/*
* 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;
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;
}
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;
}
}