1package eu.siacs.conversations.ui;
   2
   3import android.Manifest;
   4import android.annotation.SuppressLint;
   5import android.content.res.TypedArray;
   6import android.databinding.DataBindingUtil;
   7import android.databinding.ViewDataBinding;
   8import android.graphics.drawable.Drawable;
   9import android.support.annotation.AttrRes;
  10import android.support.annotation.DrawableRes;
  11import android.support.annotation.NonNull;
  12import android.support.annotation.Nullable;
  13import android.support.design.widget.TabLayout;
  14import android.support.v4.content.ContextCompat;
  15import android.support.v7.app.AlertDialog;
  16import android.app.Dialog;
  17import android.app.PendingIntent;
  18import android.content.ActivityNotFoundException;
  19import android.content.Context;
  20import android.content.DialogInterface;
  21import android.content.DialogInterface.OnClickListener;
  22import android.content.Intent;
  23import android.content.pm.PackageManager;
  24import android.net.Uri;
  25import android.os.Build;
  26import android.os.Bundle;
  27import android.support.v4.app.Fragment;
  28import android.support.v4.app.FragmentManager;
  29import android.support.v4.app.FragmentTransaction;
  30import android.support.v4.app.ListFragment;
  31import android.support.v4.view.MenuItemCompat;
  32import android.support.v4.view.PagerAdapter;
  33import android.support.v4.view.ViewPager;
  34import android.support.v7.app.ActionBar;
  35import android.support.v7.widget.Toolbar;
  36import android.text.Editable;
  37import android.text.SpannableString;
  38import android.text.Spanned;
  39import android.text.TextWatcher;
  40import android.text.style.TypefaceSpan;
  41import android.util.Log;
  42import android.util.Pair;
  43import android.view.ContextMenu;
  44import android.view.ContextMenu.ContextMenuInfo;
  45import android.view.KeyEvent;
  46import android.view.Menu;
  47import android.view.MenuItem;
  48import android.view.View;
  49import android.view.ViewGroup;
  50import android.view.inputmethod.InputMethodManager;
  51import android.widget.AdapterView;
  52import android.widget.AdapterView.AdapterContextMenuInfo;
  53import android.widget.AdapterView.OnItemClickListener;
  54import android.widget.ArrayAdapter;
  55import android.widget.AutoCompleteTextView;
  56import android.widget.CheckBox;
  57import android.widget.Checkable;
  58import android.widget.EditText;
  59import android.widget.ListView;
  60import android.widget.Spinner;
  61import android.widget.TextView;
  62import android.widget.Toast;
  63
  64import java.util.ArrayList;
  65import java.util.Arrays;
  66import java.util.Collection;
  67import java.util.Collections;
  68import java.util.List;
  69import java.util.concurrent.atomic.AtomicBoolean;
  70
  71import eu.siacs.conversations.Config;
  72import eu.siacs.conversations.R;
  73import eu.siacs.conversations.databinding.ActivityStartConversationBinding;
  74import eu.siacs.conversations.entities.Account;
  75import eu.siacs.conversations.entities.Bookmark;
  76import eu.siacs.conversations.entities.Contact;
  77import eu.siacs.conversations.entities.Conversation;
  78import eu.siacs.conversations.entities.ListItem;
  79import eu.siacs.conversations.entities.Presence;
  80import eu.siacs.conversations.services.XmppConnectionService.OnRosterUpdate;
  81import eu.siacs.conversations.ui.adapter.KnownHostsAdapter;
  82import eu.siacs.conversations.ui.adapter.ListItemAdapter;
  83import eu.siacs.conversations.ui.interfaces.OnBackendConnected;
  84import eu.siacs.conversations.ui.service.EmojiService;
  85import eu.siacs.conversations.ui.util.DelayedHintHelper;
  86import eu.siacs.conversations.ui.util.PendingItem;
  87import eu.siacs.conversations.utils.XmppUri;
  88import eu.siacs.conversations.xmpp.OnUpdateBlocklist;
  89import eu.siacs.conversations.xmpp.XmppConnection;
  90import rocks.xmpp.addr.Jid;
  91
  92public class StartConversationActivity extends XmppActivity implements OnRosterUpdate, OnUpdateBlocklist, CreateConferenceDialog.CreateConferenceDialogListener, JoinConferenceDialog.JoinConferenceDialogListener {
  93
  94	private final int REQUEST_SYNC_CONTACTS = 0x28cf;
  95	private final int REQUEST_CREATE_CONFERENCE = 0x39da;
  96	public int conference_context_id;
  97	public int contact_context_id;
  98	private ListPagerAdapter mListPagerAdapter;
  99	private List<ListItem> contacts = new ArrayList<>();
 100	private ListItemAdapter mContactsAdapter;
 101	private List<ListItem> conferences = new ArrayList<>();
 102	private ListItemAdapter mConferenceAdapter;
 103	private List<String> mActivatedAccounts = new ArrayList<>();
 104	private Invite mPendingInvite = null;
 105	private EditText mSearchEditText;
 106	private AtomicBoolean mRequestedContactsPermission = new AtomicBoolean(false);
 107	private boolean mHideOfflineContacts = false;
 108	private MenuItem.OnActionExpandListener mOnActionExpandListener = new MenuItem.OnActionExpandListener() {
 109
 110		@Override
 111		public boolean onMenuItemActionExpand(MenuItem item) {
 112			mSearchEditText.post(() -> {
 113				mSearchEditText.requestFocus();
 114				if (oneShotKeyboardSuppress.compareAndSet(true,false)) {
 115					return;
 116				}
 117				InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
 118				if (imm != null) {
 119					imm.showSoftInput(mSearchEditText, InputMethodManager.SHOW_IMPLICIT);
 120				}
 121			});
 122
