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1、html_body_element.idl中接口定义：
（third_party\blink\renderer\core\html\html_body_element.idl）
/** Copyright (C) 2006, 2009, 2010 Apple Inc. All rights reserved.* Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>** This library is free software; you can redistribute it and/or* modify it under the terms of the GNU Library General Public* License as published by the Free Software Foundation; either* version 2 of the License, or (at your option) any later version.** This library is distributed in the hope that it will be useful,* but WITHOUT ANY WARRANTY; without even the implied warranty of* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU* Library General Public License for more details.** You should have received a copy of the GNU Library General Public License* along with this library; see the file COPYING.LIB. If not, write to* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,* Boston, MA 02110-1301, USA.*/// https://html.spec.whatwg.org/C/#the-body-element
[Exposed=Window,HTMLConstructor
] interface HTMLBodyElement : HTMLElement {// obsolete members// https://html.spec.whatwg.org/C/#HTMLBodyElement-partial[CEReactions, Reflect] attribute [LegacyNullToEmptyString] DOMString text;[CEReactions, Reflect] attribute [LegacyNullToEmptyString] DOMString link;[CEReactions, Reflect] attribute [LegacyNullToEmptyString] DOMString vLink;[CEReactions, Reflect] attribute [LegacyNullToEmptyString] DOMString aLink;[CEReactions, Reflect] attribute [LegacyNullToEmptyString] DOMString bgColor;[CEReactions, Reflect] attribute DOMString background;// TODO(foolip): These event handler attributes should be inherited from// HTMLElement (which includes GlobalEventHandlers), but have different// behavior. See https://www.w3.org/Bugs/Public/show_bug.cgi?id=28166attribute EventHandler onblur;attribute OnErrorEventHandler onerror;attribute EventHandler onfocus;attribute EventHandler onload;attribute EventHandler onresize;attribute EventHandler onscroll;// Compatibility// https://compat.spec.whatwg.org/#windoworientation-interface[RuntimeEnabled=OrientationEvent] attribute EventHandler onorientationchange;
};HTMLBodyElement includes WindowEventHandlers;
2、html_body_element.idl blink接口实现：
third_party\blink\renderer\core\html\html_body_element.h
third_party\blink\renderer\core\html\html_body_element.cc
#ifndef THIRD_PARTY_BLINK_RENDERER_CORE_HTML_HTML_BODY_ELEMENT_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_HTML_HTML_BODY_ELEMENT_H_#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/frame/window_event_handlers.h"
#include "third_party/blink/renderer/core/html/html_element.h"namespace blink {class Document;class CORE_EXPORT HTMLBodyElement final : public HTMLElement,public WindowEventHandlers {DEFINE_WRAPPERTYPEINFO();public:explicit HTMLBodyElement(Document&);~HTMLBodyElement() override;// HTMLElement overridebool IsHTMLBodyElement() const override { return true; }DEFINE_WINDOW_ATTRIBUTE_EVENT_LISTENER(blur, kBlur)DEFINE_WINDOW_ATTRIBUTE_EVENT_LISTENER(error, kError)DEFINE_WINDOW_ATTRIBUTE_EVENT_LISTENER(focus, kFocus)DEFINE_WINDOW_ATTRIBUTE_EVENT_LISTENER(load, kLoad)DEFINE_WINDOW_ATTRIBUTE_EVENT_LISTENER(resize, kResize)DEFINE_WINDOW_ATTRIBUTE_EVENT_LISTENER(scroll, kScroll)DEFINE_WINDOW_ATTRIBUTE_EVENT_LISTENER(orientationchange, kOrientationchange)private:void ParseAttribute(const AttributeModificationParams&) override;bool IsPresentationAttribute(const QualifiedName&) const override;void CollectStyleForPresentationAttribute(const QualifiedName&,const AtomicString&,MutableCSSPropertyValueSet*) override;InsertionNotificationRequest InsertedInto(ContainerNode&) override;void RemovedFrom(ContainerNode&) override;void DidNotifySubtreeInsertionsToDocument() override;bool IsURLAttribute(const Attribute&) const override;bool HasLegalLinkAttribute(const QualifiedName&) const override;Document& GetDocumentForWindowEventHandler() const override {return GetDocument();}
};} // namespace blink#endif // THIRD_PARTY_BLINK_RENDERER_CORE_HTML_HTML_BODY_ELEMENT_H_
3、html_body_element.idl 在 v8接口定义：
out\Debug\gen\third_party\blink\renderer\bindings\core\v8\v8_html_body_element.h
