1package eu.siacs.conversations.ui;
   2
   3import android.Manifest;
   4import android.annotation.SuppressLint;
   5import android.app.Dialog;
   6import android.app.PendingIntent;
   7import android.content.ActivityNotFoundException;
   8import android.content.Context;
   9import android.content.DialogInterface;
  10import android.content.Intent;
  11import android.content.SharedPreferences;
  12import android.content.pm.PackageManager;
  13import android.databinding.DataBindingUtil;
  14import android.net.Uri;
  15import android.os.Build;
  16import android.os.Bundle;
  17import android.support.annotation.DrawableRes;
  18import android.support.annotation.NonNull;
  19import android.support.annotation.Nullable;
  20import android.support.v4.app.Fragment;
  21import android.support.v4.app.FragmentManager;
  22import android.support.v4.app.FragmentTransaction;
  23import android.support.v4.app.ListFragment;
  24import android.support.v4.view.PagerAdapter;
  25import android.support.v4.view.ViewPager;
  26import android.support.v4.widget.SwipeRefreshLayout;
  27import android.support.v7.app.ActionBar;
  28import android.support.v7.app.AlertDialog;
  29import android.support.v7.widget.Toolbar;
  30import android.text.Editable;
  31import android.text.Html;
  32import android.text.SpannableString;
  33import android.text.Spanned;
  34import android.text.TextWatcher;
  35import android.text.method.LinkMovementMethod;
  36import android.text.util.Linkify;
  37import android.util.Log;
  38import android.util.Pair;
  39import android.view.ContextMenu;
  40import android.view.ContextMenu.ContextMenuInfo;
  41import android.view.KeyEvent;
  42import android.view.Menu;
  43import android.view.MenuItem;
  44import android.view.View;
  45import android.view.ViewGroup;
  46import android.view.inputmethod.InputMethodManager;
  47import android.widget.AdapterView;
  48import android.widget.AdapterView.AdapterContextMenuInfo;
  49import android.widget.ArrayAdapter;
  50import android.widget.AutoCompleteTextView;
  51import android.widget.CheckBox;
  52import android.widget.EditText;
  53import android.widget.ListView;
  54import android.widget.Spinner;
  55import android.widget.TextView;
  56import android.widget.Toast;
  57
  58import java.util.ArrayList;
  59import java.util.Collections;
  60import java.util.List;
  61import java.util.concurrent.atomic.AtomicBoolean;
  62
  63import eu.siacs.conversations.Config;
  64import eu.siacs.conversations.R;
  65import eu.siacs.conversations.databinding.ActivityStartConversationBinding;
  66import eu.siacs.conversations.entities.Account;
  67import eu.siacs.conversations.entities.Bookmark;
  68import eu.siacs.conversations.entities.Contact;
  69import eu.siacs.conversations.entities.Conversation;
  70import eu.siacs.conversations.entities.ListItem;
  71import eu.siacs.conversations.entities.Presence;
  72import eu.siacs.conversations.services.QuickConversationsService;
  73import eu.siacs.conversations.services.XmppConnectionService;
  74import eu.siacs.conversations.services.XmppConnectionService.OnRosterUpdate;
  75import eu.siacs.conversations.ui.adapter.ListItemAdapter;
  76import eu.siacs.conversations.ui.interfaces.OnBackendConnected;
  77import eu.siacs.conversations.ui.service.EmojiService;
  78import eu.siacs.conversations.ui.util.JidDialog;
  79import eu.siacs.conversations.ui.util.MenuDoubleTabUtil;
  80import eu.siacs.conversations.ui.util.PendingItem;
  81import eu.siacs.conversations.ui.util.SoftKeyboardUtils;
  82import eu.siacs.conversations.ui.widget.SwipeRefreshListFragment;
  83import eu.siacs.conversations.utils.AccountUtils;
  84import eu.siacs.conversations.utils.XmppUri;
  85import eu.siacs.conversations.xmpp.OnUpdateBlocklist;
  86import eu.siacs.conversations.xmpp.XmppConnection;
  87import rocks.xmpp.addr.Jid;
  88
  89public class StartConversationActivity extends XmppActivity implements XmppConnectionService.OnConversationUpdate, OnRosterUpdate, OnUpdateBlocklist, CreateConferenceDialog.CreateConferenceDialogListener, JoinConferenceDialog.JoinConferenceDialogListener, SwipeRefreshLayout.OnRefreshListener {
  90
  91	public static final String EXTRA_INVITE_URI = "eu.siacs.conversations.invite_uri";
  92
  93	private final int REQUEST_SYNC_CONTACTS = 0x28cf;
  94	private final int REQUEST_CREATE_CONFERENCE = 0x39da;
  95	private final PendingItem<Intent> pendingViewIntent = new PendingItem<>();
  96	private final PendingItem<String> mInitialSearchValue = new PendingItem<>();
  97	private final AtomicBoolean oneShotKeyboardSuppress = new AtomicBoolean();
  98	public int conference_context_id;
  99	public int contact_context_id;
 100	private ListPagerAdapter mListPagerAdapter;
 101	private List<ListItem> contacts = new ArrayList<>();
 102	private ListItemAdapter mContactsAdapter;
 103	private List<ListItem> conferences = new ArrayList<>();
 104	private ListItemAdapter mConferenceAdapter;
 105	private List<String> mActivatedAccounts = new ArrayList<>();
 106	private EditText mSearchEditText;
 107	private AtomicBoolean mRequestedContactsPermission = new AtomicBoolean(false);
 108	private boolean mHideOfflineContacts = false;
 109	private boolean createdByViewIntent = false;
 110	private MenuItem.OnActionExpandListener mOnActionExpandListener = new MenuItem.OnActionExpandListener() {
 111
 112		@Override
 113		public boolean onMenuItemActionExpand(MenuItem item) {
 114			mSearchEditText.post(() -> {
 115				updateSearchViewHint();
 116				mSearchEditText.requestFocus();
 117				if (oneShotKeyboardSuppress.compareAndSet(true, false)) {
 118					return;
 119				}
 120				InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
 121				if (imm != null) {
 122					imm.showSoftInput(mSearchEditText, InputMethodManager.SHOW_IMPLICIT);
 123				}
 124			});
 125
 126			return true;
 127		}
 128
 129		@Override
 130		public boolean onMenuItemActionCollapse(MenuItem item) {
 131			SoftKeyboardUtils.hideSoftKeyboard(StartConversationActivity.this);
 132			mSearchEditText.setText("");
 133			filter(null);
 134			return true;
 135		}
 136	};
 137	private TextWatcher mSearchTextWatcher = new TextWatcher() {
