QListView and QDir

[Yayati.Ekbote]

Hi guys,

I am trying to make a filebrowser application with the help of QListView and QDir classes of Qt2 designer with Qtopia 2.2.0. I have drawn a QListView widget named MyListView on UI.

I declared a QDir dir globally;

i wrote my progrm as follows...

#include "browser.h" //my header file
#include <qdir.h>
#include <qlistview.h>
#include <qstringlist.h>

QDir dir=QDir::rootDirPath();

Browser::Browser(QWidget *parent,const char *name, WFlags fl):
BrowserForm(parent,name,fl)
{
QListViewItem *rootItem=new QListViewItem(MyListView);
rootItem->setText(0,QDir::rootDirPath());
MyListView->insertItem(rootItem);

connect(MyListView,SIGNAL(doubleClicked(QListViewI tem*),this,SLOT(setDir(QListViewItem*)));
connect(upButton,SIGNAL(clicked()),this,SLOT(upPat h());
}

Browser::~Browser()
{
}

void Browser::setDir(QListViewItem* newItem)
{
MyListView->clear();
QStringList dirList(dir.entryList());
for(QStringList::Iterator it=dirList.begin();it!=dirList.end();++it)
{
QListViewItem *dirItem=new QListViewItem(MyListView);
dirItem->setText(0,(*it));
MyListView->insertItem(dirItem);
}

}

void Browser::upPath()
{
MyListView->clear();
QListViewItem *upitem=new QListViewItem(MyListView);
upItem->setText(0,dir.path());
MyListView->insertItem(upItem);
}

This code compiles fine. when i clicke the root folder set in the listview i get to see the subfolders and when i press the up button i again see the rootfolder. This works fine for the root and its subsequent folders. But i am unable to understand what i have to do if i have to click one of the subfolders randomly and see the subfolders of the subfolder selected. Also how to set the path for up function if i have to come back from the subfolders level by level....

The Qtopia 2.2.0 doesn't have much API to manipulate random dir path. What to do???

[high_flyer]

What is the restriction for using Qt2?

[Yayati.Ekbote]

I have a friendlyARM device MINI2440 which gives QT2 designer and qtopia2.2.0. It compiles Qt applications for the device...so i have no choice but to use that only!!!!:

[high_flyer]

Try this (I didn't test it!):

void Browser::setDir(QListViewItem* newItem)
{
  MyListView->clear();
  dir = QDir(newItem->text());
  QStringList dirList(dir.entryList());
  for(QStringList::Iterator it=dirList.begin();it!=dirList.end();++it)
  {
   QListViewItem *dirItem=new QListViewItem(MyListView);
   dirItem->setText(0,(*it));
   MyListView->insertItem(dirItem);
  }
}

void Browser::setDir(QListViewItem* newItem)
{
  MyListView->clear();
  dir = QDir(newItem->text());
  QStringList dirList(dir.entryList());
  for(QStringList::Iterator it=dirList.begin();it!=dirList.end();++it)
  {
   QListViewItem *dirItem=new QListViewItem(MyListView);
   dirItem->setText(0,(*it));
   MyListView->insertItem(dirItem);
  }
}

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[Yayati.Ekbote]

Thanks.....It worked a bit....but it doesn't traverse the level of subfolder of subfoldrs...I am trying to use stack, to push path and pop the path when up button is pressed. Lets see...i'll keep posting when i get something new...in this....

[Yayati.Ekbote]

This is the code which i have written according to my understanding!!!. I am unable to understand why the runtime errors are coming as the code gets compiled fine. Though its not at all complete coz functionality for files is yet to be written...my problem is persisting in case of directories only....for example my code can traverse "bin" folder but not "dev" folder...It can traverse one level and come back to root when Up Button is pressed..its a run time error which i am unable to understand...plz guide...

This code is written using Qt2 designer/qtopia2.2.0.....

#include "filebrowser.h"
#include <qlistview.h>
#include <qdir.h>
#include <qfileinfo.h>
#include <qlabel.h>
#include <qpushbutton.h>

#include <stdio.h>

QDir dir=QDir::rootDirPath();

int i=0;
QString pathStack[100];

FileBrowser::FileBrowser(QWidget *parent, const char *name, WFlags fl):
FileBrowserForm(parent,name,fl)
{
QPixmap fp("/opt/FriendlyARM/mini2440/x86-qtopia/Browser1/FC.png");
QPixmap file("/opt/FriendlyARM/mini2440/x86-qtopia/Browser1/File.png");

push(dir.absPath());
TextLabel->setText(dir.dirName());
if(dir.exists())
{
QStringList dirList(dir.entryList());
MyListView->clear();

for(QStringList::Iterator it=dirList.begin();it!=dirList.end();++it)
{
QFileInfo d(dir,(const char*)(*it));
QListViewItem *dirItem=new QListViewItem(MyListView);
dirItem->setText(0,(const char*)(*it));
if(d.isDir())
{
dirItem->setPixmap(0,fp);
}
else
{
dirItem->setPixmap(0,file);
}
MyListView->insertItem(dirItem);
printf("\n%s",(const char*)(*it));

}
}
else
printf("Directroy does not exist");


connect(MyListView,SIGNAL(doubleClicked(QListViewI tem*)),this,SLOT(set_dir(QListViewItem*)));
connect(UpButton,SIGNAL(clicked()),this,SLOT(up_pa th()));

}

FileBrowser::~FileBrowser()
{
}

void FileBrowser::set_dir(QListViewItem* nItem)
{
QPixmap fp("/opt/FriendlyARM/mini2440/x86-qtopia/Browser1/FC.png");
QPixmap file("/opt/FriendlyARM/mini2440/x86-qtopia/Browser1/File.png");

dir.cd(nItem->text(0));
dir.convertToAbs();
TextLabel->setText(dir.dirName());

push(dir.absPath());

QStringList dirList(dir.entryList());
MyListView->clear();

for(QStringList::Iterator it=dirList.begin();it!=dirList.end();++it)
{
QFileInfo fi(dir,(const char*)(*it));
QListViewItem *dirItem=new QListViewItem(MyListView);
dirItem->setText(0,(const char*)(*it));
if(fi.isDir())
{
dirItem->setPixmap(0,fp);
}
else
{
dirItem->setPixmap(0,file);
}
MyListView->insertItem(dirItem);
printf("\n%s",(const char*)(*it));
}

}

void FileBrowser:: up_path()
{
QPixmap fp("/opt/FriendlyARM/mini2440/x86-qtopia/Browser1/FC.png");
QPixmap file("/opt/FriendlyARM/mini2440/x86-qtopia/Browser1/File.png");

dir.cdUp();
dir.convertToAbs();
TextLabel->setText(dir.dirName());
QStringList dirList(dir.entryList());
MyListView->clear();

for(QStringList::Iterator it=dirList.begin();it!=dirList.end();++it)
{
QListViewItem *dirItem=new QListViewItem(MyListView);
dirItem->setText(0,(const char*)(*it));
dirItem->setPixmap(0,fp);
MyListView->insertItem(dirItem);
}
}

void FileBrowser:: push(QString path)
{

pathStack[i++]=path;

}

QString FileBrowser:: pop()
{
if(i>=0)
{
QString returnPath=pathStack[--i];
return returnPath;
}
else
{
return("No such directory");
}
}