private IUIAutomationElement GetNearbyElement(GetElementDelegate getNextElement)
{
var currentElement = GetCurrentElement();
if (currentElement == null)
{
return(null);
}
var treeWalker = A11yAutomation.GetTreeWalker(this.TreeViewMode);
var retVal = getNextElement?.Invoke(treeWalker, currentElement);
// make sure that we skip an element from current process while walking tree.
// this code should be hit only at App level. but for sure.
if (DesktopElement.IsFromCurrentProcess(retVal))
{
var tmp = retVal;
retVal = getNextElement?.Invoke(treeWalker, retVal);
// since element is not in use, release.
Marshal.ReleaseComObject(tmp);
}
Marshal.ReleaseComObject(treeWalker);
return(retVal);
}
/// <summary>
/// Get instance of EventMessage
/// when sender is null, it is generally error case.
///
/// if it returns null, it means that the sender is hosted in the process of running Recorder code.
/// </summary>
/// <param name="id"></param>
/// <param name="sender"></param>
/// <param name="comment"></param>
/// <param name="isError"></param>
/// <returns></returns>
public static EventMessage GetInstance(int id, IUIAutomationElement sender)
{
if (sender == null || !DesktopElement.IsFromCurrentProcess(sender))
{
return(new EventMessage(id, sender));
}
return(null);
}