From a379fdd7fba460fdceb14d6dd164116d9a4744bd Mon Sep 17 00:00:00 2001
From: Brecht Van Lommel <brechtvanlommel@pandora.be>
Date: Wed, 24 Jun 2009 14:07:48 +0000
Subject: 2.5: Object material slot operators
 add/remove/assign/select/deselect.

---
 source/blender/blenkernel/BKE_material.h           |  15 +-
 source/blender/blenkernel/intern/material.c        |   4 +-
 source/blender/editors/curve/curve_intern.h        |   1 -
 source/blender/editors/curve/curve_ops.c           |   1 -
 source/blender/editors/curve/editcurve.c           |   2 +-
 source/blender/editors/curve/editfont.c            |  44 ----
 source/blender/editors/include/ED_curve.h          |   3 +
 source/blender/editors/include/ED_mesh.h           |   3 +
 source/blender/editors/mesh/editmesh.c             |   2 +-
 source/blender/editors/mesh/editmesh_mods.c        |   4 +-
 .../blender/editors/space_buttons/buttons_intern.h |   6 +
 source/blender/editors/space_buttons/buttons_ops.c | 261 +++++++++++++++++++--
 .../blender/editors/space_buttons/space_buttons.c  |   6 +
 13 files changed, 272 insertions(+), 80 deletions(-)

diff --git a/source/blender/blenkernel/BKE_material.h b/source/blender/blenkernel/BKE_material.h
index 38a1d9b13b7..382754ee2b2 100644
--- a/source/blender/blenkernel/BKE_material.h
+++ b/source/blender/blenkernel/BKE_material.h
@@ -39,6 +39,8 @@ struct Material;
 struct ID;
 struct Object;
 
+/* materials */
+
 void init_def_material(void);
 void free_material(struct Material *sc); 
 void test_object_materials(struct ID *id);
@@ -47,15 +49,22 @@ struct Material *add_material(char *name);
 struct Material *copy_material(struct Material *ma);
 void make_local_material(struct Material *ma);
 
+void automatname(struct Material *);
+
+/* material slots */
+
 struct Material ***give_matarar(struct Object *ob);
 short *give_totcolp(struct Object *ob);
 struct Material *give_current_material(struct Object *ob, int act);
 struct ID *material_from(struct Object *ob, int act);
 void assign_material(struct Object *ob, struct Material *ma, int act);
-void new_material_to_objectdata(struct Object *ob);
 
 int find_material_index(struct Object *ob, struct Material *ma);
 
+void object_add_material_slot(struct Object *ob);
+void object_remove_material_slot(struct Object *ob);
+
+/* rendering */
 
 void init_render_material(struct Material *, int, float *);
 void init_render_materials(int, float *);
@@ -64,12 +73,8 @@ void end_render_materials(void);
 
 int material_in_material(struct Material *parmat, struct Material *mat);
 
-void automatname(struct Material *);
-void delete_material_index(struct Object *ob);            
-
 void ramp_blend(int type, float *r, float *g, float *b, float fac, float *col);
 
-
 #ifdef __cplusplus
 }
 #endif
diff --git a/source/blender/blenkernel/intern/material.c b/source/blender/blenkernel/intern/material.c
index b410c521dea..57b88bb0b3f 100644
--- a/source/blender/blenkernel/intern/material.c
+++ b/source/blender/blenkernel/intern/material.c
@@ -615,7 +615,7 @@ int find_material_index(Object *ob, Material *ma)
 	return 0;	   
 }
 
-void new_material_to_objectdata(Object *ob)
+void object_add_material_slot(Object *ob)
 {
 	Material *ma;
 	
@@ -854,7 +854,7 @@ void automatname(Material *ma)
 }
 
 
-void delete_material_index(Object *ob)
+void object_remove_material_slot(Object *ob)
 {
 	Material *mao, ***matarar;
 	Object *obt;
diff --git a/source/blender/editors/curve/curve_intern.h b/source/blender/editors/curve/curve_intern.h
index a73a54323ee..2146855a75e 100644
--- a/source/blender/editors/curve/curve_intern.h
+++ b/source/blender/editors/curve/curve_intern.h
@@ -49,7 +49,6 @@ void FONT_OT_case_toggle(struct wmOperatorType *ot);
 void FONT_OT_case_set(struct wmOperatorType *ot);
 void FONT_OT_style_toggle(struct wmOperatorType *ot);
 void FONT_OT_style_set(struct wmOperatorType *ot);
-void FONT_OT_material_set(struct wmOperatorType *ot);
 
