Outliner: Compile all Outliner files in C++

We want to refactor quite some of the Outliner code using C++, this is a
logical step to help the transition to a new architecture.

Includes plenty of fixes to make this compile without warnings, trying
not to change logic. The usual stuff (casts from `void *`, designated
initializers, compound literals, etc.).

1 files changed, 0 insertions, 2036 deletions

diff --git a/source/blender/editors/space_outliner/outliner_select.c b/source/blender/editors/space_outliner/outliner_select.c
deleted file mode 100644
index 855975eb2dc..00000000000
--- a/source/blender/editors/space_outliner/outliner_select.c
+++ /dev/null
@@ -1,2036 +0,0 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2004 Blender Foundation.
- * All rights reserved.
- */
-
-/** \file
- * \ingroup spoutliner
- */
-
-#include <stdlib.h>
-
-#include "MEM_guardedalloc.h"
-
-#include "DNA_armature_types.h"
-#include "DNA_collection_types.h"
-#include "DNA_gpencil_modifier_types.h"
-#include "DNA_gpencil_types.h"
-#include "DNA_modifier_types.h"
-#include "DNA_object_types.h"
-#include "DNA_scene_types.h"
-#include "DNA_sequence_types.h"
-#include "DNA_shader_fx_types.h"
-#include "DNA_text_types.h"
-
-#include "BLI_listbase.h"
-#include "BLI_utildefines.h"
-
-#include "BKE_armature.h"
-#include "BKE_collection.h"
-#include "BKE_constraint.h"
-#include "BKE_context.h"
-#include "BKE_deform.h"
-#include "BKE_gpencil.h"
-#include "BKE_gpencil_modifier.h"
-#include "BKE_layer.h"
-#include "BKE_main.h"
-#include "BKE_modifier.h"
-#include "BKE_object.h"
-#include "BKE_particle.h"
-#include "BKE_report.h"
-#include "BKE_shader_fx.h"
-
-#include "DEG_depsgraph.h"
-#include "DEG_depsgraph_build.h"
-
-#include "ED_armature.h"
-#include "ED_buttons.h"
-#include "ED_object.h"
-#include "ED_outliner.h"
-#include "ED_screen.h"
-#include "ED_select_utils.h"
-#include "ED_sequencer.h"
-#include "ED_text.h"
-#include "ED_undo.h"
-
-#include "SEQ_select.h"
-#include "SEQ_sequencer.h"
-
-#include "WM_api.h"
-#include "WM_types.h"
-
-#include "UI_interface.h"
-#include "UI_view2d.h"
-
-#include "RNA_access.h"
-#include "RNA_define.h"
-
-#include "outliner_intern.h"
-
-/**
- * \note changes to selection are by convention and not essential.
- *
- * \note Handles own undo push.
- */
-static void do_outliner_item_editmode_toggle(bContext *C, Scene *scene, Base *base)
-{
-  Main *bmain = CTX_data_main(C);
-  Object *ob = base->object;
-
-  bool changed = false;
-  if (BKE_object_is_in_editmode(ob)) {
-    changed = ED_object_editmode_exit_ex(bmain, scene, ob, EM_FREEDATA);
-    if (changed) {
-      ED_object_base_select(base, BA_DESELECT);
-      WM_event_add_notifier(C, NC_SCENE | ND_MODE | NS_MODE_OBJECT, NULL);
-    }
-  }
-  else {
-    changed = ED_object_editmode_enter_ex(CTX_data_main(C), scene, ob, EM_NO_CONTEXT);
-    if (changed) {
-      ED_object_base_select(base, BA_SELECT);
-      WM_event_add_notifier(C, NC_SCENE | ND_MODE, NULL);
-    }
-  }
-
-  if (changed) {
-    DEG_id_tag_update(&scene->id, ID_RECALC_SELECT);
-    ED_outliner_select_sync_from_object_tag(C);
-    ED_undo_push(C, "Outliner Edit Mode Toggle");
-  }
-}
-
-/**
- * \note changes to selection are by convention and not essential.
- *
- * \note Handles own undo push.
- */
-static void do_outliner_item_posemode_toggle(bContext *C, Scene *scene, Base *base)
-{
-  Main *bmain = CTX_data_main(C);
-  Object *ob = base->object;
-
-  if (ID_IS_LINKED(ob)) {
-    BKE_report(CTX_wm_reports(C), RPT_WARNING, "Cannot pose libdata");
-    return;
-  }
-
-  bool changed = false;
-  if (ob->mode & OB_MODE_POSE) {
-    changed = ED_object_posemode_exit_ex(bmain, ob);
-    if (changed) {
-      ED_object_base_select(base, BA_DESELECT);
-      WM_event_add_notifier(C, NC_SCENE | ND_MODE | NS_MODE_OBJECT, NULL);
-    }
-  }
-  else {
-    changed = ED_object_posemode_enter_ex(bmain, ob);
-    if (changed) {
-      ED_object_base_select(base, BA_SELECT);
-      WM_event_add_notifier(C, NC_SCENE | ND_MODE | NS_MODE_POSE, NULL);
-    }
-  }
-
-  if (changed) {
-    DEG_id_tag_update(&scene->id, ID_RECALC_SELECT);
-    ED_outliner_select_sync_from_object_tag(C);
-    ED_undo_push(C, "Outliner Pose Mode Toggle");
-  }
-}
-
-/**
- * Swap the current active object from the interaction mode with the given base.
- *
- * \note Changes to selection _are_ needed in this case,
- * since entering the object mode uses the selection.
- *
- * If we didn't want to touch selection we could add an option to the operators
- * not to do multi-object editing.
- *
- * \note Handles own undo push.
- */
-static void do_outliner_item_mode_toggle_generic(bContext *C, TreeViewContext *tvc, Base *base)
-{
-  const int active_mode = tvc->obact->mode;
-  ED_undo_group_begin(C);
-
-  if (ED_object_mode_set(C, OB_MODE_OBJECT)) {
-    Base *base_active = BKE_view_layer_base_find(tvc->view_layer, tvc->obact);
-    if (base_active != base) {
-      BKE_view_layer_base_deselect_all(tvc->view_layer);
-      BKE_view_layer_base_select_and_set_active(tvc->view_layer, base);
-      DEG_id_tag_update(&tvc->scene->id, ID_RECALC_SELECT);
-      ED_undo_push(C, "Change Active");
-
-      /* Operator call does undo push. */
-      ED_object_mode_set(C, active_mode);
-      ED_outliner_select_sync_from_object_tag(C);
-    }
-  }
-  ED_undo_group_end(C);
-}
-
-void outliner_item_mode_toggle(bContext *C,
-                               TreeViewContext *tvc,
-                               TreeElement *te,
-                               const bool do_extend)
-{
-  TreeStoreElem *tselem = TREESTORE(te);
-
-  if ((tselem->type == TSE_SOME_ID) && (te->idcode == ID_OB)) {
-    Object *ob = (Object *)tselem->id;
-    Base *base = BKE_view_layer_base_find(tvc->view_layer, ob);
-
-    /* Hidden objects can be removed from the mode. */
-    if (!base || (!(base->flag & BASE_VISIBLE_DEPSGRAPH) && (ob->mode != tvc->obact->mode))) {
-      return;
-    }
-
-    if (!do_extend) {
-      do_outliner_item_mode_toggle_generic(C, tvc, base);
-    }
-    else if (tvc->ob_edit && OB_TYPE_SUPPORT_EDITMODE(ob->type)) {
-      do_outliner_item_editmode_toggle(C, tvc->scene, base);
-    }
-    else if (tvc->ob_pose && ob->type == OB_ARMATURE) {
-      do_outliner_item_posemode_toggle(C, tvc->scene, base);
-    }
-  }
-}
-
-/* ****************************************************** */
-/* Outliner Element Selection/Activation on Click */
-
-static void tree_element_viewlayer_activate(bContext *C, TreeElement *te)
-{
-  /* paranoia check */
-  if (te->idcode != ID_SCE) {
-    return;
-  }
-
-  ViewLayer *view_layer = te->directdata;
-  wmWindow *win = CTX_wm_window(C);
-  Scene *scene = WM_window_get_active_scene(win);
-
-  if (BLI_findindex(&scene->view_layers, view_layer) != -1) {
-    WM_window_set_active_view_layer(win, view_layer);
-    WM_event_add_notifier(C, NC_SCREEN | ND_LAYER, NULL);
-  }
-}
-
-/**
- * Select object tree
- */
-static void do_outliner_object_select_recursive(ViewLayer *view_layer,
-                                                Object *ob_parent,
-                                                bool select)
-{
-  Base *base;
-
-  for (base = FIRSTBASE(view_layer); base; base = base->next) {
-    Object *ob = base->object;
-    if ((((base->flag & BASE_VISIBLE_DEPSGRAPH) != 0) &&
-         BKE_object_is_child_recursive(ob_parent, ob))) {
-      ED_object_base_select(base, select ? BA_SELECT : BA_DESELECT);
-    }
-  }
-}
-
-static void do_outliner_bone_select_recursive(bArmature *arm, Bone *bone_parent, bool select)
-{
-  Bone *bone;
-  for (bone = bone_parent->childbase.first; bone; bone = bone->next) {
-    if (select && PBONE_SELECTABLE(arm, bone)) {
-      bone->flag |= BONE_SELECTED;
-    }
-    else {
-      bone->flag &= ~(BONE_TIPSEL | BONE_SELECTED | BONE_ROOTSEL);
-    }
-    do_outliner_bone_select_recursive(arm, bone, select);
-  }
-}
-
-static void do_outliner_ebone_select_recursive(bArmature *arm, EditBone *ebone_parent, bool select)
-{
-  EditBone *ebone;
-  for (ebone = ebone_parent->next; ebone; ebone = ebone->next) {
-    if (ED_armature_ebone_is_child_recursive(ebone_parent, ebone)) {
-      if (select && EBONE_SELECTABLE(arm, ebone)) {
