/// <summary>
/// Вспомогательная функция для режима выбора одного элемента, задает состояние IsSelected если оно указано и заполняет список коллекции UnselectedItems
/// </summary>
/// <remarks>
/// Helper function that sets items state if state value is specified, and filled UnselectedItems collection
/// This function is used in Single item Selection Mode
/// </remarks>
private void FillUnselected(object excludedValue, bool setItemsToState = false)
{
foreach (var item in Items)
{
if (!Equals(item, excludedValue))
{
var itemContainer = GetItemContainer(item);
if (itemContainer != null)
{
if (!itemContainer.IsSelected && !UnselectedItems.Contains(item))
{
UnselectedItems.Add(item);
}
else if (itemContainer.IsSelected && !UnselectedItems.Contains(item))
{
if (setItemsToState)
{
itemContainer.IsSelected = false;
if (!itemContainer.IsSelected)
{
UnselectedItems.Add(item);
}
}
}
else if (itemContainer.IsSelected && UnselectedItems.Contains(item))
{
if (setItemsToState)
{
itemContainer.IsSelected = false;
}
}
}
}
}
}
/// <summary>
/// Задает свойства контейнера элемента для отображения,
/// а так же устанавливает значения IsSelected если задано свойство SelectedIndex или SelectedItem
/// </summary>
/// <remarks>
/// Prepare the element to display the item,
/// depending on SelectionMode of elements and specified SelectedIndex or SelectedItem
/// </remarks>
protected override void PrepareContainerForItemOverride(DependencyObject element, object item)
{
base.PrepareContainerForItemOverride(element, item);
if (SelectedIndex == -1 && SelectedItem == null)
{
if (SelectionMode == SelectionModeEnum.MultipleWithDefault)
{
if (Items.IndexOf(item) == 0)
{
(element as UIEnumSwitchItem).MultipleSelectionWithDefault(true, SelectionAction.FirstSelection);
}
else
{
if (!UnselectedItems.Contains(item))
{
UnselectedItems.Add(item);
}
}
}
}
else if (SelectedIndex != -1)
{
if (SelectedIndex == Items.IndexOf(item))
{
if (SelectionMode == SelectionModeEnum.Single)
{
(element as UIEnumSwitchItem).SingleSelection(true, SelectionAction.FirstSelection);
}
else if (SelectionMode == SelectionModeEnum.MultipleWithDefault)
{
(element as UIEnumSwitchItem).MultipleSelectionWithDefault(true, SelectionAction.FirstSelection);
}
else if (SelectionMode == SelectionModeEnum.Multiple)
{
(element as UIEnumSwitchItem).MultipleSelection(true, SelectionAction.FirstSelection);
}
}
else
{
if (!UnselectedItems.Contains(item))
{
UnselectedItems.Add(item);
}
}
}
else if (SelectedItem != null)
{
if (Equals(item, SelectedItem))
{
if (SelectionMode == SelectionModeEnum.Single)
{
(element as UIEnumSwitchItem).SingleSelection(true, SelectionAction.FirstSelection);
}
else if (SelectionMode == SelectionModeEnum.MultipleWithDefault)
{
(element as UIEnumSwitchItem).MultipleSelectionWithDefault(true, SelectionAction.FirstSelection);
}
else if (SelectionMode == SelectionModeEnum.Multiple)
{
(element as UIEnumSwitchItem).MultipleSelection(true, SelectionAction.FirstSelection);
}
}
else
{
if (!UnselectedItems.Contains(item))
{
UnselectedItems.Add(item);
}
}
}
if (ShowDescriptionInTooltip)
{
if ((item as Enum).GetAttributeOfType <DescriptionAttribute>() != null)
{
var description = (item as Enum).GetAttributeOfType <DescriptionAttribute>().Description;
if (description != string.Empty)
{
(element as UIEnumSwitchItem).ToolTip = description;
}
}
}
if (SeparateItems)
{
BorderThickness = new Thickness(0);
(element as UIEnumSwitchItem).CornerRadius = CornerRadius;
(element as UIEnumSwitchItem).BorderThickness = new Thickness(1);
if (Items.Count == 1)
{
(element as UIEnumSwitchItem).Margin = new Thickness(0);
}
else if (Items.IndexOf(item) == 0)
{
(element as UIEnumSwitchItem).Margin = new Thickness(0, 0, 2, 0);
}
else if (Items.IndexOf(item) == Items.Count - 1)
{
(element as UIEnumSwitchItem).Margin = new Thickness(2, 0, 0, 0);
}
else
{
(element as UIEnumSwitchItem).Margin = new Thickness(2, 0, 2, 0);
}
}
else
{
(element as UIEnumSwitchItem).Margin = new Thickness(0);
if (Items.Count == 1)
{
(element as UIEnumSwitchItem).CornerRadius = CornerRadius;
(element as UIEnumSwitchItem).BorderThickness = new Thickness(1);
}
else if (Items.IndexOf(item) == 0)
{
(element as UIEnumSwitchItem).CornerRadius = new CornerRadius(CornerRadius.TopLeft, 0d, 0d, CornerRadius.BottomLeft);
(element as UIEnumSwitchItem).BorderThickness = new Thickness(1, 1, 0, 1);
}
else if (Items.IndexOf(item) == Items.Count - 1)
{
(element as UIEnumSwitchItem).CornerRadius = new CornerRadius(0d, CornerRadius.TopRight, CornerRadius.BottomRight, 0d);
(element as UIEnumSwitchItem).BorderThickness = new Thickness(0, 1, 1, 1);
}
else
{
(element as UIEnumSwitchItem).CornerRadius = new CornerRadius(0);
(element as UIEnumSwitchItem).BorderThickness = new Thickness(0, 1, 0, 1);
}
}
}