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// Copyright 2017 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#ifndef XFA_FXFA_CXFA_TEXTPARSER_H_
#define XFA_FXFA_CXFA_TEXTPARSER_H_
#include <map>
#include <memory>
#include "core/fxcrt/fx_string.h"
#include "core/fxcrt/fx_system.h"
#include "core/fxcrt/retain_ptr.h"
#include "core/fxge/fx_dib.h"
#include "third_party/base/optional.h"
#include "xfa/fxfa/fxfa_basic.h"
class CFGAS_GEFont;
class CFX_CSSComputedStyle;
class CFX_CSSStyleSelector;
class CFX_CSSStyleSheet;
class CFX_XMLNode;
class CXFA_FFDoc;
class CXFA_TextParseContext;
class CXFA_TextProvider;
class CXFA_TextTabstopsContext;
class CXFA_TextParser {
public:
CXFA_TextParser();
virtual ~CXFA_TextParser();
void Reset();
void DoParse(const CFX_XMLNode* pXMLContainer,
CXFA_TextProvider* pTextProvider);
RetainPtr<CFX_CSSComputedStyle> CreateRootStyle(
CXFA_TextProvider* pTextProvider);
RetainPtr<CFX_CSSComputedStyle> ComputeStyle(
const CFX_XMLNode* pXMLNode,
CFX_CSSComputedStyle* pParentStyle);
bool IsParsed() const { return m_bParsed; }
XFA_AttributeEnum GetVAlign(CXFA_TextProvider* pTextProvider) const;
float GetTabInterval(CFX_CSSComputedStyle* pStyle) const;
int32_t CountTabs(CFX_CSSComputedStyle* pStyle) const;
bool IsSpaceRun(CFX_CSSComputedStyle* pStyle) const;
bool GetTabstops(CFX_CSSComputedStyle* pStyle,
CXFA_TextTabstopsContext* pTabstopContext);
RetainPtr<CFGAS_GEFont> GetFont(CXFA_FFDoc* doc,
CXFA_TextProvider* pTextProvider,
CFX_CSSComputedStyle* pStyle) const;
float GetFontSize(CXFA_TextProvider* pTextProvider,
CFX_CSSComputedStyle* pStyle) const;
int32_t GetHorScale(CXFA_TextProvider* pTextProvider,
CFX_CSSComputedStyle* pStyle,
const CFX_XMLNode* pXMLNode) const;
int32_t GetVerScale(CXFA_TextProvider* pTextProvider,
CFX_CSSComputedStyle* pStyle) const;
void GetUnderline(CXFA_TextProvider* pTextProvider,
CFX_CSSComputedStyle* pStyle,
int32_t& iUnderline,
XFA_AttributeEnum& iPeriod) const;
void GetLinethrough(CXFA_TextProvider* pTextProvider,
CFX_CSSComputedStyle* pStyle,
int32_t& iLinethrough) const;
FX_ARGB GetColor(CXFA_TextProvider* pTextProvider,
CFX_CSSComputedStyle* pStyle) const;
float GetBaseline(CXFA_TextProvider* pTextProvider,
CFX_CSSComputedStyle* pStyle) const;
float GetLineHeight(CXFA_TextProvider* pTextProvider,
CFX_CSSComputedStyle* pStyle,
bool bFirst,
float fVerScale) const;
Optional<WideString> GetEmbeddedObj(const CXFA_TextProvider* pTextProvider,
const CFX_XMLNode* pXMLNode);
CXFA_TextParseContext* GetParseContextFromMap(const CFX_XMLNode* pXMLNode);
protected:
bool TagValidate(const WideString& str) const;
private:
class TagProvider {
public:
TagProvider();
~TagProvider();
WideString GetTagName() { return m_wsTagName; }
void SetTagName(const WideString& wsName) { m_wsTagName = wsName; }
void SetAttribute(const WideString& wsAttr, const WideString& wsValue) {
m_Attributes.insert({wsAttr, wsValue});
}
WideString GetAttribute(const WideString& wsAttr) {
return m_Attributes[wsAttr];
}
bool m_bTagAvailable;
bool m_bContent;
private:
WideString m_wsTagName;
std::map<WideString, WideString> m_Attributes;
};
// static
std::unique_ptr<TagProvider> ParseTagInfo(const CFX_XMLNode* pXMLNode);
void InitCSSData(CXFA_TextProvider* pTextProvider);
void ParseRichText(const CFX_XMLNode* pXMLNode,
CFX_CSSComputedStyle* pParentStyle);
std::unique_ptr<CFX_CSSStyleSheet> LoadDefaultSheetStyle();
RetainPtr<CFX_CSSComputedStyle> CreateStyle(
CFX_CSSComputedStyle* pParentStyle);
bool m_bParsed;
bool m_cssInitialized;
std::unique_ptr<CFX_CSSStyleSelector> m_pSelector;
std::map<const CFX_XMLNode*, std::unique_ptr<CXFA_TextParseContext>>
m_mapXMLNodeToParseContext;
};
#endif // XFA_FXFA_CXFA_TEXTPARSER_H_
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