/// <summary>
/// A virtual function that is called when the selection is changed. Default behavior
/// is to raise a SelectionChangedEvent
/// </summary>
/// <param name="e">The inputs for this event. Can be raised (default behavior) or processed
/// in some other way.</param>
protected override void OnSelectionChanged(SelectionChangedEventArgs e)
{
base.OnSelectionChanged(e);
if (IsKeyboardFocusWithin)
{
// If keyboard focus is within the control, make sure it is going to the correct place
TabItem item = GetSelectedTabItem();
if (item != null)
{
item.SetFocus();
}
}
UpdateSelectedContent();
if (AutomationPeer.ListenerExists(AutomationEvents.SelectionPatternOnInvalidated) ||
AutomationPeer.ListenerExists(AutomationEvents.SelectionItemPatternOnElementSelected) ||
AutomationPeer.ListenerExists(AutomationEvents.SelectionItemPatternOnElementAddedToSelection) ||
AutomationPeer.ListenerExists(AutomationEvents.SelectionItemPatternOnElementRemovedFromSelection))
{
TabControlAutomationPeer peer = UIElementAutomationPeer.CreatePeerForElement(this) as TabControlAutomationPeer;
if (peer != null)
{
peer.RaiseSelectionEvents(e);
}
}
}
/// <summary>
/// This is the method that responds to the KeyDown event.
/// </summary>
/// <param name="e"></param>
protected override void OnKeyDown(KeyEventArgs e)
{
TabItem nextTabItem = null;
// Handle [Ctrl][Shift]Tab, Home and End cases
// We have special handling here because if focus is inside the TabItem content we cannot
// cycle through TabItem because the content is not part of the TabItem visual tree
int direction = 0;
int startIndex = -1;
switch (e.Key)
{
case Key.Tab:
if ((e.KeyboardDevice.Modifiers & ModifierKeys.Control) == ModifierKeys.Control)
{
startIndex = ItemContainerGenerator.IndexFromContainer(ItemContainerGenerator.ContainerFromItem(SelectedItem));
if ((e.KeyboardDevice.Modifiers & ModifierKeys.Shift) == ModifierKeys.Shift)
{
direction = -1;
}
else
{
direction = 1;
}
}
break;
case Key.Home:
direction = 1;
startIndex = -1;
break;
case Key.End:
direction = -1;
startIndex = Items.Count;
break;
}
nextTabItem = FindNextTabItem(startIndex, direction);
if (nextTabItem != null && nextTabItem != SelectedItem)
{
e.Handled = nextTabItem.SetFocus();
}
if (!e.Handled)
{
base.OnKeyDown(e);
}
}
/// <summary>
/// A virtual function that is called when the selection is changed. Default behavior
/// is to raise a SelectionChangedEvent
/// </summary>
/// <param name="e">The inputs for this event. Can be raised (default behavior) or processed
/// in some other way.</param>
protected override void OnSelectionChanged(SelectionChangedEventArgs e)
{
if (MS.Internal.FrameworkAppContextSwitches.SelectionPropertiesCanLagBehindSelectionChangedEvent)
{
// old ("useless") behavior, retained for app-compat
base.OnSelectionChanged(e);
if (IsKeyboardFocusWithin)
{
// If keyboard focus is within the control, make sure it is going to the correct place
TabItem item = GetSelectedTabItem();
if (item != null)
{
item.SetFocus();
}
}
UpdateSelectedContent();
}
else
{
// new behavior (DDVSO 208019) - change SelectedContent and focus
// before raising SelectionChanged.
