1/*
2 * Copyright (c) 2018, Daniel Gultsch All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without modification,
5 * are permitted provided that the following conditions are met:
6 *
7 * 1. Redistributions of source code must retain the above copyright notice, this
8 * list of conditions and the following disclaimer.
9 *
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation and/or
12 * other materials provided with the distribution.
13 *
14 * 3. Neither the name of the copyright holder nor the names of its contributors
15 * may be used to endorse or promote products derived from this software without
16 * specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
22 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
25 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30package eu.siacs.conversations.ui;
31
32import static androidx.recyclerview.widget.ItemTouchHelper.LEFT;
33import static androidx.recyclerview.widget.ItemTouchHelper.RIGHT;
34
35import android.app.Activity;
36import android.app.Fragment;
37import android.content.Intent;
38import android.graphics.Canvas;
39import android.os.Bundle;
40import android.util.Log;
41import android.view.ContextMenu;
42import android.view.LayoutInflater;
43import android.view.Menu;
44import android.view.MenuInflater;
45import android.view.MenuItem;
46import android.view.View;
47import android.view.ViewGroup;
48import android.widget.AdapterView.AdapterContextMenuInfo;
49import android.widget.PopupMenu;
50import android.widget.Toast;
51import androidx.annotation.NonNull;
52import androidx.databinding.DataBindingUtil;
53import androidx.recyclerview.widget.ItemTouchHelper;
54import androidx.recyclerview.widget.LinearLayoutManager;
55import androidx.recyclerview.widget.RecyclerView;
56import com.google.android.material.dialog.MaterialAlertDialogBuilder;
57import com.google.android.material.snackbar.Snackbar;
58import com.google.common.base.Optional;
59import com.google.common.collect.Collections2;
60import eu.siacs.conversations.BuildConfig;
61import eu.siacs.conversations.Config;
62import eu.siacs.conversations.R;
63import eu.siacs.conversations.databinding.FragmentConversationsOverviewBinding;
64import eu.siacs.conversations.entities.Account;
65import eu.siacs.conversations.entities.Conversation;
66import eu.siacs.conversations.entities.Conversational;
67import eu.siacs.conversations.services.XmppConnectionService;
68import eu.siacs.conversations.services.QuickConversationsService;
69import eu.siacs.conversations.ui.adapter.ConversationAdapter;
70import eu.siacs.conversations.ui.interfaces.OnConversationArchived;
71import eu.siacs.conversations.ui.interfaces.OnConversationSelected;
72import eu.siacs.conversations.ui.util.MenuDoubleTabUtil;
73import eu.siacs.conversations.ui.util.PendingActionHelper;
74import eu.siacs.conversations.ui.util.PendingItem;
75import eu.siacs.conversations.ui.util.ScrollState;
76import eu.siacs.conversations.utils.AccountUtils;
77import eu.siacs.conversations.utils.EasyOnboardingInvite;
78import eu.siacs.conversations.utils.ThemeHelper;
79import eu.siacs.conversations.xmpp.jingle.OngoingRtpSession;
80
81import static androidx.recyclerview.widget.ItemTouchHelper.LEFT;
82import static androidx.recyclerview.widget.ItemTouchHelper.RIGHT;
83
84import java.util.ArrayList;
85import java.util.List;
86import java.util.concurrent.atomic.AtomicReference;
87
88public class ConversationsOverviewFragment extends XmppFragment {
89
90 private static final String STATE_SCROLL_POSITION =
91 ConversationsOverviewFragment.class.getName() + ".scroll_state";
92
93 private final List<Conversation> conversations = new ArrayList<>();
94 private final PendingItem<Conversation> swipedConversation = new PendingItem<>();