 123			return true;
 124		}
 125
 126		@Override
 127		public boolean onMenuItemActionCollapse(MenuItem item) {
 128			hideKeyboard();
 129			mSearchEditText.setText("");
 130			filter(null);
 131			return true;
 132		}
 133	};
 134	private TextWatcher mSearchTextWatcher = new TextWatcher() {
 135
 136		@Override
 137		public void afterTextChanged(Editable editable) {
 138			filter(editable.toString());
 139		}
 140
 141		@Override
 142		public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 143		}
 144
 145		@Override
 146		public void onTextChanged(CharSequence s, int start, int before, int count) {
 147		}
 148	};
 149	private TextView.OnEditorActionListener mSearchDone = new TextView.OnEditorActionListener() {
 150		@Override
 151		public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
 152			int pos = binding.startConversationViewPager.getCurrentItem();
 153			if (pos == 0) {
 154				if (contacts.size() == 1) {
 155					openConversationForContact((Contact) contacts.get(0));
 156					return true;
 157				}
 158			} else {
 159				if (conferences.size() == 1) {
 160					openConversationsForBookmark((Bookmark) conferences.get(0));
 161					return true;
 162				}
 163			}
 164			hideKeyboard();
 165			mListPagerAdapter.requestFocus(pos);
 166			return true;
 167		}
 168	};
 169	private MenuItem mMenuSearchView;
 170	private ListItemAdapter.OnTagClickedListener mOnTagClickedListener = new ListItemAdapter.OnTagClickedListener() {
 171		@Override
 172		public void onTagClicked(String tag) {
 173			if (mMenuSearchView != null) {
 174				mMenuSearchView.expandActionView();
 175				mSearchEditText.setText("");
 176				mSearchEditText.append(tag);
 177				filter(tag);
 178			}
 179		}
 180	};
 181	private final PendingItem<String> mInitialSearchValue = new PendingItem<>();
 182	private final AtomicBoolean oneShotKeyboardSuppress = new AtomicBoolean();
 183	private Pair<Integer, Intent> mPostponedActivityResult;
 184	private Toast mToast;
 185	private UiCallback<Conversation> mAdhocConferenceCallback = new UiCallback<Conversation>() {
 186		@Override
 187		public void success(final Conversation conversation) {
 188			runOnUiThread(() -> {
 189				hideToast();
 190				switchToConversation(conversation);
 191			});
 192		}
 193
 194		@Override
 195		public void error(final int errorCode, Conversation object) {
 196			runOnUiThread(() -> replaceToast(getString(errorCode)));
 197		}
 198
 199		@Override
 200		public void userInputRequried(PendingIntent pi, Conversation object) {
 201
 202		}
 203	};
 204	private ActivityStartConversationBinding binding;
 205	private ViewPager.SimpleOnPageChangeListener mOnPageChangeListener = new ViewPager.SimpleOnPageChangeListener() {
 206		@Override
 207		public void onPageSelected(int position) {
 208			onTabChanged();
 209		}
 210	};
 211
 212	public static void populateAccountSpinner(Context context, List<String> accounts, Spinner spinner) {
 213		if (accounts.size() > 0) {
 214			ArrayAdapter<String> adapter = new ArrayAdapter<>(context, R.layout.simple_list_item, accounts);
 215			adapter.setDropDownViewResource(R.layout.simple_list_item);
 216			spinner.setAdapter(adapter);
 217			spinner.setEnabled(true);
 218		} else {
 219			ArrayAdapter<String> adapter = new ArrayAdapter<>(context,
 220					R.layout.simple_list_item,
 221					Arrays.asList(context.getString(R.string.no_accounts)));
 222			adapter.setDropDownViewResource(R.layout.simple_list_item);
 223			spinner.setAdapter(adapter);
 224			spinner.setEnabled(false);
 225		}
 226	}
 227
 228	public static void launch(Context context) {
 229		final Intent intent = new Intent(context, StartConversationActivity.class);
 230		context.startActivity(intent);
 231	}
 232
 233	protected void hideToast() {
 234		if (mToast != null) {
 235			mToast.cancel();
 236		}
 237	}
 238
 239	protected void replaceToast(String msg) {
 240		hideToast();
 241		mToast = Toast.makeText(this, msg, Toast.LENGTH_LONG);
 242		mToast.show();
 243	}
 244
 245	@Override
 246	public void onRosterUpdate() {
 247		this.refreshUi();
 248	}
 249
 250	@Override
 251	public void onCreate(Bundle savedInstanceState) {
 252		super.onCreate(savedInstanceState);
 253		new EmojiService(this).init();
 254		this.binding = DataBindingUtil.setContentView(this, R.layout.activity_start_conversation);
 255		Toolbar toolbar = (Toolbar) binding.toolbar;
 256		setSupportActionBar(toolbar);
 257		configureActionBar(getSupportActionBar());
 258		this.binding.fab.setOnClickListener((v) -> {
 259			if (binding.startConversationViewPager.getCurrentItem() == 0) {
 260				String searchString = mSearchEditText != null ? mSearchEditText.getText().toString() : null;
 261				if (searchString != null && !searchString.trim().isEmpty()) {
 262					try {
 263						Jid jid = Jid.of(searchString);
 264						if (jid.getLocal() != null && jid.isBareJid() && jid.getDomain().contains(".")) {
 265							showCreateContactDialog(jid.toString(), null);
 266							return;
 267						}
 268					} catch (IllegalArgumentException ignored) {
 269						//ignore and fall through
 270					}
 271				}
 272				showCreateContactDialog(null, null);
 273			} else {
 274				showCreateConferenceDialog();
 275			}
 276		});
 277		TabLayout tabLayout = (TabLayout) findViewById(R.id.tab_layout);
 278		tabLayout.setupWithViewPager(binding.startConversationViewPager);
 279		binding.startConversationViewPager.addOnPageChangeListener(mOnPageChangeListener);
