Revision: 33636
          
http://projects.blender.org/plugins/scmsvn/viewcvs.php?view=rev&root=bf-blender&revision=33636
Author:   campbellbarton
Date:     2010-12-13 12:39:11 +0100 (Mon, 13 Dec 2010)

Log Message:
-----------
check if a path can be created to a property before showing keyframe items in 
menus since they only give an error when accessed.

Modified Paths:
--------------
    trunk/blender/source/blender/editors/interface/interface_handlers.c
    trunk/blender/source/blender/makesrna/RNA_access.h
    trunk/blender/source/blender/makesrna/intern/rna_access.c

Modified: trunk/blender/source/blender/editors/interface/interface_handlers.c
===================================================================
--- trunk/blender/source/blender/editors/interface/interface_handlers.c 
2010-12-13 11:25:23 UTC (rev 33635)
+++ trunk/blender/source/blender/editors/interface/interface_handlers.c 
2010-12-13 11:39:11 UTC (rev 33636)
@@ -4116,7 +4116,12 @@
        uiLayoutSetOperatorContext(layout, WM_OP_INVOKE_DEFAULT);
 
        if(but->rnapoin.data && but->rnaprop) {
+               short is_anim= RNA_property_animateable(&but->rnapoin, 
but->rnaprop);
 
+               /* second slower test, saved people finding keyframe items in 
menus when its not possible */
+               if(is_anim)
+                       is_anim= RNA_property_path_from_ID_check(&but->rnapoin, 
but->rnaprop);
+
                length= RNA_property_array_length(&but->rnapoin, but->rnaprop);
                
                /* Keyframes */
@@ -4133,7 +4138,7 @@
                        }
                }
                else if(but->flag & UI_BUT_DRIVEN);
-               else if(RNA_property_animateable(&but->rnapoin, but->rnaprop)) {
+               else if(is_anim) {
                        if(length) {
                                uiItemBooleanO(layout, "Insert Keyframes", 0, 
"ANIM_OT_keyframe_insert_button", "all", 1);
                                uiItemBooleanO(layout, "Insert Single 
Keyframe", 0, "ANIM_OT_keyframe_insert_button", "all", 0);
@@ -4158,7 +4163,7 @@
                                uiItemO(layout, "Paste Driver", 0, 
"ANIM_OT_paste_driver_button");
                }
                else if(but->flag & (UI_BUT_ANIMATED_KEY|UI_BUT_ANIMATED));
-               else if(RNA_property_animateable(&but->rnapoin, but->rnaprop)) {
+               else if(is_anim) {
                        uiItemS(layout);
 
                        if(length) {
@@ -4173,7 +4178,7 @@
                }
                
                /* Keying Sets */
-               if(RNA_property_animateable(&but->rnapoin, but->rnaprop)) {
+               if(is_anim) {
                        uiItemS(layout);
 
                        if(length) {

Modified: trunk/blender/source/blender/makesrna/RNA_access.h
===================================================================
--- trunk/blender/source/blender/makesrna/RNA_access.h  2010-12-13 11:25:23 UTC 
(rev 33635)
+++ trunk/blender/source/blender/makesrna/RNA_access.h  2010-12-13 11:39:11 UTC 
(rev 33636)
@@ -682,6 +682,7 @@
 int RNA_property_editable_flag(PointerRNA *ptr, PropertyRNA *prop); /* without 
lib check, only checks the flag */
 int RNA_property_animateable(PointerRNA *ptr, PropertyRNA *prop);
 int RNA_property_animated(PointerRNA *ptr, PropertyRNA *prop);
+int RNA_property_path_from_ID_check(PointerRNA *ptr, PropertyRNA *prop); /* 
slow, use with care */
 
 void RNA_property_update(struct bContext *C, PointerRNA *ptr, PropertyRNA 
*prop);
 void RNA_property_update_main(struct Main *bmain, struct Scene *scene, 
PointerRNA *ptr, PropertyRNA *prop);

Modified: trunk/blender/source/blender/makesrna/intern/rna_access.c
===================================================================
--- trunk/blender/source/blender/makesrna/intern/rna_access.c   2010-12-13 
11:25:23 UTC (rev 33635)
+++ trunk/blender/source/blender/makesrna/intern/rna_access.c   2010-12-13 
11:39:11 UTC (rev 33636)
@@ -1238,6 +1238,29 @@
        return 0;
 }
 
+
+/* this function is to check if its possible to create a valid path from the ID
+ * its slow so dont call in a loop */
+int RNA_property_path_from_ID_check(PointerRNA *ptr, PropertyRNA *prop)
+{
+       char *path= RNA_path_from_ID_to_property(ptr, prop);
+       int ret= 0;
+
+       if(path) {
+               PointerRNA id_ptr;
+               PointerRNA r_ptr;
+               PropertyRNA *r_prop;
+
+               RNA_id_pointer_create(ptr->id.data, &id_ptr);
+               RNA_path_resolve(&id_ptr, path, &r_ptr, &r_prop);
+               ret= (prop == r_prop);
+               MEM_freeN(path);
+       }
+
+       return ret;
+}
+
+
 static void rna_property_update(bContext *C, Main *bmain, Scene *scene, 
PointerRNA *ptr, PropertyRNA *prop)
 {
        int is_rna = (prop->magic == RNA_MAGIC);
@@ -4760,4 +4783,3 @@
 
        return 0;
 }
-


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