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package app.fedilab.android.mastodon.ui.fragment.timeline;
/* Copyright 2022 Thomas Schneider
*
* This file is a part of Fedilab
*
* This program is free software; you can redistribute it and/or modify it under the terms of the
* GNU General Public License as published by the Free Software Foundation; either version 3 of the
* License, or (at your option) any later version.
*
* Fedilab is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details.
*
* You should have received a copy of the GNU General Public License along with Fedilab; if not,
* see <http://www.gnu.org/licenses>. */
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.lifecycle.ViewModelProvider;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import java.util.ArrayList;
import java.util.List;
import app.fedilab.android.R;
import app.fedilab.android.activities.MainActivity;
import app.fedilab.android.databinding.FragmentPaginationBinding;
import app.fedilab.android.mastodon.client.entities.api.Domains;
import app.fedilab.android.mastodon.ui.drawer.DomainBlockAdapter;
import app.fedilab.android.mastodon.viewmodel.mastodon.AccountsVM;
public class FragmentMastodonDomainBlock extends Fragment {
private FragmentPaginationBinding binding;
private DomainBlockAdapter domainBlockAdapter;
private AccountsVM accountsVM;
private List<String> domainList;
private boolean flagLoading;
private String max_id;
public View onCreateView(@NonNull LayoutInflater inflater,
ViewGroup container, Bundle savedInstanceState) {
binding = FragmentPaginationBinding.inflate(inflater, container, false);
return binding.getRoot();
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
binding.loader.setVisibility(View.VISIBLE);
binding.recyclerView.setVisibility(View.GONE);
accountsVM = new ViewModelProvider(FragmentMastodonDomainBlock.this).get(AccountsVM.class);
flagLoading = false;
max_id = null;
domainList = new ArrayList<>();
binding.swipeContainer.setOnRefreshListener(() -> {
binding.swipeContainer.setRefreshing(true);
flagLoading = false;
max_id = null;
int size = domainList.size();
domainList.clear();
domainList = new ArrayList<>();
domainBlockAdapter.notifyItemRangeRemoved(0, size);
router();
});
domainBlockAdapter = new DomainBlockAdapter(domainList);
LinearLayoutManager mLayoutManager = new LinearLayoutManager(requireActivity());
binding.recyclerView.setLayoutManager(mLayoutManager);
binding.recyclerView.setAdapter(domainBlockAdapter);
binding.recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
@Override
public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
int firstVisibleItem = mLayoutManager.findFirstVisibleItemPosition();
if (dy > 0) {
int visibleItemCount = mLayoutManager.getChildCount();
int totalItemCount = mLayoutManager.getItemCount();
if (firstVisibleItem + visibleItemCount == totalItemCount) {
if (!flagLoading) {
flagLoading = true;
binding.loadingNextElements.setVisibility(View.VISIBLE);
router();
}
} else {
binding.loadingNextElements.setVisibility(View.GONE);
}
}
}
});
router();
}
/**
* Router for timelines
*/
private void router() {
if (max_id == null) {
accountsVM.getDomainBlocks(MainActivity.currentInstance, MainActivity.currentToken, null, null, null)
.observe(getViewLifecycleOwner(), this::initializeTagCommonView);
} else {
accountsVM.getDomainBlocks(MainActivity.currentInstance, MainActivity.currentToken, null, max_id, null)
.observe(getViewLifecycleOwner(), this::dealWithPagination);
}
}
public void scrollToTop() {
binding.recyclerView.setAdapter(domainBlockAdapter);
}
/**
* Intialize the view for domains
*
* @param domains List of {@link String}
*/
private void initializeTagCommonView(final Domains domains) {
flagLoading = false;
if (binding == null || !isAdded() || getActivity() == null) {
return;
}
binding.loader.setVisibility(View.GONE);
binding.noAction.setVisibility(View.GONE);
binding.swipeContainer.setRefreshing(false);
binding.swipeContainer.setOnRefreshListener(() -> {
binding.swipeContainer.setRefreshing(true);
flagLoading = false;
max_id = null;
router();
});
if (domains == null || domains.domains == null || domains.domains.size() == 0) {
binding.noAction.setVisibility(View.VISIBLE);
binding.noActionText.setText(R.string.no_accounts);
return;
}
binding.recyclerView.setVisibility(View.VISIBLE);
if (domainBlockAdapter != null && this.domainList != null) {
int size = this.domainList.size();
this.domainList.clear();
this.domainList = new ArrayList<>();
domainBlockAdapter.notifyItemRangeRemoved(0, size);
}
this.domainList = domains.domains;
domainBlockAdapter = new DomainBlockAdapter(this.domainList);
flagLoading = domains.pagination.max_id == null;
LinearLayoutManager mLayoutManager = new LinearLayoutManager(requireActivity());
binding.recyclerView.setLayoutManager(mLayoutManager);
binding.recyclerView.setAdapter(domainBlockAdapter);
max_id = domains.pagination.max_id;
binding.recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
@Override
public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
int firstVisibleItem = mLayoutManager.findFirstVisibleItemPosition();
if (dy > 0) {
int visibleItemCount = mLayoutManager.getChildCount();
int totalItemCount = mLayoutManager.getItemCount();
if (firstVisibleItem + visibleItemCount == totalItemCount) {
if (!flagLoading) {
flagLoading = true;
binding.loadingNextElements.setVisibility(View.VISIBLE);
router();
}
} else {
binding.loadingNextElements.setVisibility(View.GONE);
}
}
}
});
}
private void dealWithPagination(Domains fetched_domains) {
flagLoading = false;
if (binding == null || !isAdded() || getActivity() == null) {
return;
}
binding.loadingNextElements.setVisibility(View.GONE);
if (domainList != null && fetched_domains != null && fetched_domains.domains != null) {
flagLoading = fetched_domains.pagination.max_id == null;
int startId = 0;
//There are some domains present in the timeline
if (domainList.size() > 0) {
startId = domainList.size();
}
int position = domainList.size();
domainList.addAll(fetched_domains.domains);
max_id = fetched_domains.pagination.max_id;
domainBlockAdapter.notifyItemRangeInserted(startId, fetched_domains.domains.size());
} else {
flagLoading = true;
}
}
}
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