private void OnNavigationUpdated (object sender, NavigationEventArgs e)
{
ScrollBarProvider provider;
if ((provider = e.ChildProvider as ScrollBarProvider) != null) {
if (provider != null) {
SWF.ScrollBar scrollbarProvider = (SWF.ScrollBar) provider.Control;
if (e.ChangeType == StructureChangeType.ChildAdded) {
if (scrollbar == scrollbarProvider)
return;
if (scrollbar != null)
scrollbar.ValueChanged -= OnScrollValueChanged;
scrollbar = scrollbarProvider;
scrollbar.ValueChanged += OnScrollValueChanged;
} else if (e.ChangeType == StructureChangeType.ChildRemoved
|| e.ChangeType == StructureChangeType.ChildrenBulkRemoved) {
if (scrollbar != null)
scrollbar.ValueChanged -= OnScrollValueChanged;
scrollbar = null;
}
}
}
RaiseAutomationPropertyChangedEvent ();
}
private void OnNavigationChildrenUpdated (object sender,
NavigationEventArgs args)
{
if (args.ChangeType == StructureChangeType.ChildAdded) {
if (args.Index == -1) {
AddLast (args.ChildProvider.Navigation);
} else {
AddElementAt (args.Index, args.ChildProvider.Navigation);
}
if (args.RaiseEvent == true) {
Helper.RaiseStructureChangedEvent (StructureChangeType.ChildAdded,
args.ChildProvider);
Helper.RaiseStructureChangedEvent (StructureChangeType.ChildrenInvalidated,
(FragmentControlProvider) sender);
}
} else if (args.ChangeType == StructureChangeType.ChildRemoved) {
Remove (args.ChildProvider.Navigation);
if (args.RaiseEvent == true) {
Helper.RaiseStructureChangedEvent (StructureChangeType.ChildRemoved,
args.ChildProvider);
Helper.RaiseStructureChangedEvent (StructureChangeType.ChildrenInvalidated,
(FragmentControlProvider) sender);
}
} else if (args.ChangeType == StructureChangeType.ChildrenReordered) {
chain.Clear ();
//TODO: Is this the event to generate?
if (args.RaiseEvent == true) {
Helper.RaiseStructureChangedEvent (StructureChangeType.ChildrenBulkRemoved,
(FragmentControlProvider) sender);
Helper.RaiseStructureChangedEvent (StructureChangeType.ChildrenInvalidated,
(FragmentControlProvider) sender);
}
}
}