-        ebone->flag |= BONE_TIPSEL | BONE_SELECTED | BONE_ROOTSEL;
-      }
-      else {
-        ebone->flag &= ~(BONE_TIPSEL | BONE_SELECTED | BONE_ROOTSEL);
-      }
-    }
-  }
-}
-
-static void tree_element_object_activate(bContext *C,
-                                         Scene *scene,
-                                         ViewLayer *view_layer,
-                                         TreeElement *te,
-                                         const eOLSetState set,
-                                         bool recursive)
-{
-  TreeStoreElem *tselem = TREESTORE(te);
-  TreeStoreElem *parent_tselem = NULL;
-  TreeElement *parent_te = NULL;
-  Scene *sce;
-  Base *base;
-  Object *ob = NULL;
-
-  /* if id is not object, we search back */
-  if ((tselem->type == TSE_SOME_ID) && (te->idcode == ID_OB)) {
-    ob = (Object *)tselem->id;
-  }
-  else {
-    parent_te = outliner_search_back_te(te, ID_OB);
-    if (parent_te) {
-      parent_tselem = TREESTORE(parent_te);
-      ob = (Object *)parent_tselem->id;
-
-      /* Don't return when activating children of the previous active object. */
-      if (ob == OBACT(view_layer) && set == OL_SETSEL_NONE) {
-        return;
-      }
-    }
-  }
-  if (ob == NULL) {
-    return;
-  }
-
-  sce = (Scene *)outliner_search_back(te, ID_SCE);
-  if (sce && scene != sce) {
-    WM_window_set_active_scene(CTX_data_main(C), C, CTX_wm_window(C), sce);
-    scene = sce;
-  }
-
-  /* find associated base in current scene */
-  base = BKE_view_layer_base_find(view_layer, ob);
-
-  if (scene->toolsettings->object_flag & SCE_OBJECT_MODE_LOCK) {
-    if (base != NULL) {
-      Object *obact = OBACT(view_layer);
-      const eObjectMode object_mode = obact ? obact->mode : OB_MODE_OBJECT;
-      if (base && !BKE_object_is_mode_compat(base->object, object_mode)) {
-        if (object_mode == OB_MODE_OBJECT) {
-          struct Main *bmain = CTX_data_main(C);
-          Depsgraph *depsgraph = CTX_data_ensure_evaluated_depsgraph(C);
-          ED_object_mode_generic_exit(bmain, depsgraph, scene, base->object);
-        }
-        if (!BKE_object_is_mode_compat(base->object, object_mode)) {
-          base = NULL;
-        }
-      }
-    }
-  }
-
-  if (base) {
-    if (set == OL_SETSEL_EXTEND) {
-      /* swap select */
-      if (base->flag & BASE_SELECTED) {
-        ED_object_base_select(base, BA_DESELECT);
-        if (parent_tselem) {
-          parent_tselem->flag &= ~TSE_SELECTED;
-        }
-      }
-      else {
-        ED_object_base_select(base, BA_SELECT);
-        if (parent_tselem) {
-          parent_tselem->flag |= TSE_SELECTED;
-        }
-      }
-    }
-    else {
-      /* deleselect all */
-
-      /* Only in object mode so we can switch the active object,
-       * keeping all objects in the current 'mode' selected, useful for multi-pose/edit mode.
-       * This keeps the convention that all objects in the current mode are also selected.
-       * see T55246. */
-      if ((scene->toolsettings->object_flag & SCE_OBJECT_MODE_LOCK) ?
-              (ob->mode == OB_MODE_OBJECT) :
-              true) {
-        BKE_view_layer_base_deselect_all(view_layer);
-      }
-      ED_object_base_select(base, BA_SELECT);
-      if (parent_tselem) {
-        parent_tselem->flag |= TSE_SELECTED;
-      }
-    }
-
-    if (recursive) {
-      /* Recursive select/deselect for Object hierarchies */
-      do_outliner_object_select_recursive(view_layer, ob, (base->flag & BASE_SELECTED) != 0);
-    }
-
-    if (set != OL_SETSEL_NONE) {
-      ED_object_base_activate_with_mode_exit_if_needed(C, base); /* adds notifier */
-      DEG_id_tag_update(&scene->id, ID_RECALC_SELECT);
-      WM_event_add_notifier(C, NC_SCENE | ND_OB_SELECT, scene);
-    }
-  }
-}
-
-static void tree_element_material_activate(bContext *C, ViewLayer *view_layer, TreeElement *te)
-{
-  /* we search for the object parent */
-  Object *ob = (Object *)outliner_search_back(te, ID_OB);
-  /* Note : ob->matbits can be NULL when a local object points to a library mesh. */
-  if (ob == NULL || ob != OBACT(view_layer) || ob->matbits == NULL) {
-    return; /* just paranoia */
-  }
-
-  /* In ob mat array? */
-  TreeElement *tes = te->parent;
-  if (tes->idcode == ID_OB) {
-    ob->actcol = te->index + 1;
-    ob->matbits[te->index] = 1; /* Make ob material active too. */
-  }
-  else {
-    /* or in obdata material */
-    ob->actcol = te->index + 1;
-    ob->matbits[te->index] = 0; /* Make obdata material active too. */
-  }
-
-  /* Tagging object for update seems a bit stupid here, but looks like we have to do it
-   * for render views to update. See T42973.
-   * Note that RNA material update does it too, see e.g. rna_MaterialSlot_update(). */
-  DEG_id_tag_update((ID *)ob, ID_RECALC_TRANSFORM);
-  WM_event_add_notifier(C, NC_MATERIAL | ND_SHADING_LINKS, NULL);
-}
-
-static void tree_element_camera_activate(bContext *C, Scene *scene, TreeElement *te)
-{
-  Object *ob = (Object *)outliner_search_back(te, ID_OB);
-
-  scene->camera = ob;
-
-  Main *bmain = CTX_data_main(C);
-  wmWindowManager *wm = bmain->wm.first;
-
-  WM_windows_scene_data_sync(&wm->windows, scene);
-  DEG_id_tag_update(&scene->id, ID_RECALC_COPY_ON_WRITE);
-  DEG_relations_tag_update(bmain);
-  WM_event_add_notifier(C, NC_SCENE | NA_EDITED, NULL);
-}
-
-static void tree_element_world_activate(bContext *C, Scene *scene, TreeElement *te)
-{
-  Scene *sce = NULL;
-
-  TreeElement *tep = te->parent;
-  if (tep) {
-    TreeStoreElem *tselem = TREESTORE(tep);
-    if (tselem->type == TSE_SOME_ID) {
-      sce = (Scene *)tselem->id;
-    }
-  }
-
-  /* make new scene active */
-  if (sce && scene != sce) {
-    WM_window_set_active_scene(CTX_data_main(C), C, CTX_wm_window(C), sce);
-  }
-}
-
-static void tree_element_defgroup_activate(bContext *C, TreeElement *te, TreeStoreElem *tselem)
-{
-  /* id in tselem is object */
-  Object *ob = (Object *)tselem->id;
-  BLI_assert(te->index + 1 >= 0);
-  BKE_object_defgroup_active_index_set(ob, te->index + 1);
-
-  DEG_id_tag_update(&ob->id, ID_RECALC_GEOMETRY);
-  WM_event_add_notifier(C, NC_OBJECT | ND_TRANSFORM, ob);
-}
-
-static void tree_element_gplayer_activate(bContext *C, TreeElement *te, TreeStoreElem *tselem)
-{
-  bGPdata *gpd = (bGPdata *)tselem->id;
-  bGPDlayer *gpl = te->directdata;
-
-  /* We can only have a single "active" layer at a time
-   * and there must always be an active layer... */
-  if (gpl) {
-    BKE_gpencil_layer_active_set(gpd, gpl);
-    DEG_id_tag_update(&gpd->id, ID_RECALC_GEOMETRY);
-    WM_event_add_notifier(C, NC_GPENCIL | ND_DATA | NA_SELECTED, gpd);
-  }
-}
-
-static void tree_element_posegroup_activate(bContext *C, TreeElement *te, TreeStoreElem *tselem)
-{
-  Object *ob = (Object *)tselem->id;
-  if (ob->pose) {
-    ob->pose->active_group = te->index + 1;
-    WM_event_add_notifier(C, NC_OBJECT | ND_DRAW, ob);
-  }
-}
-
-static void tree_element_posechannel_activate(bContext *C,
-                                              ViewLayer *view_layer,
-                                              TreeElement *te,
-                                              TreeStoreElem *tselem,
-                                              const eOLSetState set,
-                                              bool recursive)
-{
-  Object *ob = (Object *)tselem->id;
-  bArmature *arm = ob->data;
-  bPoseChannel *pchan = te->directdata;
-
-  if (!(pchan->bone->flag & BONE_HIDDEN_P)) {
-    if (set != OL_SETSEL_EXTEND) {
-      /* Single select forces all other bones to get unselected. */
-      uint objects_len = 0;
-      Object **objects = BKE_object_pose_array_get_unique(view_layer, NULL, &objects_len);
-
-      for (uint object_index = 0; object_index < objects_len; object_index++) {
-        Object *ob_iter = BKE_object_pose_armature_get(objects[object_index]);
-
-        /* Sanity checks. */
-        if (ELEM(NULL, ob_iter, ob_iter->pose, ob_iter->data)) {
-          continue;
-        }
-
-        bPoseChannel *pchannel;
-        for (pchannel = ob_iter->pose->chanbase.first; pchannel; pchannel = pchannel->next) {
-          pchannel->bone->flag &= ~(BONE_TIPSEL | BONE_SELECTED | BONE_ROOTSEL);
