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caller_object.cpp

This example is part of a series of examples that demonstrate method proxy calls and adapter stubs.This group of examples are:

Here is this example:

/***************************************************************************
* Copyright (C) 2007,2010 by Rick L. Vinyard, Jr. *
* rvinyard@cs.nmsu.edu *
* *
* This file is part of the dbus-cxx library. *
* *
* The dbus-cxx library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* version 3 as published by the Free Software Foundation. *
* *
* The dbus-cxx library 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 software. If not see <http://www.gnu.org/licenses/>. *
***************************************************************************/
#include <dbus-cxx.h>
#include <iostream>
#include "caller_popt.h"
class Calculator: public DBus::ObjectProxy
{
protected:
Calculator(DBus::Connection::pointer conn):
DBus::ObjectProxy(conn, "dbuscxx.example.calculator.server", "/dbuscxx/example/Calculator")
{
m_method_add = this->create_method<double,double,double>("Calculator.Basic", "add");
m_method_sub = this->create_method<double,double,double>("Calculator.Basic", "sub");
m_method_mul = this->create_method<double,double,double>("Calculator.Basic", "mul");
m_method_div = this->create_method<double,double,double>("Calculator.Basic", "div");
}
public:
typedef DBusCxxPointer<Calculator> pointer;
static pointer create(DBus::Connection::pointer conn)
{
return pointer(new Calculator(conn));
}
double add(double param1, double param2) { return (*m_method_add)(param1,param2); }
double sub(double param1, double param2) { return (*m_method_sub)(param1,param2); }
double mul(double param1, double param2) { return (*m_method_mul)(param1,param2); }
double div(double param1, double param2) { return (*m_method_div)(param1,param2); }
protected:
};
int main(int argc, const char** argv)
{
// Useful symbols declared:
// op: C string containing the op to perform
// opsym: C char containing the mathmatical symbol of the op
// param1: double containing parameter 1
// param2: double containing parameter 2
CALLER_PARSE_ARGS(argc, argv);
DBus::Connection::pointer connection = dispatcher->create_connection( DBus::BUS_SESSION );
//Create the calculator from the connection
Calculator::pointer calculator = Calculator::create(connection);
double answer=NAN;
//We may now call methods on this proxy as if it was a real object,
//and not a remote object over the bus
if ( strcmp(op,"add") == 0 ) { answer = calculator->add(param1,param2); }
else if ( strcmp(op,"sub") == 0 ) { answer = calculator->sub(param1,param2); }
else if ( strcmp(op,"mul") == 0 ) { answer = calculator->mul(param1,param2); }
else if ( strcmp(op,"div") == 0 ) { answer = calculator->div(param1,param2); }
std::cout << param1 << " " << opsym << " " << param2 << " = " << answer << std::endl;
return 0;
}

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