(C++) WtTimedServerPusherClient

 

 

 

 

 

 

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

 

 

 

 

 

wttimedserverpusherclient.cpp

 

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//--------------------------------------------------------------------------- /* WtTimedServerPusherClient, client of WtTimedServerPusher 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/CppWtTimedServerPusherClient.htm //--------------------------------------------------------------------------- #include <boost/bind.hpp> //--------------------------------------------------------------------------- #include <Wt/WApplication> //--------------------------------------------------------------------------- #include "wttimedserverpusher.h" #include "wttimedserverpusherclient.h" //--------------------------------------------------------------------------- WtTimedServerPusherClient::WtTimedServerPusherClient() {   Wt::WApplication::instance()->enableUpdates(true);   WtTimedServerPusher::GetInstance()->Connect(     this,boost::bind(&WtTimedServerPusherClient::OnServer,this));   //Never call virtual functions during construction or destroyion   //Scott Meyers, Effective C++, item 9   //OnServer(); } //--------------------------------------------------------------------------- WtTimedServerPusherClient::~WtTimedServerPusherClient() {   Wt::WApplication::instance()->enableUpdates(false);   WtTimedServerPusher::GetInstance()->Disconnect(this); } //--------------------------------------------------------------------------- const std::string WtTimedServerPusherClient::GetVersion() {   return "1.0"; } //--------------------------------------------------------------------------- const std::vector<std::string> WtTimedServerPusherClient::GetVersionHistory() {   std::vector<std::string> v;   v.push_back("2011-08-05: version 1.0: initial version");   return v; } //--------------------------------------------------------------------------- void WtTimedServerPusherClient::OnServer() {   OnTimedServerPush();   Wt::WApplication::instance()->triggerUpdate(); } //---------------------------------------------------------------------------

 

 

 

 

 

wttimedserverpusherclient.h

 

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//--------------------------------------------------------------------------- #ifndef WTTIMEDSERVERPUSHERCLIENT_H #define WTTIMEDSERVERPUSHERCLIENT_H //--------------------------------------------------------------------------- #include <string> #include <vector> //--------------------------------------------------------------------------- ///WtTimedServerPusherClient is a client responding to WtTimedServerPusher ///and to be used as a base class struct WtTimedServerPusherClient {   virtual ~WtTimedServerPusherClient();   ///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();   ///UpdatePage is called when the WtTimedServerPusher triggers an update by timer   virtual void OnTimedServerPush() = 0;   protected:   ///WtTimedServerPusherClient constructor is protected   ///because it is to be used as a base class   WtTimedServerPusherClient();   private:   ///Respond to the server   void OnServer(); }; //--------------------------------------------------------------------------- #endif // WTTIMEDSERVERPUSHERCLIENT_H