RepoContributorsFragment.java

package com.fastaccess.ui.modules.repos.code.contributors;

import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.annotation.StringRes;
import android.support.v4.widget.SwipeRefreshLayout;
import android.view.View;

import com.fastaccess.R;
import com.fastaccess.data.dao.model.User;
import com.fastaccess.helper.BundleConstant;
import com.fastaccess.helper.Bundler;
import com.fastaccess.provider.rest.loadmore.OnLoadMore;
import com.fastaccess.ui.adapter.UsersAdapter;
import com.fastaccess.ui.base.BaseFragment;
import com.fastaccess.ui.widgets.StateLayout;
import com.fastaccess.ui.widgets.recyclerview.DynamicRecyclerView;

import java.util.List;

import butterknife.BindView;

/**
 * Created by Kosh on 03 Dec 2016, 3:56 PM
 */

public class RepoContributorsFragment extends BaseFragment<RepoContributorsMvp.View, RepoContributorsPresenter> implements RepoContributorsMvp.View {

    @BindView(R.id.recycler) DynamicRecyclerView recycler;
    @BindView(R.id.refresh) SwipeRefreshLayout refresh;
    @BindView(R.id.stateLayout) StateLayout stateLayout;
    private OnLoadMore onLoadMore;
    private UsersAdapter adapter;

    public static RepoContributorsFragment newInstance(@NonNull String repoId, @NonNull String login) {
        RepoContributorsFragment view = new RepoContributorsFragment();
        view.setArguments(Bundler.start()
                .put(BundleConstant.ID, repoId)
                .put(BundleConstant.EXTRA, login)
                .end());
        return view;
    }

    @Override public void onNotifyAdapter(@Nullable List<User> items, int page) {
        hideProgress();
        if (items == null || items.isEmpty()) {
            adapter.clear();
            return;
        }
        if (page <= 1) {
            adapter.insertItems(items);
        } else {
            adapter.addItems(items);
        }
    }

    @Override protected int fragmentLayout() {
        return R.layout.small_grid_refresh_list;
    }

    @Override protected void onFragmentCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
        if (getArguments() == null) {
            throw new NullPointerException("Bundle is null, therefore, issues can't be proceeded.");
        }
        stateLayout.setEmptyText(R.string.no_contributors);
        stateLayout.setOnReloadListener(this);
        refresh.setOnRefreshListener(this);
        recycler.setEmptyView(stateLayout, refresh);
        recycler.addKeyLineDivider();
        adapter = new UsersAdapter(getPresenter().getUsers(), true);
        adapter.setListener(getPresenter());
        getLoadMore().setCurrent_page(getPresenter().getCurrentPage(), getPresenter().getPreviousTotal());
        recycler.setAdapter(adapter);
        recycler.addOnScrollListener(getLoadMore());
        if (savedInstanceState == null) {
            getPresenter().onFragmentCreated(getArguments());
        } else if (getPresenter().getUsers().isEmpty() && !getPresenter().isApiCalled()) {
            onRefresh();
        }
    }

    @NonNull @Override public RepoContributorsPresenter providePresenter() {
        return new RepoContributorsPresenter();
    }

    @Override public void showProgress(@StringRes int resId) {

refresh.setRefreshing(true);

        stateLayout.showProgress();
    }

    @Override public void hideProgress() {
        refresh.setRefreshing(false);
        stateLayout.hideProgress();
    }

    @Override public void showErrorMessage(@NonNull String message) {
        showReload();
        super.showErrorMessage(message);
    }

    @Override public void showMessage(int titleRes, int msgRes) {
        showReload();
        super.showMessage(titleRes, msgRes);
    }

    @SuppressWarnings("unchecked") @NonNull @Override public OnLoadMore getLoadMore() {
        if (onLoadMore == null) {
            onLoadMore = new OnLoadMore(getPresenter());
        }
        return onLoadMore;
    }

    @Override public void onRefresh() {
        getPresenter().onCallApi(1, getArguments().getString(BundleConstant.EXTRA));
    }

    @Override public void onClick(View view) {
        onRefresh();
    }

    private void showReload() {
        hideProgress();
        stateLayout.showReload(adapter.getItemCount());
    }
}