 280		mListPagerAdapter = new ListPagerAdapter(getSupportFragmentManager());
 281		binding.startConversationViewPager.setAdapter(mListPagerAdapter);
 282
 283		mConferenceAdapter = new ListItemAdapter(this, conferences);
 284		mContactsAdapter = new ListItemAdapter(this, contacts);
 285		mContactsAdapter.setOnTagClickedListener(this.mOnTagClickedListener);
 286		this.mHideOfflineContacts = getPreferences().getBoolean("hide_offline", false);
 287
 288	}
 289
 290	@Override
 291	public void onStart() {
 292		super.onStart();
 293		final int theme = findTheme();
 294		if (this.mTheme != theme) {
 295			recreate();
 296		} else {
 297			Intent i = getIntent();
 298			if (i == null || !i.hasExtra(WelcomeActivity.EXTRA_INVITE_URI)) {
 299				askForContactsPermissions();
 300			}
 301		}
 302		mConferenceAdapter.refreshSettings();
 303		mContactsAdapter.refreshSettings();
 304	}
 305
 306	@Override
 307	public void onNewIntent(Intent intent) {
 308		if (xmppConnectionServiceBound) {
 309			handleIntent(intent);
 310		} else {
 311			setIntent(intent);
 312		}
 313	}
 314
 315	protected void openConversationForContact(int position) {
 316		Contact contact = (Contact) contacts.get(position);
 317		openConversationForContact(contact);
 318	}
 319
 320	protected void openConversationForContact(Contact contact) {
 321		Conversation conversation = xmppConnectionService.findOrCreateConversation(contact.getAccount(), contact.getJid(), false, true);
 322		switchToConversation(conversation);
 323	}
 324
 325	protected void openConversationForContact() {
 326		int position = contact_context_id;
 327		openConversationForContact(position);
 328	}
 329
 330	protected void openConversationForBookmark() {
 331		openConversationForBookmark(conference_context_id);
 332	}
 333
 334	protected void openConversationForBookmark(int position) {
 335		Bookmark bookmark = (Bookmark) conferences.get(position);
 336		openConversationsForBookmark(bookmark);
 337	}
 338
 339	protected void shareBookmarkUri() {
 340		shareBookmarkUri(conference_context_id);
 341	}
 342
 343	protected void shareBookmarkUri(int position) {
 344		Bookmark bookmark = (Bookmark) conferences.get(position);
 345		Intent shareIntent = new Intent();
 346		shareIntent.setAction(Intent.ACTION_SEND);
 347		shareIntent.putExtra(Intent.EXTRA_TEXT, "xmpp:" + bookmark.getJid().asBareJid().toEscapedString() + "?join");
 348		shareIntent.setType("text/plain");
 349		try {
 350			startActivity(Intent.createChooser(shareIntent, getText(R.string.share_uri_with)));
 351		} catch (ActivityNotFoundException e) {
 352			Toast.makeText(this, R.string.no_application_to_share_uri, Toast.LENGTH_SHORT).show();
 353		}
 354	}
 355
 356	protected void openConversationsForBookmark(Bookmark bookmark) {
 357		Jid jid = bookmark.getJid();
 358		if (jid == null) {
 359			Toast.makeText(this, R.string.invalid_jid, Toast.LENGTH_SHORT).show();
 360			return;
 361		}
 362		Conversation conversation = xmppConnectionService.findOrCreateConversation(bookmark.getAccount(), jid, true, true, true);
 363		bookmark.setConversation(conversation);
 364		if (!bookmark.autojoin() && getPreferences().getBoolean("autojoin", getResources().getBoolean(R.bool.autojoin))) {
 365			bookmark.setAutojoin(true);
 366			xmppConnectionService.pushBookmarks(bookmark.getAccount());
 367		}
 368		switchToConversation(conversation);
 369	}
 370
 371	protected void openDetailsForContact() {
 372		int position = contact_context_id;
 373		Contact contact = (Contact) contacts.get(position);
 374		switchToContactDetails(contact);
 375	}
 376
 377	protected void toggleContactBlock() {
 378		final int position = contact_context_id;
 379		BlockContactDialog.show(this, (Contact) contacts.get(position));
 380	}
 381
 382	protected void deleteContact() {
 383		final int position = contact_context_id;
 384		final Contact contact = (Contact) contacts.get(position);
 385		final AlertDialog.Builder builder = new AlertDialog.Builder(this);
 386		builder.setNegativeButton(R.string.cancel, null);
 387		builder.setTitle(R.string.action_delete_contact);
 388		builder.setMessage(getString(R.string.remove_contact_text,
 389				contact.getJid()));
 390		builder.setPositiveButton(R.string.delete, new OnClickListener() {
 391
 392			@Override
 393			public void onClick(DialogInterface dialog, int which) {
 394				xmppConnectionService.deleteContactOnServer(contact);
 395				filter(mSearchEditText.getText().toString());
 396			}
 397		});
 398		builder.create().show();
 399	}
 400
 401	protected void deleteConference() {
 402		int position = conference_context_id;
 403		final Bookmark bookmark = (Bookmark) conferences.get(position);
 404
 405		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 406		builder.setNegativeButton(R.string.cancel, null);
 407		builder.setTitle(R.string.delete_bookmark);
 408		builder.setMessage(getString(R.string.remove_bookmark_text,
 409				bookmark.getJid()));
 410		builder.setPositiveButton(R.string.delete, new OnClickListener() {
 411
 412			@Override
 413			public void onClick(DialogInterface dialog, int which) {
 414				bookmark.setConversation(null);
 415				Account account = bookmark.getAccount();
 416				account.getBookmarks().remove(bookmark);
 417				xmppConnectionService.pushBookmarks(account);
 418				filter(mSearchEditText.getText().toString());
 419			}
 420		});
 421		builder.create().show();
 422
 423	}
