gecko-dev/dom/html/HTMLDetailsElement.cpp

/* -*- 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/. */

#include "mozilla/dom/HTMLDetailsElement.h"

#include "mozilla/dom/HTMLDetailsElementBinding.h"

NS_IMPL_NS_NEW_HTML_ELEMENT(Details)

namespace mozilla {
namespace dom {

HTMLDetailsElement::~HTMLDetailsElement() {}

NS_IMPL_ELEMENT_CLONE(HTMLDetailsElement)

nsIContent* HTMLDetailsElement::GetFirstSummary() const {
  // XXX: Bug 1245032: Might want to cache the first summary element.
  for (nsIContent* child = nsINode::GetFirstChild(); child;
       child = child->GetNextSibling()) {
    if (child->IsHTMLElement(nsGkAtoms::summary)) {
      return child;
    }
  }
  return nullptr;
}

nsChangeHint HTMLDetailsElement::GetAttributeChangeHint(
    const nsAtom* aAttribute, int32_t aModType) const {
  nsChangeHint hint =
      nsGenericHTMLElement::GetAttributeChangeHint(aAttribute, aModType);
  if (aAttribute == nsGkAtoms::open) {
    hint |= nsChangeHint_ReconstructFrame;
  }
  return hint;
}

nsresult HTMLDetailsElement::BeforeSetAttr(int32_t aNameSpaceID, nsAtom* aName,
                                           const nsAttrValueOrString* aValue,
                                           bool aNotify) {
  if (aNameSpaceID == kNameSpaceID_None && aName == nsGkAtoms::open) {
    bool setOpen = aValue != nullptr;
    if (Open() != setOpen) {
      if (mToggleEventDispatcher) {
        mToggleEventDispatcher->Cancel();
      }
      // According to the html spec, a 'toggle' event is a simple event which
      // does not bubble.
      mToggleEventDispatcher = new AsyncEventDispatcher(
          this, NS_LITERAL_STRING("toggle"), CanBubble::eNo);
      mToggleEventDispatcher->PostDOMEvent();
    }
  }

  return nsGenericHTMLElement::BeforeSetAttr(aNameSpaceID, aName, aValue,
                                             aNotify);
}

void HTMLDetailsElement::AsyncEventRunning(AsyncEventDispatcher* aEvent) {
  if (mToggleEventDispatcher == aEvent) {
    mToggleEventDispatcher = nullptr;
  }
}

JSObject* HTMLDetailsElement::WrapNode(JSContext* aCx,
                                       JS::Handle<JSObject*> aGivenProto) {
  return HTMLDetailsElement_Binding::Wrap(aCx, this, aGivenProto);
}

}  // namespace dom
}  // namespace mozilla