From 0e47e57eb77d0c84ce3b9aa6b9c502a50f0ea6f2 Mon Sep 17 00:00:00 2001
From: Nathan Craddock <nzcraddock@gmail.com>
Date: Wed, 28 Oct 2020 11:43:10 -0600
Subject: Outliner: Properties editor sync on selection

When outliner datablocks are selected, switch to the corresponding tab
for that datablock in properties editors. Only properties editors
that share an edge with the outliner will change tabs.

Additionally, when modifiers, constraints, and shader effects are
selected from the outliner, the panel will be expanded in all properties
editors.

Part of T77408

Manifest Task: https://developer.blender.org/T63991

Differential Revision: https://developer.blender.org/D8638
---
 .../editors/space_buttons/buttons_context.c        | 44 +++++++++++++++++++---
 1 file changed, 39 insertions(+), 5 deletions(-)

(limited to 'source/blender/editors/space_buttons/buttons_context.c')

diff --git a/source/blender/editors/space_buttons/buttons_context.c b/source/blender/editors/space_buttons/buttons_context.c
index 60ce86740cd..8fc16e66466 100644
--- a/source/blender/editors/space_buttons/buttons_context.c
+++ b/source/blender/editors/space_buttons/buttons_context.c
@@ -56,6 +56,7 @@
 
 #include "RNA_access.h"
 
+#include "ED_buttons.h"
 #include "ED_physics.h"
 #include "ED_screen.h"
 
@@ -512,11 +513,11 @@ static bool buttons_context_linestyle_pinnable(const bContext *C, ViewLayer *vie
 }
 #endif
 
-static bool buttons_context_path(const bContext *C, ButsContextPath *path, int mainb, int flag)
+static bool buttons_context_path(
+    const bContext *C, SpaceProperties *sbuts, ButsContextPath *path, int mainb, int flag)
 {
   /* Note we don't use CTX_data here, instead we get it from the window.
    * Otherwise there is a loop reading the context that we are setting. */
-  SpaceProperties *sbuts = CTX_wm_space_properties(C);
   wmWindow *window = CTX_wm_window(C);
   Scene *scene = WM_window_get_active_scene(window);
   ViewLayer *view_layer = WM_window_get_active_view_layer(window);
@@ -660,14 +661,14 @@ void buttons_context_compute(const bContext *C, SpaceProperties *sbuts)
   int flag = 0;
 
   /* Set scene path. */
-  buttons_context_path(C, path, BCONTEXT_SCENE, pflag);
+  buttons_context_path(C, sbuts, path, BCONTEXT_SCENE, pflag);
 
   buttons_texture_context_compute(C, sbuts);
 
   /* for each context, see if we can compute a valid path to it, if
    * this is the case, we know we have to display the button */
   for (int i = 0; i < BCONTEXT_TOT; i++) {
-    if (buttons_context_path(C, path, i, pflag)) {
+    if (buttons_context_path(C, sbuts, path, i, pflag)) {
       flag |= (1 << i);
 
       /* setting icon for data context */
@@ -713,7 +714,7 @@ void buttons_context_compute(const bContext *C, SpaceProperties *sbuts)
     }
   }
 
-  buttons_context_path(C, path, sbuts->mainb, pflag);
+  buttons_context_path(C, sbuts, path, sbuts->mainb, pflag);
 
   if (!(flag & (1 << sbuts->mainb))) {
     if (flag & (1 << BCONTEXT_OBJECT)) {
@@ -734,6 +735,39 @@ void buttons_context_compute(const bContext *C, SpaceProperties *sbuts)
   sbuts->pathflag = flag;
 }
 
+static bool is_pointer_in_path(ButsContextPath *path, PointerRNA *ptr)
+{
+  for (int i = 0; i < path->len; ++i) {
+    if (ptr->owner_id == path->ptr[i].owner_id) {
+      return true;
+    }
+  }
+  return false;
+}
+
+void ED_buttons_set_context(const bContext *C, PointerRNA *ptr, const int context)
+{
+  ScrArea *active_area = CTX_wm_area(C);
+  bScreen *screen = CTX_wm_screen(C);
+
+  LISTBASE_FOREACH (ScrArea *, area, &screen->areabase) {
+    /* Only update for properties editors that are visible and share a border. */
+    if (area->spacetype != SPACE_PROPERTIES) {
+      continue;
+    }
+    if (!ED_area_has_shared_border(active_area, area)) {
+      continue;
+    }
+
+    SpaceProperties *sbuts = (SpaceProperties *)area->spacedata.first;
+    ButsContextPath path;
+    if (buttons_context_path(C, sbuts, &path, context, 0) && is_pointer_in_path(&path, ptr)) {
+      sbuts->mainbuser = context;
+      sbuts->mainb = sbuts->mainbuser;
+    }
+  }
+}
+
 /************************* Context Callback ************************/
 
 const char *buttons_context_dir[] = {
-- 
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