Method resize

src/Plugins/ResizeMirror/ResizeMirror.ts:122–165

* Resize function for * @param {DragOverEvent | DragOverContainer} dragEvent * @private

(dragEvent: DragOverEvent | DragOverContainerEvent)

   * @private
   */
  private resize(dragEvent: DragOverEvent | DragOverContainerEvent) {
    requestAnimationFrame(() => {
      let over: HTMLElement | null = null;
      const {overContainer} = dragEvent;

      if (this.mirror == null || this.mirror.parentNode == null) {
        return;
      }

      if (this.mirror.parentNode !== overContainer) {
        overContainer.appendChild(this.mirror);
      }

      if (isDragOverEvent(dragEvent)) {
        over = dragEvent.over;
      }

      const overElement =
        over ||
        this.draggable.getDraggableElementsForContainer(overContainer)[0];

      if (!overElement) {
        return;
      }

      requestNextAnimationFrame(() => {
        const overRect = overElement.getBoundingClientRect();

        if (
          this.mirror == null ||
          (this.lastHeight === overRect.height &&
            this.lastWidth === overRect.width)
        ) {
          return;
        }

        this.mirror.style.width = `${overRect.width}px`;
        this.mirror.style.height = `${overRect.height}px`;

        this.lastWidth = overRect.width;
        this.lastHeight = overRect.height;
      });
    });
  }
}