 138
 139		@Override
 140		public void afterTextChanged(Editable editable) {
 141			filter(editable.toString());
 142		}
 143
 144		@Override
 145		public void beforeTextChanged(CharSequence s, int start, int count, int after) {
 146		}
 147
 148		@Override
 149		public void onTextChanged(CharSequence s, int start, int before, int count) {
 150		}
 151	};
 152	private MenuItem mMenuSearchView;
 153	private ListItemAdapter.OnTagClickedListener mOnTagClickedListener = new ListItemAdapter.OnTagClickedListener() {
 154		@Override
 155		public void onTagClicked(String tag) {
 156			if (mMenuSearchView != null) {
 157				mMenuSearchView.expandActionView();
 158				mSearchEditText.setText("");
 159				mSearchEditText.append(tag);
 160				filter(tag);
 161			}
 162		}
 163	};
 164	private Pair<Integer, Intent> mPostponedActivityResult;
 165	private Toast mToast;
 166	private UiCallback<Conversation> mAdhocConferenceCallback = new UiCallback<Conversation>() {
 167		@Override
 168		public void success(final Conversation conversation) {
 169			runOnUiThread(() -> {
 170				hideToast();
 171				switchToConversation(conversation);
 172			});
 173		}
 174
 175		@Override
 176		public void error(final int errorCode, Conversation object) {
 177			runOnUiThread(() -> replaceToast(getString(errorCode)));
 178		}
 179
 180		@Override
 181		public void userInputRequried(PendingIntent pi, Conversation object) {
 182
 183		}
 184	};
 185	private ActivityStartConversationBinding binding;
 186	private TextView.OnEditorActionListener mSearchDone = new TextView.OnEditorActionListener() {
 187		@Override
 188		public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
 189			int pos = binding.startConversationViewPager.getCurrentItem();
 190			if (pos == 0) {
 191				if (contacts.size() == 1) {
 192					openConversationForContact((Contact) contacts.get(0));
 193					return true;
 194				} else if (contacts.size() == 0 && conferences.size() == 1) {
 195					openConversationsForBookmark((Bookmark) conferences.get(0));
 196					return true;
 197				}
 198			} else {
 199				if (conferences.size() == 1) {
 200					openConversationsForBookmark((Bookmark) conferences.get(0));
 201					return true;
 202				} else if (conferences.size() == 0 && contacts.size() == 1) {
 203					openConversationForContact((Contact) contacts.get(0));
 204					return true;
 205				}
 206			}
 207			SoftKeyboardUtils.hideSoftKeyboard(StartConversationActivity.this);
 208			mListPagerAdapter.requestFocus(pos);
 209			return true;
 210		}
 211	};
 212	private ViewPager.SimpleOnPageChangeListener mOnPageChangeListener = new ViewPager.SimpleOnPageChangeListener() {
 213		@Override
 214		public void onPageSelected(int position) {
 215			onTabChanged();
 216		}
 217	};
 218
 219	public static void populateAccountSpinner(Context context, List<String> accounts, Spinner spinner) {
 220		if (accounts.size() > 0) {
 221			ArrayAdapter<String> adapter = new ArrayAdapter<>(context, R.layout.simple_list_item, accounts);
 222			adapter.setDropDownViewResource(R.layout.simple_list_item);
 223			spinner.setAdapter(adapter);
 224			spinner.setEnabled(true);
 225		} else {
 226			ArrayAdapter<String> adapter = new ArrayAdapter<>(context,
 227					R.layout.simple_list_item,
 228					Collections.singletonList(context.getString(R.string.no_accounts)));
 229			adapter.setDropDownViewResource(R.layout.simple_list_item);
 230			spinner.setAdapter(adapter);
 231			spinner.setEnabled(false);
 232		}
 233	}
 234
 235	public static void launch(Context context) {
 236		final Intent intent = new Intent(context, StartConversationActivity.class);
 237		context.startActivity(intent);
 238	}
 239
 240	private static Intent createLauncherIntent(Context context) {
 241		final Intent intent = new Intent(context, StartConversationActivity.class);
 242		intent.setAction(Intent.ACTION_MAIN);
 243		intent.addCategory(Intent.CATEGORY_LAUNCHER);
 244		return intent;
 245	}
 246
 247	private static boolean isViewIntent(final Intent i) {
 248		return i != null && (Intent.ACTION_VIEW.equals(i.getAction()) || Intent.ACTION_SENDTO.equals(i.getAction()) || i.hasExtra(EXTRA_INVITE_URI));
 249	}
 250
 251	protected void hideToast() {
 252		if (mToast != null) {
 253			mToast.cancel();
 254		}
 255	}
 256
 257	protected void replaceToast(String msg) {
 258		hideToast();
 259		mToast = Toast.makeText(this, msg, Toast.LENGTH_LONG);
 260		mToast.show();
 261	}
 262
 263	@Override
 264	public void onRosterUpdate() {
 265		this.refreshUi();
 266	}
 267
 268	@Override
 269	public void onCreate(Bundle savedInstanceState) {
 270		super.onCreate(savedInstanceState);
 271		this.binding = DataBindingUtil.setContentView(this, R.layout.activity_start_conversation);
 272		Toolbar toolbar = (Toolbar) binding.toolbar;
 273		setSupportActionBar(toolbar);
 274		configureActionBar(getSupportActionBar());
 275		this.binding.fab.setOnClickListener((v) -> {
 276			if (binding.startConversationViewPager.getCurrentItem() == 0) {
 277				String searchString = mSearchEditText != null ? mSearchEditText.getText().toString() : null;
 278				if (searchString != null && !searchString.trim().isEmpty()) {
 279					try {
 280						Jid jid = Jid.of(searchString);
 281						if (jid.getLocal() != null && jid.isBareJid() && jid.getDomain().contains(".")) {
 282							showCreateContactDialog(jid.toString(), null);
 283							return;
 284						}
 285					} catch (IllegalArgumentException ignored) {
 286						//ignore and fall through
 287					}
 288				}
 289				showCreateContactDialog(null, null);
 290			} else {
 291				showCreateConferenceDialog();
 292			}
 293		});
 294		binding.tabLayout.setupWithViewPager(binding.startConversationViewPager);
 295		binding.startConversationViewPager.addOnPageChangeListener(mOnPageChangeListener);
 296		mListPagerAdapter = new ListPagerAdapter(getSupportFragmentManager());
 297		binding.startConversationViewPager.setAdapter(mListPagerAdapter);
 298
 299		mConferenceAdapter = new ListItemAdapter(this, conferences);
 300		mContactsAdapter = new ListItemAdapter(this, contacts);
