1package eu.siacs.conversations.ui;
   2
   3import android.Manifest;
   4import android.annotation.SuppressLint;
   5import android.annotation.TargetApi;
   6import android.app.ActionBar;
   7import android.app.Activity;
   8import android.app.AlertDialog;
   9import android.app.AlertDialog.Builder;
  10import android.app.PendingIntent;
  11import android.content.ActivityNotFoundException;
  12import android.content.ClipData;
  13import android.content.ClipboardManager;
  14import android.content.ComponentName;
  15import android.content.Context;
  16import android.content.DialogInterface;
  17import android.content.DialogInterface.OnClickListener;
  18import android.content.Intent;
  19import android.content.IntentSender.SendIntentException;
  20import android.content.ServiceConnection;
  21import android.content.SharedPreferences;
  22import android.content.pm.PackageManager;
  23import android.content.pm.ResolveInfo;
  24import android.content.res.Resources;
  25import android.content.res.TypedArray;
  26import android.graphics.Bitmap;
  27import android.graphics.Color;
  28import android.graphics.Point;
  29import android.graphics.drawable.BitmapDrawable;
  30import android.graphics.drawable.Drawable;
  31import android.net.ConnectivityManager;
  32import android.net.Uri;
  33import android.nfc.NdefMessage;
  34import android.nfc.NdefRecord;
  35import android.nfc.NfcAdapter;
  36import android.nfc.NfcEvent;
  37import android.os.AsyncTask;
  38import android.os.Build;
  39import android.os.Bundle;
  40import android.os.Handler;
  41import android.os.IBinder;
  42import android.os.PowerManager;
  43import android.os.SystemClock;
  44import android.preference.PreferenceManager;
  45import android.text.InputType;
  46import android.util.DisplayMetrics;
  47import android.util.Pair;
  48import android.view.MenuItem;
  49import android.view.View;
  50import android.view.inputmethod.InputMethodManager;
  51import android.widget.EditText;
  52import android.widget.ImageView;
  53import android.widget.Toast;
  54
  55import com.google.zxing.BarcodeFormat;
  56import com.google.zxing.EncodeHintType;
  57import com.google.zxing.aztec.AztecWriter;
  58import com.google.zxing.common.BitMatrix;
  59
  60import net.java.otr4j.session.SessionID;
  61
  62import java.io.FileNotFoundException;
  63import java.lang.ref.WeakReference;
  64import java.util.ArrayList;
  65import java.util.Collections;
  66import java.util.Hashtable;
  67import java.util.List;
  68import java.util.Map;
  69import java.util.concurrent.RejectedExecutionException;
  70import java.util.concurrent.atomic.AtomicInteger;
  71
  72import eu.siacs.conversations.Config;
  73import eu.siacs.conversations.R;
  74import eu.siacs.conversations.entities.Account;
  75import eu.siacs.conversations.entities.Contact;
  76import eu.siacs.conversations.entities.Conversation;
  77import eu.siacs.conversations.entities.Message;
  78import eu.siacs.conversations.entities.MucOptions;
  79import eu.siacs.conversations.entities.Presences;
  80import eu.siacs.conversations.services.AvatarService;
  81import eu.siacs.conversations.services.BarcodeProvider;
  82import eu.siacs.conversations.services.XmppConnectionService;
  83import eu.siacs.conversations.services.XmppConnectionService.XmppConnectionBinder;
  84import eu.siacs.conversations.utils.CryptoHelper;
  85import eu.siacs.conversations.utils.ExceptionHelper;
  86import eu.siacs.conversations.utils.UIHelper;
  87import eu.siacs.conversations.xmpp.OnKeyStatusUpdated;
  88import eu.siacs.conversations.xmpp.OnUpdateBlocklist;
  89import eu.siacs.conversations.xmpp.jid.InvalidJidException;
  90import eu.siacs.conversations.xmpp.jid.Jid;
  91
  92public abstract class XmppActivity extends Activity {
  93
  94	protected static final int REQUEST_ANNOUNCE_PGP = 0x0101;
  95	protected static final int REQUEST_INVITE_TO_CONVERSATION = 0x0102;
  96	protected static final int REQUEST_CHOOSE_PGP_ID = 0x0103;
  97	protected static final int REQUEST_BATTERY_OP = 0x13849ff;
  98
  99	public static final String EXTRA_ACCOUNT = "account";
 100
 101	public XmppConnectionService xmppConnectionService;
 102	public boolean xmppConnectionServiceBound = false;
 103	protected boolean registeredListeners = false;
 104
 105	protected int mPrimaryTextColor;
 106	protected int mSecondaryTextColor;
 107	protected int mTertiaryTextColor;
 108	protected int mPrimaryBackgroundColor;
 109	protected int mSecondaryBackgroundColor;
 110	protected int mColorRed;
 111	protected int mColorOrange;
 112	protected int mColorGreen;
 113	protected int mPrimaryColor;
 114
 115	protected boolean mUseSubject = true;
 116
 117	private DisplayMetrics metrics;
 118	protected int mTheme;
 119	protected boolean mUsingEnterKey = false;
 120
 121	protected Toast mToast;
 122
 123	protected void hideToast() {
 124		if (mToast != null) {
 125			mToast.cancel();
 126		}
 127	}
 128
 129	protected void replaceToast(String msg) {
 130		replaceToast(msg, true);
 131	}
 132
 133	protected void replaceToast(String msg, boolean showlong) {
 134		hideToast();
 135		mToast = Toast.makeText(this, msg ,showlong ? Toast.LENGTH_LONG : Toast.LENGTH_SHORT);
 136		mToast.show();
 137	}
 138
 139	protected Runnable onOpenPGPKeyPublished = new Runnable() {
 140		@Override
 141		public void run() {
 142			Toast.makeText(XmppActivity.this,R.string.openpgp_has_been_published, Toast.LENGTH_SHORT).show();
 143		}
 144	};
 145
 146	private long mLastUiRefresh = 0;
 147	private Handler mRefreshUiHandler = new Handler();