 424
 425	@SuppressLint("InflateParams")
 426	protected void showCreateContactDialog(final String prefilledJid, final Invite invite) {
 427		FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
 428		Fragment prev = getSupportFragmentManager().findFragmentByTag(FRAGMENT_TAG_DIALOG);
 429		if (prev != null) {
 430			ft.remove(prev);
 431		}
 432		ft.addToBackStack(null);
 433		EnterJidDialog dialog = EnterJidDialog.newInstance(
 434				mActivatedAccounts,
 435				getString(R.string.dialog_title_create_contact),
 436				getString(R.string.create),
 437				prefilledJid,
 438				null,
 439				invite == null || !invite.hasFingerprints()
 440		);
 441
 442		dialog.setOnEnterJidDialogPositiveListener((accountJid, contactJid) -> {
 443			if (!xmppConnectionServiceBound) {
 444				return false;
 445			}
 446
 447			final Account account = xmppConnectionService.findAccountByJid(accountJid);
 448			if (account == null) {
 449				return true;
 450			}
 451
 452			final Contact contact = account.getRoster().getContact(contactJid);
 453			if (invite != null && invite.getName() != null) {
 454				contact.setServerName(invite.getName());
 455			}
 456			if (contact.isSelf()) {
 457				switchToConversation(contact, null);
 458				return true;
 459			} else if (contact.showInRoster()) {
 460				throw new EnterJidDialog.JidError(getString(R.string.contact_already_exists));
 461			} else {
 462				xmppConnectionService.createContact(contact, true);
 463				if (invite != null && invite.hasFingerprints()) {
 464					xmppConnectionService.verifyFingerprints(contact, invite.getFingerprints());
 465				}
 466				switchToConversation(contact, invite == null ? null : invite.getBody());
 467				return true;
 468			}
 469		});
 470		dialog.show(ft, FRAGMENT_TAG_DIALOG);
 471	}
 472
 473	@SuppressLint("InflateParams")
 474	protected void showJoinConferenceDialog(final String prefilledJid) {
 475		FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
 476		Fragment prev = getSupportFragmentManager().findFragmentByTag(FRAGMENT_TAG_DIALOG);
 477		if (prev != null) {
 478			ft.remove(prev);
 479		}
 480		ft.addToBackStack(null);
 481		JoinConferenceDialog joinConferenceFragment = JoinConferenceDialog.newInstance(prefilledJid, mActivatedAccounts);
 482		joinConferenceFragment.show(ft, FRAGMENT_TAG_DIALOG);
 483	}
 484
 485	private void showCreateConferenceDialog() {
 486		FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
 487		Fragment prev = getSupportFragmentManager().findFragmentByTag(FRAGMENT_TAG_DIALOG);
 488		if (prev != null) {
 489			ft.remove(prev);
 490		}
 491		ft.addToBackStack(null);
 492		CreateConferenceDialog createConferenceFragment = CreateConferenceDialog.newInstance(mActivatedAccounts);
 493		createConferenceFragment.show(ft, FRAGMENT_TAG_DIALOG);
 494	}
 495
 496	private Account getSelectedAccount(Spinner spinner) {
 497		if (!spinner.isEnabled()) {
 498			return null;
 499		}
 500		Jid jid;
 501		try {
 502			if (Config.DOMAIN_LOCK != null) {
 503				jid = Jid.of((String) spinner.getSelectedItem(), Config.DOMAIN_LOCK, null);
 504			} else {
 505				jid = Jid.of((String) spinner.getSelectedItem());
 506			}
 507		} catch (final IllegalArgumentException e) {
 508			return null;
 509		}
 510		return xmppConnectionService.findAccountByJid(jid);
 511	}
 512
 513	protected void switchToConversation(Contact contact, String body) {
 514		Conversation conversation = xmppConnectionService
 515				.findOrCreateConversation(contact.getAccount(),
 516						contact.getJid(), false, true);
 517		switchToConversation(conversation, body, false);
 518	}
 519
 520	@Override
 521	public void invalidateOptionsMenu() {
 522		boolean isExpanded = mMenuSearchView != null && mMenuSearchView.isActionViewExpanded();
 523		String text = mSearchEditText != null ? mSearchEditText.getText().toString() : "";
 524		if (isExpanded) {
 525			mInitialSearchValue.push(text);
 526			oneShotKeyboardSuppress.set(true);
 527		}
 528		super.invalidateOptionsMenu();
 529	}
 530
 531	@Override
 532	public boolean onCreateOptionsMenu(Menu menu) {
 533		getMenuInflater().inflate(R.menu.start_conversation, menu);
 534		MenuItem menuHideOffline = menu.findItem(R.id.action_hide_offline);
 535		MenuItem joinGroupChat = menu.findItem(R.id.action_join_conference);
 536		MenuItem qrCodeScanMenuItem = menu.findItem(R.id.action_scan_qr_code);
 537		joinGroupChat.setVisible(binding.startConversationViewPager.getCurrentItem() == 1);
 538		qrCodeScanMenuItem.setVisible(isCameraFeatureAvailable());
 539		menuHideOffline.setChecked(this.mHideOfflineContacts);
 540		mMenuSearchView = menu.findItem(R.id.action_search);
 541		mMenuSearchView.setOnActionExpandListener(mOnActionExpandListener);
 542		View mSearchView = mMenuSearchView.getActionView();
 543		mSearchEditText = mSearchView.findViewById(R.id.search_field);
 544		mSearchEditText.addTextChangedListener(mSearchTextWatcher);
 545		mSearchEditText.setOnEditorActionListener(mSearchDone);
 546		String initialSearchValue = mInitialSearchValue.pop();
 547		if (initialSearchValue != null) {
 548			mMenuSearchView.expandActionView();
 549			mSearchEditText.append(initialSearchValue);
 550			filter(initialSearchValue);
 551		}
 552		return super.onCreateOptionsMenu(menu);
 553	}
 554
 555	@Override
 556	public boolean onOptionsItemSelected(MenuItem item) {
 557		switch (item.getItemId()) {
 558			case R.id.action_join_conference:
