introduce get_current_tags() and deprecate get_current_{tag,layout}()

layout.h

@@ -27,8 +27,8 @@
 #define AWESOMEPROPS_ATOM(disp)                    XInternAtom(disp, "_AWESOME_PROPERTIES", False)
 
 void arrange(int);
-Layout * get_current_layout(int);
+Layout * get_current_layout(int) __attribute__ ((deprecated));
-Tag * get_current_tag(int);
+Tag * get_current_tag(int) __attribute__ ((deprecated));
 void restack(int);
 void loadawesomeprops(int);
 void saveawesomeprops(int);

tag.c

@@ -137,6 +137,27 @@ tag_client_with_rules(Client *c)
         }
 }
 
+
+Tag **
+get_current_tags(int screen)
+{
+    Tag *tag, **tags = NULL;
+    int n = 0;
+
+    for(tag = globalconf.screens[screen].tags; tag; tag = tag->next)
+        if(tag->selected)
+        {
+            p_realloc(tags, ++n);
+            tags[n - 1] = tag;
+        }
+
+    /* finish with null */
+    p_realloc(tags, ++n);
+    tags[n - 1] = NULL;
+
+    return tags;
+}
+
 /** Tag selected window with tag
  * \param screen Screen ID
  * \param arg Tag name

tag.h

@@ -27,6 +27,7 @@
 /** Check if a client is tiled */
 #define IS_TILED(client, screen)            (client && !client->isfloating && client_isvisible(client, screen))
 
+Tag ** get_current_tags(int );
 void tag_client(Client *, Tag *, int);
 void untag_client(Client *, Tag *, int);
 Bool is_client_tagged(Client *, Tag *, int);