gecko/content/base/public/nsNameSpaceManager.h
Reuben Morais f954df12ae Bug 458300 - Rename nsINameSpaceManager.h to nsNameSpaceManager.h. r=jst r=hsivonen
--HG--
rename : content/base/public/nsINameSpaceManager.h => content/base/public/nsNameSpaceManager.h
2014-02-27 20:04:46 -03:00

112 lines
3.1 KiB
C++

/* -*- 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 nsNameSpaceManager_h___
#define nsNameSpaceManager_h___
#include "nsDataHashtable.h"
#include "nsTArray.h"
#include "mozilla/StaticPtr.h"
class nsIAtom;
class nsAString;
#define kNameSpaceID_Unknown -1
// 0 is special at C++, so use a static const int32_t for
// kNameSpaceID_None to keep if from being cast to pointers
// Note that the XBL cache assumes (and asserts) that it can treat a
// single-byte value higher than kNameSpaceID_LastBuiltin specially.
static const int32_t kNameSpaceID_None = 0;
#define kNameSpaceID_XMLNS 1 // not really a namespace, but it needs to play the game
#define kNameSpaceID_XML 2
#define kNameSpaceID_XHTML 3
#define kNameSpaceID_XLink 4
#define kNameSpaceID_XSLT 5
#define kNameSpaceID_XBL 6
#define kNameSpaceID_MathML 7
#define kNameSpaceID_RDF 8
#define kNameSpaceID_XUL 9
#define kNameSpaceID_SVG 10
#define kNameSpaceID_LastBuiltin 10 // last 'built-in' namespace
class nsNameSpaceKey : public PLDHashEntryHdr
{
public:
typedef const nsAString* KeyType;
typedef const nsAString* KeyTypePointer;
nsNameSpaceKey(KeyTypePointer aKey) : mKey(aKey)
{
}
nsNameSpaceKey(const nsNameSpaceKey& toCopy) : mKey(toCopy.mKey)
{
}
KeyType GetKey() const
{
return mKey;
}
bool KeyEquals(KeyType aKey) const
{
return mKey->Equals(*aKey);
}
static KeyTypePointer KeyToPointer(KeyType aKey)
{
return aKey;
}
static PLDHashNumber HashKey(KeyTypePointer aKey) {
return mozilla::HashString(*aKey);
}
enum {
ALLOW_MEMMOVE = true
};
private:
const nsAString* mKey;
};
/**
* The Name Space Manager tracks the association between a NameSpace
* URI and the int32_t runtime id. Mappings between NameSpaces and
* NameSpace prefixes are managed by nsINameSpaces.
*
* All NameSpace URIs are stored in a global table so that IDs are
* consistent accross the app. NameSpace IDs are only consistent at runtime
* ie: they are not guaranteed to be consistent accross app sessions.
*
* The nsNameSpaceManager needs to have a live reference for as long as
* the NameSpace IDs are needed.
*
*/
class nsNameSpaceManager
{
public:
virtual ~nsNameSpaceManager() {}
virtual nsresult RegisterNameSpace(const nsAString& aURI,
int32_t& aNameSpaceID);
virtual nsresult GetNameSpaceURI(int32_t aNameSpaceID, nsAString& aURI);
virtual int32_t GetNameSpaceID(const nsAString& aURI);
virtual bool HasElementCreator(int32_t aNameSpaceID);
static nsNameSpaceManager* GetInstance();
private:
bool Init();
nsresult AddNameSpace(const nsAString& aURI, const int32_t aNameSpaceID);
nsDataHashtable<nsNameSpaceKey,int32_t> mURIToIDTable;
nsTArray< nsAutoPtr<nsString> > mURIArray;
static mozilla::StaticAutoPtr<nsNameSpaceManager> sInstance;
};
#endif // nsNameSpaceManager_h___