 148	private Runnable mRefreshUiRunnable = new Runnable() {
 149		@Override
 150		public void run() {
 151			mLastUiRefresh = SystemClock.elapsedRealtime();
 152			refreshUiReal();
 153		}
 154	};
 155
 156	protected ConferenceInvite mPendingConferenceInvite = null;
 157
 158
 159	protected final void refreshUi() {
 160		final long diff = SystemClock.elapsedRealtime() - mLastUiRefresh;
 161		if (diff > Config.REFRESH_UI_INTERVAL) {
 162			mRefreshUiHandler.removeCallbacks(mRefreshUiRunnable);
 163			runOnUiThread(mRefreshUiRunnable);
 164		} else {
 165			final long next = Config.REFRESH_UI_INTERVAL - diff;
 166			mRefreshUiHandler.removeCallbacks(mRefreshUiRunnable);
 167			mRefreshUiHandler.postDelayed(mRefreshUiRunnable,next);
 168		}
 169	}
 170
 171	abstract protected void refreshUiReal();
 172
 173	protected interface OnValueEdited {
 174		public void onValueEdited(String value);
 175	}
 176
 177	public interface OnPresenceSelected {
 178		public void onPresenceSelected();
 179	}
 180
 181	protected ServiceConnection mConnection = new ServiceConnection() {
 182
 183		@Override
 184		public void onServiceConnected(ComponentName className, IBinder service) {
 185			XmppConnectionBinder binder = (XmppConnectionBinder) service;
 186			xmppConnectionService = binder.getService();
 187			xmppConnectionServiceBound = true;
 188			if (!registeredListeners && shouldRegisterListeners()) {
 189				registerListeners();
 190				registeredListeners = true;
 191			}
 192			onBackendConnected();
 193		}
 194
 195		@Override
 196		public void onServiceDisconnected(ComponentName arg0) {
 197			xmppConnectionServiceBound = false;
 198		}
 199	};
 200
 201	@Override
 202	protected void onStart() {
 203		super.onStart();
 204		if (!xmppConnectionServiceBound) {
 205			connectToBackend();
 206		} else {
 207			if (!registeredListeners) {
 208				this.registerListeners();
 209				this.registeredListeners = true;
 210			}
 211			this.onBackendConnected();
 212		}
 213	}
 214
 215	@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
 216	protected boolean shouldRegisterListeners() {
 217		if  (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
 218			return !isDestroyed() && !isFinishing();
 219		} else {
 220			return !isFinishing();
 221		}
 222	}
 223
 224	public void connectToBackend() {
 225		Intent intent = new Intent(this, XmppConnectionService.class);
 226		intent.setAction("ui");
 227		startService(intent);
 228		bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
 229	}
 230
 231	@Override
 232	protected void onStop() {
 233		super.onStop();
 234		if (xmppConnectionServiceBound) {
 235			if (registeredListeners) {
 236				this.unregisterListeners();
 237				this.registeredListeners = false;
 238			}
 239			unbindService(mConnection);
 240			xmppConnectionServiceBound = false;
 241		}
 242	}
 243
 244	protected void hideKeyboard() {
 245		InputMethodManager inputManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
 246
 247		View focus = getCurrentFocus();
 248
 249		if (focus != null) {
 250
 251			inputManager.hideSoftInputFromWindow(focus.getWindowToken(),
 252					InputMethodManager.HIDE_NOT_ALWAYS);
 253		}
 254	}
 255
 256	public boolean hasPgp() {
 257		return xmppConnectionService.getPgpEngine() != null;
 258	}
 259
 260	public void showInstallPgpDialog() {
 261		Builder builder = new AlertDialog.Builder(this);
 262		builder.setTitle(getString(R.string.openkeychain_required));
 263		builder.setIconAttribute(android.R.attr.alertDialogIcon);
 264		builder.setMessage(getText(R.string.openkeychain_required_long));
 265		builder.setNegativeButton(getString(R.string.cancel), null);
 266		builder.setNeutralButton(getString(R.string.restart),
 267				new OnClickListener() {
 268
 269					@Override
 270					public void onClick(DialogInterface dialog, int which) {
 271						if (xmppConnectionServiceBound) {
 272							unbindService(mConnection);
 273							xmppConnectionServiceBound = false;
 274						}
 275						stopService(new Intent(XmppActivity.this,
 276									XmppConnectionService.class));
 277						finish();
 278					}
 279				});
 280		builder.setPositiveButton(getString(R.string.install),
 281				new OnClickListener() {
 282
 283					@Override
 284					public void onClick(DialogInterface dialog, int which) {
 285						Uri uri = Uri
 286							.parse("market://details?id=org.sufficientlysecure.keychain");
 287						Intent marketIntent = new Intent(Intent.ACTION_VIEW,
 288								uri);
 289						PackageManager manager = getApplicationContext()
 290							.getPackageManager();
 291						List<ResolveInfo> infos = manager
 292							.queryIntentActivities(marketIntent, 0);
 293						if (infos.size() > 0) {
 294							startActivity(marketIntent);
 295						} else {
 296							uri = Uri.parse("http://www.openkeychain.org/");
 297							Intent browserIntent = new Intent(
 298									Intent.ACTION_VIEW, uri);
 299							startActivity(browserIntent);
 300						}
 301						finish();
 302					}
 303				});
 304		builder.create().show();
 305	}
 306
 307	abstract void onBackendConnected();
 308
 309	protected void registerListeners() {
 310		if (this instanceof XmppConnectionService.OnConversationUpdate) {
 311			this.xmppConnectionService.setOnConversationListChangedListener((XmppConnectionService.OnConversationUpdate) this);
 312		}
 313		if (this instanceof XmppConnectionService.OnAccountUpdate) {
 314			this.xmppConnectionService.setOnAccountListChangedListener((XmppConnectionService.OnAccountUpdate) this);
