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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 "HTMLProgressElement.h"
#if ENABLE(PROGRESS_ELEMENT)
#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)
, m_value(0)
, m_hasAuthorShadowRoot(false)
{
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* style)
{
if (!style->hasAppearance() || hasAuthorShadowRoot())
return RenderObject::createObject(this, style);
return new (arena) RenderProgress(this);
}
bool HTMLProgressElement::childShouldCreateRenderer(const NodeRenderingContext& childContext) const
{
return childContext.isOnUpperEncapsulationBoundary() && HTMLElement::childShouldCreateRenderer(childContext);
}
RenderProgress* HTMLProgressElement::renderProgress() const
{
if (renderer() && renderer()->isProgress())
return static_cast<RenderProgress*>(renderer());
RenderObject* renderObject = userAgentShadowRoot()->firstChild()->renderer();
ASSERT(!renderObject || renderObject->isProgress());
return static_cast<RenderProgress*>(renderObject);
}
void HTMLProgressElement::willAddAuthorShadowRoot()
{
m_hasAuthorShadowRoot = true;
}
bool HTMLProgressElement::supportsFocus() const
{
return Node::supportsFocus() && !disabled();
}
void HTMLProgressElement::parseAttribute(const Attribute& attribute)
{
if (attribute.name() == valueAttr)
didElementStateChange();
else if (attribute.name() == maxAttr)
didElementStateChange();
else
LabelableElement::parseAttribute(attribute);
}
void HTMLProgressElement::attach()
{
LabelableElement::attach();
if (RenderProgress* render = renderProgress())
render->updateFromElement();
}
double HTMLProgressElement::value() const
{
double value = parseToDoubleForNumberType(fastGetAttribute(valueAttr));
return !isfinite(value) || value < 0 ? 0 : std::min(value, max());
}
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 = parseToDoubleForNumberType(getAttribute(maxAttr));
return !isfinite(max) || max <= 0 ? 1 : 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 (RenderProgress* render = renderProgress()) {
bool wasDeterminate = render->isDeterminate();
render->updateFromElement();
if (wasDeterminate != isDeterminate())
setNeedsStyleRecalc();
}
}
void HTMLProgressElement::createShadowSubtree()
{
ASSERT(!userAgentShadowRoot());
ASSERT(!m_value);
RefPtr<ShadowRoot> root = ShadowRoot::create(this, ShadowRoot::UserAgentShadowRoot, ASSERT_NO_EXCEPTION);
RefPtr<ProgressInnerElement> inner = ProgressInnerElement::create(document());
root->appendChild(inner);
RefPtr<ProgressBarElement> bar = ProgressBarElement::create(document());
RefPtr<ProgressValueElement> value = ProgressValueElement::create(document());
m_value = value.get();
m_value->setWidthPercentage(HTMLProgressElement::IndeterminatePosition * 100);
bar->appendChild(m_value, ASSERT_NO_EXCEPTION);
inner->appendChild(bar, ASSERT_NO_EXCEPTION);
}
} // namespace
#endif
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