private static void OnGroupStylesChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
ItemsControl itemsControl = d as ItemsControl;
if (itemsControl != null)
{
itemsControl.GroupStyle.Clear();
GroupStyleCollection groupStyles = e.NewValue as GroupStyleCollection;
if (groupStyles != null)
{
// itemsControl.GroupStyle.AddRange (groupStyles); ** Uncomment when we have C# 3.0 support **
Extensions.AddRange(itemsControl.GroupStyle, groupStyles);
}
}
}
/// <summary>
/// Called when the group styles property is changed.
/// </summary>
/// <param name="dependencyObject">The dependency object.</param>
/// <param name="e">The <see cref="DependencyPropertyChangedEventArgs"/> instance containing the event data.</param>
private static void OnGroupStylesPropertyChanged(
DependencyObject dependencyObject,
DependencyPropertyChangedEventArgs e)
{
ItemsControl itemsControl = (ItemsControl)dependencyObject;
GroupStyleCollection groupStyles = GetGroupStyles(itemsControl);
if (groupStyles != null)
{
itemsControl.GroupStyle.Clear();
foreach (GroupStyle groupStyle in groupStyles)
{
itemsControl.GroupStyle.Add(groupStyle);
}
}
}
/// <summary>
/// Sets the value of the <see cref="GroupStylesProperty"/> attached property for a specified <see cref="ItemsControl"/>.
/// </summary>
/// <param name="itemsControl">The items control to which the attached property is written.</param>
/// <param name="groupStyles">The group styles.</param>
public static void SetGroupStyles(ItemsControl itemsControl, GroupStyleCollection groupStyles)
{
itemsControl.SetValue(Extensions.GroupStylesProperty, groupStyles);
}
/// <summary>
/// Sets the group style attached via the <see cref="P:TomsToolbox.Wpf.StyleBindings.GroupStyles"/> attached property.
/// </summary>
/// <param name="obj">The object the group style is attached to.</param>
/// <param name="value">The group styles.</param>
public static void SetGroupStyles([NotNull] DependencyObject obj, [CanBeNull, ItemNotNull] GroupStyleCollection value)
{
obj.SetValue(GroupStylesProperty, value);
}
/// <summary>
/// Sets the group styles.
/// </summary>
/// <param name="itemsControl">The items control.</param>
/// <param name="value">The value.</param>
public static void SetGroupStyles(ItemsControl itemsControl, GroupStyleCollection value)
{
itemsControl.SetValue(GroupStylesProperty, value);
}
/// <summary>
/// Sets the group styles.
/// </summary>
/// <param name="itemsControl">The items control.</param>
/// <param name="value">The value.</param>
public static void SetGroupStyles(ItemsControl itemsControl, GroupStyleCollection value)
{
itemsControl.SetValue(GroupStylesProperty, value);
}
/// <summary>
/// Sets the group style attached via the <see cref="P:TomsToolbox.Wpf.StyleBindings.GroupStyles"/> attached property.
/// </summary>
/// <param name="obj">The object the group style is attached to.</param>
/// <param name="value">The group styles.</param>
public static void SetGroupStyles([NotNull] DependencyObject obj, [CanBeNull, ItemNotNull] GroupStyleCollection value)
{
Contract.Requires(obj != null);
obj.SetValue(GroupStylesProperty, value);
}
