UI: Properties editor popover and outliner sync

This adds a popover to the properties editor. Currently the only setting
is for controlling outliner to properties syncing.

Because we cannot define a perfect heuristic to determine when
properties editors should change tabs based on outliner icon selection,
we need an option to enable or disable this behavior per properties
editor.

There are 3 options for controlling the syncing. Auto uses the heuristic
to only allow tab switching when a properties editor and outliner share
a border. On and off enable and disable syncing respectively.

Differential Revision: https://developer.blender.org/D9758

1 files changed, 19 insertions, 1 deletions

diff --git a/source/blender/editors/space_outliner/outliner_select.c b/source/blender/editors/space_outliner/outliner_select.c
index 6380bb9505e..f8812ff5970 100644
--- a/source/blender/editors/space_outliner/outliner_select.c
+++ b/source/blender/editors/space_outliner/outliner_select.c
@@ -1105,6 +1105,24 @@ bPoseChannel *outliner_find_parent_bone(TreeElement *te, TreeElement **r_bone_te
   return NULL;
 }
 
+static void outliner_sync_to_properties_editors(const bContext *C,
+                                                PointerRNA *ptr,
+                                                const int context)
+{
+  bScreen *screen = CTX_wm_screen(C);
+
+  LISTBASE_FOREACH (ScrArea *, area, &screen->areabase) {
+    if (area->spacetype != SPACE_PROPERTIES) {
+      continue;
+    }
+
+    SpaceProperties *sbuts = (SpaceProperties *)area->spacedata.first;
+    if (ED_buttons_should_sync_with_outliner(C, sbuts, area)) {
+      ED_buttons_set_context(C, sbuts, ptr, context);
+    }
+  }
+}
+
 static void outliner_set_properties_tab(bContext *C, TreeElement *te, TreeStoreElem *tselem)
 {
   PointerRNA ptr = {0};
@@ -1285,7 +1303,7 @@ static void outliner_set_properties_tab(bContext *C, TreeElement *te, TreeStoreE
   }
 
   if (ptr.data) {
-    ED_buttons_set_context(C, &ptr, context);
+    outliner_sync_to_properties_editors(C, &ptr, context);
   }
 }