private void OnContainerContentChanging()

in src/BehaviorsSDKManaged/Microsoft.Xaml.Interactions/Core/IncrementalUpdateBehavior.cs [237:276]
34 lines of code
8 McCabe index (conditional complexity)

            private void OnContainerContentChanging(ListViewBase sender, ContainerContentChangingEventArgs e)
            {
                UIElement contentTemplateRoot = e.ItemContainer.ContentTemplateRoot;

                ElementCacheRecord elementCacheRecord;
                if (this._elementCache.TryGetValue(contentTemplateRoot, out elementCacheRecord))
                {
                    if (!e.InRecycleQueue)
                    {
                        foreach (List<PhasedElementRecord> phaseRecord in elementCacheRecord.ElementsByPhase)
                        {
                            foreach (PhasedElementRecord phasedElementRecord in phaseRecord)
                            {
                                phasedElementRecord.FreezeAndHide();
                            }
                        }

                        if (elementCacheRecord.Phases.Count > 0)
                        {
                            e.RegisterUpdateCallback((uint)elementCacheRecord.Phases[0], this.OnContainerContentChangingCallback);
                        }

                        // set the DataContext manually since we inhibit default operation by setting e.Handled=true
                        ((FrameworkElement)contentTemplateRoot).DataContext = e.Item;
                    }
                    else
                    {
                        // clear the DataContext manually since we inhibit default operation by setting e.Handled=true
                        contentTemplateRoot.ClearValue(FrameworkElement.DataContextProperty);

                        foreach (List<PhasedElementRecord> phaseRecord in elementCacheRecord.ElementsByPhase)
                        {
                            foreach (PhasedElementRecord phasedElementRecord in phaseRecord)
                            {
                                phasedElementRecord.ThawAndShow();
                            }
                        }
                    }
                }
            }