 301		mContactsAdapter.setOnTagClickedListener(this.mOnTagClickedListener);
 302
 303		final SharedPreferences preferences = getPreferences();
 304
 305		this.mHideOfflineContacts = QuickConversationsService.isConversations() && preferences.getBoolean("hide_offline", false);
 306
 307		final boolean startSearching = preferences.getBoolean("start_searching",getResources().getBoolean(R.bool.start_searching));
 308
 309		final Intent intent;
 310		if (savedInstanceState == null) {
 311			intent = getIntent();
 312		} else {
 313			createdByViewIntent = savedInstanceState.getBoolean("created_by_view_intent", false);
 314			final String search = savedInstanceState.getString("search");
 315			if (search != null) {
 316				mInitialSearchValue.push(search);
 317			}
 318			intent = savedInstanceState.getParcelable("intent");
 319		}
 320
 321		if (isViewIntent(intent)) {
 322			pendingViewIntent.push(intent);
 323			createdByViewIntent = true;
 324			setIntent(createLauncherIntent(this));
 325		} else if (startSearching && mInitialSearchValue.peek() == null) {
 326			mInitialSearchValue.push("");
 327		}
 328		mRequestedContactsPermission.set(savedInstanceState != null && savedInstanceState.getBoolean("requested_contacts_permission",false));
 329	}
 330
 331	@Override
 332	public void onSaveInstanceState(Bundle savedInstanceState) {
 333		Intent pendingIntent = pendingViewIntent.peek();
 334		savedInstanceState.putParcelable("intent", pendingIntent != null ? pendingIntent : getIntent());
 335		savedInstanceState.putBoolean("requested_contacts_permission",mRequestedContactsPermission.get());
 336		savedInstanceState.putBoolean("created_by_view_intent",createdByViewIntent);
 337		if (mMenuSearchView != null && mMenuSearchView.isActionViewExpanded()) {
 338			savedInstanceState.putString("search", mSearchEditText != null ? mSearchEditText.getText().toString() : null);
 339		}
 340		super.onSaveInstanceState(savedInstanceState);
 341	}
 342
 343	@Override
 344	public void onStart() {
 345		super.onStart();
 346		final int theme = findTheme();
 347		if (this.mTheme != theme) {
 348			recreate();
 349		} else {
 350			if (pendingViewIntent.peek() == null) {
 351				askForContactsPermissions();
 352			}
 353		}
 354		mConferenceAdapter.refreshSettings();
 355		mContactsAdapter.refreshSettings();
 356	}
 357
 358	@Override
 359	public void onNewIntent(final Intent intent) {
 360		if (xmppConnectionServiceBound) {
 361			processViewIntent(intent);
 362		} else {
 363			pendingViewIntent.push(intent);
 364		}
 365		setIntent(createLauncherIntent(this));
 366	}
 367
 368	protected void openConversationForContact(int position) {
 369		Contact contact = (Contact) contacts.get(position);
 370		openConversationForContact(contact);
 371	}
 372
 373	protected void openConversationForContact(Contact contact) {
 374		Conversation conversation = xmppConnectionService.findOrCreateConversation(contact.getAccount(), contact.getJid(), false, true);
 375		SoftKeyboardUtils.hideSoftKeyboard(this);
 376		switchToConversation(conversation);
 377	}
 378
 379	protected void openConversationForBookmark() {
 380		openConversationForBookmark(conference_context_id);
 381	}
 382
 383	protected void openConversationForBookmark(int position) {
 384		Bookmark bookmark = (Bookmark) conferences.get(position);
 385		openConversationsForBookmark(bookmark);
 386	}
 387
 388	protected void shareBookmarkUri() {
 389		shareBookmarkUri(conference_context_id);
 390	}
 391
 392	protected void shareBookmarkUri(int position) {
 393		Bookmark bookmark = (Bookmark) conferences.get(position);
 394		Intent shareIntent = new Intent();
 395		shareIntent.setAction(Intent.ACTION_SEND);
 396		shareIntent.putExtra(Intent.EXTRA_TEXT, "xmpp:" + bookmark.getJid().asBareJid().toEscapedString() + "?join");
 397		shareIntent.setType("text/plain");
 398		try {
 399			startActivity(Intent.createChooser(shareIntent, getText(R.string.share_uri_with)));
 400		} catch (ActivityNotFoundException e) {
 401			Toast.makeText(this, R.string.no_application_to_share_uri, Toast.LENGTH_SHORT).show();
 402		}
 403	}
 404
 405	protected void openConversationsForBookmark(Bookmark bookmark) {
 406		final Jid jid = bookmark.getFullJid();
 407		if (jid == null) {
 408			Toast.makeText(this, R.string.invalid_jid, Toast.LENGTH_SHORT).show();
 409			return;
 410		}
 411		Conversation conversation = xmppConnectionService.findOrCreateConversation(bookmark.getAccount(), jid, true, true, true);
 412		bookmark.setConversation(conversation);
 413		if (!bookmark.autojoin() && getPreferences().getBoolean("autojoin", getResources().getBoolean(R.bool.autojoin))) {
 414			bookmark.setAutojoin(true);
 415			xmppConnectionService.pushBookmarks(bookmark.getAccount());
 416		}
 417		SoftKeyboardUtils.hideSoftKeyboard(this);
 418		switchToConversation(conversation);
 419	}
 420
 421	protected void openDetailsForContact() {
 422		int position = contact_context_id;
 423		Contact contact = (Contact) contacts.get(position);
 424		switchToContactDetails(contact);
 425	}
 426
 427	protected void showQrForContact() {
 428		int position = contact_context_id;
 429		Contact contact = (Contact) contacts.get(position);
 430		showQrCode("xmpp:"+contact.getJid().asBareJid().toEscapedString());
 431	}
 432
 433	protected void toggleContactBlock() {
 434		final int position = contact_context_id;
 435		BlockContactDialog.show(this, (Contact) contacts.get(position));
 436	}
 437
 438	protected void deleteContact() {
 439		final int position = contact_context_id;
 440		final Contact contact = (Contact) contacts.get(position);
 441		final AlertDialog.Builder builder = new AlertDialog.Builder(this);
 442		builder.setNegativeButton(R.string.cancel, null);
 443		builder.setTitle(R.string.action_delete_contact);
 444		builder.setMessage(JidDialog.style(this, R.string.remove_contact_text, contact.getJid().toEscapedString()));
 445		builder.setPositiveButton(R.string.delete, (dialog, which) -> {
 446			xmppConnectionService.deleteContactOnServer(contact);
 447			filter(mSearchEditText.getText().toString());
 448		});
 449		builder.create().show();
 450	}
 451
