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cleanupTracker.h
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cleanupTracker.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_CLEANUP_TRACKER_H
#define PXR_USD_SDF_CLEANUP_TRACKER_H
/// \file sdf/cleanupTracker.h
#include "pxr/pxr.h"
#include "pxr/usd/sdf/declareHandles.h"
#include "pxr/usd/sdf/spec.h"
PXR_NAMESPACE_OPEN_SCOPE
SDF_DECLARE_HANDLES(SdfSpec);
#include <vector>
/// \class Sdf_CleanupTracker
///
/// A singleton that tracks specs edited within an Sdf_CleanupEnabler scope.
///
/// When the last Sdf_CleanupEnabler goes out of scope, the specs are removed
/// from the layer if they are inert.
///
class Sdf_CleanupTracker : public TfWeakBase
{
public:
/// Retrieves singleton instance.
static Sdf_CleanupTracker &GetInstance();
/// Adds the spec to the vector of tracked specs if there is at least one
/// Sdf_CleanupEnabler on the stack.
void AddSpecIfTracking(SdfSpecHandle const &spec);
/// Return the authoring monitor identified by the index
void CleanupSpecs();
private:
Sdf_CleanupTracker();
~Sdf_CleanupTracker();
std::vector<SdfSpecHandle> _specs;
friend class TfSingleton<Sdf_CleanupTracker>;
};
PXR_NAMESPACE_CLOSE_SCOPE
#endif // PXR_USD_SDF_CLEANUP_TRACKER_H