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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* nsIContentSerializer implementation that can be used with an
* nsIDocumentEncoder to convert an XHTML (not HTML!) DOM to an XHTML
* string that could be parsed into more or less the original DOM.
*/
#ifndef nsXHTMLContentSerializer_h__
#define nsXHTMLContentSerializer_h__
#include "mozilla/Attributes.h"
#include "nsXMLContentSerializer.h"
#include "nsString.h"
#include "nsTArray.h"
class nsIContent;
class nsAtom;
namespace mozilla {
class Encoding;
}
class nsXHTMLContentSerializer : public nsXMLContentSerializer {
public:
nsXHTMLContentSerializer();
virtual ~nsXHTMLContentSerializer();
NS_IMETHOD Init(uint32_t flags, uint32_t aWrapColumn,
const mozilla::Encoding* aEncoding, bool aIsCopying,
bool aRewriteEncodingDeclaration,
bool* aNeedsPreformatScanning, nsAString& aOutput) override;
NS_IMETHOD AppendText(nsIContent* aText, int32_t aStartOffset,
int32_t aEndOffset) override;
NS_IMETHOD AppendDocumentStart(mozilla::dom::Document* aDocument) override;
protected:
virtual bool CheckElementStart(mozilla::dom::Element* aElement,
bool& aForceFormat, nsAString& aStr,
nsresult& aResult) override;
[[nodiscard]] virtual bool AfterElementStart(nsIContent* aContent,
nsIContent* aOriginalElement,
nsAString& aStr) override;
virtual bool CheckElementEnd(mozilla::dom::Element* aContent,
mozilla::dom::Element* aOriginalElement,
bool& aForceFormat, nsAString& aStr) override;
virtual void AfterElementEnd(nsIContent* aContent, nsAString& aStr) override;
virtual bool LineBreakBeforeOpen(int32_t aNamespaceID,
nsAtom* aName) override;
virtual bool LineBreakAfterOpen(int32_t aNamespaceID, nsAtom* aName) override;
virtual bool LineBreakBeforeClose(int32_t aNamespaceID,
nsAtom* aName) override;
virtual bool LineBreakAfterClose(int32_t aNamespaceID,
nsAtom* aName) override;
bool HasLongLines(const nsString& text, int32_t& aLastNewlineOffset);
// functions to check if we enter in or leave from a preformated content
virtual void MaybeEnterInPreContent(nsIContent* aNode) override;
virtual void MaybeLeaveFromPreContent(nsIContent* aNode) override;
[[nodiscard]] virtual bool SerializeAttributes(
mozilla::dom::Element* aContent, mozilla::dom::Element* aOriginalElement,
nsAString& aTagPrefix, const nsAString& aTagNamespaceURI,
nsAtom* aTagName, nsAString& aStr, uint32_t aSkipAttr,
bool aAddNSAttr) override;
bool IsFirstChildOfOL(nsIContent* aElement);
[[nodiscard]] bool SerializeLIValueAttribute(nsIContent* aElement,
nsAString& aStr);
bool IsShorthandAttr(const nsAtom* aAttrName, const nsAtom* aElementName);
[[nodiscard]] virtual bool AppendAndTranslateEntities(
const nsAString& aStr, nsAString& aOutputStr) override;
private:
bool IsElementPreformatted(nsIContent* aNode);
protected:
/*
* isHTMLParser should be set to true by the HTML parser which inherits from
* this class. It avoids to redefine methods just for few changes.
*/
bool mIsHTMLSerializer;
bool mIsCopying; // Set to true only while copying
/*
* mDisableEntityEncoding is higher than 0 while the serializer is serializing
* the content of a element whose content is considerd CDATA by the
* serializer (such elements are 'script', 'style', 'noscript' and
* possibly others in XHTML) This doesn't have anything to do with if the
* element is defined as CDATA in the DTD, it simply means we'll
* output the content of the element without doing any entity encoding
* what so ever.
*/
int32_t mDisableEntityEncoding;
// This is to ensure that we only do meta tag fixups when dealing with
// whole documents.
bool mRewriteEncodingDeclaration;
// To keep track of First LI child of OL in selected range
bool mIsFirstChildOfOL;
// To keep track of startvalue of OL and first list item for nested lists
struct olState {
olState(int32_t aStart, bool aIsFirst)
: startVal(aStart), isFirstListItem(aIsFirst) {}
olState(const olState& aOlState) {
startVal = aOlState.startVal;
isFirstListItem = aOlState.isFirstListItem;
}
// the value of the start attribute in the OL
int32_t startVal;
// is true only before the serialization of the first li of an ol
// should be false for other li in the list
bool isFirstListItem;
};
// Stack to store one olState struct per <OL>.
AutoTArray<olState, 8> mOLStateStack;
bool HasNoChildren(nsIContent* aContent);
};
nsresult NS_NewXHTMLContentSerializer(nsIContentSerializer** aSerializer);
#endif
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