Design-patterns/Factory.cpp at master · beautifularea/Design-patterns · GitHub

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#ifndef Computer_hpp
#define Computer_hpp

#include <iostream>

class Computer
{
public:
    Computer(){}
    Computer(const Computer&){}
    Computer& operator=(const Computer&);
    virtual ~Computer(){}

public:
    virtual void Run() = 0;
    virtual void Stop() = 0;
};

class Laptop: public Computer
{
public:
    Laptop();
    Laptop(const Laptop&);
    Laptop& operator=(const Laptop&);
    virtual ~Laptop();

public:
    virtual void Run()
    {
        mHibernating = false;
    }

    virtual void Stop()
    {
        mHibernating = true;
    }

private:
    bool mHibernating;
};

class Desktop : public Computer
{
public:
    Desktop();
    Desktop(const Desktop&);
    Desktop& operator=(const Desktop&);
    virtual ~Desktop();

public:
    virtual void Run()
    {
        mOn = true;
    }

    virtual void Stop()
    {
        mOn = false;
    }

private:
    bool mOn;
};

class ComputerFactory
{
public:
    ComputerFactory();
    ComputerFactory(const ComputerFactory&);
    ComputerFactory& operator=(const ComputerFactory&);
    virtual ~ComputerFactory();

public:
    static Computer *newComputer(const std::string& description)
    {
        if(description == "laptop")
        {
            return new Laptop();
        }

        if(description == "desktop")
        {
            return new Desktop();
        }

        return nullptr;
    }
};


#endif /* Computer_hpp */