private async void LoadSurface()

in SamplesCommon/SamplesCommon/CompositionImage.cs [371:444]
52 lines of code
12 McCabe index (conditional complexity)

        private async void LoadSurface()
        {
            // If we're clearing out the content, return
            if (_uri == null)
            {
                ReleaseSurface();
                return;
            }

            try
            {
                // Start a timer to enable the placeholder image if requested
                if (_surface == null && _placeholderDelay >= TimeSpan.Zero)
                {
                    _timer = new DispatcherTimer();
                    _timer.Interval = _placeholderDelay;
                    _timer.Tick += Timer_Tick;
                    _timer.Start();
                }

                // Load the image asynchronously
                ManagedSurface surface = await ImageLoader.Instance.LoadFromUriAsync(_uri, Size.Empty, _loadEffectDelegate);

                if (_surface != null)
                {
                    ReleaseSurface();
                }

                _surface = surface;

                // The surface has changed, so we need to re-measure with the new surface dimensions
                InvalidateMeasure();

                // Async operations may take a while.  If we've unloaded, return now.
                if (_unloaded)
                {
                    ReleaseSurface();
                    return;
                }

                // Update the brush
                UpdateBrush();

                // Success, fire the Opened event
                if (ImageOpened != null)
                {
                    ImageOpened(this, null);
                }

                //
                // If we created the loading placeholder, now that the image has loaded 
                // cross-fade it out.
                //

                if (_sprite != null && _sprite.Children.Count > 0)
                {
                    Debug.Assert(_timer == null);
                    StartCrossFade();
                }
                else if (_timer != null)
                {
                    // We didn't end up loading the placeholder, so just stop the timer
                    _timer.Stop();
                    _timer = null;
                }
            }
            catch (FileNotFoundException)
            {
                if (ImageFailed != null)
                {
                    ImageFailed(this, null);
                }
            }
        }