diff options
Diffstat (limited to 'tools/gnome-session-selector.c')
| -rw-r--r-- | tools/gnome-session-selector.c | 698 |
1 files changed, 698 insertions, 0 deletions
diff --git a/tools/gnome-session-selector.c b/tools/gnome-session-selector.c new file mode 100644 index 0000000..71892c4 --- /dev/null +++ b/tools/gnome-session-selector.c @@ -0,0 +1,698 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- + * + * Copyright 2010, 2013 Red Hat, Inc, + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + * + * Written by: Matthias Clasen <mclasen@redhat.com> + */ + +#include "config.h" + +#include <fcntl.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> + +#include <glib.h> +#include <gtk/gtk.h> +#include <gio/gio.h> + +#include <glib/gi18n.h> +#include <glib/gstdio.h> + +#define GSM_MANAGER_SCHEMA "org.gnome.SessionManager" +#define KEY_AUTOSAVE_ONE_SHOT "auto-save-session-one-shot" + +static GtkBuilder *builder; +static GtkWidget *session_list; +static GtkListStore *store; +static GtkTreeModelSort *sort_model; + +static void select_session (const char *name); + +static char * +get_session_path (const char *name) +{ + return g_build_filename (g_get_user_config_dir (), "gnome-session", name, NULL); +} + +static char * +find_new_session_name (void) +{ + char *name; + char *path; + int i; + + for (i = 1; i < 20; i++) { + name = g_strdup_printf (_("Session %d"), i); + path = get_session_path (name); + if (!g_file_test (path, G_FILE_TEST_EXISTS)) { + g_free (path); + return name; + } + g_free (path); + g_free (name); + } + + return NULL; +} + +static gboolean +is_valid_session_name (const char *name) +{ + GtkTreeIter iter; + char *n; + const char *info_text; + char *warning_text; + gboolean user_tried_dot; + gboolean user_tried_slash; + GtkWidget *info_bar; + GtkWidget *label; + + if (name[0] == 0) { + return FALSE; + } + + if (name[0] == '.') { + user_tried_dot = TRUE; + } else { + user_tried_dot = FALSE; + } + + if (strchr (name, '/') != NULL) { + user_tried_slash = TRUE; + } else { + user_tried_slash = FALSE; + } + + info_text = _("Please select a custom session to run"); + warning_text = NULL; + if (user_tried_dot && user_tried_slash) { + warning_text = g_strdup_printf ("%s\n<small><b>Note:</b> <i>%s</i></small>", + info_text, + _("Session names are not allowed to start with “.” or contain “/” characters")); + } else if (user_tried_dot) { + warning_text = g_strdup_printf ("%s\n<small><b>Note:</b> <i>%s</i></small>", + info_text, + _("Session names are not allowed to start with “.”")); + } else if (user_tried_slash) { + warning_text = g_strdup_printf ("%s\n<small><b>Note:</b> <i>%s</i></small>", + info_text, + _("Session names are not allowed to contain “/” characters")); + } + + gtk_tree_model_get_iter_first (GTK_TREE_MODEL (store), &iter); + do { + gtk_tree_model_get (GTK_TREE_MODEL (store), &iter, 0, &n, -1); + if (strcmp (n, name) == 0) { + char *message; + message = g_strdup_printf (_("A session named “%s” already exists"), name); + warning_text = g_strdup_printf ("%s\n<small><b>Note:</b> <i>%s</i></small>", info_text, message); + g_free (message); + g_free (n); + break; + } + g_free (n); + } while (gtk_tree_model_iter_next (GTK_TREE_MODEL (store), &iter)); + + info_bar = (GtkWidget *) gtk_builder_get_object (builder, "info-bar"); + label = (GtkWidget*) gtk_builder_get_object (builder, "info-label"); + + if (warning_text != NULL) { + gtk_info_bar_set_message_type (GTK_INFO_BAR (info_bar), GTK_MESSAGE_WARNING); + gtk_label_set_markup (GTK_LABEL (label), warning_text); + g_free (warning_text); + return FALSE; + } + + gtk_info_bar_set_message_type (GTK_INFO_BAR (info_bar), GTK_MESSAGE_OTHER); + gtk_label_set_markup (GTK_LABEL (label), info_text); + + return TRUE; +} + +static void +populate_session_list (GtkWidget *session_list) +{ + GtkTreeIter iter; + char *path; + const char *name; + GDir *dir; + GError *error; + char *saved_session; + char *default_session; + char *default_name; + char last_session[PATH_MAX] = ""; + + saved_session = get_session_path ("saved-session"); + + if (!g_file_test (saved_session, G_FILE_TEST_IS_SYMLINK)) { + default_name = find_new_session_name (); + default_session = get_session_path (default_name); + rename (saved_session, default_session); + if (symlink (default_name, saved_session) < 0) + g_warning ("Failed to convert saved-session to symlink"); + g_free (default_name); + g_free (default_session); + } + + path = g_build_filename (g_get_user_config_dir (), "gnome-session", NULL); + error = NULL; + dir = g_dir_open (path, 0, &error); + if (dir == NULL) { + g_warning ("Failed to open %s: %s", path, error->message); + g_error_free (error); + goto out; + } + + default_name = NULL; + if (readlink (saved_session, last_session, PATH_MAX - 1) > 0) { + default_name = g_path_get_basename (last_session); + } + + while ((name = g_dir_read_name (dir)) != NULL) { + if (strcmp (name, "saved-session") == 0) + continue; + + gtk_list_store_insert_with_values (store, &iter, 100, 0, name, -1); + + if (g_strcmp0 (default_name, name) == 0) { + GtkTreeSelection *selection; + GtkTreeIter child_iter; + + gtk_tree_model_sort_convert_child_iter_to_iter (GTK_TREE_MODEL_SORT (sort_model), &child_iter, &iter); + selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (session_list)); + gtk_tree_selection_select_iter (selection, &child_iter); + } + } + + g_free (default_name); + g_dir_close (dir); + + out: + g_free (saved_session); + g_free (path); +} + +static char * +get_selected_session (void) +{ + GtkTreeSelection *selection; + GtkTreeModel *model; + GtkTreeIter iter; + gchar *name; + + selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (session_list)); + if (gtk_tree_selection_get_selected (selection, &model, &iter)) { + gtk_tree_model_get (model, &iter, 0, &name, -1); + return name; + } + + return NULL; +} + +static void +remove_session (const char *name) +{ + char *path1, *path2; + char *n, *path; + const char *d; + GDir *dir; + GError *error; + + path1 = get_session_path ("saved-session"); + path2 = get_session_path (name); + + error = NULL; + n = g_file_read_link (path1, &error); + if (n == NULL) { + g_warning ("Failed to read link: %s", error->message); + g_error_free (error); + } + else if (strcmp (n, name) == 0) { + unlink (path1); + } + g_free (n); + + dir = g_dir_open (path2, 0, NULL); + while ((d = g_dir_read_name (dir)) != NULL) { + path = g_build_filename (path2, d, NULL); + unlink (path); + g_free (path); + } + g_dir_close (dir); + + remove (path2); + + g_free (path1); + g_free (path2); +} + +static void +on_remove_session_clicked (GtkButton *button, + gpointer data) +{ + GtkTreeSelection *selection; + GtkTreeModel *model; + GtkTreeIter iter; + char *name; + + selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (session_list)); + if (gtk_tree_selection_get_selected (selection, &model, &iter)) { + GtkTreeIter child_iter; + gtk_tree_model_get (model, &iter, 0, &name, -1); + remove_session (name); + g_free (name); + + gtk_tree_model_sort_convert_iter_to_child_iter (GTK_TREE_MODEL_SORT (model), &child_iter, &iter); + gtk_list_store_remove (GTK_LIST_STORE (store), &child_iter); + + if (!gtk_tree_selection_get_selected (selection, NULL, NULL)) { + gtk_tree_model_get_iter_first (model, &iter); + gtk_tree_model_get (model, &iter, 0, &name, -1); + select_session (name); + g_free (name); + } + } +} + +static void +begin_rename (void) +{ + GtkTreePath *path; + GtkTreeViewColumn *column; + GList *cells; + + gtk_widget_grab_focus (session_list); + + gtk_tree_view_get_cursor (GTK_TREE_VIEW (session_list), + &path, &column); + + cells = gtk_cell_layout_get_cells (GTK_CELL_LAYOUT (column)); + + if (cells != NULL) { + GtkCellRenderer *cell; + + cell = (GtkCellRenderer *) cells->data; + g_list_free (cells); + + g_object_set (cell, "editable", TRUE, NULL); + gtk_tree_view_set_cursor_on_cell (GTK_TREE_VIEW (session_list), path, + column, cell, TRUE); + } + gtk_tree_path_free (path); +} + +static void +on_rename_session_clicked (GtkButton *button, + gpointer data) +{ + begin_rename (); +} + +static void +on_continue_clicked (GtkButton *button, + gpointer data) +{ + char *name; + + name = get_selected_session (); + g_free (name); + + gtk_main_quit (); +} + +static void +create_session (const char *name) +{ + char *path; + GtkTreeIter iter; + + path = get_session_path (name); + + if (mkdir (path, 0755) < 0) { + g_warning ("Failed to create directory %s", path); + } + else { + char *marker; + + gtk_list_store_insert_with_values (store, &iter, 100, 0, name, -1); + + marker = g_build_filename (path, ".new-session", NULL); + creat (marker, 0600); + g_free (marker); + } + + g_free (path); +} + +static gboolean +rename_session (const char *old_name, + const char *new_name) +{ + char *old_path, *new_path; + int result; + + if (g_strcmp0 (old_name, new_name) == 0) { + return TRUE; + } + + if (!is_valid_session_name (new_name)) { + return FALSE; + } + + old_path = get_session_path (old_name); + new_path = get_session_path (new_name); + + result = g_rename (old_path, new_path); + + if (result < 0) { + g_warning ("Failed to rename session from '%s' to '%s': %m", old_name, new_name); + } + + g_free (old_path); + g_free (new_path); + + return result == 0; +} + +static gboolean +make_session_current (const char *name) +{ + char *path1; + gboolean ret = TRUE; + + path1 = g_build_filename (g_get_user_config_dir (), "gnome-session", "saved-session", NULL); + + unlink (path1); + if (symlink (name, path1) < 0) { + g_warning ("Failed to make session '%s' current", name); + ret = FALSE; + } + + g_free (path1); + + return ret; +} + +static gboolean +create_and_select_session (const char *name) +{ + gchar *path; + + if (name[0] == 0 || name[0] == '.' || strchr (name, '/')) { + g_warning ("Invalid session name"); + return FALSE; + } + + path = g_build_filename (g_get_user_config_dir (), "gnome-session", name, NULL); + if (!g_file_test (path, G_FILE_TEST_IS_DIR)) { + if (mkdir (path, 0755) < 0) { + g_warning ("Failed to create directory %s", path); + g_free (path); + return FALSE; + } + } + + g_free (path); + + return make_session_current (name); +} + +static void +select_session (const char *name) +{ + GtkTreeIter iter; + char *n; + + make_session_current (name); + + /* now select it in the list */ + gtk_tree_model_get_iter_first (GTK_TREE_MODEL (sort_model), &iter); + do { + gtk_tree_model_get (GTK_TREE_MODEL (sort_model), &iter, 0, &n, -1); + if (strcmp (n, name) == 0) { + GtkTreePath *path; + + path = gtk_tree_model_get_path (GTK_TREE_MODEL (sort_model), &iter); + gtk_tree_view_set_cursor (GTK_TREE_VIEW (session_list), path, NULL, FALSE); + gtk_tree_path_free (path); + g_free (n); + break; + } + g_free (n); + } while (gtk_tree_model_iter_next (GTK_TREE_MODEL (sort_model), &iter)); +} + +static void +on_new_session_clicked (GtkButton *button, + gpointer data) +{ + gchar *name; + + name = find_new_session_name (); + create_session (name); + select_session (name); + + begin_rename (); +} + +static void +on_selection_changed (GtkTreeSelection *selection, + gpointer data) +{ + char *name; + + name = get_selected_session (); + + if (name == NULL) { + return; + } + + make_session_current (name); + + g_free (name); +} + +static void +update_remove_button (void) +{ + GtkWidget *button; + + button = (GtkWidget *)gtk_builder_get_object (builder, "remove-session"); + if (gtk_tree_model_iter_n_children (GTK_TREE_MODEL (store), NULL) > 1) { + gtk_widget_set_sensitive (button, TRUE); + } else { + gtk_widget_set_sensitive (button, FALSE); + } +} + +static void +on_row_edited (GtkCellRendererText *cell, + const char *path_string, + const char *new_name, + gpointer data) +{ + GtkTreePath *path; + GtkTreeIter sort_iter, items_iter; + char *old_name; + gboolean was_renamed; + + path = gtk_tree_path_new_from_string (path_string); + gtk_tree_model_get_iter (GTK_TREE_MODEL (sort_model), &sort_iter, path); + + gtk_tree_model_get (GTK_TREE_MODEL (sort_model), &sort_iter, 0, &old_name, -1); + + was_renamed = rename_session (old_name, new_name); + + if (was_renamed) { + gtk_tree_model_sort_convert_iter_to_child_iter (sort_model, &items_iter, &sort_iter); + + gtk_list_store_set (store, &items_iter, 0, g_strdup (new_name), -1); + g_free (old_name); + make_session_current (new_name); + } else { + begin_rename (); + } + + gtk_tree_path_free (path); + + g_object_set (cell, "editable", FALSE, NULL); +} + +static void +on_row_deleted (GtkTreeModel *model, + GtkTreePath *path, + gpointer data) +{ + update_remove_button (); +} + +static void +on_row_inserted (GtkTreeModel *model, + GtkTreePath *path, + GtkTreeIter *iter, + gpointer data) +{ + update_remove_button (); +} + +static void +on_row_activated (GtkTreeView *tree_view, + GtkTreePath *path, + GtkTreeViewColumn *column, + gpointer data) +{ + char *name; + + name = get_selected_session (); + g_free (name); + + gtk_main_quit (); +} + +static void +auto_save_next_session (void) +{ + GSettings *settings; + + settings = g_settings_new (GSM_MANAGER_SCHEMA); + g_settings_set_boolean (settings, KEY_AUTOSAVE_ONE_SHOT, TRUE); + g_object_unref (settings); +} + +static void +auto_save_next_session_if_needed (void) +{ + char *marker; + + marker = g_build_filename (g_get_user_config_dir (), + "gnome-session", "saved-session", + ".new-session", NULL); + + if (g_file_test (marker, G_FILE_TEST_EXISTS)) { + auto_save_next_session (); + unlink (marker); + } + g_free (marker); +} + +static int +compare_sessions (GtkTreeModel *model, + GtkTreeIter *a, + GtkTreeIter *b, + gpointer data) +{ + char *name_a, *name_b; + int result; + + gtk_tree_model_get (model, a, 0, &name_a, -1); + gtk_tree_model_get (model, b, 0, &name_b, -1); + + result = g_utf8_collate (name_a, name_b); + + g_free (name_a); + g_free (name_b); + + return result; +} + +static void +on_map (GtkWidget *widget, + gpointer data) +{ + gdk_window_focus (gtk_widget_get_window (widget), GDK_CURRENT_TIME); +} + +int +main (int argc, char *argv[]) +{ + GtkWidget *window; + GtkWidget *widget; + GtkCellRenderer *cell; + GtkTreeViewColumn *column; + GtkTreeSelection *selection; + GError *error; + + if (getenv ("SESSION_MANAGER") != NULL) + return 1; + + gtk_init (&argc, &argv); + if (argc > 1) { + g_print ("create and select session\n"); + if (!create_and_select_session (argv[1])) + return 1; + else + return 0; + } + + builder = gtk_builder_new (); + gtk_builder_set_translation_domain (builder, GETTEXT_PACKAGE); + + error = NULL; + if (!gtk_builder_add_from_file (builder, GTKBUILDER_DIR "/" "session-selector.ui", &error)) { + g_warning ("Could not load file 'session-selector.ui': %s", error->message); + exit (1); + } + + window = (GtkWidget *) gtk_builder_get_object (builder, "main-window"); + + store = (GtkListStore *) gtk_builder_get_object (builder, "session-store"); + sort_model = (GtkTreeModelSort *) gtk_builder_get_object (builder, "sort-model"); + + gtk_tree_sortable_set_sort_func (GTK_TREE_SORTABLE (sort_model), + 0, compare_sessions, NULL, NULL); + gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (sort_model), + 0, GTK_SORT_ASCENDING); + g_signal_connect (store, "row-deleted", G_CALLBACK (on_row_deleted), NULL); + g_signal_connect (store, "row-inserted", G_CALLBACK (on_row_inserted), NULL); + session_list = (GtkWidget *) gtk_builder_get_object (builder, "session-list"); + + selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (session_list)); + gtk_tree_selection_set_mode (selection, GTK_SELECTION_SINGLE); + + populate_session_list (session_list); + + cell = gtk_cell_renderer_text_new (); + g_signal_connect (cell, "edited", G_CALLBACK (on_row_edited), NULL); + + column = gtk_tree_view_column_new_with_attributes ("", cell, "text", 0, NULL); + gtk_tree_view_append_column (GTK_TREE_VIEW (session_list), GTK_TREE_VIEW_COLUMN (column)); + + g_signal_connect (session_list, "row-activated", G_CALLBACK (on_row_activated), NULL); + + g_signal_connect (selection, "changed", + G_CALLBACK (on_selection_changed), NULL); + + widget = (GtkWidget *) gtk_builder_get_object (builder, "new-session"); + g_signal_connect (widget, "clicked", G_CALLBACK (on_new_session_clicked), NULL); + widget = (GtkWidget *) gtk_builder_get_object (builder, "remove-session"); + g_signal_connect (widget, "clicked", G_CALLBACK (on_remove_session_clicked), NULL); + widget = (GtkWidget *) gtk_builder_get_object (builder, "rename-session"); + g_signal_connect (widget, "clicked", G_CALLBACK (on_rename_session_clicked), NULL); + widget = (GtkWidget *) gtk_builder_get_object (builder, "continue-button"); + g_signal_connect (widget, "clicked", G_CALLBACK (on_continue_clicked), NULL); + + g_signal_connect (window, "map", G_CALLBACK (on_map), NULL); + gtk_widget_show (window); + + gtk_main (); + + auto_save_next_session_if_needed (); + + return 0; +} |