 void FONT_OT_text_copy(struct wmOperatorType *ot);
 void FONT_OT_text_cut(struct wmOperatorType *ot);
diff --git a/source/blender/editors/curve/curve_ops.c b/source/blender/editors/curve/curve_ops.c
index 5292d86d3c9..66cde772f3e 100644
--- a/source/blender/editors/curve/curve_ops.c
+++ b/source/blender/editors/curve/curve_ops.c
@@ -106,7 +106,6 @@ void ED_operatortypes_curve(void)
 	WM_operatortype_append(FONT_OT_case_set);
 	WM_operatortype_append(FONT_OT_style_toggle);
 	WM_operatortype_append(FONT_OT_style_set);
-	WM_operatortype_append(FONT_OT_material_set);
 
 	WM_operatortype_append(FONT_OT_text_copy);
 	WM_operatortype_append(FONT_OT_text_cut);
diff --git a/source/blender/editors/curve/editcurve.c b/source/blender/editors/curve/editcurve.c
index 466908c562c..5283aacf39e 100644
--- a/source/blender/editors/curve/editcurve.c
+++ b/source/blender/editors/curve/editcurve.c
@@ -189,7 +189,7 @@ static short swap_selection_bpoint(BPoint *bp)
 		return select_bpoint(bp, SELECT, 1, VISIBLE);
 }
 
-short isNurbsel(Nurb *nu)
+int isNurbsel(Nurb *nu)
 {
 	BezTriple *bezt;
 	BPoint *bp;
diff --git a/source/blender/editors/curve/editfont.c b/source/blender/editors/curve/editfont.c
index 5389db9e2ee..9f2bd6f26f9 100644
--- a/source/blender/editors/curve/editfont.c
+++ b/source/blender/editors/curve/editfont.c
@@ -700,50 +700,6 @@ void FONT_OT_style_toggle(wmOperatorType *ot)
 	RNA_def_enum(ot->srna, "style", style_items, CU_BOLD, "Style", "Style to set selection to.");
 }
 
-/******************* set material operator ********************/
-
-static int set_material_exec(bContext *C, wmOperator *op)
-{
-	Scene *scene= CTX_data_scene(C);
-	Object *obedit= CTX_data_edit_object(C);
-	Curve *cu= obedit->data;
-	EditFont *ef= cu->editfont;
-	int i, mat_nr, selstart, selend;
-
-	if(!BKE_font_getselection(obedit, &selstart, &selend))
-		return OPERATOR_CANCELLED;
-
-	if(RNA_property_is_set(op->ptr, "index"))
-		mat_nr= RNA_int_get(op->ptr, "index");
-	else
-		mat_nr= obedit->actcol;
-
-	for(i=selstart; i<=selend; i++)
-		ef->textbufinfo[i].mat_nr = mat_nr;
-
-	DAG_object_flush_update(scene, obedit, OB_RECALC_DATA);
-	WM_event_add_notifier(C, NC_OBJECT|ND_GEOM_DATA, obedit);
-
-	return OPERATOR_FINISHED;
-}
-
-void FONT_OT_material_set(wmOperatorType *ot)
-{
-	/* identifiers */
-	ot->name= "Set Material";
-	ot->idname= "FONT_OT_material_set";
-	
-	/* api callbacks */
-	ot->exec= set_material_exec;
-	ot->poll= ED_operator_editfont;
-	
-	/* flags */
-	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
-
-	/* properties */
-	RNA_def_int(ot->srna, "index", 0, 0, INT_MAX, "Material Index", "Material slot index.", 0, INT_MAX);
-}
-
 /******************* copy text operator ********************/
 
 static void copy_selection(Object *obedit)
diff --git a/source/blender/editors/include/ED_curve.h b/source/blender/editors/include/ED_curve.h
index c619ee80f70..2cebc6a572a 100644
--- a/source/blender/editors/include/ED_curve.h
+++ b/source/blender/editors/include/ED_curve.h
@@ -30,6 +30,7 @@
 
 struct Base;
 struct bContext;
+struct Nurb;
 struct Object;
 struct Scene;
 struct Text;
@@ -52,6 +53,8 @@ void	mouse_nurb		(struct bContext *C, short mval[2], int extend);
 
 struct Nurb *add_nurbs_primitive(struct bContext *C, int type, int newname);
 