 315		}
 316		if (this instanceof XmppConnectionService.OnCaptchaRequested) {
 317			this.xmppConnectionService.setOnCaptchaRequestedListener((XmppConnectionService.OnCaptchaRequested) this);
 318		}
 319		if (this instanceof XmppConnectionService.OnRosterUpdate) {
 320			this.xmppConnectionService.setOnRosterUpdateListener((XmppConnectionService.OnRosterUpdate) this);
 321		}
 322		if (this instanceof XmppConnectionService.OnMucRosterUpdate) {
 323			this.xmppConnectionService.setOnMucRosterUpdateListener((XmppConnectionService.OnMucRosterUpdate) this);
 324		}
 325		if (this instanceof OnUpdateBlocklist) {
 326			this.xmppConnectionService.setOnUpdateBlocklistListener((OnUpdateBlocklist) this);
 327		}
 328		if (this instanceof XmppConnectionService.OnShowErrorToast) {
 329			this.xmppConnectionService.setOnShowErrorToastListener((XmppConnectionService.OnShowErrorToast) this);
 330		}
 331		if (this instanceof OnKeyStatusUpdated) {
 332			this.xmppConnectionService.setOnKeyStatusUpdatedListener((OnKeyStatusUpdated) this);
 333		}
 334	}
 335
 336	protected void unregisterListeners() {
 337		if (this instanceof XmppConnectionService.OnConversationUpdate) {
 338			this.xmppConnectionService.removeOnConversationListChangedListener();
 339		}
 340		if (this instanceof XmppConnectionService.OnAccountUpdate) {
 341			this.xmppConnectionService.removeOnAccountListChangedListener();
 342		}
 343		if (this instanceof XmppConnectionService.OnCaptchaRequested) {
 344			this.xmppConnectionService.removeOnCaptchaRequestedListener();
 345		}
 346		if (this instanceof XmppConnectionService.OnRosterUpdate) {
 347			this.xmppConnectionService.removeOnRosterUpdateListener();
 348		}
 349		if (this instanceof XmppConnectionService.OnMucRosterUpdate) {
 350			this.xmppConnectionService.removeOnMucRosterUpdateListener();
 351		}
 352		if (this instanceof OnUpdateBlocklist) {
 353			this.xmppConnectionService.removeOnUpdateBlocklistListener();
 354		}
 355		if (this instanceof XmppConnectionService.OnShowErrorToast) {
 356			this.xmppConnectionService.removeOnShowErrorToastListener();
 357		}
 358		if (this instanceof OnKeyStatusUpdated) {
 359			this.xmppConnectionService.removeOnNewKeysAvailableListener();
 360		}
 361	}
 362
 363	@Override
 364	public boolean onOptionsItemSelected(final MenuItem item) {
 365		switch (item.getItemId()) {
 366			case R.id.action_settings:
 367				startActivity(new Intent(this, SettingsActivity.class));
 368				break;
 369			case R.id.action_accounts:
 370				startActivity(new Intent(this, ManageAccountActivity.class));
 371				break;
 372			case android.R.id.home:
 373				finish();
 374				break;
 375			case R.id.action_show_qr_code:
 376				showQrCode();
 377				break;
 378		}
 379		return super.onOptionsItemSelected(item);
 380	}
 381
 382	@Override
 383	protected void onCreate(Bundle savedInstanceState) {
 384		super.onCreate(savedInstanceState);
 385		metrics = getResources().getDisplayMetrics();
 386		ExceptionHelper.init(getApplicationContext());
 387
 388		mPrimaryTextColor = getResources().getColor(R.color.black87);
 389		mSecondaryTextColor = getResources().getColor(R.color.black54);
 390		mTertiaryTextColor = getResources().getColor(R.color.black12);
 391		mColorRed = getResources().getColor(R.color.red800);
 392		mColorOrange = getResources().getColor(R.color.orange500);
 393		mColorGreen = getResources().getColor(R.color.green500);
 394		mPrimaryColor = getResources().getColor(R.color.primary500);
 395		mPrimaryBackgroundColor = getResources().getColor(R.color.grey50);
 396		mSecondaryBackgroundColor = getResources().getColor(R.color.grey200);
 397
 398		if(isDarkTheme()) {
 399			mPrimaryTextColor = getResources().getColor(R.color.white);
 400			mSecondaryTextColor = getResources().getColor(R.color.white70);
 401			mTertiaryTextColor = getResources().getColor(R.color.white12);
 402			mPrimaryBackgroundColor = getResources().getColor(R.color.grey800);
 403			mSecondaryBackgroundColor = getResources().getColor(R.color.grey900);
 404		}
 405
 406		this.mTheme = findTheme();
 407		setTheme(this.mTheme);
 408
 409		this.mUsingEnterKey = usingEnterKey();
 410		mUseSubject = getPreferences().getBoolean("use_subject", true);
 411		final ActionBar ab = getActionBar();
 412		if (ab!=null) {
 413			ab.setDisplayHomeAsUpEnabled(true);
 414		}
 415	}
 416
 417	public boolean isDarkTheme() {
 418		return getPreferences().getString("theme", "light").equals("dark");
 419	}
 420
 421	public int getThemeResource(int r_attr_name, int r_drawable_def) {
 422		int[] attrs = {	r_attr_name };
 423		TypedArray ta = this.getTheme().obtainStyledAttributes(attrs);
 424
 425		int res = ta.getResourceId(0, r_drawable_def);
 426		ta.recycle();
 427
 428		return res;
 429	}
 430
 431	protected boolean isOptimizingBattery() {
 432		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 433			PowerManager pm = (PowerManager) getSystemService(POWER_SERVICE);
 434			return !pm.isIgnoringBatteryOptimizations(getPackageName());
 435		} else {
 436			return false;
 437		}
 438	}
 439
 440	protected boolean isAffectedByDataSaver() {
 441		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
 442			ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
 443			return cm.isActiveNetworkMetered()
 444					&& cm.getRestrictBackgroundStatus() == ConnectivityManager.RESTRICT_BACKGROUND_STATUS_ENABLED;
 445		} else {
 446			return false;
 447		}
 448	}
 449
 450	protected boolean usingEnterKey() {
 451		return getPreferences().getBoolean("display_enter_key", false);