-        }
-
-        if (ob != ob_iter) {
-          DEG_id_tag_update(ob_iter->data, ID_RECALC_SELECT);
-        }
-      }
-      MEM_freeN(objects);
-    }
-
-    if ((set == OL_SETSEL_EXTEND) && (pchan->bone->flag & BONE_SELECTED)) {
-      pchan->bone->flag &= ~BONE_SELECTED;
-    }
-    else {
-      pchan->bone->flag |= BONE_SELECTED;
-      arm->act_bone = pchan->bone;
-    }
-
-    if (recursive) {
-      /* Recursive select/deselect */
-      do_outliner_bone_select_recursive(
-          arm, pchan->bone, (pchan->bone->flag & BONE_SELECTED) != 0);
-    }
-
-    WM_event_add_notifier(C, NC_OBJECT | ND_BONE_ACTIVE, ob);
-    DEG_id_tag_update(&arm->id, ID_RECALC_SELECT);
-  }
-}
-
-static void tree_element_bone_activate(bContext *C,
-                                       ViewLayer *view_layer,
-                                       TreeElement *te,
-                                       TreeStoreElem *tselem,
-                                       const eOLSetState set,
-                                       bool recursive)
-{
-  bArmature *arm = (bArmature *)tselem->id;
-  Bone *bone = te->directdata;
-
-  if (!(bone->flag & BONE_HIDDEN_P)) {
-    Object *ob = OBACT(view_layer);
-    if (ob) {
-      if (set != OL_SETSEL_EXTEND) {
-        /* single select forces all other bones to get unselected */
-        for (Bone *bone_iter = arm->bonebase.first; bone_iter != NULL;
-             bone_iter = bone_iter->next) {
-          bone_iter->flag &= ~(BONE_TIPSEL | BONE_SELECTED | BONE_ROOTSEL);
-          do_outliner_bone_select_recursive(arm, bone_iter, false);
-        }
-      }
-    }
-
-    if (set == OL_SETSEL_EXTEND && (bone->flag & BONE_SELECTED)) {
-      bone->flag &= ~BONE_SELECTED;
-    }
-    else {
-      bone->flag |= BONE_SELECTED;
-      arm->act_bone = bone;
-    }
-
-    if (recursive) {
-      /* Recursive select/deselect */
-      do_outliner_bone_select_recursive(arm, bone, (bone->flag & BONE_SELECTED) != 0);
-    }
-
-    WM_event_add_notifier(C, NC_OBJECT | ND_BONE_ACTIVE, ob);
-  }
-}
-
-/** Edit-bones only draw in edit-mode armature. */
-static void tree_element_active_ebone__sel(bContext *C, bArmature *arm, EditBone *ebone, short sel)
-{
-  if (sel) {
-    arm->act_edbone = ebone;
-  }
-  ED_armature_ebone_select_set(ebone, sel);
-  WM_event_add_notifier(C, NC_OBJECT | ND_BONE_ACTIVE, CTX_data_edit_object(C));
-}
-static void tree_element_ebone_activate(bContext *C,
-                                        ViewLayer *view_layer,
-                                        TreeElement *te,
-                                        TreeStoreElem *tselem,
-                                        const eOLSetState set,
-                                        bool recursive)
-{
-  bArmature *arm = (bArmature *)tselem->id;
-  EditBone *ebone = te->directdata;
-
-  if (set == OL_SETSEL_NORMAL) {
-    if (!(ebone->flag & BONE_HIDDEN_A)) {
-      uint bases_len = 0;
-      Base **bases = BKE_view_layer_array_from_bases_in_edit_mode_unique_data(
-          view_layer, NULL, &bases_len);
-      ED_armature_edit_deselect_all_multi_ex(bases, bases_len);
-      MEM_freeN(bases);
-
-      tree_element_active_ebone__sel(C, arm, ebone, true);
-    }
-  }
-  else if (set == OL_SETSEL_EXTEND) {
-    if (!(ebone->flag & BONE_HIDDEN_A)) {
-      if (!(ebone->flag & BONE_SELECTED)) {
-        tree_element_active_ebone__sel(C, arm, ebone, true);
-      }
-      else {
-        /* entirely selected, so de-select */
-        tree_element_active_ebone__sel(C, arm, ebone, false);
-      }
-    }
-  }
-
-  if (recursive) {
-    /* Recursive select/deselect */
-    do_outliner_ebone_select_recursive(arm, ebone, (ebone->flag & BONE_SELECTED) != 0);
-  }
-}
-
-static void tree_element_modifier_activate(bContext *C,
-                                           TreeElement *te,
-                                           TreeStoreElem *tselem,
-                                           const eOLSetState set)
-{
-  Object *ob = (Object *)tselem->id;
-  ModifierData *md = (ModifierData *)te->directdata;
-
-  if (set == OL_SETSEL_NORMAL) {
-    BKE_object_modifier_set_active(ob, md);
-    WM_event_add_notifier(C, NC_OBJECT | ND_MODIFIER, ob);
-  }
-}
-
-static void tree_element_psys_activate(bContext *C, TreeStoreElem *tselem)
-{
-  Object *ob = (Object *)tselem->id;
-
-  WM_event_add_notifier(C, NC_OBJECT | ND_PARTICLE | NA_EDITED, ob);
-}
-
-static void tree_element_constraint_activate(bContext *C,
-                                             ViewLayer *view_layer,
-                                             TreeElement *te,
-                                             TreeStoreElem *tselem,
-                                             const eOLSetState set)
-{
-  Object *ob = (Object *)tselem->id;
-
-  /* Activate the parent bone if this is a bone constraint. */
-  te = te->parent;
-  while (te) {
-    tselem = TREESTORE(te);
-    if (tselem->type == TSE_POSE_CHANNEL) {
-      tree_element_posechannel_activate(C, view_layer, te, tselem, set, false);
-      return;
-    }
-    te = te->parent;
-  }
-
-  WM_event_add_notifier(C, NC_OBJECT | ND_CONSTRAINT, ob);
-}
-
-static void tree_element_sequence_activate(bContext *C,
-                                           Scene *scene,
-                                           TreeElement *te,
-                                           const eOLSetState set)
-{
-  Sequence *seq = (Sequence *)te->directdata;
-  Editing *ed = SEQ_editing_get(scene);
-
-  if (BLI_findindex(ed->seqbasep, seq) != -1) {
-    if (set == OL_SETSEL_EXTEND) {
-      SEQ_select_active_set(scene, NULL);
-    }
-    ED_sequencer_deselect_all(scene);
-
-    if ((set == OL_SETSEL_EXTEND) && seq->flag & SELECT) {
-      seq->flag &= ~SELECT;
-    }
-    else {
-      seq->flag |= SELECT;
-      SEQ_select_active_set(scene, seq);
-    }
-  }
-
-  WM_event_add_notifier(C, NC_SCENE | ND_SEQUENCER | NA_SELECTED, scene);
-}
-
-static void tree_element_sequence_dup_activate(Scene *scene, TreeElement *UNUSED(te))
-{
-  Editing *ed = SEQ_editing_get(scene);
-
-#if 0
-  select_single_seq(seq, 1);
-#endif
-  Sequence *p = ed->seqbasep->first;
-  while (p) {
-    if ((!p->strip) || (!p->strip->stripdata) || (p->strip->stripdata->name[0] == '\0')) {
-      p = p->next;
-      continue;
-    }
-
-#if 0
-    if (STREQ(p->strip->stripdata->name, seq->strip->stripdata->name)) {
-      select_single_seq(p, 0);
-    }
-#endif
-    p = p->next;
-  }
-}
-
-static void tree_element_master_collection_activate(const bContext *C)
-{
-  ViewLayer *view_layer = CTX_data_view_layer(C);
-  LayerCollection *layer_collection = view_layer->layer_collections.first;
-  BKE_layer_collection_activate(view_layer, layer_collection);
-  /* A very precise notifier - ND_LAYER alone is quite vague, we want to avoid unnecessary work
-   * when only the active collection changes. */
-  WM_main_add_notifier(NC_SCENE | ND_LAYER | NS_LAYER_COLLECTION | NA_ACTIVATED, NULL);
-}
-
-static void tree_element_layer_collection_activate(bContext *C, TreeElement *te)
-{
-  Scene *scene = CTX_data_scene(C);
-  LayerCollection *layer_collection = te->directdata;
-  ViewLayer *view_layer = BKE_view_layer_find_from_collection(scene, layer_collection);
-  BKE_layer_collection_activate(view_layer, layer_collection);
-  /* A very precise notifier - ND_LAYER alone is quite vague, we want to avoid unnecessary work
-   * when only the active collection changes. */
-  WM_main_add_notifier(NC_SCENE | ND_LAYER | NS_LAYER_COLLECTION | NA_ACTIVATED, NULL);
-}
-
-static void tree_element_text_activate(bContext *C, TreeElement *te)
-{
-  Text *text = (Text *)te->store_elem->id;
-  ED_text_activate_in_screen(C, text);
-}
-
-/* ---------------------------------------------- */
-
-void tree_element_activate(bContext *C,
-                           const TreeViewContext *tvc,
-                           TreeElement *te,
-                           const eOLSetState set,
-                           const bool handle_all_types)
-{
-  switch (te->idcode) {
-    /** \note #ID_OB only if handle_all_type is true,
-     * else objects are handled specially to allow multiple selection.
