1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/base/public/nsNameSpaceManager.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,111 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef nsNameSpaceManager_h___
1.10 +#define nsNameSpaceManager_h___
1.11 +
1.12 +#include "nsDataHashtable.h"
1.13 +#include "nsTArray.h"
1.14 +
1.15 +#include "mozilla/StaticPtr.h"
1.16 +
1.17 +class nsIAtom;
1.18 +class nsAString;
1.19 +
1.20 +#define kNameSpaceID_Unknown -1
1.21 +// 0 is special at C++, so use a static const int32_t for
1.22 +// kNameSpaceID_None to keep if from being cast to pointers
1.23 +// Note that the XBL cache assumes (and asserts) that it can treat a
1.24 +// single-byte value higher than kNameSpaceID_LastBuiltin specially.
1.25 +static const int32_t kNameSpaceID_None = 0;
1.26 +#define kNameSpaceID_XMLNS 1 // not really a namespace, but it needs to play the game
1.27 +#define kNameSpaceID_XML 2
1.28 +#define kNameSpaceID_XHTML 3
1.29 +#define kNameSpaceID_XLink 4
1.30 +#define kNameSpaceID_XSLT 5
1.31 +#define kNameSpaceID_XBL 6
1.32 +#define kNameSpaceID_MathML 7
1.33 +#define kNameSpaceID_RDF 8
1.34 +#define kNameSpaceID_XUL 9
1.35 +#define kNameSpaceID_SVG 10
1.36 +#define kNameSpaceID_LastBuiltin 10 // last 'built-in' namespace
1.37 +
1.38 +class nsNameSpaceKey : public PLDHashEntryHdr
1.39 +{
1.40 +public:
1.41 + typedef const nsAString* KeyType;
1.42 + typedef const nsAString* KeyTypePointer;
1.43 +
1.44 + nsNameSpaceKey(KeyTypePointer aKey) : mKey(aKey)
1.45 + {
1.46 + }
1.47 + nsNameSpaceKey(const nsNameSpaceKey& toCopy) : mKey(toCopy.mKey)
1.48 + {
1.49 + }
1.50 +
1.51 + KeyType GetKey() const
1.52 + {
1.53 + return mKey;
1.54 + }
1.55 + bool KeyEquals(KeyType aKey) const
1.56 + {
1.57 + return mKey->Equals(*aKey);
1.58 + }
1.59 +
1.60 + static KeyTypePointer KeyToPointer(KeyType aKey)
1.61 + {
1.62 + return aKey;
1.63 + }
1.64 + static PLDHashNumber HashKey(KeyTypePointer aKey) {
1.65 + return mozilla::HashString(*aKey);
1.66 + }
1.67 +
1.68 + enum {
1.69 + ALLOW_MEMMOVE = true
1.70 + };
1.71 +
1.72 +private:
1.73 + const nsAString* mKey;
1.74 +};
1.75 +
1.76 +/**
1.77 + * The Name Space Manager tracks the association between a NameSpace
1.78 + * URI and the int32_t runtime id. Mappings between NameSpaces and
1.79 + * NameSpace prefixes are managed by nsINameSpaces.
1.80 + *
1.81 + * All NameSpace URIs are stored in a global table so that IDs are
1.82 + * consistent accross the app. NameSpace IDs are only consistent at runtime
1.83 + * ie: they are not guaranteed to be consistent accross app sessions.
1.84 + *
1.85 + * The nsNameSpaceManager needs to have a live reference for as long as
1.86 + * the NameSpace IDs are needed.
1.87 + *
1.88 + */
1.89 +
1.90 +class nsNameSpaceManager
1.91 +{
1.92 +public:
1.93 + virtual ~nsNameSpaceManager() {}
1.94 +
1.95 + virtual nsresult RegisterNameSpace(const nsAString& aURI,
1.96 + int32_t& aNameSpaceID);
1.97 +
1.98 + virtual nsresult GetNameSpaceURI(int32_t aNameSpaceID, nsAString& aURI);
1.99 + virtual int32_t GetNameSpaceID(const nsAString& aURI);
1.100 +
1.101 + virtual bool HasElementCreator(int32_t aNameSpaceID);
1.102 +
1.103 + static nsNameSpaceManager* GetInstance();
1.104 +private:
1.105 + bool Init();
1.106 + nsresult AddNameSpace(const nsAString& aURI, const int32_t aNameSpaceID);
1.107 +
1.108 + nsDataHashtable<nsNameSpaceKey,int32_t> mURIToIDTable;
1.109 + nsTArray< nsAutoPtr<nsString> > mURIArray;
1.110 +
1.111 + static mozilla::StaticAutoPtr<nsNameSpaceManager> sInstance;
1.112 +};
1.113 +
1.114 +#endif // nsNameSpaceManager_h___
