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/*
* Copyright (C) 2014 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.systemui.media;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.graphics.Typeface;
import android.media.projection.MediaProjectionManager;
import android.media.projection.IMediaProjectionManager;
import android.media.projection.IMediaProjection;
import android.os.Bundle;
import android.os.IBinder;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.text.BidiFormatter;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.TextPaint;
import android.text.TextUtils;
import android.text.style.StyleSpan;
import android.util.Log;
import android.util.TypedValue;
import android.view.WindowManager;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import com.android.systemui.R;
public class MediaProjectionPermissionActivity extends Activity
implements DialogInterface.OnClickListener, CheckBox.OnCheckedChangeListener,
DialogInterface.OnCancelListener {
private static final String TAG = "MediaProjectionPermissionActivity";
private static final float MAX_APP_NAME_SIZE_PX = 500f;
private static final String ELLIPSIS = "\u2026";
private boolean mPermanentGrant;
private String mPackageName;
private int mUid;
private IMediaProjectionManager mService;
private AlertDialog mDialog;
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
mPackageName = getCallingPackage();
IBinder b = ServiceManager.getService(MEDIA_PROJECTION_SERVICE);
mService = IMediaProjectionManager.Stub.asInterface(b);
if (mPackageName == null) {
finish();
return;
}
PackageManager packageManager = getPackageManager();
ApplicationInfo aInfo;
try {
aInfo = packageManager.getApplicationInfo(mPackageName, 0);
mUid = aInfo.uid;
} catch (PackageManager.NameNotFoundException e) {
Log.e(TAG, "unable to look up package name", e);
finish();
return;
}
try {
if (mService.hasProjectionPermission(mUid, mPackageName)) {
setResult(RESULT_OK, getMediaProjectionIntent(mUid, mPackageName,
false /*permanentGrant*/));
finish();
return;
}
} catch (RemoteException e) {
Log.e(TAG, "Error checking projection permissions", e);
finish();
return;
}
TextPaint paint = new TextPaint();
paint.setTextSize(42);
String label = aInfo.loadLabel(packageManager).toString();
// If the label contains new line characters it may push the security
// message below the fold of the dialog. Labels shouldn't have new line
// characters anyways, so just truncate the message the first time one
// is seen.
final int labelLength = label.length();
int offset = 0;
while (offset < labelLength) {
final int codePoint = label.codePointAt(offset);
final int type = Character.getType(codePoint);
if (type == Character.LINE_SEPARATOR
|| type == Character.CONTROL
|| type == Character.PARAGRAPH_SEPARATOR) {
label = label.substring(0, offset) + ELLIPSIS;
break;
}
offset += Character.charCount(codePoint);
}
if (label.isEmpty()) {
label = mPackageName;
}
String unsanitizedAppName = TextUtils.ellipsize(label,
paint, MAX_APP_NAME_SIZE_PX, TextUtils.TruncateAt.END).toString();
String appName = BidiFormatter.getInstance().unicodeWrap(unsanitizedAppName);
String actionText = getString(R.string.media_projection_dialog_text, appName);
SpannableString message = new SpannableString(actionText);
int appNameIndex = actionText.indexOf(appName);
if (appNameIndex >= 0) {
message.setSpan(new StyleSpan(Typeface.BOLD),
appNameIndex, appNameIndex + appName.length(), 0);
}
mDialog = new AlertDialog.Builder(this)
.setIcon(aInfo.loadIcon(packageManager))
.setMessage(message)
.setPositiveButton(R.string.media_projection_action_text, this)
.setNegativeButton(android.R.string.cancel, this)
.setView(R.layout.remember_permission_checkbox)
.setOnCancelListener(this)
.create();
mDialog.create();
mDialog.getButton(DialogInterface.BUTTON_POSITIVE).setFilterTouchesWhenObscured(true);
((CheckBox) mDialog.findViewById(R.id.remember)).setOnCheckedChangeListener(this);
mDialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);
mDialog.show();
}
@Override
protected void onDestroy() {
super.onDestroy();
if (mDialog != null) {
mDialog.dismiss();
}
}
@Override
public void onClick(DialogInterface dialog, int which) {
try {
if (which == AlertDialog.BUTTON_POSITIVE) {
setResult(RESULT_OK, getMediaProjectionIntent(
mUid, mPackageName, mPermanentGrant));
}
} catch (RemoteException e) {
Log.e(TAG, "Error granting projection permission", e);
setResult(RESULT_CANCELED);
} finally {
if (mDialog != null) {
mDialog.dismiss();
}
finish();
}
}
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
mPermanentGrant = isChecked;
}
private Intent getMediaProjectionIntent(int uid, String packageName, boolean permanentGrant)
throws RemoteException {
IMediaProjection projection = mService.createProjection(uid, packageName,
MediaProjectionManager.TYPE_SCREEN_CAPTURE, permanentGrant);
Intent intent = new Intent();
intent.putExtra(MediaProjectionManager.EXTRA_MEDIA_PROJECTION, projection.asBinder());
return intent;
}
@Override
public void onCancel(DialogInterface dialog) {
finish();
}
}
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