View.kt

class View {
    private var beforeTextChangedListener: (() -> Unit)? = null
    private var afterTextChangedListener: (() -> Unit)? = null
    private var onTextChangedListener: (() -> Unit)? = null

    fun setBeforeTextChangedListener(listener: () -> Unit) {
        beforeTextChangedListener = listener
    }

    fun setAfterTextChangedListener(listener: () -> Unit) {
        beforeTextChangedListener = listener
    }

    fun setOnTextChangeListener(listener: () -> Unit) {
        beforeTextChangedListener = listener
    }
}