/// <summary>
/// Populate element with list of properties
/// </summary>
/// <param name="element"></param>
/// <param name="list"></param>
private static void PopulateWithIndicatedProperties(this A11yElement element, List <int> list)
{
element.Clear();
if (element.IsSafeToRefresh())
{
A11yAutomation.GetUIAutomationObject().PollForPotentialSupportedProperties((IUIAutomationElement)element.PlatformObject, out int[] ppids, out string[] ppns);
// build a cache based on the lists
var cache = DesktopElementHelper.BuildCacheRequest(list, null);
// buildupdate cached element
var uia = ((IUIAutomationElement)element.PlatformObject).BuildUpdatedCache(cache);
var properties = RetrievePropertiesFromCache(uia, list);
element.Properties = properties.Where(p => !string.IsNullOrEmpty(p.TextValue)).ToDictionary(d => d.Id);
element.UpdateGlimpse();
// release previous UIAElement
Marshal.ReleaseComObject(uia);
// release cache interface.
Marshal.ReleaseComObject(cache);
}
}
/// <summary>
/// Clone A11yElement for selection
/// </summary>
/// <param name="e"></param>
/// <returns>if element is not live, don't allow clow</returns>
public static A11yElement CloneForSelection(this A11yElement e)
{
try
{
if (e != null && e.PlatformObject != null)
{
var cache = DesktopElementHelper.BuildCacheRequest(MiniumProperties, null);
var uia = ((IUIAutomationElement)e.PlatformObject).BuildUpdatedCache(cache);
Marshal.ReleaseComObject(cache);
var ne = new DesktopElement(uia, true, false);
ne.PopulateMinimumPropertiesForSelection();
return(ne);
}
}
catch (COMException)
{
}
return(null);
}
/// <summary>
/// Refresh the property and patterns with Live data.
/// it also set the Glimpse
/// the update is done via caching to improve performance.
/// </summary>
/// <param name="useProperties">default is false to refresh it from UIElement directly</param>
private static void PopulatePropertiesAndPatternsFromCache(this A11yElement element)
{
try
{
// Get the list of properties to retrieve
A11yAutomation.GetUIAutomationObject().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.GetUIAutomationObject().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();
// 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();
}
catch
{
}
}