/* static */
UsdUISceneGraphPrimAPI
UsdUISceneGraphPrimAPI::Apply(const UsdStagePtr &stage, const SdfPath &path)
{
// Ensure we have a valid stage, path and prim
if (!stage) {
TF_CODING_ERROR("Invalid stage");
return UsdUISceneGraphPrimAPI();
}
if (path == SdfPath::AbsoluteRootPath()) {
TF_CODING_ERROR("Cannot apply an api schema on the pseudoroot");
return UsdUISceneGraphPrimAPI();
}
auto prim = stage->GetPrimAtPath(path);
if (!prim) {
TF_CODING_ERROR("Prim at <%s> does not exist.", path.GetText());
return UsdUISceneGraphPrimAPI();
}
TfToken apiName("SceneGraphPrimAPI");
// Get the current listop at the edit target
UsdEditTarget editTarget = stage->GetEditTarget();
SdfPrimSpecHandle primSpec = editTarget.GetPrimSpecForScenePath(path);
SdfTokenListOp listOp = primSpec->GetInfo(UsdTokens->apiSchemas)
.UncheckedGet<SdfTokenListOp>();
// Append our name to the prepend list, if it doesnt exist locally
TfTokenVector prepends = listOp.GetPrependedItems();
if (std::find(prepends.begin(), prepends.end(), apiName) != prepends.end()) {
return UsdUISceneGraphPrimAPI();
}
SdfTokenListOp prependListOp;
prepends.push_back(apiName);
prependListOp.SetPrependedItems(prepends);
auto result = listOp.ApplyOperations(prependListOp);
if (!result) {
TF_CODING_ERROR("Failed to prepend api name to current listop.");
return UsdUISceneGraphPrimAPI();
}
// Set the listop at the current edit target and return the API prim
primSpec->SetInfo(UsdTokens->apiSchemas, VtValue(*result));
return UsdUISceneGraphPrimAPI(prim);
}
char * getApiName(void){
return apiName();
}
