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/*
* Copyright (C) 2010, 2011 Nokia Corporation and/or its subsidiary(-ies)
*
* 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.
*
*/
#include "core/html/HTMLDetailsElement.h"
#include "bindings/core/v8/ExceptionState.h"
#include "core/CSSPropertyNames.h"
#include "core/CSSValueKeywords.h"
#include "core/HTMLNames.h"
#include "core/dom/ElementTraversal.h"
#include "core/dom/TaskRunnerHelper.h"
#include "core/dom/Text.h"
#include "core/dom/shadow/ShadowRoot.h"
#include "core/events/Event.h"
#include "core/frame/UseCounter.h"
#include "core/html/HTMLContentElement.h"
#include "core/html/HTMLDivElement.h"
#include "core/html/HTMLSummaryElement.h"
#include "core/html/shadow/DetailsMarkerControl.h"
#include "core/html/shadow/ShadowElementNames.h"
#include "core/layout/LayoutBlockFlow.h"
#include "platform/text/PlatformLocale.h"
namespace blink {
using namespace HTMLNames;
class FirstSummarySelectFilter final : public HTMLContentSelectFilter {
public:
virtual ~FirstSummarySelectFilter() {}
static FirstSummarySelectFilter* create() {
return new FirstSummarySelectFilter();
}
bool canSelectNode(const HeapVector<Member<Node>, 32>& siblings,
int nth) const override {
if (!siblings[nth]->hasTagName(HTMLNames::summaryTag))
return false;
for (int i = nth - 1; i >= 0; --i) {
if (siblings[i]->hasTagName(HTMLNames::summaryTag))
return false;
}
return true;
}
DEFINE_INLINE_VIRTUAL_TRACE() { HTMLContentSelectFilter::trace(visitor); }
private:
FirstSummarySelectFilter() {}
};
HTMLDetailsElement* HTMLDetailsElement::create(Document& document) {
HTMLDetailsElement* details = new HTMLDetailsElement(document);
details->ensureUserAgentShadowRoot();
return details;
}
HTMLDetailsElement::HTMLDetailsElement(Document& document)
: HTMLElement(detailsTag, document), m_isOpen(false) {
UseCounter::count(document, UseCounter::DetailsElement);
}
HTMLDetailsElement::~HTMLDetailsElement() {}
void HTMLDetailsElement::dispatchPendingEvent() {
dispatchEvent(Event::create(EventTypeNames::toggle));
}
LayoutObject* HTMLDetailsElement::createLayoutObject(const ComputedStyle&) {
return new LayoutBlockFlow(this);
}
void HTMLDetailsElement::didAddUserAgentShadowRoot(ShadowRoot& root) {
HTMLSummaryElement* defaultSummary = HTMLSummaryElement::create(document());
defaultSummary->appendChild(Text::create(
document(), locale().queryString(WebLocalizedString::DetailsLabel)));
HTMLContentElement* summary = HTMLContentElement::create(
document(), FirstSummarySelectFilter::create());
summary->setIdAttribute(ShadowElementNames::detailsSummary());
summary->appendChild(defaultSummary);
root.appendChild(summary);
HTMLDivElement* content = HTMLDivElement::create(document());
content->setIdAttribute(ShadowElementNames::detailsContent());
content->appendChild(HTMLContentElement::create(document()));
content->setInlineStyleProperty(CSSPropertyDisplay, CSSValueNone);
root.appendChild(content);
}
Element* HTMLDetailsElement::findMainSummary() const {
if (HTMLSummaryElement* summary =
Traversal<HTMLSummaryElement>::firstChild(*this))
return summary;
HTMLContentElement* content =
toHTMLContentElementOrDie(userAgentShadowRoot()->firstChild());
DCHECK(content->firstChild());
CHECK(isHTMLSummaryElement(*content->firstChild()));
return toElement(content->firstChild());
}
void HTMLDetailsElement::parseAttribute(
const AttributeModificationParams& params) {
if (params.name == openAttr) {
bool oldValue = m_isOpen;
m_isOpen = !params.newValue.isNull();
if (m_isOpen == oldValue)
return;
// Dispatch toggle event asynchronously.
m_pendingEvent =
TaskRunnerHelper::get(TaskType::DOMManipulation, &document())
->postCancellableTask(
BLINK_FROM_HERE,
WTF::bind(&HTMLDetailsElement::dispatchPendingEvent,
wrapPersistent(this)));
Element* content = ensureUserAgentShadowRoot().getElementById(
ShadowElementNames::detailsContent());
DCHECK(content);
if (m_isOpen)
content->removeInlineStyleProperty(CSSPropertyDisplay);
else
content->setInlineStyleProperty(CSSPropertyDisplay, CSSValueNone);
// Invalidate the LayoutDetailsMarker in order to turn the arrow signifying
// if the details element is open or closed.
Element* summary = findMainSummary();
DCHECK(summary);
Element* control = toHTMLSummaryElement(summary)->markerControl();
if (control && control->layoutObject())
control->layoutObject()->setShouldDoFullPaintInvalidation();
return;
}
HTMLElement::parseAttribute(params);
}
void HTMLDetailsElement::toggleOpen() {
setAttribute(openAttr, m_isOpen ? nullAtom : emptyAtom);
}
bool HTMLDetailsElement::isInteractiveContent() const {
return true;
}
} // namespace blink
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