initial import

8 files changed, 504 insertions, 0 deletions

diff --git a/libtopmenu-client/Makefile.am b/libtopmenu-client/Makefile.am
new file mode 100644
index 0000000..b57343b
--- /dev/null
+++ b/libtopmenu-client/Makefile.am
@@ -0,0 +1,8 @@
+lib_LTLIBRARIES = libtopmenu-client.la
+libtopmenu_client_la_SOURCES = topmenu-client.c topmenu-client.h \
+	topmenu-monitor.c topmenu-monitor.h \
+	topmenu-appmenubar.c topmenu-appmenubar.h
+libtopmenu_client_la_CPPFLAGS = $(GTK_CFLAGS) -DG_LOG_DOMAIN=\"topmenu-client\"
+libtopmenu_client_la_LIBADD = $(GTK_LIBS)
+
+include_HEADERS = topmenu-client.h topmenu-monitor.h topmenu-appmenubar.h
diff --git a/libtopmenu-client/topmenu-appmenubar.c b/libtopmenu-client/topmenu-appmenubar.c
new file mode 100644
index 0000000..7d94cf5
--- /dev/null
+++ b/libtopmenu-client/topmenu-appmenubar.c
@@ -0,0 +1,86 @@
+#include "topmenu-appmenubar.h"
+
+G_DEFINE_TYPE(TopMenuAppMenuBar, topmenu_app_menu_bar, GTK_TYPE_MENU_BAR)
+
+enum {
+	PROP_0,
+	PROP_APP_MENU,
+	N_PROPERTIES
+};
+
+static GParamSpec *properties[N_PROPERTIES] = { NULL };
+
+static void topmenu_app_menu_bar_get_property(GObject *obj, guint property_id, GValue *value, GParamSpec *pspec)
+{
+	TopMenuAppMenuBar *self = TOPMENU_APP_MENU_BAR(obj);
+	switch (property_id) {
+	case PROP_APP_MENU:
+		g_value_set_object(value, topmenu_app_menu_bar_get_app_menu(self));
+		break;
+	default:
+		G_OBJECT_WARN_INVALID_PROPERTY_ID(obj, property_id, pspec);
+	}
+}
+
+static void topmenu_app_menu_bar_set_property(GObject *obj, guint property_id, const GValue *value, GParamSpec *pspec)
+{
+	TopMenuAppMenuBar *self = TOPMENU_APP_MENU_BAR(obj);
+	switch (property_id) {
+	case PROP_APP_MENU:
+		topmenu_app_menu_bar_set_app_menu(self, g_value_get_object(value));
+		break;
+	default:
+		G_OBJECT_WARN_INVALID_PROPERTY_ID(obj, property_id, pspec);
+	}
+}
+
+static void topmenu_app_menu_bar_class_init(TopMenuAppMenuBarClass *klass)
+{
+	GObjectClass *obj_class = G_OBJECT_CLASS(klass);
+	obj_class->get_property = topmenu_app_menu_bar_get_property;
+	obj_class->set_property = topmenu_app_menu_bar_set_property;
+
+	properties[PROP_APP_MENU] = g_param_spec_object("app-menu",
+	                                                "Application menu",
+	                                                "The application menu (shown under the application name)",
+	                                                GTK_TYPE_MENU,
+	                                                G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE);
+
+	g_object_class_install_properties(obj_class, N_PROPERTIES, properties);
+
+	gtk_rc_parse_string (
+		"style \"app-menubar-style\"\n"
+		"{\n"
+		"  GtkMenuBar::shadow-type = none\n"
+		"  GtkMenuBar::internal-padding = 0\n"
+		"}\n"
+		"class \"TopMenuAppMenuBar\" style \"app-menubar-style\"");
+}
+
+static void topmenu_app_menu_bar_init(TopMenuAppMenuBar *self)
+{
+	self->app_menu_item = GTK_MENU_ITEM(gtk_menu_item_new_with_label(g_get_application_name()));
+	GtkLabel *app_label = GTK_LABEL(gtk_bin_get_child(GTK_BIN(self->app_menu_item)));
