Firefox start when close

[mateczek]

Firefox start when close - console application (Linux)

header file

#ifndef MAPP_H
#define MAPP_H
#include<QCoreApplication>
#include<QProcess>

class mApp : public QCoreApplication
{
    Q_OBJECT
    QProcess* fproc;
    const QString progName{"/usr/bin/firefox"};
    const QStringList wwwSite{{"-new-window"},{"localhost"}};
public:
    mApp(int argc, char *argv[]);
    ~mApp();

signals:

public slots:
   void ffoxClose(int a);
};

#endif // MAPP_H

source file

#include "mapp.h"
#include<QDebug>

mApp::mApp(int argc, char *argv[]):QCoreApplication(argc, argv)
{
   fproc=new QProcess(this);
   fproc->start(progName,wwwSite);
   connect(fproc,SIGNAL(finished(int)),this, SLOT(ffoxClose(int)));
}

mApp::~mApp()
{
  fproc->close();
  fproc->destroyed();

}

void mApp::ffoxClose(int a) //gdy aplikacja się skończy to odpalam ponownie
{
   qDebug()<<"1";
   fproc->start(progName,wwwSite);
}

I want to start firefox again when the firefox is closed.
my solution is wrong, because sometimes generates multiple browser windows. (sometimes work correctly )
My program sometimes, in an endless loop generates new Firefox window!!!
where is wrong??

thank You for watching

[A Former User]

Your code is correct. The problem here is that firefox always only runs a single process. Everytime you call /usr/bin/firefox it checks if there is already a running instance and if this is true it just tells it to open another window and then returns.

[David.G]

Perhaps a tiny bit unrelated to your question but have you considered using QDesktopServices instead of opening a whole process? The helper class will open the default browser the user uses, most of the time using the correct window. (at least in my experience)

[mateczek]

This post is deleted!

[mateczek]

thank you for ALL !!!
I present final solution
header

#ifndef MAPP_H
#define MAPP_H
#include<QCoreApplication>
#include<QProcess>
#include<QFile>

class mApp : public QCoreApplication
{
    Q_OBJECT
    QProcess* fproc;
    const QString progName{"/usr/bin/firefox"};
    const QStringList wwwSite{{"localhost"},{"-P marek"},{"-no-remote"}};
    const QStringList killffox{{"firefox"}};
public:
    mApp(int argc, char *argv[]);
    ~mApp();

signals:

public slots:
   void ffoxClose(int a);
};

#endif // MAPP_H

souce

#include "mapp.h"
#include<QFileInfo>

mApp::mApp(int argc, char *argv[]):QCoreApplication(argc, argv)
{
   fproc=new QProcess(this);
   QFileInfo lock("/home/tygrysy/.mozilla/firefox/marek/lock"); //file exist when firefox is run
   if (lock.isSymLink()){
        fproc->start("killall",killffox);
        fproc->waitForFinished();
   }
   fproc->start(progName,wwwSite);
   connect(fproc,SIGNAL(finished(int)),this, SLOT(ffoxClose(int)));

}

mApp::~mApp()
{
  fproc->close();
  fproc->destroyed();

}

void mApp::ffoxClose(int a) //gdy aplikacja się skończy to odpalam ponownie
{

    QFileInfo lock("/home/tygrysy/.mozilla/firefox/marek/lock"); // file exist when firefox run :P
    if (!lock.isSymLink()){
         fproc->start(progName,wwwSite);
    }
}