protected _updateComponentFocusRestriction()

in src/web/utils/FocusManager.ts [259:302]
37 lines of code
16 McCabe index (conditional complexity)

    protected /* static */  _updateComponentFocusRestriction(storedComponent: StoredFocusableComponent): void {
        const newAriaHidden = storedComponent.restricted || (storedComponent.limitedCount > 0) ? true : undefined;
        const newTabIndex = newAriaHidden || (storedComponent.limitedCountAccessible > 0) ? -1 : undefined;
        const restrictionRemoved = newTabIndex === undefined;

        if ((storedComponent.curTabIndex !== newTabIndex) || (storedComponent.curAriaHidden !== newAriaHidden)) {
            const el = ReactDOM.findDOMNode(storedComponent.component) as HTMLElement | null;

            if (el) {
                if (storedComponent.curTabIndex !== newTabIndex) {
                    storedComponent.curTabIndex = newTabIndex;

                    if (restrictionRemoved) {
                        FocusManager._setTabIndex(el, storedComponent.origTabIndex);
                    } else {
                        const prevTabIndex = FocusManager._setTabIndex(el, newTabIndex);
                        if (!('origTabIndex' in storedComponent)) {
                            storedComponent.origTabIndex = prevTabIndex;
                        }
                    }
                }

                if (storedComponent.curAriaHidden !== newAriaHidden) {
                    storedComponent.curAriaHidden = newAriaHidden;

                    if (restrictionRemoved) {
                        FocusManager._setAriaHidden(el, storedComponent.origAriaHidden);
                    } else {
                        const prevAriaHidden = FocusManager._setAriaHidden(el, newAriaHidden ? 'true' : undefined);
                        if (!('origAriaHidden' in storedComponent)) {
                            storedComponent.origAriaHidden = prevAriaHidden;
                        }
                    }
                }

                if (restrictionRemoved) {
                    delete storedComponent.origTabIndex;
                    delete storedComponent.origAriaHidden;
                }
            }

            FocusManager._callFocusableComponentStateChangeCallbacks(storedComponent, !restrictionRemoved);
        }
    }