moveDown method

void moveDown(ListItem? element)

Implementation

void moveDown(ListItem? element) {
  double position = 0.0;
  if (board.dragItemIndex! + 1 >=
      board.lists[board.dragItemOfListIndex!].items.length) {
    return;
  }

  if (valueNotifier.value.dx >
      board.lists[board.dragItemOfListIndex!].x! +
          (board.lists[board.dragItemOfListIndex!].width! / 2)) {
    return;
  }
  position = board
      .lists[board.dragItemOfListIndex!].items[board.dragItemIndex! + 1].y!;

  if (valueNotifier.value.dy + 50 > position &&
      valueNotifier.value.dy + 50 < position + 130) {
    board.lists[board.dragItemOfListIndex!].items
        .removeAt(board.dragItemIndex!);
    board.lists[board.dragItemOfListIndex!].items.insert(
        board.dragItemIndex! + 1,
        ListItem(
            child: Container(
              width: 500,
              // key: ValueKey("xlwq${itemIndex! + 1}"),
              color: Colors.green,
              height: 50,
              margin: const EdgeInsets.only(bottom: 10),
              child: Text(
                "ITEM ${draggedItemState!.itemIndex! + 1}",
                style: const TextStyle(
                    fontSize: 20,
                    color: Colors.white,
                    fontWeight: FontWeight.bold),
              ),
            ),
            listIndex: board.dragItemOfListIndex!,
            index: board.dragItemIndex! + 1,
            height: board.lists[board.dragItemOfListIndex!]
                .items[board.dragItemIndex!].height,
            width: board.lists[board.dragItemOfListIndex!]
                .items[board.dragItemIndex!].width,
            x: 0,
            y: 0));
    board.dragItemIndex = board.dragItemIndex! + 1;
  }
}