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GtkFileChooserNative

GtkFileChooserNative — A native file chooser dialog, suitable for “File/Open” or “File/Save” commands

Includes

#include <gtk/gtk.h>

Description

GtkFileChooserNative is an abstraction of a dialog box 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 certain platforms, such as Windows, the native platform file chooser is uses 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 GtkNativeDialog functions.

Typical usage

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

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GtkFileChooserNative *native;
GtkFileChooserAction action = GTK_FILE_CHOOSER_ACTION_OPEN;
gint res;

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

res = gtk_native_dialog_run (GTK_NATIVE_DIALOG (native));
if (res == GTK_RESPONSE_ACCEPT)
  {
    char *filename;
    GtkFileChooser *chooser = GTK_FILE_CHOOSER (native);
    filename = gtk_file_chooser_get_filename (chooser);
    open_file (filename);
    g_free (filename);
  }

g_object_unref (native);

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

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GtkFileChooserNative *native;
GtkFileChooser *chooser;
GtkFileChooserAction action = GTK_FILE_CHOOSER_ACTION_SAVE;
gint res;

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

gtk_file_chooser_set_do_overwrite_confirmation (chooser, TRUE);

if (user_edited_a_new_document)
  gtk_file_chooser_set_current_name (chooser,
                                     _("Untitled document"));
else
  gtk_file_chooser_set_filename (chooser,
                                 existing_filename);

res = gtk_native_dialog_run (GTK_NATIVE_DIALOG (native));
if (res == GTK_RESPONSE_ACCEPT)
  {
    char *filename;

    filename = gtk_file_chooser_get_filename (chooser);
    save_to_file (filename);
    g_free (filename);
  }

g_object_unref (native);

For more information on how to best set up a file dialog, see GtkFileChooserDialog.

Response Codes

GtkFileChooserNative inherits from GtkNativeDialog, which means it will return GTK_RESPONSE_ACCEPT if the user accepted, and GTK_RESPONSE_CANCEL if he pressed cancel. It can also return GTK_RESPONSE_DELETE_EVENT if the window was unexpectedly closed.

Differences from GtkFileChooserDialog

There are a few things in the GtkFileChooser API that are not possible to use with GtkFileChooserNative, as such use would prohibit the use of a native dialog.

There is no support for the signals that are emitted when the user navigates in the dialog, including:

You can also not use the methods that directly control user navigation:

  • gtk_file_chooser_unselect_filename()

  • gtk_file_chooser_select_all()

  • gtk_file_chooser_unselect_all()

If you need any of the above you will have to use GtkFileChooserDialog directly.

No operations that change the 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 GtkFileChooserDialog does, 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. In this situation, the following things are not supported and will be silently ignored:

Functions

gtk_file_chooser_native_new ()

GtkFileChooserNative *
gtk_file_chooser_native_new (const gchar *title,
                             GtkWindow *parent,
                             GtkFileChooserAction action,
                             const gchar *accept_label,
                             const gchar *cancel_label);

Creates a new GtkFileChooserNative.

Parameters

title

Title of the native, or NULL.

[allow-none]

parent

Transient parent of the native, or NULL.

[allow-none]

action

Open or save mode for the dialog

 

accept_label

text to go in the accept button, or NULL for the default.

[allow-none]

cancel_label

text to go in the cancel button, or NULL for the default.

[allow-none]

Returns

a new GtkFileChooserNative

Since: 3.20


gtk_file_chooser_native_get_accept_label ()

const char *
gtk_file_chooser_native_get_accept_label
                               (GtkFileChooserNative *self);

Retrieves the custom label text for the accept button.

Parameters

self

a GtFileChooserNative

 

Returns

The custom label, or NULL for the default. This string is owned by GTK+ and should not be modified or freed.

[nullable]

Since: 3.20


gtk_file_chooser_native_set_accept_label ()

void
gtk_file_chooser_native_set_accept_label
                               (GtkFileChooserNative *self,
                                const char *accept_label);

Sets the custom label text for the accept button.

If characters in label are preceded by an underscore, they are underlined. If you need a literal underscore character in a label, use “__” (two underscores). The first underlined character represents a keyboard accelerator called a mnemonic. Pressing Alt and that key activates the button.

Parameters

self

a GtFileChooserNative

 

accept_label

custom label or NULL for the default.

[allow-none]

Since: 3.20


gtk_file_chooser_native_get_cancel_label ()

const char *
gtk_file_chooser_native_get_cancel_label
                               (GtkFileChooserNative *self);

Retrieves the custom label text for the cancel button.

Parameters

self

a GtFileChooserNative

 

Returns

The custom label, or NULL for the default. This string is owned by GTK+ and should not be modified or freed.

[nullable]

Since: 3.20


gtk_file_chooser_native_set_cancel_label ()

void
gtk_file_chooser_native_set_cancel_label
                               (GtkFileChooserNative *self,
                                const char *cancel_label);

Sets the custom label text for the cancel button.

If characters in label are preceded by an underscore, they are underlined. If you need a literal underscore character in a label, use “__” (two underscores). The first underlined character represents a keyboard accelerator called a mnemonic. Pressing Alt and that key activates the button.

Parameters

self

a GtFileChooserNative

 

cancel_label

custom label or NULL for the default.

[allow-none]

Since: 3.20

Types and Values

See Also

GtkFileChooser, GtkNativeDialog, GtkFileChooserDialog

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