-     * See #do_outliner_item_activate. */
-    case ID_OB:
-      if (handle_all_types) {
-        tree_element_object_activate(C, tvc->scene, tvc->view_layer, te, set, false);
-      }
-      break;
-    case ID_MA:
-      tree_element_material_activate(C, tvc->view_layer, te);
-      break;
-    case ID_WO:
-      tree_element_world_activate(C, tvc->scene, te);
-      break;
-    case ID_CA:
-      tree_element_camera_activate(C, tvc->scene, te);
-      break;
-    case ID_TXT:
-      tree_element_text_activate(C, te);
-      break;
-  }
-}
-
-void tree_element_type_active_set(bContext *C,
-                                  const TreeViewContext *tvc,
-                                  TreeElement *te,
-                                  TreeStoreElem *tselem,
-                                  const eOLSetState set,
-                                  bool recursive)
-{
-  BLI_assert(set != OL_SETSEL_NONE);
-  switch (tselem->type) {
-    case TSE_DEFGROUP:
-      tree_element_defgroup_activate(C, te, tselem);
-      break;
-    case TSE_BONE:
-      tree_element_bone_activate(C, tvc->view_layer, te, tselem, set, recursive);
-      break;
-    case TSE_EBONE:
-      tree_element_ebone_activate(C, tvc->view_layer, te, tselem, set, recursive);
-      break;
-    case TSE_MODIFIER:
-      tree_element_modifier_activate(C, te, tselem, set);
-      break;
-    case TSE_LINKED_OB:
-      tree_element_object_activate(C, tvc->scene, tvc->view_layer, te, set, false);
-      break;
-    case TSE_LINKED_PSYS:
-      tree_element_psys_activate(C, tselem);
-      break;
-    case TSE_POSE_BASE:
-      return;
-    case TSE_POSE_CHANNEL:
-      tree_element_posechannel_activate(C, tvc->view_layer, te, tselem, set, recursive);
-      break;
-    case TSE_CONSTRAINT_BASE:
-    case TSE_CONSTRAINT:
-      tree_element_constraint_activate(C, tvc->view_layer, te, tselem, set);
-      break;
-    case TSE_R_LAYER:
-      tree_element_viewlayer_activate(C, te);
-      break;
-    case TSE_POSEGRP:
-      tree_element_posegroup_activate(C, te, tselem);
-      break;
-    case TSE_SEQUENCE:
-      tree_element_sequence_activate(C, tvc->scene, te, set);
-      break;
-    case TSE_SEQUENCE_DUP:
-      tree_element_sequence_dup_activate(tvc->scene, te);
-      break;
-    case TSE_GP_LAYER:
-      tree_element_gplayer_activate(C, te, tselem);
-      break;
-    case TSE_VIEW_COLLECTION_BASE:
-      tree_element_master_collection_activate(C);
-      break;
-    case TSE_LAYER_COLLECTION:
-      tree_element_layer_collection_activate(C, te);
-      break;
-  }
-}
-
-static eOLDrawState tree_element_defgroup_state_get(const ViewLayer *view_layer,
-                                                    const TreeElement *te,
-                                                    const TreeStoreElem *tselem)
-{
-  const Object *ob = (const Object *)tselem->id;
-  if (ob == OBACT(view_layer)) {
-    if (BKE_object_defgroup_active_index_get(ob) == te->index + 1) {
-      return OL_DRAWSEL_NORMAL;
-    }
-  }
-  return OL_DRAWSEL_NONE;
-}
-
-static eOLDrawState tree_element_bone_state_get(const ViewLayer *view_layer,
-                                                const TreeElement *te,
-                                                const TreeStoreElem *tselem)
-{
-  const bArmature *arm = (const bArmature *)tselem->id;
-  const Bone *bone = te->directdata;
-  const Object *ob = OBACT(view_layer);
-  if (ob && ob->data == arm) {
-    if (bone->flag & BONE_SELECTED) {
-      return OL_DRAWSEL_NORMAL;
-    }
-  }
-  return OL_DRAWSEL_NONE;
-}
-
-static eOLDrawState tree_element_ebone_state_get(const TreeElement *te)
-{
-  const EditBone *ebone = te->directdata;
-  if (ebone->flag & BONE_SELECTED) {
-    return OL_DRAWSEL_NORMAL;
-  }
-  return OL_DRAWSEL_NONE;
-}
-
-static eOLDrawState tree_element_modifier_state_get(const TreeElement *te,
-                                                    const TreeStoreElem *tselem)
-{
-  const Object *ob = (const Object *)tselem->id;
-  const ModifierData *md = (const ModifierData *)te->directdata;
-
-  return (BKE_object_active_modifier(ob) == md) ? OL_DRAWSEL_NORMAL : OL_DRAWSEL_NONE;
-}
-
-static eOLDrawState tree_element_object_state_get(const TreeViewContext *tvc,
-                                                  const TreeStoreElem *tselem)
-{
-  return (tselem->id == (const ID *)tvc->obact) ? OL_DRAWSEL_NORMAL : OL_DRAWSEL_NONE;
-}
-
-static eOLDrawState tree_element_pose_state_get(const ViewLayer *view_layer,
-                                                const TreeStoreElem *tselem)
-{
-  const Object *ob = (const Object *)tselem->id;
-  /* This will just lookup in a cache, it will not change the arguments. */
-  const Base *base = BKE_view_layer_base_find((ViewLayer *)view_layer, (Object *)ob);
-  if (base == NULL) {
-    /* Armature not instantiated in current scene (e.g. inside an appended group). */
-    return OL_DRAWSEL_NONE;
-  }
-
-  if (ob->mode & OB_MODE_POSE) {
-    return OL_DRAWSEL_NORMAL;
-  }
-  return OL_DRAWSEL_NONE;
-}
-
-static eOLDrawState tree_element_posechannel_state_get(const Object *ob_pose,
-                                                       const TreeElement *te,
-                                                       const TreeStoreElem *tselem)
-{
-  const Object *ob = (const Object *)tselem->id;
-  const bPoseChannel *pchan = te->directdata;
-  if (ob == ob_pose && ob->pose) {
-    if (pchan->bone->flag & BONE_SELECTED) {
-      return OL_DRAWSEL_NORMAL;
-    }
-  }
-  return OL_DRAWSEL_NONE;
-}
-
-static eOLDrawState tree_element_viewlayer_state_get(const bContext *C, const TreeElement *te)
-{
-  /* paranoia check */
-  if (te->idcode != ID_SCE) {
-    return OL_DRAWSEL_NONE;
-  }
-
-  const ViewLayer *view_layer = te->directdata;
-
-  if (CTX_data_view_layer(C) == view_layer) {
-    return OL_DRAWSEL_NORMAL;
-  }
-  return OL_DRAWSEL_NONE;
-}
-
-static eOLDrawState tree_element_posegroup_state_get(const ViewLayer *view_layer,
-                                                     const TreeElement *te,
-                                                     const TreeStoreElem *tselem)
-{
-  const Object *ob = (const Object *)tselem->id;
-
-  if (ob == OBACT(view_layer) && ob->pose) {
-    if (ob->pose->active_group == te->index + 1) {
-      return OL_DRAWSEL_NORMAL;
-    }
-  }
-  return OL_DRAWSEL_NONE;
-}
-
-static eOLDrawState tree_element_sequence_state_get(const Scene *scene, const TreeElement *te)
-{
-  const Sequence *seq = (const Sequence *)te->directdata;
-  const Editing *ed = scene->ed;
-
-  if (ed && ed->act_seq == seq && seq->flag & SELECT) {
-    return OL_DRAWSEL_NORMAL;
-  }
-  return OL_DRAWSEL_NONE;
-}
-
-static eOLDrawState tree_element_sequence_dup_state_get(const TreeElement *te)
-{
-  const Sequence *seq = (const Sequence *)te->directdata;
-  if (seq->flag & SELECT) {
-    return OL_DRAWSEL_NORMAL;
-  }
-  return OL_DRAWSEL_NONE;
-}
-
-static eOLDrawState tree_element_gplayer_state_get(const TreeElement *te)
-{
-  if (((const bGPDlayer *)te->directdata)->flag & GP_LAYER_ACTIVE) {
-    return OL_DRAWSEL_NORMAL;
-  }
-  return OL_DRAWSEL_NONE;
-}
-
-static eOLDrawState tree_element_master_collection_state_get(const bContext *C)
-{
-  const ViewLayer *view_layer = CTX_data_view_layer(C);
-  const LayerCollection *active = CTX_data_layer_collection(C);
-
-  if (active == view_layer->layer_collections.first) {
-    return OL_DRAWSEL_NORMAL;
-  }
-  return OL_DRAWSEL_NONE;
-}
-
-static eOLDrawState tree_element_layer_collection_state_get(const bContext *C,
-                                                            const TreeElement *te)
-{
-  const LayerCollection *active = CTX_data_layer_collection(C);
-  if (active == te->directdata) {
-    return OL_DRAWSEL_NORMAL;
-  }
-  return OL_DRAWSEL_NONE;
-}
-
-static eOLDrawState tree_element_active_material_get(const ViewLayer *view_layer,
-                                                     const TreeElement *te)
-{
-  /* we search for the object parent */
-  const Object *ob = (const Object *)outliner_search_back((TreeElement *)te, ID_OB);
-  /* Note : ob->matbits can be NULL when a local object points to a library mesh. */
-  if (ob == NULL || ob != OBACT(view_layer) || ob->matbits == NULL) {
-    return OL_DRAWSEL_NONE; /* just paranoia */
-  }
-
-  /* searching in ob mat array? */
-  const TreeElement *tes = te->parent;
-  if (tes->idcode == ID_OB) {
-    if (ob->actcol == te->index + 1) {
-      if (ob->matbits[te->index]) {
-        return OL_DRAWSEL_NORMAL;
-      }
-    }
-  }
-  /* or we search for obdata material */
-  else {
-    if (ob->actcol == te->index + 1) {
-      if (ob->matbits[te->index] == 0) {
-        return OL_DRAWSEL_NORMAL;
-      }
-    }
-  }
-  return OL_DRAWSEL_NONE;
-}
-
-static eOLDrawState tree_element_active_scene_get(const TreeViewContext *tvc,
-                                                  const TreeElement *te,
-                                                  const TreeStoreElem *tselem)