95 private final PendingItem<ScrollState> pendingScrollState = new PendingItem<>();
96 private FragmentConversationsOverviewBinding binding;
97 private ConversationAdapter conversationsAdapter;
98 private XmppActivity activity;
99 private final PendingActionHelper pendingActionHelper = new PendingActionHelper();
100
101 private final ItemTouchHelper.SimpleCallback callback =
102 new ItemTouchHelper.SimpleCallback(0, LEFT | RIGHT) {
103 @Override
104 public boolean onMove(
105 @NonNull RecyclerView recyclerView,
106 @NonNull RecyclerView.ViewHolder viewHolder,
107 @NonNull RecyclerView.ViewHolder target) {
108 return false;
109 }
110
111 @Override
112 public void onChildDraw(
113 @NonNull Canvas c,
114 @NonNull RecyclerView recyclerView,
115 @NonNull RecyclerView.ViewHolder viewHolder,
116 float dX,
117 float dY,
118 int actionState,
119 boolean isCurrentlyActive) {
120 if (viewHolder
121 instanceof
122 ConversationAdapter.ConversationViewHolder conversationViewHolder) {
123 getDefaultUIUtil()
124 .onDraw(
125 c,
126 recyclerView,
127 conversationViewHolder.binding.frame,
128 dX,
129 dY,
130 actionState,
131 isCurrentlyActive);
132 }
133 }
134
135 @Override
136 public void clearView(
137 @NonNull RecyclerView recyclerView,
138 @NonNull RecyclerView.ViewHolder viewHolder) {
139 if (viewHolder
140 instanceof
141 ConversationAdapter.ConversationViewHolder conversationViewHolder) {
142 getDefaultUIUtil().clearView(conversationViewHolder.binding.frame);
143 }
144 }
145
146 @Override
147 public float getSwipeEscapeVelocity(final float defaultEscapeVelocity) {
148 return 32 * defaultEscapeVelocity;
149 }
150
151 @Override
152 public void onSwiped(
153 final RecyclerView.ViewHolder viewHolder, final int direction) {
154 pendingActionHelper.execute();
155 int position = viewHolder.getLayoutPosition();
156 try {
157 swipedConversation.push(conversations.get(position));
158 } catch (IndexOutOfBoundsException e) {
159 return;
160 }
161 conversationsAdapter.remove(swipedConversation.peek(), position);
162 activity.xmppConnectionService.markRead(swipedConversation.peek());
163
164 if (position == 0 && conversationsAdapter.getItemCount() == 0) {
165 final Conversation c = swipedConversation.pop();
166 activity.xmppConnectionService.archiveConversation(c);
167 return;
168 }
169 final boolean formerlySelected =
170 ConversationFragment.getConversation(getActivity())
171 == swipedConversation.peek();
172 if (activity instanceof OnConversationArchived) {
173 ((OnConversationArchived) activity)
174 .onConversationArchived(swipedConversation.peek());
175 }
176 final Conversation c = swipedConversation.peek();
177 final int title;
178 if (c.getMode() == Conversational.MODE_MULTI) {
179 if (c.getMucOptions().isPrivateAndNonAnonymous()) {
180 title = R.string.title_undo_swipe_out_group_chat;
181 } else {
182 title = R.string.title_undo_swipe_out_channel;
183 }
184 } else {
185 title = R.string.title_undo_swipe_out_chat;
186 }
187
188 final Snackbar snackbar =
189 Snackbar.make(binding.list, title, 5000)
190 .setAction(
191 R.string.undo,
192 v -> {
193 pendingActionHelper.undo();
194 Conversation conversation =
195 swipedConversation.pop();
196 conversationsAdapter.insert(conversation, position);
197 if (formerlySelected) {
198 if (activity
199 instanceof OnConversationSelected) {
200 ((OnConversationSelected) activity)
201 .onConversationSelected(c);
202 }
203 }
204 LinearLayoutManager layoutManager =
205 (LinearLayoutManager)
206 binding.list.getLayoutManager();
207 if (position
208 > layoutManager
209 .findLastVisibleItemPosition()) {
210 binding.list.smoothScrollToPosition(position);
211 }
212 })
213 .addCallback(
214 new Snackbar.Callback() {
215 @Override
216 public void onDismissed(