 452	protected void deleteConference() {
 453		int position = conference_context_id;
 454		final Bookmark bookmark = (Bookmark) conferences.get(position);
 455
 456		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 457		builder.setNegativeButton(R.string.cancel, null);
 458		builder.setTitle(R.string.delete_bookmark);
 459		builder.setMessage(JidDialog.style(this, R.string.remove_bookmark_text, bookmark.getJid().toEscapedString()));
 460		builder.setPositiveButton(R.string.delete, (dialog, which) -> {
 461			bookmark.setConversation(null);
 462			Account account = bookmark.getAccount();
 463			account.getBookmarks().remove(bookmark);
 464			xmppConnectionService.pushBookmarks(account);
 465			filter(mSearchEditText.getText().toString());
 466		});
 467		builder.create().show();
 468
 469	}
 470
 471	@SuppressLint("InflateParams")
 472	protected void showCreateContactDialog(final String prefilledJid, final Invite invite) {
 473		FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
 474		Fragment prev = getSupportFragmentManager().findFragmentByTag(FRAGMENT_TAG_DIALOG);
 475		if (prev != null) {
 476			ft.remove(prev);
 477		}
 478		ft.addToBackStack(null);
 479		EnterJidDialog dialog = EnterJidDialog.newInstance(
 480				mActivatedAccounts,
 481				getString(R.string.dialog_title_create_contact),
 482				getString(R.string.create),
 483				prefilledJid,
 484				null,
 485				invite == null || !invite.hasFingerprints()
 486		);
 487
 488		dialog.setOnEnterJidDialogPositiveListener((accountJid, contactJid) -> {
 489			if (!xmppConnectionServiceBound) {
 490				return false;
 491			}
 492
 493			final Account account = xmppConnectionService.findAccountByJid(accountJid);
 494			if (account == null) {
 495				return true;
 496			}
 497
 498			final Contact contact = account.getRoster().getContact(contactJid);
 499			if (invite != null && invite.getName() != null) {
 500				contact.setServerName(invite.getName());
 501			}
 502			if (contact.isSelf()) {
 503				switchToConversation(contact);
 504				return true;
 505			} else if (contact.showInRoster()) {
 506				throw new EnterJidDialog.JidError(getString(R.string.contact_already_exists));
 507			} else {
 508				xmppConnectionService.createContact(contact, true);
 509				if (invite != null && invite.hasFingerprints()) {
 510					xmppConnectionService.verifyFingerprints(contact, invite.getFingerprints());
 511				}
 512				switchToConversationDoNotAppend(contact, invite == null ? null : invite.getBody());
 513				return true;
 514			}
 515		});
 516		dialog.show(ft, FRAGMENT_TAG_DIALOG);
 517	}
 518
 519	@SuppressLint("InflateParams")
 520	protected void showJoinConferenceDialog(final String prefilledJid) {
 521		FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
 522		Fragment prev = getSupportFragmentManager().findFragmentByTag(FRAGMENT_TAG_DIALOG);
 523		if (prev != null) {
 524			ft.remove(prev);
 525		}
 526		ft.addToBackStack(null);
 527		JoinConferenceDialog joinConferenceFragment = JoinConferenceDialog.newInstance(prefilledJid, mActivatedAccounts);
 528		joinConferenceFragment.show(ft, FRAGMENT_TAG_DIALOG);
 529	}
 530
 531	private void showCreateConferenceDialog() {
 532		FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
 533		Fragment prev = getSupportFragmentManager().findFragmentByTag(FRAGMENT_TAG_DIALOG);
 534		if (prev != null) {
 535			ft.remove(prev);
 536		}
 537		ft.addToBackStack(null);
 538		CreateConferenceDialog createConferenceFragment = CreateConferenceDialog.newInstance(mActivatedAccounts);
 539		createConferenceFragment.show(ft, FRAGMENT_TAG_DIALOG);
 540	}
 541
 542	private Account getSelectedAccount(Spinner spinner) {
 543		if (!spinner.isEnabled()) {
 544			return null;
 545		}
 546		Jid jid;
 547		try {
 548			if (Config.DOMAIN_LOCK != null) {
 549				jid = Jid.of((String) spinner.getSelectedItem(), Config.DOMAIN_LOCK, null);
 550			} else {
 551				jid = Jid.of((String) spinner.getSelectedItem());
 552			}
 553		} catch (final IllegalArgumentException e) {
 554			return null;
 555		}
 556		return xmppConnectionService.findAccountByJid(jid);
 557	}
 558
 559	protected void switchToConversation(Contact contact) {
 560		Conversation conversation = xmppConnectionService.findOrCreateConversation(contact.getAccount(), contact.getJid(), false, true);
 561		switchToConversation(conversation);
 562	}
 563
 564	protected void switchToConversationDoNotAppend(Contact contact, String body) {
 565		Conversation conversation = xmppConnectionService.findOrCreateConversation(contact.getAccount(), contact.getJid(), false, true);
 566		switchToConversationDoNotAppend(conversation, body);
 567	}
 568
 569	@Override
 570	public void invalidateOptionsMenu() {
 571		boolean isExpanded = mMenuSearchView != null && mMenuSearchView.isActionViewExpanded();
 572		String text = mSearchEditText != null ? mSearchEditText.getText().toString() : "";
 573		if (isExpanded) {
 574			mInitialSearchValue.push(text);
 575			oneShotKeyboardSuppress.set(true);
 576		}
 577		super.invalidateOptionsMenu();
 578	}
 579
 580	private void updateSearchViewHint() {
 581		if (binding == null || mSearchEditText == null) {
 582			return;
 583		}
 584		if (binding.startConversationViewPager.getCurrentItem() == 0) {
 585			mSearchEditText.setHint(R.string.search_contacts);
 586		} else {
 587			mSearchEditText.setHint(R.string.search_groups);
 588		}
 589	}
 590
 591	@Override
 592	public boolean onCreateOptionsMenu(Menu menu) {
 593		getMenuInflater().inflate(R.menu.start_conversation, menu);
 594		AccountUtils.showHideMenuItems(menu);
 595		MenuItem menuHideOffline = menu.findItem(R.id.action_hide_offline);
 596		MenuItem joinGroupChat = menu.findItem(R.id.action_join_conference);
 597		MenuItem qrCodeScanMenuItem = menu.findItem(R.id.action_scan_qr_code);
 598		joinGroupChat.setVisible(binding.startConversationViewPager.getCurrentItem() == 1);
 599		qrCodeScanMenuItem.setVisible(isCameraFeatureAvailable());
 600		if (QuickConversationsService.isQuicksy()) {
 601			menuHideOffline.setVisible(false);
 602		} else {
 603			menuHideOffline.setVisible(true);
