Refactor: De-duplicate mask operator poll functions

The poll function with same semantic was defined in both screen and
mask space modules. The only reason for this seems to be that the
image editor needed a mask poll function which was private to the
mask module.

Make the mask editing poll functions public, avoiding code duplication.

Also, added a brief explanation about what the poll functions are
checking for.

No user-level changes are expected to happen.

1 files changed, 0 insertions, 26 deletions

diff --git a/source/blender/editors/screen/screen_ops.c b/source/blender/editors/screen/screen_ops.c
index 55721e6380d..212fb846b43 100644
--- a/source/blender/editors/screen/screen_ops.c
+++ b/source/blender/editors/screen/screen_ops.c
@@ -659,32 +659,6 @@ bool ED_operator_editmball(bContext *C)
   return false;
 }
 
-bool ED_operator_mask(bContext *C)
-{
-  ScrArea *area = CTX_wm_area(C);
-  if (area && area->spacedata.first) {
-    switch (area->spacetype) {
-      case SPACE_CLIP: {
-        SpaceClip *space_clip = area->spacedata.first;
-        return ED_space_clip_check_show_maskedit(space_clip);
-      }
-      case SPACE_SEQ: {
-        SpaceSeq *sseq = area->spacedata.first;
-        Scene *scene = CTX_data_scene(C);
-        return ED_space_sequencer_check_show_maskedit(sseq, scene);
-      }
-      case SPACE_IMAGE: {
-        SpaceImage *sima = area->spacedata.first;
-        ViewLayer *view_layer = CTX_data_view_layer(C);
-        Object *obedit = OBEDIT_FROM_VIEW_LAYER(view_layer);
-        return ED_space_image_check_show_maskedit(sima, obedit);
-      }
-    }
-  }
-
-  return false;
-}
-
 bool ED_operator_camera_poll(bContext *C)
 {
   struct Camera *cam = CTX_data_pointer_get_type(C, "camera", &RNA_Camera).data;