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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/. */
#ifndef nsHtml5DocumentBuilder_h
#define nsHtml5DocumentBuilder_h
#include "nsContentSink.h"
#include "nsHtml5DocumentMode.h"
#include "nsIDocument.h"
#include "nsIContent.h"
typedef nsIContent* nsIContentPtr;
enum eHtml5FlushState {
eNotFlushing = 0, // not flushing
eInFlush = 1, // the Flush() method is on the call stack
eInDocUpdate = 2, // inside an update batch on the document
eNotifying = 3 // flushing pending append notifications
};
class nsHtml5DocumentBuilder : public nsContentSink
{
public:
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(nsHtml5DocumentBuilder,
nsContentSink)
NS_DECL_ISUPPORTS_INHERITED
inline void HoldElement(already_AddRefed<nsIContent> aContent)
{
*(mOwnedElements.AppendElement()) = aContent;
}
nsresult Init(nsIDocument* aDoc, nsIURI* aURI,
nsISupports* aContainer, nsIChannel* aChannel);
// Getters and setters for fields from nsContentSink
nsIDocument* GetDocument()
{
return mDocument;
}
nsNodeInfoManager* GetNodeInfoManager()
{
return mNodeInfoManager;
}
/**
* Marks this parser as broken and tells the stream parser (if any) to
* terminate.
*
* @return aReason for convenience
*/
virtual nsresult MarkAsBroken(nsresult aReason);
/**
* Checks if this parser is broken. Returns a non-NS_OK (i.e. non-0)
* value if broken.
*/
inline nsresult IsBroken()
{
return mBroken;
}
inline void BeginDocUpdate()
{
NS_PRECONDITION(mFlushState == eInFlush, "Tried to double-open update.");
NS_PRECONDITION(mParser, "Started update without parser.");
mFlushState = eInDocUpdate;
mDocument->BeginUpdate(UPDATE_CONTENT_MODEL);
}
inline void EndDocUpdate()
{
NS_PRECONDITION(mFlushState != eNotifying, "mFlushState out of sync");
if (mFlushState == eInDocUpdate) {
mFlushState = eInFlush;
mDocument->EndUpdate(UPDATE_CONTENT_MODEL);
}
}
bool IsInDocUpdate()
{
return mFlushState == eInDocUpdate;
}
void SetDocumentCharsetAndSource(nsACString& aCharset, int32_t aCharsetSource);
/**
* Sets up style sheet load / parse
*/
void UpdateStyleSheet(nsIContent* aElement);
void SetDocumentMode(nsHtml5DocumentMode m);
void SetNodeInfoManager(nsNodeInfoManager* aManager)
{
mNodeInfoManager = aManager;
}
// nsContentSink methods
virtual void UpdateChildCounts() override;
virtual nsresult FlushTags() override;
protected:
explicit nsHtml5DocumentBuilder(bool aRunsToCompletion);
virtual ~nsHtml5DocumentBuilder();
protected:
AutoTArray<nsCOMPtr<nsIContent>, 32> mOwnedElements;
/**
* Non-NS_OK if this parser should refuse to process any more input.
* For example, the parser needs to be marked as broken if it drops some
* input due to a memory allocation failure. In such a case, the whole
* parser needs to be marked as broken, because some input has been lost
* and parsing more input could lead to a DOM where pieces of HTML source
* that weren't supposed to become scripts become scripts.
*
* Since NS_OK is actually 0, zeroing operator new takes care of
* initializing this.
*/
nsresult mBroken;
eHtml5FlushState mFlushState;
};
#endif // nsHtml5DocumentBuilder_h
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