private static void OnLostMouseCapture(object sender, MouseEventArgs e)
{
GroupNavigationControl groupNavigationControl = ( GroupNavigationControl )sender;
DependencyObject originalSource = e.OriginalSource as DependencyObject;
if (Mouse.Captured != groupNavigationControl)
{
if (e.OriginalSource == groupNavigationControl)
{
if ((Mouse.Captured == null) &&
(Nequeo.Wpf.Wpf.TreeHelper.IsDescendantOf(originalSource, groupNavigationControl)))
{
groupNavigationControl.Close();
}
}
else if ((originalSource != null) && (Nequeo.Wpf.Wpf.TreeHelper.IsDescendantOf(originalSource, groupNavigationControl)))
{
if ((groupNavigationControl.IsDropDownOpen) && (Mouse.Captured == null))
{
Mouse.Capture(groupNavigationControl, CaptureMode.SubTree);
e.Handled = true;
}
}
else
{
groupNavigationControl.Close();
}
}
}
private static void OnIsDropDownOpenChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
GroupNavigationControl groupNavigationControl = ( GroupNavigationControl )sender;
if (( bool )e.NewValue)
{
// To avoid lag while generating the control, we do
// a late binding of the items.
if (groupNavigationControl.ItemsSource == null)
{
Group group = groupNavigationControl.DataContext as Group;
if (group != null)
{
groupNavigationControl.ItemsSource = group.SiblingGroups;
}
}
Mouse.Capture(groupNavigationControl, CaptureMode.SubTree);
}
else
{
groupNavigationControl.ItemsSource = null;
if (groupNavigationControl.IsKeyboardFocusWithin)
{
groupNavigationControl.Focus();
}
if (Mouse.Captured == groupNavigationControl)
{
Mouse.Capture(null);
}
}
}
private static void OnMouseWheel(object sender, MouseWheelEventArgs e)
{
GroupNavigationControl groupNavigationControl = ( GroupNavigationControl )sender;
if (groupNavigationControl.IsDropDownOpen)
{
// This is to avoid scrolling any other list if the drop down is open.
// If not set, the grid could scroll while leaving the drop down in view.
// The dorp down will then be left alone while the GroupNavigationControl
// might not be in view anymore.
e.Handled = true;
}
}
private static void OnPreviewMouseButtonDown(object sender, MouseButtonEventArgs e)
{
GroupNavigationControl groupNavigationControl = ( GroupNavigationControl )sender;
Visual originalSource = e.OriginalSource as Visual;
if ((originalSource != null) &&
(groupNavigationControl.PartButton != null) &&
(groupNavigationControl.PartButton.IsAncestorOf(originalSource)))
{
if (groupNavigationControl.IsDropDownOpen)
{
groupNavigationControl.Close();
}
}
}
private static void OnMouseButtonDown(object sender, MouseButtonEventArgs e)
{
GroupNavigationControl groupNavigationControl = ( GroupNavigationControl )sender;
if (!groupNavigationControl.IsKeyboardFocusWithin)
{
groupNavigationControl.Focus();
}
e.Handled = true;
if ((Mouse.Captured == groupNavigationControl) && (e.OriginalSource == groupNavigationControl))
{
groupNavigationControl.Close();
}
}
private static void OnParentGridControlChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
GroupNavigationControl groupNavigationControl = sender as GroupNavigationControl;
if (groupNavigationControl == null)
{
return;
}
DataGridControl parentGridControl = e.NewValue as DataGridControl;
if (parentGridControl == null)
{
return;
}
groupNavigationControl.PrepareDefaultStyleKey(parentGridControl.GetView());
}
public GroupNavigationControlItem(GroupNavigationControl parentNavigationControl)
{
this.ParentNavigationControl = parentNavigationControl;
}
