private void OnselectionModelChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
if (e.PropertyName == "SelectedIndices")
{
bool oldValue = IsSelected;
var groupIndex = GetGroupIndex();
bool newValue = groupIndex >= 0 ? SelectionModel.IsSelected(groupIndex, RepeatedIndex).Value : false;
if (oldValue != newValue)
{
IsSelected = newValue;
// AutomationEvents.PropertyChanged is used as a value that means dont raise anything
AutomationEvents eventToRaise =
oldValue ?
(SelectionModel.SingleSelect ? AutomationEvents.PropertyChanged : AutomationEvents.SelectionItemPatternOnElementRemovedFromSelection) :
(SelectionModel.SingleSelect ? AutomationEvents.SelectionItemPatternOnElementSelected : AutomationEvents.SelectionItemPatternOnElementAddedToSelection);
if (eventToRaise != AutomationEvents.PropertyChanged && AutomationPeer.ListenerExists(eventToRaise))
{
var peer = FrameworkElementAutomationPeer.CreatePeerForElement(this);
peer.RaiseAutomationEvent(eventToRaise);
}
}
}
}
protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)
{
if (SelectionModel != null)
{
if (Keyboard.Modifiers.HasFlag(ModifierKeys.Shift) && !SelectionModel.SingleSelect)
{
if (Keyboard.Modifiers.HasFlag(ModifierKeys.Control))
{
SelectionModel.DeselectRangeFromAnchor(RepeatedIndex);
}
else
{
SelectionModel.SelectRangeFromAnchor(RepeatedIndex);
}
}
else if (Keyboard.Modifiers.HasFlag(ModifierKeys.Control))
{
if (SelectionModel.IsSelected(RepeatedIndex).Value)
{
SelectionModel.Deselect(RepeatedIndex);
}
else
{
SelectionModel.Select(RepeatedIndex);
}
}
else
{
SelectionModel.Select(RepeatedIndex);
this.Focus();
}
}
base.OnMouseLeftButtonDown(e);
}