| // Copyright 2018 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef PDF_PDFIUM_PDFIUM_UNSUPPORTED_FEATURES_H_ |
| #define PDF_PDFIUM_PDFIUM_UNSUPPORTED_FEATURES_H_ |
| |
| namespace chrome_pdf { |
| |
| class PDFiumEngine; |
| |
| void InitializeUnsupportedFeaturesHandler(); |
| |
| // Create a local variable of this when calling PDFium functions which can call |
| // our global callback when an unsupported feature is reached. |
| class ScopedUnsupportedFeature { |
| public: |
| // For use by PDFiumEngineExports when there is no PDFiumEngine instance. |
| enum NoEngine { kNoEngine }; |
| |
| explicit ScopedUnsupportedFeature(PDFiumEngine* engine); |
| explicit ScopedUnsupportedFeature(NoEngine no_engine); |
| ScopedUnsupportedFeature(const ScopedUnsupportedFeature&) = delete; |
| ScopedUnsupportedFeature& operator=(const ScopedUnsupportedFeature&) = delete; |
| ~ScopedUnsupportedFeature(); |
| |
| private: |
| const bool saved_engine_available_; |
| PDFiumEngine* const saved_engine_; |
| }; |
| |
| } // namespace chrome_pdf |
| |
| #endif // PDF_PDFIUM_PDFIUM_UNSUPPORTED_FEATURES_H_ |