 559				showJoinConferenceDialog(null);
 560				return true;
 561			case R.id.action_scan_qr_code:
 562				UriHandlerActivity.scan(this);
 563				return true;
 564			case R.id.action_hide_offline:
 565				mHideOfflineContacts = !item.isChecked();
 566				getPreferences().edit().putBoolean("hide_offline", mHideOfflineContacts).commit();
 567				if (mSearchEditText != null) {
 568					filter(mSearchEditText.getText().toString());
 569				}
 570				invalidateOptionsMenu();
 571		}
 572		return super.onOptionsItemSelected(item);
 573	}
 574
 575	@Override
 576	public boolean onKeyUp(int keyCode, KeyEvent event) {
 577		if (keyCode == KeyEvent.KEYCODE_SEARCH && !event.isLongPress()) {
 578			openSearch();
 579			return true;
 580		}
 581		int c = event.getUnicodeChar();
 582		if (c > 32) {
 583			if (mSearchEditText != null && !mSearchEditText.isFocused()) {
 584				openSearch();
 585				mSearchEditText.append(Character.toString((char) c));
 586				return true;
 587			}
 588		}
 589		return super.onKeyUp(keyCode, event);
 590	}
 591
 592	private void openSearch() {
 593		if (mMenuSearchView != null) {
 594			mMenuSearchView.expandActionView();
 595		}
 596	}
 597
 598	@Override
 599	public void onActivityResult(int requestCode, int resultCode, Intent intent) {
 600		if (resultCode == RESULT_OK) {
 601			if (xmppConnectionServiceBound) {
 602				this.mPostponedActivityResult = null;
 603				if (requestCode == REQUEST_CREATE_CONFERENCE) {
 604					Account account = extractAccount(intent);
 605					final String subject = intent.getStringExtra("subject");
 606					List<Jid> jids = new ArrayList<>();
 607					if (intent.getBooleanExtra("multiple", false)) {
 608						String[] toAdd = intent.getStringArrayExtra("contacts");
 609						for (String item : toAdd) {
 610							try {
 611								jids.add(Jid.of(item));
 612							} catch (IllegalArgumentException e) {
 613								//ignored
 614							}
 615						}
 616					} else {
 617						try {
 618							jids.add(Jid.of(intent.getStringExtra("contact")));
 619						} catch (Exception e) {
 620							//ignored
 621						}
 622					}
 623					if (account != null && jids.size() > 0) {
 624						if (xmppConnectionService.createAdhocConference(account, subject, jids, mAdhocConferenceCallback)) {
 625							mToast = Toast.makeText(this, R.string.creating_conference, Toast.LENGTH_LONG);
 626							mToast.show();
 627						}
 628					}
 629				}
 630			} else {
 631				this.mPostponedActivityResult = new Pair<>(requestCode, intent);
 632			}
 633		}
 634		super.onActivityResult(requestCode, requestCode, intent);
 635	}
 636
 637	private void askForContactsPermissions() {
 638		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 639			if (checkSelfPermission(Manifest.permission.READ_CONTACTS) != PackageManager.PERMISSION_GRANTED) {
 640				if (mRequestedContactsPermission.compareAndSet(false, true)) {
 641					if (shouldShowRequestPermissionRationale(Manifest.permission.READ_CONTACTS)) {
 642						AlertDialog.Builder builder = new AlertDialog.Builder(this);
 643						builder.setTitle(R.string.sync_with_contacts);
 644						builder.setMessage(R.string.sync_with_contacts_long);
 645						builder.setPositiveButton(R.string.next, new OnClickListener() {
 646							@Override
 647							public void onClick(DialogInterface dialog, int which) {
 648								if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 649									requestPermissions(new String[]{Manifest.permission.READ_CONTACTS}, REQUEST_SYNC_CONTACTS);
 650								}
 651							}
 652						});
 653						if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
 654							builder.setOnDismissListener(new DialogInterface.OnDismissListener() {
 655								@Override
 656								public void onDismiss(DialogInterface dialog) {
 657									if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 658										requestPermissions(new String[]{Manifest.permission.READ_CONTACTS}, REQUEST_SYNC_CONTACTS);
 659									}
 660								}
 661							});
 662						}
 663						builder.create().show();
 664					} else {
 665						requestPermissions(new String[]{Manifest.permission.READ_CONTACTS}, 0);
 666					}
 667				}
 668			}
 669		}
 670	}
 671
 672	@Override
 673	public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[], @NonNull int[] grantResults) {
 674		if (grantResults.length > 0)
 675			if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
 676				ScanActivity.onRequestPermissionResult(this, requestCode, grantResults);
 677				if (requestCode == REQUEST_SYNC_CONTACTS && xmppConnectionServiceBound) {
 678					xmppConnectionService.loadPhoneContacts();
 679				}
 680			}
 681	}
 682
 683	@Override
 684	protected void onBackendConnected() {
 685		if (mPostponedActivityResult != null) {
 686			onActivityResult(mPostponedActivityResult.first, RESULT_OK, mPostponedActivityResult.second);
 687			this.mPostponedActivityResult = null;
 688		}
 689		this.mActivatedAccounts.clear();
 690		for (Account account : xmppConnectionService.getAccounts()) {
 691			if (account.getStatus() != Account.State.DISABLED) {
 692				if (Config.DOMAIN_LOCK != null) {
 693					this.mActivatedAccounts.add(account.getJid().getLocal());
 694				} else {
 695					this.mActivatedAccounts.add(account.getJid().asBareJid().toString());
 696				}
 697			}
 698		}
 699		final Intent intent = getIntent();
 700		final ActionBar ab = getSupportActionBar();
 701		boolean init = intent != null && intent.getBooleanExtra("init", false);
