gecko/content/base/public/nsXMLNameSpaceMap.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is
* IBM Corporation.
* Portions created by the Initial Developer are Copyright (C) 2005
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Brian Ryner <bryner@brianryner.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsXMLNameSpaceMap_h_
#define nsXMLNameSpaceMap_h_
#include "nsString.h"
#include "nsTArray.h"
#include "nsCOMPtr.h"
#include "nsIAtom.h"
struct nsNameSpaceEntry
{
nsNameSpaceEntry(nsIAtom *aPrefix)
: prefix(aPrefix) {}
nsCOMPtr<nsIAtom> prefix;
PRInt32 nameSpaceID;
};
/**
* nsXMLNameSpaceMap contains a set of prefixes which are mapped onto
* namespaces. It allows the set to be searched by prefix or by namespace ID.
*/
class nsXMLNameSpaceMap
{
public:
/**
* Allocates a new nsXMLNameSpaceMap (with new()) and if aForXML is
* true initializes it with the xmlns and xml namespaces.
*/
static NS_HIDDEN_(nsXMLNameSpaceMap*) Create(PRBool aForXML);
/**
* Add a prefix and its corresponding namespace ID to the map.
* Passing a null |aPrefix| corresponds to the default namespace, which may
* be set to something other than kNameSpaceID_None.
*/
NS_HIDDEN_(nsresult) AddPrefix(nsIAtom *aPrefix, PRInt32 aNameSpaceID);
/**
* Add a prefix and a namespace URI to the map. The URI will be converted
* to its corresponding namespace ID.
*/
NS_HIDDEN_(nsresult) AddPrefix(nsIAtom *aPrefix, nsString &aURI);
/* Remove a prefix from the map. */
NS_HIDDEN_(void) RemovePrefix(nsIAtom *aPrefix);
/*
* Returns the namespace ID for the given prefix, if it is in the map.
* If |aPrefix| is null and is not in the map, then a null namespace
* (kNameSpaceID_None) is returned. If |aPrefix| is non-null and is not in
* the map, then kNameSpaceID_Unknown is returned.
*/
NS_HIDDEN_(PRInt32) FindNameSpaceID(nsIAtom *aPrefix) const;
/**
* If the given namespace ID is in the map, then the first prefix which
* maps to that namespace is returned. Otherwise, null is returned.
*/
NS_HIDDEN_(nsIAtom*) FindPrefix(PRInt32 aNameSpaceID) const;
/* Removes all prefix mappings. */
NS_HIDDEN_(void) Clear();
~nsXMLNameSpaceMap() { Clear(); }
private:
nsXMLNameSpaceMap() NS_HIDDEN; // use Create() to create new instances
nsTArray<nsNameSpaceEntry> mNameSpaces;
};
#endif