GtkFileChooser (non local) URI weirdness

[Albert Veli <albert veli biosensor se>]

Hi!

I'm trying to write an app that (among other things) shows a
GtkFileChooserDialog that lets the user select a file (for opening).

I want it to work both on the local filesystem and over FTP.
And I want the app to work on both Linux and Windows.

---

On Linux (Debian/Sarge, gtk+-2.6.4) an URI like this works:

 "ftp://192.168.0.101/";

with gtk_file_chooser_set_current_folder_uri().

Then a new dialog pops up that asks for anonymous or username/password
login. I'm not sure, but I suspect gnome-vfs is beeing used as backend
and that the login dialog comes from there.

It even works with an URI like:

 "ftp://username:password 192 168 0 101/home/username/some/directory"

But if directories are appended after the hostname a warning like this
is showed:

libgnomevfs-WARNING **: gnome-vfs-monitor.c: A monitor handle was
destroyed before it was added to the method hash table. This is a bug in
the application and can cause crashed. It is probably a race-condition.

---

On Windows (MinGW, gtk+-2.6.8) it works for local filesystem URI:s like

 "file:///C:/some/directory"

But nothing happens with "ftp://"; URI:s. The filechooser dialog
only shows the current directory instead of the FTP directory.

It is possible though to specify windows shares:

 "file:////192.168.0.102/sharename"

But I don't want windows shares, I want the application to work the same
on Windows and Linux so I want FTP and local filesystem.

---

Is it possible to use GtkFileChooser with FTP on Windows?

First I thought that it should be relatively easy to write a custom
backend to GtkFileChooser that uses something like libcurl to browse
FTP, but I just couldn't figure out how to do it. There must be some
easier way...

Below is a minimal application that shows a filechooser dialog and tries
to browse FTP on localhost "ftp://127.0.0.1/";.

The test-application works on Linux but not on Windows. There should,
off course, be an FTP-server at the specified IP-address.

Hope someone has an answer to my FTP troubles.


Regards, Albert



------ filechooser.c --8<--

/* Example program to experiment with a filechooser dialog.
 * Compile with:
 *
 *  gcc -W -Wall -o filechooser filechooser.c `pkg-config --cflags
--libs gtk+-2.0`
 *
 * On Windows, add the flag -mms-bitfields:
 *
 *  gcc -W -Wall -mms-bitfields -o filechooser filechooser.c `pkg-config
--cflags --libs gtk+-2.0`
 */

#include <gtk/gtk.h>

/* Avoid warnings for (intentionally) unused variables */
#define UNUSED __attribute__ ((unused))

/* Global variable */
GtkWidget *main_window;


/* Callback for open button.
 * Show a filechooser dialog with start directory "folder_uri" and
 * print uri to selected file with g_print().
 */
static void open_callback(UNUSED GtkWidget *widget,
                          gchar *folder_uri)
{
   GtkWidget *dialog;
   gchar *chosen_uri;

   dialog = gtk_file_chooser_dialog_new("Open File",
                                        GTK_WINDOW(main_window),
                                        GTK_FILE_CHOOSER_ACTION_OPEN,
                                        GTK_STOCK_CANCEL,
GTK_RESPONSE_CANCEL,
                                        GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT,
                                        NULL);

   /* Allow open across network connections */
   gtk_file_chooser_set_local_only(GTK_FILE_CHOOSER(dialog), FALSE);

   /* Select current directory for file chooser */
   gtk_file_chooser_set_current_folder_uri(GTK_FILE_CHOOSER(dialog),
folder_uri);

   if (gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_ACCEPT) {
      chosen_uri = gtk_file_chooser_get_uri(GTK_FILE_CHOOSER(dialog));
      g_print("Open \"%s\"\n", chosen_uri);
      g_free(chosen_uri);
   } else {
      g_print("Cancel\n");
   }

   gtk_widget_destroy(dialog);
}


int main(int argc, char *argv[])
{
   GtkWidget *button;

   gtk_init(&argc, &argv);

   main_window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
   g_signal_connect(G_OBJECT(main_window), "delete_event",
                    G_CALLBACK(gtk_main_quit), NULL);

   /* Create an open button and connect it to open_callback() */
   button = gtk_button_new_from_stock(GTK_STOCK_OPEN);
   g_signal_connect(G_OBJECT(button), "clicked",
                    G_CALLBACK(open_callback),
                    "ftp://127.0.0.1/";);
   gtk_container_add(GTK_CONTAINER(main_window), button);
   gtk_widget_show(button);

   gtk_widget_show(main_window);

   gtk_main();

   return 0;
}

-->8-- filechooser.c ------