Implement support for WM_CLIENT_LEADER

include/data.h

@@ -212,6 +212,10 @@ struct xoutput {
 struct Window {
     xcb_window_t id;
 
+    /** Holds the xcb_window_t (just an ID) for the leader window (logical
+     * parent for toolwindows and similar floating windows) */
+    xcb_window_t leader;
+
     char *class_class;
     char *class_instance;
 

include/handlers.h

@@ -191,6 +191,7 @@ int handle_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t
 int handle_transient_for(void *data, xcb_connection_t *conn, uint8_t state,
                          xcb_window_t window, xcb_atom_t name,
                          xcb_get_property_reply_t *reply);
+#endif
 
 /**
  * Handles changes of the WM_CLIENT_LEADER atom which specifies if this is a
@@ -200,6 +201,5 @@ int handle_transient_for(void *data, xcb_connection_t *conn, uint8_t state,
 int handle_clientleader_change(void *data, xcb_connection_t *conn,
                                uint8_t state, xcb_window_t window,
                                xcb_atom_t name, xcb_get_property_reply_t *prop);
-#endif
 
 #endif

include/window.h

@@ -24,4 +24,10 @@ void window_update_name(i3Window *win, xcb_get_property_reply_t *prop);
  */
 void window_update_name_legacy(i3Window *win, xcb_get_property_reply_t *prop);
 
+/**
+ * Updates the CLIENT_LEADER (logical parent window).
+ *
+ */
+void window_update_leader(i3Window *win, xcb_get_property_reply_t *prop);
+
 #endif