#pragma once

#ifndef TSELECTION_H

#define TSELECTION_H

#include "menubarcommand.h"

#include "tcommon.h"

#undef DVAPI

#undef DVVAR

#ifdef TOONZQT_EXPORTS

#define DVAPI DV_EXPORT_API

#define DVVAR DV_EXPORT_VAR

#else

#define DVAPI DV_IMPORT_API

#define DVVAR DV_IMPORT_VAR

#endif

class QMenu;

class QWidget;

#include <qmap></qmap>

//=============================================================================

// TSelection

//-----------------------------------------------------------------------------

class DVAPI TSelection {

public:

  class View {

  public:

    virtual ~View(){};

    virtual void onSelectionChanged() = 0;

    virtual void enableCommands() {}

  };

public:

  TSelection();

  virtual ~TSelection();

  // override this to define selection related commands

  virtual void enableCommands() {

    if (m_view) m_view->enableCommands();

  }

  // call selection handler enableCommand()

  void enableCommand(CommandId cmdId, CommandHandlerInterface *handler);

  // overridden enableCommands() will call enableCommand()

  template <class t=""></class>

  inline void enableCommand(T *target, CommandId cmdId, void (T::*method)()) {

    enableCommand(cmdId, new CommandHandlerHelper<t>(target, method));</t>

  }

  template <class r="" t,="" typename=""></class>

  inline void enableCommand(T *target, CommandId cmdId, void (T::*method)(R),

                            R value) {

    enableCommand(cmdId,

                  new CommandHandlerHelper2<t, r="">(target, method, value));</t,>

  }

  void makeCurrent();

  void makeNotCurrent();

  static TSelection *getCurrent();

  static void setCurrent(TSelection *selection);

  virtual bool isEmpty() const = 0;

  virtual void selectNone()    = 0;

  virtual bool addMenuActions(QMenu *menu) { return false; }

  void addMenuAction(QMenu *menu, CommandId cmdId);

  void setView(View *view) { m_view = view; }

  View *getView() const { return m_view; }

  void notifyView();

  // specify alternative command name when the selection is current.

  // the commands must be "Edit" category.

  const QMap<commandid, qstring=""> &alternativeCommandNames() {</commandid,>

    return m_alternativeCommandNames;

  }

private:

  View *m_view;

protected:

  QMap<commandid, qstring=""> m_alternativeCommandNames;</commandid,>

};

#endif  // TSELECTION_H