package com.pcf.customize.binding

import androidx.lifecycle.ViewModel
import androidx.databinding.Bindable
import androidx.databinding.Observable
import androidx.databinding.PropertyChangeRegistry

open class ObservableViewModel : ViewModel(), Observable {

    private val callbacks: PropertyChangeRegistry by lazy { PropertyChangeRegistry() }

    override fun addOnPropertyChangedCallback(callback: Observable.OnPropertyChangedCallback) {
        callbacks.add(callback)
    }

    override fun removeOnPropertyChangedCallback(callback: Observable.OnPropertyChangedCallback) {
        callbacks.remove(callback)
    }
    
    @Suppress("unused")
    fun notifyChange() {
            callbacks.notifyCallbacks(this, 0, null)
    }
    
    fun notifyPropertyChanged(fieldId: Int) {
        callbacks.notifyCallbacks(this, fieldId, null)
    }
}