     void toggleMessageEllipsis(View v) {
         TextView tv = (TextView) v;

         mAddMsgEllipsized = ! mAddMsgEllipsized;
         tv.setEllipsize(mAddMsgEllipsized ? TruncateAt.END : null);
         tv.setMaxLines(mAddMsgEllipsized ? getEllipsizedLines() : MAX_ADD_MSG_LINES);

         mAddMsgExpander.setImageResource(mAddMsgEllipsized ?
             com.android.internal.R.drawable.expander_ic_minimized :
             com.android.internal.R.drawable.expander_ic_maximized);
     }

     int getEllipsizedLines() {
         Display d = ((WindowManager) getSystemService(Context.WINDOW_SERVICE))
                     .getDefaultDisplay();

         return d.getHeight() > d.getWidth() ?
             MAX_ADD_MSG_LINES_PORTRAIT : MAX_ADD_MSG_LINES_LANDSCAPE;
     }

 }
	/*
	* Copyright (C) 2010 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	package com.android.settings;

	import org.xmlpull.v1.XmlPullParserException;

	import android.app.Activity;
	import android.app.ActivityManagerNative;
	import android.app.AlertDialog;
	import android.app.Dialog;
	import android.app.admin.DeviceAdminInfo;
	import android.app.admin.DeviceAdminReceiver;
	import android.app.admin.DevicePolicyManager;
	import android.content.ComponentName;
	import android.content.Context;
	import android.content.DialogInterface;
	import android.content.Intent;
	import android.content.pm.ActivityInfo;
	import android.content.pm.PackageManager;
	import android.content.pm.ResolveInfo;
	import android.content.res.Resources;
	import android.os.Bundle;
	import android.os.Handler;
	import android.os.RemoteCallback;
	import android.os.RemoteException;
	import android.text.TextUtils.TruncateAt;
	import android.util.Log;
	import android.view.Display;
	import android.view.View;
	import android.view.ViewGroup;
	import android.view.WindowManager;
	import android.widget.AppSecurityPermissions;
	import android.widget.Button;
	import android.widget.ImageView;
	import android.widget.TextView;

	import java.io.IOException;
	import java.util.ArrayList;
	import java.util.HashSet;
	import java.util.List;

	public class DeviceAdminAdd extends Activity {
	static final String TAG = "DeviceAdminAdd";

	static final int DIALOG_WARNING = 1;

	private static final int MAX_ADD_MSG_LINES_PORTRAIT = 5;
	private static final int MAX_ADD_MSG_LINES_LANDSCAPE = 2;
	private static final int MAX_ADD_MSG_LINES = 15;

	Handler mHandler;

	DevicePolicyManager mDPM;
	DeviceAdminInfo mDeviceAdmin;
	CharSequence mAddMsgText;

	ImageView mAdminIcon;
	TextView mAdminName;
	TextView mAdminDescription;
	TextView mAddMsg;
	ImageView mAddMsgExpander;
	boolean mAddMsgEllipsized = true;
	TextView mAdminWarning;
	ViewGroup mAdminPolicies;
	Button mActionButton;
	Button mCancelButton;

	final ArrayList<View> mAddingPolicies = new ArrayList<View>();
	final ArrayList<View> mActivePolicies = new ArrayList<View>();

	boolean mAdding;
	boolean mRefreshing;

	@Override
	protected void onCreate(Bundle icicle) {
	super.onCreate(icicle);

	mHandler = new Handler(getMainLooper());

	mDPM = (DevicePolicyManager)getSystemService(Context.DEVICE_POLICY_SERVICE);

	if ((getIntent().getFlags()&Intent.FLAG_ACTIVITY_NEW_TASK) != 0) {
	Log.w(TAG, "Cannot start ADD_DEVICE_ADMIN as a new task");
	finish();
	return;
	}

	ComponentName cn = (ComponentName)getIntent().getParcelableExtra(
	DevicePolicyManager.EXTRA_DEVICE_ADMIN);
	if (cn == null) {
	Log.w(TAG, "No component specified in " + getIntent().getAction());
	finish();
	return;
	}

	ActivityInfo ai;
	try {
	ai = getPackageManager().getReceiverInfo(cn, PackageManager.GET_META_DATA);
	} catch (PackageManager.NameNotFoundException e) {
	Log.w(TAG, "Unable to retrieve device policy " + cn, e);
	finish();
	return;
	}