217 Snackbar transientBottomBar, int event) {
218 switch (event) {
219 case DISMISS_EVENT_SWIPE:
220 case DISMISS_EVENT_TIMEOUT:
221 pendingActionHelper.execute();
222 break;
223 }
224 }
225 });
226
227 pendingActionHelper.push(
228 () -> {
229 if (snackbar.isShownOrQueued()) {
230 snackbar.dismiss();
231 }
232 final Conversation conversation = swipedConversation.pop();
233 if (conversation != null) {
234 if (!conversation.isRead(activity.xmppConnectionService)
235 && conversation.getMode() == Conversation.MODE_SINGLE) {
236 return;
237 }
238 activity.xmppConnectionService.archiveConversation(c);
239 }
240 });
241 snackbar.show();
242 }
243 };
244
245 private ItemTouchHelper touchHelper;
246
247 public static Conversation getSuggestion(Activity activity) {
248 final Conversation exception;
249 Fragment fragment = activity.getFragmentManager().findFragmentById(R.id.main_fragment);
250 if (fragment instanceof ConversationsOverviewFragment) {
251 exception = ((ConversationsOverviewFragment) fragment).swipedConversation.peek();
252 } else {
253 exception = null;
254 }
255 return getSuggestion(activity, exception);
256 }
257
258 public static Conversation getSuggestion(Activity activity, Conversation exception) {
259 Fragment fragment = activity.getFragmentManager().findFragmentById(R.id.main_fragment);
260 if (fragment instanceof ConversationsOverviewFragment) {
261 List<Conversation> conversations =
262 ((ConversationsOverviewFragment) fragment).conversations;
263 if (conversations.size() > 0) {
264 Conversation suggestion = conversations.get(0);
265 if (suggestion == exception) {
266 if (conversations.size() > 1) {
267 return conversations.get(1);
268 }
269 } else {
270 return suggestion;
271 }
272 }
273 }
274 return null;
275 }
276
277 @Override
278 public void onActivityCreated(Bundle savedInstanceState) {
279 super.onActivityCreated(savedInstanceState);
280 if (savedInstanceState == null) {
281 return;
282 }
283 pendingScrollState.push(savedInstanceState.getParcelable(STATE_SCROLL_POSITION));
284 }
285
286 @Override
287 public void onAttach(Activity activity) {
288 super.onAttach(activity);
289 if (activity instanceof XmppActivity) {
290 this.activity = (XmppActivity) activity;
291 } else {
292 throw new IllegalStateException(
293 "Trying to attach fragment to activity that is not an XmppActivity");
294 }
295 }
296
297 @Override
298 public void onDestroyView() {
299 Log.d(Config.LOGTAG, "ConversationsOverviewFragment.onDestroyView()");
300 super.onDestroyView();
301 this.binding = null;
302 this.conversationsAdapter = null;
303 this.touchHelper = null;
304 }
305
306 @Override
307 public void onDestroy() {
308 Log.d(Config.LOGTAG, "ConversationsOverviewFragment.onDestroy()");
309 super.onDestroy();
310 }
311
312 @Override
313 public void onPause() {
314 Log.d(Config.LOGTAG, "ConversationsOverviewFragment.onPause()");
315 pendingActionHelper.execute();
316 super.onPause();
317 }
318
319 @Override
320 public void onDetach() {
321 super.onDetach();
322 this.activity = null;
323 }
324
325 @Override
326 public void onCreate(Bundle savedInstanceState) {
327 super.onCreate(savedInstanceState);
328 setHasOptionsMenu(true);
329 }
330
331 @Override
332 public View onCreateView(
333 final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
334 this.binding =
335 DataBindingUtil.inflate(
336 inflater, R.layout.fragment_conversations_overview, container, false);
337 this.binding.fab.setOnClickListener(
338 (view) -> activity.launchStartConversation()
339 );
340
341 this.conversationsAdapter = new ConversationAdapter(this.activity, this.conversations);
342 this.conversationsAdapter.setConversationClickListener(
343 (view, conversation) -> {
344 if (activity instanceof OnConversationSelected) {
