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resolverContextBinder.h
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1 //
2 // Copyright 2016 Pixar
3 //
4 // Licensed under the Apache License, Version 2.0 (the "Apache License")
5 // with the following modification; you may not use this file except in
6 // compliance with the Apache License and the following modification to it:
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9 // 6. Trademarks. This License does not grant permission to use the trade
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14 // You may obtain a copy of the Apache License at
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24 #ifndef PXR_USD_AR_RESOLVER_CONTEXT_BINDER_H
25 #define PXR_USD_AR_RESOLVER_CONTEXT_BINDER_H
26 
27 /// \file ar/resolverContextBinder.h
28 
29 #include "pxr/pxr.h"
30 #include "pxr/usd/ar/api.h"
32 #include "pxr/base/vt/value.h"
33 
35 
36 class ArResolver;
37 
38 /// \class ArResolverContextBinder
39 ///
40 /// Helper object for managing the binding and unbinding of
41 /// ArResolverContext objects with the asset resolver.
42 ///
43 /// Context binding and unbinding are thread-specific. If you bind a context in
44 /// a thread, that binding will only be visible to that thread.
45 /// See \ref ar_resolver_contexts "Resolver Contexts" for more details.
46 ///
47 /// \see \ref ArResolver_context "Asset Resolver Context Operations"
49 {
50 public:
51  /// Bind the given \p context with the asset resolver.
52  ///
53  /// Calls ArResolver::BindContext on the configured asset resolver
54  /// and saves the bindingData populated by that function.
55  AR_API
57  const ArResolverContext& context);
58 
59  /// Bind the given \p context to the given \p assetResolver.
60  ///
61  /// Calls ArResolver::BindContext on the given \p assetResolver
62  /// and saves the bindingData populated by that function.
63  AR_API
65  ArResolver* assetResolver,
66  const ArResolverContext& context);
67 
68  /// Unbinds the context specified in the constructor of this
69  /// object from the asset resolver.
70  ///
71  /// Calls ArResolver::UnbindContext on the asset resolver that was
72  /// bound to originally, passing the saved bindingData to that function.
73  AR_API
75 
76 private:
77  ArResolver* _resolver;
78  ArResolverContext _context;
79  VtValue _bindingData;
80 };
81 
83 
84 #endif // PXR_USD_AR_RESOLVER_CONTEXT_BINDER_H
#define AR_API
Definition: api.h:40
AR_API ~ArResolverContextBinder()
PXR_NAMESPACE_CLOSE_SCOPE PXR_NAMESPACE_OPEN_SCOPE
Definition: path.h:1441
#define PXR_NAMESPACE_CLOSE_SCOPE
Definition: pxr.h:91
AR_API ArResolverContextBinder(const ArResolverContext &context)
Definition: value.h:167