(C++) WtServerPusherClient

 

 

 

 

 

 

Technical facts

 

Application type(s)

• Web application

Operating system(s) or programming environment(s)

• Lubuntu 11.04 (natty)

IDE(s):

• Qt Creator 2.0.1

Project type:

• Console application

C++ standard:

• C++11

Compiler(s):

• G++ 4.5.2

Libraries used:

• Boost: version 1.42
• STL: GNU ISO C++ Library, version 4.5.2
• Wt: version 3.1.9

 

 

 

 

 

wtserverpusherclient.cpp

 

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//--------------------------------------------------------------------------- /* WtServerPusherClient, client of WtServerPusher Copyright 2011 Richel Bilderbeek This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ //--------------------------------------------------------------------------- //From http://www.richelbilderbeek.nl/CppWtServerPusherClient.htm //--------------------------------------------------------------------------- #include <boost/bind.hpp> //--------------------------------------------------------------------------- #include <Wt/WApplication> //--------------------------------------------------------------------------- #include "wtserverpusher.h" #include "wtserverpusherclient.h" //--------------------------------------------------------------------------- WtServerPusherClient::WtServerPusherClient() {   Wt::WApplication::instance()->enableUpdates(true);   WtServerPusher::GetInstance()->Connect(     this,boost::bind(&WtServerPusherClient::OnServer,this));   //Never call virtual functions during construction or destroyion   //Scott Meyers, Effective C++, item 9   //OnServer(); } //--------------------------------------------------------------------------- WtServerPusherClient::~WtServerPusherClient() {   Wt::WApplication::instance()->enableUpdates(false);   WtServerPusher::GetInstance()->Disconnect(this); } //--------------------------------------------------------------------------- const std::string WtServerPusherClient::GetVersion() {   return "1.0"; } //--------------------------------------------------------------------------- const std::vector<std::string> WtServerPusherClient::GetVersionHistory() {   std::vector<std::string> v;   v.push_back("2011-07-27: version 1.0: initial version");   return v; } //--------------------------------------------------------------------------- void WtServerPusherClient::OnServer() {   OnServerPush();   Wt::WApplication::instance()->triggerUpdate(); } //---------------------------------------------------------------------------

 

 

 

 

 

wtserverpusherclient.h

 

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//--------------------------------------------------------------------------- #ifndef WTSERVERPUSHERCLIENT_H #define WTSERVERPUSHERCLIENT_H //--------------------------------------------------------------------------- #include <string> #include <vector> //--------------------------------------------------------------------------- ///WtServerPusherClient is a client responding to WtServerPusher ///and to be used as a base class struct WtServerPusherClient {   virtual ~WtServerPusherClient();   ///Get the version of this class   static const std::string GetVersion();   ///Get the version history of this class   static const std::vector<std::string> GetVersionHistory();   ///OnServerPush is called when the WtServerPusher is posted to   virtual void OnServerPush() = 0;   protected:   ///WtServerPusherClient constructor is protected   ///because it is to be used as a base class   WtServerPusherClient();   private:   ///Respond to the server   void OnServer(); }; //--------------------------------------------------------------------------- #endif // WTSERVERPUSHERCLIENT_H