GitNex/app/src/main/java/org/mian/gitnex/fragments/LabelsFragment.java

package org.mian.gitnex.fragments;

import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ProgressBar;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.fragment.app.Fragment;
import androidx.lifecycle.ViewModelProvider;
import androidx.recyclerview.widget.DividerItemDecoration;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import androidx.swiperefreshlayout.widget.SwipeRefreshLayout;
import org.mian.gitnex.activities.CreateLabelActivity;
import org.mian.gitnex.adapters.LabelsAdapter;
import org.mian.gitnex.databinding.FragmentLabelsBinding;
import org.mian.gitnex.helpers.contexts.RepositoryContext;
import org.mian.gitnex.viewmodels.LabelsViewModel;

/**
 * Author M M Arif
 */

public class LabelsFragment extends Fragment {

    private ProgressBar mProgressBar;
    private RecyclerView mRecyclerView;
    private LabelsAdapter adapter;
    private TextView noData;

    private RepositoryContext repository;

    public LabelsFragment() {
    }

    public static LabelsFragment newInstance(RepositoryContext repository) {

        LabelsFragment fragment = new LabelsFragment();
        fragment.setArguments(repository.getBundle());
        return fragment;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        repository = RepositoryContext.fromBundle(requireArguments());
    }

    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

	    FragmentLabelsBinding fragmentLabelsBinding = FragmentLabelsBinding.inflate(inflater, container, false);
        setHasOptionsMenu(true);

        final SwipeRefreshLayout swipeRefresh = fragmentLabelsBinding.pullToRefresh;
        noData = fragmentLabelsBinding.noData;

        mRecyclerView = fragmentLabelsBinding.recyclerView;
        mRecyclerView.setHasFixedSize(true);
        mRecyclerView.setLayoutManager(new LinearLayoutManager(getContext()));

        DividerItemDecoration dividerItemDecoration = new DividerItemDecoration(mRecyclerView.getContext(),
                DividerItemDecoration.VERTICAL);
        mRecyclerView.addItemDecoration(dividerItemDecoration);

        mProgressBar = fragmentLabelsBinding.progressBar;

        swipeRefresh.setOnRefreshListener(() -> new Handler(Looper.getMainLooper()).postDelayed(() -> {

            swipeRefresh.setRefreshing(false);
            LabelsViewModel.loadLabelsList(repository.getOwner(), repository.getName(), getContext());
        }, 200));

        fetchDataAsync(repository.getOwner(), repository.getName());

        return fragmentLabelsBinding.getRoot();
    }

    @Override
    public void onResume() {

        super.onResume();

	    if(CreateLabelActivity.refreshLabels) {

            LabelsViewModel.loadLabelsList(repository.getOwner(), repository.getName(), getContext());
	        CreateLabelActivity.refreshLabels = false;
        }
    }

    private void fetchDataAsync(String owner, String repo) {

        LabelsViewModel labelsModel = new ViewModelProvider(this).get(LabelsViewModel.class);

        labelsModel.getLabelsList(owner, repo, getContext()).observe(getViewLifecycleOwner(), labelsListMain -> {

            adapter = new LabelsAdapter(getContext(), labelsListMain, "repo", owner);

            if(adapter.getItemCount() > 0) {

                mRecyclerView.setAdapter(adapter);
                noData.setVisibility(View.GONE);
            }
            else {

                adapter.notifyDataSetChanged();
                mRecyclerView.setAdapter(adapter);
                noData.setVisibility(View.VISIBLE);
            }

            mProgressBar.setVisibility(View.GONE);
        });

    }

}