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#pragma once
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#ifndef TSELECTION_H
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#define TSELECTION_H
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#include "menubarcommand.h"
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#include "tcommon.h"
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#undef DVAPI
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#undef DVVAR
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#ifdef TOONZQT_EXPORTS
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#define DVAPI DV_EXPORT_API
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#define DVVAR DV_EXPORT_VAR
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#else
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#define DVAPI DV_IMPORT_API
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#define DVVAR DV_IMPORT_VAR
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#endif
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class QMenu;
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class QWidget;
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//=============================================================================
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// TSelection
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//-----------------------------------------------------------------------------
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class DVAPI TSelection {
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public:
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  class View {
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  public:
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    virtual ~View(){};
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    virtual void onSelectionChanged() = 0;
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    virtual void enableCommands() {}
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  };
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public:
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  TSelection();
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  virtual ~TSelection();
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  // override this to define selection related commands
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  virtual void enableCommands() {
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    if (m_view) m_view->enableCommands();
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  }
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  // call selection handler enableCommand()
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  void enableCommand(CommandId cmdId, CommandHandlerInterface *handler);
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  // overridden enableCommands() will call enableCommand()
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  template <class t=""></class>
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  inline void enableCommand(T *target, CommandId cmdId, void (T::*method)()) {
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    enableCommand(cmdId, new CommandHandlerHelper<t>(target, method));</t>
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  }
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  template <class r="" t,="" typename=""></class>
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  inline void enableCommand(T *target, CommandId cmdId, void (T::*method)(R),
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                            R value) {
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    enableCommand(cmdId,
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                  new CommandHandlerHelper2<t, r="">(target, method, value));</t,>
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  }
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  void makeCurrent();
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  void makeNotCurrent();
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  static TSelection *getCurrent();
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  static void setCurrent(TSelection *selection);
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  virtual bool isEmpty() const = 0;
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  virtual void selectNone()    = 0;
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  virtual bool addMenuActions(QMenu *menu) { return false; }
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  void addMenuAction(QMenu *menu, CommandId cmdId);
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  void setView(View *view) { m_view = view; }
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  View *getView() const { return m_view; }
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  void notifyView();
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private:
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  View *m_view;
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};
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#endif  // TSELECTION_H