345 ((OnConversationSelected) activity).onConversationSelected(conversation);
346 } else {
347 Log.w(
348 ConversationsOverviewFragment.class.getCanonicalName(),
349 "Activity does not implement OnConversationSelected");
350 }
351 });
352 this.binding.list.setAdapter(this.conversationsAdapter);
353 this.binding.list.setLayoutManager(
354 new LinearLayoutManager(getActivity(), LinearLayoutManager.VERTICAL, false));
355 registerForContextMenu(this.binding.list);
356 this.binding.list.addOnScrollListener(ExtendedFabSizeChanger.of(binding.fab));
357 this.touchHelper = new ItemTouchHelper(this.callback);
358 this.touchHelper.attachToRecyclerView(this.binding.list);
359 return binding.getRoot();
360 }
361
362 @Override
363 public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
364 menuInflater.inflate(R.menu.fragment_conversations_overview, menu);
365 AccountUtils.showHideMenuItems(menu);
366 final MenuItem easyOnboardInvite = menu.findItem(R.id.action_easy_invite);
367 easyOnboardInvite.setVisible(EasyOnboardingInvite.anyHasSupport(activity == null ? null : activity.xmppConnectionService));
368 if (activity != null && activity.xmppConnectionService != null && activity.xmppConnectionService.isOnboarding()) {
369 final MenuItem manageAccounts = menu.findItem(R.id.action_accounts);
370 if (manageAccounts != null) manageAccounts.setVisible(false);
371
372 final MenuItem settings = menu.findItem(R.id.action_settings);
373 if (settings != null) settings.setVisible(false);
374 }
375 }
376
377 @Override
378 public void onCreateContextMenu(ContextMenu menu, View view, ContextMenu.ContextMenuInfo menuInfo) {
379 activity.getMenuInflater().inflate(R.menu.conversations, menu);
380
381 final MenuItem menuMucDetails = menu.findItem(R.id.action_muc_details);
382 final MenuItem menuContactDetails = menu.findItem(R.id.action_contact_details);
383 final MenuItem menuMute = menu.findItem(R.id.action_mute);
384 final MenuItem menuUnmute = menu.findItem(R.id.action_unmute);
385 final MenuItem menuOngoingCall = menu.findItem(R.id.action_ongoing_call);
386 final MenuItem menuTogglePinned = menu.findItem(R.id.action_toggle_pinned);
387 final MenuItem menuArchiveChat = menu.findItem(R.id.action_archive);
388
389 if (menuInfo == null) return;
390 int pos = ((AdapterContextMenuInfo) menuInfo).position;
391 if (pos < 0) return;
392 Conversation conversation = conversations.get(pos);
393 if (conversation != null) {
394 if (conversation.getMode() == Conversation.MODE_MULTI) {
395 menuContactDetails.setVisible(false);
396 menuMucDetails.setTitle(conversation.getMucOptions().isPrivateAndNonAnonymous() ? R.string.action_muc_details : R.string.channel_details);
397 menuOngoingCall.setVisible(false);
398 menuArchiveChat.setTitle("Leave " + (conversation.getMucOptions().isPrivateAndNonAnonymous() ? "group chat" : "Channel"));
399 } else {
400 final XmppConnectionService service = activity == null ? null : activity.xmppConnectionService;
401 final Optional<OngoingRtpSession> ongoingRtpSession = service == null ? Optional.absent() : service.getJingleConnectionManager().getOngoingRtpConnection(conversation.getContact());
402 if (ongoingRtpSession.isPresent()) {
403 menuOngoingCall.setVisible(true);
404 } else {
405 menuOngoingCall.setVisible(false);
406 }
407 menuContactDetails.setVisible(!conversation.withSelf());
408 menuMucDetails.setVisible(false);
409 menuArchiveChat.setTitle(R.string.action_archive_chat);
410 }
411 if (conversation.isMuted()) {
412 menuMute.setVisible(false);
413 } else {
414 menuUnmute.setVisible(false);
415 }
416 if (conversation.getBooleanAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, false)) {
417 menuTogglePinned.setTitle(R.string.remove_from_favorites);
