Models.kt

enum class Color {
    RED, YELLOW, GREEN, BLUE, WHITE
}

data class Item(
        val localId: String = generateLocalId(),
        val text: String? = null,
        val favorite: Boolean = false,
        val color: Color = Color.WHITE,
        val position: Long = object : PositionsFactory {}.newPosition()) {

    fun isEmpty(): Boolean = text == null

    fun isNotEmpty(): Boolean = !isEmpty()
}