Send WM_TAKE_FOCUS when setting focus (fixes java problems)

include/i3.h

@@ -21,7 +21,7 @@
 #ifndef _I3_H
 #define _I3_H
 
-#define NUM_ATOMS 21
+#define NUM_ATOMS 22
 
 extern xcb_connection_t *global_conn;
 extern xcb_key_symbols_t *keysyms;

include/util.h

@@ -126,6 +126,12 @@ char *convert_utf8_to_ucs2(char *input, int *real_strlen);
 Client *get_last_focused_client(xcb_connection_t *conn, Container *container,
                                 Client *exclude);
 
+/**
+ * Sends WM_TAKE_FOCUS to the client
+ *
+ */
+void take_focus(xcb_connection_t *conn, Client *client);
+
 /**
  * Sets the given client as focused by updating the data structures correctly,
  * updating the X input focus and finally re-decorating both windows (to

include/xcb.h

@@ -64,7 +64,8 @@ enum { _NET_SUPPORTED = 0,
         WM_CLIENT_LEADER,
         _NET_CURRENT_DESKTOP,
         _NET_ACTIVE_WINDOW,
-        _NET_WORKAREA
+        _NET_WORKAREA,
+        WM_TAKE_FOCUS
 };
 
 extern unsigned int xcb_numlock_mask;