+	PangoAttrList *app_label_attr = pango_attr_list_new();
+	pango_attr_list_insert(app_label_attr, pango_attr_weight_new(PANGO_WEIGHT_BOLD));
+	gtk_label_set_attributes(app_label, app_label_attr);
+	pango_attr_list_unref(app_label_attr);
+	gtk_widget_show(GTK_WIDGET(self->app_menu_item));
+
+	gtk_menu_shell_prepend(GTK_MENU_SHELL(self), GTK_WIDGET(self->app_menu_item));
+}
+
+TopMenuAppMenuBar *topmenu_app_menu_bar_new(void)
+{
+	return TOPMENU_APP_MENU_BAR(g_object_new(TOPMENU_TYPE_APP_MENU_BAR, NULL));
+}
+
+void topmenu_app_menu_bar_set_app_menu(TopMenuAppMenuBar *self, GtkWidget *menu)
+{
+	gtk_menu_item_set_submenu(self->app_menu_item, GTK_WIDGET(menu));
+}
+
+GtkWidget *topmenu_app_menu_bar_get_app_menu(TopMenuAppMenuBar *self)
+{
+	return gtk_menu_item_get_submenu(self->app_menu_item);
+}
diff --git a/libtopmenu-client/topmenu-appmenubar.h b/libtopmenu-client/topmenu-appmenubar.h
new file mode 100644
index 0000000..e2e1344
--- /dev/null
+++ b/libtopmenu-client/topmenu-appmenubar.h
@@ -0,0 +1,38 @@
+#ifndef _TOPMENU_APPMENUBAR_H_
+#define _TOPMENU_APPMENUBAR_H_
+
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+#define TOPMENU_TYPE_APP_MENU_BAR           topmenu_app_menu_bar_get_type()
+#define TOPMENU_APP_MENU_BAR(obj)           (G_TYPE_CHECK_INSTANCE_CAST((obj), TOPMENU_TYPE_APP_MENU_BAR, TopMenuAppMenuBar))
+#define TOPMENU_IS_APP_MENU_BAR(obj)        (G_TYPE_CHECK_INSTANCE_TYPE((obj), TOPMENU_TYPE_APP_MENU_BAR))
+#define TOPMENU_APP_MENU_BAR_CLASS(c)       (G_TYPE_CHECK_CLASS_CAST((c), TOPMENU_TYPE_APP_MENU_BAR, TopMenuAppMenuBarClass))
+#define TOPMENU_IS_APP_MENU_BAR_CLASS(c)    (G_TYPE_CHECK_CLASS_TYPE((c), TOPMENU_TYPE_APP_MENU_BAR))
+#define TOPMENU_APP_MENU_BAR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), TOPMENU_TYPE_APP_MENU_BAR, TopMenuAppMenuBarClass))
+
+typedef struct _TopMenuAppMenuBar        TopMenuAppMenuBar;
+typedef struct _TopMenuAppMenuBarClass   TopMenuAppMenuBarClass;
+
+struct _TopMenuAppMenuBar
+{
+	GtkMenuBar parent_instance;
+	GtkMenuItem *app_menu_item;
+};
+
+struct _TopMenuAppMenuBarClass
+{
+	GtkMenuBarClass parent_class;
+};
+
+GType topmenu_app_menu_bar_get_type(void);
+
+TopMenuAppMenuBar *topmenu_app_menu_bar_new(void);
+
+void topmenu_app_menu_bar_set_app_menu(TopMenuAppMenuBar *self, GtkWidget *menu);
+GtkWidget *topmenu_app_menu_bar_get_app_menu(TopMenuAppMenuBar *self);
+
+G_END_DECLS
+
+#endif /* _TOPMENU_APP_MENU_BAR_H_ */
diff --git a/libtopmenu-client/topmenu-client.c b/libtopmenu-client/topmenu-client.c
new file mode 100644
index 0000000..63e27bc
--- /dev/null
+++ b/libtopmenu-client/topmenu-client.c
@@ -0,0 +1,113 @@
+#include <X11/Xatom.h>
+#include <gdk/gdkx.h>
+
+#include "../global.h"
+
+#include "topmenu-client.h"
+
+#define OBJECT_DATA_KEY_PLUG "topmenu-plug"
+
+static gboolean handle_plug_delete(GtkPlug *plug, GdkEvent *event, GdkWindow *window)
+{
+	return TRUE; // Prevent deletion of plug window
+}
+
+static gboolean handle_widget_button_event(GtkWidget *widget, GdkEvent *event, GtkPlug *plug)
+{
+	if (event->type != GDK_BUTTON_PRESS && event->type != GDK_BUTTON_RELEASE) {
+		return FALSE;
