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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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 nsXULContentSink_h__
#define nsXULContentSink_h__
#include "mozilla/Attributes.h"
#include "nsIExpatSink.h"
#include "nsIXMLContentSink.h"
#include "nsNodeInfoManager.h"
#include "nsWeakPtr.h"
#include "nsXULElement.h"
#include "nsIDTD.h"
class nsIDocument;
class nsIScriptSecurityManager;
class nsAttrName;
class nsXULPrototypeDocument;
class nsXULPrototypeElement;
class nsXULPrototypeNode;
class XULContentSinkImpl final : public nsIXMLContentSink,
public nsIExpatSink
{
public:
XULContentSinkImpl();
// nsISupports
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_NSIEXPATSINK
NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(XULContentSinkImpl, nsIXMLContentSink)
// nsIContentSink
NS_IMETHOD WillParse(void) override { return NS_OK; }
NS_IMETHOD WillBuildModel(nsDTDMode aDTDMode) override;
NS_IMETHOD DidBuildModel(bool aTerminated) override;
NS_IMETHOD WillInterrupt(void) override;
NS_IMETHOD WillResume(void) override;
NS_IMETHOD SetParser(nsParserBase* aParser) override;
virtual void FlushPendingNotifications(mozFlushType aType) override { }
NS_IMETHOD SetDocumentCharset(nsACString& aCharset) override;
virtual nsISupports *GetTarget() override;
/**
* Initialize the content sink, giving it an nsIDocument object
* with which to communicate with the outside world, and an
* nsXULPrototypeDocument to build.
*/
nsresult Init(nsIDocument* aDocument, nsXULPrototypeDocument* aPrototype);
protected:
virtual ~XULContentSinkImpl();
// pseudo-constants
char16_t* mText;
int32_t mTextLength;
int32_t mTextSize;
bool mConstrainSize;
nsresult AddAttributes(const char16_t** aAttributes,
const uint32_t aAttrLen,
nsXULPrototypeElement* aElement);
nsresult OpenRoot(const char16_t** aAttributes,
const uint32_t aAttrLen,
mozilla::dom::NodeInfo *aNodeInfo);
nsresult OpenTag(const char16_t** aAttributes,
const uint32_t aAttrLen,
const uint32_t aLineNumber,
mozilla::dom::NodeInfo *aNodeInfo);
// If OpenScript returns NS_OK and after it returns our state is eInScript,
// that means that we created a prototype script and stuck it on
// mContextStack. If NS_OK is returned but the state is still
// eInDocumentElement then we didn't create a prototype script (e.g. the
// script had an unknown type), and the caller should create a prototype
// element.
nsresult OpenScript(const char16_t** aAttributes,
const uint32_t aLineNumber);
static bool IsDataInBuffer(char16_t* aBuffer, int32_t aLength);
// Text management
nsresult FlushText(bool aCreateTextNode = true);
nsresult AddText(const char16_t* aText, int32_t aLength);
RefPtr<nsNodeInfoManager> mNodeInfoManager;
nsresult NormalizeAttributeString(const char16_t *aExpatName,
nsAttrName &aName);
nsresult CreateElement(mozilla::dom::NodeInfo *aNodeInfo,
nsXULPrototypeElement** aResult);
public:
enum State { eInProlog, eInDocumentElement, eInScript, eInEpilog };
protected:
State mState;
// content stack management
class ContextStack {
protected:
struct Entry {
RefPtr<nsXULPrototypeNode> mNode;
// a LOT of nodes have children; preallocate for 8
nsPrototypeArray mChildren;
State mState;
Entry* mNext;
Entry() : mChildren(8) {}
};
Entry* mTop;
int32_t mDepth;
public:
ContextStack();
~ContextStack();
int32_t Depth() { return mDepth; }
nsresult Push(nsXULPrototypeNode* aNode, State aState);
nsresult Pop(State* aState);
nsresult GetTopNode(RefPtr<nsXULPrototypeNode>& aNode);
nsresult GetTopChildren(nsPrototypeArray** aChildren);
void Clear();
void Traverse(nsCycleCollectionTraversalCallback& aCallback);
};
friend class ContextStack;
ContextStack mContextStack;
nsWeakPtr mDocument; // [OWNER]
nsCOMPtr<nsIURI> mDocumentURL; // [OWNER]
RefPtr<nsXULPrototypeDocument> mPrototype; // [OWNER]
RefPtr<nsParserBase> mParser;
nsCOMPtr<nsIScriptSecurityManager> mSecMan;
};
#endif /* nsXULContentSink_h__ */
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