pqActiveObjects.h

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/*=========================================================================

   Program: ParaView
   Module:    pqActiveObjects.h

   Copyright (c) 2005,2006 Sandia Corporation, Kitware Inc.
   All rights reserved.

   ParaView is a free software; you can redistribute it and/or modify it
   under the terms of the ParaView license version 1.2.

   See License_v1.2.txt for the full ParaView license.
   A copy of this license can be obtained by contacting
   Kitware Inc.
   28 Corporate Drive
   Clifton Park, NY 12065
   USA

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

========================================================================*/
#ifndef pqActiveObjects_h
#define pqActiveObjects_h

#include "pqComponentsModule.h"
#include <QObject>
#include <QPointer>

#include "pqDataRepresentation.h"
#include "pqOutputPort.h"
#include "pqPipelineSource.h"
#include "pqProxySelection.h"
#include "pqServer.h"
#include "pqView.h"

class vtkEventQtSlotConnect;
class vtkSMProxySelectionModel;
class vtkSMSessionProxyManager;
class vtkSMViewLayoutProxy;

class PQCOMPONENTS_EXPORT pqActiveObjects : public QObject
{
  Q_OBJECT
  typedef QObject Superclass;

public:
  static pqActiveObjects& instance();

  pqView* activeView() const { return this->ActiveView; }

  pqPipelineSource* activeSource() const { return this->ActiveSource; }

  pqOutputPort* activePort() const { return this->ActivePort; }

  pqServer* activeServer() const { return this->ActiveServer; }

  pqDataRepresentation* activeRepresentation() const { return this->ActiveRepresentation; }

  vtkSMProxySelectionModel* activeSourcesSelectionModel() const
  {
    return this->activeServer() ? this->activeServer()->activeSourcesSelectionModel() : NULL;
  }

  const pqProxySelection& selection() const { return this->Selection; }

  vtkSMSessionProxyManager* proxyManager() const;

  vtkSMViewLayoutProxy* activeLayout() const;

  int activeLayoutLocation() const;

public slots:
  void setActiveView(pqView* view);
  void setActiveSource(pqPipelineSource* source);
  void setActivePort(pqOutputPort* port);
  void setActiveServer(pqServer*);
  void onActiveServerChanged();

  void setSelection(const pqProxySelection& selection, pqServerManagerModelItem* current);

signals:
  void serverChanged(pqServer*);
  void viewChanged(pqView* view);
  void sourceChanged(pqPipelineSource*);
  void portChanged(pqOutputPort*);
  void representationChanged(pqDataRepresentation*);
  void representationChanged(pqRepresentation*);
  void selectionChanged(const pqProxySelection&);

  void dataUpdated();

private slots:
  void serverAdded(pqServer*);

  void serverRemoved(pqServer*);

  void proxyRemoved(pqServerManagerModelItem*);

  void updateRepresentation();

  void sourceSelectionChanged();
  void viewSelectionChanged();

protected:
  pqActiveObjects();
  ~pqActiveObjects() override;

  void triggerSignals();

private:
  Q_DISABLE_COPY(pqActiveObjects)

  
  void resetActives();

  QPointer<pqServer> ActiveServer;
  QPointer<pqPipelineSource> ActiveSource;
  QPointer<pqOutputPort> ActivePort;
  QPointer<pqView> ActiveView;
  QPointer<pqDataRepresentation> ActiveRepresentation;
  pqProxySelection Selection;

  // these are void* maintained to detect when values have changed.
  void* CachedServer;
  void* CachedSource;
  void* CachedPort;
  void* CachedView;
  void* CachedRepresentation;
  pqProxySelection CachedSelection;

  vtkEventQtSlotConnect* VTKConnector;
};

#endif