AlertRecyclerAdapter

package com.finnerds.wealthnow.adapters;

import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.finnerds.wealthnow.R;
import com.finnerds.wealthnow.models.Alert;
import com.finnerds.wealthnow.models.AlertTypes;
import com.finnerds.wealthnow.models.PriceAlert;
import com.finnerds.wealthnow.models.PriceGreaterThanAlert;
import com.finnerds.wealthnow.models.PriceLessThanAlert;

import java.util.List;

public class AlertRecyclerAdapter extends RecyclerView.Adapter<AlertRecyclerAdapter.PriceAlertItemViewHolder> {
    private List<Alert> alerts;
    private AlertRecyclerAdapterListener listener;

    public interface AlertRecyclerAdapterListener {
        public void onAlertDelete(Alert alertToDelete);
    }

    public AlertRecyclerAdapter(List<Alert> alerts, AlertRecyclerAdapterListener listener) {
        this.alerts = alerts;
        this.listener = listener;
    }

    @Override
    public PriceAlertItemViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
        View alertView = LayoutInflater.from(viewGroup.getContext()).
                inflate(R.layout.price_alert_list_item, viewGroup, false);

        return new PriceAlertItemViewHolder(alertView, new BaseAlertViewHolder.OnDeleteClickListener() {
            @Override
            public void onAlertDelete(Button deleteButton) {
                int position = (int) deleteButton.getTag();
                Alert alertToDelete = getItem(position);
                if (listener != null) {
                    listener.onAlertDelete(alertToDelete);
                }
            }

            @Override
            public void onAlertEdit(View view) {
                Toast.makeText(view.getContext(), "ok you are clicking on item", Toast.LENGTH_SHORT).show();
            }
        });
    }

    @Override
    public void onBindViewHolder(PriceAlertItemViewHolder alertViewHolder, int position) {
        Alert alert = alerts.get(position);
        int type = getItemViewType(position);

        alertViewHolder.symbol.setText(alert.symbol);
        alertViewHolder.alertIcon.setVisibility(alert.hasTriggered() ? View.VISIBLE : View.INVISIBLE);
        if (type == AlertTypes.PRICE_GREATER_THAN_ALERT.ordinal() ||
                type == AlertTypes.PRICE_LESS_THAN_ALERT.ordinal()) {
            alertViewHolder.alertType.setText("Price Alert");
            alertViewHolder.property.setText("Price");

            String operator = type == AlertTypes.PRICE_GREATER_THAN_ALERT.ordinal() ? "Greater than" : "Less than";
            alertViewHolder.operator.setText(operator);
            alertViewHolder.target.setText(String.valueOf(((PriceAlert) alert).priceTarget));
            alertViewHolder.currentPrice.setText(String.valueOf(((PriceAlert) alert).currentPrice));
        }
        alertViewHolder.deleteAlert.setTag(position);
    }

    @Override
    public int getItemCount() {
        return this.alerts.size();
    }

    @Override
    public int getItemViewType(int position) {
        Alert alert = getItem(position);
        if (alert instanceof PriceGreaterThanAlert) {
            return AlertTypes.PRICE_GREATER_THAN_ALERT.ordinal();
        } else if (alert instanceof PriceLessThanAlert) {
            return AlertTypes.PRICE_LESS_THAN_ALERT.ordinal();
        }
        return -1;
    }

    private Alert getItem(int position) {
        return alerts.get(position);
    }

    public void addToList(Alert alert, int position) {
        alerts.add(position, alert);
        notifyItemInserted(position);
    }

    public void removeFromList(int position) {
        alerts.remove(position);
        notifyItemRemoved(position);
    }

    public void remove(Alert alert) {
        int position = alerts.indexOf(alert);
        removeFromList(position);
    }

    public void clear() {
        alerts.clear();
        notifyDataSetChanged();
    }

    public void addAll(List<Alert> alerts) {
        this.alerts = alerts;
        notifyDataSetChanged();
    }

    public static abstract class BaseAlertViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
        TextView alertType;
        TextView symbol;
        Button deleteAlert;
        ImageView alertIcon;
        OnDeleteClickListener mListener;

        public BaseAlertViewHolder(View itemView, OnDeleteClickListener listener) {
            super(itemView);
            mListener = listener;
            symbol = (TextView) itemView.findViewById(R.id.tvSymbol);
            alertType = (TextView) itemView.findViewById(R.id.tvAlertType);
            deleteAlert = (Button) itemView.findViewById(R.id.btnDeleteAlert);
            deleteAlert.setOnClickListener(this);
            alertIcon = (ImageView) itemView.findViewById(R.id.ivAlertIcon);
        }

        @Override
        public void onClick(View v) {
            if (v instanceof Button){
                mListener.onAlertDelete((Button) v);
            } else {
                mListener.onAlertEdit(v);
            }
        }

        public static interface OnDeleteClickListener {
            public void onAlertDelete(Button deleteButton);
            public void onAlertEdit(View view);
        }
    }


    public final static class PriceAlertItemViewHolder extends BaseAlertViewHolder {
        TextView property;
        TextView operator;
        TextView target;
        TextView currentPrice;

        public PriceAlertItemViewHolder (View alertView, OnDeleteClickListener listener) {
            super(alertView, listener);
            property = (TextView) alertView.findViewById(R.id.tvProperty);
            operator = (TextView) alertView.findViewById(R.id.tvOperator);
            target = (TextView) alertView.findViewById(R.id.tvTarget);
            currentPrice = (TextView) alertView.findViewById(R.id.tvCurrentPrice);
        }

    }

}