 702		boolean noConversations = xmppConnectionService.getConversations().size() == 0;
 703		if ((init || noConversations) && ab != null) {
 704			ab.setDisplayShowHomeEnabled(false);
 705			ab.setDisplayHomeAsUpEnabled(false);
 706			ab.setHomeButtonEnabled(false);
 707		}
 708		if (this.mPendingInvite != null) {
 709			mPendingInvite.invite();
 710			this.mPendingInvite = null;
 711			filter(null);
 712		} else if (!handleIntent(getIntent())) {
 713			if (mSearchEditText != null) {
 714				filter(mSearchEditText.getText().toString());
 715			} else {
 716				filter(null);
 717			}
 718		} else {
 719			filter(null);
 720		}
 721		setIntent(null);
 722		Fragment fragment = getSupportFragmentManager().findFragmentByTag(FRAGMENT_TAG_DIALOG);
 723		if (fragment != null && fragment instanceof OnBackendConnected) {
 724			Log.d(Config.LOGTAG,"calling on backend connected on dialog");
 725			((OnBackendConnected) fragment).onBackendConnected();
 726		}
 727	}
 728
 729	protected boolean handleIntent(Intent intent) {
 730		if (intent == null) {
 731			return false;
 732		}
 733		final String inviteUri = intent.getStringExtra(WelcomeActivity.EXTRA_INVITE_URI);
 734		if (inviteUri != null) {
 735			Invite invite = new Invite(inviteUri);
 736			if (invite.isJidValid()) {
 737				return invite.invite();
 738			}
 739		}
 740		if (intent.getAction() == null) {
 741			return false;
 742		}
 743		switch (intent.getAction()) {
 744			case Intent.ACTION_SENDTO:
 745			case Intent.ACTION_VIEW:
 746				Uri uri = intent.getData();
 747				if (uri != null) {
 748					Invite invite = new Invite(intent.getData(), intent.getBooleanExtra("scanned", false));
 749					invite.account = intent.getStringExtra("account");
 750					return invite.invite();
 751				} else {
 752					return false;
 753				}
 754		}
 755		return false;
 756	}
 757
 758	private boolean handleJid(Invite invite) {
 759		List<Contact> contacts = xmppConnectionService.findContacts(invite.getJid(), invite.account);
 760		if (invite.isAction(XmppUri.ACTION_JOIN)) {
 761			Conversation muc = xmppConnectionService.findFirstMuc(invite.getJid());
 762			if (muc != null) {
 763				switchToConversation(muc, invite.getBody(), false);
 764				return true;
 765			} else {
 766				showJoinConferenceDialog(invite.getJid().asBareJid().toString());
 767				return false;
 768			}
 769		} else if (contacts.size() == 0) {
 770			showCreateContactDialog(invite.getJid().toString(), invite);
 771			return false;
 772		} else if (contacts.size() == 1) {
 773			Contact contact = contacts.get(0);
 774			if (!invite.isSafeSource() && invite.hasFingerprints()) {
 775				displayVerificationWarningDialog(contact, invite);
 776			} else {
 777				if (invite.hasFingerprints()) {
 778					if (xmppConnectionService.verifyFingerprints(contact, invite.getFingerprints())) {
 779						Toast.makeText(this, R.string.verified_fingerprints, Toast.LENGTH_SHORT).show();
 780					}
 781				}
 782				if (invite.account != null) {
 783					xmppConnectionService.getShortcutService().report(contact);
 784				}
 785				switchToConversation(contact, invite.getBody());
 786			}
 787			return true;
 788		} else {
 789			if (mMenuSearchView != null) {
 790				mMenuSearchView.expandActionView();
 791				mSearchEditText.setText("");
 792				mSearchEditText.append(invite.getJid().toString());
 793				filter(invite.getJid().toString());
 794			} else {
 795				mInitialSearchValue.push(invite.getJid().toString());
 796			}
 797			return true;
 798		}
 799	}
 800
 801	private void displayVerificationWarningDialog(final Contact contact, final Invite invite) {
 802		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 803		builder.setTitle(R.string.verify_omemo_keys);
 804		View view = getLayoutInflater().inflate(R.layout.dialog_verify_fingerprints, null);
 805		final CheckBox isTrustedSource = (CheckBox) view.findViewById(R.id.trusted_source);
 806		TextView warning = (TextView) view.findViewById(R.id.warning);
 807		String jid = contact.getJid().asBareJid().toString();
 808		SpannableString spannable = new SpannableString(getString(R.string.verifying_omemo_keys_trusted_source, jid, contact.getDisplayName()));
 809		int start = spannable.toString().indexOf(jid);
 810		if (start >= 0) {
 811			spannable.setSpan(new TypefaceSpan("monospace"), start, start + jid.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
 812		}
 813		warning.setText(spannable);
 814		builder.setView(view);
 815		builder.setPositiveButton(R.string.confirm, (dialog, which) -> {
 816			if (isTrustedSource.isChecked() && invite.hasFingerprints()) {
 817				xmppConnectionService.verifyFingerprints(contact, invite.getFingerprints());
 818			}
 819			switchToConversation(contact, invite.getBody());
 820		});
 821		builder.setNegativeButton(R.string.cancel, (dialog, which) -> StartConversationActivity.this.finish());
 822		AlertDialog dialog = builder.create();
 823		dialog.setCanceledOnTouchOutside(false);
 824		dialog.setOnCancelListener(dialog1 -> StartConversationActivity.this.finish());
 825		dialog.show();
 826	}
 827
 828	protected void filter(String needle) {
 829		if (xmppConnectionServiceBound) {
 830			this.filterContacts(needle);
 831			this.filterConferences(needle);
 832		}
 833	}
 834
 835	protected void filterContacts(String needle) {
 836		this.contacts.clear();
 837		for (Account account : xmppConnectionService.getAccounts()) {
