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166 lines
5.5 KiB
C++
166 lines
5.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* A class for handing out nodeinfos and ensuring sharing of them as needed.
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*/
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#ifndef nsNodeInfoManager_h___
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#define nsNodeInfoManager_h___
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#include "nsCOMPtr.h" // for already_AddRefed
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#include "plhash.h"
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class nsIAtom;
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class nsIDocument;
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class nsINodeInfo;
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class nsNodeInfo;
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class nsIPrincipal;
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class nsIURI;
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class nsDocument;
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class nsIDOMDocumentType;
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class nsIDOMDocument;
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class nsAString;
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class nsIDOMNamedNodeMap;
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class nsXULPrototypeDocument;
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class nsNodeInfoManager
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{
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public:
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nsNodeInfoManager();
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~nsNodeInfoManager();
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nsrefcnt AddRef(void);
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nsrefcnt Release(void);
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/**
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* Initialize the nodeinfo manager with a document.
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*/
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nsresult Init(nsIDocument *aDocument);
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/**
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* Release the reference to the document, this will be called when
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* the document is going away.
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*/
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void DropDocumentReference();
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/**
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* Methods for creating nodeinfo's from atoms and/or strings.
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*/
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nsresult GetNodeInfo(nsIAtom *aName, nsIAtom *aPrefix,
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PRInt32 aNamespaceID, nsINodeInfo** aNodeInfo);
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nsresult GetNodeInfo(const nsAString& aName, nsIAtom *aPrefix,
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PRInt32 aNamespaceID, nsINodeInfo** aNodeInfo);
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nsresult GetNodeInfo(const nsAString& aQualifiedName,
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const nsAString& aNamespaceURI,
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nsINodeInfo** aNodeInfo);
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/**
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* Returns the nodeinfo for text nodes. Can return null if OOM.
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*/
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already_AddRefed<nsINodeInfo> GetTextNodeInfo();
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/**
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* Returns the nodeinfo for comment nodes. Can return null if OOM.
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*/
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already_AddRefed<nsINodeInfo> GetCommentNodeInfo();
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/**
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* Returns the nodeinfo for the document node. Can return null if OOM.
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*/
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already_AddRefed<nsINodeInfo> GetDocumentNodeInfo();
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/**
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* Retrieve a pointer to the document that owns this node info
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* manager.
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*/
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nsIDocument* GetDocument() const
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{
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return mDocument;
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}
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/**
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* Gets the principal of the document this nodeinfo manager belongs to.
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*/
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nsIPrincipal *DocumentPrincipal() const {
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NS_ASSERTION(mPrincipal, "How'd that happen?");
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return mPrincipal;
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}
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void RemoveNodeInfo(nsNodeInfo *aNodeInfo);
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protected:
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friend class nsDocument;
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friend class nsXULPrototypeDocument;
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friend nsresult NS_NewDOMDocumentType(nsIDOMDocumentType** ,
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nsNodeInfoManager *,
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nsIPrincipal *,
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nsIAtom *,
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nsIDOMNamedNodeMap *,
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nsIDOMNamedNodeMap *,
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const nsAString& ,
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const nsAString& ,
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const nsAString& );
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/**
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* Sets the principal of the document this nodeinfo manager belongs to.
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*/
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void SetDocumentPrincipal(nsIPrincipal *aPrincipal);
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private:
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static PRIntn PR_CALLBACK NodeInfoInnerKeyCompare(const void *key1,
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const void *key2);
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static PLHashNumber PR_CALLBACK GetNodeInfoInnerHashValue(const void *key);
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nsAutoRefCnt mRefCnt;
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NS_DECL_OWNINGTHREAD
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PLHashTable *mNodeInfoHash;
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nsIDocument *mDocument; // WEAK
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nsIPrincipal *mPrincipal; // STRONG, but not nsCOMPtr to avoid include hell
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// while inlining DocumentPrincipal(). Never null
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// after Init() succeeds.
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nsCOMPtr<nsIPrincipal> mDefaultPrincipal; // Never null after Init() succeeds
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nsINodeInfo *mTextNodeInfo; // WEAK to avoid circular ownership
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nsINodeInfo *mCommentNodeInfo; // WEAK to avoid circular ownership
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nsINodeInfo *mDocumentNodeInfo; // WEAK to avoid circular ownership
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static PRUint32 gNodeManagerCount;
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};
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#endif /* nsNodeInfoManager_h___ */
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