Leader key implementation (#326)

* implements leader key for planck experimental

* allows override of leader timeout

* adds ability to use the leader key in seq

* fixes leader keycode

* adds chording prototype

* fixes keycode detection

* moves music mode to quantum.c

* disables chording by default

* updates process_action functions to return bool

1 files changed, 5 insertions, 2 deletions

diff --git a/tmk_core/common/action.c b/tmk_core/common/action.c
index 081e90b2d..c026b96d9 100644
--- a/tmk_core/common/action.c
+++ b/tmk_core/common/action.c
@@ -70,7 +70,9 @@ void process_action_nocache(keyrecord_t *record)
 #endif
 
 __attribute__ ((weak))
-void process_action_kb(keyrecord_t *record) {}
+bool process_action_quantum(keyrecord_t *record) {
+    return true;
+}
 
 void process_action(keyrecord_t *record)
 {
@@ -89,7 +91,8 @@ void process_action(keyrecord_t *record)
     }
 #endif
 
-    process_action_kb(record);
+    if (!process_action_quantum(record))
+        return;
 
     action_t action = store_or_get_action(event.pressed, event.key);
     dprint("ACTION: "); debug_action(action);