 838			if (account.getStatus() != Account.State.DISABLED) {
 839				for (Contact contact : account.getRoster().getContacts()) {
 840					Presence.Status s = contact.getShownStatus();
 841					if (contact.showInRoster() && contact.match(this, needle)
 842							&& (!this.mHideOfflineContacts
 843							|| (needle != null && !needle.trim().isEmpty())
 844							|| s.compareTo(Presence.Status.OFFLINE) < 0)) {
 845						this.contacts.add(contact);
 846					}
 847				}
 848			}
 849		}
 850		Collections.sort(this.contacts);
 851		mContactsAdapter.notifyDataSetChanged();
 852	}
 853
 854	protected void filterConferences(String needle) {
 855		this.conferences.clear();
 856		for (Account account : xmppConnectionService.getAccounts()) {
 857			if (account.getStatus() != Account.State.DISABLED) {
 858				for (Bookmark bookmark : account.getBookmarks()) {
 859					if (bookmark.match(this, needle)) {
 860						this.conferences.add(bookmark);
 861					}
 862				}
 863			}
 864		}
 865		Collections.sort(this.conferences);
 866		mConferenceAdapter.notifyDataSetChanged();
 867	}
 868
 869	private void onTabChanged() {
 870		@DrawableRes final int fabDrawable;
 871		if (binding.startConversationViewPager.getCurrentItem() == 0) {
 872			fabDrawable = R.drawable.ic_person_add_white_24dp;
 873		} else {
 874			fabDrawable = R.drawable.ic_group_add_white_24dp;
 875		}
 876		binding.fab.setImageResource(fabDrawable);
 877		invalidateOptionsMenu();
 878	}
 879
 880	@Override
 881	public void OnUpdateBlocklist(final Status status) {
 882		refreshUi();
 883	}
 884
 885	@Override
 886	protected void refreshUiReal() {
 887		if (mSearchEditText != null) {
 888			filter(mSearchEditText.getText().toString());
 889		}
 890	}
 891
 892	@Override
 893	public void onCreateDialogPositiveClick(Spinner spinner,String subject) {
 894		if (!xmppConnectionServiceBound) {
 895			return;
 896		}
 897		final Account account = getSelectedAccount(spinner);
 898		if (account == null) {
 899			return;
 900		}
 901		Intent intent = new Intent(getApplicationContext(), ChooseContactActivity.class);
 902		intent.putExtra("multiple", true);
 903		intent.putExtra("show_enter_jid", true);
 904		intent.putExtra("subject", subject);
 905		intent.putExtra(EXTRA_ACCOUNT, account.getJid().asBareJid().toString());
 906		intent.putExtra(ChooseContactActivity.EXTRA_TITLE_RES_ID, R.string.choose_participants);
 907		startActivityForResult(intent, REQUEST_CREATE_CONFERENCE);
 908	}
 909
 910	@Override
 911	public void onJoinDialogPositiveClick(Dialog dialog, Spinner spinner, AutoCompleteTextView jid, boolean isBookmarkChecked) {
 912		if (!xmppConnectionServiceBound) {
 913			return;
 914		}
 915		final Account account = getSelectedAccount(spinner);
 916		if (account == null) {
 917			return;
 918		}
 919		final Jid conferenceJid;
 920		try {
 921			conferenceJid = Jid.of(jid.getText().toString());
 922		} catch (final IllegalArgumentException e) {
 923			jid.setError(getString(R.string.invalid_jid));
 924			return;
 925		}
 926
 927		if (isBookmarkChecked) {
 928			if (account.hasBookmarkFor(conferenceJid)) {
 929				jid.setError(getString(R.string.bookmark_already_exists));
 930			} else {
 931				final Bookmark bookmark = new Bookmark(account, conferenceJid.asBareJid());
 932				bookmark.setAutojoin(getPreferences().getBoolean("autojoin", getResources().getBoolean(R.bool.autojoin)));
 933				String nick = conferenceJid.getResource();
 934				if (nick != null && !nick.isEmpty()) {
 935					bookmark.setNick(nick);
 936				}
 937				account.getBookmarks().add(bookmark);
 938				xmppConnectionService.pushBookmarks(account);
 939				final Conversation conversation = xmppConnectionService
 940						.findOrCreateConversation(account, conferenceJid, true, true, true);
 941				bookmark.setConversation(conversation);
 942				dialog.dismiss();
 943				switchToConversation(conversation);
 944			}
 945		} else {
 946			final Conversation conversation = xmppConnectionService
 947					.findOrCreateConversation(account, conferenceJid, true, true, true);
 948			dialog.dismiss();
 949			switchToConversation(conversation);
 950		}
 951	}
 952
 953	public static class MyListFragment extends ListFragment {
 954		private AdapterView.OnItemClickListener mOnItemClickListener;
 955		private int mResContextMenu;
 956
 957		public void setContextMenu(final int res) {
 958			this.mResContextMenu = res;
 959		}
 960
 961		@Override
 962		public void onListItemClick(final ListView l, final View v, final int position, final long id) {
 963			if (mOnItemClickListener != null) {
 964				mOnItemClickListener.onItemClick(l, v, position, id);
 965			}
 966		}
 967
 968		public void setOnListItemClickListener(AdapterView.OnItemClickListener l) {
 969			this.mOnItemClickListener = l;
 970		}
 971
 972		@Override
 973		public void onViewCreated(@NonNull final View view, final Bundle savedInstanceState) {
 974			super.onViewCreated(view, savedInstanceState);
 975			registerForContextMenu(getListView());
 976			getListView().setFastScrollEnabled(true);
 977			getListView().setDivider(null);
 978			getListView().setDividerHeight(0);
 979		}
 980
 981		@Override
 982		public void onCreateContextMenu(final ContextMenu menu, final View v,
 983		                                final ContextMenuInfo menuInfo) {
 984			super.onCreateContextMenu(menu, v, menuInfo);
 985			final StartConversationActivity activity = (StartConversationActivity) getActivity();
