protected virtual bool IsValidFillPreviewOperation(DockTarget dockTarget, ViewElement dockingView)
{
bool flag = false;
if (dockTarget != null && dockTarget.DockTargetType == DockTargetType.FillPreview && (DockOperations.AreDockRestrictionsFulfilled(dockingView, dockTarget.TargetElement) && dockTarget.TargetElement.AreDockTargetsEnabled))
{
flag = true;
}
return(flag);
}
private void UpdateDockPreview(DragAbsoluteEventArgs args, FloatingElement floatingElement)
{
DockManager.DockSiteHitTestResult hitElement = this.FindHitElement(args.ScreenPoint, (Predicate <DockManager.DockSite>)(s => s.Visual != floatingElement));
if (hitElement != null)
{
DockSiteAdorner ancestorOrSelf1 = Microsoft.VisualStudio.PlatformUI.ExtensionMethods.FindAncestorOrSelf <DockSiteAdorner>(hitElement.VisualHit);
DockAdornerWindow ancestorOrSelf2 = Microsoft.VisualStudio.PlatformUI.ExtensionMethods.FindAncestorOrSelf <DockAdornerWindow>(hitElement.VisualHit);
DockTarget ancestorOrSelf3 = Microsoft.VisualStudio.PlatformUI.ExtensionMethods.FindAncestorOrSelf <DockTarget>(hitElement.VisualHit);
FloatSite floatSite = floatingElement.Content as FloatSite;
DockDirection dockDirection = DockDirection.Fill;
FrameworkElement adornedElement = (FrameworkElement)null;
if (floatSite == null)
{
throw new InvalidOperationException("Dragging element must be a FloatSite");
}
if (floatSite.Child == null)
{
throw new InvalidOperationException("floatSite must have at least one child.");
}
ViewElement child = floatSite.Child;
if (this.IsValidFillPreviewOperation(ancestorOrSelf3, child))
{
dockDirection = DockDirection.Fill;
adornedElement = ancestorOrSelf3.AdornmentTarget == null ? (FrameworkElement)ancestorOrSelf3 : ancestorOrSelf3.AdornmentTarget;
}
if (ancestorOrSelf1 != null && ancestorOrSelf2 != null && ancestorOrSelf2.AdornedElement != null)
{
dockDirection = ancestorOrSelf1.DockDirection;
adornedElement = ancestorOrSelf2.AdornedElement;
if (!ancestorOrSelf1.CreatesDocumentGroup && dockDirection != DockDirection.Fill && adornedElement.DataContext is DocumentGroup)
{
adornedElement = (FrameworkElement)Microsoft.VisualStudio.PlatformUI.ExtensionMethods.FindAncestor <DocumentGroupContainerControl>((Visual)adornedElement);
}
}
if (adornedElement != null)
{
Rect dockPreviewRect = this.GetDockPreviewRect(dockDirection, adornedElement, child);
this.DockPreviewWindow.Left = dockPreviewRect.Left;
this.DockPreviewWindow.Top = dockPreviewRect.Top;
this.DockPreviewWindow.Width = dockPreviewRect.Width;
this.DockPreviewWindow.Height = dockPreviewRect.Height;
this.OnDockPreviewWindowShowing(this.DockPreviewWindow, dockDirection);
this.DockPreviewWindow.Show();
}
else
{
this.HideDockPreview();
}
}
else
{
this.HideDockPreview();
}
}
internal virtual DraggedTabInfo GetAutodockTarget(DragAbsoluteEventArgs args)
{
DraggedTabInfo draggedTabInfo = (DraggedTabInfo)null;
FloatingElement floatingElement = Microsoft.VisualStudio.PlatformUI.ExtensionMethods.FindAncestor <FloatingElement>((Visual)(args.OriginalSource as DragUndockHeader));
if (this.DraggedTabInfo != null && this.DraggedTabInfo.TabStripRect.Contains(args.ScreenPoint))
{
draggedTabInfo = this.DraggedTabInfo;
}
else
{
DockManager.DockSiteHitTestResult hitElement = this.FindHitElement(args.ScreenPoint, (Predicate <DockManager.DockSite>)(s =>
{
if (s.Visual != floatingElement)
{
return(!(s.Visual is DockAdornerWindow));
}
return(false);
}));
if (hitElement != null)
{
ReorderTabPanel reorderTabPanel = (ReorderTabPanel)null;
for (DependencyObject sourceElement = (DependencyObject)hitElement.VisualHit; sourceElement != null && reorderTabPanel == null; sourceElement = Microsoft.VisualStudio.PlatformUI.ExtensionMethods.GetVisualOrLogicalParent(sourceElement))
{