+int		isNurbsel		(struct Nurb *nu);;
+
 /* editfont.h */
 void	undo_push_font	(struct bContext *C, char *name);
 void	make_editText	(struct Object *obedit);
diff --git a/source/blender/editors/include/ED_mesh.h b/source/blender/editors/include/ED_mesh.h
index 6dff4ee6ca4..937f6384f6a 100644
--- a/source/blender/editors/include/ED_mesh.h
+++ b/source/blender/editors/include/ED_mesh.h
@@ -147,6 +147,9 @@ int			EM_init_backbuf_circle(struct ViewContext *vc, short xs, short ys, short r
 void		EM_hide_mesh(struct EditMesh *em, int swap);
 void		EM_reveal_mesh(struct EditMesh *em);
 
+void		EM_select_by_material(struct EditMesh *em, int index);
+void		EM_deselect_by_material(struct EditMesh *em, int index); 
+
 /* editface.c */
 struct MTFace	*EM_get_active_mtface(struct EditMesh *em, struct EditFace **act_efa, struct MCol **mcol, int sloppy);
 
diff --git a/source/blender/editors/mesh/editmesh.c b/source/blender/editors/mesh/editmesh.c
index c05751feddc..7f5201f4704 100644
--- a/source/blender/editors/mesh/editmesh.c
+++ b/source/blender/editors/mesh/editmesh.c
@@ -1556,7 +1556,7 @@ static int mesh_separate_material(Scene *scene, Base *editbase)
 		/* clear selection, we're going to use that to select material group */
 		EM_clear_flag_all(em, SELECT);
 		/* select the material */
-		editmesh_select_by_material(em, curr_mat);
+		EM_select_by_material(em, curr_mat);
 		/* and now separate */
 		if(0==mesh_separate_selected(scene, editbase)) {
 			BKE_mesh_end_editmesh(me, em);
diff --git a/source/blender/editors/mesh/editmesh_mods.c b/source/blender/editors/mesh/editmesh_mods.c
index 07ed6ae7a01..7e9fcb10984 100644
--- a/source/blender/editors/mesh/editmesh_mods.c
+++ b/source/blender/editors/mesh/editmesh_mods.c
@@ -3484,7 +3484,7 @@ void MESH_OT_select_random(wmOperatorType *ot)
 	RNA_def_float_percentage(ot->srna, "percent", 0.5f, 0.0f, 1.0f, "Percent", "Percentage of vertices to select randomly.", 0.0001f, 1.0f);
 }
 
-void editmesh_select_by_material(EditMesh *em, int index) 
+void EM_select_by_material(EditMesh *em, int index) 
 {
 	EditFace *efa;
 	
@@ -3497,7 +3497,7 @@ void editmesh_select_by_material(EditMesh *em, int index)
 	EM_selectmode_flush(em);
 }
 
-void editmesh_deselect_by_material(EditMesh *em, int index) 
+void EM_deselect_by_material(EditMesh *em, int index) 
 {
 	EditFace *efa;
 	
diff --git a/source/blender/editors/space_buttons/buttons_intern.h b/source/blender/editors/space_buttons/buttons_intern.h
index 196647a3750..b213e4288be 100644
--- a/source/blender/editors/space_buttons/buttons_intern.h
+++ b/source/blender/editors/space_buttons/buttons_intern.h
@@ -61,6 +61,12 @@ void buttons_context_draw(const struct bContext *C, struct uiLayout *layout);
 void buttons_context_register(struct ARegionType *art);
 
 /* buttons_ops.c */
+void OBJECT_OT_material_slot_add(struct wmOperatorType *ot);
+void OBJECT_OT_material_slot_remove(struct wmOperatorType *ot);
+void OBJECT_OT_material_slot_assign(struct wmOperatorType *ot);
+void OBJECT_OT_material_slot_select(struct wmOperatorType *ot);
+void OBJECT_OT_material_slot_deselect(struct wmOperatorType *ot);
+
 void MATERIAL_OT_new(struct wmOperatorType *ot);
 void TEXTURE_OT_new(struct wmOperatorType *ot);
 void WORLD_OT_new(struct wmOperatorType *ot);
diff --git a/source/blender/editors/space_buttons/buttons_ops.c b/source/blender/editors/space_buttons/buttons_ops.c
index 63469a8294d..6755a2be1b7 100644
--- a/source/blender/editors/space_buttons/buttons_ops.c
+++ b/source/blender/editors/space_buttons/buttons_ops.c
@@ -30,6 +30,7 @@
 