+	}
+	if (event->button.button == 1) {
+		return FALSE;
+	}
+
+	GdkWindow *socket = gtk_plug_get_socket_window(plug);
+	if (socket) {
+		GdkScreen *screen = gdk_window_get_screen(socket);
+		GdkWindow *root = gdk_screen_get_root_window(screen);
+		Display *dpy = GDK_WINDOW_XDISPLAY(socket);
+		Window xwin = GDK_WINDOW_XWINDOW(socket);
+
+		if (event->type == GDK_BUTTON_PRESS) {
+			gdk_display_pointer_ungrab(gtk_widget_get_display(widget),
+									   GDK_CURRENT_TIME);
+		}
+
+		XEvent e;
+		long mask = event->type == GDK_BUTTON_PRESS ? ButtonPressMask : ButtonReleaseMask;
+		e.type = event->type == GDK_BUTTON_PRESS ? ButtonPress : ButtonRelease;
+		e.xbutton.window = xwin;
+		e.xbutton.display = dpy;
+		e.xbutton.root = GDK_WINDOW_XWINDOW(root);
+		e.xbutton.time = event->button.time;
+		e.xbutton.button = event->button.button;
+		e.xbutton.state = event->button.state;
+		e.xbutton.x = event->button.x;
+		e.xbutton.y = event->button.y;
+		e.xbutton.x_root = event->button.x_root;
+		e.xbutton.y_root = event->button.y_root;
+		e.xbutton.same_screen = True;
+
+		gdk_error_trap_push();
+		XSendEvent(dpy, xwin, True, mask, &e);
+		g_debug("Forwarding button %d %s event to 0x%lx",
+				e.xbutton.button,
+				event->type == GDK_BUTTON_PRESS ? "press" : "release",
+				xwin);
+		gdk_flush();
+		gdk_error_trap_pop();
+
+		return TRUE;
+	}
+
+	return FALSE;
+}
+
+void topmenu_client_connect_window_widget(GdkWindow *window, GtkWidget *widget)
+{
+	Display *display = GDK_WINDOW_XDISPLAY(window);
+
+	if (g_object_get_data(G_OBJECT(window), OBJECT_DATA_KEY_PLUG)) {
+		topmenu_client_disconnect_window(window);
+	}
+
+	Window xwin = GDK_WINDOW_XID(window);
+	GtkPlug *plug = GTK_PLUG(gtk_plug_new(0));
+	gtk_container_add(GTK_CONTAINER(plug), widget);
+	g_signal_connect_object(plug, "delete-event",
+	                        G_CALLBACK(handle_plug_delete), window, 0);
+	g_signal_connect_object(widget, "button-press-event",
+		                        G_CALLBACK(handle_widget_button_event), plug, 0);
+	g_signal_connect_object(widget, "button-release-event",
+		                        G_CALLBACK(handle_widget_button_event), plug, 0);
+	gtk_widget_show(GTK_WIDGET(plug));
+
+	Window plug_xwin = gtk_plug_get_id(plug);
+
+	Atom atom = XInternAtom(display, ATOM_TOPMENU_WINDOW, False);
+
+	XChangeProperty(display, xwin, atom,
+	                XA_WINDOW, 32, PropModeReplace,
+	                (unsigned char*)&plug_xwin, 1);
+
+	g_object_set_data_full(G_OBJECT(window), OBJECT_DATA_KEY_PLUG, plug, (GDestroyNotify)&gtk_widget_destroy);
+}
+
+void topmenu_client_disconnect_window(GdkWindow *window)
+{
+	Display *display = GDK_WINDOW_XDISPLAY(window);
+
+	gpointer window_data = g_object_steal_data(G_OBJECT(window), OBJECT_DATA_KEY_PLUG);
+	g_return_if_fail(window_data);
+
+	Window xwin = GDK_WINDOW_XID(window);
+
+	GtkPlug *plug = GTK_PLUG(window_data);
+	g_return_if_fail(plug);
+
+	Atom atom = XInternAtom(display, ATOM_TOPMENU_WINDOW, False);
+
+	XDeleteProperty(display, xwin, atom);
+
+	g_object_unref(plug);
+}
diff --git a/libtopmenu-client/topmenu-client.h b/libtopmenu-client/topmenu-client.h