 604			menuHideOffline.setChecked(this.mHideOfflineContacts);
 605		}
 606		mMenuSearchView = menu.findItem(R.id.action_search);
 607		mMenuSearchView.setOnActionExpandListener(mOnActionExpandListener);
 608		View mSearchView = mMenuSearchView.getActionView();
 609		mSearchEditText = mSearchView.findViewById(R.id.search_field);
 610		mSearchEditText.addTextChangedListener(mSearchTextWatcher);
 611		mSearchEditText.setOnEditorActionListener(mSearchDone);
 612		String initialSearchValue = mInitialSearchValue.pop();
 613		if (initialSearchValue != null) {
 614			mMenuSearchView.expandActionView();
 615			mSearchEditText.append(initialSearchValue);
 616			filter(initialSearchValue);
 617		}
 618		updateSearchViewHint();
 619		return super.onCreateOptionsMenu(menu);
 620	}
 621
 622	@Override
 623	public boolean onOptionsItemSelected(MenuItem item) {
 624		if (MenuDoubleTabUtil.shouldIgnoreTap()) {
 625			return false;
 626		}
 627		switch (item.getItemId()) {
 628			case android.R.id.home:
 629				navigateBack();
 630				return true;
 631			case R.id.action_join_conference:
 632				showJoinConferenceDialog(null);
 633				return true;
 634			case R.id.action_scan_qr_code:
 635				UriHandlerActivity.scan(this);
 636				return true;
 637			case R.id.action_hide_offline:
 638				mHideOfflineContacts = !item.isChecked();
 639				getPreferences().edit().putBoolean("hide_offline", mHideOfflineContacts).apply();
 640				if (mSearchEditText != null) {
 641					filter(mSearchEditText.getText().toString());
 642				}
 643				invalidateOptionsMenu();
 644		}
 645		return super.onOptionsItemSelected(item);
 646	}
 647
 648	@Override
 649	public boolean onKeyUp(int keyCode, KeyEvent event) {
 650		if (keyCode == KeyEvent.KEYCODE_SEARCH && !event.isLongPress()) {
 651			openSearch();
 652			return true;
 653		}
 654		int c = event.getUnicodeChar();
 655		if (c > 32) {
 656			if (mSearchEditText != null && !mSearchEditText.isFocused()) {
 657				openSearch();
 658				mSearchEditText.append(Character.toString((char) c));
 659				return true;
 660			}
 661		}
 662		return super.onKeyUp(keyCode, event);
 663	}
 664
 665	private void openSearch() {
 666		if (mMenuSearchView != null) {
 667			mMenuSearchView.expandActionView();
 668		}
 669	}
 670
 671	@Override
 672	public void onActivityResult(int requestCode, int resultCode, Intent intent) {
 673		if (resultCode == RESULT_OK) {
 674			if (xmppConnectionServiceBound) {
 675				this.mPostponedActivityResult = null;
 676				if (requestCode == REQUEST_CREATE_CONFERENCE) {
 677					Account account = extractAccount(intent);
 678					final String name = intent.getStringExtra(ChooseContactActivity.EXTRA_GROUP_CHAT_NAME);
 679					final List<Jid> jids = ChooseContactActivity.extractJabberIds(intent);
 680					if (account != null && jids.size() > 0) {
 681						if (xmppConnectionService.createAdhocConference(account, name, jids, mAdhocConferenceCallback)) {
 682							mToast = Toast.makeText(this, R.string.creating_conference, Toast.LENGTH_LONG);
 683							mToast.show();
 684						}
 685					}
 686				}
 687			} else {
 688				this.mPostponedActivityResult = new Pair<>(requestCode, intent);
 689			}
 690		}
 691		super.onActivityResult(requestCode, requestCode, intent);
 692	}
 693
 694	private void askForContactsPermissions() {
 695		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
 696			if (checkSelfPermission(Manifest.permission.READ_CONTACTS) != PackageManager.PERMISSION_GRANTED) {
 697				if (mRequestedContactsPermission.compareAndSet(false, true)) {
 698					if (shouldShowRequestPermissionRationale(Manifest.permission.READ_CONTACTS)) {
 699						AlertDialog.Builder builder = new AlertDialog.Builder(this);
 700						builder.setTitle(R.string.sync_with_contacts);
 701						if (QuickConversationsService.isQuicksy()) {
 702							builder.setMessage(Html.fromHtml(getString(R.string.sync_with_contacts_quicksy)));
 703                        } else {
 704                            builder.setMessage(R.string.sync_with_contacts_long);
 705                        }
 706						builder.setPositiveButton(R.string.next, (dialog, which) -> requestPermissions(new String[]{Manifest.permission.READ_CONTACTS}, REQUEST_SYNC_CONTACTS));
 707						builder.setOnDismissListener(dialog -> requestPermissions(new String[]{Manifest.permission.READ_CONTACTS}, REQUEST_SYNC_CONTACTS));
 708						builder.setCancelable(false);
 709						AlertDialog dialog = builder.create();
 710						dialog.setCanceledOnTouchOutside(false);
 711						dialog.setOnShowListener(dialogInterface -> {
 712							final TextView tv =  dialog.findViewById(android.R.id.message);
 713							if (tv != null) {
 714								tv.setMovementMethod(LinkMovementMethod.getInstance());
 715							}
 716						});
 717						dialog.show();
 718					} else {
 719						requestPermissions(new String[]{Manifest.permission.READ_CONTACTS}, REQUEST_SYNC_CONTACTS);
 720					}
 721				}
 722			}
 723		}
 724	}
 725
 726	@Override
 727	public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[], @NonNull int[] grantResults) {
 728		if (grantResults.length > 0)
 729			if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
 730				ScanActivity.onRequestPermissionResult(this, requestCode, grantResults);
 731				if (requestCode == REQUEST_SYNC_CONTACTS && xmppConnectionServiceBound) {
 732					if (QuickConversationsService.isQuicksy()) {
 733						setRefreshing(true);
 734					}
 735					xmppConnectionService.loadPhoneContacts();
 736					xmppConnectionService.startContactObserver();
 737				}
 738			}
 739	}
 740
 741	private void configureHomeButton() {
 742		final ActionBar actionBar = getSupportActionBar();
 743		if (actionBar == null) {
 744			return;
 745		}
 746		boolean openConversations = !createdByViewIntent && !xmppConnectionService.isConversationsListEmpty(null);
 747		actionBar.setDisplayHomeAsUpEnabled(openConversations);
 748		actionBar.setDisplayHomeAsUpEnabled(openConversations);
 749
 750	}
 751
 752	@Override
 753	protected void onBackendConnected() {
 754
 755		if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M || checkSelfPermission(Manifest.permission.READ_CONTACTS) == PackageManager.PERMISSION_GRANTED) {
