Method _updateCachedSizes

src/cdk/table/sticky-styler.ts:536–582

Update _elemSizeCache with the observed sizes.

(entries: ResizeObserverEntry[])

  /** Update _elemSizeCache with the observed sizes. */
  private _updateCachedSizes(entries: ResizeObserverEntry[]) {
    let needsColumnUpdate = false;
    for (const entry of entries) {
      const newEntry = entry.borderBoxSize?.length
        ? {
            width: entry.borderBoxSize[0].inlineSize,
            height: entry.borderBoxSize[0].blockSize,
          }
        : {
            width: entry.contentRect.width,
            height: entry.contentRect.height,
          };

      if (
        newEntry.width !== this._elemSizeCache.get(entry.target as HTMLElement)?.width &&
        isCell(entry.target)
      ) {
        needsColumnUpdate = true;
      }

      this._elemSizeCache.set(entry.target as HTMLElement, newEntry);
    }

    if (needsColumnUpdate && this._updatedStickyColumnsParamsToReplay.length) {
      if (this._stickyColumnsReplayTimeout) {
        clearTimeout(this._stickyColumnsReplayTimeout);
      }

      this._stickyColumnsReplayTimeout = setTimeout(() => {
        if (this._destroyed) {
          return;
        }

        for (const update of this._updatedStickyColumnsParamsToReplay) {
          this.updateStickyColumns(
            update.rows,
            update.stickyStartStates,
            update.stickyEndStates,
            true,
            false,
          );
        }
        this._updatedStickyColumnsParamsToReplay = [];
        this._stickyColumnsReplayTimeout = null;
      }, 0);
    }
  }
}

function isCell(element: Element) {