 #include "MEM_guardedalloc.h"
 
+#include "DNA_curve_types.h"
 #include "DNA_object_types.h"
 #include "DNA_material_types.h"
 #include "DNA_texture_types.h"
@@ -37,31 +38,250 @@
 #include "DNA_world_types.h"
 
 #include "BKE_context.h"
+#include "BKE_depsgraph.h"
+#include "BKE_font.h"
 #include "BKE_library.h"
 #include "BKE_material.h"
 #include "BKE_texture.h"
+#include "BKE_utildefines.h"
 #include "BKE_world.h"
 
+#include "BLI_editVert.h"
+
 #include "RNA_access.h"
 
 #include "WM_api.h"
 #include "WM_types.h"
 
+#include "ED_curve.h"
+#include "ED_mesh.h"
+
 #include "buttons_intern.h"	// own include
 
+/********************** material slot operators *********************/
+
+static int material_slot_add_exec(bContext *C, wmOperator *op)
+{
+	Object *ob= CTX_data_pointer_get_type(C, "object", &RNA_Object).data;
+
+	if(!ob)
+		return OPERATOR_CANCELLED;
+
+	object_add_material_slot(ob);
+	WM_event_add_notifier(C, NC_OBJECT|ND_DRAW, ob);
+	
+	return OPERATOR_FINISHED;
+}
+
+void OBJECT_OT_material_slot_add(wmOperatorType *ot)
+{
+	/* identifiers */
+	ot->name= "Add Material Slot";
+	ot->idname= "OBJECT_OT_material_slot_add";
+	
+	/* api callbacks */
+	ot->exec= material_slot_add_exec;
+
+	/* flags */
+	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
+}
+
+static int material_slot_remove_exec(bContext *C, wmOperator *op)
+{
+	Object *ob= CTX_data_pointer_get_type(C, "object", &RNA_Object).data;
+
+	if(!ob)
+		return OPERATOR_CANCELLED;
+
+	object_remove_material_slot(ob);
+	WM_event_add_notifier(C, NC_OBJECT|ND_DRAW, ob);
+	
+	return OPERATOR_FINISHED;
+}
+
+void OBJECT_OT_material_slot_remove(wmOperatorType *ot)
+{
+	/* identifiers */
+	ot->name= "Remove Material Slot";
+	ot->idname= "OBJECT_OT_material_slot_remove";
+	
+	/* api callbacks */
+	ot->exec= material_slot_remove_exec;
+
+	/* flags */
+	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
+}
+
+static int material_slot_assign_exec(bContext *C, wmOperator *op)
+{
+	Scene *scene= CTX_data_scene(C);
+	Object *ob= CTX_data_pointer_get_type(C, "object", &RNA_Object).data;
+
+	if(!ob)
+		return OPERATOR_CANCELLED;
+
+	if(ob && ob->actcol>0) {
+		if(ob->type == OB_MESH) {
+			EditMesh *em= ((Mesh*)ob->data)->edit_mesh;
+			EditFace *efa;
+
+			if(em) {
+				for(efa= em->faces.first; efa; efa=efa->next)
+					if(efa->f & SELECT)
+						efa->mat_nr= ob->actcol-1;
+			}
+		}
+		else if(ELEM(ob->type, OB_CURVE, OB_SURF)) {
+			ListBase *editnurb= ((Curve*)ob->data)->editnurb;
+			Nurb *nu;
+
+			if(editnurb) {
+				for(nu= editnurb->first; nu; nu= nu->next)
+					if(isNurbsel(nu))
+						nu->mat_nr= nu->charidx= ob->actcol-1;
+			}
+		}
+		else if(ob->type == OB_FONT) {
+			EditFont *ef= ((Curve*)ob->data)->editfont;
+    		int i, selstart, selend;
+
+			if(ef && BKE_font_getselection(ob, &selstart, &selend)) {
+				for(i=selstart; i<=selend; i++)
+					ef->textbufinfo[i].mat_nr = ob->actcol-1;
+			}
+		}
+	}
+
+    DAG_object_flush_update(scene, ob, OB_RECALC_DATA);
+    WM_event_add_notifier(C, NC_OBJECT|ND_GEOM_DATA, ob);
+	
+	return OPERATOR_FINISHED;
+}
+
+void OBJECT_OT_material_slot_assign(wmOperatorType *ot)
+{
+	/* identifiers */
+	ot->name= "Assign Material Slot";
