fr-new-archive-dialog.c

static void
overwrite_dialog_response_cb (GtkDialog *dialog, int response, GTask *task)
{
    gboolean overwrite;
    overwrite = response == GTK_RESPONSE_OK;
    GError *error = NULL;
    GFile *file = g_task_get_task_data (task);

    if (overwrite) {
        g_file_delete (file, NULL, &error);
        if (error != NULL) {
            GtkWidget *err_dialog = _gtk_error_dialog_new (
                GTK_WINDOW (&dialog->window),
                GTK_DIALOG_MODAL,
                NULL,
                _ ("Could not delete the old archive."),
                "%s",
                error->message);

            g_signal_connect (GTK_MESSAGE_DIALOG (err_dialog), "response", G_CALLBACK (gtk_widget_destroy), NULL);
            gtk_widget_show (err_dialog);

            g_error_free (error);
            g_task_return_pointer (task, file, g_object_unref);
        } else {
            g_task_return_error (task, error);
        }
    }

    gtk_widget_destroy (GTK_WIDGET (dialog));
}

void
fr_new_archive_dialog_get_file_async (FrNewArchiveDialog *self,
                                      const char **mime_type,
                                      GAsyncReadyCallback callback)
{
	const char *basename;
	int         n_format;
	char       *basename_ext;
	GFile      *parent;
	GFile      *file;
	GError     *error = NULL;
	const char *file_mime_type;
	GFileInfo  *parent_info;
	GtkWidget  *dialog;
	GTask 	   *task;

	/* Check whether the user entered a valid archive name. */
	basename = gtk_entry_get_text (GTK_ENTRY (GET_WIDGET ("filename_entry")));
	if ((basename == NULL) || (*basename == '\0')) {
		dialog = _gtk_error_dialog_new (GTK_WINDOW (self),
					   GTK_DIALOG_MODAL,
					   NULL,
					   _("Could not create the archive"),
					   "%s",
					   _("You have to specify an archive name."));

		g_signal_connect (GTK_MESSAGE_DIALOG (dialog), "response", G_CALLBACK (gtk_widget_destroy), NULL);
		gtk_widget_show (dialog);

		return;
	}

	/* file */
	n_format = get_selected_format (self);
	parent = gtk_file_chooser_get_file (GTK_FILE_CHOOSER (GET_WIDGET ("parent_filechooserbutton")));
	if (parent == NULL) {
		dialog = _gtk_error_dialog_new (GTK_WINDOW (self),
					   GTK_DIALOG_MODAL,
					   NULL,
					   _("Could not create the archive"),
					   "%s",
					   _("You have to specify an archive name."));

		g_signal_connect (GTK_MESSAGE_DIALOG (dialog), "response", G_CALLBACK (gtk_widget_destroy), NULL);
		gtk_widget_show (dialog);

		return;
	}

	basename_ext = g_strconcat (basename, mime_type_desc[n_format].default_ext, NULL);
	file = g_file_get_child_for_display_name (parent, basename_ext, &error);

	if (file == NULL) {
		dialog = _gtk_error_dialog_new (GTK_WINDOW (self),
						GTK_DIALOG_MODAL,
						NULL,
						_("Could not create the archive"),
						"%s",
						error->message);
		
		g_signal_connect (GTK_MESSAGE_DIALOG (dialog), "response", G_CALLBACK (gtk_widget_destroy), NULL);
		gtk_widget_show (dialog);

		g_error_free (error);
		g_free (basename_ext);
		g_object_unref (parent);

		return;
	}

	g_free (basename_ext);

	/* mime type */

	file_mime_type = mime_type_desc[n_format].mime_type;
	if (mime_type != NULL)
		*mime_type = file_mime_type;