new file mode 100644
index 0000000..f65eb69
--- /dev/null
+++ b/libtopmenu-client/topmenu-client.h
@@ -0,0 +1,13 @@
+#ifndef _TOPMENU_CLIENT_H_
+#define _TOPMENU_CLIENT_H_
+
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+void topmenu_client_connect_window_widget(GdkWindow *window, GtkWidget *widget);
+void topmenu_client_disconnect_window(GdkWindow *window);
+
+G_END_DECLS
+
+#endif
diff --git a/libtopmenu-client/topmenu-menubar-proxy.h b/libtopmenu-client/topmenu-menubar-proxy.h
new file mode 100644
index 0000000..e601e04
--- /dev/null
+++ b/libtopmenu-client/topmenu-menubar-proxy.h
@@ -0,0 +1,44 @@
+#ifndef _TOPMENU_MENUBAR_PROXY_H_
+#define _TOPMENU_MENUBAR_PROXY_H_
+
+#include <gtk/gtk.h>
+
+G_BEGIN_DECLS
+
+#define TOPMENU_TYPE_MENUBAR_PROXY           topmenu_menubar_proxy_get_type()
+#define TOPMENU_MENUBAR_PROXY(obj)           (G_TYPE_CHECK_INSTANCE_CAST((obj), TOPMENU_TYPE_MENUBAR_PROXY, TopMenuMenuBarProxy))
+#define TOPMENU_IS_MENUBAR_PROXY(obj)        (G_TYPE_CHECK_INSTANCE_TYPE((obj), TOPMENU_TYPE_MENUBAR_PROXY))
+#define TOPMENU_MENUBAR_PROXY_CLASS(c)       (G_TYPE_CHECK_CLASS_CAST((c), TOPMENU_TYPE_MENUBAR_PROXY, TopMenuMenuBarProxyClass))
+#define TOPMENU_IS_MENUBAR_PROXY_CLASS(c)    (G_TYPE_CHECK_CLASS_TYPE((c), TOPMENU_TYPE_MENUBAR_PROXY))
+#define TOPMENU_MENUBAR_PROXY_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), TOPMENU_TYPE_MENUBAR_PROXY, TopMenuMenuBarProxyClass))
+
+typedef struct _TopMenuMenuBarProxy        TopMenuMenuBarProxy;
+typedef struct _TopMenuMenuBarProxyClass   TopMenuMenuBarProxyClass;
+typedef struct _TopMenuMenuBarProxyPrivate TopMenuMenuBarProxyPrivate;
+
+struct _TopMenuMenuBarProxy
+{
+	GtkMenuBar parent_instance;
+	TopMenuMenuBarProxyPrivate *priv;
+	GtkMenuItem *app_menu_item;
+	GtkMenu *app_menu;
+};
+
+struct _TopMenuMenuBarProxyClass
+{
+	GtkMenuBarClass parent_class;
+};
+
+GType topmenu_menubar_proxy_get_type(void);
+
+TopMenuMenuBarProxy *topmenu_menubar_proxy_new(void);
+
+void topmenu_menubar_proxy_add_menu(TopMenuMenuBarProxy *self, GtkMenuShell *shell);
+void topmenu_menubar_proxy_remove_menu(TopMenuMenuBarProxy *self, GtkMenuShell *shell);
+
+typedef enum _MenuItemRole MenuItemRole;
+void topmenu_menubar_proxy_add_app_menu_item(TopMenuMenuBarProxy *self, GtkMenuItem *item, MenuItemRole role);
+
+G_END_DECLS
+
+#endif /* _TOPMENU_MENUBAR_PROXY_H_ */
diff --git a/libtopmenu-client/topmenu-monitor.c b/libtopmenu-client/topmenu-monitor.c
new file mode 100644
index 0000000..abd7522
--- /dev/null
+++ b/libtopmenu-client/topmenu-monitor.c
@@ -0,0 +1,163 @@
+#include <X11/Xatom.h>
+#include <gtk/gtk.h>
+#include <gdk/gdkx.h>
+
+#include "../global.h"
+
+#include "topmenu-monitor.h"
+
+struct _TopMenuMonitorPrivate
+{
+	GdkAtom atom_selection;
+	GtkClipboard *selection;
+	GdkWindow *cur_server;
+};
+
+enum {
+	PROP_0,
+	PROP_AVAILABLE,
+	N_PROPERTIES
+};
+
+G_DEFINE_TYPE(TopMenuMonitor, topmenu_monitor, G_TYPE_OBJECT)
+
+#define TOPMENU_MONITOR_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE((obj), TOPMENU_TYPE_MONITOR, TopMenuMonitorPrivate))
+
