Function updateStyling

packages/core/src/render3/instructions/styling.ts:847–879

* Update a simple (property name) styling. * * This function takes `prop` and updates the DOM to that value. The function takes the binding * value as well as binding priority into consideration to determine which value should be written * to DOM. (For example it may be determined that there is

(
  tView: TView,
  tNode: TNode,
  lView: LView,
  renderer: Renderer,
  prop: string,
  value: string | undefined | null | boolean,
  isClassBased: boolean,
  bindingIndex: number,
)

 * @param bindingIndex Binding index of the binding.
 */
function updateStyling(
  tView: TView,
  tNode: TNode,
  lView: LView,
  renderer: Renderer,
  prop: string,
  value: string | undefined | null | boolean,
  isClassBased: boolean,
  bindingIndex: number,
) {
  if (!(tNode.type & TNodeType.AnyRNode)) {
    // It is possible to have styling on non-elements (such as ng-container).
    // This is rare, but it does happen. In such a case, just ignore the binding.
    return;
  }
  const tData = tView.data;
  const tRange = tData[bindingIndex + 1] as TStylingRange;
  const higherPriorityValue = getTStylingRangeNextDuplicate(tRange)
    ? findStylingValue(tData, tNode, lView, prop, getTStylingRangeNext(tRange), isClassBased)
    : undefined;
  if (!isStylingValuePresent(higherPriorityValue)) {
    // We don't have a next duplicate, or we did not find a duplicate value.
    if (!isStylingValuePresent(value)) {
      // We should delete current value or restore to lower priority value.
      if (getTStylingRangePrevDuplicate(tRange)) {
        // We have a possible prev duplicate, let's retrieve it.
        value = findStylingValue(tData, null, lView, prop, bindingIndex, isClassBased);
      }
    }
    const rNode = getNativeByIndex(getSelectedIndex(), lView) as RElement;
    applyStyling(renderer, isClassBased, rNode, prop, value);
  }
}

/**
 * Search for styling value with higher priority which is overwriting current value, or a