1 files changed, 22 insertions, 0 deletions
diff --git a/source/blender/blenkernel/BKE_screen.h b/source/blender/blenkernel/BKE_screen.h
index c49b6e27bba..fc7146b8cf4 100644
--- a/source/blender/blenkernel/BKE_screen.h
+++ b/source/blender/blenkernel/BKE_screen.h
@@ -34,6 +34,7 @@ extern "C" {
 struct ARegion;
 struct Header;
 struct ID;
+struct LibraryForeachIDData;
 struct ListBase;
 struct Menu;
 struct Panel;
@@ -228,6 +229,25 @@ typedef struct PanelType {
   /* draw entirely, view changes should be handled here */
   void (*draw)(const struct bContext *C, struct Panel *panel);
 
+  /* For instanced panels corresponding to a list: */
+
+  /** Reorder function, called when drag and drop finishes. */
+  void (*reorder)(struct bContext *C, struct Panel *pa, int new_index);
+  /**
+   * Get the panel and sub-panel's expansion state from the expansion flag in the corresponding
+   * data item. Called on draw updates.
+   * \note Sub-panels are indexed in depth first order,
+   * the visual order you would see if all panels were expanded.
+   */
+  short (*get_list_data_expand_flag)(const struct bContext *C, struct Panel *pa);
+  /**
+   * Set the expansion bit-field from the closed / open state of this panel and its sub-panels.
+   * Called when the expansion state of the panel changes with user input.
+   * \note Sub-panels are indexed in depth first order,
+   * the visual order you would see if all panels were expanded.
+   */
+  void (*set_list_data_expand_flag)(const struct bContext *C, struct Panel *pa, short expand_flag);
+
   /* sub panels */
   struct PanelType *parent;
   ListBase children;
@@ -389,6 +409,8 @@ float BKE_screen_view3d_zoom_from_fac(float zoomfac);
 void BKE_screen_view3d_shading_init(struct View3DShading *shading);
 
 /* screen */
+void BKE_screen_foreach_id_screen_area(struct LibraryForeachIDData *data, struct ScrArea *area);
+
 void BKE_screen_free(struct bScreen *screen);
 void BKE_screen_area_map_free(struct ScrAreaMap *area_map) ATTR_NONNULL();