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/*=========================================================================
Program: ParaView
Module: vtkSMLink.cxx
Copyright (c) Kitware, Inc.
All rights reserved.
See Copyright.txt or http://www.paraview.org/HTML/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkSMLink.h"
#include "vtkCommand.h"
#include "vtkObjectFactory.h"
#include "vtkPVSession.h"
#include "vtkSMMessage.h"
#include "vtkSMProperty.h"
#include "vtkSMProxy.h"
#include <list>
//-----------------------------------------------------------------------------
class vtkSMLinkObserver : public vtkCommand
{
public:
static vtkSMLinkObserver* New() { return new vtkSMLinkObserver; }
vtkSMLinkObserver()
{
this->Link = 0;
this->InProgress = false;
}
~vtkSMLinkObserver() { this->Link = 0; }
virtual void Execute(vtkObject* c, unsigned long event, void* pname)
{
if (this->InProgress)
{
return;
}
if (this->Link && !this->Link->GetEnabled())
{
return;
}
this->InProgress = true;
vtkSMProxy* caller = vtkSMProxy::SafeDownCast(c);
if (this->Link && caller)
{
if (event == vtkCommand::UpdateEvent && this->Link->GetPropagateUpdateVTKObjects())
{
this->Link->UpdateVTKObjects(caller);
}
else if (event == vtkCommand::PropertyModifiedEvent)
{
this->Link->PropertyModified(caller, (const char*)pname);
}
else if (event == vtkCommand::UpdatePropertyEvent)
{
this->Link->UpdateProperty(caller, reinterpret_cast<char*>(pname));
}
}
this->InProgress = false;
}
vtkSMLink* Link;
bool InProgress;
};
//-----------------------------------------------------------------------------
vtkSMLink::vtkSMLink()
{
vtkSMLinkObserver* obs = vtkSMLinkObserver::New();
obs->Link = this;
this->Observer = obs;
this->PropagateUpdateVTKObjects = 1;
this->Enabled = true;
this->State = new vtkSMMessage();
this->SetLocation(vtkPVSession::CLIENT);
this->State->SetExtension(DefinitionHeader::server_class, "vtkSIObject"); // Dummy SIObject
}
//-----------------------------------------------------------------------------
vtkSMLink::~vtkSMLink()
{
((vtkSMLinkObserver*)this->Observer)->Link = NULL;
this->Observer->Delete();
this->Observer = NULL;
delete this->State;
this->State = NULL;
}
//-----------------------------------------------------------------------------
void vtkSMLink::ObserveProxyUpdates(vtkSMProxy* proxy)
{
proxy->AddObserver(vtkCommand::PropertyModifiedEvent, this->Observer);
proxy->AddObserver(vtkCommand::UpdateEvent, this->Observer);
proxy->AddObserver(vtkCommand::UpdatePropertyEvent, this->Observer);
}
//-----------------------------------------------------------------------------
void vtkSMLink::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "Enabled: " << this->Enabled << endl;
os << indent << "PropagateUpdateVTKObjects: " << this->PropagateUpdateVTKObjects << endl;
}
//-----------------------------------------------------------------------------
void vtkSMLink::PushStateToSession()
{
if (!this->IsLocalPushOnly() && this->GetSession())
{
this->State->SetExtension(DefinitionHeader::client_class, this->GetClassName());
this->State->SetExtension(LinkState::propagate_update, (this->PropagateUpdateVTKObjects != 0));
this->State->SetExtension(LinkState::enabled, this->Enabled);
this->PushState(this->State);
}
}
//-----------------------------------------------------------------------------
const vtkSMMessage* vtkSMLink::GetFullState()
{
return this->State;
}
//-----------------------------------------------------------------------------
void vtkSMLink::LoadState(const vtkSMMessage* msg, vtkSMProxyLocator* locator)
{
this->Superclass::LoadState(msg, locator);
this->SetPropagateUpdateVTKObjects(msg->GetExtension(LinkState::propagate_update) ? 1 : 0);
this->SetEnabled(msg->GetExtension(LinkState::enabled) ? 1 : 0);
}
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