DockTarget dockTarget = sourceElement as DockTarget;
if (dockTarget != null && dockTarget.DockTargetType == DockTargetType.Auto && dockTarget.Visibility == Visibility.Visible)
{
reorderTabPanel = Microsoft.VisualStudio.PlatformUI.ExtensionMethods.FindDescendant <ReorderTabPanel>((DependencyObject)dockTarget);
}
}
if (reorderTabPanel != null)
{
draggedTabInfo = new DraggedTabInfo();
draggedTabInfo.TabStrip = reorderTabPanel;
draggedTabInfo.MeasureTabStrip();
ViewGroup viewGroup = reorderTabPanel.DataContext as ViewGroup;
if (viewGroup == null)
{
throw new InvalidOperationException("Reorder tab panel should always have ViewGroup as its DataContext.");
}
draggedTabInfo.NestedGroup = (ViewElement)viewGroup;
if (viewGroup.VisibleChildren.Count > 0)
{
draggedTabInfo.Sibling = viewGroup.VisibleChildren[0];
}
}
}
}
return(draggedTabInfo);
}
protected override void UpdateContentCore()
{
base.UpdateContentCore();
DockTarget adornedElement = base.AdornedElement as DockTarget;
if (adornedElement != null)
{
this.DockSiteType = adornedElement.DockSiteType;
SplitterItem splitterItem = adornedElement.FindAncestor <SplitterItem>();
if (splitterItem != null)
{
this.IsFirst = SplitterPanel.GetIsFirst(splitterItem);
this.IsLast = SplitterPanel.GetIsLast(splitterItem);
}
}
}
protected Orientation?GetTargetOrientation(DockTarget target)
{
Orientation?nullable = new Orientation?();
if (target.DockSiteType == DockSiteType.NonDraggable)
{
DocumentGroupContainer documentGroupContainer = target.TargetElement as DocumentGroupContainer;
if (documentGroupContainer == null)
{
DocumentGroup documentGroup = target.TargetElement as DocumentGroup;
if (documentGroup != null)
{
documentGroupContainer = documentGroup.Parent as DocumentGroupContainer;
}
}
if (documentGroupContainer != null && documentGroupContainer.VisibleChildren.Count > 1)
{
nullable = new Orientation?(documentGroupContainer.Orientation);
}
}
return(nullable);
}
public void PerformDrop(DragAbsoluteEventArgs args)
{
DragUndockHeader dragUndockHeader = args.OriginalSource as DragUndockHeader;
FloatingWindow floatingWindow = Microsoft.VisualStudio.PlatformUI.ExtensionMethods.FindAncestor <FloatingWindow>((Visual)dragUndockHeader);
DockManager.DockSiteHitTestResult hitElement = this.FindHitElement(args.ScreenPoint, (Predicate <DockManager.DockSite>)(s => s.Visual != floatingWindow));
if (hitElement != null)
{
DockSiteAdorner ancestorOrSelf1 = Microsoft.VisualStudio.PlatformUI.ExtensionMethods.FindAncestorOrSelf <DockSiteAdorner>(hitElement.VisualHit);
DockAdornerWindow ancestorOrSelf2 = Microsoft.VisualStudio.PlatformUI.ExtensionMethods.FindAncestorOrSelf <DockAdornerWindow>(hitElement.VisualHit);
DockTarget dockTarget = Microsoft.VisualStudio.PlatformUI.ExtensionMethods.FindAncestorOrSelf <DockTarget>(hitElement.VisualHit);
DockDirection dockDirection = DockDirection.Fill;
bool flag = false;
bool createDocumentGroup = false;
if (floatingWindow != null && this.IsValidFillPreviewOperation(dockTarget, dragUndockHeader.ViewElement))
{
dockDirection = DockDirection.Fill;
flag = true;
}
if (ancestorOrSelf1 != null && ancestorOrSelf2 != null && ancestorOrSelf2.AdornedElement != null)
{
dockDirection = ancestorOrSelf1.DockDirection;
dockTarget = ancestorOrSelf2.AdornedElement as DockTarget;
if (DockOperations.AreDockRestrictionsFulfilled(dragUndockHeader.ViewElement, dockTarget.TargetElement))
{
flag = true;
createDocumentGroup = ancestorOrSelf1.CreatesDocumentGroup;
}
}
if (flag)
{
PerformanceUtility.MeasurePerformanceUntilRender(PerformanceEvent.DockPalette);
dockTarget.RaiseEvent((RoutedEventArgs) new FloatingElementDockedEventArgs(DockManager.FloatingElementDockedEvent, dragUndockHeader.ViewElement, dockDirection, createDocumentGroup));
}
}
this.ClearAdorners();
}