From 9368d980d296ccc90ffc662675545221edf68c2a Mon Sep 17 00:00:00 2001
From: Sergey Udaltsov <svu@gnome.org>
Date: Mon, 11 Jan 2010 02:11:42 +0000
Subject: Counting start/stop masks, changed API

---
 libxklavier/xkl_engine.h       |  6 ++++--
 libxklavier/xklavier.c         | 40 +++++++++++++++++++++++++++++++++-------
 libxklavier/xklavier_private.h |  9 +++++++++
 3 files changed, 46 insertions(+), 9 deletions(-)

diff --git a/libxklavier/xkl_engine.h b/libxklavier/xkl_engine.h
index db40828..b92e741 100644
--- a/libxklavier/xkl_engine.h
+++ b/libxklavier/xkl_engine.h
@@ -217,7 +217,7 @@ extern "C" {
 	typedef enum {
 		XKLL_MANAGE_WINDOW_STATES = 0x01,
 		XKLL_TRACK_KEYBOARD_STATE = 0x02,
-		XKLL_MANAGE_LAYOUTS = 0x04
+		XKLL_MANAGE_LAYOUTS = 0x04,
 	} XklEngineListenModes;
 
 /**
@@ -235,11 +235,13 @@ extern "C" {
 /**
  * xkl_engine_stop_listen:
  * @engine: the engine
+ * @flags: any combination of XKLL_* constants
  *
  * Stops listening for XKB-related events
  * Returns: 0
  */
-	extern gint xkl_engine_stop_listen(XklEngine * engine);
+	extern gint xkl_engine_stop_listen(XklEngine * engine,
+					   guint flags);
 
 /**
  * xkl_engine_pause_listen:
diff --git a/libxklavier/xklavier.c b/libxklavier/xklavier.c
index 1dbd1fb..3d55451 100644
--- a/libxklavier/xklavier.c
+++ b/libxklavier/xklavier.c
@@ -174,7 +174,13 @@ xkl_set_log_appender(XklLogAppender func)
 gint
 xkl_engine_start_listen(XklEngine * engine, guint what)
 {
-	xkl_engine_priv(engine, listener_type) = what;
+	int i;
+	guchar *cntr = xkl_engine_priv(engine, listener_type_counters);
+	for (i = 0; i < XKL_NUMBER_OF_LISTEN_MODES; i++, cntr++)
+		if (what & (1 << i))
+			(*cntr)++;
+
+	xkl_engine_priv(engine, listener_type) |= what;
 
 	if (!
 	    (xkl_engine_priv(engine, features) &
@@ -191,9 +197,20 @@ xkl_engine_start_listen(XklEngine * engine, guint what)
 }
 
 gint
-xkl_engine_stop_listen(XklEngine * engine)
+xkl_engine_stop_listen(XklEngine * engine, guint what)
 {
+	int i;
 	xkl_engine_pause_listen(engine);
+	guchar *cntr = xkl_engine_priv(engine, listener_type_counters);
+	for (i = 0; i < XKL_NUMBER_OF_LISTEN_MODES; i++, cntr++) {
+		int mask = 1 << i;
+		if (what & mask) {
+			if (!--(*cntr))
+				xkl_engine_priv(engine, listener_type) &=
+				    !mask;
+		}
+	}
+
 	return 0;
 }
 
@@ -560,6 +577,8 @@ xkl_engine_lock_group(XklEngine * engine, int group)
 gint
 xkl_engine_pause_listen(XklEngine * engine)
 {
+	xkl_debug(150, "Pause listening (listenerType: %x)\n",
+		  xkl_engine_priv(engine, listener_type));
 	xkl_engine_ensure_vtable_inited(engine);
 	return xkl_engine_vcall(engine, pause_listen) (engine);
 }
@@ -568,8 +587,15 @@ gint
 xkl_engine_resume_listen(XklEngine * engine)
 {
 	xkl_engine_ensure_vtable_inited(engine);
-	xkl_debug(150, "listenerType: %x\n",
-		  xkl_engine_priv(engine, listener_type));
+	int listener_type = xkl_engine_priv(engine, listener_type);
+	xkl_debug(150, "Resume listening, listenerType: %x (%s%s%s)\n",
+		  listener_type,
+		  (listener_type & XKLL_MANAGE_WINDOW_STATES) ?
+		  "XKLL_MANAGE_WINDOW_STATES " : "",
+		  (listener_type & XKLL_TRACK_KEYBOARD_STATE) ?
+		  "XKLL_TRACK_KEYBOARD_STATE " : "",
+		  (listener_type & XKLL_MANAGE_LAYOUTS) ?
+		  "XKLL_MANAGE_LAYOUTS " : "");
 	if (xkl_engine_vcall(engine, resume_listen) (engine))
 		return 1;
 
@@ -624,8 +650,7 @@ xkl_engine_constructor(GType type,
 
 	engine = XKL_ENGINE(obj);
 
-	display =
-	    (Display *)
+	display = (Display *)
 	    g_value_peek_pointer(construct_properties[0].value);
 
 	xkl_engine_priv(engine, display) = display;
@@ -671,7 +696,8 @@ xkl_engine_constructor(GType type,
 			  xkl_engine_get_backend_name(engine));
 	} else {
 		xkl_debug(0, "All backends failed, last result: %d\n", rv);
-		XSetErrorHandler(xkl_engine_priv(engine, default_error_handler));
+		XSetErrorHandler(xkl_engine_priv
+				 (engine, default_error_handler));
 		xkl_engine_priv(engine, display) = NULL;
 		g_object_unref(G_OBJECT(engine));
 		return NULL;
diff --git a/libxklavier/xklavier_private.h b/libxklavier/xklavier_private.h
index 4c120a1..4fbbbd9 100644
--- a/libxklavier/xklavier_private.h
+++ b/libxklavier/xklavier_private.h
@@ -36,6 +36,9 @@ enum { WM_NAME,
 
 #define XKL_NUMBER_OF_REGISTRY_DOCS 2
 
+/* We have 3 values in XklEngineListenModes */
+#define XKL_NUMBER_OF_LISTEN_MODES 3
+
 struct _XklEnginePrivate {
 
 	gboolean group_per_toplevel_window;
@@ -48,6 +51,11 @@ struct _XklEnginePrivate {
 
 	guint listener_type;
 
+	/*
+	 * Separate counter for each of XklEngineListenModes!
+	 */
+	guchar listener_type_counters[XKL_NUMBER_OF_LISTEN_MODES];
+
 	guint secondary_groups_mask;
 
 	Window root_window;
@@ -446,6 +454,7 @@ extern void
 
 
 
+
 xkl_config_registry_foreach_in_xpath_with_param(XklConfigRegistry * config,
 						const gchar * format,
 						const gchar * value,
-- 
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