protected override void OnPreviewMouseLeftButtonDown(MouseButtonEventArgs e)
{
base.OnPreviewMouseLeftButtonDown(e);
lock (_mutex)
{
if (ParentTabControl == null || ParentTabControl.Items.Count <= 1 || !ParentTabControl.CanMoveTabs)
{
return;
}
_startPos = e.GetPosition(this);
var tab = GetTabItem(_startPos);
if (tab == null)
{
return;
}
_tabStatuses = null;
tab.IsSelected = true;
var draggedTabInsidePos = TranslatePoint(_startPos, tab);
_minMoveX = draggedTabInsidePos.X + tab.Margin.Left;
_maxMoveX = this.ActualWidth - tab.ActualWidth + draggedTabInsidePos.X;
_draggedTab = tab;
this.CaptureMouse();
}
}
protected override void OnPreviewMouseLeftButtonUp(MouseButtonEventArgs e)
{
base.OnPreviewMouseLeftButtonUp(e);
if (_draggedTab == null)
{
return;
}
if (_draggedTab.IsDragging)
{
_draggedTab.StopDragging();
bool isFound = false;
int draggedTabNewIndex = -1;
for (int i = 0; i < ParentTabControl.Items.Count; i++)
{
if (!isFound)
{
if (_tabStatuses[i].IsChanged)
{
isFound = true;
draggedTabNewIndex = i;
}
}
else
{
if (draggedTabNewIndex > _draggedTab.Index && _tabStatuses[i].IsChanged)
{
draggedTabNewIndex = i;
}
}
var tabItem = ParentTabControl.ItemContainerGenerator.ContainerFromIndex(i) as TabItemEx;
Animations.TranslateX(tabItem, 0, _timeSpanZero);
}
if (isFound)
{
ParentTabControl.MoveItem(_draggedTab.Index, draggedTabNewIndex);
}
}
this.ReleaseMouseCapture();
_draggedTab = null;
}
public ClosingItemEventArgs(TabItemEx tabItem, object item)
{
TabItemEx = tabItem;
Item = item;
}
