Allow mouse button event detection in Action Map Editor

editor/action_map_editor.h

@@ -32,6 +32,7 @@
 #define ACTION_MAP_EDITOR_H
 
 #include "editor/editor_data.h"
+#include <scene/gui/color_rect.h>
 
 // Confirmation Dialog used when configuring an input event.
 // Separate from ActionMapEditor for code cleanliness and separation of responsibilities.
@@ -60,6 +61,7 @@ private:
 
 	// Listening for input
 	Label *event_as_text;
+	ColorRect *mouse_detection_rect;
 
 	// List of All Key/Mouse/Joypad input options.
 	int allowed_input_types;