MainActivity.kt

    private fun addRow(currency: Currency) {
        CurrencyRow(this).run row@{
            initRow(currency)
            dragLinearLayout.run {
                addView(this@row)
                setViewDraggable(this@row, this@row)
                scrollableArea.setOnLongClickListener {
                    val indexToRemove = indexOfChild(this@row)
                    addedCurrencies.removeAt(indexToRemove).let {
                        removedCurrencies.push(it)
                    }
                    layoutTransition = LayoutTransition()
                    removeDragView(this@row)
                    layoutTransition = null
                    true
                }
            }
        }
    }