Package org.gnome.gtk

Class FileChooserNative

java.lang.Object
io.github.jwharm.javagi.base.ProxyInstance
org.gnome.gobject.TypeInstance
org.gnome.gobject.GObject
org.gnome.gtk.NativeDialog
org.gnome.gtk.FileChooserNative
All Implemented Interfaces:
Proxy, FileChooser
@Generated("io.github.jwharm.JavaGI") @Deprecated public class FileChooserNative extends NativeDialog implements FileChooser
Deprecated.
GtkFileChooserNative is an abstraction of a dialog suitable for use with “File Open” or “File Save as” commands.

By default, this just uses a GtkFileChooserDialog to implement the actual dialog. However, on some platforms, such as Windows and macOS, the native platform file chooser is used instead. When the application is running in a sandboxed environment without direct filesystem access (such as Flatpak), GtkFileChooserNative may call the proper APIs (portals) to let the user choose a file and make it available to the application.

While the API of GtkFileChooserNative closely mirrors GtkFileChooserDialog, the main difference is that there is no access to any GtkWindow or GtkWidget for the dialog. This is required, as there may not be one in the case of a platform native dialog.

Showing, hiding and running the dialog is handled by the NativeDialog functions.

Note that unlike GtkFileChooserDialog, GtkFileChooserNative objects are not toplevel widgets, and GTK does not keep them alive. It is your responsibility to keep a reference until you are done with the object.

Typical usage
In the simplest of cases, you can the following code to use GtkFileChooserNative to select a file for opening: 

static void
 on_response (GtkNativeDialog *native,
              int              response)
 {
   if (response == GTK_RESPONSE_ACCEPT)
     {
       GtkFileChooser *chooser = GTK_FILE_CHOOSER (native);
       GFile *file = gtk_file_chooser_get_file (chooser);

       open_file (file);

       g_object_unref (file);
     }

   g_object_unref (native);
 }

   // ...
   GtkFileChooserNative *native;
   GtkFileChooserAction action = GTK_FILE_CHOOSER_ACTION_OPEN;

   native = gtk_file_chooser_native_new ("Open File",
                                         parent_window,
                                         action,
                                         "_Open",
                                         "_Cancel");

   g_signal_connect (native, "response", G_CALLBACK (on_response), NULL);
   gtk_native_dialog_show (GTK_NATIVE_DIALOG (native));

To use a GtkFileChooserNative for saving, you can use this: 

static void
 on_response (GtkNativeDialog *native,
              int              response)
 {
   if (response == GTK_RESPONSE_ACCEPT)
     {
       GtkFileChooser *chooser = GTK_FILE_CHOOSER (native);
       GFile *file = gtk_file_chooser_get_file (chooser);

       save_to_file (file);

       g_object_unref (file);
     }

   g_object_unref (native);
 }

   // ...
   GtkFileChooserNative *native;
   GtkFileChooser *chooser;
   GtkFileChooserAction action = GTK_FILE_CHOOSER_ACTION_SAVE;

   native = gtk_file_chooser_native_new ("Save File",
                                         parent_window,
                                         action,
                                         "_Save",
                                         "_Cancel");
   chooser = GTK_FILE_CHOOSER (native);

   if (user_edited_a_new_document)
     gtk_file_chooser_set_current_name (chooser, _("Untitled document"));
   else
     gtk_file_chooser_set_file (chooser, existing_file, NULL);

   g_signal_connect (native, "response", G_CALLBACK (on_response), NULL);
   gtk_native_dialog_show (GTK_NATIVE_DIALOG (native));

For more information on how to best set up a file dialog, see the FileChooserDialog documentation.

Response Codes
GtkFileChooserNative inherits from NativeDialog, which means it will return ResponseType.ACCEPT if the user accepted, and ResponseType.CANCEL if he pressed cancel. It can also return ResponseType.DELETE_EVENT if the window was unexpectedly closed.

Differences from GtkFileChooserDialog
There are a few things in the FileChooser interface that are not possible to use with GtkFileChooserNative, as such use would prohibit the use of a native dialog.

No operations that change the dialog work while the dialog is visible. Set all the properties that are required before showing the dialog.

Win32 details
On windows the IFileDialog implementation (added in Windows Vista) is used. It supports many of the features that GtkFileChooser has, but there are some things it does not handle:

If any of these features are used the regular GtkFileChooserDialog will be used in place of the native one.

Portal details
When the org.freedesktop.portal.FileChooser portal is available on the session bus, it is used to bring up an out-of-process file chooser. Depending on the kind of session the application is running in, this may or may not be a GTK file chooser.

macOS details
On macOS the NSSavePanel and NSOpenPanel classes are used to provide native file chooser dialogs. Some features provided by GtkFileChooser are not supported:

  • Shortcut folders.