Function startDragging

packages/react-aria/src/dnd/useDrag.ts:320–349

(target: HTMLElement)

  };

  let startDragging = (target: HTMLElement) => {
    if (typeof state.options.onDragStart === 'function') {
      let rect = target.getBoundingClientRect();
      state.options.onDragStart({
        type: 'dragstart',
        x: rect.x + rect.width / 2,
        y: rect.y + rect.height / 2
      });
    }

    DragManager.beginDragging(
      {
        element: target,
        items: state.options.getItems(),
        allowedDropOperations:
          typeof state.options.getAllowedDropOperations === 'function'
            ? state.options.getAllowedDropOperations()
            : ['move', 'copy', 'link'],
        onDragEnd(e) {
          setDragging(null);
          if (typeof state.options.onDragEnd === 'function') {
            state.options.onDragEnd(e);
          }
        }
      },
      stringFormatter
    );

    setDragging(target);
  };

  let modality = useDragModality();
  let message = !isDragging ? MESSAGES[modality].start : MESSAGES[modality].end;