418 } else {
419 menuTogglePinned.setTitle(R.string.add_to_favorites);
420 }
421 }
422 super.onCreateContextMenu(menu, view, menuInfo);
423 }
424
425 @Override
426 public boolean onContextItemSelected(MenuItem item) {
427 final var info = ((AdapterContextMenuInfo) item.getMenuInfo());
428 if (info == null) return false;
429
430 int pos = info.position;
431 if (conversations == null || conversations.size() <= pos || pos < 0) return false;
432
433 Conversation conversation = conversations.get(pos);
434 ConversationFragment fragment = new ConversationFragment();
435 fragment.setHasOptionsMenu(false);
436 fragment.onAttach(activity);
437 fragment.reInit(conversation, null);
438 boolean r = fragment.onOptionsItemSelected(item);
439 refresh();
440 return r;
441 }
442
443 @Override
444 public void onBackendConnected() {
445 refresh();
446 }
447
448 private void setupSwipe() {
449 if (this.touchHelper == null && (activity.xmppConnectionService == null || !activity.xmppConnectionService.isOnboarding())) {
450 this.touchHelper = new ItemTouchHelper(this.callback);
451 this.touchHelper.attachToRecyclerView(this.binding.list);
452 }
453 }
454
455 @Override
456 public void onSaveInstanceState(Bundle bundle) {
457 super.onSaveInstanceState(bundle);
458 ScrollState scrollState = getScrollState();
459 if (scrollState != null) {
460 bundle.putParcelable(STATE_SCROLL_POSITION, scrollState);
461 }
462 }
463
464 private ScrollState getScrollState() {
465 if (this.binding == null) {
466 return null;
467 }
468 if (this.binding.list.getLayoutManager()
469 instanceof LinearLayoutManager linearLayoutManager) {
470 final int position = linearLayoutManager.findFirstVisibleItemPosition();
471 final View view = this.binding.list.getChildAt(0);
472 if (view != null) {
473 return new ScrollState(position, view.getTop());
474 } else {
475 return new ScrollState(position, 0);
476 }
477 }
478 return null;
479 }
480
481 @Override
482 public void onStart() {
483 super.onStart();
484 Log.d(Config.LOGTAG, "ConversationsOverviewFragment.onStart()");
485 if (activity.xmppConnectionService != null) {
486 refresh();
487 }
488 }
489
490 @Override
491 public void onResume() {
492 super.onResume();
493 Log.d(Config.LOGTAG, "ConversationsOverviewFragment.onResume()");
494 }
495
496 @Override
497 public boolean onOptionsItemSelected(final MenuItem item) {
498 if (MenuDoubleTabUtil.shouldIgnoreTap()) {
499 return false;
500 }
501 switch (item.getItemId()) {
502 case R.id.action_search:
503 startActivity(new Intent(getActivity(), SearchActivity.class));
504 return true;
505 case R.id.action_easy_invite:
506 selectAccountToStartEasyInvite();
507 return true;
508 }
509 return super.onOptionsItemSelected(item);
510 }
511
512 private void selectAccountToStartEasyInvite() {
513 final List<Account> accounts =
514 EasyOnboardingInvite.getSupportingAccounts(activity.xmppConnectionService);
515 if (accounts.isEmpty()) {
516 // This can technically happen if opening the menu item races with accounts reconnecting
517 // or something
518 Toast.makeText(
519 getActivity(),
520 R.string.no_active_accounts_support_this,
521 Toast.LENGTH_LONG)
522 .show();
523 } else if (accounts.size() == 1) {
524 openEasyInviteScreen(accounts.get(0));
525 } else {
526 final AtomicReference<Account> selectedAccount = new AtomicReference<>(accounts.get(0));
527 final MaterialAlertDialogBuilder alertDialogBuilder =
528 new MaterialAlertDialogBuilder(activity);
529 alertDialogBuilder.setTitle(R.string.choose_account);
530 final String[] asStrings =
531 Collections2.transform(accounts, a -> a.getJid().asBareJid().toString())
532 .toArray(new String[0]);
533 alertDialogBuilder.setSingleChoiceItems(
534 asStrings, 0, (dialog, which) -> selectedAccount.set(accounts.get(which)));
