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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 "config.h"
#include "HTMLDetailsElement.h"
#if ENABLE(DETAILS)
#include "HTMLContentElement.h"
#include "HTMLNames.h"
#include "HTMLSummaryElement.h"
#include "LocalizedStrings.h"
#include "MouseEvent.h"
#include "RenderDetails.h"
#include "ShadowRoot.h"
#include "Text.h"
namespace WebCore {
using namespace HTMLNames;
static const AtomicString& summaryQuerySelector()
{
DEFINE_STATIC_LOCAL(AtomicString, selector, ("summary:first-of-type"));
return selector;
};
class DetailsContentElement : public HTMLContentElement {
public:
static PassRefPtr<DetailsContentElement> create(Document*);
private:
DetailsContentElement(Document* document)
: HTMLContentElement(HTMLNames::divTag, document)
{
}
};
PassRefPtr<DetailsContentElement> DetailsContentElement::create(Document* document)
{
return adoptRef(new DetailsContentElement(document));
}
class DetailsSummaryElement : public HTMLContentElement {
public:
static PassRefPtr<DetailsSummaryElement> create(Document*);
private:
DetailsSummaryElement(Document* document)
: HTMLContentElement(HTMLNames::divTag, document)
{
setSelect(summaryQuerySelector());
}
};
PassRefPtr<DetailsSummaryElement> DetailsSummaryElement::create(Document* document)
{
return adoptRef(new DetailsSummaryElement(document));
}
PassRefPtr<HTMLDetailsElement> HTMLDetailsElement::create(const QualifiedName& tagName, Document* document)
{
RefPtr<HTMLDetailsElement> result = adoptRef(new HTMLDetailsElement(tagName, document));
result->ensureShadowSubtreeOf(ForwardingSummary);
return result;
}
HTMLDetailsElement::HTMLDetailsElement(const QualifiedName& tagName, Document* document)
: HTMLElement(tagName, document)
, m_summaryType(NoSummary)
, m_mainSummary(0)
, m_isOpen(false)
{
ASSERT(hasTagName(detailsTag));
}
RenderObject* HTMLDetailsElement::createRenderer(RenderArena* arena, RenderStyle*)
{
return new (arena) RenderDetails(this);
}
void HTMLDetailsElement::ensureShadowSubtreeOf(SummaryType type)
{
if (type == m_summaryType)
return;
m_summaryType = type;
removeShadowRoot();
createShadowSubtree();
}
static Node* findSummaryFor(PassRefPtr<ContainerNode> container)
{
for (Node* child = container->firstChild(); child; child = child->nextSibling()) {
if (child->hasTagName(summaryTag))
return child;
}
return 0;
}
Node* HTMLDetailsElement::ensureMainSummary()
{
Node* summary = findSummaryFor(this);
if (summary) {
ensureShadowSubtreeOf(ForwardingSummary);
return summary;
}
ensureShadowSubtreeOf(DefaultSummary);
return findSummaryFor(shadowRoot());
}
void HTMLDetailsElement::refreshMainSummary(RefreshRenderer refreshRenderer)
{
RefPtr<Node> oldSummary = m_mainSummary;
m_mainSummary = ensureMainSummary();
if (oldSummary == m_mainSummary || !attached())
return;
if (oldSummary && oldSummary->parentNodeForRenderingAndStyle())
oldSummary->reattach();
if (m_mainSummary && refreshRenderer == RefreshRendererAllowed)
m_mainSummary->reattach();
}
void HTMLDetailsElement::createShadowSubtree()
{
ASSERT(!shadowRoot());
ExceptionCode ec = 0;
if (m_summaryType == DefaultSummary) {
RefPtr<HTMLSummaryElement> defaultSummary = HTMLSummaryElement::create(summaryTag, document());
defaultSummary->appendChild(Text::create(document(), defaultDetailsSummaryText()), ec);
ensureShadowRoot()->appendChild(defaultSummary, ec, true);
ensureShadowRoot()->appendChild(DetailsContentElement::create(document()), ec, true);
} else {
ASSERT(m_summaryType == ForwardingSummary);
ensureShadowRoot()->appendChild(DetailsSummaryElement::create(document()), ec, true);
ensureShadowRoot()->appendChild(DetailsContentElement::create(document()), ec, true);
}
}
void HTMLDetailsElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
{
HTMLElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
// If childCountDelta is less then zero and the main summary has changed it must be because previous main
// summary was removed. The new main summary was then inside the unrevealed content and needs to be
// reattached to create its renderer. If childCountDelta is not less then zero then a new <summary> element
// has been added and it will be attached without our help.
if (!changedByParser)
refreshMainSummary(childCountDelta < 0 ? RefreshRendererAllowed : RefreshRendererSupressed);
}
void HTMLDetailsElement::finishParsingChildren()
{
HTMLElement::finishParsingChildren();
refreshMainSummary(RefreshRendererAllowed);
}
void HTMLDetailsElement::parseMappedAttribute(Attribute* attr)
{
if (attr->name() == openAttr) {
bool oldValue = m_isOpen;
m_isOpen = !attr->value().isNull();
if (oldValue != m_isOpen)
reattachIfAttached();
} else
HTMLElement::parseMappedAttribute(attr);
}
bool HTMLDetailsElement::childShouldCreateRenderer(Node* child) const
{
return m_isOpen || child == m_mainSummary;
}
void HTMLDetailsElement::toggleOpen()
{
setAttribute(openAttr, m_isOpen ? nullAtom : emptyAtom);
}
}
#endif
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