Re: Replace gnome_vfs_open_url by gio

["Xavier Claessens" <xclaesse gmail com>]

Hi,

I tried a quick testing program but it does not seems to work... Here it finds the uri scheme "http" but g_app_info_get_default_for_uri_scheme() returns NULL.

I attached my test program, could you please tell me what's wrong? If I get it working I'll make a patch to introduce g_file_get_default_handler().

Thanks,
Xavier Claessens.

2007/11/16, Alexander Larsson <alexl redhat com>:

On Thu, 2007-11-15 at 16:25 +0100, Xavier Claessens wrote:
> Hello,
>
> I'm trying to get ride of GnomeVFS dependency in Empathy. I'm looking
> for a replacement of gnome_vfs_open_url(), is there an API in gio to do
> the same thing?

There is no simple call for it, but all the ingredients for it is there.

Start by looking at:

GAppInfo *g_app_info_get_default_for_uri_scheme  (const char *uri_scheme);

(uri scheme comes from g_file_get_uri_scheme())

If that returns NULL, we must look at the file type, which is done with:

g_file_query_info() or g_file_query_info_async()

(passing G_FILE_ATTRIBUTE_STD_CONTENT_TYPE as attribute)

Then you can get the default from:

GAppInfo *g_app_info_get_default_for_type (const char  *content_type,
                                           gboolean     must_support_uris);

Clearly these could all go into a helper function:

GAppInfo *g_file_get_default_handler (GFile *file,
                                      GCancellable, *cancellable,
                                      GError **error)

Patches accepted.

Then you can launch the GAppInfo using g_app_info_launch().

For certain features (startup notification, starting on right screen)
you can also pass in a GAppLaunchContext implementation. This is a bit
tricky atm, but in the future such an implementation will be availible
in Gtk+ for simple use.

/* compile with: gcc open-url.c `pkg-config gio-2.0 --libs --cflags` */

#include <glib.h>
#include <gio/gappinfo.h>
#include <gio/gfile.h>

int
main (int argc, char *argv[])
{
	GAppInfo *app_info = NULL;
	GFile    *file;
	gchar    *uri_scheme;
	GList    *files;

	g_type_init ();

	file = g_file_new_for_uri ("http://google.be";);
	uri_scheme = g_file_get_uri_scheme (file);
	if (uri_scheme) {
		g_print ("Found uri scheme: %s\n", uri_scheme);
		app_info = g_app_info_get_default_for_uri_scheme (uri_scheme);
		g_free (uri_scheme);
	} else {
		GFileInfo   *info;
		const gchar *content_type;

		g_print ("Query information...\n");
		info = g_file_query_info (file,
					  G_FILE_ATTRIBUTE_STD_CONTENT_TYPE,
					  0, NULL, NULL);

		if (info) {
			content_type = g_file_info_get_content_type (info);
			g_print ("Found content type: %s\n", content_type);
			app_info = g_app_info_get_default_for_type (content_type, FALSE);
			g_object_unref (info);
		}
	}

	if (app_info) {
		g_print ("launching...\n");
		files = g_list_prepend (NULL, file);
		g_app_info_launch (app_info, files, NULL, NULL);
		g_list_free (files);
		g_object_unref (app_info);
	}

	g_object_unref (file);
}