 986			if (activity == null) {
 987				return;
 988			}
 989			activity.getMenuInflater().inflate(mResContextMenu, menu);
 990			final AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
 991			if (mResContextMenu == R.menu.conference_context) {
 992				activity.conference_context_id = acmi.position;
 993			} else if (mResContextMenu == R.menu.contact_context) {
 994				activity.contact_context_id = acmi.position;
 995				final Contact contact = (Contact) activity.contacts.get(acmi.position);
 996				final MenuItem blockUnblockItem = menu.findItem(R.id.context_contact_block_unblock);
 997				final MenuItem showContactDetailsItem = menu.findItem(R.id.context_contact_details);
 998				if (contact.isSelf()) {
 999					showContactDetailsItem.setVisible(false);
1000				}
1001				XmppConnection xmpp = contact.getAccount().getXmppConnection();
1002				if (xmpp != null && xmpp.getFeatures().blocking() && !contact.isSelf()) {
1003					if (contact.isBlocked()) {
1004						blockUnblockItem.setTitle(R.string.unblock_contact);
1005					} else {
1006						blockUnblockItem.setTitle(R.string.block_contact);
1007					}
1008				} else {
1009					blockUnblockItem.setVisible(false);
1010				}
1011			}
1012		}
1013
1014		@Override
1015		public boolean onContextItemSelected(final MenuItem item) {
1016			StartConversationActivity activity = (StartConversationActivity) getActivity();
1017			if (activity == null) {
1018				return true;
1019			}
1020			switch (item.getItemId()) {
1021				case R.id.context_start_conversation:
1022					activity.openConversationForContact();
1023					break;
1024				case R.id.context_contact_details:
1025					activity.openDetailsForContact();
1026					break;
1027				case R.id.context_contact_block_unblock:
1028					activity.toggleContactBlock();
1029					break;
1030				case R.id.context_delete_contact:
1031					activity.deleteContact();
1032					break;
1033				case R.id.context_join_conference:
1034					activity.openConversationForBookmark();
1035					break;
1036				case R.id.context_share_uri:
1037					activity.shareBookmarkUri();
1038					break;
1039				case R.id.context_delete_conference:
1040					activity.deleteConference();
1041			}
1042			return true;
1043		}
1044	}
1045
1046	public class ListPagerAdapter extends PagerAdapter {
1047		FragmentManager fragmentManager;
1048		MyListFragment[] fragments;
1049
1050		public ListPagerAdapter(FragmentManager fm) {
1051			fragmentManager = fm;
1052			fragments = new MyListFragment[2];
1053		}
1054
1055		public void requestFocus(int pos) {
1056			if (fragments.length > pos) {
1057				fragments[pos].getListView().requestFocus();
1058			}
1059		}
1060
1061		@Override
1062		public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
1063			assert (0 <= position && position < fragments.length);
1064			FragmentTransaction trans = fragmentManager.beginTransaction();
1065			trans.remove(fragments[position]);
1066			trans.commit();
1067			fragments[position] = null;
1068		}
1069
1070		@Override
1071		public Fragment instantiateItem(@NonNull ViewGroup container, int position) {
1072			Fragment fragment = getItem(position);
1073			FragmentTransaction trans = fragmentManager.beginTransaction();
1074			trans.add(container.getId(), fragment, "fragment:" + position);
1075			trans.commit();
1076			return fragment;
1077		}
1078
1079		@Override
1080		public int getCount() {
1081			return fragments.length;
1082		}
1083
1084		@Override
1085		public boolean isViewFromObject(@NonNull View view, @NonNull Object fragment) {
1086			return ((Fragment) fragment).getView() == view;
1087		}
1088
1089		@Nullable
1090		@Override
1091		public CharSequence getPageTitle(int position) {
1092			switch (position) {
1093				case 0:
1094					return getResources().getString(R.string.contacts);
1095				case 1:
1096					return getResources().getString(R.string.conferences);
1097				default:
1098					return super.getPageTitle(position);
1099			}
1100		}
1101
1102		public Fragment getItem(int position) {
1103			assert (0 <= position && position < fragments.length);
1104			if (fragments[position] == null) {
1105				final MyListFragment listFragment = new MyListFragment();
1106				if (position == 1) {
1107					listFragment.setListAdapter(mConferenceAdapter);
1108					listFragment.setContextMenu(R.menu.conference_context);
1109					listFragment.setOnListItemClickListener((arg0, arg1, p, arg3) -> openConversationForBookmark(p));
1110				} else {
1111
1112					listFragment.setListAdapter(mContactsAdapter);
1113					listFragment.setContextMenu(R.menu.contact_context);
1114					listFragment.setOnListItemClickListener((arg0, arg1, p, arg3) -> openConversationForContact(p));
1115				}
1116				fragments[position] = listFragment;
1117			}
1118			return fragments[position];
1119		}
1120	}
1121
1122	private class Invite extends XmppUri {
1123
1124		public String account;
1125
1126		public Invite(final Uri uri) {
1127			super(uri);
1128		}
1129
1130		public Invite(final String uri) {
1131			super(uri);
1132		}
1133
1134		public Invite(Uri uri, boolean safeSource) {
1135			super(uri, safeSource);
1136		}
1137
1138		boolean invite() {
1139			if (!isJidValid()) {
1140				Toast.makeText(StartConversationActivity.this, R.string.invalid_jid, Toast.LENGTH_SHORT).show();
1141				return false;
1142			}
1143			if (getJid() != null) {
1144				return handleJid(this);
1145			}
1146			return false;
1147		}
1148	}
1149}