private static void PopulatePropertiesAndPatternsFromCache()

in src/Desktop/UIAutomation/DesktopElementExtensionMethods.cs [238:311]
51 lines of code
5 McCabe index (conditional complexity)

        private static void PopulatePropertiesAndPatternsFromCache(this A11yElement element)
        {
            try
            {
                // Get the list of properties to retrieve
                A11yAutomation.UIAutomationObject.PollForPotentialSupportedProperties((IUIAutomationElement)element.PlatformObject, out int[] ppids, out string[] ppns);

                var ppl = new List<Tuple<int, string>>();

                for (int i = 0; i < ppids.Length; i++)
                {
                    var id = (int)ppids.GetValue(i);
                    var name = (string)ppns.GetValue(i);

                    if (DesktopElement.IsExcludedProperty(id, name) == false)
                    {
                        ppl.Add(new Tuple<int, string>(id, name));
                    }
                }

                A11yAutomation.UIAutomationObject.PollForPotentialSupportedPatterns((IUIAutomationElement)element.PlatformObject, out int[] ptids, out string[] ptns);
                var ptl = new List<Tuple<int,string>>();

                for (int i = 0; i < ptids.Length; i++)
                {
                    ptl.Add(new Tuple<int, string>((int)ptids.GetValue(i), (string)ptns.GetValue(i)));
                }

                var pplist = (from pp in ppl
                              select pp.Item1).ToList();
                var ptlist = (from pt in ptl
                              select pt.Item1).ToList();

                // build a cache based on the lists
                var cache = DesktopElementHelper.BuildCacheRequest(pplist, ptlist);

                // buildupdate cached element
                var uia = ((IUIAutomationElement)element.PlatformObject).BuildUpdatedCache(cache);

                // retrieve properties from cache
                var ps = (from pp in ppl//.AsParallel()
                          let val = GetPropertyValueFromCache(uia, pp.Item1)
                          where val != null
                          select new A11yProperty(pp.Item1, val, pp.Item2));

                element.Properties = ps.Where(p => !string.IsNullOrEmpty(p.TextValue)).ToDictionary(d => d.Id);

                element.UpdateGlimpse();

                element.InitClickablePointProperty(uia);

                // retrieve patterns from cache
                var ptlst = from pt in ptl
                          let pi = A11yPatternFactory.GetPatternInstance(element, uia, pt.Item1, pt.Item2)
                          where pi != null
                          select pi;

                element.Patterns = ptlst.ToList();

                // release previous UIAElement
                Marshal.ReleaseComObject(uia);
                // release cache interface.
                Marshal.ReleaseComObject(cache);

                ppl.Clear();
                ptl.Clear();
            }
#pragma warning disable CA1031 // Do not catch general exception types
            catch (Exception e)
            {
                e.ReportException();
            }
#pragma warning restore CA1031 // Do not catch general exception types
        }