Chromium html＜body＞对应c++接口定义

复制代码

<!DOCTYPE html>
<html>
  <head>
    <title>文档标题</title>
  </head>
  <body>
    <h1>这是一个标题</h1>
    <p>这是一个段落。</p>
  </body>
</html>

1、html_body_element.idl中接口定义：

（third_party\blink\renderer\core\html\html_body_element.idl）

cpp 复制代码

/*
 * 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=28166
    attribute 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

cpp 复制代码

#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 override
  bool 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

cpp 复制代码

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);
}