Method renderRows

src/cdk/table/table.ts:731–771

* Renders rows based on the table's latest set of data, which was either provided directly as an * input or retrieved through an Observable stream (directly or from a DataSource). * Checks for differences in the data since the last diff to perform only the necessary * changes (add/remove/mo

()

   * an array, this function will need to be called to render any changes.
   */
  renderRows() {
    this._renderRows = this._getAllRenderRows();
    const changes = this._dataDiffer.diff(this._renderRows);
    if (!changes) {
      this._updateNoDataRow();
      this.contentChanged.next();
      return;
    }
    const viewContainer = this._rowOutlet.viewContainer;

    this._viewRepeater.applyChanges(
      changes,
      viewContainer,
      (
        record: IterableChangeRecord<RenderRow<T>>,
        _adjustedPreviousIndex: number | null,
        currentIndex: number | null,
      ) => this._getEmbeddedViewArgs(record.item, currentIndex!),
      record => record.item.data,
      (change: _ViewRepeaterItemChange<RenderRow<T>, RowContext<T>>) => {
        if (change.operation === _ViewRepeaterOperation.INSERTED && change.context) {
          this._renderCellTemplateForItem(change.record.item.rowDef, change.context);
        }
      },
    );

    // Update the meta context of a row's context data (index, count, first, last, ...)
    this._updateRowIndexContext();

    // Update rows that did not get added/removed/moved but may have had their identity changed,
    // e.g. if trackBy matched data on some property but the actual data reference changed.
    changes.forEachIdentityChange((record: IterableChangeRecord<RenderRow<T>>) => {
      const rowView = <RowViewRef<T>>viewContainer.get(record.currentIndex!);
      rowView.context.$implicit = record.item.data;
    });

    this._updateNoDataRow();

    this.contentChanged.next();
    this.updateStickyColumnStyles();
  }

  /** Adds a column definition that was not included as part of the content children. */
  addColumnDef(columnDef: CdkColumnDef) {