 452	}
 453
 454	protected SharedPreferences getPreferences() {
 455		return PreferenceManager
 456			.getDefaultSharedPreferences(getApplicationContext());
 457	}
 458
 459	public boolean useSubjectToIdentifyConference() {
 460		return mUseSubject;
 461	}
 462
 463	public void switchToConversation(Conversation conversation) {
 464		switchToConversation(conversation, null, false);
 465	}
 466
 467	public void switchToConversation(Conversation conversation, String text,
 468			boolean newTask) {
 469		switchToConversation(conversation,text,null,false,newTask);
 470	}
 471
 472	public void highlightInMuc(Conversation conversation, String nick) {
 473		switchToConversation(conversation, null, nick, false, false);
 474	}
 475
 476	public void privateMsgInMuc(Conversation conversation, String nick) {
 477		switchToConversation(conversation, null, nick, true, false);
 478	}
 479
 480	private void switchToConversation(Conversation conversation, String text, String nick, boolean pm, boolean newTask) {
 481		Intent viewConversationIntent = new Intent(this,
 482				ConversationActivity.class);
 483		viewConversationIntent.setAction(ConversationActivity.ACTION_VIEW_CONVERSATION);
 484		viewConversationIntent.putExtra(ConversationActivity.CONVERSATION,
 485				conversation.getUuid());
 486		if (text != null) {
 487			viewConversationIntent.putExtra(ConversationActivity.TEXT, text);
 488		}
 489		if (nick != null) {
 490			viewConversationIntent.putExtra(ConversationActivity.NICK, nick);
 491			viewConversationIntent.putExtra(ConversationActivity.PRIVATE_MESSAGE,pm);
 492		}
 493		if (newTask) {
 494			viewConversationIntent.setFlags(viewConversationIntent.getFlags()
 495					| Intent.FLAG_ACTIVITY_NEW_TASK
 496					| Intent.FLAG_ACTIVITY_SINGLE_TOP);
 497		} else {
 498			viewConversationIntent.setFlags(viewConversationIntent.getFlags()
 499					| Intent.FLAG_ACTIVITY_CLEAR_TOP);
 500		}
 501		startActivity(viewConversationIntent);
 502		finish();
 503	}
 504
 505	public void switchToContactDetails(Contact contact) {
 506		switchToContactDetails(contact, null);
 507	}
 508
 509	public void switchToContactDetails(Contact contact, String messageFingerprint) {
 510		Intent intent = new Intent(this, ContactDetailsActivity.class);
 511		intent.setAction(ContactDetailsActivity.ACTION_VIEW_CONTACT);
 512		intent.putExtra(EXTRA_ACCOUNT, contact.getAccount().getJid().toBareJid().toString());
 513		intent.putExtra("contact", contact.getJid().toString());
 514		intent.putExtra("fingerprint", messageFingerprint);
 515		startActivity(intent);
 516	}
 517
 518	public void switchToAccount(Account account) {
 519		switchToAccount(account, false);
 520	}
 521
 522	public void switchToAccount(Account account, boolean init) {
 523		Intent intent = new Intent(this, EditAccountActivity.class);
 524		intent.putExtra("jid", account.getJid().toBareJid().toString());
 525		intent.putExtra("init", init);
 526		startActivity(intent);
 527	}
 528
 529	protected void inviteToConversation(Conversation conversation) {
 530		Intent intent = new Intent(getApplicationContext(),
 531				ChooseContactActivity.class);
 532		List<String> contacts = new ArrayList<>();
 533		if (conversation.getMode() == Conversation.MODE_MULTI) {
 534			for (MucOptions.User user : conversation.getMucOptions().getUsers(false)) {
 535				Jid jid = user.getRealJid();
 536				if (jid != null) {
 537					contacts.add(jid.toBareJid().toString());
 538				}
 539			}
 540		} else {
 541			contacts.add(conversation.getJid().toBareJid().toString());
 542		}
 543		intent.putExtra("filter_contacts", contacts.toArray(new String[contacts.size()]));
 544		intent.putExtra("conversation", conversation.getUuid());
 545		intent.putExtra("multiple", true);
 546		intent.putExtra("show_enter_jid", true);
 547		intent.putExtra(EXTRA_ACCOUNT, conversation.getAccount().getJid().toBareJid().toString());
 548		startActivityForResult(intent, REQUEST_INVITE_TO_CONVERSATION);
 549	}
 550
 551	protected void announcePgp(Account account, final Conversation conversation, final Runnable onSuccess) {
 552		if (account.getPgpId() == 0) {
 553			choosePgpSignId(account);
 554		} else {
 555			String status = null;
 556			if (manuallyChangePresence()) {
 557				status = account.getPresenceStatusMessage();
 558			}
 559			if (status == null) {
 560				status = "";
 561			}
 562			xmppConnectionService.getPgpEngine().generateSignature(account, status, new UiCallback<Account>() {
 563
 564				@Override
 565				public void userInputRequried(PendingIntent pi, Account account) {
 566					try {
 567						startIntentSenderForResult(pi.getIntentSender(), REQUEST_ANNOUNCE_PGP, null, 0, 0, 0);
 568					} catch (final SendIntentException ignored) {
 569					}
 570				}
 571
 572				@Override
 573				public void success(Account account) {
 574					xmppConnectionService.databaseBackend.updateAccount(account);
 575					xmppConnectionService.sendPresence(account);
 576					if (conversation != null) {
 577						conversation.setNextEncryption(Message.ENCRYPTION_PGP);
 578						xmppConnectionService.updateConversation(conversation);
 579						refreshUi();
 580					}
 581					if (onSuccess != null) {
 582						runOnUiThread(onSuccess);
 583					}
 584				}
 585
 586				@Override
 587				public void error(int error, Account account) {
 588					if (error == 0 && account != null) {
 589						account.setPgpSignId(0);
 590						account.unsetPgpSignature();
 591						xmppConnectionService.databaseBackend.updateAccount(account);