+	ot->idname= "OBJECT_OT_material_slot_assign";
+	
+	/* api callbacks */
+	ot->exec= material_slot_assign_exec;
+
+	/* flags */
+	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
+}
+
+static int material_slot_de_select(bContext *C, int select)
+{
+	Object *ob= CTX_data_pointer_get_type(C, "object", &RNA_Object).data;
+
+	if(!ob)
+		return OPERATOR_CANCELLED;
+
+	if(ob->type == OB_MESH) {
+		EditMesh *em= ((Mesh*)ob->data)->edit_mesh;
+
+		if(em) {
+			if(select)
+				EM_select_by_material(em, ob->actcol-1);
+			else
+				EM_deselect_by_material(em, ob->actcol-1);
+		}
+	}
+	else if ELEM(ob->type, OB_CURVE, OB_SURF) {
+		ListBase *editnurb= ((Curve*)ob->data)->editnurb;
+		Nurb *nu;
+		BPoint *bp;
+		BezTriple *bezt;
+		int a;
+
+		for(nu= editnurb->first; nu; nu=nu->next) {
+			if(nu->mat_nr==ob->actcol-1) {
+				if(nu->bezt) {
+					a= nu->pntsu;
+					bezt= nu->bezt;
+					while(a--) {
+						if(bezt->hide==0) {
+							if(select) {
+								bezt->f1 |= SELECT;
+								bezt->f2 |= SELECT;
+								bezt->f3 |= SELECT;
+							}
+							else {
+								bezt->f1 &= ~SELECT;
+								bezt->f2 &= ~SELECT;
+								bezt->f3 &= ~SELECT;
+							}
+						}
+						bezt++;
+					}
+				}
+				else if(nu->bp) {
+					a= nu->pntsu*nu->pntsv;
+					bp= nu->bp;
+					while(a--) {
+						if(bp->hide==0) {
+							if(select) bp->f1 |= SELECT;
+							else bp->f1 &= ~SELECT;
+						}
+						bp++;
+					}
+				}
+			}
+		}
+	}
+
+    WM_event_add_notifier(C, NC_OBJECT|ND_GEOM_SELECT, ob);
+
+	return OPERATOR_FINISHED;
+}
+
+static int material_slot_select_exec(bContext *C, wmOperator *op)
+{
+	return material_slot_de_select(C, 1);
+}
+
+void OBJECT_OT_material_slot_select(wmOperatorType *ot)
+{
+	/* identifiers */
+	ot->name= "Select Material Slot";
+	ot->idname= "OBJECT_OT_material_slot_select";
+	
+	/* api callbacks */
+	ot->exec= material_slot_select_exec;
+
+	/* flags */
+	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
+}
+
+static int material_slot_deselect_exec(bContext *C, wmOperator *op)
+{
+	return material_slot_de_select(C, 0);
+}
+
+void OBJECT_OT_material_slot_deselect(wmOperatorType *ot)
+{
+	/* identifiers */
+	ot->name= "Deselect Material Slot";
+	ot->idname= "OBJECT_OT_material_slot_deselect";
+	
+	/* api callbacks */
+	ot->exec= material_slot_deselect_exec;
+
+	/* flags */
+	ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO;
+}
+
 /********************** new material operator *********************/
 
 static int new_material_exec(bContext *C, wmOperator *op)
 {
-	PointerRNA ptr;
-	Material *ma;
+	Material *ma= CTX_data_pointer_get_type(C, "material", &RNA_Material).data;
 	Object *ob;
+	PointerRNA ptr;
 	int index;
 
 	/* add or copy material */
-	ptr= CTX_data_pointer_get(C, "material");
-	ma= (RNA_struct_is_a(ptr.type, &RNA_Material))? ptr.data: NULL;
-
 	if(ma)
 		ma= copy_material(ma);
 	else
@@ -70,9 +290,9 @@ static int new_material_exec(bContext *C, wmOperator *op)
 	ma->id.us--; /* compensating for us++ in assign_material */
 
 	/* attempt to assign to material slot */
-	ptr= CTX_data_pointer_get(C, "material_slot");
+	ptr= CTX_data_pointer_get_type(C, "material_slot", &RNA_MaterialSlot);
 
