GitNex-Android-App/app/src/main/java/org/mian/gitnex/adapters/UserGridAdapter.java

package org.mian.gitnex.adapters;

import android.annotation.SuppressLint;
import android.content.Context;
import android.content.Intent;
import android.text.Html;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Filter;
import android.widget.Filterable;
import android.widget.ImageView;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.List;
import org.gitnex.tea4j.v2.models.User;
import org.mian.gitnex.R;
import org.mian.gitnex.activities.ProfileActivity;
import org.mian.gitnex.clients.PicassoService;
import org.mian.gitnex.helpers.AppUtil;
import org.mian.gitnex.helpers.RoundedTransformation;

/**
 * @author M M Arif
 */
public class UserGridAdapter extends BaseAdapter implements Filterable {

	private final List<User> membersList;
	private final Context context;
	private final List<User> membersListFull;

	private class ViewHolder {

		private String userLoginId;

		private final ImageView memberAvatar;
		private final TextView memberName;
		private final TextView userName;

		ViewHolder(View v) {

			memberAvatar = v.findViewById(R.id.userAvatarImageView);
			memberName = v.findViewById(R.id.userNameTv);
			userName = v.findViewById(R.id.userName);

			v.setOnClickListener(
					loginId -> {
						Intent intent = new Intent(context, ProfileActivity.class);
						intent.putExtra("username", userLoginId);
						context.startActivity(intent);
					});

			v.setOnLongClickListener(
					loginId -> {
						AppUtil.copyToClipboard(
								context,
								userLoginId,
								context.getString(R.string.copyLoginIdToClipBoard, userLoginId));
						return true;
					});
		}
	}

	public UserGridAdapter(Context ctx, List<User> membersListMain) {

		this.context = ctx;
		this.membersList = membersListMain;
		membersListFull = new ArrayList<>(membersList);
	}

	@Override
	public int getCount() {
		return membersList.size();
	}

	@Override
	public Object getItem(int position) {
		return null;
	}

	@Override
	public long getItemId(int position) {
		return 0;
	}

	@SuppressLint("InflateParams")
	@Override
	public View getView(int position, View finalView, ViewGroup parent) {

		UserGridAdapter.ViewHolder viewHolder;

		if (finalView == null) {

			finalView = LayoutInflater.from(context).inflate(R.layout.list_users_grid, null);
			viewHolder = new ViewHolder(finalView);
			finalView.setTag(viewHolder);
		} else {

			viewHolder = (UserGridAdapter.ViewHolder) finalView.getTag();
		}

		initData(viewHolder, position);
		return finalView;
	}

	private void initData(UserGridAdapter.ViewHolder viewHolder, int position) {

		User currentItem = membersList.get(position);
		int imgRadius = AppUtil.getPixelsFromDensity(context, 0);

		PicassoService.getInstance(context)
				.get()
				.load(currentItem.getAvatarUrl())
				.placeholder(R.drawable.loader_animated)
				.transform(new RoundedTransformation(imgRadius, 0))
				.resize(120, 120)
				.centerCrop()
				.into(viewHolder.memberAvatar);

		viewHolder.userLoginId = currentItem.getLogin();

		if (!currentItem.getFullName().equals("")) {

			viewHolder.memberName.setText(Html.fromHtml(currentItem.getFullName()));
			viewHolder.userName.setText(
					context.getResources()
							.getString(R.string.usernameWithAt, currentItem.getLogin()));
		} else {

			viewHolder.memberName.setText(currentItem.getLogin());
			viewHolder.userName.setVisibility(View.GONE);
		}
	}

	@Override
	public Filter getFilter() {
		return membersFilter;
	}

	private final Filter membersFilter =
			new Filter() {
				@Override
				protected FilterResults performFiltering(CharSequence constraint) {
					List<User> filteredList = new ArrayList<>();

					if (constraint == null || constraint.length() == 0) {

						filteredList.addAll(membersListFull);
					} else {

						String filterPattern = constraint.toString().toLowerCase().trim();

						for (User item : membersListFull) {
							if (item.getFullName().toLowerCase().contains(filterPattern)
									|| item.getLogin().toLowerCase().contains(filterPattern)) {
								filteredList.add(item);
							}
						}
					}

					FilterResults results = new FilterResults();
					results.values = filteredList;

					return results;
				}

				@Override
				protected void publishResults(CharSequence constraint, FilterResults results) {

					membersList.clear();
					membersList.addAll((List) results.values);
					notifyDataSetChanged();
				}
			};
}