1 files changed, 49 insertions, 4 deletions

diff --git a/source/blender/editors/space_buttons/space_buttons.c b/source/blender/editors/space_buttons/space_buttons.c
index e4c23ad74f8..179780bf517 100644
--- a/source/blender/editors/space_buttons/space_buttons.c
+++ b/source/blender/editors/space_buttons/space_buttons.c
@@ -44,6 +44,7 @@
 
 #include "WM_api.h"
 #include "WM_types.h"
+#include "WM_message.h"
 
 #include "RNA_access.h"
 
@@ -147,10 +148,14 @@ static void buttons_main_region_draw(const bContext *C, ARegion *ar)
 		ED_region_panels(C, ar, "scene", sbuts->mainb, vertical);
 	else if (sbuts->mainb == BCONTEXT_RENDER)
 		ED_region_panels(C, ar, "render", sbuts->mainb, vertical);
-	else if (sbuts->mainb == BCONTEXT_RENDER_LAYER)
-		ED_region_panels(C, ar, "render_layer", sbuts->mainb, vertical);
+	else if (sbuts->mainb == BCONTEXT_VIEW_LAYER)
+		ED_region_panels(C, ar, "view_layer", sbuts->mainb, vertical);
 	else if (sbuts->mainb == BCONTEXT_WORLD)
 		ED_region_panels(C, ar, "world", sbuts->mainb, vertical);
+	else if (sbuts->mainb == BCONTEXT_WORKSPACE)
+		ED_region_panels(C, ar, "workspace", sbuts->mainb, vertical);
+	else if (sbuts->mainb == BCONTEXT_COLLECTION)
+		ED_region_panels(C, ar, "collection", sbuts->mainb, vertical);
 	else if (sbuts->mainb == BCONTEXT_OBJECT)
 		ED_region_panels(C, ar, "object", sbuts->mainb, vertical);
 	else if (sbuts->mainb == BCONTEXT_DATA)
@@ -176,6 +181,20 @@ static void buttons_main_region_draw(const bContext *C, ARegion *ar)
 	sbuts->mainbo = sbuts->mainb;
 }
 
+static void buttons_main_region_listener(
+        bScreen *UNUSED(sc), ScrArea *UNUSED(sa), ARegion *ar, wmNotifier *wmn,
+        const Scene *UNUSED(scene))
+{
+	/* context changes */
+	switch (wmn->category) {
+		case NC_SCREEN:
+			if (ELEM(wmn->data, ND_LAYER)) {
+				ED_region_tag_redraw(ar);
+			}
+			break;
+	}
+}
+
 static void buttons_operatortypes(void)
 {
 	WM_operatortype_append(BUTTONS_OT_toolbox);
@@ -206,6 +225,28 @@ static void buttons_header_region_draw(const bContext *C, ARegion *ar)
 	ED_region_header(C, ar);
 }
 
+static void buttons_header_region_message_subscribe(
+        const bContext *UNUSED(C),
+        WorkSpace *UNUSED(workspace), Scene *UNUSED(scene),
+        bScreen *UNUSED(screen), ScrArea *sa, ARegion *ar,
+        struct wmMsgBus *mbus)
+{
+	SpaceButs *sbuts = sa->spacedata.first;
+	wmMsgSubscribeValue msg_sub_value_region_tag_redraw = {
+		.owner = ar,
+		.user_data = ar,
+		.notify = ED_region_do_msg_notify_tag_redraw,
+	};
+
+	/* Don't check for SpaceButs.mainb here, we may toggle between view-layers
+	 * where one has no active object, so that available contexts changes. */
+	WM_msg_subscribe_rna_anon_prop(mbus, Window, view_layer, &msg_sub_value_region_tag_redraw);
+
+	if (!ELEM(sbuts->mainb, BCONTEXT_RENDER, BCONTEXT_SCENE, BCONTEXT_WORLD)) {
+		WM_msg_subscribe_rna_anon_prop(mbus, ViewLayer, name, &msg_sub_value_region_tag_redraw);
+	}
+}
+
 /* draw a certain button set only if properties area is currently
  * showing that button set, to reduce unnecessary drawing. */
 static void buttons_area_redraw(ScrArea *sa, short buttons)
@@ -218,7 +259,9 @@ static void buttons_area_redraw(ScrArea *sa, short buttons)
 }
 
 /* reused! */
-static void buttons_area_listener(bScreen *UNUSED(sc), ScrArea *sa, wmNotifier *wmn)
+static void buttons_area_listener(
+        bScreen *UNUSED(sc), ScrArea *sa, wmNotifier *wmn, Scene *UNUSED(scene),
+        WorkSpace *UNUSED(workspace))
 {
 	SpaceButs *sbuts = sa->spacedata.first;
 
@@ -228,7 +271,7 @@ static void buttons_area_listener(bScreen *UNUSED(sc), ScrArea *sa, wmNotifier *
 			switch (wmn->data) {
 				case ND_RENDER_OPTIONS:
 					buttons_area_redraw(sa, BCONTEXT_RENDER);
-					buttons_area_redraw(sa, BCONTEXT_RENDER_LAYER);
+					buttons_area_redraw(sa, BCONTEXT_VIEW_LAYER);
 					break;
 				case ND_WORLD:
 					buttons_area_redraw(sa, BCONTEXT_WORLD);
@@ -468,6 +511,7 @@ void ED_spacetype_buttons(void)
 	art->regionid = RGN_TYPE_WINDOW;
 	art->init = buttons_main_region_init;
 	art->draw = buttons_main_region_draw;
+	art->listener = buttons_main_region_listener;
 	art->keymapflag = ED_KEYMAP_UI | ED_KEYMAP_FRAMES;
 	BLI_addhead(&st->regiontypes, art);
 
@@ -481,6 +525,7 @@ void ED_spacetype_buttons(void)
 	
 	art->init = buttons_header_region_init;
 	art->draw = buttons_header_region_draw;
+	art->message_subscribe = buttons_header_region_message_subscribe;
 	BLI_addhead(&st->regiontypes, art);
 
 	BKE_spacetype_register(st);