GistsAdapter.java

package com.alorma.github.ui.adapter;

import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.text.TextUtils;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import com.alorma.github.R;
import com.alorma.github.sdk.bean.dto.response.Gist;
import com.alorma.github.sdk.bean.dto.response.GistFile;
import com.alorma.github.ui.adapter.base.RecyclerArrayAdapter;
import java.util.TreeMap;

public class GistsAdapter extends RecyclerArrayAdapter<Gist, GistsAdapter.Holder> {

  private GistsAdapterListener gistsAdapterListener;
  private ItemCallback<GistFile> filesCallback;

  public GistsAdapter(LayoutInflater inflater) {
    super(inflater);
  }

  @Override
  public Holder onCreateViewHolder(ViewGroup parent, int viewType) {
    return new Holder(getInflater().inflate(R.layout.row_gist, parent, false));
  }

  @Override
  protected void onBindViewHolder(Holder holder, Gist gist) {
    TreeMap<String, GistFile> filesMap = new TreeMap<>(gist.files);

    GistFile firstFile = filesMap.firstEntry().getValue();

    holder.textFileName.setText(firstFile.filename);

    holder.textNumFiles.setText(holder.itemView.getContext().getString(R.string.num_of_files, gist.files.size()));

    GistSmallFilesAdapter adapter = new GistSmallFilesAdapter(LayoutInflater.from(holder.files.getContext()));

    //adapter.setCallback(filesCallback);

    holder.files.setAdapter(adapter);
    adapter.clear();
    adapter.addAll(gist.files.values());

    if (!TextUtils.isEmpty(gist.description)) {
      holder.textDescription.setVisibility(View.VISIBLE);
      holder.textDescription.setText(gist.description);
    } else {
      holder.textDescription.setVisibility(View.GONE);
    }

    if (gist.isPublic) {
      holder.gistPrivate.setVisibility(View.GONE);
    } else {
      holder.gistPrivate.setVisibility(View.VISIBLE);
    }
  }

  public void setGistsAdapterListener(GistsAdapterListener gistsAdapterListener) {
    this.gistsAdapterListener = gistsAdapterListener;
  }

  public void setFilesCallback(ItemCallback<GistFile> filesCallback) {
    this.filesCallback = filesCallback;
  }

  public interface GistsAdapterListener {
    void onGistSelected(Gist gist);
  }

  public class Holder extends RecyclerView.ViewHolder {
    private final TextView textFileName;
    private final TextView textNumFiles;
    private final TextView textDescription;
    private final TextView gistPrivate;
    private final RecyclerView files;

    public Holder(View itemView) {
      super(itemView);

      textFileName = (TextView) itemView.findViewById(R.id.textFileName);
      textNumFiles = (TextView) itemView.findViewById(R.id.textNumFiles);
      textDescription = (TextView) itemView.findViewById(R.id.textDescription);
      gistPrivate = (TextView) itemView.findViewById(R.id.gistPrivate);

      files = (RecyclerView) itemView.findViewById(R.id.files);

      files.setLayoutManager(new LinearLayoutManager(files.getContext(), LinearLayoutManager.HORIZONTAL, false));

      itemView.setOnClickListener(v -> {
        if (gistsAdapterListener != null) {
          gistsAdapterListener.onGistSelected(getItem(getAdapterPosition()));
        }
      });
    }
  }
}