WM: support dynamic keymap handlers

Add getter callback support for 'WM_HANDLER_TYPE_KEYMAP' type handlers
this is needed for key-maps which change based on the active tool.

Replaces 'sneaky_handler' hack which temporarily inserted a handler.

1 files changed, 6 insertions, 0 deletions

diff --git a/source/blender/windowmanager/wm_event_system.h b/source/blender/windowmanager/wm_event_system.h
index ab59f52f125..cd7a5102809 100644
--- a/source/blender/windowmanager/wm_event_system.h
+++ b/source/blender/windowmanager/wm_event_system.h
@@ -68,6 +68,12 @@ typedef struct wmEventHandler_Keymap {
 	/** Run after the keymap item runs. */
 	struct wmEventHandler_KeymapFn keymap_callback;
 
+	/** Support for a getter function that looks up the keymap each access. */
+	struct {
+		wmEventHandler_KeymapDynamicFn *keymap_fn;
+		void *user_data;
+	} dynamic;
+
 	struct bToolRef *keymap_tool;
 } wmEventHandler_Keymap;