out\Debug\gen\third_party\blink\renderer\bindings\core\v8\v8_html_body_element.cc
void V8HTMLBodyElement::InstallUnconditionalProperties(v8::Isolate* isolate, const DOMWrapperWorld& world, v8::Local<v8::Template> instance_template, v8::Local<v8::Template> prototype_template, v8::Local<v8::Template> interface_template) {using bindings::IDLMemberInstaller;{static const IDLMemberInstaller::AttributeConfig kAttributeTable[] = {
{"text", TextAttributeGetCallback, TextAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"link", LinkAttributeGetCallback, LinkAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"vLink", VLinkAttributeGetCallback, VLinkAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"aLink", ALinkAttributeGetCallback, ALinkAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"bgColor", BgColorAttributeGetCallback, BgColorAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"background", BackgroundAttributeGetCallback, BackgroundAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"onblur", OnblurAttributeGetCallback, OnblurAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"onerror", OnerrorAttributeGetCallback, OnerrorAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"onfocus", OnfocusAttributeGetCallback, OnfocusAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"onload", OnloadAttributeGetCallback, OnloadAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"onresize", OnresizeAttributeGetCallback, OnresizeAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"onscroll", OnscrollAttributeGetCallback, OnscrollAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"onafterprint", OnafterprintAttributeGetCallback, OnafterprintAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"onbeforeprint", OnbeforeprintAttributeGetCallback, OnbeforeprintAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"onbeforeunload", OnbeforeunloadAttributeGetCallback, OnbeforeunloadAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"onhashchange", OnhashchangeAttributeGetCallback, OnhashchangeAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"onlanguagechange", OnlanguagechangeAttributeGetCallback, OnlanguagechangeAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"onmessage", OnmessageAttributeGetCallback, OnmessageAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"onmessageerror", OnmessageerrorAttributeGetCallback, OnmessageerrorAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"onoffline", OnofflineAttributeGetCallback, OnofflineAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"ononline", OnonlineAttributeGetCallback, OnonlineAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"onpagehide", OnpagehideAttributeGetCallback, OnpagehideAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"onpageshow", OnpageshowAttributeGetCallback, OnpageshowAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"onpopstate", OnpopstateAttributeGetCallback, OnpopstateAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"onrejectionhandled", OnrejectionhandledAttributeGetCallback, OnrejectionhandledAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"onstorage", OnstorageAttributeGetCallback, OnstorageAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"onunhandledrejection", OnunhandledrejectionAttributeGetCallback, OnunhandledrejectionAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
{"onunload", OnunloadAttributeGetCallback, OnunloadAttributeSetCallback, unsigned(v8::None), unsigned(IDLMemberInstaller::FlagLocation::kPrototype), unsigned(IDLMemberInstaller::FlagWorld::kAllWorlds), unsigned(IDLMemberInstaller::FlagReceiverCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(IDLMemberInstaller::FlagCrossOriginCheck::kCheck), unsigned(v8::SideEffectType::kHasNoSideEffect), unsigned(V8PrivateProperty::CachedAccessor::kNone)},
};
v8::Local<v8::FunctionTemplate> interface_function_template = interface_template.As<v8::FunctionTemplate>();
v8::Local<v8::Signature> signature = v8::Signature::New(isolate, interface_function_template);
IDLMemberInstaller::InstallAttributes(isolate, world, instance_template, prototype_template, interface_template, signature, kAttributeTable);
}