-{
-  if (te->idcode == ID_SCE) {
-    if (tselem->id == (ID *)tvc->scene) {
-      return OL_DRAWSEL_NORMAL;
-    }
-  }
-  return OL_DRAWSEL_NONE;
-}
-
-static eOLDrawState tree_element_active_world_get(const Scene *scene, const TreeElement *te)
-{
-  const TreeElement *tep = te->parent;
-  if (tep == NULL) {
-    return OL_DRAWSEL_NORMAL;
-  }
-
-  const TreeStoreElem *tselem = TREESTORE(tep);
-  if (tselem->id == (const ID *)scene) {
-    return OL_DRAWSEL_NORMAL;
-  }
-  return OL_DRAWSEL_NONE;
-}
-
-static eOLDrawState tree_element_active_camera_get(const Scene *scene, const TreeElement *te)
-{
-  const Object *ob = (const Object *)outliner_search_back((TreeElement *)te, ID_OB);
-
-  return (scene->camera == ob) ? OL_DRAWSEL_NORMAL : OL_DRAWSEL_NONE;
-}
-
-eOLDrawState tree_element_active_state_get(const TreeViewContext *tvc,
-                                           const TreeElement *te,
-                                           const TreeStoreElem *tselem)
-{
-  switch (te->idcode) {
-    case ID_SCE:
-      return tree_element_active_scene_get(tvc, te, tselem);
-    case ID_OB:
-      /* Objects are currently handled by the caller in order to also change text color. */
-      return OL_DRAWSEL_NONE;
-      break;
-    case ID_MA:
-      return tree_element_active_material_get(tvc->view_layer, te);
-    case ID_WO:
-      return tree_element_active_world_get(tvc->scene, te);
-    case ID_CA:
-      return tree_element_active_camera_get(tvc->scene, te);
-  }
-  return OL_DRAWSEL_NONE;
-}
-
-eOLDrawState tree_element_type_active_state_get(const bContext *C,
-                                                const TreeViewContext *tvc,
-                                                const TreeElement *te,
-                                                const TreeStoreElem *tselem)
-{
-  switch (tselem->type) {
-    case TSE_DEFGROUP:
-      return tree_element_defgroup_state_get(tvc->view_layer, te, tselem);
-    case TSE_BONE:
-      return tree_element_bone_state_get(tvc->view_layer, te, tselem);
-    case TSE_EBONE:
-      return tree_element_ebone_state_get(te);
-    case TSE_MODIFIER:
-      return tree_element_modifier_state_get(te, tselem);
-    case TSE_LINKED_OB:
-      return tree_element_object_state_get(tvc, tselem);
-    case TSE_LINKED_PSYS:
-      return OL_DRAWSEL_NONE;
-    case TSE_POSE_BASE:
-      return tree_element_pose_state_get(tvc->view_layer, tselem);
-    case TSE_POSE_CHANNEL:
-      return tree_element_posechannel_state_get(tvc->ob_pose, te, tselem);
-    case TSE_CONSTRAINT_BASE:
-    case TSE_CONSTRAINT:
-      return OL_DRAWSEL_NONE;
-    case TSE_R_LAYER:
-      return tree_element_viewlayer_state_get(C, te);
-    case TSE_POSEGRP:
-      return tree_element_posegroup_state_get(tvc->view_layer, te, tselem);
-    case TSE_SEQUENCE:
-      return tree_element_sequence_state_get(tvc->scene, te);
-    case TSE_SEQUENCE_DUP:
-      return tree_element_sequence_dup_state_get(te);
-    case TSE_GP_LAYER:
-      return tree_element_gplayer_state_get(te);
-    case TSE_VIEW_COLLECTION_BASE:
-      return tree_element_master_collection_state_get(C);
-    case TSE_LAYER_COLLECTION:
-      return tree_element_layer_collection_state_get(C, te);
-  }
-  return OL_DRAWSEL_NONE;
-}
-
-bPoseChannel *outliner_find_parent_bone(TreeElement *te, TreeElement **r_bone_te)
-{
-  TreeStoreElem *tselem;
-
-  te = te->parent;
-  while (te) {
-    tselem = TREESTORE(te);
-    if (tselem->type == TSE_POSE_CHANNEL) {
-      *r_bone_te = te;
-      return (bPoseChannel *)te->directdata;
-    }
-    te = te->parent;
-  }
-
-  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};
-  int context = 0;
-
-  /* ID Types */
-  if (tselem->type == TSE_SOME_ID) {
-    RNA_id_pointer_create(tselem->id, &ptr);
-
-    switch (te->idcode) {
-      case ID_SCE:
-        context = BCONTEXT_SCENE;
-        break;
-      case ID_OB:
-        context = BCONTEXT_OBJECT;
-        break;
-      case ID_ME:
-      case ID_CU:
-      case ID_MB:
-      case ID_IM:
-      case ID_LT:
-      case ID_LA:
-      case ID_CA:
-      case ID_KE:
-      case ID_SPK:
-      case ID_AR:
-      case ID_GD:
-      case ID_LP:
-      case ID_HA:
-      case ID_PT:
-      case ID_VO:
-        context = BCONTEXT_DATA;
-        break;
-      case ID_MA:
-        context = BCONTEXT_MATERIAL;
-        break;
-      case ID_WO:
-        context = BCONTEXT_WORLD;
-        break;
-    }
-  }
-  else {
-    switch (tselem->type) {
-      case TSE_DEFGROUP_BASE:
-      case TSE_DEFGROUP:
-        RNA_id_pointer_create(tselem->id, &ptr);
-        context = BCONTEXT_DATA;
-        break;
-      case TSE_CONSTRAINT_BASE:
-      case TSE_CONSTRAINT: {
-        TreeElement *bone_te = NULL;
-        bPoseChannel *pchan = outliner_find_parent_bone(te, &bone_te);
-
-        if (pchan) {
-          RNA_pointer_create(TREESTORE(bone_te)->id, &RNA_PoseBone, pchan, &ptr);
-          context = BCONTEXT_BONE_CONSTRAINT;
-        }
-        else {
-          RNA_id_pointer_create(tselem->id, &ptr);
-          context = BCONTEXT_CONSTRAINT;
-        }
-
-        /* Expand the selected constraint in the properties editor. */
-        if (tselem->type != TSE_CONSTRAINT_BASE) {
-          BKE_constraint_panel_expand(te->directdata);
-        }
-        break;
-      }
-      case TSE_MODIFIER_BASE:
-      case TSE_MODIFIER:
-        RNA_id_pointer_create(tselem->id, &ptr);
-        context = BCONTEXT_MODIFIER;
-
-        if (tselem->type != TSE_MODIFIER_BASE) {
-          Object *ob = (Object *)tselem->id;
-
-          if (ob->type == OB_GPENCIL) {
-            BKE_gpencil_modifier_panel_expand(te->directdata);
-          }
-          else {
-            ModifierData *md = (ModifierData *)te->directdata;
-
-            switch ((ModifierType)md->type) {
-              case eModifierType_ParticleSystem:
-                context = BCONTEXT_PARTICLE;
-                break;
-              case eModifierType_Cloth:
-              case eModifierType_Softbody:
-              case eModifierType_Collision:
-              case eModifierType_Fluidsim:
-              case eModifierType_DynamicPaint:
-              case eModifierType_Fluid:
-                context = BCONTEXT_PHYSICS;
-                break;
-              default:
-                break;
-            }
-
-            if (context == BCONTEXT_MODIFIER) {
-              BKE_modifier_panel_expand(md);
-            }
-          }
-        }
-        break;
-      case TSE_GPENCIL_EFFECT_BASE:
-      case TSE_GPENCIL_EFFECT:
-        RNA_id_pointer_create(tselem->id, &ptr);
-        context = BCONTEXT_SHADERFX;
-
-        if (tselem->type != TSE_GPENCIL_EFFECT_BASE) {
-          BKE_shaderfx_panel_expand(te->directdata);
-        }
-        break;
-      case TSE_BONE: {
-        bArmature *arm = (bArmature *)tselem->id;
-        Bone *bone = te->directdata;
-
-        RNA_pointer_create(&arm->id, &RNA_Bone, bone, &ptr);
-        context = BCONTEXT_BONE;
-        break;
-      }
-      case TSE_EBONE: {
-        bArmature *arm = (bArmature *)tselem->id;
-        EditBone *ebone = te->directdata;
-
-        RNA_pointer_create(&arm->id, &RNA_EditBone, ebone, &ptr);
-        context = BCONTEXT_BONE;
-        break;
-      }
-      case TSE_POSE_CHANNEL: {
-        Object *ob = (Object *)tselem->id;
-        bArmature *arm = ob->data;
-        bPoseChannel *pchan = te->directdata;
-
-        RNA_pointer_create(&arm->id, &RNA_PoseBone, pchan, &ptr);
-        context = BCONTEXT_BONE;
-        break;
-      }
-      case TSE_POSE_BASE: {
-        Object *ob = (Object *)tselem->id;
-        bArmature *arm = ob->data;
-
-        RNA_pointer_create(&arm->id, &RNA_Armature, arm, &ptr);
-        context = BCONTEXT_DATA;
-        break;
-      }
-      case TSE_R_LAYER_BASE:
-      case TSE_R_LAYER: {
-        ViewLayer *view_layer = te->directdata;
-
-        RNA_pointer_create(tselem->id, &RNA_ViewLayer, view_layer, &ptr);
-        context = BCONTEXT_VIEW_LAYER;
-        break;
-      }
-      case TSE_POSEGRP_BASE:
-      case TSE_POSEGRP: {
-        Object *ob = (Object *)tselem->id;
-        bArmature *arm = ob->data;
-
-        RNA_pointer_create(&arm->id, &RNA_Armature, arm, &ptr);
-        context = BCONTEXT_DATA;
-        break;
-      }
-      case TSE_LINKED_PSYS: {
-        Object *ob = (Object *)tselem->id;
-        ParticleSystem *psys = psys_get_current(ob);
-
-        RNA_pointer_create(&ob->id, &RNA_ParticleSystem, psys, &ptr);
-        context = BCONTEXT_PARTICLE;
-        break;
-      }
-      case TSE_GP_LAYER:
-        RNA_id_pointer_create(tselem->id, &ptr);
-        context = BCONTEXT_DATA;
-        break;
-    }
-  }
-
-  if (ptr.data) {
-    outliner_sync_to_properties_editors(C, &ptr, context);
-  }
-}
-
-/* ================================================ */
-
-/**
- * Action when clicking to activate an item (typically under the mouse cursor),
- * but don't do any cursor intersection checks.
