package com.mcivicm.editablespinner;

import android.content.Context;
import android.support.annotation.NonNull;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;

import java.util.List;

/**
 * 可编辑下拉框适配器
 */

public abstract class EditableSpinnerAdapter<T> extends BaseAdapter {
    private List<T> list;
    private Context context;
    private int itemLayout;

    public EditableSpinnerAdapter(Context context, List<T> list, int itemLayout) {
        this.context = context;
        this.list = list;
        this.itemLayout = itemLayout;
    }

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

    @Override
    public T getItem(int position) {
        return list.get(position);
    }

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

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        if (convertView == null) {
            convertView = createItemLayout(parent);
        }
        this.bindView(position, convertView, parent, getItem(position));
        return convertView;
    }

    /**
     * 获取视图
     *
     * @param position
     * @param convertView
     * @param parent
     * @param t
     * @return
     */
    public abstract View bindView(int position, @NonNull View convertView, ViewGroup parent, T t);

    /**
     * 获取显示在输入框的字符串
     *
     * @param position
     * @return
     */
    public abstract String getDisplayString(int position);

    public Object getViewHolder(View view) {
        return view;
    }

    private View createItemLayout(ViewGroup parent) {
        View v = LayoutInflater.from(this.context).inflate(itemLayout, parent, false);
        v.setTag(getViewHolder(v));
        return v;
    }
}