/// <summary>
/// Handles Command changed
/// </summary>
/// <param name="d"></param>
/// <param name="e"></param>
private static void OnCommandChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
RibbonControl control = d as RibbonControl;
EventHandler handler = control.OnCommandCanExecuteChanged;
if (e.OldValue != null)
{
(e.OldValue as ICommand).CanExecuteChanged -= handler;
}
if (e.NewValue != null)
{
handler = new EventHandler(control.OnCommandCanExecuteChanged);
control.canExecuteChangedHandler = handler;
(e.NewValue as ICommand).CanExecuteChanged += handler;
RoutedUICommand cmd = e.NewValue as RoutedUICommand;
if ((cmd != null) && (control.Header == null))
{
control.Header = cmd.Text;
}
}
control.UpdateCanExecute();
}
void Refresh()
{
// Clear currently used group containers
// and supply with new generated ones
foreach (GalleryGroupContainer galleryGroupContainer in galleryGroupContainers)
{
BindingOperations.ClearAllBindings(galleryGroupContainer);
//RemoveVisualChild(galleryGroupContainer);
visualCollection.Remove(galleryGroupContainer);
}
galleryGroupContainers.Clear();
// Gets filters
string[] filter = Filter == null ? null : Filter.Split(',');
Dictionary <string, GalleryGroupContainer> dictionary = new Dictionary <string, GalleryGroupContainer>();
foreach (UIElement item in InternalChildren)
{
if (item == null)
{
continue;
}
// Resolve group name
string propertyValue;
if (GroupByAdvanced == null)
{
propertyValue = (ItemContainerGenerator == null)
? GetPropertyValueAsString(item)
: GetPropertyValueAsString(ItemContainerGenerator.ItemFromContainer(item));
}
else
{
propertyValue = (ItemContainerGenerator == null)
? GroupByAdvanced(item)
: GroupByAdvanced(ItemContainerGenerator.ItemFromContainer(item));
}
if (propertyValue == null)
{
propertyValue = "Undefined";
}
// Make invisible if it is not in filter (or is not grouped)
if ((!IsGrouped) || (filter != null && !filter.Contains(propertyValue)))
{
item.Measure(new Size(0, 0));
item.Arrange(new Rect(0, 0, 0, 0));
}
// Skip if it is not in filter
if (filter != null && !filter.Contains(propertyValue))
{
continue;
}
// To put all items in one group in case of IsGrouped = False
if (!IsGrouped)
{
propertyValue = "Undefined";
}
if (!dictionary.ContainsKey(propertyValue))
{
GalleryGroupContainer galleryGroupContainer = new GalleryGroupContainer();
galleryGroupContainer.Header = propertyValue;
RibbonControl.Bind(this, galleryGroupContainer, "GroupStyle", GroupStyleProperty, BindingMode.OneWay);
RibbonControl.Bind(this, galleryGroupContainer, "Orientation", GalleryGroupContainer.OrientationProperty, BindingMode.OneWay);
RibbonControl.Bind(this, galleryGroupContainer, "ItemWidth", GalleryGroupContainer.ItemWidthProperty, BindingMode.OneWay);
RibbonControl.Bind(this, galleryGroupContainer, "ItemHeight", GalleryGroupContainer.ItemHeightProperty, BindingMode.OneWay);
RibbonControl.Bind(this, galleryGroupContainer, "MaxItemsInRow", GalleryGroupContainer.MaxItemsInRowProperty, BindingMode.OneWay);
RibbonControl.Bind(this, galleryGroupContainer, "MinItemsInRow", GalleryGroupContainer.MinItemsInRowProperty, BindingMode.OneWay);
dictionary.Add(propertyValue, galleryGroupContainer);
galleryGroupContainers.Add(galleryGroupContainer);
visualCollection.Add(galleryGroupContainer);
}
dictionary[propertyValue].Items.Add(new GalleryItemPlaceholder(item));
}
if (((!IsGrouped) || (GroupBy == null && GroupByAdvanced == null)) && galleryGroupContainers.Count != 0)
{
// Make it without headers
galleryGroupContainers[0].IsHeadered = false;
}
InvalidateMeasure();
}