	// When activating, make sure the given component name is actually a valid device admin.
	// No need to check this when deactivating, because it is safe to deactivate an active
	// invalid device admin.
	if (!mDPM.isAdminActive(cn)) {
	List<ResolveInfo> avail = getPackageManager().queryBroadcastReceivers(
	new Intent(DeviceAdminReceiver.ACTION_DEVICE_ADMIN_ENABLED),
	PackageManager.GET_DISABLED_UNTIL_USED_COMPONENTS);
	int count = avail == null ? 0 : avail.size();
	boolean found = false;
	for (int i=0; i<count; i++) {
	ResolveInfo ri = avail.get(i);
	if (ai.packageName.equals(ri.activityInfo.packageName)
	&& ai.name.equals(ri.activityInfo.name)) {
	try {
	// We didn't retrieve the meta data for all possible matches, so
	// need to use the activity info of this specific one that was retrieved.
	ri.activityInfo = ai;
	DeviceAdminInfo dpi = new DeviceAdminInfo(this, ri);
	found = true;
	} catch (XmlPullParserException e) {
	Log.w(TAG, "Bad " + ri.activityInfo, e);
	} catch (IOException e) {
	Log.w(TAG, "Bad " + ri.activityInfo, e);
	}
	break;
	}
	}
	if (!found) {
	Log.w(TAG, "Request to add invalid device admin: " + cn);
	finish();
	return;
	}
	}

	ResolveInfo ri = new ResolveInfo();
	ri.activityInfo = ai;
	try {
	mDeviceAdmin = new DeviceAdminInfo(this, ri);
	} catch (XmlPullParserException e) {
	Log.w(TAG, "Unable to retrieve device policy " + cn, e);
	finish();
	return;
	} catch (IOException e) {
	Log.w(TAG, "Unable to retrieve device policy " + cn, e);
	finish();
	return;
	}

	// This admin already exists, an we have two options at this point. If new policy
	// bits are set, show the user the new list. If nothing has changed, simply return
	// "OK" immediately.
	if (DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN.equals(getIntent().getAction())) {
	mRefreshing = false;
	if (mDPM.isAdminActive(cn)) {
	ArrayList<DeviceAdminInfo.PolicyInfo> newPolicies = mDeviceAdmin.getUsedPolicies();
	for (int i = 0; i < newPolicies.size(); i++) {
	DeviceAdminInfo.PolicyInfo pi = newPolicies.get(i);
	if (!mDPM.hasGrantedPolicy(cn, pi.ident)) {
	mRefreshing = true;
	break;
	}
	}
	if (!mRefreshing) {
	// Nothing changed (or policies were removed) - return immediately
	setResult(Activity.RESULT_OK);
	finish();
	return;
	}
	}
	}
	mAddMsgText = getIntent().getCharSequenceExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION);

	setContentView(R.layout.device_admin_add);

	mAdminIcon = (ImageView)findViewById(R.id.admin_icon);
	mAdminName = (TextView)findViewById(R.id.admin_name);
	mAdminDescription = (TextView)findViewById(R.id.admin_description);

	mAddMsg = (TextView)findViewById(R.id.add_msg);
	mAddMsgExpander = (ImageView) findViewById(R.id.add_msg_expander);
	mAddMsg.setOnClickListener(new View.OnClickListener() {
	public void onClick(View v) {
	toggleMessageEllipsis(v);
	}
	});

	// toggleMessageEllipsis also handles initial layout:
	toggleMessageEllipsis(mAddMsg);

	mAdminWarning = (TextView) findViewById(R.id.admin_warning);
	mAdminPolicies = (ViewGroup) findViewById(R.id.admin_policies);
	mCancelButton = (Button) findViewById(R.id.cancel_button);
	mCancelButton.setOnClickListener(new View.OnClickListener() {
	public void onClick(View v) {
	finish();
	}
	});
	mActionButton = (Button) findViewById(R.id.action_button);
	mActionButton.setOnClickListener(new View.OnClickListener() {
	public void onClick(View v) {
	if (mAdding) {
	try {
	mDPM.setActiveAdmin(mDeviceAdmin.getComponent(), mRefreshing);
	setResult(Activity.RESULT_OK);
	} catch (RuntimeException e) {
	// Something bad happened... could be that it was
	// already set, though.
	Log.w(TAG, "Exception trying to activate admin "
	+ mDeviceAdmin.getComponent(), e);
	if (mDPM.isAdminActive(mDeviceAdmin.getComponent())) {
	setResult(Activity.RESULT_OK);
	}
	}
	finish();
	} else {
	try {
	// Don't allow the admin to put a dialog up in front
	// of us while we interact with the user.
	ActivityManagerNative.getDefault().stopAppSwitches();
	} catch (RemoteException e) {
	}
	mDPM.getRemoveWarning(mDeviceAdmin.getComponent(),
	new RemoteCallback(mHandler) {
	@Override
	protected void onResult(Bundle bundle) {
	CharSequence msg = bundle != null
	? bundle.getCharSequence(
	DeviceAdminReceiver.EXTRA_DISABLE_WARNING)
	: null;
	if (msg == null) {
	try {
	ActivityManagerNative.getDefault().resumeAppSwitches();
	} catch (RemoteException e) {
	}
	mDPM.removeActiveAdmin(mDeviceAdmin.getComponent());
	finish();
	} else {
	Bundle args = new Bundle();
	args.putCharSequence(
	DeviceAdminReceiver.EXTRA_DISABLE_WARNING, msg);
	showDialog(DIALOG_WARNING, args);
	}
	}
	});
	}
	}
	});
	}

