text: /*=========================================================================
  
     Program: ParaView
     Module:    pqSpreadSheetView.h
  
     Copyright (c) 2005-2008 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 __pqSpreadSheetView_h 
  #define __pqSpreadSheetView_h
  
  #include "pqView.h"
  
  class vtkSMSourceProxy;
  class pqDataRepresentation;
  class pqSpreadSheetViewModel;
  
  /// View for spread-sheet view. It can show data from any source/filter on the
  /// client. Uses pqSpreadSheetViewModel, pqSpreadSheetViewWidget and
  /// pqSpreadSheetViewSelectionModel.
  class PQCORE_EXPORT pqSpreadSheetView : public pqView
  {
    Q_OBJECT
    typedef pqView Superclass;
  public:
    static QString spreadsheetViewType() { return "SpreadSheetView"; }
    static QString spreadsheetViewTypeName() { return "Spreadsheet View"; }
  
  public:
    pqSpreadSheetView(const QString& group, const QString& name, 
      vtkSMViewProxy* viewModule, pqServer* server, 
      QObject* parent=NULL);
    virtual ~pqSpreadSheetView();
  
    /// Return a widget associated with this view.
    /// This view has no widget.
    virtual QWidget* getWidget();
  
    /// This view does not support saving to image.
    virtual bool saveImage(int /*width*/, int /*height*/, 
      const QString& /*filename*/)
      { return false; }
  
    /// This view does not support image capture, return 0;
    virtual vtkImageData* captureImage(int /*magnification*/)
      { return 0; }
    virtual vtkImageData* captureImage(const QSize& asize)
      { return this->Superclass::captureImage(asize); } 
    
    /// Currently, this view can show only Extraction filters.
    virtual bool canDisplay(pqOutputPort* opPort) const;
    
    /// Get the internal model for the view
    pqSpreadSheetViewModel* getViewModel();
  
  signals:
    /// Fired when the currently shown representation changes. \c repr may be
    /// NULL.
    void showing(pqDataRepresentation* repr);
  
  public slots:
    /// Called when a new repr is added.
    void onAddRepresentation(pqRepresentation*);
  
  protected slots:
    /// Called to ensure that at most 1 repr is visible at a time.
    void updateRepresentationVisibility(pqRepresentation* repr, bool visible);
  
    /// Called at start of every render. 
    /// If in "selection-only" mode, and showing composite dataset, we want to make
    /// sure that we are shown a block with non-empty cells/points (if possible).
    void onBeginRender();
  
    /// Called at end of every render. We update the table view.
    void onEndRender();
  
    /// When user creates a "surface" selection on the view.
    void onCreateSelection(vtkSMSourceProxy* selSource);
  
    /// Called when checkbox "Show Only Selected Elements" is updated
    void onSelectionOnly();
    
  private:
    pqSpreadSheetView(const pqSpreadSheetView&); // Not implemented.
    void operator=(const pqSpreadSheetView&); // Not implemented.
  
    class pqInternal;
    pqInternal* Internal;
  };
  
  #endif
  
  
  