Allow alternative keymap when keys are locked

To enable support targets must define HAVE_LOCKED_ACTIONS and then
handle the CONTEXT_LOCKED flag from get_context_mapping().

Change-Id: I92703b534e4a45b4ebbf9bf98af42df9b8ac3b1a

apps/action.c

@@ -586,6 +586,13 @@ static inline void action_code_lookup(action_last_t *last, action_cur_t *cur)
 
     cur->is_prebutton = false;
 
+#ifdef HAVE_LOCKED_ACTIONS
+    /* This only applies to the first context, to allow locked contexts to
+     * specify a fall through to their non-locked version */
+    if (is_keys_locked())
+        context |= CONTEXT_LOCKED;
+#endif
+
     for(;;)
     {
         /* logf("context = %x",context); */

apps/action.h

@@ -32,6 +32,9 @@
 #define CONTEXT_CUSTOM  0x40000000 /* | this against anything to get your context number */
 #define CONTEXT_CUSTOM2 0x20000000 /* as above */
 #define CONTEXT_PLUGIN  0x10000000 /* for plugins using get_custom_action */
+#ifdef HAVE_LOCKED_ACTIONS
+#define CONTEXT_LOCKED  0x04000000 /* flag to use alternate keymap when screen is locked */
+#endif
 
 #define LAST_ITEM_IN_LIST { CONTEXT_STOPSEARCHING, BUTTON_NONE, BUTTON_NONE }
 #define LAST_ITEM_IN_LIST__NEXTLIST(a) { a, BUTTON_NONE, BUTTON_NONE }