HTMLDetailsElement.cpp [plain text]
#include "config.h"
#include "HTMLDetailsElement.h"
#if ENABLE(DETAILS)
#include "HTMLNames.h"
#include "HTMLSummaryElement.h"
#include "LocalizedStrings.h"
#include "MouseEvent.h"
#include "RenderDetails.h"
#include "ShadowContentElement.h"
#include "ShadowRoot.h"
#include "Text.h"
namespace WebCore {
using namespace HTMLNames;
class DetailsContentElement : public ShadowContentElement {
public:
static PassRefPtr<DetailsContentElement> create(Document*);
private:
DetailsContentElement(Document* document)
: ShadowContentElement(document)
{
}
virtual bool shouldInclude(Node*);
};
PassRefPtr<DetailsContentElement> DetailsContentElement::create(Document* document)
{
return adoptRef(new DetailsContentElement(document));
}
bool DetailsContentElement::shouldInclude(Node* node)
{
HTMLDetailsElement* details = static_cast<HTMLDetailsElement*>(shadowAncestorNode());
return details->mainSummary() != node;
}
class DetailsSummaryElement : public ShadowContentElement {
public:
static PassRefPtr<DetailsSummaryElement> create(Document*);
private:
DetailsSummaryElement(Document* document)
: ShadowContentElement(document)
{
}
virtual bool shouldInclude(Node*);
};
PassRefPtr<DetailsSummaryElement> DetailsSummaryElement::create(Document* document)
{
return adoptRef(new DetailsSummaryElement(document));
}
bool DetailsSummaryElement::shouldInclude(Node* node)
{
HTMLDetailsElement* details = static_cast<HTMLDetailsElement*>(shadowAncestorNode());
return details->mainSummary() == node;
}
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->detach();
oldSummary->attach();
}
if (m_mainSummary && refreshRenderer == RefreshRendererAllowed) {
m_mainSummary->detach();
m_mainSummary->attach();
}
}
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 (!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 (attached() && oldValue != m_isOpen) {
detach();
attach();
}
} 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