cpp11chat/chat_window.hpp

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#pragma once
#include <QWidget>
#include <QGridLayout>
#include <QLineEdit>
#include <QListWidget>
#include <boost/asio.hpp>
#include <thread>
#include "chat_networking.hpp"
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struct receive_policy_ignore
{
static void message_do_what(const chat::chat_message& msg) {}
static void handshake_do_what(const chat::chat_message& msg) {}
static void serverdirection_do_what(const chat::chat_message& msg) {}
static void login_do_what(const chat::chat_message& msg) {}
static void logout_do_what(const chat::chat_message& msg) {}
static void invalid_msg_do_what(const chat::chat_message& msg)
{ throw std::runtime_error("Invalid message received!"); }
};
struct send_policy_ignore
{
/* this is handled in the gui: QLineEdit.setMaxLength() */
static bool check_msg_length(const chat::chat_message& msg)
{ return true; }
};
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class chat_window : public QWidget
{
Q_OBJECT
QGridLayout* _layout;
QListWidget* _chat;
QListWidget* _people;
QLineEdit* _msg;
boost::asio::io_service _ios;
boost::asio::ip::tcp::resolver::query _query;
chat::client_network_manager<receive_policy_ignore, send_policy_ignore> _cnm;
std::thread _iosthread;
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public:
explicit chat_window(QWidget* parent = 0)
:QWidget(parent), _ios(), _query("infoc.eet.bme.hu", "8888"),
_cnm(_ios, boost::asio::ip::tcp::resolver(_ios).resolve(_query), "BATMAN"),
_iosthread([this]{ _ios.run(); })
{
_cnm.subscribe(std::bind(&chat_window::receive_handler, this, std::placeholders::_1));
setupUi();
}
void receive_handler(chat::chat_message msg)
{
switch (msg.get_header())
{
case chat::message::MESSAGE:
case chat::message::SERVER_DIRECTION:
_chat->addItem(msg.get_content().c_str());
break;
case chat::message::LOGIN:
_people->addItem(msg.get_content().c_str());
break;
case chat::message::LOGOUT:
auto list = _people->findItems(msg.get_content().c_str(), Qt::MatchExactly);
if (list.size() > 0)
delete list[0];
break;
}
}
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public slots:
void return_handler()
{
_chat->addItem(_msg->text());
_cnm.send(chat::chat_message(chat::message::MESSAGE, _msg->text().toStdString()));
_msg->clear();
};
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private:
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void setupUi()
{
this->setWindowTitle("C++11Chat");
this->setMinimumSize(1000, 500);
_layout = new QGridLayout();
_chat = new QListWidget();
_people = new QListWidget();
_msg = new QLineEdit();
_msg->setMaxLength(220);
connect(_msg, &QLineEdit::returnPressed, this, &chat_window::return_handler);
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_layout->addWidget(_chat, 0, 0, 1, 1);
_layout->addWidget(_people, 0, 1, 1, 2);
_layout->addWidget(_msg, 1, 0, 1, 3);
this->setLayout(_layout);
}
void closeEvent(QCloseEvent* event)
{
_cnm.close_connection();
_iosthread.join();
}
};