535 alertDialogBuilder.setNegativeButton(R.string.cancel, null);
536 alertDialogBuilder.setPositiveButton(
537 R.string.ok, (dialog, which) -> openEasyInviteScreen(selectedAccount.get()));
538 alertDialogBuilder.create().show();
539 }
540 }
541
542 private void openEasyInviteScreen(final Account account) {
543 EasyOnboardingInviteActivity.launch(account, activity);
544 }
545
546 @Override
547 protected void refresh() {
548 if (binding == null || this.activity == null) {
549 Log.d(Config.LOGTAG,"ConversationsOverviewFragment.refresh() skipped updated because view binding or activity was null");
550 return;
551 }
552 this.activity.populateWithOrderedConversations(this.conversations);
553 Conversation removed = this.swipedConversation.peek();
554 if (removed != null) {
555 if (removed.isRead(activity == null ? null : activity.xmppConnectionService)) {
556 this.conversations.remove(removed);
557 } else {
558 pendingActionHelper.execute();
559 }
560 }
561 this.conversationsAdapter.notifyDataSetChanged();
562 final var scrollState = pendingScrollState.pop();
563 if (scrollState != null) {
564 setScrollPosition(scrollState);
565 }
566
567 if (activity.xmppConnectionService != null && activity.xmppConnectionService.isOnboarding()) {
568 binding.fab.setVisibility(View.GONE);
569
570 if (this.conversations.size() == 1) {
571 if (activity instanceof OnConversationSelected) {
572 ((OnConversationSelected) activity).onConversationSelected(this.conversations.get(0));
573 } else {
574 Log.w(ConversationsOverviewFragment.class.getCanonicalName(), "Activity does not implement OnConversationSelected");
575 }
576 }
577 } else {
578 binding.fab.setVisibility(View.VISIBLE);
579 }
580 setupSwipe();
581
582 if (activity.xmppConnectionService == null || binding == null || binding.overviewSnackbar == null) return;
583 binding.overviewSnackbar.setVisibility(View.GONE);
584 for (final var account : activity.xmppConnectionService.getAccounts()) {
585 if (activity.getPreferences().getBoolean("no_mam_pref_warn:" + account.getUuid(), false)) continue;
586 if (account.mamPrefs() != null && !"always".equals(account.mamPrefs().getAttribute("default"))) {
587 binding.overviewSnackbar.setVisibility(View.VISIBLE);
588 binding.overviewSnackbarMessage.setText("Your account " + account.getJid().asBareJid().toString() + " does not have archiving fully enabled. This may result in missed messages if you use multiple devices or apps.");
589 binding.overviewSnackbarAction.setOnClickListener((v) -> {
590 final var prefs = account.mamPrefs();
591 prefs.setAttribute("default", "always");
592 activity.xmppConnectionService.pushMamPreferences(account, prefs);
593 refresh();
594 });
595
596 binding.overviewSnackbarAction.setOnLongClickListener((v) -> {
597 PopupMenu popupMenu = new PopupMenu(getActivity(), v);
598 popupMenu.inflate(R.menu.mam_pref_fix);
599 popupMenu.setOnMenuItemClickListener(menuItem -> {
600 switch (menuItem.getItemId()) {
601 case R.id.ignore:
602 final var editor = activity.getPreferences().edit();
603 editor.putBoolean("no_mam_pref_warn:" + account.getUuid(), true).apply();
604 editor.apply();
605 refresh();
606 return true;
607 }
608 return true;
609 });
610 popupMenu.show();
611 return true;
612 });
613 break;
614 }
615 }
616 }
617
618 private void setScrollPosition(@NonNull final ScrollState scrollPosition) {
619 if (binding.list.getLayoutManager() instanceof LinearLayoutManager linearLayoutManager) {
620 linearLayoutManager.scrollToPositionWithOffset(
621 scrollPosition.position, scrollPosition.offset);
622 if (scrollPosition.position > 0) {
623 binding.fab.shrink();
624 } else {
625 binding.fab.extend();
626 }
627 binding.fab.clearAnimation();
628 }
629 }
630}