DialogBuilderImpl.kt

private class DialogBuilderImpl<T>(val context: Context) : DialogBuilder<T> {

    data class DialogArgs<T>(
        val title: String? = null,
        val message: String? = null,
        val yesButtonAction: Serializable? = null,
        val noButtonAction: Serializable? = null,
        val yesButtonText: String? = null,
        val noButtonText: String? = null
    ) : Serializable

    var args = DialogArgs<T>()

    override fun title(title: String) {
        args = args.copy(title = title)
    }

    override fun title(titleResId: Int) {
        args = args.copy(title = context.getString(titleResId))
    }

    override fun message(message: String) {
        args = args.copy(message = message)
    }

    override fun message(messageResId: Int) {
        args = args.copy(message = context.getString(messageResId))
    }

    override fun positiveButtonAction(action: DialogCallback<T>) {
        args = args.copy(yesButtonAction = action as Serializable)
    }

    override fun negativeButtonAction(action: DialogCallback<T>) {
        args = args.copy(noButtonAction = action as Serializable)
    }

    override fun negativeButtonText(negativeButtonResId: Int) {
        args = args.copy(noButtonText = context.getString(negativeButtonResId))
    }

    override fun negativeButtonText(negativeButtonText: String) {
        args = args.copy(noButtonText = negativeButtonText)
    }

    override fun positiveButtonText(resId: Int) {
        args = args.copy(yesButtonText = context.getString(resId))
    }

    override fun positiveButtonText(positiveButtonText: String) {
        args = args.copy(yesButtonText = positiveButtonText)
    }
}