controller.cpp

程序代码使用说明： (1)所有源代码目录下都提供了Makefile（非Qt）

#include "Controller.h"
#include "AppMgrModel.h"
#include "MainWin.h"

#include <QString>
#include <unistd.h>
#include <sys/types.h>


void Controller::showTopScreen()
{
    showNext(Folder_Type, TOP_FOLDER_FLAG, NULL);
}

void Controller::showNext(int type, const QString& value, MainWin* preWin)
{
    switch (type)
    {
    case Folder_Type:
        {
            MainWin* mainWin = new MainWin(value, preWin);
            mainWin->show();
            
            if (preWin)
                preWin->hide();
            return;
        }
    case Application_Type:
        {
            launchApp(value.toUtf8().constData());
            return;
        }
    default:
        return;
    }
}

void Controller::launchApp(const char* fileName)
{
    if (fileName == NULL)
    {
        qCritical("Launch path is NULL!\n");
    }
    
    pid_t pid = fork();

    if (pid == 0)
    {
        qDebug("new process forked. PID is:%d\n", getpid());
        int result = execl(fileName, fileName, 0);

        if (result < 0)
        {
            qCritical("failed to launch application!\n");
        }
        _exit(-1);
    }
}