 592						choosePgpSignId(account);
 593					} else {
 594						displayErrorDialog(error);
 595					}
 596				}
 597			});
 598		}
 599	}
 600
 601	protected  boolean noAccountUsesPgp() {
 602		if (!hasPgp()) {
 603			return true;
 604		}
 605		for(Account account : xmppConnectionService.getAccounts()) {
 606			if (account.getPgpId() != 0) {
 607				return false;
 608			}
 609		}
 610		return true;
 611	}
 612
 613	@SuppressWarnings("deprecation")
 614	@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
 615	protected void setListItemBackgroundOnView(View view) {
 616		int sdk = android.os.Build.VERSION.SDK_INT;
 617		if (sdk < android.os.Build.VERSION_CODES.JELLY_BEAN) {
 618			view.setBackgroundDrawable(getResources().getDrawable(R.drawable.greybackground));
 619		} else {
 620			view.setBackground(getResources().getDrawable(R.drawable.greybackground));
 621		}
 622	}
 623
 624	protected void choosePgpSignId(Account account) {
 625		xmppConnectionService.getPgpEngine().chooseKey(account, new UiCallback<Account>() {
 626			@Override
 627			public void success(Account account1) {
 628			}
 629
 630			@Override
 631			public void error(int errorCode, Account object) {
 632
 633			}
 634
 635			@Override
 636			public void userInputRequried(PendingIntent pi, Account object) {
 637				try {
 638					startIntentSenderForResult(pi.getIntentSender(),
 639							REQUEST_CHOOSE_PGP_ID, null, 0, 0, 0);
 640				} catch (final SendIntentException ignored) {
 641				}
 642			}
 643		});
 644	}
 645
 646	protected void displayErrorDialog(final int errorCode) {
 647		runOnUiThread(new Runnable() {
 648
 649			@Override
 650			public void run() {
 651				AlertDialog.Builder builder = new AlertDialog.Builder(
 652						XmppActivity.this);
 653				builder.setIconAttribute(android.R.attr.alertDialogIcon);
 654				builder.setTitle(getString(R.string.error));
 655				builder.setMessage(errorCode);
 656				builder.setNeutralButton(R.string.accept, null);
 657				builder.create().show();
 658			}
 659		});
 660
 661	}
 662
 663	protected void showAddToRosterDialog(final Conversation conversation) {
 664		showAddToRosterDialog(conversation.getContact());
 665	}
 666
 667	protected void showAddToRosterDialog(final Contact contact) {
 668		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 669		builder.setTitle(contact.getJid().toString());
 670		builder.setMessage(getString(R.string.not_in_roster));
 671		builder.setNegativeButton(getString(R.string.cancel), null);
 672		builder.setPositiveButton(getString(R.string.add_contact),
 673				new DialogInterface.OnClickListener() {
 674
 675					@Override
 676					public void onClick(DialogInterface dialog, int which) {
 677						final Jid jid = contact.getJid();
 678						Account account = contact.getAccount();
 679						Contact contact = account.getRoster().getContact(jid);
 680						xmppConnectionService.createContact(contact);
 681					}
 682				});
 683		builder.create().show();
 684	}
 685
 686	private void showAskForPresenceDialog(final Contact contact) {
 687		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 688		builder.setTitle(contact.getJid().toString());
 689		builder.setMessage(R.string.request_presence_updates);
 690		builder.setNegativeButton(R.string.cancel, null);
 691		builder.setPositiveButton(R.string.request_now,
 692				new DialogInterface.OnClickListener() {
 693
 694					@Override
 695					public void onClick(DialogInterface dialog, int which) {
 696						if (xmppConnectionServiceBound) {
 697							xmppConnectionService.sendPresencePacket(contact
 698									.getAccount(), xmppConnectionService
 699									.getPresenceGenerator()
 700									.requestPresenceUpdatesFrom(contact));
 701						}
 702					}
 703				});
 704		builder.create().show();
 705	}
 706
 707	private void warnMutalPresenceSubscription(final Conversation conversation,
 708			final OnPresenceSelected listener) {
 709		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 710		builder.setTitle(conversation.getContact().getJid().toString());
 711		builder.setMessage(R.string.without_mutual_presence_updates);
 712		builder.setNegativeButton(R.string.cancel, null);
 713		builder.setPositiveButton(R.string.ignore, new OnClickListener() {
 714
 715			@Override
 716			public void onClick(DialogInterface dialog, int which) {
 717				conversation.setNextCounterpart(null);
 718				if (listener != null) {
 719					listener.onPresenceSelected();
 720				}
 721			}
 722		});
 723		builder.create().show();
 724	}
 725
 726	protected void quickEdit(String previousValue, int hint, OnValueEdited callback) {
 727		quickEdit(previousValue, callback, hint, false);
 728	}
 729
 730	protected void quickPasswordEdit(String previousValue, OnValueEdited callback) {
 731		quickEdit(previousValue, callback, R.string.password, true);
 732	}
 733
 734	@SuppressLint("InflateParams")
 735	private void quickEdit(final String previousValue,
 736						   final OnValueEdited callback,
 737						   final int hint,
 738						   boolean password) {
 739		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 740		View view = getLayoutInflater().inflate(R.layout.quickedit, null);
 741		final EditText editor = (EditText) view.findViewById(R.id.editor);
 742		OnClickListener mClickListener = new OnClickListener() {
 743
 744			@Override
 745			public void onClick(DialogInterface dialog, int which) {
 746				String value = editor.getText().toString();
 747				if (!value.equals(previousValue) && value.trim().length() > 0) {
