HTMLProgressElement.cpp [plain text]
#include "config.h"
#if ENABLE(PROGRESS_TAG)
#include "HTMLProgressElement.h"
#include "Attribute.h"
#include "EventNames.h"
#include "ExceptionCode.h"
#include "NodeRenderingContext.h"
#include "HTMLDivElement.h"
#include "HTMLNames.h"
#include "HTMLParserIdioms.h"
#include "ProgressShadowElement.h"
#include "RenderProgress.h"
#include "ShadowRoot.h"
#include <wtf/StdLibExtras.h>
namespace WebCore {
using namespace HTMLNames;
const double HTMLProgressElement::IndeterminatePosition = -1;
const double HTMLProgressElement::InvalidPosition = -2;
HTMLProgressElement::HTMLProgressElement(const QualifiedName& tagName, Document* document)
: LabelableElement(tagName, document)
{
ASSERT(hasTagName(progressTag));
}
HTMLProgressElement::~HTMLProgressElement()
{
}
PassRefPtr<HTMLProgressElement> HTMLProgressElement::create(const QualifiedName& tagName, Document* document)
{
RefPtr<HTMLProgressElement> progress = adoptRef(new HTMLProgressElement(tagName, document));
progress->createShadowSubtree();
return progress;
}
RenderObject* HTMLProgressElement::createRenderer(RenderArena* arena, RenderStyle*)
{
return new (arena) RenderProgress(this);
}
bool HTMLProgressElement::childShouldCreateRenderer(const NodeRenderingContext& childContext) const
{
return childContext.isOnUpperEncapsulationBoundary() && HTMLElement::childShouldCreateRenderer(childContext);
}
bool HTMLProgressElement::supportsFocus() const
{
return Node::supportsFocus() && !disabled();
}
void HTMLProgressElement::parseAttribute(Attribute* attribute)
{
if (attribute->name() == valueAttr)
didElementStateChange();
else if (attribute->name() == maxAttr)
didElementStateChange();
else
LabelableElement::parseAttribute(attribute);
}
void HTMLProgressElement::attach()
{
LabelableElement::attach();
didElementStateChange();
}
double HTMLProgressElement::value() const
{
double value;
bool ok = parseToDoubleForNumberType(fastGetAttribute(valueAttr), &value);
if (!ok || value < 0)
return 0;
return (value > max()) ? max() : value;
}
void HTMLProgressElement::setValue(double value, ExceptionCode& ec)
{
if (!isfinite(value)) {
ec = NOT_SUPPORTED_ERR;
return;
}
setAttribute(valueAttr, String::number(value >= 0 ? value : 0));
}
double HTMLProgressElement::max() const
{
double max;
bool ok = parseToDoubleForNumberType(getAttribute(maxAttr), &max);
if (!ok || max <= 0)
return 1;
return max;
}
void HTMLProgressElement::setMax(double max, ExceptionCode& ec)
{
if (!isfinite(max)) {
ec = NOT_SUPPORTED_ERR;
return;
}
setAttribute(maxAttr, String::number(max > 0 ? max : 1));
}
double HTMLProgressElement::position() const
{
if (!isDeterminate())
return HTMLProgressElement::IndeterminatePosition;
return value() / max();
}
bool HTMLProgressElement::isDeterminate() const
{
return fastHasAttribute(valueAttr);
}
void HTMLProgressElement::didElementStateChange()
{
m_value->setWidthPercentage(position() * 100);
if (renderer()) {
RenderProgress* render = toRenderProgress(renderer());
bool wasDeterminate = render->isDeterminate();
renderer()->updateFromElement();
if (wasDeterminate != isDeterminate())
setNeedsStyleRecalc();
}
}
void HTMLProgressElement::createShadowSubtree()
{
ASSERT(!hasShadowRoot());
RefPtr<ProgressBarElement> bar = ProgressBarElement::create(document());
m_value = ProgressValueElement::create(document());
bar->appendChild(m_value, ASSERT_NO_EXCEPTION);
RefPtr<ShadowRoot> root = ShadowRoot::create(this, ShadowRoot::CreatingUserAgentShadowRoot, ASSERT_NO_EXCEPTION);
root->appendChild(bar, ASSERT_NO_EXCEPTION);
}
} #endif