[gnome-system-monitor] Added ability to navigate tabs using Alt-N.

[Chris Kühl <chriskuehl src gnome org>]

commit a2bccca48724fc5873c72978d11f106af2a6aaf4
Author: Chris Kühl <chrisk openismus com>
Date:   Tue Jun 14 00:01:26 2011 +0200

    Added ability to navigate tabs using Alt-N.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=496750

 src/interface.cpp |   20 ++++++++++++++++++++
 1 files changed, 20 insertions(+), 0 deletions(-)
---
diff --git a/src/interface.cpp b/src/interface.cpp
index ac625d3..9da7b1b 100644
--- a/src/interface.cpp
+++ b/src/interface.cpp
@@ -42,6 +42,7 @@
 #include "gsm_color_button.h"
 
 static void	cb_toggle_tree (GtkAction *action, gpointer data);
+static void	cb_proc_goto_tab (gint tab);
 
 static const GtkActionEntry menu_entries[] =
 {
@@ -602,6 +603,7 @@ disconnect_proxy_cb (GtkUIManager *manager,
 void
 create_main_window (ProcData *procdata)
 {
+	gint i;
 	gint width, height;
 	GtkWidget *app;
 	GtkAction *action;
@@ -712,6 +714,17 @@ create_main_window (ProcData *procdata)
                           G_CALLBACK (cb_app_delete),
                           procdata);
 
+	GtkAccelGroup *accel_group;
+	GClosure *goto_tab_closure[4];
+	accel_group = gtk_accel_group_new ();
+	gtk_window_add_accel_group (GTK_WINDOW(app), accel_group);
+	for (i = 0; i < 4; ++i) {
+		goto_tab_closure[i] = g_cclosure_new_swap (G_CALLBACK (cb_proc_goto_tab),
+							   (gpointer) i, NULL);
+		gtk_accel_group_connect (accel_group, '0'+(i+1),
+					 GDK_MOD1_MASK, GTK_ACCEL_VISIBLE,
+					 goto_tab_closure[i]);
+	}
 
 	/* create the statusbar */
 	procdata->statusbar = gtk_statusbar_new();
@@ -803,3 +816,10 @@ cb_toggle_tree (GtkAction *action, gpointer data)
 
 	g_settings_set_boolean (settings, "show-tree", show);
 }
+
+static void
+cb_proc_goto_tab (gint tab)
+{
+	ProcData *data = ProcData::get_instance ();
+	gtk_notebook_set_current_page (GTK_NOTEBOOK (data->notebook), tab);
+}