protected override void OnDragEnter(DragEventArgs de)
{
((MgTabControl)this.Control).IsDragging = true;
this.ForwardOnDrag = false;
/*"System.Windows.Forms.Design.Behavior.DropSourceBehavior.BehaviorDataObject"*/
// DropSourceBehavior.BehaviorDataObject data = de.Data as DropSourceBehavior.BehaviorDataObject;
Object data = de.Data;
if (data != null && ReflecionDesignHelper.IsAssignableFrom(data, "System.Windows.Forms.Design.Behavior.DropSourceBehavior+BehaviorDataObject", ReflecionDesignHelper.FormsAssembly))
{
int primaryControlIndex = -1;
//ArrayList sortedDragControls = data.GetSortedDragControls(ref primaryControlIndex);
//Use reflection
Type type = ReflecionDesignHelper.GetType("System.Windows.Forms.Design.Behavior.DropSourceBehavior+BehaviorDataObject", ReflecionDesignHelper.FormsAssembly);
System.Reflection.MethodInfo method = type.GetMethod("GetSortedDragControls", BindingFlags.NonPublic | BindingFlags.Instance);
object[] args = new object[1];
args[0] = primaryControlIndex;
ArrayList sortedDragControls = (ArrayList)method.Invoke(data, args);
if (sortedDragControls != null)
{
for (int i = 0; i < sortedDragControls.Count; i++)
{
if (!(sortedDragControls[i] is Control) || ((sortedDragControls[i] is Control) && !(sortedDragControls[i] is TabPage)))
{
this.ForwardOnDrag = true;
break;
}
}
}
}
else
{
this.ForwardOnDrag = true;
}
if (this.ForwardOnDrag)
{
TabPageDesigner selectedTabPageDesigner = this.GetSelectedTabPageDesigner();
if (selectedTabPageDesigner != null)
{
selectedTabPageDesigner.OnDragEnterInternal(de);
}
}
else
{
base.OnDragEnter(de);
}
}
protected TabPageDesigner GetSelectedTabPageDesigner()
{
TabPageDesigner designer = null;
TabPage selectedTab = ((TabControl)base.Component).SelectedTab;
if (selectedTab != null)
{
IDesignerHost service = (IDesignerHost)this.GetService(typeof(IDesignerHost));
if (service != null)
{
designer = service.GetDesigner(selectedTab) as TabPageDesigner;
}
}
return(designer);
}
protected override void OnGiveFeedback(GiveFeedbackEventArgs e)
{
if (this.ForwardOnDrag)
{
TabPageDesigner selectedTabPageDesigner = this.GetSelectedTabPageDesigner();
if (selectedTabPageDesigner != null)
{
selectedTabPageDesigner.OnGiveFeedbackInternal(e);
}
}
else
{
base.OnGiveFeedback(e);
}
}
protected override IComponent[] CreateToolCore(ToolboxItem tool, int x, int y, int width, int height, bool hasLocation, bool hasSize)
{
TabControl control = (TabControl)this.Control;
if (control.SelectedTab == null)
{
throw new ArgumentException("TabControlInvalidTabPageType");
}
IDesignerHost service = (IDesignerHost)this.GetService(typeof(IDesignerHost));
if (service != null)
{
TabPageDesigner toInvoke = (TabPageDesigner)service.GetDesigner(control.SelectedTab);
ParentControlDesigner.InvokeCreateTool(toInvoke, tool);
}
return(null);
}
protected override void OnDragLeave(EventArgs e)
{
if (this.ForwardOnDrag)
{
TabPageDesigner selectedTabPageDesigner = this.GetSelectedTabPageDesigner();
if (selectedTabPageDesigner != null)
{
selectedTabPageDesigner.OnDragLeaveInternal(e);
}
}
else
{
base.OnDragLeave(e);
}
this.ForwardOnDrag = false;
((MgTabControl)this.Control).IsDragging = false;
}
protected override void OnDragOver(DragEventArgs de)
{
if (this.ForwardOnDrag)
{
TabControl control = (TabControl)this.Control;
Point pt = this.Control.PointToClient(new Point(de.X, de.Y));
if (!control.DisplayRectangle.Contains(pt))
{
de.Effect = DragDropEffects.None;
}
else
{
TabPageDesigner selectedTabPageDesigner = this.GetSelectedTabPageDesigner();
if (selectedTabPageDesigner != null)
{
selectedTabPageDesigner.OnDragOverInternal(de);
}
}
}
else
{
base.OnDragOver(de);
}
}