- *
- * Needed to run from operators accessed from a menu.
- */
-static void do_outliner_item_activate_tree_element(bContext *C,
-                                                   const TreeViewContext *tvc,
-                                                   SpaceOutliner *space_outliner,
-                                                   TreeElement *te,
-                                                   TreeStoreElem *tselem,
-                                                   const bool extend,
-                                                   const bool recursive,
-                                                   const bool do_activate_data)
-{
-  /* Always makes active object, except for some specific types. */
-  if (ELEM(tselem->type,
-           TSE_SEQUENCE,
-           TSE_SEQ_STRIP,
-           TSE_SEQUENCE_DUP,
-           TSE_EBONE,
-           TSE_LAYER_COLLECTION)) {
-    /* Note about TSE_EBONE: In case of a same ID_AR datablock shared among several
-     * objects, we do not want to switch out of edit mode (see T48328 for details). */
-  }
-  else if (do_activate_data) {
-    tree_element_object_activate(C,
-                                 tvc->scene,
-                                 tvc->view_layer,
-                                 te,
-                                 (extend && tselem->type == TSE_SOME_ID) ? OL_SETSEL_EXTEND :
-                                                                           OL_SETSEL_NORMAL,
-                                 recursive && tselem->type == TSE_SOME_ID);
-  }
-
-  if (tselem->type == TSE_SOME_ID) { /* The lib blocks. */
-    if (do_activate_data == false) {
-      /* Only select in outliner. */
-    }
-    else if (te->idcode == ID_SCE) {
-      if (tvc->scene != (Scene *)tselem->id) {
-        WM_window_set_active_scene(CTX_data_main(C), C, CTX_wm_window(C), (Scene *)tselem->id);
-      }
-    }
-    else if ((te->idcode == ID_GR) && (space_outliner->outlinevis != SO_VIEW_LAYER)) {
-      Collection *gr = (Collection *)tselem->id;
-
-      if (extend) {
-        int sel = BA_SELECT;
-        FOREACH_COLLECTION_OBJECT_RECURSIVE_BEGIN (gr, object) {
-          Base *base = BKE_view_layer_base_find(tvc->view_layer, object);
-          if (base && (base->flag & BASE_SELECTED)) {
-            sel = BA_DESELECT;
-            break;
-          }
-        }
-        FOREACH_COLLECTION_OBJECT_RECURSIVE_END;
-
-        FOREACH_COLLECTION_OBJECT_RECURSIVE_BEGIN (gr, object) {
-          Base *base = BKE_view_layer_base_find(tvc->view_layer, object);
-          if (base) {
-            ED_object_base_select(base, sel);
-          }
-        }
-        FOREACH_COLLECTION_OBJECT_RECURSIVE_END;
-      }
-      else {
-        BKE_view_layer_base_deselect_all(tvc->view_layer);
-
-        FOREACH_COLLECTION_OBJECT_RECURSIVE_BEGIN (gr, object) {
-          Base *base = BKE_view_layer_base_find(tvc->view_layer, object);
-          /* Object may not be in this scene */
-          if (base != NULL) {
-            if ((base->flag & BASE_SELECTED) == 0) {
-              ED_object_base_select(base, BA_SELECT);
-            }
-          }
-        }
-        FOREACH_COLLECTION_OBJECT_RECURSIVE_END;
-      }
-
-      DEG_id_tag_update(&tvc->scene->id, ID_RECALC_SELECT);
-      WM_event_add_notifier(C, NC_SCENE | ND_OB_SELECT, tvc->scene);
-    }
-    else { /* Rest of types. */
-      tree_element_activate(C, tvc, te, OL_SETSEL_NORMAL, false);
-    }
-  }
-  else if (do_activate_data) {
-    tree_element_type_active_set(
-        C, tvc, te, tselem, extend ? OL_SETSEL_EXTEND : OL_SETSEL_NORMAL, recursive);
-  }
-}
-
-void outliner_item_select(bContext *C,
-                          SpaceOutliner *space_outliner,
-                          TreeElement *te,
-                          const short select_flag)
-{
-  TreeStoreElem *tselem = TREESTORE(te);
-  const bool activate = select_flag & OL_ITEM_ACTIVATE;
-  const bool extend = select_flag & OL_ITEM_EXTEND;
-  const bool activate_data = select_flag & OL_ITEM_SELECT_DATA;
-
-  /* Clear previous active when activating and clear selection when not extending selection */
-  const short clear_flag = (activate ? TSE_ACTIVE : 0) | (extend ? 0 : TSE_SELECTED);
-  if (clear_flag) {
-    outliner_flag_set(&space_outliner->tree, clear_flag, false);
-  }
-
-  if (select_flag & OL_ITEM_SELECT) {
-    tselem->flag |= TSE_SELECTED;
-  }
-  else {
-    tselem->flag &= ~TSE_SELECTED;
-  }
-
-  if (activate) {
-    TreeViewContext tvc;
-    outliner_viewcontext_init(C, &tvc);
-
-    tselem->flag |= TSE_ACTIVE;
-    do_outliner_item_activate_tree_element(C,
-                                           &tvc,
-                                           space_outliner,
-                                           te,
-                                           tselem,
-                                           extend,
-                                           select_flag & OL_ITEM_RECURSIVE,
-                                           activate_data || space_outliner->flag & SO_SYNC_SELECT);
-  }
-}
-
-static bool do_outliner_range_select_recursive(ListBase *lb,
-                                               TreeElement *active,
-                                               TreeElement *cursor,
-                                               bool selecting)
-{
-  LISTBASE_FOREACH (TreeElement *, te, lb) {
-    TreeStoreElem *tselem = TREESTORE(te);
-
-    if (selecting) {
-      tselem->flag |= TSE_SELECTED;
-    }
-
-    /* Set state for selection */
-    if (ELEM(te, active, cursor)) {
-      selecting = !selecting;
-    }
-
-    if (selecting) {
-      tselem->flag |= TSE_SELECTED;
-    }
-
-    /* Don't look inside closed elements */
-    if (!(tselem->flag & TSE_CLOSED)) {
-      selecting = do_outliner_range_select_recursive(&te->subtree, active, cursor, selecting);
-    }
-  }
-
-  return selecting;
-}
-
-/* Select a range of items between cursor and active element */
-static void do_outliner_range_select(bContext *C,
-                                     SpaceOutliner *space_outliner,
-                                     TreeElement *cursor,
-                                     const bool extend)
-{
-  TreeElement *active = outliner_find_element_with_flag(&space_outliner->tree, TSE_ACTIVE);
-
-  /* If no active element exists, activate the element under the cursor */
-  if (!active) {
-    outliner_item_select(C, space_outliner, cursor, OL_ITEM_SELECT | OL_ITEM_ACTIVATE);
-    return;
-  }
-
-  TreeStoreElem *tselem = TREESTORE(active);
-  const bool active_selected = (tselem->flag & TSE_SELECTED);
-
-  if (!extend) {
-    outliner_flag_set(&space_outliner->tree, TSE_SELECTED, false);
-  }
-
-  /* Select active if under cursor */
-  if (active == cursor) {
-    outliner_item_select(C, space_outliner, cursor, OL_ITEM_SELECT);
-    return;
-  }
-
-  /* If active is not selected or visible, select and activate the element under the cursor */
-  if (!active_selected || !outliner_is_element_visible(active)) {
-    outliner_item_select(C, space_outliner, cursor, OL_ITEM_SELECT | OL_ITEM_ACTIVATE);
-    return;
-  }
-
-  do_outliner_range_select_recursive(&space_outliner->tree, active, cursor, false);
-}
-
-static bool outliner_is_co_within_restrict_columns(const SpaceOutliner *space_outliner,
-                                                   const ARegion *region,
-                                                   float view_co_x)
-{
-  return (view_co_x > region->v2d.cur.xmax - outliner_restrict_columns_width(space_outliner));
-}
-
-bool outliner_is_co_within_mode_column(SpaceOutliner *space_outliner, const float view_mval[2])
-{
-  /* Mode toggles only show in View Layer and Scenes modes. */
-  if (!ELEM(space_outliner->outlinevis, SO_VIEW_LAYER, SO_SCENES)) {
-    return false;
-  }
-
-  return space_outliner->flag & SO_MODE_COLUMN && view_mval[0] < UI_UNIT_X;
-}
-
-static bool outliner_is_co_within_active_mode_column(bContext *C,
-                                                     SpaceOutliner *space_outliner,
-                                                     const float view_mval[2])
-{
-  ViewLayer *view_layer = CTX_data_view_layer(C);
-  Object *obact = OBACT(view_layer);
-
-  return outliner_is_co_within_mode_column(space_outliner, view_mval) && obact &&
-         obact->mode != OB_MODE_OBJECT;
-}
-
-/**
- * Action to run when clicking in the outliner,
- *
- * May expend/collapse branches or activate items.
