SimpleChatWidget.h

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// This may look like C code, but it's really -*- C++ -*-
/*
 * Copyright (C) 2008 Emweb bv, Herent, Belgium.
 *
 * See the LICENSE file for terms of use.
 */
 
#ifndef SIMPLECHATWIDGET_H_
#define SIMPLECHATWIDGET_H_
 
#include <Wt/WContainerWidget.h>
#include <Wt/WJavaScript.h>
#include <Wt/WSound.h>
 
#include "SimpleChatServer.h"
 
class ChatEvent;
 
 
class SimpleChatWidget : public Wt::WContainerWidget,
                         public SimpleChatServer::Client
{
public:
  SimpleChatWidget(SimpleChatServer& server);
 
  ~SimpleChatWidget();
 
  void connect();
  void disconnect();
 
 
  void letLogin();
 
  bool startChat(const Wt::WString& user);
 
  void logout();
 
  SimpleChatServer& server() { return server_; }
 
  int userCount() { return users_.size(); }
 
  const Wt::WString& userName() const { return user_; }
 
protected:
  virtual void createLayout(std::unique_ptr<Wt::WWidget> messages, std::unique_ptr<Wt::WWidget> userList,
                            std::unique_ptr<Wt::WWidget> messageEdit,
                            std::unique_ptr<Wt::WWidget> sendButton, std::unique_ptr<Wt::WWidget> logoutButton);
 
  virtual void updateUsers();
  virtual void newMessage();
 
  virtual void render(Wt::WFlags<Wt::RenderFlag> flags);
 
protected:
  bool loggedIn() const;
 
private:
  typedef std::map<Wt::WString, bool> UserMap;
  UserMap users_;
 
  SimpleChatServer&         server_;
  bool                      loggedIn_;
 
  Wt::JSlot                     clearInput_;
 
  Wt::WString                   user_;
 
  Wt::WLineEdit                *userNameEdit_;
  Wt::WText                    *statusMsg_;
 
  Wt::WContainerWidget         *messages_;
  Wt::WTextArea                *messageEdit_;
  Wt::Core::observing_ptr<Wt::WPushButton> sendButton_;
  Wt::Core::observing_ptr<Wt::WContainerWidget> userList_;
 
  std::unique_ptr<Wt::WSound>   messageReceived_;
 
  void login();
  void changeName(const Wt::WString& name);
  void send();
  void updateUser(Wt::WCheckBox *b);
 
  /* called from another session */
  void processChatEvent(const ChatEvent& event);
};
 
#endif // SIMPLECHATWIDGET