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/* -*- Mode: C++; tab-width: 8; 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 nsXMLNameSpaceMap_h_
#define nsXMLNameSpaceMap_h_
#include "nsString.h"
#include "nsTArray.h"
#include "nsCOMPtr.h"
#include "nsIAtom.h"
struct nsNameSpaceEntry
{
explicit nsNameSpaceEntry(nsIAtom* aPrefix)
: prefix(aPrefix) {}
nsCOMPtr<nsIAtom> prefix;
MOZ_INIT_OUTSIDE_CTOR int32_t 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 nsXMLNameSpaceMap* Create(bool 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.
*/
nsresult AddPrefix(nsIAtom *aPrefix, int32_t aNameSpaceID);
/**
* Add a prefix and a namespace URI to the map. The URI will be converted
* to its corresponding namespace ID.
*/
nsresult AddPrefix(nsIAtom *aPrefix, nsString &aURI);
/*
* 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.
*/
int32_t 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.
*/
nsIAtom* FindPrefix(int32_t aNameSpaceID) const;
/* Removes all prefix mappings. */
void Clear();
~nsXMLNameSpaceMap() { Clear(); }
private:
nsXMLNameSpaceMap(); // use Create() to create new instances
nsTArray<nsNameSpaceEntry> mNameSpaces;
};
#endif
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