/// <summary>
/// Retrieves the value of a property supported by the UI Automation provider.
/// (Inherited from IRawElementProviderSimple.)
/// A provider should return NotSupported only if it is explicitly hiding the
/// property value and the request is not to be passed through to other
/// providers.
/// </summary>
/// <param name="propertyId">The property identifier.</param>
/// <returns>The property value, or a null if the property is not supported
/// by this provider, or NotSupported if it is not supported at all.</returns>
public Object GetPropertyValue(int propertyId)
{ // see method doc for non-null example
if (propertyId == AutomationElementIdentifiers.NameProperty.Id ||
propertyId == AutomationElementIdentifiers.AutomationIdProperty.Id ||
propertyId == AutomationElementIdentifiers.ClassNameProperty.Id)
{
return("RootSite");
}
else if (propertyId == AutomationElementIdentifiers.BoundingRectangleProperty.Id)
{ // use hwnd to get bounding rectangle
Rectangle tempRect = new Rectangle();
return(GetWindowRect(m_providerHwnd, tempRect));
}
else if (propertyId == AutomationElementIdentifiers.ControlTypeProperty.Id)
{
return(System.Windows.Automation.ControlType.DataGrid.Id);
}
else if (propertyId == AutomationElementIdentifiers.FrameworkIdProperty.Id)
{
return("FDO");
}
else if (propertyId == AutomationElementIdentifiers.HasKeyboardFocusProperty.Id)
{ // use hwnd to determine if this RootSite has focus
// Can it ever have it, or does it have it if a child has it?
IntPtr controlHwnd = GetFocus();
return(controlHwnd == m_providerHwnd);
}
else if (propertyId == AutomationElementIdentifiers.IsContentElementProperty.Id)
{ // use hwnd to determine if this RootSite has content (normally true)
uint GW_CHILD = 5; // from C:\Program Files\PlatformSDK\Include\WinUser.h
IntPtr childHwnd = GetWindow(m_providerHwnd, GW_CHILD);
return(childHwnd != null);
}
else if (propertyId == AutomationElementIdentifiers.IsControlElementProperty.Id ||
propertyId == AutomationElementIdentifiers.IsEnabledProperty.Id ||
propertyId == AutomationElementIdentifiers.IsGridPatternAvailableProperty.Id ||
propertyId == AutomationElementIdentifiers.IsKeyboardFocusableProperty.Id ||
propertyId == AutomationElementIdentifiers.IsRangeValuePatternAvailableProperty.Id
)
{
return(true);
}
else if (propertyId == AutomationElementIdentifiers.IsDockPatternAvailableProperty.Id ||
propertyId == AutomationElementIdentifiers.IsExpandCollapsePatternAvailableProperty.Id ||
propertyId == AutomationElementIdentifiers.IsGridItemPatternAvailableProperty.Id ||
propertyId == AutomationElementIdentifiers.IsInvokePatternAvailableProperty.Id ||
propertyId == AutomationElementIdentifiers.IsMultipleViewPatternAvailableProperty.Id ||
propertyId == AutomationElementIdentifiers.IsPasswordProperty.Id ||
propertyId == AutomationElementIdentifiers.IsRequiredForFormProperty.Id ||
propertyId == AutomationElementIdentifiers.IsScrollItemPatternAvailableProperty.Id ||
propertyId == AutomationElementIdentifiers.IsScrollPatternAvailableProperty.Id ||
propertyId == AutomationElementIdentifiers.IsSelectionItemPatternAvailableProperty.Id ||
propertyId == AutomationElementIdentifiers.IsSelectionPatternAvailableProperty.Id ||
propertyId == AutomationElementIdentifiers.IsTableItemPatternAvailableProperty.Id ||
propertyId == AutomationElementIdentifiers.IsTablePatternAvailableProperty.Id ||
propertyId == AutomationElementIdentifiers.IsTextPatternAvailableProperty.Id ||
propertyId == AutomationElementIdentifiers.IsTogglePatternAvailableProperty.Id ||
propertyId == AutomationElementIdentifiers.IsTransformPatternAvailableProperty.Id ||
propertyId == AutomationElementIdentifiers.IsValuePatternAvailableProperty.Id ||
propertyId == AutomationElementIdentifiers.IsWindowPatternAvailableProperty.Id
)
{
return(false);
}
else if (propertyId == AutomationElementIdentifiers.IsOffscreenProperty.Id)
{ // use hwnd to determine if this RootSite is off-screen
/* The value is true if the element is entirely scrolled out of view (for example, an item in
* a list box) or collapsed out of view (for example, an item in a tree view or menu, or a
* minimized window). If the element has a clickable point that can cause it to be focused,
* it is considered to be onscreen.
* The value of the property is not affected by occlusion by other windows, or by whether the
* element is visible on a specific monitor.
* When the value is true for a container, it is also true for the container element's descendants.
*/
return(IsWindowVisible(m_providerHwnd));
}
else if (propertyId == AutomationElementIdentifiers.NativeWindowHandleProperty.Id)
{
return(m_providerHwnd);
}
else if (propertyId == AutomationElementIdentifiers.ProcessIdProperty.Id)
{ // use hwnd to find the ProcessID likely "flex"
IntPtr procId;
IntPtr threadId = GetWindowThreadProcessId(m_providerHwnd, out procId);
Process proc = Process.GetProcessById((int)procId);
return(proc.ProcessName);
}
else if (propertyId == AutomationElementIdentifiers.RuntimeIdProperty.Id)
{ // use hwnd to find the Runtime Id
return(new int[] { AutomationInteropProvider.AppendRuntimeId, 20 }); // group ID = 20
}
else if (propertyId == AutomationElementIdentifiers.StructureChangedEvent.Id)
{ // use hwnd to listen for events that indicate a row was added/deleted
return(m_ivb.IsDirty()); // (bool) returns true or false
}
else if (propertyId == AutomationElementIdentifiers.ClickablePointProperty.Id ||
propertyId == AutomationElementIdentifiers.CultureProperty.Id ||
propertyId == AutomationElementIdentifiers.HelpTextProperty.Id ||
propertyId == AutomationElementIdentifiers.ItemStatusProperty.Id ||
propertyId == AutomationElementIdentifiers.ItemTypeProperty.Id ||
propertyId == AutomationElementIdentifiers.LabeledByProperty.Id || // Slices have labels
propertyId == AutomationElementIdentifiers.LayoutInvalidatedEvent.Id ||
propertyId == AutomationElementIdentifiers.LocalizedControlTypeProperty.Id || // Yes?
propertyId == AutomationElementIdentifiers.MenuClosedEvent.Id ||
propertyId == AutomationElementIdentifiers.MenuOpenedEvent.Id ||
propertyId == AutomationElementIdentifiers.OrientationProperty.Id ||
propertyId == AutomationElementIdentifiers.ToolTipClosedEvent.Id ||
propertyId == AutomationElementIdentifiers.ToolTipOpenedEvent.Id
)
{ // These do not apply to a RootSite
return(AutomationElementIdentifiers.NotSupported);
}
else
{
return(null);
}
}