+static GParamSpec *properties[N_PROPERTIES] = { NULL };
+
+static void topmenu_monitor_update(TopMenuMonitor *self);
+
+static void handle_clipboard_owner_change(GtkClipboard *clipboard, GdkEvent *event, TopMenuMonitor *self)
+{
+	topmenu_monitor_update(self);
+}
+
+static GdkFilterReturn handle_cur_server_event(GdkXEvent *xevent, GdkEvent *event, gpointer data)
+{
+	XEvent *e = (XEvent*)xevent;
+	if (e->type == DestroyNotify) {
+		g_debug("Current server has been destroyed");
+		TopMenuMonitor *self = TOPMENU_MONITOR(data);
+		if (self->priv->cur_server &&
+		        GDK_WINDOW_XWINDOW(self->priv->cur_server) == e->xdestroywindow.window) {
+			topmenu_monitor_update(self);
+		}
+	}
+	return GDK_FILTER_CONTINUE;
+}
+
+static void topmenu_monitor_set_cur_server(TopMenuMonitor *self, GdkWindow *window)
+{
+	if (self->priv->cur_server == window) {
+		// Nothing to do
+		return;
+	}
+	g_debug("Setting current server to 0x%lx", GDK_WINDOW_XWINDOW(window));
+	if (self->priv->cur_server) {
+		gdk_window_remove_filter(window, handle_cur_server_event, self);
+		gdk_window_unref(self->priv->cur_server);
+		self->priv->cur_server = 0;
+	}
+	if (window) {
+		gdk_window_set_events(window, gdk_window_get_events(window) | GDK_STRUCTURE_MASK);
+		gdk_window_add_filter(window, handle_cur_server_event, self);
+		self->priv->cur_server = window;
+	}
+	if (self->priv->cur_server && !self->available) {
+		// Signal availability
+		self->available = TRUE;
+		g_object_notify_by_pspec(G_OBJECT(self), properties[PROP_AVAILABLE]);
+	} else if (!self->priv->cur_server && self->available) {
+		// Signal no availability
+		self->available = FALSE;
+		g_object_notify_by_pspec(G_OBJECT(self), properties[PROP_AVAILABLE]);
+	}
+}
+
+static void topmenu_monitor_update(TopMenuMonitor *self)
+{
+	GdkScreen *screen = gdk_screen_get_default();
+	GdkDisplay *display = gdk_screen_get_display(screen);
+
+	Display *xdpy = GDK_DISPLAY_XDISPLAY(display);
+	Atom atom = gdk_x11_atom_to_xatom_for_display(display, self->priv->atom_selection);
+
+	Window xwin = XGetSelectionOwner(xdpy, atom);
+
+	if (xwin) {
+		GdkWindow *window = gdk_x11_window_foreign_new_for_display(display, xwin);
+		topmenu_monitor_set_cur_server(self, window);
+	} else {
+		topmenu_monitor_set_cur_server(self, NULL);
+	}
+}
+
+static void topmenu_monitor_get_property(GObject *obj, guint property_id, GValue *value, GParamSpec *pspec)
+{
+	TopMenuMonitor *self = TOPMENU_MONITOR(obj);
+	switch (property_id) {
+	case PROP_AVAILABLE:
+		g_value_set_boolean(value, self->available);
+		break;
+	default:
+		G_OBJECT_WARN_INVALID_PROPERTY_ID(obj, property_id, pspec);
+	}
+}
+
+static void topmenu_monitor_dispose(GObject *obj)
+{
+	TopMenuMonitor *self = TOPMENU_MONITOR(obj);
+	if (self->priv->cur_server) {
+		gdk_window_remove_filter(self->priv->cur_server,
+		                         handle_cur_server_event, self);
+		gdk_window_unref(self->priv->cur_server);
+		self->priv->cur_server = 0;
+	}
+	self->priv->selection = NULL;
+	G_OBJECT_CLASS(topmenu_monitor_parent_class)->dispose(obj);
+}
+
+static void topmenu_monitor_class_init(TopMenuMonitorClass *klass)
