CheckBoxGroupBindingAdapters.kt

package com.jephtecolin.kwii.util

import androidx.databinding.BindingAdapter
import androidx.databinding.InverseBindingAdapter
import androidx.databinding.InverseBindingListener
import com.jephtecolin.kwii.ui.custom.CheckBoxGroup
import com.jephtecolin.kwii.ui.custom.OnCheckedChangeListener
import com.jephtecolin.model.Topping
import timber.log.Timber


@BindingAdapter("setItems")
    fun setItems(checkboxGroup: CheckBoxGroup, toppings: Array<Topping>) {
        checkboxGroup.setItems(toppings)
    }

    @BindingAdapter(value = ["setOnCheckedChangeListener", "totalPriceAttrChanged"] , requireAll = false)
    fun setOnCheckedChangeListener(checkboxGroup: CheckBoxGroup, listener: OnCheckedChangeListener,
                                   totalPriceAttrChanged: InverseBindingListener) {
        totalPriceAttrChanged.onChange()
        checkboxGroup.setOnCheckedChangeListener(object : OnCheckedChangeListener {
            override fun onCheckedChange(totalPrice: Double) {
                Timber.d("binding adapter works")
                if (totalPriceAttrChanged != null) {
                    totalPriceAttrChanged.onChange()
                }
            }
        })
    }

    @BindingAdapter( "totalPrice")
    fun setTotalPrice(checkboxGroup: CheckBoxGroup, totalPrice: Double) {
        if(checkboxGroup.totalPrice != totalPrice) {
            checkboxGroup.totalPrice = totalPrice
        }
    }

    @InverseBindingAdapter(attribute = "totalPrice")
    fun getTotalPrice(checkboxGroup: CheckBoxGroup): Double {
        return checkboxGroup.totalPrice
    }