	/* check permissions */

	parent_info = g_file_query_info (parent,
				         (G_FILE_ATTRIBUTE_ACCESS_CAN_READ ","
				          G_FILE_ATTRIBUTE_ACCESS_CAN_WRITE ","
				          G_FILE_ATTRIBUTE_ACCESS_CAN_EXECUTE","
				          G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME),
				         0,
				         NULL,
				         &error);

	g_object_unref (parent);

	if (error != NULL) {
		g_warning ("Failed to get permission for extraction dir: %s", error->message);

		g_clear_error (&error);
		g_object_unref (parent_info);
		g_object_unref (file);

		return;
	}

	if (g_file_info_has_attribute (parent_info, G_FILE_ATTRIBUTE_ACCESS_CAN_WRITE) &&
				       ! g_file_info_get_attribute_boolean (parent_info, G_FILE_ATTRIBUTE_ACCESS_CAN_WRITE)) {
		dialog = _gtk_error_dialog_new (GTK_WINDOW (self),
						GTK_DIALOG_MODAL,
						NULL,
						_("Could not create the archive"),
						"%s",
						_("You don’t have permission to create an archive in this folder"));
		
		g_signal_connect (GTK_MESSAGE_DIALOG (dialog), "response", G_CALLBACK (gtk_widget_destroy), NULL);
		gtk_widget_show (dialog);

		g_object_unref (parent_info);
		g_object_unref (file);

		return;
	}

	/* check whehter the file is equal to the original file */

	if ((self->original_file != NULL) && (g_file_equal (file, self->original_file))) {
		dialog = _gtk_error_dialog_new (GTK_WINDOW (self),
						GTK_DIALOG_MODAL,
						NULL,
						_("Could not create the archive"),
						"%s",
						_("New name is the same as old one, please type other name."));
		
		g_signal_connect (GTK_MESSAGE_DIALOG (dialog), "response", G_CALLBACK (gtk_widget_destroy), NULL);
		gtk_widget_show (dialog);

		g_object_unref (parent_info);
		g_object_unref (file);

		return;
	}

	/* check whether the file is included in the files to add */

	{
		GList *scan;

		for (scan = self->files_to_add; scan; scan = scan->next) {
			if (_g_file_cmp_uris (G_FILE (scan->data), file) == 0) {
				dialog = _gtk_error_dialog_new (GTK_WINDOW (self),
							        GTK_DIALOG_MODAL,
								NULL,
								_("Could not create the archive"),
								"%s",
								_("You can’t add an archive to itself."));
				
				g_signal_connect (GTK_MESSAGE_DIALOG (dialog), "response", G_CALLBACK (gtk_widget_destroy), NULL);
				gtk_widget_show (dialog);

				g_object_unref (parent_info);
				g_object_unref (file);

				return;
			}
		}
	}

	/* overwrite confirmation */
	if (g_file_query_exists (file, NULL)) {
		char     *filename;
		char     *message;
		char     *secondary_message;

		filename = _g_file_get_display_basename (file);
		message = g_strdup_printf (_("A file named “%s” already exists.  Do you want to replace it?"), filename);
		secondary_message = g_strdup_printf (_("The file already exists in “%s”.  Replacing it will overwrite its contents."), g_file_info_get_display_name (parent_info));
		dialog = _gtk_message_dialog_new (GTK_WINDOW (self),
						  GTK_DIALOG_MODAL,
						  message,
						  secondary_message,
						  _GTK_LABEL_CANCEL, GTK_RESPONSE_CANCEL,
						  _("_Replace"), GTK_RESPONSE_OK,
						  NULL);

		task = g_task_new(self, NULL, callback, file);
		g_task_set_task_data(task, file, (GDestroyNotify)g_clear_object);

		g_signal_connect (GTK_MESSAGE_DIALOG (dialog), "response", G_CALLBACK (overwrite_dialog_response_cb), task);
		gtk_widget_show (dialog);

		g_free (secondary_message);
		g_free (message);
		g_free (filename);
	}

	g_object_unref (parent_info);
}

fr-new-archive-dialog.h

void 	fr_new_archive_dialog_get_file_async (FrNewArchiveDialog *dialog,
											const char **mime_type,
											GAsyncReadyCallback callback);