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| author | Tom Sepez <tsepez@chromium.org> | 2018-04-27 19:32:59 +0000 |
|---|---|---|
| committer | Chromium commit bot <commit-bot@chromium.org> | 2018-04-27 19:32:59 +0000 |
| commit | 862cbe46b7d7040e35733f5ed63839ee34223387 (patch) | |
| tree | 45895d00a62941d48311734c5244d0d1ecf34d56 /core/fpdfapi | |
| parent | 2b053ce82e921984ee191b26fe9a760ba1508a66 (diff) | |
| download | pdfium-862cbe46b7d7040e35733f5ed63839ee34223387.tar.xz | |
Avoid potential duplicate unique_ptr to CPDF_Document from CPDFXA_Context.
Should FPDFDocumentFromCPDFDocument() be called several times under
XFA, we may WrapUnique() the document several times. So cache a pointer
back from CPDF_Document to CPDFXFA_Context to avoid this.
Because of layering, introduce a placeholder type CPDF_Document::Extension.
This is actually the first step in some larger XFA ownership cleanup, but
makes a nice standalone CL around the one particular issue.
Change-Id: I4be326ddb1a5fae7339e6ed6745dd551b1374b53
Reviewed-on: https://pdfium-review.googlesource.com/31570
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>
Diffstat (limited to 'core/fpdfapi')
| -rw-r--r-- | core/fpdfapi/parser/cpdf_document.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/core/fpdfapi/parser/cpdf_document.h b/core/fpdfapi/parser/cpdf_document.h index d73dbc1df9..adf4eca75d 100644 --- a/core/fpdfapi/parser/cpdf_document.h +++ b/core/fpdfapi/parser/cpdf_document.h @@ -41,9 +41,15 @@ class JBig2_DocumentContext; class CPDF_Document : public CPDF_IndirectObjectHolder { public: + // Type from which the XFA extension can subclass itself. + class Extension {}; + explicit CPDF_Document(std::unique_ptr<CPDF_Parser> pParser); ~CPDF_Document() override; + Extension* GetExtension() const { return m_pExtension.Get(); } + void SetExtension(Extension* pExt) { m_pExtension = pExt; } + CPDF_Parser* GetParser() const { return m_pParser.get(); } const CPDF_Dictionary* GetRoot() const { return m_pRootDict; } CPDF_Dictionary* GetRoot() { return m_pRootDict; } @@ -153,6 +159,7 @@ class CPDF_Document : public CPDF_IndirectObjectHolder { std::unique_ptr<JBig2_DocumentContext> m_pCodecContext; std::unique_ptr<CPDF_LinkList> m_pLinksContext; std::vector<uint32_t> m_PageList; + UnownedPtr<Extension> m_pExtension; }; #endif // CORE_FPDFAPI_PARSER_CPDF_DOCUMENT_H_ |