CheckBoxGroup.kt

package com.jephtecolin.kwii.ui.custom

import android.content.Context
import android.util.AttributeSet
import android.view.ViewGroup
import android.widget.LinearLayout
import androidx.databinding.Bindable
import com.jephtecolin.kwii.R
import com.jephtecolin.kwii.util.TAG
import com.jephtecolin.model.Topping
import timber.log.Timber


class CheckBoxGroup @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null) :
        LinearLayout(context, attrs) {
    val parent: LinearLayout
    private lateinit var mOnCheckedChangeListener: OnCheckedChangeListener

    var totalPrice: Double = 0.0

    init {
        inflate(context, R.layout.checkbox_group, this)
        parent = findViewById(R.id.root)
    }


    fun setItems(toppings: Array<Topping>) {

        toppings.forEach { topping ->
            val checkBox = CheckboxCustom(context)
            checkBox.layoutParams = LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT)
            checkBox.setTitle(topping.name)
            checkBox.setPrice(topping.price.toString())
            checkBox.setOnClickListener {
                Timber.tag(TAG).d("checkbox checked: %s", checkBox.isChecked())
               if(checkBox.isChecked()) {
                   totalPrice+= topping.price
                   mOnCheckedChangeListener.onCheckedChange(totalPrice)
               } else {
                   totalPrice-= topping.price
                   mOnCheckedChangeListener.onCheckedChange(totalPrice)
               }
            }
            parent.addView(checkBox)
        }
    }

    fun setOnCheckedChangeListener(listener: OnCheckedChangeListener?) {
        listener?.let { this.mOnCheckedChangeListener = it}
    }

}

interface OnCheckedChangeListener {
    fun onCheckedChange(totalPrice: Double)
}