// Token: 0x060056D1 RID: 22225 RVA: 0x00180420 File Offset: 0x0017E620
private static void OnIsSelectedChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
TabItem tabItem = d as TabItem;
bool flag = (bool)e.NewValue;
TabControl tabControlParent = tabItem.TabControlParent;
if (tabControlParent != null)
{
tabControlParent.RaiseIsSelectedChangedAutomationEvent(tabItem, flag);
}
if (flag)
{
tabItem.OnSelected(new RoutedEventArgs(Selector.SelectedEvent, tabItem));
}
else
{
tabItem.OnUnselected(new RoutedEventArgs(Selector.UnselectedEvent, tabItem));
}
if (flag)
{
Binding binding = new Binding("Margin");
binding.Source = tabItem;
BindingOperations.SetBinding(tabItem, KeyboardNavigation.DirectionalNavigationMarginProperty, binding);
}
else
{
BindingOperations.ClearBinding(tabItem, KeyboardNavigation.DirectionalNavigationMarginProperty);
}
tabItem.UpdateVisualState();
}
/// <summary>
/// TabStripPlacement property changed handler.
/// </summary>
/// <param name="d">
/// TabControl that changed its TabStripPlacement.
/// </param>
/// <param name="e">The DependencyPropertyChangedEventArgs.</param>
private static void OnTabStripPlacementPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
TabControl tc = (TabControl)d;
Debug.Assert(tc != null, "TabControl should not be null!");
tc.UpdateTabPanelLayout((Dock)e.OldValue, (Dock)e.NewValue);
foreach (object o in tc.Items)
{
TabItem tabItem = o as TabItem;
if (tabItem != null)
{
tabItem.UpdateVisualState();
}
}
}
private static void OnIsSelectedChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
TabItem tabItem = d as TabItem;
bool isSelected = (bool)e.NewValue;
TabControl parentTabControl = tabItem.TabControlParent;
if (parentTabControl != null)
{
parentTabControl.RaiseIsSelectedChangedAutomationEvent(tabItem, isSelected);
}
if (isSelected)
{
tabItem.OnSelected(new RoutedEventArgs(Selector.SelectedEvent, tabItem));
}
else
{
tabItem.OnUnselected(new RoutedEventArgs(Selector.UnselectedEvent, tabItem));
}
// KeyboardNavigation use bounding box reduced with DirectionalNavigationMargin when calculating the next element in directional navigation
// Because TabItem use negative margins some TabItems overlap which would changes the directional navigation if we don't reduce the bounding box
if (isSelected)
{
Binding binding = new Binding("Margin");
binding.Source = tabItem;
BindingOperations.SetBinding(tabItem, KeyboardNavigation.DirectionalNavigationMarginProperty, binding);
}
else
{
BindingOperations.ClearBinding(tabItem, KeyboardNavigation.DirectionalNavigationMarginProperty);
}
tabItem.UpdateVisualState();
}
/// <summary>
/// IsSelected changed handler
/// </summary>
/// <param name="d">TabItem that changed IsSelected.</param>
/// <param name="e">DependencyPropertyChangedEventArgs.</param>
private static void OnIsSelectedChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
TabItem tabItem = d as TabItem;
Debug.Assert(tabItem != null);
bool isSelected = (bool)e.NewValue;
RoutedEventArgs args = new RoutedEventArgs();
if (isSelected)
{
tabItem.OnSelected(args);
}
else
{
tabItem.OnUnselected(args);
}
// fire the IsSelectedChanged event for automation
if (AutomationPeer.ListenerExists(AutomationEvents.SelectionItemPatternOnElementSelected))
{
TabControl parentSelector = tabItem.TabControlParent;
if (parentSelector != null)
{
TabItemAutomationPeer tabItemPeer = GetTabItemAutomationPeer(tabItem);
if (tabItemPeer != null)
{
tabItemPeer.RaiseAutomationIsSelectedChanged(isSelected);
}
}
}
tabItem.IsTabStop = isSelected;
tabItem.UpdateVisualState();
}
protected override void OnItemsChanged(NotifyCollectionChangedEventArgs e)
{
base.OnItemsChanged(e);
switch (e.Action)
{
case NotifyCollectionChangedAction.Add:
int newSelectedIndex = -1;
foreach (object o in e.NewItems)
{
TabItem tabItem = o as TabItem;
if (tabItem == null)
{
throw new ArgumentException(string.Format(CultureInfo.InvariantCulture, System.Windows.Controls.Properties.Resources.TabControl_InvalidChild, o.GetType().ToString()));
}
int index = Items.IndexOf(tabItem);
InsertIntoTabPanel(index, tabItem);
// If we are adding a selected item
if (tabItem.IsSelected)
{
newSelectedIndex = index;
}
else if (SelectedItem != GetItemAtIndex(SelectedIndex))
{
newSelectedIndex = Items.IndexOf(SelectedItem);
}
else if ((_desiredIndex < Items.Count) && (_desiredIndex >= 0))
{
// Coercion Workaround
newSelectedIndex = _desiredIndex;
}
tabItem.UpdateVisualState();
}
if (newSelectedIndex == -1)
{
// If we are adding many items through xaml, one could
// already be specified as selected. If so, we don't
// want to override the value.
foreach (object item in Items)
{
TabItem tabItem = item as TabItem;
if (tabItem == null)
{
throw new ArgumentException(string.Format(CultureInfo.InvariantCulture, System.Windows.Controls.Properties.Resources.TabControl_InvalidChild, item.GetType().ToString()));
}
if (tabItem.IsSelected)
{
return;
}
}
// To follow WPF behavior, we only select the item if
// the user has not explicitly set the IsSelected field
// to false, or if there are 2 or more items in the
// TabControl.
if (Items.Count > 1 || ((Items[0] as TabItem).ReadLocalValue(TabItem.IsSelectedProperty) as bool?) != false)
{
newSelectedIndex = 0;
}
}
// When we add a new item into the selected position,
// SelectedIndex does not change, so we need to update both
// the SelectedItem and the SelectedIndex.
SelectedItem = GetItemAtIndex(newSelectedIndex);
SelectedIndex = newSelectedIndex;
break;
case NotifyCollectionChangedAction.Remove:
foreach (object o in e.OldItems)
{
TabItem tabItem = o as TabItem;
RemoveFromTabPanel(tabItem);
// if there are no items, the selected index is set to
// -1
if (Items.Count == 0)
{
SelectedIndex = -1;
}
else if (Items.Count <= SelectedIndex)
{
SelectedIndex = Items.Count - 1;
}
else
{
SelectedItem = GetItemAtIndex(SelectedIndex);
}
}
break;
case NotifyCollectionChangedAction.Reset:
ClearTabPanel();
SelectedIndex = -1;
// For Setting the ItemsSource
foreach (object item in Items)
{
TabItem tabItem = item as TabItem;
if (tabItem == null)
{
throw new ArgumentException(string.Format(CultureInfo.InvariantCulture, System.Windows.Controls.Properties.Resources.TabControl_InvalidChild, item.GetType().ToString()));
}
AddToTabPanel(tabItem);
if (tabItem.IsSelected)
{
SelectedItem = tabItem;
}
}
if (SelectedIndex == -1 && Items.Count > 0)
{
SelectedIndex = 0;
}
break;
case NotifyCollectionChangedAction.Replace:
break;
}
}
