HandlerChain_Exercise.cpp

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#include <iostream>
 
#include "HandlerChain_Exercise.h"
#include "HandlerChain_Class.h"
#include "HandlerChain_Message_Class.h"
#include "HandlerChain_MessageWindow_Class.h"
 
namespace // Anonymous
{
    using namespace DesignPatternExamples_cpp;
    
    void _HandlerChain_ConstructWindowChain(HandlerChain* handlerChain)
    {
        // Note: This creates each window and adds the new window to the given
        // HandlerChain object.
        //
        // This example doesn't care about each individual window so the
        // return value is ignored.
        MessageWindow::CreateWindow("Window 1", 0, 0, 10, 10, handlerChain);
        MessageWindow::CreateWindow("Window 2", 20, 0, 5, 5, handlerChain);
        MessageWindow::CreateWindow("Window 3", 30, 10, 15, 15, handlerChain);
    }
 
} // end namespace Anonmyous
 
 
namespace DesignPatternExamples_cpp
{
 
    // ! [Using HandlerChain in C++]
    void HandlerChain_Exercise()
    {
        std::cout << std::endl;
        std::cout << "HandlerChain Exercise" << std::endl;
 
        // Construct a handler chain and populate with windows that can
        // handle messages.
        HandlerChain::unique_ptr_t handlerChain = std::make_unique<HandlerChain>();
        _HandlerChain_ConstructWindowChain(handlerChain.get());
 
        std::cout << "  Handler Chain at start:" << std::endl;
        std::cout << handlerChain->ToString() << std::endl;
 
        // Now pass messages to the windows.
 
        std::cout << "  Select Window 2" << std::endl;
        handlerChain->SendMessage(std::make_unique<Message>(MessageType::ButtonDown, MessagePosition(22, 1)).get());
        handlerChain->SendMessage(std::make_unique<Message>(MessageType::ButtonUp, MessagePosition(22, 1)).get());
        std::cout << "  Current handler chain:" << std::endl;
        std::cout << handlerChain->ToString() << std::endl;
 
        std::cout << "  Select Window 3" << std::endl;
        handlerChain->SendMessage(std::make_unique<Message>(MessageType::ButtonDown, MessagePosition(35, 11)).get());
        handlerChain->SendMessage(std::make_unique<Message>(MessageType::ButtonUp, MessagePosition(35, 11)).get());
        std::cout << "  Current handler chain:" << std::endl;
        std::cout << handlerChain->ToString() << std::endl;
 
        std::cout << "  Select Window 1" << std::endl;
        handlerChain->SendMessage(std::make_unique<Message>(MessageType::ButtonDown, MessagePosition(4, 4)).get());
        handlerChain->SendMessage(std::make_unique<Message>(MessageType::ButtonUp, MessagePosition(4, 4)).get());
        std::cout << "  Current handler chain:" << std::endl;
        std::cout << handlerChain->ToString() << std::endl;
 
        std::cout << "  Close Window 2" << std::endl;
        handlerChain->SendMessage(std::make_unique<Message>(MessageType::ButtonDown, MessagePosition(24, 0)).get());
        handlerChain->SendMessage(std::make_unique<Message>(MessageType::ButtonUp, MessagePosition(24, 0)).get());
        std::cout << "  Current handler chain:" << std::endl;
        std::cout << handlerChain->ToString() << std::endl;
 
        std::cout << "  Done." << std::endl;
    }
    // ! [Using HandlerChain in C++]
 
} // end namespace