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

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);
    }
}