 756			xmppConnectionService.getQuickConversationsService().considerSyncBackground(false);
 757		}
 758		if (mPostponedActivityResult != null) {
 759			onActivityResult(mPostponedActivityResult.first, RESULT_OK, mPostponedActivityResult.second);
 760			this.mPostponedActivityResult = null;
 761		}
 762		this.mActivatedAccounts.clear();
 763		for (Account account : xmppConnectionService.getAccounts()) {
 764			if (account.getStatus() != Account.State.DISABLED) {
 765				if (Config.DOMAIN_LOCK != null) {
 766					this.mActivatedAccounts.add(account.getJid().getLocal());
 767				} else {
 768					this.mActivatedAccounts.add(account.getJid().asBareJid().toString());
 769				}
 770			}
 771		}
 772		configureHomeButton();
 773		Intent intent = pendingViewIntent.pop();
 774		if (intent != null && processViewIntent(intent)) {
 775			filter(null);
 776		} else {
 777			if (mSearchEditText != null) {
 778				filter(mSearchEditText.getText().toString());
 779			} else {
 780				filter(null);
 781			}
 782		}
 783		Fragment fragment = getSupportFragmentManager().findFragmentByTag(FRAGMENT_TAG_DIALOG);
 784		if (fragment instanceof OnBackendConnected) {
 785			Log.d(Config.LOGTAG, "calling on backend connected on dialog");
 786			((OnBackendConnected) fragment).onBackendConnected();
 787		}
 788		if (QuickConversationsService.isQuicksy()) {
 789			setRefreshing(xmppConnectionService.getQuickConversationsService().isSynchronizing());
 790		}
 791	}
 792
 793	protected boolean processViewIntent(@NonNull Intent intent) {
 794		final String inviteUri = intent.getStringExtra(EXTRA_INVITE_URI);
 795		if (inviteUri != null) {
 796			Invite invite = new Invite(inviteUri);
 797			if (invite.isJidValid()) {
 798				return invite.invite();
 799			}
 800		}
 801		final String action = intent.getAction();
 802		if (action == null) {
 803			return false;
 804		}
 805		switch (action) {
 806			case Intent.ACTION_SENDTO:
 807			case Intent.ACTION_VIEW:
 808				Uri uri = intent.getData();
 809				if (uri != null) {
 810					Invite invite = new Invite(intent.getData(), intent.getBooleanExtra("scanned", false));
 811					invite.account = intent.getStringExtra("account");
 812					return invite.invite();
 813				} else {
 814					return false;
 815				}
 816		}
 817		return false;
 818	}
 819
 820	private boolean handleJid(Invite invite) {
 821		List<Contact> contacts = xmppConnectionService.findContacts(invite.getJid(), invite.account);
 822		if (invite.isAction(XmppUri.ACTION_JOIN)) {
 823			Conversation muc = xmppConnectionService.findFirstMuc(invite.getJid());
 824			if (muc != null) {
 825				switchToConversationDoNotAppend(muc, invite.getBody());
 826				return true;
 827			} else {
 828				showJoinConferenceDialog(invite.getJid().asBareJid().toString());
 829				return false;
 830			}
 831		} else if (contacts.size() == 0) {
 832			showCreateContactDialog(invite.getJid().toString(), invite);
 833			return false;
 834		} else if (contacts.size() == 1) {
 835			Contact contact = contacts.get(0);
 836			if (!invite.isSafeSource() && invite.hasFingerprints()) {
 837				displayVerificationWarningDialog(contact, invite);
 838			} else {
 839				if (invite.hasFingerprints()) {
 840					if (xmppConnectionService.verifyFingerprints(contact, invite.getFingerprints())) {
 841						Toast.makeText(this, R.string.verified_fingerprints, Toast.LENGTH_SHORT).show();
 842					}
 843				}
 844				if (invite.account != null) {
 845					xmppConnectionService.getShortcutService().report(contact);
 846				}
 847				switchToConversationDoNotAppend(contact, invite.getBody());
 848			}
 849			return true;
 850		} else {
 851			if (mMenuSearchView != null) {
 852				mMenuSearchView.expandActionView();
 853				mSearchEditText.setText("");
 854				mSearchEditText.append(invite.getJid().toString());
 855				filter(invite.getJid().toString());
 856			} else {
 857				mInitialSearchValue.push(invite.getJid().toString());
 858			}
 859			return true;
 860		}
 861	}
 862
 863	private void displayVerificationWarningDialog(final Contact contact, final Invite invite) {
 864		AlertDialog.Builder builder = new AlertDialog.Builder(this);
 865		builder.setTitle(R.string.verify_omemo_keys);
 866		View view = getLayoutInflater().inflate(R.layout.dialog_verify_fingerprints, null);
 867		final CheckBox isTrustedSource = view.findViewById(R.id.trusted_source);
 868		TextView warning = view.findViewById(R.id.warning);
 869		warning.setText(JidDialog.style(this, R.string.verifying_omemo_keys_trusted_source, contact.getJid().asBareJid().toEscapedString(), contact.getDisplayName()));
 870		builder.setView(view);
 871		builder.setPositiveButton(R.string.confirm, (dialog, which) -> {
 872			if (isTrustedSource.isChecked() && invite.hasFingerprints()) {
 873				xmppConnectionService.verifyFingerprints(contact, invite.getFingerprints());
 874			}
 875			switchToConversationDoNotAppend(contact, invite.getBody());
 876		});
 877		builder.setNegativeButton(R.string.cancel, (dialog, which) -> StartConversationActivity.this.finish());
 878		AlertDialog dialog = builder.create();
 879		dialog.setCanceledOnTouchOutside(false);
 880		dialog.setOnCancelListener(dialog1 -> StartConversationActivity.this.finish());
 881		dialog.show();
 882	}
 883
 884	protected void filter(String needle) {
 885		if (xmppConnectionServiceBound) {
 886			this.filterContacts(needle);
 887			this.filterConferences(needle);
 888		}
 889	}
 890
 891	protected void filterContacts(String needle) {
 892		this.contacts.clear();
 893		final List<Account> accounts = xmppConnectionService.getAccounts();
 894		for (Account account : accounts) {
 895			if (account.getStatus() != Account.State.DISABLED) {
 896				for (Contact contact : account.getRoster().getContacts()) {
 897					Presence.Status s = contact.getShownStatus();
 898					if (contact.showInContactList() && contact.match(this, needle)
 899							&& (!this.mHideOfflineContacts
 900							|| (needle != null && !needle.trim().isEmpty())
 901							|| s.compareTo(Presence.Status.OFFLINE) < 0)) {
 902						this.contacts.add(contact);
