Adding upstream version 43.0.upstream/43.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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;
+}