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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /dom/base/nsNameSpaceManager.h | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/base/nsNameSpaceManager.h')
-rw-r--r-- | dom/base/nsNameSpaceManager.h | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/dom/base/nsNameSpaceManager.h b/dom/base/nsNameSpaceManager.h new file mode 100644 index 0000000000..aa4ec51104 --- /dev/null +++ b/dom/base/nsNameSpaceManager.h @@ -0,0 +1,83 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* 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 "nsTHashMap.h" +#include "nsHashKeys.h" +#include "nsAtom.h" +#include "nsStringFwd.h" +#include "nsTArray.h" + +#include "mozilla/StaticPtr.h" + +/** + * 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 final { + public: + NS_INLINE_DECL_REFCOUNTING(nsNameSpaceManager) + + nsresult RegisterNameSpace(const nsAString& aURI, int32_t& aNameSpaceID); + nsresult RegisterNameSpace(already_AddRefed<nsAtom> aURI, + int32_t& aNameSpaceID); + + nsresult GetNameSpaceURI(int32_t aNameSpaceID, nsAString& aURI); + + // Returns the atom for the namespace URI associated with the given ID. The + // ID must be within range and not be kNameSpaceID_None (i.e. zero); + // + // NB: The requirement of mapping from the first entry to the empty atom is + // necessary for Servo, though it can be removed if needed adding a branch in + // GeckoElement::get_namespace(). + nsAtom* NameSpaceURIAtom(int32_t aNameSpaceID) { + MOZ_ASSERT(aNameSpaceID > 0); + MOZ_ASSERT((int64_t)aNameSpaceID < (int64_t)mURIArray.Length()); + return mURIArray.ElementAt(aNameSpaceID); + } + + int32_t GetNameSpaceID(const nsAString& aURI, bool aInChromeDoc); + int32_t GetNameSpaceID(nsAtom* aURI, bool aInChromeDoc); + + static const char* GetNameSpaceDisplayName(uint32_t aNameSpaceID); + + bool HasElementCreator(int32_t aNameSpaceID); + + static nsNameSpaceManager* GetInstance(); + bool mMathMLDisabled; + bool mSVGDisabled; + + private: + static void PrefChanged(const char* aPref, void* aSelf); + void PrefChanged(const char* aPref); + + bool Init(); + nsresult AddNameSpace(already_AddRefed<nsAtom> aURI, + const int32_t aNameSpaceID); + nsresult AddDisabledNameSpace(already_AddRefed<nsAtom> aURI, + const int32_t aNameSpaceID); + ~nsNameSpaceManager() = default; + + nsTHashMap<nsRefPtrHashKey<nsAtom>, int32_t> mURIToIDTable; + nsTHashMap<nsRefPtrHashKey<nsAtom>, int32_t> mDisabledURIToIDTable; + nsTArray<RefPtr<nsAtom>> mURIArray; + + static mozilla::StaticRefPtr<nsNameSpaceManager> sInstance; +}; + +#endif // nsNameSpaceManager_h___ |