ScrollItemPattern(
AutomationElement element,
IUIAutomationScrollItemPattern scrollItemPattern)
: base(el: element)
{
this._scrollItemPattern = scrollItemPattern;
}
protected override void Dispose(bool disposing)
{
if (Pattern != null)
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(Pattern);
this.Pattern = null;
}
base.Dispose(disposing);
}
/// <summary>
/// <para>Sets/Resets the Pattern and its properties.</para>
/// <para>Useful in this class for resetting the Pattern's properties after an action is performed on the Element.</para>
/// </summary>
private void Initialize(Element element)
{
this._element = element;
int counter = 0;
do
{
try { _ScrollItemPattern = (IUIAutomationScrollItemPattern)_element.IUIElement.GetCurrentPattern(UIA_PatternIds.UIA_ScrollItemPatternId); }
catch (COMException e) { }
} while (_ScrollItemPattern == null && counter++ < 10);
if (_ScrollItemPattern == null)
{
throw new Exception($"Pattern is not available for Element where Name=[{_element.Name}] - AutomationId=[{_element.AutomationId}] - ClassName=[{_element.ClassName}].");
}
}
public ScrollItemPattern(A11yElement e, IUIAutomationScrollItemPattern p) : base(e, PatternType.UIA_ScrollItemPatternId)
{
Pattern = p;
}
public static void xtScrollIntoView(this IUIAutomationElement element)
{
_ScrollItemPattern = (IUIAutomationScrollItemPattern)element.GetCurrentPattern(UIA_PatternIds.UIA_ScrollItemPatternId);
_ScrollItemPattern.ScrollIntoView();
}
private ScrollItemPattern(AutomationElement el, IUIAutomationScrollItemPattern pattern, bool cached)
: base(el, cached)
{
Debug.Assert(pattern != null);
this._pattern = pattern;
}
internal static ScrollItemPattern Wrap(
AutomationElement element,
IUIAutomationScrollItemPattern scrollItemPattern)
{
return(new ScrollItemPattern(element: element, scrollItemPattern: scrollItemPattern));
}
