BaseReposListFragment.java

package com.alorma.github.ui.fragment.repos;

import android.content.SharedPreferences;
import android.support.design.widget.Snackbar;
import android.view.LayoutInflater;
import com.alorma.github.GitskariosSettings;
import com.alorma.github.R;
import com.alorma.github.sdk.services.client.GithubListClient;
import com.alorma.github.ui.adapter.repos.ReposAdapter;
import com.alorma.github.ui.fragment.base.LoadingListFragment;
import com.alorma.gitskarios.core.Pair;
import com.mikepenz.octicons_typeface_library.Octicons;
import core.repositories.Repo;
import java.util.Collection;
import java.util.List;
import rx.Observer;
import rx.android.schedulers.AndroidSchedulers;
import rx.schedulers.Schedulers;

public abstract class BaseReposListFragment extends LoadingListFragment<ReposAdapter>
    implements SharedPreferences.OnSharedPreferenceChangeListener, Observer<Pair<List<Repo>, Integer>> {

  private GitskariosSettings settings;

  @Override
  public void onCompleted() {
    stopRefresh();
  }

  @Override
  public void onError(Throwable e) {
    e.printStackTrace();
    Snackbar.make(recyclerView, R.string.error_loading_repos, Snackbar.LENGTH_SHORT).show();
    stopRefresh();
  }

  @Override
  public void onNext(Pair<List<Repo>, Integer> listIntegerPair) {
    setPage(listIntegerPair.second);
    List<Repo> repos = listIntegerPair.first;

    if (repos.size() > 0) {
      hideEmpty();
      if (refreshing || getAdapter() == null) {
        setUpList(repos);
      } else {
        getAdapter().addAll(repos);
      }
    } else if (getAdapter() == null || getAdapter().getItemCount() == 0) {
      setEmpty();
    } else {
      getAdapter().clear();
      setEmpty();
    }
  }

  protected void setUpList(Collection<Repo> repos) {
    settings = new GitskariosSettings(getActivity());
    settings.registerListener(this);

    ReposAdapter reposAdapter = new ReposAdapter(LayoutInflater.from(getActivity()));
    reposAdapter.showOwnerName(showAdapterOwnerName());
    reposAdapter.addAll(repos);

    setAdapter(reposAdapter);
  }

  protected boolean showAdapterOwnerName() {
    return false;
  }

  @Override
  public void setEmpty(boolean withError, int statusCode) {
    super.setEmpty(withError, statusCode);
    if (getAdapter() != null) {
      getAdapter().clear();
    }
  }

  protected void setAction(GithubListClient<List<Repo>> reposClient) {
    startRefresh();
    reposClient.observable().subscribeOn(Schedulers.io()).observeOn(AndroidSchedulers.mainThread()).subscribe(this);
  }

  @Override
  protected Octicons.Icon getNoDataIcon() {
    return Octicons.Icon.oct_repo;
  }

  @Override
  protected int getNoDataText() {
    return 0;
  }

  @Override
  public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
    if (GitskariosSettings.KEY_REPO_SORT.equals(key)) {
      executeRequest();
    }
  }

  @Override
  public void onDestroy() {
    if (settings != null) {
      settings.unregisterListener(this);
    }
    super.onDestroy();
  }
}