 748					callback.onValueEdited(value);
 749				}
 750			}
 751		};
 752		if (password) {
 753			editor.setInputType(InputType.TYPE_CLASS_TEXT
 754					| InputType.TYPE_TEXT_VARIATION_PASSWORD);
 755			builder.setPositiveButton(R.string.accept, mClickListener);
 756		} else {
 757			builder.setPositiveButton(R.string.edit, mClickListener);
 758		}
 759		if (hint != 0) {
 760			editor.setHint(hint);
 761		}
 762		editor.requestFocus();
 763		editor.setText("");
 764		if (previousValue != null) {
 765			editor.getText().append(previousValue);
 766		}
 767		builder.setView(view);
 768		builder.setNegativeButton(R.string.cancel, null);
 769		builder.create().show();
 770	}
 771
 772	public boolean hasStoragePermission(int requestCode) {
 773		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 774			if (checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
 775				requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, requestCode);
 776				return false;
 777			} else {
 778				return true;
 779			}
 780		} else {
 781			return true;
 782		}
 783	}
 784
 785	public void selectPresence(final Conversation conversation,
 786			final OnPresenceSelected listener) {
 787		final Contact contact = conversation.getContact();
 788		if (conversation.hasValidOtrSession()) {
 789			SessionID id = conversation.getOtrSession().getSessionID();
 790			Jid jid;
 791			try {
 792				jid = Jid.fromString(id.getAccountID() + "/" + id.getUserID());
 793			} catch (InvalidJidException e) {
 794				jid = null;
 795			}
 796			conversation.setNextCounterpart(jid);
 797			listener.onPresenceSelected();
 798		} else 	if (!contact.showInRoster()) {
 799			showAddToRosterDialog(conversation);
 800		} else {
 801			final Presences presences = contact.getPresences();
 802			if (presences.size() == 0) {
 803				if (!contact.getOption(Contact.Options.TO)
 804						&& !contact.getOption(Contact.Options.ASKING)
 805						&& contact.getAccount().getStatus() == Account.State.ONLINE) {
 806					showAskForPresenceDialog(contact);
 807				} else if (!contact.getOption(Contact.Options.TO)
 808						|| !contact.getOption(Contact.Options.FROM)) {
 809					warnMutalPresenceSubscription(conversation, listener);
 810				} else {
 811					conversation.setNextCounterpart(null);
 812					listener.onPresenceSelected();
 813				}
 814			} else if (presences.size() == 1) {
 815				String presence = presences.toResourceArray()[0];
 816				try {
 817					conversation.setNextCounterpart(Jid.fromParts(contact.getJid().getLocalpart(),contact.getJid().getDomainpart(),presence));
 818				} catch (InvalidJidException e) {
 819					conversation.setNextCounterpart(null);
 820				}
 821				listener.onPresenceSelected();
 822			} else {
 823				showPresenceSelectionDialog(presences,conversation,listener);
 824			}
 825		}
 826	}
 827
 828	private void showPresenceSelectionDialog(Presences presences, final Conversation conversation, final OnPresenceSelected listener) {
 829		final Contact contact = conversation.getContact();
 830		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 831		builder.setTitle(getString(R.string.choose_presence));
 832		final String[] resourceArray = presences.toResourceArray();
 833		Pair<Map<String, String>, Map<String, String>> typeAndName = presences.toTypeAndNameMap();
 834		final Map<String,String> resourceTypeMap = typeAndName.first;
 835		final Map<String,String> resourceNameMap = typeAndName.second;
 836		final String[] readableIdentities = new String[resourceArray.length];
 837		final AtomicInteger selectedResource = new AtomicInteger(0);
 838		for (int i = 0; i < resourceArray.length; ++i) {
 839			String resource = resourceArray[i];
 840			if (resource.equals(contact.getLastResource())) {
 841				selectedResource.set(i);
 842			}
 843			String type = resourceTypeMap.get(resource);
 844			String name = resourceNameMap.get(resource);
 845			if (type != null) {
 846				if (Collections.frequency(resourceTypeMap.values(),type) == 1) {
 847					readableIdentities[i] = UIHelper.tranlasteType(this,type);
 848				} else if (name != null) {
 849					if (Collections.frequency(resourceNameMap.values(), name) == 1
 850							|| CryptoHelper.UUID_PATTERN.matcher(resource).matches()) {
 851						readableIdentities[i] = UIHelper.tranlasteType(this,type) + "  (" + name+")";
 852					} else {
 853						readableIdentities[i] = UIHelper.tranlasteType(this,type) + " (" + name +" / " + resource+")";
 854					}
 855				} else {
 856					readableIdentities[i] = UIHelper.tranlasteType(this,type) + " (" + resource+")";
 857				}
 858			} else {
 859				readableIdentities[i] = resource;
 860			}
 861		}
 862		builder.setSingleChoiceItems(readableIdentities,
 863				selectedResource.get(),
 864				new DialogInterface.OnClickListener() {
 865
 866					@Override
 867					public void onClick(DialogInterface dialog, int which) {
 868						selectedResource.set(which);
 869					}
 870				});
 871		builder.setNegativeButton(R.string.cancel, null);
 872		builder.setPositiveButton(R.string.ok, new OnClickListener() {
 873
 874			@Override
 875			public void onClick(DialogInterface dialog, int which) {
 876				try {
 877					Jid next = Jid.fromParts(contact.getJid().getLocalpart(),contact.getJid().getDomainpart(),resourceArray[selectedResource.get()]);
 878					conversation.setNextCounterpart(next);
 879				} catch (InvalidJidException e) {
 880					conversation.setNextCounterpart(null);
 881				}
 882				listener.onPresenceSelected();
 883			}
 884		});
 885		builder.create().show();
 886	}