 903					}
 904				}
 905			}
 906		}
 907		Collections.sort(this.contacts);
 908		mContactsAdapter.notifyDataSetChanged();
 909	}
 910
 911	protected void filterConferences(String needle) {
 912		this.conferences.clear();
 913		for (Account account : xmppConnectionService.getAccounts()) {
 914			if (account.getStatus() != Account.State.DISABLED) {
 915				for (Bookmark bookmark : account.getBookmarks()) {
 916					if (bookmark.match(this, needle)) {
 917						this.conferences.add(bookmark);
 918					}
 919				}
 920			}
 921		}
 922		Collections.sort(this.conferences);
 923		mConferenceAdapter.notifyDataSetChanged();
 924	}
 925
 926	private void onTabChanged() {
 927		@DrawableRes final int fabDrawable;
 928		if (binding.startConversationViewPager.getCurrentItem() == 0) {
 929			fabDrawable = R.drawable.ic_person_add_white_24dp;
 930		} else {
 931			fabDrawable = R.drawable.ic_group_add_white_24dp;
 932		}
 933		binding.fab.setImageResource(fabDrawable);
 934		invalidateOptionsMenu();
 935	}
 936
 937	@Override
 938	public void OnUpdateBlocklist(final Status status) {
 939		refreshUi();
 940	}
 941
 942	@Override
 943	protected void refreshUiReal() {
 944		if (mSearchEditText != null) {
 945			filter(mSearchEditText.getText().toString());
 946		}
 947		configureHomeButton();
 948		if (QuickConversationsService.isQuicksy()) {
 949			setRefreshing(xmppConnectionService.getQuickConversationsService().isSynchronizing());
 950		}
 951	}
 952
 953	@Override
 954	public void onBackPressed() {
 955		navigateBack();
 956	}
 957
 958	private void navigateBack() {
 959		if (!createdByViewIntent && xmppConnectionService != null && !xmppConnectionService.isConversationsListEmpty(null)) {
 960			Intent intent = new Intent(this, ConversationsActivity.class);
 961			intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
 962			startActivity(intent);
 963		}
 964		finish();
 965	}
 966
 967	@Override
 968	public void onCreateDialogPositiveClick(Spinner spinner, String name) {
 969		if (!xmppConnectionServiceBound) {
 970			return;
 971		}
 972		final Account account = getSelectedAccount(spinner);
 973		if (account == null) {
 974			return;
 975		}
 976		Intent intent = new Intent(getApplicationContext(), ChooseContactActivity.class);
 977		intent.putExtra(ChooseContactActivity.EXTRA_SHOW_ENTER_JID, false);
 978		intent.putExtra(ChooseContactActivity.EXTRA_SELECT_MULTIPLE, true);
 979		intent.putExtra(ChooseContactActivity.EXTRA_GROUP_CHAT_NAME, name.trim());
 980		intent.putExtra(ChooseContactActivity.EXTRA_ACCOUNT, account.getJid().asBareJid().toString());
 981		intent.putExtra(ChooseContactActivity.EXTRA_TITLE_RES_ID, R.string.choose_participants);
 982		startActivityForResult(intent, REQUEST_CREATE_CONFERENCE);
 983	}
 984
 985	@Override
 986	public void onJoinDialogPositiveClick(Dialog dialog, Spinner spinner, AutoCompleteTextView jid, boolean isBookmarkChecked) {
 987		if (!xmppConnectionServiceBound) {
 988			return;
 989		}
 990		final Account account = getSelectedAccount(spinner);
 991		if (account == null) {
 992			return;
 993		}
 994		final Jid conferenceJid;
 995		try {
 996			conferenceJid = Jid.of(jid.getText().toString());
 997		} catch (final IllegalArgumentException e) {
 998			jid.setError(getString(R.string.invalid_jid));
 999			return;
1000		}
1001
1002		if (isBookmarkChecked) {
1003			if (account.hasBookmarkFor(conferenceJid)) {
1004				jid.setError(getString(R.string.bookmark_already_exists));
1005			} else {
1006				final Bookmark bookmark = new Bookmark(account, conferenceJid.asBareJid());
1007				bookmark.setAutojoin(getBooleanPreference("autojoin", R.bool.autojoin));
1008				String nick = conferenceJid.getResource();
1009				if (nick != null && !nick.isEmpty()) {
1010					bookmark.setNick(nick);
1011				}
1012				account.getBookmarks().add(bookmark);
1013				xmppConnectionService.pushBookmarks(account);
1014				final Conversation conversation = xmppConnectionService
1015						.findOrCreateConversation(account, conferenceJid, true, true, true);
1016				bookmark.setConversation(conversation);
1017				dialog.dismiss();
1018				switchToConversation(conversation);
1019			}
1020		} else {
1021			final Conversation conversation = xmppConnectionService
1022					.findOrCreateConversation(account, conferenceJid, true, true, true);
1023			dialog.dismiss();
1024			switchToConversation(conversation);
1025		}
1026	}
1027
1028	@Override
1029	public void onConversationUpdate() {
1030		refreshUi();
1031	}
1032
1033	@Override
1034	public void onRefresh() {
1035		Log.d(Config.LOGTAG,"user requested to refresh");
1036		if (QuickConversationsService.isQuicksy() && xmppConnectionService != null) {
1037			xmppConnectionService.getQuickConversationsService().considerSyncBackground(true);
1038		}
1039	}
1040
1041
1042	private void setRefreshing(boolean refreshing) {
1043		MyListFragment fragment = (MyListFragment) mListPagerAdapter.getItem(0);
1044		if (fragment != null) {
1045			fragment.setRefreshing(refreshing);
1046		}
1047	}
1048
1049	public static class MyListFragment extends SwipeRefreshListFragment {
1050		private AdapterView.OnItemClickListener mOnItemClickListener;
1051		private int mResContextMenu;
1052
1053		public void setContextMenu(final int res) {
1054			this.mResContextMenu = res;
1055		}
1056
1057		@Override
1058		public void onListItemClick(final ListView l, final View v, final int position, final long id) {
1059			if (mOnItemClickListener != null) {
1060				mOnItemClickListener.onItemClick(l, v, position, id);
1061			}
1062		}
1063
1064		public void setOnListItemClickListener(AdapterView.OnItemClickListener l) {
1065			this.mOnItemClickListener = l;
1066		}
1067
1068		@Override
1069		public void onViewCreated(@NonNull final View view, final Bundle savedInstanceState) {
1070			super.onViewCreated(view, savedInstanceState);
1071			registerForContextMenu(getListView());
1072			getListView().setFastScrollEnabled(true);
1073			getListView().setDivider(null);
1074			getListView().setDividerHeight(0);
1075		}
1076
1077		@Override
1078		public void onCreateContextMenu(final ContextMenu menu, final View v, final ContextMenuInfo menuInfo) {
