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/*
* Copyright (C) 2010 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 "core/html/HTMLProgressElement.h"
#include "bindings/v8/ExceptionMessages.h"
#include "bindings/v8/ExceptionState.h"
#include "bindings/v8/ExceptionStatePlaceholder.h"
#include "core/HTMLNames.h"
#include "core/dom/ExceptionCode.h"
#include "core/dom/shadow/ShadowRoot.h"
#include "core/html/parser/HTMLParserIdioms.h"
#include "core/html/shadow/ProgressShadowElement.h"
#include "core/rendering/RenderProgress.h"
namespace WebCore {
using namespace HTMLNames;
const double HTMLProgressElement::IndeterminatePosition = -1;
const double HTMLProgressElement::InvalidPosition = -2;
HTMLProgressElement::HTMLProgressElement(Document& document)
: LabelableElement(progressTag, document)
, m_value(nullptr)
{
ScriptWrappable::init(this);
}
HTMLProgressElement::~HTMLProgressElement()
{
}
PassRefPtrWillBeRawPtr<HTMLProgressElement> HTMLProgressElement::create(Document& document)
{
RefPtrWillBeRawPtr<HTMLProgressElement> progress = adoptRefWillBeNoop(new HTMLProgressElement(document));
progress->ensureUserAgentShadowRoot();
return progress.release();
}
RenderObject* HTMLProgressElement::createRenderer(RenderStyle* style)
{
if (!style->hasAppearance() || hasAuthorShadowRoot())
return RenderObject::createObject(this, style);
return new RenderProgress(this);
}
RenderProgress* HTMLProgressElement::renderProgress() const
{
if (renderer() && renderer()->isProgress())
return toRenderProgress(renderer());
RenderObject* renderObject = userAgentShadowRoot()->firstChild()->renderer();
ASSERT_WITH_SECURITY_IMPLICATION(!renderObject || renderObject->isProgress());
return toRenderProgress(renderObject);
}
void HTMLProgressElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
if (name == valueAttr)
didElementStateChange();
else if (name == maxAttr)
didElementStateChange();
else
LabelableElement::parseAttribute(name, value);
}
void HTMLProgressElement::attach(const AttachContext& context)
{
LabelableElement::attach(context);
if (RenderProgress* render = renderProgress())
render->updateFromElement();
}
double HTMLProgressElement::value() const
{
double value = getFloatingPointAttribute(valueAttr);
// Otherwise, if the parsed value was greater than or equal to the maximum
// value, then the current value of the progress bar is the maximum value
// of the progress bar. Otherwise, if parsing the value attribute's value
// resulted in an error, or a number less than or equal to zero, then the
// current value of the progress bar is zero.
return !std::isfinite(value) || value < 0 ? 0 : std::min(value, max());
}
void HTMLProgressElement::setValue(double value)
{
setFloatingPointAttribute(valueAttr, std::max(value, 0.));
}
double HTMLProgressElement::max() const
{
double max = getFloatingPointAttribute(maxAttr);
// Otherwise, if the element has no max attribute, or if it has one but
// parsing it resulted in an error, or if the parsed value was less than or
// equal to zero, then the maximum value of the progress bar is 1.0.
return !std::isfinite(max) || max <= 0 ? 1 : max;
}
void HTMLProgressElement::setMax(double max)
{
// FIXME: The specification says we should ignore the input value if it is inferior or equal to 0.
setFloatingPointAttribute(maxAttr, 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 (RenderProgress* render = renderProgress()) {
bool wasDeterminate = render->isDeterminate();
render->updateFromElement();
if (wasDeterminate != isDeterminate())
didAffectSelector(AffectedSelectorIndeterminate);
}
}
void HTMLProgressElement::didAddUserAgentShadowRoot(ShadowRoot& root)
{
ASSERT(!m_value);
RefPtrWillBeRawPtr<ProgressInnerElement> inner = ProgressInnerElement::create(document());
inner->setShadowPseudoId(AtomicString("-webkit-progress-inner-element", AtomicString::ConstructFromLiteral));
root.appendChild(inner);
RefPtrWillBeRawPtr<ProgressBarElement> bar = ProgressBarElement::create(document());
bar->setShadowPseudoId(AtomicString("-webkit-progress-bar", AtomicString::ConstructFromLiteral));
RefPtrWillBeRawPtr<ProgressValueElement> value = ProgressValueElement::create(document());
m_value = value.get();
m_value->setShadowPseudoId(AtomicString("-webkit-progress-value", AtomicString::ConstructFromLiteral));
m_value->setWidthPercentage(HTMLProgressElement::IndeterminatePosition * 100);
bar->appendChild(m_value);
inner->appendChild(bar);
}
bool HTMLProgressElement::shouldAppearIndeterminate() const
{
return !isDeterminate();
}
void HTMLProgressElement::trace(Visitor* visitor)
{
visitor->trace(m_value);
LabelableElement::trace(visitor);
}
} // namespace
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