ProjectSelectionManager.h

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/**********************************************************************
 
Audacity: A Digital Audio Editor
 
ProjectSelectionManager.cpp
 
Paul Licameli split from ProjectManager.cpp
 
**********************************************************************/
 
#ifndef __AUDACITY_PROJECT_SELECTION_MANAGER__
#define __AUDACITY_PROJECT_SELECTION_MANAGER__
 
#include "ClientData.h" // to inherit
#include "Observer.h"
#include "ComponentInterfaceSymbol.h"
#include "Observer.h"
 
class AudacityProject;
struct ProjectNumericFormatsEvent;
 
 
class TIME_FREQUENCY_SELECTION_API ProjectSelectionManager final
   : public ClientData::Base
{
public:
   static ProjectSelectionManager &Get( AudacityProject &project );
   static const ProjectSelectionManager &Get( const AudacityProject &project );
 
   explicit ProjectSelectionManager(AudacityProject &project);
   ProjectSelectionManager(const ProjectSelectionManager &) = delete;
   ProjectSelectionManager &operator=(
      const ProjectSelectionManager &) = delete;
   ~ProjectSelectionManager() override;
 
   void ModifySelection(double &start, double &end, bool done);
   void ModifySpectralSelection(double nyquist,
      double &bottom, double &top, bool done);
 
private:
   void OnFormatsChanged(ProjectNumericFormatsEvent);
 
   void SetSelectionFormat(const NumericFormatID & format);
   void SetAudioTimeFormat(const NumericFormatID & format);
   void SetFrequencySelectionFormatName(
      const NumericFormatID & formatName);
   void SetBandwidthSelectionFormatName(
      const NumericFormatID & formatName);
 
   void SnapSelection();
 
   Observer::Subscription mFormatsSubscription;
   AudacityProject &mProject;
 
   Observer::Subscription mSnappingChangedSubscription;
   Observer::Subscription mTimeSignatureChangedSubscription;
   Observer::Subscription mProjectRateChangedSubscription;
};
 
#endif