paraview-dev 4.0.1-1ubuntu1 / usr / include / paraview / pqPropertyWidget.h

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

   Program: ParaView
   Module: pqPropertyWidget.h

   Copyright (c) 2005-2012 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 _pqPropertyWidget_h
#define _pqPropertyWidget_h

#include "pqComponentsModule.h"

#include <QPointer>
#include <QWidget>

#include "pqPropertyLinks.h"
#include "pqDebug.h"

class pqPropertyWidgetDecorator;
class pqView;
class vtkSMDomain;
class vtkSMProperty;
class vtkSMProxy;

/// pqPropertyWidget represents a widget created for each property of a proxy on
/// the pqPropertiesPanel (for the proxy's properties or display properties).
class PQCOMPONENTS_EXPORT pqPropertyWidget : public QWidget
{
  Q_OBJECT

public:
  pqPropertyWidget(vtkSMProxy *proxy, QWidget *parent = 0);
  virtual ~pqPropertyWidget();

  virtual void apply();
  virtual void reset();

  /// These methods are called by pqPropertiesPanel when the panel for proxy
  /// becomes active/deactive.
  /// Only widgets that have 3D widgets need to
  /// override these methods to select/deselect the 3D widgets.
  /// Default implementation does nothing.
  virtual void select() {}
  virtual void deselect() {}

  pqView* view() const;
  vtkSMProxy* proxy() const;
  vtkSMProperty* property() const;

  bool showLabel() const;

  /// Description:
  /// This static utility method returns the XML name for an object as
  /// a QString. This allows for code to get the XML name of an object
  /// without having to explicitly check for a possibly NULL char* pointer.
  ///
  /// This is templated so that it will work with a variety of objects such
  /// as vtkSMProperty's and vtkSMDomain's. It can be called with anything
  /// that has a "char* GetXMLName()" method.
  ///
  /// For example, to get the XML name of a vtkSMIntRangeDomain:
  /// QString name = pqPropertyWidget::getXMLName(domain);
  template<class T>
  static QString getXMLName(T *object)
  {
    return QString(object->GetXMLName());
  }

  /// Provides access to the decorators for this widget.
  const QList<pqPropertyWidgetDecorator*>& decorators() const
    {
    return this->Decorators;
    }

signals:
  /// This signal is emitted when the current view changes.
  void viewChanged(pqView *view);

  /// This signal is fired as soon as the user starts editing in the widget. The
  /// editing may not be complete.
  void changeAvailable();

  /// This signal is fired as soon as the user is done with making an atomic
  /// change. changeAvailable() is always fired before changeFinished().
  void changeFinished();

public slots:
  virtual void updateDependentDomains();

  /// called to set the active view. This will fire the viewChanged() signal.
  virtual void setView(pqView*);

protected:
  void addPropertyLink(QObject *qobject,
                       const char *qproperty,
                       const char *qsignal,
                       vtkSMProperty *smproperty,
                       int smindex = -1);
  void setShowLabel(bool show);

  /// For most pqPropertyWidget subclasses a changeAvailable() signal,
  /// corresponds to a changeFinished() signal. Hence by default we connect the
  /// two together. For subclasses that don't follow this pattern should call
  /// this method with 'false' to disconnect changeAvailable() and
  /// changeFinished() signals. In that case, the subclass must explicitly fire
  /// changeFinished() signal.
  void setChangeAvailableAsChangeFinished(bool status)
    { this->ChangeAvailableAsChangeFinished = status; }

private:
  /// setAutoUpdateVTKObjects no longer simply passes the flag to
  /// pqPropertyLinks. Instead we set a flag so that when this->changeFinished()
  /// is fired, we call this->apply(). Thus makes it possible for widgets with
  /// AutoUpdateVTKObjects set to true handle editing of values correctly and
  /// not push the values as the values are being edited.
  void setAutoUpdateVTKObjects(bool autoUpdate);
  void setUseUncheckedProperties(bool useUnchecked);
  void setProperty(vtkSMProperty *property);

  void addDecorator(pqPropertyWidgetDecorator*);

  friend class pqPropertiesPanel;
  friend class pqPropertyWidgetDecorator;
  friend class pqProxyWidget;

private slots:
  /// check if changeFinished() must be fired as well.
  void onChangeAvailable();

  /// if AutoUpdateVTKObjects is true, call this->apply();
  void onChangeFinished();

private:
  vtkSMProxy *Proxy;
  vtkSMProperty *Property;
  QPointer<pqView> View;
  QList<pqPropertyWidgetDecorator*> Decorators;

  pqPropertyLinks Links;
  bool ShowLabel;
  bool ChangeAvailableAsChangeFinished;
  bool AutoUpdateVTKObjects;

  /// Deprecated signals. Making private so developers get errors when they
  /// use them.
  void modified();
  void editingFinished();
};

#define PV_DEBUG_PANELS() pqDebug("PV_DEBUG_PANELS")

#endif // _pqPropertyWidget_h