1 files changed, 111 insertions, 0 deletions
diff --git a/dom/html/HTMLDetailsElement.cpp b/dom/html/HTMLDetailsElement.cpp
new file mode 100644
index 000000000..ed20b50ca
--- /dev/null
+++ b/dom/html/HTMLDetailsElement.cpp
@@ -0,0 +1,111 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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"
+#include "mozilla/dom/HTMLUnknownElement.h"
+#include "mozilla/Preferences.h"
+
+// Expand NS_IMPL_NS_NEW_HTML_ELEMENT(Details) to add pref check.
+nsGenericHTMLElement*
+NS_NewHTMLDetailsElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
+                         mozilla::dom::FromParser aFromParser)
+{
+  if (!mozilla::dom::HTMLDetailsElement::IsDetailsEnabled()) {
+    return new mozilla::dom::HTMLUnknownElement(aNodeInfo);
+  }
+
+  return new mozilla::dom::HTMLDetailsElement(aNodeInfo);
+}
+
+namespace mozilla {
+namespace dom {
+
+/* static */ bool
+HTMLDetailsElement::IsDetailsEnabled()
+{
+  static bool isDetailsEnabled = false;
+  static bool added = false;
+
+  if (!added) {
+    Preferences::AddBoolVarCache(&isDetailsEnabled,
+                                 "dom.details_element.enabled");
+    added = true;
+  }
+
+  return isDetailsEnabled;
+}
+
+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 nsIAtom* 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, nsIAtom* aName,
+                                  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"), false);
+      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 HTMLDetailsElementBinding::Wrap(aCx, this, aGivenProto);
+}
+
+} // namespace dom
+} // namespace mozilla