-	if(RNA_struct_is_a(ptr.type, &RNA_MaterialSlot)) {
+	if(ptr.data) {
 		ob= ptr.id.data;
 		index= (Material**)ptr.data - ob->mat;
 
@@ -80,6 +300,8 @@ static int new_material_exec(bContext *C, wmOperator *op)
 
 		WM_event_add_notifier(C, NC_OBJECT|ND_DRAW, ob);
 	}
+
+	WM_event_add_notifier(C, NC_MATERIAL|NA_ADDED, ma);
 	
 	return OPERATOR_FINISHED;
 }
@@ -101,15 +323,12 @@ void MATERIAL_OT_new(wmOperatorType *ot)
 
 static int new_texture_exec(bContext *C, wmOperator *op)
 {
-	PointerRNA ptr;
+	Tex *tex= CTX_data_pointer_get_type(C, "texture", &RNA_Texture).data;
 	ID *id;
-	Tex *tex;
 	MTex *mtex;
+	PointerRNA ptr;
 
 	/* add or copy texture */
-	ptr= CTX_data_pointer_get(C, "texture");
-	tex= (RNA_struct_is_a(ptr.type, &RNA_Texture))? ptr.data: NULL;
-
 	if(tex)
 		tex= copy_texture(tex);
 	else
@@ -118,9 +337,9 @@ static int new_texture_exec(bContext *C, wmOperator *op)
 	id_us_min(&tex->id);
 
 	/* attempt to assign to texture slot */
-	ptr= CTX_data_pointer_get(C, "texture_slot");
+	ptr= CTX_data_pointer_get_type(C, "texture_slot", &RNA_TextureSlot);
 
-	if(RNA_struct_is_a(ptr.type, &RNA_TextureSlot)) {
+	if(ptr.data) {
 		id= ptr.id.data;
 		mtex= ptr.data;
 
@@ -133,6 +352,8 @@ static int new_texture_exec(bContext *C, wmOperator *op)
 
 		/* XXX nodes, notifier .. */
 	}
+
+	WM_event_add_notifier(C, NC_TEXTURE|NA_ADDED, tex);
 	
 	return OPERATOR_FINISHED;
 }
@@ -154,27 +375,21 @@ void TEXTURE_OT_new(wmOperatorType *ot)
 
 static int new_world_exec(bContext *C, wmOperator *op)
 {
-	PointerRNA ptr;
-	Scene *scene;
-	World *wo;
+	Scene *scene= CTX_data_scene(C);
+	World *wo= CTX_data_pointer_get_type(C, "world", &RNA_World).data;
 
 	/* add or copy world */
-	ptr= CTX_data_pointer_get(C, "world");
-	wo= (RNA_struct_is_a(ptr.type, &RNA_World))? ptr.data: NULL;
-
 	if(wo)
 		wo= copy_world(wo);
 	else
 		wo= add_world("World");
 
 	/* assign to scene */
-	scene= CTX_data_scene(C);
-
 	if(scene->world)
 		id_us_min(&scene->world->id);
 	scene->world= wo;
 
-	// XXX notifier
+	WM_event_add_notifier(C, NC_WORLD|NA_ADDED, wo);
 	
 	return OPERATOR_FINISHED;
 }
diff --git a/source/blender/editors/space_buttons/space_buttons.c b/source/blender/editors/space_buttons/space_buttons.c
index e5d2215be29..0e444d7f0b7 100644
--- a/source/blender/editors/space_buttons/space_buttons.c
+++ b/source/blender/editors/space_buttons/space_buttons.c
@@ -210,6 +210,12 @@ static void buttons_main_area_draw(const bContext *C, ARegion *ar)
 
 void buttons_operatortypes(void)
 {
+	WM_operatortype_append(OBJECT_OT_material_slot_add);
+	WM_operatortype_append(OBJECT_OT_material_slot_remove);
+	WM_operatortype_append(OBJECT_OT_material_slot_assign);
+	WM_operatortype_append(OBJECT_OT_material_slot_select);
+	WM_operatortype_append(OBJECT_OT_material_slot_deselect);
+
 	WM_operatortype_append(MATERIAL_OT_new);
 	WM_operatortype_append(TEXTURE_OT_new);
 	WM_operatortype_append(WORLD_OT_new);
-- 
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