1079			super.onCreateContextMenu(menu, v, menuInfo);
1080			final StartConversationActivity activity = (StartConversationActivity) getActivity();
1081			if (activity == null) {
1082				return;
1083			}
1084			activity.getMenuInflater().inflate(mResContextMenu, menu);
1085			final AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
1086			if (mResContextMenu == R.menu.conference_context) {
1087				activity.conference_context_id = acmi.position;
1088			} else if (mResContextMenu == R.menu.contact_context) {
1089				activity.contact_context_id = acmi.position;
1090				final Contact contact = (Contact) activity.contacts.get(acmi.position);
1091				final MenuItem blockUnblockItem = menu.findItem(R.id.context_contact_block_unblock);
1092				final MenuItem showContactDetailsItem = menu.findItem(R.id.context_contact_details);
1093				final MenuItem deleteContactMenuItem = menu.findItem(R.id.context_delete_contact);
1094				if (contact.isSelf()) {
1095					showContactDetailsItem.setVisible(false);
1096				}
1097				deleteContactMenuItem.setVisible(contact.showInRoster() && !contact.getOption(Contact.Options.SYNCED_VIA_OTHER));
1098				XmppConnection xmpp = contact.getAccount().getXmppConnection();
1099				if (xmpp != null && xmpp.getFeatures().blocking() && !contact.isSelf()) {
1100					if (contact.isBlocked()) {
1101						blockUnblockItem.setTitle(R.string.unblock_contact);
1102					} else {
1103						blockUnblockItem.setTitle(R.string.block_contact);
1104					}
1105				} else {
1106					blockUnblockItem.setVisible(false);
1107				}
1108			}
1109		}
1110
1111		@Override
1112		public boolean onContextItemSelected(final MenuItem item) {
1113			StartConversationActivity activity = (StartConversationActivity) getActivity();
1114			if (activity == null) {
1115				return true;
1116			}
1117			switch (item.getItemId()) {
1118				case R.id.context_contact_details:
1119					activity.openDetailsForContact();
1120					break;
1121				case R.id.context_show_qr:
1122					activity.showQrForContact();
1123					break;
1124				case R.id.context_contact_block_unblock:
1125					activity.toggleContactBlock();
1126					break;
1127				case R.id.context_delete_contact:
1128					activity.deleteContact();
1129					break;
1130				case R.id.context_join_conference:
1131					activity.openConversationForBookmark();
1132					break;
1133				case R.id.context_share_uri:
1134					activity.shareBookmarkUri();
1135					break;
1136				case R.id.context_delete_conference:
1137					activity.deleteConference();
1138			}
1139			return true;
1140		}
1141	}
1142
1143	public class ListPagerAdapter extends PagerAdapter {
1144		private final FragmentManager fragmentManager;
1145		private final MyListFragment[] fragments;
1146
1147		ListPagerAdapter(FragmentManager fm) {
1148			fragmentManager = fm;
1149			fragments = new MyListFragment[2];
1150		}
1151
1152		public void requestFocus(int pos) {
1153			if (fragments.length > pos) {
1154				fragments[pos].getListView().requestFocus();
1155			}
1156		}
1157
1158		@Override
1159		public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
1160			FragmentTransaction trans = fragmentManager.beginTransaction();
1161			trans.remove(fragments[position]);
1162			trans.commit();
1163			fragments[position] = null;
1164		}
1165
1166		@NonNull
1167		@Override
1168		public Fragment instantiateItem(@NonNull ViewGroup container, int position) {
1169			final Fragment fragment = getItem(position);
1170			final FragmentTransaction trans = fragmentManager.beginTransaction();
1171			trans.add(container.getId(), fragment, "fragment:" + position);
1172			try {
1173				trans.commit();
1174			} catch (IllegalStateException e) {
1175				//ignore
1176			}
1177			return fragment;
1178		}
1179
1180		@Override
1181		public int getCount() {
1182			return fragments.length;
1183		}
1184
1185		@Override
1186		public boolean isViewFromObject(@NonNull View view, @NonNull Object fragment) {
1187			return ((Fragment) fragment).getView() == view;
1188		}
1189
1190		@Nullable
1191		@Override
1192		public CharSequence getPageTitle(int position) {
1193			switch (position) {
1194				case 0:
1195					return getResources().getString(R.string.contacts);
1196				case 1:
1197					return getResources().getString(R.string.conferences);
1198				default:
1199					return super.getPageTitle(position);
1200			}
1201		}
1202
1203		Fragment getItem(int position) {
1204			if (fragments[position] == null) {
1205				final MyListFragment listFragment = new MyListFragment();
1206				if (position == 1) {
1207					listFragment.setListAdapter(mConferenceAdapter);
1208					listFragment.setContextMenu(R.menu.conference_context);
1209					listFragment.setOnListItemClickListener((arg0, arg1, p, arg3) -> openConversationForBookmark(p));
1210				} else {
1211					listFragment.setListAdapter(mContactsAdapter);
1212					listFragment.setContextMenu(R.menu.contact_context);
1213					listFragment.setOnListItemClickListener((arg0, arg1, p, arg3) -> openConversationForContact(p));
1214					if (QuickConversationsService.isQuicksy()) {
1215						listFragment.setOnRefreshListener(StartConversationActivity.this);
1216					}
1217				}
1218				fragments[position] = listFragment;
1219			}
1220			return fragments[position];
1221		}
1222	}
1223
1224	public static void addInviteUri(Intent to, Intent from) {
1225		if (from != null && from.hasExtra(EXTRA_INVITE_URI)) {
1226			to.putExtra(EXTRA_INVITE_URI, from.getStringExtra(EXTRA_INVITE_URI));
1227		}
1228	}
1229
1230	private class Invite extends XmppUri {
1231
1232		public String account;
1233
1234		public Invite(final Uri uri) {
1235			super(uri);
1236		}
1237
1238		public Invite(final String uri) {
1239			super(uri);
1240		}
1241
1242		public Invite(Uri uri, boolean safeSource) {
1243			super(uri, safeSource);
1244		}
1245
1246		boolean invite() {
1247			if (!isJidValid()) {
1248				Toast.makeText(StartConversationActivity.this, R.string.invalid_jid, Toast.LENGTH_SHORT).show();
1249				return false;
1250			}
1251			if (getJid() != null) {
1252				return handleJid(this);
1253			}
1254			return false;
1255		}
1256	}
1257}