source: src/Actions/Action.cpp@ b6dbff

/*
 * Action.cpp
 *
 *  Created on: Dec 8, 2009
 *      Author: crueger
 */

#include "Helpers/MemDebug.hpp"

#include <string>

#include "Actions/Action.hpp"
#include "Actions/ActionRegistry.hpp"
#include "Actions/ActionHistory.hpp"
#include "Helpers/MemDebug.hpp"

using namespace std;

Action::state_ptr getEmptyState() {
  return Action::state_ptr(Memory::ignore(new ActionState()));
}

// An empty state to indicate success
Action::state_ptr Action::success = getEmptyState();
Action::state_ptr Action::failure = getEmptyState();

Action::Action(std::string _name,bool _doRegister) :
name(_name)
{
  if(_doRegister){
    ActionRegistry::getInstance().registerAction(this);
  }
}

Action::~Action()
{}

const string Action::getName(){
  return name;
}

void Action::call(){
  if(!isActive()){
    return;
  }
  // forward to private virtual
  state_ptr state = performCall();
  if(shouldUndo() && state != failure){
    if(canUndo()){
      ActionHistory::getInstance().addElement(this,state);
    }
    else{
      ActionHistory::getInstance().clear();
    }
  }
}
Action::state_ptr Action::undo(state_ptr _state) {
  // forward to private virtual
  return performUndo(_state);
}
Action::state_ptr Action::redo(state_ptr _state) {
  // forward to private virtual
  return performRedo(_state);
}


bool Action::isActive(){
  return true;
}