- */
-static int outliner_item_do_activate_from_cursor(bContext *C,
-                                                 const int mval[2],
-                                                 const bool extend,
-                                                 const bool use_range,
-                                                 const bool deselect_all)
-{
-  ARegion *region = CTX_wm_region(C);
-  SpaceOutliner *space_outliner = CTX_wm_space_outliner(C);
-  TreeElement *te;
-  float view_mval[2];
-  bool changed = false, rebuild_tree = false;
-
-  UI_view2d_region_to_view(&region->v2d, mval[0], mval[1], &view_mval[0], &view_mval[1]);
-
-  if (outliner_is_co_within_restrict_columns(space_outliner, region, view_mval[0])) {
-    return OPERATOR_CANCELLED;
-  }
-  if (outliner_is_co_within_active_mode_column(C, space_outliner, view_mval)) {
-    return OPERATOR_CANCELLED;
-  }
-
-  if (!(te = outliner_find_item_at_y(space_outliner, &space_outliner->tree, view_mval[1]))) {
-    if (deselect_all) {
-      outliner_flag_set(&space_outliner->tree, TSE_SELECTED, false);
-      changed = true;
-    }
-  }
-  /* Don't allow toggle on scene collection */
-  else if ((TREESTORE(te)->type != TSE_VIEW_COLLECTION_BASE) &&
-           outliner_item_is_co_within_close_toggle(te, view_mval[0])) {
-    return OPERATOR_CANCELLED | OPERATOR_PASS_THROUGH;
-  }
-  else {
-    /* The row may also contain children, if one is hovered we want this instead of current te. */
-    bool merged_elements = false;
-    bool is_over_icon = false;
-    TreeElement *activate_te = outliner_find_item_at_x_in_row(
-        space_outliner, te, view_mval[0], &merged_elements, &is_over_icon);
-
-    /* If the selected icon was an aggregate of multiple elements, run the search popup */
-    if (merged_elements) {
-      merged_element_search_menu_invoke(C, te, activate_te);
-      return OPERATOR_CANCELLED;
-    }
-
-    TreeStoreElem *activate_tselem = TREESTORE(activate_te);
-
-    if (use_range) {
-      do_outliner_range_select(C, space_outliner, activate_te, extend);
-    }
-    else {
-      const bool is_over_name_icons = outliner_item_is_co_over_name_icons(activate_te,
-                                                                          view_mval[0]);
-      /* Always select unless already active and selected */
-      const bool select = !extend || !(activate_tselem->flag & TSE_ACTIVE &&
-                                       activate_tselem->flag & TSE_SELECTED);
-
-      const short select_flag = OL_ITEM_ACTIVATE | (select ? OL_ITEM_SELECT : OL_ITEM_DESELECT) |
-                                (is_over_name_icons ? OL_ITEM_SELECT_DATA : 0) |
-                                (extend ? OL_ITEM_EXTEND : 0);
-
-      outliner_item_select(C, space_outliner, activate_te, select_flag);
-
-      /* Only switch properties editor tabs when icons are selected. */
-      if (is_over_icon) {
-        outliner_set_properties_tab(C, activate_te, activate_tselem);
-      }
-    }
-
-    changed = true;
-  }
-
-  if (changed) {
-    if (rebuild_tree) {
-      ED_region_tag_redraw(region);
-    }
-    else {
-      ED_region_tag_redraw_no_rebuild(region);
-    }
-
-    ED_outliner_select_sync_from_outliner(C, space_outliner);
-  }
-
-  return OPERATOR_FINISHED;
-}
-
-/* Event can enter-key, then it opens/closes. */
-static int outliner_item_activate_invoke(bContext *C, wmOperator *op, const wmEvent *event)
-{
-  const bool extend = RNA_boolean_get(op->ptr, "extend");
-  const bool use_range = RNA_boolean_get(op->ptr, "extend_range");
-  const bool deselect_all = RNA_boolean_get(op->ptr, "deselect_all");
-  return outliner_item_do_activate_from_cursor(C, event->mval, extend, use_range, deselect_all);
-}
-
-void OUTLINER_OT_item_activate(wmOperatorType *ot)
-{
-  ot->name = "Select";
-  ot->idname = "OUTLINER_OT_item_activate";
-  ot->description = "Handle mouse clicks to select and activate items";
-
-  ot->invoke = outliner_item_activate_invoke;
-
-  ot->poll = ED_operator_outliner_active;
-
-  ot->flag |= OPTYPE_REGISTER | OPTYPE_UNDO;
-
-  PropertyRNA *prop;
-  prop = RNA_def_boolean(ot->srna, "extend", false, "Extend", "Extend selection for activation");
-  RNA_def_property_flag(prop, PROP_SKIP_SAVE);
-  prop = RNA_def_boolean(
-      ot->srna, "extend_range", false, "Extend Range", "Select a range from active element");
-  RNA_def_property_flag(prop, PROP_SKIP_SAVE);
-
-  prop = RNA_def_boolean(ot->srna,
-                         "deselect_all",
-                         false,
-                         "Deselect On Nothing",
-                         "Deselect all when nothing under the cursor");
-  RNA_def_property_flag(prop, PROP_SKIP_SAVE);
-}
-
-/* ****************************************************** */
-
-/* **************** Box Select Tool ****************** */
-static void outliner_item_box_select(bContext *C,
-                                     SpaceOutliner *space_outliner,
-                                     Scene *scene,
-                                     rctf *rectf,
-                                     TreeElement *te,
-                                     bool select)
-{
-  TreeStoreElem *tselem = TREESTORE(te);
-
-  if (te->ys <= rectf->ymax && te->ys + UI_UNIT_Y >= rectf->ymin) {
-    outliner_item_select(
-        C, space_outliner, te, (select ? OL_ITEM_SELECT : OL_ITEM_DESELECT) | OL_ITEM_EXTEND);
-  }
-
-  /* Look at its children. */
-  if (TSELEM_OPEN(tselem, space_outliner)) {
-    LISTBASE_FOREACH (TreeElement *, te_sub, &te->subtree) {
-      outliner_item_box_select(C, space_outliner, scene, rectf, te_sub, select);
-    }
-  }
-}
-
-static int outliner_box_select_exec(bContext *C, wmOperator *op)
-{
-  Scene *scene = CTX_data_scene(C);
-  SpaceOutliner *space_outliner = CTX_wm_space_outliner(C);
-  ARegion *region = CTX_wm_region(C);
-  rctf rectf;
-
-  const eSelectOp sel_op = RNA_enum_get(op->ptr, "mode");
-  const bool select = (sel_op != SEL_OP_SUB);
-  if (SEL_OP_USE_PRE_DESELECT(sel_op)) {
-    outliner_flag_set(&space_outliner->tree, TSE_SELECTED, 0);
-  }
-
-  WM_operator_properties_border_to_rctf(op, &rectf);
-  UI_view2d_region_to_view_rctf(&region->v2d, &rectf, &rectf);
-
-  LISTBASE_FOREACH (TreeElement *, te, &space_outliner->tree) {
-    outliner_item_box_select(C, space_outliner, scene, &rectf, te, select);
-  }
-
-  DEG_id_tag_update(&scene->id, ID_RECALC_SELECT);
-  WM_event_add_notifier(C, NC_SCENE | ND_OB_SELECT, scene);
-  ED_region_tag_redraw_no_rebuild(region);
-
-  ED_outliner_select_sync_from_outliner(C, space_outliner);
-
-  return OPERATOR_FINISHED;
-}
-
-static int outliner_box_select_invoke(bContext *C, wmOperator *op, const wmEvent *event)
-{
-  SpaceOutliner *space_outliner = CTX_wm_space_outliner(C);
-  ARegion *region = CTX_wm_region(C);
-  float view_mval[2];
-  const bool tweak = RNA_boolean_get(op->ptr, "tweak");
-
-  UI_view2d_region_to_view(
-      &region->v2d, event->mval[0], event->mval[1], &view_mval[0], &view_mval[1]);
-
-  /* Find element clicked on */
-  TreeElement *te = outliner_find_item_at_y(space_outliner, &space_outliner->tree, view_mval[1]);
-
-  /* Pass through if click is over name or icons, or not tweak event */
-  if (te && tweak && outliner_item_is_co_over_name_icons(te, view_mval[0])) {
-    return OPERATOR_CANCELLED | OPERATOR_PASS_THROUGH;
-  }
-
-  if (outliner_is_co_within_active_mode_column(C, space_outliner, view_mval)) {
-    return OPERATOR_CANCELLED | OPERATOR_PASS_THROUGH;
-  }
-
-  return WM_gesture_box_invoke(C, op, event);
-}
-
-void OUTLINER_OT_select_box(wmOperatorType *ot)
-{
-  /* identifiers */
-  ot->name = "Box Select";
-  ot->idname = "OUTLINER_OT_select_box";
-  ot->description = "Use box selection to select tree elements";
-
-  /* api callbacks */
-  ot->invoke = outliner_box_select_invoke;
-  ot->exec = outliner_box_select_exec;
-  ot->modal = WM_gesture_box_modal;
-  ot->cancel = WM_gesture_box_cancel;
