command.hpp

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class Command
{
public:
  virtual void doAction() = 0;
  virtual void undoAction() = 0;
};

class CommandNewHotSpot;
class CommandSelectHotSpot;
class CommandSetSliderValue;
class CommandUnselect;

class CommandStack
{
public:
  void undoCommand()
  {
    if (mCommandStack.
  }
  void redoCommand();
  void doCommand(Command* pCommand)
  {
    if 
    mCommandStack.push_back(pCommand);
    pCommand->doAction();
    mUndo = mCommandStack.end();
  }
private:
  std::vector<Command*> mCommandStack;
  std::vector<Command*>::iterator mIterator;
};

class CommandNewHotSpot : public Command
{
public:
  CommandSelectHotSpot(FunctionMixer* pFunctionMixer, HotSpot* pHotSpot)
    : mpFunctionMixer(pFunctionMixer)
    , mpHotSpot(pHotSpot)
  {
  }
  void doAction()
  {
    mpFunctionMixer->add(mpHotSpot);
  }
  void undoAction()
  {
    mpFunctionMixer->unselect(mpHotSpot);
  }

private:
  FunctionMixer* mpFunctionMixer;
  HotSpot* mpHotSpot;
};

class CommandSelectHotSpot : public Command
{
public:
  CommandSelectHotSpot(FunctionMixer* pFunctionMixer, HotSpot* pHotSpot)
    : mpFunctionMixer(pFunctionMixer)
    , mpHotSpot(pHotSpot)
  {
  }
  void doAction()
  {
    mpFunctionMixer->select(mpHotSpot);
  }
  void undoAction()
  {
    mpFunctionMixer->unselect(mpHotSpot);
  }
private:
  FunctionMixer* mpFunctionMixer;
  HotSpot* mpHotSpot;
};

class CommandSetSliderValue : public Command
{
public:
  CommandSetSliderValue(Slider* pSlider, double value)
  {

  }
};