	@Override
	protected void onResume() {
	super.onResume();
	updateInterface();
	}

	@Override
	protected Dialog onCreateDialog(int id, Bundle args) {
	switch (id) {
	case DIALOG_WARNING: {
	CharSequence msg = args.getCharSequence(DeviceAdminReceiver.EXTRA_DISABLE_WARNING);
	AlertDialog.Builder builder = new AlertDialog.Builder(
	DeviceAdminAdd.this);
	builder.setMessage(msg);
	builder.setPositiveButton(R.string.dlg_ok,
	new DialogInterface.OnClickListener() {
	public void onClick(DialogInterface dialog, int which) {
	mDPM.removeActiveAdmin(mDeviceAdmin.getComponent());
	finish();
	}
	});
	builder.setNegativeButton(R.string.dlg_cancel, null);
	return builder.create();
	}
	default:
	return super.onCreateDialog(id, args);

	}
	}

	static void setViewVisibility(ArrayList<View> views, int visibility) {
	final int N = views.size();
	for (int i=0; i<N; i++) {
	views.get(i).setVisibility(visibility);
	}
	}

	void updateInterface() {
	mAdminIcon.setImageDrawable(mDeviceAdmin.loadIcon(getPackageManager()));
	mAdminName.setText(mDeviceAdmin.loadLabel(getPackageManager()));
	try {
	mAdminDescription.setText(
	mDeviceAdmin.loadDescription(getPackageManager()));
	mAdminDescription.setVisibility(View.VISIBLE);
	} catch (Resources.NotFoundException e) {
	mAdminDescription.setVisibility(View.GONE);
	}
	if (mAddMsgText != null) {
	mAddMsg.setText(mAddMsgText);
	mAddMsg.setVisibility(View.VISIBLE);
	} else {
	mAddMsg.setVisibility(View.GONE);
	mAddMsgExpander.setVisibility(View.GONE);
	}
	if (!mRefreshing && mDPM.isAdminActive(mDeviceAdmin.getComponent())) {
	if (mActivePolicies.size() == 0) {
	ArrayList<DeviceAdminInfo.PolicyInfo> policies = mDeviceAdmin.getUsedPolicies();
	for (int i=0; i<policies.size(); i++) {
	DeviceAdminInfo.PolicyInfo pi = policies.get(i);
	View view = AppSecurityPermissions.getPermissionItemView(
	this, getText(pi.label), "", true);
	mActivePolicies.add(view);
	mAdminPolicies.addView(view);
	}
	}
	setViewVisibility(mActivePolicies, View.VISIBLE);
	setViewVisibility(mAddingPolicies, View.GONE);
	mAdminWarning.setText(getString(R.string.device_admin_status,
	mDeviceAdmin.getActivityInfo().applicationInfo.loadLabel(getPackageManager())));
	setTitle(getText(R.string.active_device_admin_msg));
	mActionButton.setText(getText(R.string.remove_device_admin));
	mAdding = false;
	} else {
	if (mAddingPolicies.size() == 0) {
	ArrayList<DeviceAdminInfo.PolicyInfo> policies = mDeviceAdmin.getUsedPolicies();
	for (int i=0; i<policies.size(); i++) {
	DeviceAdminInfo.PolicyInfo pi = policies.get(i);
	View view = AppSecurityPermissions.getPermissionItemView(
	this, getText(pi.label), getText(pi.description), true);
	mAddingPolicies.add(view);
	mAdminPolicies.addView(view);
	}
	}
	setViewVisibility(mAddingPolicies, View.VISIBLE);
	setViewVisibility(mActivePolicies, View.GONE);
	mAdminWarning.setText(getString(R.string.device_admin_warning,
	mDeviceAdmin.getActivityInfo().applicationInfo.loadLabel(getPackageManager())));
	setTitle(getText(R.string.add_device_admin_msg));
	mActionButton.setText(getText(R.string.add_device_admin));
	mAdding = true;
	}
	}


	void toggleMessageEllipsis(View v) {
	TextView tv = (TextView) v;

	mAddMsgEllipsized = ! mAddMsgEllipsized;
	tv.setEllipsize(mAddMsgEllipsized ? TruncateAt.END : null);
	tv.setMaxLines(mAddMsgEllipsized ? getEllipsizedLines() : MAX_ADD_MSG_LINES);

	mAddMsgExpander.setImageResource(mAddMsgEllipsized ?
	com.android.internal.R.drawable.expander_ic_minimized :
	com.android.internal.R.drawable.expander_ic_maximized);
	}

	int getEllipsizedLines() {
	Display d = ((WindowManager) getSystemService(Context.WINDOW_SERVICE))
	.getDefaultDisplay();

	return d.getHeight() > d.getWidth() ?
	MAX_ADD_MSG_LINES_PORTRAIT : MAX_ADD_MSG_LINES_LANDSCAPE;
	}

	}