-
-  ot->poll = ED_operator_outliner_active;
-
-  /* flags */
-  ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
-
-  /* properties */
-  PropertyRNA *prop;
-
-  prop = RNA_def_boolean(
-      ot->srna, "tweak", false, "Tweak", "Tweak gesture from empty space for box selection");
-  RNA_def_property_flag(prop, PROP_SKIP_SAVE);
-
-  WM_operator_properties_gesture_box(ot);
-  WM_operator_properties_select_operation_simple(ot);
-}
-
-/* ****************************************************** */
-
-/* **************** Walk Select Tool ****************** */
-
-/* Given a tree element return the rightmost child that is visible in the outliner */
-static TreeElement *outliner_find_rightmost_visible_child(SpaceOutliner *space_outliner,
-                                                          TreeElement *te)
-{
-  while (te->subtree.last) {
-    if (TSELEM_OPEN(TREESTORE(te), space_outliner)) {
-      te = te->subtree.last;
-    }
-    else {
-      break;
-    }
-  }
-  return te;
-}
-
-/* Find previous visible element in the tree. */
-static TreeElement *outliner_find_previous_element(SpaceOutliner *space_outliner, TreeElement *te)
-{
-  if (te->prev) {
-    te = outliner_find_rightmost_visible_child(space_outliner, te->prev);
-  }
-  else if (te->parent) {
-    /* Use parent if at beginning of list */
-    te = te->parent;
-  }
-
-  return te;
-}
-
-/* Recursively search up the tree until a successor to a given element is found */
-static TreeElement *outliner_element_find_successor_in_parents(TreeElement *te)
-{
-  TreeElement *successor = te;
-  while (successor->parent) {
-    if (successor->parent->next) {
-      te = successor->parent->next;
-      break;
-    }
-    successor = successor->parent;
-  }
-
-  return te;
-}
-
-/* Find next visible element in the tree */
-static TreeElement *outliner_find_next_element(SpaceOutliner *space_outliner, TreeElement *te)
-{
-  TreeStoreElem *tselem = TREESTORE(te);
-
-  if (TSELEM_OPEN(tselem, space_outliner) && te->subtree.first) {
-    te = te->subtree.first;
-  }
-  else if (te->next) {
-    te = te->next;
-  }
-  else {
-    te = outliner_element_find_successor_in_parents(te);
-  }
-
-  return te;
-}
-
-static TreeElement *outliner_walk_left(SpaceOutliner *space_outliner,
-                                       TreeElement *te,
-                                       bool toggle_all)
-{
-  TreeStoreElem *tselem = TREESTORE(te);
-
-  if (TSELEM_OPEN(tselem, space_outliner)) {
-    outliner_item_openclose(space_outliner, te, false, toggle_all);
-  }
-  /* Only walk up a level if the element is closed and not toggling expand */
-  else if (!toggle_all && te->parent) {
-    te = te->parent;
-  }
-
-  return te;
-}
-
-static TreeElement *outliner_walk_right(SpaceOutliner *space_outliner,
-                                        TreeElement *te,
-                                        bool toggle_all)
-{
-  TreeStoreElem *tselem = TREESTORE(te);
-
-  /* Only walk down a level if the element is open and not toggling expand */
-  if (!toggle_all && TSELEM_OPEN(tselem, space_outliner) && !BLI_listbase_is_empty(&te->subtree)) {
-    te = te->subtree.first;
-  }
-  else {
-    outliner_item_openclose(space_outliner, te, true, toggle_all);
-  }
-
-  return te;
-}
-
-static TreeElement *do_outliner_select_walk(SpaceOutliner *space_outliner,
-                                            TreeElement *te,
-                                            const int direction,
-                                            const bool extend,
-                                            const bool toggle_all)
-{
-  TreeStoreElem *tselem = TREESTORE(te);
-
-  switch (direction) {
-    case UI_SELECT_WALK_UP:
-      te = outliner_find_previous_element(space_outliner, te);
-      break;
-    case UI_SELECT_WALK_DOWN:
-      te = outliner_find_next_element(space_outliner, te);
-      break;
-    case UI_SELECT_WALK_LEFT:
-      te = outliner_walk_left(space_outliner, te, toggle_all);
-      break;
-    case UI_SELECT_WALK_RIGHT:
-      te = outliner_walk_right(space_outliner, te, toggle_all);
-      break;
-  }
-
-  /* If new element is already selected, deselect the previous element */
-  TreeStoreElem *tselem_new = TREESTORE(te);
-  if (extend) {
-    tselem->flag = (tselem_new->flag & TSE_SELECTED) ? (tselem->flag & ~TSE_SELECTED) :
-                                                       (tselem->flag | TSE_SELECTED);
-  }
-
-  return te;
-}
-
-/* Find the active element to walk from, or set one if none exists.
- * Changed is set to true if the active element is found, or false if it was set */
-static TreeElement *find_walk_select_start_element(SpaceOutliner *space_outliner, bool *changed)
-{
-  TreeElement *active_te = outliner_find_element_with_flag(&space_outliner->tree, TSE_ACTIVE);
-  *changed = false;
-
-  /* If no active element exists, use the first element in the tree */
-  if (!active_te) {
-    active_te = space_outliner->tree.first;
-    *changed = true;
-  }
-
-  /* If the active element is not visible, activate the first visible parent element */
-  if (!outliner_is_element_visible(active_te)) {
-    while (!outliner_is_element_visible(active_te)) {
-      active_te = active_te->parent;
-    }
-    *changed = true;
-  }
-
-  return active_te;
-}
-
-/* Scroll the outliner when the walk element reaches the top or bottom boundary */
-static void outliner_walk_scroll(SpaceOutliner *space_outliner, ARegion *region, TreeElement *te)
-{
-  /* Account for the header height */
-  int y_max = region->v2d.cur.ymax - UI_UNIT_Y;
-  int y_min = region->v2d.cur.ymin;
-
-  /* Scroll if walked position is beyond the border */
-  if (te->ys > y_max) {
-    outliner_scroll_view(space_outliner, region, te->ys - y_max);
-  }
-  else if (te->ys < y_min) {
-    outliner_scroll_view(space_outliner, region, -(y_min - te->ys));
-  }
-}
-
-static int outliner_walk_select_invoke(bContext *C, wmOperator *op, const wmEvent *UNUSED(event))
-{
-  SpaceOutliner *space_outliner = CTX_wm_space_outliner(C);
-  ARegion *region = CTX_wm_region(C);
-
-  const short direction = RNA_enum_get(op->ptr, "direction");
-  const bool extend = RNA_boolean_get(op->ptr, "extend");
-  const bool toggle_all = RNA_boolean_get(op->ptr, "toggle_all");
-
-  bool changed;
-  TreeElement *active_te = find_walk_select_start_element(space_outliner, &changed);
-
-  /* If finding the active element did not modify the selection, proceed to walk */
-  if (!changed) {
-    active_te = do_outliner_select_walk(space_outliner, active_te, direction, extend, toggle_all);
-  }
-
-  outliner_item_select(C,
-                       space_outliner,
-                       active_te,
-                       OL_ITEM_SELECT | OL_ITEM_ACTIVATE | (extend ? OL_ITEM_EXTEND : 0));
-
-  /* Scroll outliner to focus on walk element */
-  outliner_walk_scroll(space_outliner, region, active_te);
-
-  ED_outliner_select_sync_from_outliner(C, space_outliner);
-  outliner_tag_redraw_avoid_rebuild_on_open_change(space_outliner, region);
-
-  return OPERATOR_FINISHED;
-}
-
-void OUTLINER_OT_select_walk(wmOperatorType *ot)
-{
-  /* identifiers */
-  ot->name = "Walk Select";
-  ot->idname = "OUTLINER_OT_select_walk";
-  ot->description = "Use walk navigation to select tree elements";
-
-  /* api callbacks */
-  ot->invoke = outliner_walk_select_invoke;
-  ot->poll = ED_operator_outliner_active;
-
-  ot->flag |= OPTYPE_REGISTER | OPTYPE_UNDO;
-
-  /* properties */
-  PropertyRNA *prop;
-  WM_operator_properties_select_walk_direction(ot);
-  prop = RNA_def_boolean(ot->srna, "extend", false, "Extend", "Extend selection on walk");
-  RNA_def_property_flag(prop, PROP_SKIP_SAVE);
-  prop = RNA_def_boolean(
-      ot->srna, "toggle_all", false, "Toggle All", "Toggle open/close hierarchy");
-  RNA_def_property_flag(prop, PROP_SKIP_SAVE);
-}
-
-/* ****************************************************** */