Android/app/src/main/java/com/moiseum/wolnelektury/view/book/list/BooksListFragment.java

   1 package com.moiseum.wolnelektury.view.book.list;
   2
   3 import android.os.Bundle;
   4 import android.support.v7.widget.LinearLayoutManager;
   5 import android.view.Menu;
   6 import android.view.MenuInflater;
   7 import android.view.MenuItem;
   8 import android.view.View;
   9 import android.widget.Button;
  10 import android.widget.ProgressBar;
  11 import android.widget.Toast;
  12
  13 import com.moiseum.wolnelektury.R;
  14 import com.moiseum.wolnelektury.base.mvp.PresenterFragment;
  15 import com.moiseum.wolnelektury.components.ProgressRecyclerView;
  16 import com.moiseum.wolnelektury.components.recycler.EndlessRecyclerOnScrollListener;
  17 import com.moiseum.wolnelektury.connection.models.BookModel;
  18 import com.moiseum.wolnelektury.view.book.BookActivity;
  19 import com.moiseum.wolnelektury.view.book.BookType;
  20 import com.moiseum.wolnelektury.view.main.MainActivity;
  21 import com.moiseum.wolnelektury.view.main.NavigationElement;
  22
  23 import org.greenrobot.eventbus.EventBus;
  24
  25 import java.util.List;
  26
  27 import butterknife.BindView;
  28 import butterknife.OnClick;
  29
  30 /**
  31  * @author golonkos
  32  */
  33
  34 public class BooksListFragment extends PresenterFragment<BooksListPresenter> implements BooksListView {
  35
  36         private static final String PARAM_LIST_TYPE = "PARAM_LIST_TYPE";
  37
  38         @BindView(R.id.rvBooksList)
  39         ProgressRecyclerView<BookModel> rvBooksList;
  40         @BindView(R.id.pbLoadMore)
  41         ProgressBar pbLoadMore;
  42         @BindView(R.id.btnReloadMore)
  43         Button btnReloadMore;
  44
  45         public static BooksListFragment newInstance(BookListType type) {
  46                 BooksListFragment fragment = new BooksListFragment();
  47                 Bundle args = new Bundle(1);
  48                 args.putSerializable(PARAM_LIST_TYPE, type);
  49                 fragment.setArguments(args);
  50                 return fragment;
  51         }
  52
  53         private BookListType type;
  54         private BooksListAdapter adapter;
  55
  56         private EndlessRecyclerOnScrollListener rvBooksScrollListener = new EndlessRecyclerOnScrollListener() {
  57                 @Override
  58                 public void onLoadMore() {
  59                         if (adapter.getItemCount() > 0) {
  60                                 getPresenter().loadMoreBooks();
  61                         }
  62                 }
  63         };
  64
  65         @Override
  66         public void onCreate(Bundle savedInstanceState) {
  67                 if (getArguments() == null || getArguments().getSerializable(PARAM_LIST_TYPE) == null) {
  68                         throw new IllegalStateException("Missing list type parameter.");
  69                 }
  70                 type = (BookListType) getArguments().getSerializable(PARAM_LIST_TYPE);
  71                 super.onCreate(savedInstanceState);
  72         }
  73
  74         @Override
  75         protected BooksListPresenter createPresenter() {
  76                 return new BooksListPresenter(this, type);
  77         }
  78
  79         @Override
  80         public int getLayoutResourceId() {
  81                 return R.layout.fragment_books_list;
  82         }
  83
  84         @Override
  85         public void prepareView(View view, Bundle savedInstanceState) {
  86                 LinearLayoutManager layoutManager = new LinearLayoutManager(getContext());
  87                 rvBooksList.setLayoutManager(layoutManager);
  88                 rvBooksList.addOnScrollListener(rvBooksScrollListener);
  89
  90                 adapter = new BooksListAdapter(getContext());
  91                 adapter.setOnItemClickListener((item, view1, position) -> getPresenter().onBookClicked(item, position));
  92                 if (type.isDeletable()) {
  93                         adapter.setOnDeleteListener((book, position) -> {
  94                                 getPresenter().onBookDeleteClicked(book);
  95                                 adapter.removeItem(position);
  96                                 Toast.makeText(getContext() ,getString(R.string.book_deleted_message), Toast.LENGTH_SHORT).show();
  97                         });
  98                 }
  99                 rvBooksList.setAdapter(adapter);
 100                 rvBooksList.setEmptyText(type.getEmptyListText());
 101                 if (type.isSearchable()) {
 102                         setHasOptionsMenu(true);
 103                 }
 104         }
 105
 106         @Override
 107         public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
 108                 super.onCreateOptionsMenu(menu, inflater);
 109                 if (type.isSearchable()) {
 110                         inflater.inflate(R.menu.menu_searchable, menu);
 111                 }
 112         }
 113
 114         @Override
 115         public boolean onOptionsItemSelected(MenuItem item) {
 116                 if (item.getItemId() == R.id.action_search) {
 117                         EventBus.getDefault().post(new MainActivity.ChangeNavigationEvent(NavigationElement.SEARCH));
 118                 }
 119                 return super.onOptionsItemSelected(item);
 120         }
 121
 122         @Override
 123         protected String getNameForTracker() {
 124                 return type.getNameForTracker();
 125         }
 126
 127         @Override
 128         public void setData(List<BookModel> books) {
 129                 if (adapter.getItemCount() == 0) {
 130                         rvBooksList.setItems(books);
 131                 } else {
 132                         rvBooksList.addItems(books);
 133                 }
 134         }
 135
 136         @Override
 137         public void clearList() {
 138                 adapter.clear();
 139         }
 140
 141         @Override
 142         public void setProgressVisible(boolean visible) {
 143                 if (adapter.getItemCount() == 0) {
 144                         rvBooksList.setProgressVisible(visible);
 145                 } else {
 146                         pbLoadMore.setVisibility(visible ? View.VISIBLE : View.GONE);
 147                 }
 148         }
 149
 150         @Override
 151         public void showError(Exception e) {
 152                 Toast.makeText(getContext(), R.string.loading_results_failed, Toast.LENGTH_SHORT).show();
 153                 if (adapter.getItemCount() != 0) {
 154                         btnReloadMore.setVisibility(View.VISIBLE);
 155                 } else {
 156                         rvBooksList.showRetryButton(() -> getPresenter().reloadBooks());
 157                 }
 158         }
 159
 160         @Override
 161         public void openBookDetailsView(String bookSlug) {
 162                 startActivity(new BookActivity.BookIntent(bookSlug, BookType.TYPE_DEFAULT, getActivity()));
 163         }
 164
 165         @Override
 166         public void updateEmptyViewVisibility() {
 167                 rvBooksList.updateEmptyViewVisibility();
 168         }
 169
 170         @Override
 171         public void updateFavouriteState(boolean state, Integer clickedPosition) {
 172                 if (clickedPosition != null) {
 173                         adapter.getItem(clickedPosition).setLiked(state);
 174                         adapter.notifyDataSetChanged();
 175                 }
 176         }
 177
 178         @OnClick(R.id.btnReloadMore)
 179         public void onReloadMoreClicked() {
 180                 btnReloadMore.setVisibility(View.GONE);
 181                 pbLoadMore.setVisibility(View.VISIBLE);
 182                 getPresenter().loadMoreBooks();
 183         }
 184 }