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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/MozQueryInterface.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/MozQueryInterface.h')
-rw-r--r-- | dom/base/MozQueryInterface.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/dom/base/MozQueryInterface.h b/dom/base/MozQueryInterface.h new file mode 100644 index 0000000000..1dd3d9bfff --- /dev/null +++ b/dom/base/MozQueryInterface.h @@ -0,0 +1,54 @@ +/* -*- 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 mozilla_dom_MozQueryInterface +#define mozilla_dom_MozQueryInterface + +/** + * This class implements an optimized QueryInterface method for + * XPConnect-wrapped JS objects. + * + * For JavaScript callers, it behaves as an ordinary QueryInterface method, + * returning its `this` object or throwing depending on the interface it was + * passed. + * + * For native XPConnect callers, we bypass JSAPI entirely, and directly check + * whether the queried interface is in the interfaces list. + */ + +#include "mozilla/dom/BindingDeclarations.h" +#include "mozilla/dom/NonRefcountedDOMObject.h" +#include "nsID.h" + +namespace mozilla { +class ErrorResult; + +namespace dom { + +class MozQueryInterface final : public NonRefcountedDOMObject { + public: + explicit MozQueryInterface(nsTArray<nsIID>&& aInterfaces) + : mInterfaces(std::move(aInterfaces)) {} + + bool QueriesTo(const nsIID& aIID) const; + + void LegacyCall(JSContext* cx, JS::Handle<JS::Value> thisv, + JS::Handle<JS::Value> aIID, + JS::MutableHandle<JS::Value> aResult, ErrorResult& aRv) const; + + nsISupports* GetParentObject() const { return nullptr; } + + bool WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto, + JS::MutableHandle<JSObject*> aReflector); + + private: + nsTArray<nsIID> mInterfaces; +}; + +} // namespace dom +} // namespace mozilla + +#endif // mozilla_dom_MozQueryInterface |