property.h

//
// 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_USD_PROPERTY_H
#define PXR_USD_USD_PROPERTY_H

#include "pxr/pxr.h"
#include "pxr/usd/usd/api.h"
#include "pxr/usd/usd/common.h"
#include "pxr/usd/usd/object.h"
#include "pxr/usd/usd/prim.h"

#include "pxr/usd/sdf/path.h"
#include "pxr/usd/sdf/propertySpec.h"
#include "pxr/base/vt/value.h"

PXR_NAMESPACE_OPEN_SCOPE


class UsdProperty;

class UsdProperty : public UsdObject {
public:
    UsdProperty() : UsdObject(_Null<UsdProperty>()) {}

    // --------------------------------------------------------------------- //
    // --------------------------------------------------------------------- //


    USD_API
    SdfPropertySpecHandleVector GetPropertyStack(
        UsdTimeCode time = UsdTimeCode::Default()) const;

    USD_API
    std::vector<std::pair<SdfPropertySpecHandle, SdfLayerOffset>> 
    GetPropertyStackWithLayerOffsets(
        UsdTimeCode time = UsdTimeCode::Default()) const;

    USD_API
    TfToken GetBaseName() const;

    USD_API
    TfToken GetNamespace() const;

    USD_API
    std::vector<std::string> SplitName() const;


    USD_API
    std::string GetDisplayGroup() const;

    USD_API
    bool SetDisplayGroup(const std::string& displayGroup) const;

    USD_API
    bool ClearDisplayGroup() const;

    USD_API
    bool HasAuthoredDisplayGroup() const;

    USD_API
    std::vector<std::string> GetNestedDisplayGroups() const;

    USD_API
    bool SetNestedDisplayGroups(
        const std::vector<std::string>& nestedGroups) const;

    USD_API
    bool IsCustom() const;

    USD_API
    bool SetCustom(bool isCustom) const;


    USD_API
    bool IsDefined() const;

    USD_API
    bool IsAuthored() const;

    USD_API
    bool IsAuthoredAt(const class UsdEditTarget &editTarget) const;


    // --------------------------------------------------------------------- //
    // --------------------------------------------------------------------- //

    USD_API
    UsdProperty FlattenTo(const UsdPrim &parent) const;

    USD_API
    UsdProperty FlattenTo(const UsdPrim &parent,
                          const TfToken &propName) const;

    USD_API
    UsdProperty FlattenTo(const UsdProperty &property) const;

protected:
    template <class Derived>
    UsdProperty(_Null<Derived>) : UsdObject(_Null<Derived>()) {}

    // Gets the targets of the given spec type. Returns true if an authored
    // opinion is found and no composition errors occured. If foundErrors is
    // provided, it will be set to true only if errors are encountered.
    bool _GetTargets(SdfSpecType specType, SdfPathVector *out,
                     bool *foundErrors = nullptr) const;
    
private:
    friend class UsdAttribute;
    friend class UsdObject;
    friend class UsdPrim;
    friend class UsdRelationship;
    friend class Usd_PrimData;

    UsdProperty(UsdObjType objType,
                const Usd_PrimDataHandle &prim,
                const SdfPath &proxyPrimPath,
                const TfToken &propName)
        : UsdObject(objType, prim, proxyPrimPath, propName) {}

};


PXR_NAMESPACE_CLOSE_SCOPE

#endif // PXR_USD_USD_PROPERTY_H