+{
+	GObjectClass *obj_class = G_OBJECT_CLASS(klass);
+	obj_class->get_property = topmenu_monitor_get_property;
+	obj_class->dispose = topmenu_monitor_dispose;
+
+	properties[PROP_AVAILABLE] = g_param_spec_boolean("available",
+	                                                  "TopMenu's availability",
+	                                                  "Set to TRUE whether a TopMenu server is currently available",
+	                                                  FALSE,
+	                                                  G_PARAM_STATIC_STRINGS | G_PARAM_READABLE);
+	g_object_class_install_properties(obj_class, N_PROPERTIES, properties);
+
+	g_type_class_add_private(klass, sizeof(TopMenuMonitorPrivate));
+}
+
+static void topmenu_monitor_init(TopMenuMonitor *self)
+{
+	self->priv = TOPMENU_MONITOR_GET_PRIVATE(self);
+	self->available = FALSE;
+
+	self->priv->atom_selection = gdk_atom_intern_static_string(ATOM_TOPMENU_SERVER_SELECTION);
+	self->priv->selection = gtk_clipboard_get(self->priv->atom_selection);
+	self->priv->cur_server = NULL;
+
+	g_signal_connect_object(self->priv->selection, "owner-change",
+	                        G_CALLBACK(handle_clipboard_owner_change), self, 0);
+
+	topmenu_monitor_update(self);
+}
+
+TopMenuMonitor * topmenu_monitor_get_instance()
+{
+	static TopMenuMonitor *instance = NULL;
+	if (!instance) {
+		instance = TOPMENU_MONITOR(g_object_new(TOPMENU_TYPE_MONITOR, NULL));
+	}
+	return instance;
+}
+
+gboolean topmenu_monitor_is_topmenu_available(TopMenuMonitor * self)
+{
+	return self->available;
+}
diff --git a/libtopmenu-client/topmenu-monitor.h b/libtopmenu-client/topmenu-monitor.h
new file mode 100644
index 0000000..afd066c
--- /dev/null
+++ b/libtopmenu-client/topmenu-monitor.h
@@ -0,0 +1,39 @@
+#ifndef _TOPMENU_MONITOR_H_
+#define _TOPMENU_MONITOR_H_
+
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+#define TOPMENU_TYPE_MONITOR           topmenu_monitor_get_type()
+#define TOPMENU_MONITOR(obj)           (G_TYPE_CHECK_INSTANCE_CAST((obj), TOPMENU_TYPE_MONITOR, TopMenuMonitor))
+#define TOPMENU_IS_MONITOR(obj)        (G_TYPE_CHECK_INSTANCE_TYPE((obj), TOPMENU_TYPE_MONITOR))
+#define TOPMENU_MONITOR_CLASS(c)       (G_TYPE_CHECK_CLASS_CAST((c), TOPMENU_TYPE_MONITOR, TopMenuMonitorClass))
+#define TOPMENU_IS_MONITOR_CLASS(c)    (G_TYPE_CHECK_CLASS_TYPE((c), TOPMENU_TYPE_MONITOR))
+#define TOPMENU_MONITOR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj), TOPMENU_TYPE_MONITOR, TopMenuMonitorClass))
+
+typedef struct _TopMenuMonitor        TopMenuMonitor;
+typedef struct _TopMenuMonitorClass   TopMenuMonitorClass;
+typedef struct _TopMenuMonitorPrivate TopMenuMonitorPrivate;
+
+struct _TopMenuMonitor
+{
+	GObject parent_instance;
+	TopMenuMonitorPrivate *priv;
+	gboolean available;
+};
+
+struct _TopMenuMonitorClass
+{
+	GObjectClass parent_class;
+};
+
+GType topmenu_monitor_get_type(void);
+
+TopMenuMonitor * topmenu_monitor_get_instance(void);
+
+gboolean topmenu_monitor_is_topmenu_available(TopMenuMonitor * self);
+
+G_END_DECLS
+
+#endif /* _TOPMENU_MONITOR_H_ */