 887
 888	protected void onActivityResult(int requestCode, int resultCode, final Intent data) {
 889		super.onActivityResult(requestCode, resultCode, data);
 890		if (requestCode == REQUEST_INVITE_TO_CONVERSATION && resultCode == RESULT_OK) {
 891			mPendingConferenceInvite = ConferenceInvite.parse(data);
 892			if (xmppConnectionServiceBound && mPendingConferenceInvite != null) {
 893				if (mPendingConferenceInvite.execute(this)) {
 894					mToast = Toast.makeText(this, R.string.creating_conference, Toast.LENGTH_LONG);
 895					mToast.show();
 896				}
 897				mPendingConferenceInvite = null;
 898			}
 899		}
 900	}
 901
 902
 903	private UiCallback<Conversation> adhocCallback = new UiCallback<Conversation>() {
 904		@Override
 905		public void success(final Conversation conversation) {
 906			runOnUiThread(new Runnable() {
 907				@Override
 908				public void run() {
 909					switchToConversation(conversation);
 910					hideToast();
 911				}
 912			});
 913		}
 914
 915		@Override
 916		public void error(final int errorCode, Conversation object) {
 917			runOnUiThread(new Runnable() {
 918				@Override
 919				public void run() {
 920					replaceToast(getString(errorCode));
 921				}
 922			});
 923		}
 924
 925		@Override
 926		public void userInputRequried(PendingIntent pi, Conversation object) {
 927
 928		}
 929	};
 930
 931	public int getTertiaryTextColor() {
 932		return this.mTertiaryTextColor;
 933	}
 934
 935	public int getSecondaryTextColor() {
 936		return this.mSecondaryTextColor;
 937	}
 938
 939	public int getPrimaryTextColor() {
 940		return this.mPrimaryTextColor;
 941	}
 942
 943	public int getWarningTextColor() {
 944		return this.mColorRed;
 945	}
 946
 947	public int getOnlineColor() {
 948		return this.mColorGreen;
 949	}
 950
 951	public int getPrimaryBackgroundColor() {
 952		return this.mPrimaryBackgroundColor;
 953	}
 954
 955	public int getSecondaryBackgroundColor() {
 956		return this.mSecondaryBackgroundColor;
 957	}
 958
 959	public int getPixel(int dp) {
 960		DisplayMetrics metrics = getResources().getDisplayMetrics();
 961		return ((int) (dp * metrics.density));
 962	}
 963
 964	public boolean copyTextToClipboard(String text, int labelResId) {
 965		ClipboardManager mClipBoardManager = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
 966		String label = getResources().getString(labelResId);
 967		if (mClipBoardManager != null) {
 968			ClipData mClipData = ClipData.newPlainText(label, text);
 969			mClipBoardManager.setPrimaryClip(mClipData);
 970			return true;
 971		}
 972		return false;
 973	}
 974
 975	protected void registerNdefPushMessageCallback() {
 976		NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(this);
 977		if (nfcAdapter != null && nfcAdapter.isEnabled()) {
 978			nfcAdapter.setNdefPushMessageCallback(new NfcAdapter.CreateNdefMessageCallback() {
 979				@Override
 980				public NdefMessage createNdefMessage(NfcEvent nfcEvent) {
 981					return new NdefMessage(new NdefRecord[]{
 982							NdefRecord.createUri(getShareableUri()),
 983							NdefRecord.createApplicationRecord("eu.siacs.conversations")
 984					});
 985				}
 986			}, this);
 987		}
 988	}
 989
 990	protected boolean neverCompressPictures() {
 991		return getPreferences().getString("picture_compression", "auto").equals("never");
 992	}
 993
 994	protected boolean manuallyChangePresence() {
 995		return getPreferences().getBoolean(SettingsActivity.MANUALLY_CHANGE_PRESENCE, false);
 996	}
 997
 998	protected void unregisterNdefPushMessageCallback() {
 999		NfcAdapter nfcAdapter = NfcAdapter.getDefaultAdapter(this);
1000		if (nfcAdapter != null && nfcAdapter.isEnabled()) {
1001			nfcAdapter.setNdefPushMessageCallback(null,this);
1002		}
1003	}
1004
1005	protected String getShareableUri() {
1006		return null;
1007	}
1008
1009	protected void shareUri() {
1010		String uri = getShareableUri();
1011		if (uri == null || uri.isEmpty()) {
1012			return;
1013		}
1014		Intent shareIntent = new Intent();
1015		shareIntent.setAction(Intent.ACTION_SEND);
1016		shareIntent.putExtra(Intent.EXTRA_TEXT, getShareableUri());
1017		shareIntent.setType("text/plain");
1018		try {
1019			startActivity(Intent.createChooser(shareIntent, getText(R.string.share_uri_with)));
1020		} catch (ActivityNotFoundException e) {
1021			Toast.makeText(this, R.string.no_application_to_share_uri, Toast.LENGTH_SHORT).show();
1022		}
1023	}
1024
1025	@Override
1026	public void onResume() {
1027		super.onResume();
1028		if (this.getShareableUri()!=null) {
1029			this.registerNdefPushMessageCallback();
1030		}
1031	}
1032
1033	protected int findTheme() {
1034		Boolean dark   = getPreferences().getString("theme", "light").equals("dark");
1035		Boolean larger = getPreferences().getBoolean("use_larger_font", false);
1036
1037		if(dark) {
1038			if(larger)
1039				return R.style.ConversationsTheme_Dark_LargerText;
1040			else
1041				return R.style.ConversationsTheme_Dark;
1042		} else {
1043			if (larger)
1044				return R.style.ConversationsTheme_LargerText;
1045			else
1046				return R.style.ConversationsTheme;
1047		}
1048	}
1049
1050	@Override
1051	public void onPause() {
1052		super.onPause();
1053		this.unregisterNdefPushMessageCallback();
1054	}
1055
1056	protected void showQrCode() {
1057		String uri = getShareableUri();
1058		if (uri!=null) {
1059			Point size = new Point();
1060			getWindowManager().getDefaultDisplay().getSize(size);
1061			final int width = (size.x < size.y ? size.x : size.y);
1062			Bitmap bitmap = BarcodeProvider.createAztecBitmap(uri, width);
