private ActiveXContainer CreateActiveXContainer()
{
if (this.activeXContainer == null)
{
this.activeXContainer = new ActiveXContainer(this);
}
return(this.activeXContainer);
}
private ActiveXContainer GetParentContainer()
{
if (this.container == null)
{
this.container = ActiveXContainer.FindContainerForControl(this);
}
if (this.container == null)
{
this.container = this.CreateActiveXContainer();
this.container.AddControl(this);
}
return(this.container);
}
internal static ActiveXContainer FindContainerForControl(ActiveXBase <TActiveXClass, TActiveXInterface> control)
{
if (control != null)
{
if (control.container != null)
{
return(control.container);
}
if (control.ContainingControl != null)
{
ActiveXContainer container = control.CreateActiveXContainer();
if (container.RegisterControl(control))
{
container.AddControl(control);
return(container);
}
}
}
return(null);
}
private void ChangeActiveXStateDownTo(ActiveXHelper.ActiveXState state)
{
if (!this.GetActiveXHostState(ActiveXHelper.InTransition))
{
this.SetActiveXHostState(ActiveXHelper.InTransition, true);
try
{
while (state < this.activeXState)
{
switch (this.activeXState)
{
case ActiveXHelper.ActiveXState.Loaded:
this.numberOfComponentChangeEvents++;
try
{
if (this.activeXInstance != null)
{
this.DetachInterfacesInternal();
Marshal.FinalReleaseComObject(this.activeXInstance);
this.activeXInstance = null;
}
}
finally
{
this.numberOfComponentChangeEvents--;
}
this.activeXState = ActiveXHelper.ActiveXState.Passive;
continue;
case ActiveXHelper.ActiveXState.Running:
this.StopEvents();
ActiveXContainer activeXContainer = this.GetParentContainer();
if (activeXContainer != null)
{
activeXContainer.RemoveControl(this);
}
this.activeXOleObject.SetClientSite(null);
this.activeXState = ActiveXHelper.ActiveXState.Loaded;
continue;
case (ActiveXHelper.ActiveXState.Running | ActiveXHelper.ActiveXState.Loaded):
break;
case ActiveXHelper.ActiveXState.InPlaceActive:
ContainerControl containingControl = this.ContainingControl;
if ((containingControl != null) && (containingControl.ActiveControl == this))
{
ContainerControlShim.SetActiveControlInternal(containingControl, null);
}
this.activeXOleInPlaceObject.InPlaceDeactivate();
this.activeXState = ActiveXHelper.ActiveXState.Running;
continue;
case ActiveXHelper.ActiveXState.UIActive:
this.activeXOleInPlaceObject.UIDeactivate();
this.activeXState = ActiveXHelper.ActiveXState.InPlaceActive;
continue;
}
this.activeXState -= ActiveXHelper.ActiveXState.Loaded;
}
}
finally
{
this.SetActiveXHostState(ActiveXHelper.InTransition, false);
}
}
}