bool isKeyboardFocusWithin = IsKeyboardFocusWithin;
UpdateSelectedContent();
if (isKeyboardFocusWithin)
{
// If keyboard focus is within the control, make sure it is going to the correct place
TabItem item = GetSelectedTabItem();
if (item != null)
{
item.SetFocus();
}
}
base.OnSelectionChanged(e);
}
if (AutomationPeer.ListenerExists(AutomationEvents.SelectionPatternOnInvalidated) ||
AutomationPeer.ListenerExists(AutomationEvents.SelectionItemPatternOnElementSelected) ||
AutomationPeer.ListenerExists(AutomationEvents.SelectionItemPatternOnElementAddedToSelection) ||
AutomationPeer.ListenerExists(AutomationEvents.SelectionItemPatternOnElementRemovedFromSelection))
{
TabControlAutomationPeer peer = UIElementAutomationPeer.CreatePeerForElement(this) as TabControlAutomationPeer;
if (peer != null)
{
peer.RaiseSelectionEvents(e);
}
}
}
/// <summary>Provides class handling for the <see cref="E:System.Windows.ContentElement.KeyDown" /> routed event that occurs when the user presses a key.</summary>
/// <param name="e">Provides data for <see cref="T:System.Windows.Input.KeyEventArgs" />.</param>
// Token: 0x060056C4 RID: 22212 RVA: 0x0017FF88 File Offset: 0x0017E188
protected override void OnKeyDown(KeyEventArgs e)
{
int direction = 0;
int startIndex = -1;
Key key = e.Key;
if (key != Key.Tab)
{
if (key != Key.End)
{
if (key == Key.Home)
{
direction = 1;
startIndex = -1;
}
}
else
{
direction = -1;
startIndex = base.Items.Count;
}
}
else if ((e.KeyboardDevice.Modifiers & ModifierKeys.Control) == ModifierKeys.Control)
{
startIndex = base.ItemContainerGenerator.IndexFromContainer(base.ItemContainerGenerator.ContainerFromItem(base.SelectedItem));
if ((e.KeyboardDevice.Modifiers & ModifierKeys.Shift) == ModifierKeys.Shift)
{
direction = -1;
}
else
{
direction = 1;
}
}
TabItem tabItem = this.FindNextTabItem(startIndex, direction);
if (tabItem != null && tabItem != base.SelectedItem)
{
e.Handled = tabItem.SetFocus();
}
if (!e.Handled)
{
base.OnKeyDown(e);
}
}
/// <summary>Raises the <see cref="E:System.Windows.Controls.Primitives.Selector.SelectionChanged" /> routed event. </summary>
/// <param name="e">Provides data for <see cref="T:System.Windows.Controls.SelectionChangedEventArgs" />. </param>
// Token: 0x060056C2 RID: 22210 RVA: 0x0017FE90 File Offset: 0x0017E090
protected override void OnSelectionChanged(SelectionChangedEventArgs e)
{
if (FrameworkAppContextSwitches.SelectionPropertiesCanLagBehindSelectionChangedEvent)
{
base.OnSelectionChanged(e);
if (base.IsKeyboardFocusWithin)
{
TabItem selectedTabItem = this.GetSelectedTabItem();
if (selectedTabItem != null)
{
selectedTabItem.SetFocus();
}
}
this.UpdateSelectedContent();
}
else
{
bool isKeyboardFocusWithin = base.IsKeyboardFocusWithin;
this.UpdateSelectedContent();
if (isKeyboardFocusWithin)
{
TabItem selectedTabItem2 = this.GetSelectedTabItem();
if (selectedTabItem2 != null)
{
selectedTabItem2.SetFocus();
}
}
base.OnSelectionChanged(e);
}
if (AutomationPeer.ListenerExists(AutomationEvents.SelectionPatternOnInvalidated) || AutomationPeer.ListenerExists(AutomationEvents.SelectionItemPatternOnElementSelected) || AutomationPeer.ListenerExists(AutomationEvents.SelectionItemPatternOnElementAddedToSelection) || AutomationPeer.ListenerExists(AutomationEvents.SelectionItemPatternOnElementRemovedFromSelection))
{
TabControlAutomationPeer tabControlAutomationPeer = UIElementAutomationPeer.CreatePeerForElement(this) as TabControlAutomationPeer;
if (tabControlAutomationPeer != null)
{
tabControlAutomationPeer.RaiseSelectionEvents(e);
}
}
}