Refactor: Ensure there's always a valid file editor tool region

So far the file browser code had some lazy creation for the tool region,
even though it should always be there. The only reason I can see for
this is compatiblity. So I simply added versioning code to add the
region in case it's not there. Now we should be able to savely assume
the tool region to be there, whithout any unusual lazy-creation.

3 files changed, 5 insertions, 31 deletions

diff --git a/source/blender/editors/space_file/file_intern.h b/source/blender/editors/space_file/file_intern.h
index 701c28abfa2..96a9828236a 100644
--- a/source/blender/editors/space_file/file_intern.h
+++ b/source/blender/editors/space_file/file_intern.h
@@ -109,8 +109,6 @@ void file_sfile_to_operator_ex(bContext *C,
                                char *filepath);
 void file_sfile_to_operator(bContext *C, struct wmOperator *op, struct SpaceFile *sfile);
 
-struct ARegion *file_tools_region_ensure(struct ScrArea *sa, struct ARegion *ar_prev);
-
 void file_operator_to_sfile(bContext *C, struct SpaceFile *sfile, struct wmOperator *op);
 
 /* filesel.c */
diff --git a/source/blender/editors/space_file/file_ops.c b/source/blender/editors/space_file/file_ops.c
index fb8c8c5295d..0224192d559 100644
--- a/source/blender/editors/space_file/file_ops.c
+++ b/source/blender/editors/space_file/file_ops.c
@@ -2318,7 +2318,7 @@ void FILE_OT_hidedot(struct wmOperatorType *ot)
 static int file_bookmark_toggle_exec(bContext *C, wmOperator *UNUSED(unused))
 {
   ScrArea *sa = CTX_wm_area(C);
-  ARegion *ar = file_tools_region_ensure(sa, BKE_area_find_region_type(sa, RGN_TYPE_UI));
+  ARegion *ar = BKE_area_find_region_type(sa, RGN_TYPE_TOOLS);
 
   if (ar) {
     ED_region_toggle_hidden(C, ar);
diff --git a/source/blender/editors/space_file/space_file.c b/source/blender/editors/space_file/space_file.c
index ef7586e9432..d59a75e5e05 100644
--- a/source/blender/editors/space_file/space_file.c
+++ b/source/blender/editors/space_file/space_file.c
@@ -55,27 +55,6 @@
 #include "filelist.h"
 #include "GPU_framebuffer.h"
 
-static ARegion *file_tools_region_create(ListBase *regionbase, ARegion *ar_prev)
-{
-  ARegion *ar = MEM_callocN(sizeof(ARegion), "tools region for file");
-  BLI_insertlinkafter(regionbase, ar_prev, ar);
-  ar->regiontype = RGN_TYPE_TOOLS;
-  ar->alignment = RGN_ALIGN_LEFT;
-
-  return ar;
-}
-
-ARegion *file_tools_region_ensure(ScrArea *sa, ARegion *ar_prev)
-{
-  ARegion *ar;
-
-  if ((ar = BKE_area_find_region_type(sa, RGN_TYPE_TOOLS)) != NULL) {
-    return ar;
-  }
-
-  return file_tools_region_create(&sa->regionbase, ar_prev);
-}
-
 static ARegion *file_tools_options_toggle_region_ensure(ScrArea *sa, ARegion *ar_prev)
 {
   ARegion *ar;
@@ -154,7 +133,10 @@ static SpaceLink *file_new(const ScrArea *UNUSED(area), const Scene *UNUSED(scen
   ar->flag |= RGN_FLAG_DYNAMIC_SIZE;
 
   /* Tools region */
-  file_tools_region_create(&sfile->regionbase, ar);
+  ar = MEM_callocN(sizeof(ARegion), "tools region for file");
+  BLI_addtail(&sfile->regionbase, ar);
+  ar->regiontype = RGN_TYPE_TOOLS;
+  ar->alignment = RGN_ALIGN_LEFT;
 
   /* Options toggle, tool props and execute region are added as needed, see file_refresh(). */
 
@@ -276,18 +258,12 @@ static void file_ensure_valid_region_state(bContext *C,
                                            SpaceFile *sfile,
                                            FileSelectParams *params)
 {
-  ARegion *ar_ui = BKE_area_find_region_type(sa, RGN_TYPE_UI);
   ARegion *ar_tools_upper = BKE_area_find_region_type(sa, RGN_TYPE_TOOLS);
   ARegion *ar_props = BKE_area_find_region_type(sa, RGN_TYPE_TOOL_PROPS);
   ARegion *ar_execute = BKE_area_find_region_type(sa, RGN_TYPE_EXECUTE);
   ARegion *ar_tools_lower;
   bool needs_init = false; /* To avoid multiple ED_area_initialize() calls. */
 
-  if (ar_tools_upper == NULL) {
-    ar_tools_upper = file_tools_region_ensure(sa, ar_ui);
-    needs_init = true;
-  }
-
   /* If there's an file-operation, ensure we have the option and execute region */
   if (sfile->op && (ar_props == NULL)) {
     ar_tools_lower = file_tools_options_toggle_region_ensure(sa, ar_tools_upper);