Convert some "Save As" actions to run asynchronously.

This introduces e-shell-utils for miscellaneous utility functions
that integrate with the shell or shell settings.  First function
is e_shell_run_save_dialog(), which automatically remembers the
selected folder in the file chooser dialog.

Also, kill some redundant save dialog functions, as well as some
write-this-string-to-disk functions that block.

1 files changed, 100 insertions, 0 deletions

diff --git a/shell/e-shell-utils.c b/shell/e-shell-utils.c
new file mode 100644
index 0000000000..9d3d6f5fb4
--- /dev/null
+++ b/shell/e-shell-utils.c
@@ -0,0 +1,100 @@
+/*
+ * e-shell-utils.c
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) version 3.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with the program; if not, see <http://www.gnu.org/licenses/>
+ *
+ *
+ * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
+ *
+ */
+
+#include "e-shell-utils.h"
+
+#include <glib/gi18n-lib.h>
+
+/**
+ * e_shell_run_save_dialog:
+ * @shell: an #EShell
+ * @title: file chooser dialog title
+ * @customize_func: optional dialog customization function
+ * @customize_data: optional data to pass to @customize_func
+ *
+ * Runs a #GtkFileChooserDialog in save mode with the given title and
+ * returns the selected #GFile.  It automatically remembers the selected
+ * folder.  If @customize_func is provided, the function is called just
+ * prior to running the dialog (the file chooser is the first argument,
+ * @customize_data is the second).  If the user cancels the dialog the
+ * function will return %NULL.
+ *
+ * Returns: the #GFile to save to, or %NULL
+ **/
+GFile *
+e_shell_run_save_dialog (EShell *shell,
+                         const gchar *title,
+                         GtkCallback customize_func,
+                         gpointer customize_data)
+{
+	EShellSettings *shell_settings;
+	GtkFileChooser *file_chooser;
+	GFile *chosen_file = NULL;
+	GtkWidget *dialog;
+	GtkWindow *parent;
+	const gchar *property_name;
+	gchar *uri;
+
+	g_return_val_if_fail (E_IS_SHELL (shell), NULL);
+
+	property_name = "file-chooser-folder";
+	shell_settings = e_shell_get_shell_settings (shell);
+
+	parent = e_shell_get_active_window (shell);
+
+	dialog = gtk_file_chooser_dialog_new (
+		title, parent,
+		GTK_FILE_CHOOSER_ACTION_SAVE,
+		GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
+		GTK_STOCK_SAVE, GTK_RESPONSE_OK, NULL);
+
+	file_chooser = GTK_FILE_CHOOSER (dialog);
+
+	gtk_dialog_set_default_response (GTK_DIALOG (dialog), GTK_RESPONSE_OK);
+
+	gtk_file_chooser_set_local_only (file_chooser, FALSE);
+	gtk_file_chooser_set_do_overwrite_confirmation (file_chooser, TRUE);
+
+	/* Restore the current folder from the previous file chooser. */
+	uri = e_shell_settings_get_string (shell_settings, property_name);
+	if (uri != NULL)
+		gtk_file_chooser_set_current_folder_uri (file_chooser, uri);
+	g_free (uri);
+
+	/* Allow further customizations before running the dialog. */
+	if (customize_func != NULL)
+		customize_func (dialog, customize_data);
+
+	if (gtk_dialog_run (GTK_DIALOG (dialog)) != GTK_RESPONSE_OK)
+		goto exit;
+
+	chosen_file = gtk_file_chooser_get_file (file_chooser);
+
+	/* Save the current folder for subsequent file choosers. */
+	uri = gtk_file_chooser_get_current_folder_uri (file_chooser);
+	e_shell_settings_set_string (shell_settings, property_name, uri);
+	g_free (uri);
+
+exit:
+	gtk_widget_destroy (dialog);
+
+	return chosen_file;
+}