1063			ImageView view = new ImageView(this);
1064			view.setBackgroundColor(Color.WHITE);
1065			view.setImageBitmap(bitmap);
1066			AlertDialog.Builder builder = new AlertDialog.Builder(this);
1067			builder.setView(view);
1068			builder.create().show();
1069		}
1070	}
1071
1072	protected Account extractAccount(Intent intent) {
1073		String jid = intent != null ? intent.getStringExtra(EXTRA_ACCOUNT) : null;
1074		try {
1075			return jid != null ? xmppConnectionService.findAccountByJid(Jid.fromString(jid)) : null;
1076		} catch (InvalidJidException e) {
1077			return null;
1078		}
1079	}
1080
1081	public static class ConferenceInvite {
1082		private String uuid;
1083		private List<Jid> jids = new ArrayList<>();
1084
1085		public static ConferenceInvite parse(Intent data) {
1086			ConferenceInvite invite = new ConferenceInvite();
1087			invite.uuid = data.getStringExtra("conversation");
1088			if (invite.uuid == null) {
1089				return null;
1090			}
1091			try {
1092				if (data.getBooleanExtra("multiple", false)) {
1093					String[] toAdd = data.getStringArrayExtra("contacts");
1094					for (String item : toAdd) {
1095						invite.jids.add(Jid.fromString(item));
1096					}
1097				} else {
1098					invite.jids.add(Jid.fromString(data.getStringExtra("contact")));
1099				}
1100			} catch (final InvalidJidException ignored) {
1101				return null;
1102			}
1103			return invite;
1104		}
1105
1106		public boolean execute(XmppActivity activity) {
1107			XmppConnectionService service = activity.xmppConnectionService;
1108			Conversation conversation = service.findConversationByUuid(this.uuid);
1109			if (conversation == null) {
1110				return false;
1111			}
1112			if (conversation.getMode() == Conversation.MODE_MULTI) {
1113				for (Jid jid : jids) {
1114					service.invite(conversation, jid);
1115				}
1116				return false;
1117			} else {
1118				jids.add(conversation.getJid().toBareJid());
1119				return service.createAdhocConference(conversation.getAccount(), null, jids, activity.adhocCallback);
1120			}
1121		}
1122	}
1123
1124	public AvatarService avatarService() {
1125		return xmppConnectionService.getAvatarService();
1126	}
1127
1128	class BitmapWorkerTask extends AsyncTask<Message, Void, Bitmap> {
1129		private final WeakReference<ImageView> imageViewReference;
1130		private Message message = null;
1131
1132		public BitmapWorkerTask(ImageView imageView) {
1133			imageViewReference = new WeakReference<>(imageView);
1134		}
1135
1136		@Override
1137		protected Bitmap doInBackground(Message... params) {
1138			if (isCancelled()) {
1139				return null;
1140			}
1141			message = params[0];
1142			try {
1143				return xmppConnectionService.getFileBackend().getThumbnail(
1144						message, (int) (metrics.density * 288), false);
1145			} catch (FileNotFoundException e) {
1146				return null;
1147			}
1148		}
1149
1150		@Override
1151		protected void onPostExecute(Bitmap bitmap) {
1152			if (bitmap != null && !isCancelled()) {
1153				final ImageView imageView = imageViewReference.get();
1154				if (imageView != null) {
1155					imageView.setImageBitmap(bitmap);
1156					imageView.setBackgroundColor(0x00000000);
1157				}
1158			}
1159		}
1160	}
1161
1162	public void loadBitmap(Message message, ImageView imageView) {
1163		Bitmap bm;
1164		try {
1165			bm = xmppConnectionService.getFileBackend().getThumbnail(message,
1166					(int) (metrics.density * 288), true);
1167		} catch (FileNotFoundException e) {
1168			bm = null;
1169		}
1170		if (bm != null) {
1171			cancelPotentialWork(message, imageView);
1172			imageView.setImageBitmap(bm);
1173			imageView.setBackgroundColor(0x00000000);
1174		} else {
1175			if (cancelPotentialWork(message, imageView)) {
1176				imageView.setBackgroundColor(0xff333333);
1177				imageView.setImageDrawable(null);
1178				final BitmapWorkerTask task = new BitmapWorkerTask(imageView);
1179				final AsyncDrawable asyncDrawable = new AsyncDrawable(
1180						getResources(), null, task);
1181				imageView.setImageDrawable(asyncDrawable);
1182				try {
1183					task.execute(message);
1184				} catch (final RejectedExecutionException ignored) {
1185					ignored.printStackTrace();
1186				}
1187			}
1188		}
1189	}
1190
1191	public static boolean cancelPotentialWork(Message message, ImageView imageView) {
1192		final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
1193
1194		if (bitmapWorkerTask != null) {
1195			final Message oldMessage = bitmapWorkerTask.message;
1196			if (oldMessage == null || message != oldMessage) {
1197				bitmapWorkerTask.cancel(true);
1198			} else {
1199				return false;
1200			}
1201		}
1202		return true;
1203	}
1204
1205	private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
1206		if (imageView != null) {
1207			final Drawable drawable = imageView.getDrawable();
1208			if (drawable instanceof AsyncDrawable) {
1209				final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
1210				return asyncDrawable.getBitmapWorkerTask();
1211			}
1212		}
1213		return null;
1214	}
1215
1216	static class AsyncDrawable extends BitmapDrawable {
1217		private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
1218
1219		public AsyncDrawable(Resources res, Bitmap bitmap,
1220				BitmapWorkerTask bitmapWorkerTask) {
1221			super(res, bitmap);
1222			bitmapWorkerTaskReference = new WeakReference<>(
1223					bitmapWorkerTask);
1224		}
1225
1226		public BitmapWorkerTask getBitmapWorkerTask() {
1227			return bitmapWorkerTaskReference.get();
1228		}
1229	}
1230}