gecko-dev/dom/html/HTMLSummaryElement.cpp
Ting-Yu Lin 1e5d352993 Bug 591737 - Add pref for details and summary elements. r=bz
--HG--
extra : commitid : C40ecHqSxrO
extra : rebase_source : 937479989a52b57f3dec07a74dd9dad17ff69db7
2016-01-20 23:20:43 +08:00

100 lines
2.6 KiB
C++

/* -*- 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/HTMLSummaryElement.h"
#include "mozilla/dom/HTMLDetailsElement.h"
#include "mozilla/dom/HTMLElementBinding.h"
#include "mozilla/dom/HTMLUnknownElement.h"
#include "mozilla/MouseEvents.h"
#include "mozilla/Preferences.h"
// Expand NS_IMPL_NS_NEW_HTML_ELEMENT(Summary) to add pref check.
nsGenericHTMLElement*
NS_NewHTMLSummaryElement(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::HTMLSummaryElement(aNodeInfo);
}
namespace mozilla {
namespace dom {
HTMLSummaryElement::~HTMLSummaryElement()
{
}
NS_IMPL_ELEMENT_CLONE(HTMLSummaryElement)
nsresult
HTMLSummaryElement::PostHandleEvent(EventChainPostVisitor& aVisitor)
{
nsresult rv = NS_OK;
if (!aVisitor.mPresContext) {
return rv;
}
if (aVisitor.mEventStatus == nsEventStatus_eConsumeNoDefault) {
return rv;
}
auto toggleDetails = false;
auto* event = aVisitor.mEvent;
if (event->HasMouseEventMessage()) {
auto* mouseEvent = event->AsMouseEvent();
toggleDetails = mouseEvent->IsLeftClickEvent();
}
// Todo: Bug 634004: Implement toggle details by keyboard.
if (!toggleDetails || !IsMainSummary()) {
return rv;
}
auto* details = GetDetails();
MOZ_ASSERT(details, "Expected to find details since this is the main summary!");
// When dispatching a synthesized mouse click event to a details with
// 'display: none', both Chrome and Safari do not toggle the 'open' attribute.
// We follow them by checking whether details has a frame or not.
if (details->GetPrimaryFrame()) {
details->ToggleOpen();
aVisitor.mEventStatus = nsEventStatus_eConsumeNoDefault;
}
return rv;
}
bool
HTMLSummaryElement::IsMainSummary() const
{
HTMLDetailsElement* details = GetDetails();
if (!details) {
return false;
}
return details->GetFirstSummary() == this || IsRootOfNativeAnonymousSubtree();
}
HTMLDetailsElement*
HTMLSummaryElement::GetDetails() const
{
return HTMLDetailsElement::FromContentOrNull(GetParent());
}
JSObject*
HTMLSummaryElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return HTMLElementBinding::Wrap(aCx, this, aGivenProto);
}
} // namespace dom
} // namespace mozilla