childrenUtils.h

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//
// Copyright 2016 Pixar
//
// Licensed under the Apache License, Version 2.0 (the "Apache License")
// with the following modification; you may not use this file except in
// compliance with the Apache License and the following modification to it:
// Section 6. Trademarks. is deleted and replaced with:
//
// 6. Trademarks. This License does not grant permission to use the trade
//    names, trademarks, service marks, or product names of the Licensor
//    and its affiliates, except as required to comply with Section 4(c) of
//    the License and to reproduce the content of the NOTICE file.
//
// You may obtain a copy of the Apache License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the Apache License with the above modification is
// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the Apache License for the specific
// language governing permissions and limitations under the Apache License.
//
#ifndef PXR_USD_SDF_CHILDREN_UTILS_H
#define PXR_USD_SDF_CHILDREN_UTILS_H


#include "pxr/pxr.h"
#include "pxr/usd/sdf/api.h"
#include "pxr/usd/sdf/allowed.h"
#include "pxr/usd/sdf/types.h"

PXR_NAMESPACE_OPEN_SCOPE

template<class ChildPolicy>
class Sdf_ChildrenUtils
{
public:
    typedef typename ChildPolicy::KeyType KeyType;

    typedef typename ChildPolicy::FieldType FieldType;

    static bool CreateSpec(
        const SdfLayerHandle &layer,
        const SdfPath &childPath,
        SdfSpecType specType,
        bool inert=true) {
        return CreateSpec(get_pointer(layer), childPath, specType, inert);
    }

    // This overload is intended primarily for internal use.
    SDF_API
    static bool CreateSpec(
        SdfLayer *layer,
        const SdfPath &childPath,
        SdfSpecType specType,
        bool inert=true);


    SDF_API
    static bool IsValidName(const FieldType &newName);

    SDF_API
    static bool IsValidName(const std::string &newName);

    static SdfAllowed CanRename(
        const SdfSpec &spec,
        const FieldType &newName);

    SDF_API
    static bool Rename(
        const SdfSpec &spec,
        const FieldType &newName);



    SDF_API
    static bool SetChildren(
        const SdfLayerHandle &layer,
        const SdfPath &path,
        const std::vector<typename ChildPolicy::ValueType> &values);

    SDF_API
    static bool InsertChild(
        const SdfLayerHandle &layer,
        const SdfPath &path,
        const typename ChildPolicy::ValueType& value,
        int index);

    SDF_API
    static bool RemoveChild(
        const SdfLayerHandle &layer,
        const SdfPath &path,
        const typename ChildPolicy::KeyType& key);



    SDF_API
    static bool MoveChildForBatchNamespaceEdit(
        const SdfLayerHandle &layer,
        const SdfPath &path,
        const typename ChildPolicy::ValueType& value,
        const typename ChildPolicy::FieldType& newName,
        int index);

    SDF_API
    static bool RemoveChildForBatchNamespaceEdit(
        const SdfLayerHandle &layer,
        const SdfPath &path,
        const typename ChildPolicy::KeyType& key)
    {
        return RemoveChild(layer, path, key);
    }

    SDF_API
    static bool CanMoveChildForBatchNamespaceEdit(
        const SdfLayerHandle &layer,
        const SdfPath &path,
        const typename ChildPolicy::ValueType& value,
        const typename ChildPolicy::FieldType& newName,
        int index,
        std::string* whyNot);

    SDF_API
    static bool CanRemoveChildForBatchNamespaceEdit(
        const SdfLayerHandle &layer,
        const SdfPath &path,
        const typename ChildPolicy::FieldType& key,
        std::string* whyNot);

};

PXR_NAMESPACE_CLOSE_SCOPE

#endif // PXR_USD_SDF_CHILDREN_UTILS_H