dom/html/HTMLDetailsElement.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "mozilla/dom/HTMLDetailsElement.h"
   8
   9 #include "mozilla/dom/HTMLDetailsElementBinding.h"
  10
  11 NS_IMPL_NS_NEW_HTML_ELEMENT(Details)
  12
  13 namespace mozilla {
  14 namespace dom {
  15
  16 HTMLDetailsElement::~HTMLDetailsElement()
  17 {
  18 }
  19
  20 NS_IMPL_ELEMENT_CLONE(HTMLDetailsElement)
  21
  22 nsIContent*
  23 HTMLDetailsElement::GetFirstSummary() const
  24 {
  25   // XXX: Bug 1245032: Might want to cache the first summary element.
  26   for (nsIContent* child = nsINode::GetFirstChild();
  27        child;
  28        child = child->GetNextSibling()) {
  29     if (child->IsHTMLElement(nsGkAtoms::summary)) {
  30       return child;
  31     }
  32   }
  33   return nullptr;
  34 }
  35
  36 nsChangeHint
  37 HTMLDetailsElement::GetAttributeChangeHint(const nsAtom* aAttribute,
  38                                            int32_t aModType) const
  39 {
  40   nsChangeHint hint =
  41     nsGenericHTMLElement::GetAttributeChangeHint(aAttribute, aModType);
  42   if (aAttribute == nsGkAtoms::open) {
  43     hint |= nsChangeHint_ReconstructFrame;
  44   }
  45   return hint;
  46 }
  47
  48 nsresult
  49 HTMLDetailsElement::BeforeSetAttr(int32_t aNameSpaceID, nsAtom* aName,
  50                                   const nsAttrValueOrString* aValue, bool aNotify)
  51 {
  52   if (aNameSpaceID == kNameSpaceID_None && aName == nsGkAtoms::open) {
  53     bool setOpen = aValue != nullptr;
  54     if (Open() != setOpen) {
  55       if (mToggleEventDispatcher) {
  56         mToggleEventDispatcher->Cancel();
  57       }
  58       // According to the html spec, a 'toggle' event is a simple event which
  59       // does not bubble.
  60       mToggleEventDispatcher =
  61         new AsyncEventDispatcher(this,
  62                                  NS_LITERAL_STRING("toggle"),
  63                                  CanBubble::eNo);
  64       mToggleEventDispatcher->PostDOMEvent();
  65     }
  66   }
  67
  68   return nsGenericHTMLElement::BeforeSetAttr(aNameSpaceID, aName, aValue,
  69                                              aNotify);
  70 }
  71
  72 void
  73 HTMLDetailsElement::AsyncEventRunning(AsyncEventDispatcher* aEvent)
  74 {
  75   if (mToggleEventDispatcher == aEvent) {
  76     mToggleEventDispatcher = nullptr;
  77   }
  78 }
  79
  80 JSObject*
  81 HTMLDetailsElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
  82 {
  83   return HTMLDetailsElement_Binding::Wrap(aCx, this, aGivenProto);
  84 }
  85
  86 } // namespace dom
  87 } // namespace mozilla