private static void OnDataSourceChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
GalleryItemGroup galleryItemGroup = d as GalleryItemGroup;
if (e.NewValue == null)
{
return;
}
//Clear any existing items that were owned by this
if (galleryItemGroup.ItemKeys.Count > 0)
{
foreach (var key in galleryItemGroup.ItemKeys)
{
if (galleryItemGroup.GalleryTool.Items.ContainsKey(key))
{
galleryItemGroup.GalleryTool.Items.Remove(galleryItemGroup.GalleryTool.Items[key]);
}
}
}
galleryItemGroup.ItemKeys.Clear();
//Get the image converter that will provide image paths
var imageConverter = galleryItemGroup.GetValue(GalleryItemGroupProperties.ImageConverterProperty) as IValueConverter;
foreach (var item in (IEnumerable)e.NewValue)
{
var galleryItem = new GalleryItem
{
Key = item.ToString(),
Text = item.ToString(),
};
if (imageConverter != null)
{
galleryItem.Image = new BitmapImage(new Uri((string)imageConverter.Convert(item, typeof(string), null, null), UriKind.RelativeOrAbsolute));
}
galleryItemGroup.GalleryTool.Items.Add(galleryItem);
galleryItemGroup.ItemKeys.Add(item.ToString());
}
//Check if GalleryToolProperties.SelectedItemKey was set
var selectedItem = galleryItemGroup.GalleryTool.GetValue(GalleryToolProperties.SelectedItemKeyProperty);
{
if (selectedItem != null)
{
galleryItemGroup.GalleryTool.SetValue(GalleryToolProperties.SelectedItemKeyProperty, null);
galleryItemGroup.GalleryTool.SetValue(GalleryToolProperties.SelectedItemKeyProperty, selectedItem);
}
}
}
private static GalleryItemSelectedCommandBehavior GetOrCreateBehavior(GalleryItemGroup menuItem)
{
GalleryItemSelectedCommandBehavior behavior = menuItem.GetValue(SelectedCommandBehaviorProperty) as GalleryItemSelectedCommandBehavior;
if (behavior == null)
{
behavior = new GalleryItemSelectedCommandBehavior(menuItem);
menuItem.SetValue(SelectedCommandBehaviorProperty, behavior);
}
return(behavior);
}
public static object GetImageConverter(GalleryItemGroup source)
{
return((object)source.GetValue(ImageConverterProperty));
}
public static object GetDataSource(GalleryItemGroup source)
{
return((object)source.GetValue(DataSourceProperty));
}
public static object GetGroupKeys(GalleryItemGroup source)
{
return((object)source.GetValue(GroupKeysProperty));
}
public static object GetCommandParameter(GalleryItemGroup menuItem)
{
return(menuItem.GetValue(CommandParameterProperty));
}
public static ICommand GetCommand(GalleryItemGroup menuItem)
{
return(menuItem.GetValue(CommandProperty) as ICommand);
}