blob: 3b776f036d859ea97141801f6d3e5bb27b8a5ca6 [file] [log] [blame]
/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* Copyright (C) 2003, 2007, 2010 Apple Inc. All rights reserved.
*
* 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 "HTMLMarqueeElement.h"
#include "Attribute.h"
#include "CSSPropertyNames.h"
#include "CSSValueKeywords.h"
#include "ElementInlines.h"
#include "HTMLNames.h"
#include "HTMLParserIdioms.h"
#include "RenderLayer.h"
#include "RenderLayerScrollableArea.h"
#include "RenderMarquee.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(HTMLMarqueeElement);
using namespace HTMLNames;
inline HTMLMarqueeElement::HTMLMarqueeElement(const QualifiedName& tagName, Document& document)
: HTMLElement(tagName, document)
, ActiveDOMObject(document)
{
ASSERT(hasTagName(marqueeTag));
}
Ref<HTMLMarqueeElement> HTMLMarqueeElement::create(const QualifiedName& tagName, Document& document)
{
auto marqueeElement = adoptRef(*new HTMLMarqueeElement(tagName, document));
marqueeElement->suspendIfNeeded();
return marqueeElement;
}
int HTMLMarqueeElement::minimumDelay() const
{
if (!hasAttributeWithoutSynchronization(truespeedAttr)) {
// WinIE uses 60ms as the minimum delay by default.
return 60;
}
return 16; // Don't allow timers at < 16ms intervals to avoid CPU hogging: webkit.org/b/160609
}
bool HTMLMarqueeElement::hasPresentationalHintsForAttribute(const QualifiedName& name) const
{
if (name == widthAttr || name == heightAttr || name == bgcolorAttr || name == vspaceAttr || name == hspaceAttr || name == scrollamountAttr || name == scrolldelayAttr || name == loopAttr || name == behaviorAttr || name == directionAttr)
return true;
return HTMLElement::hasPresentationalHintsForAttribute(name);
}
void HTMLMarqueeElement::collectPresentationalHintsForAttribute(const QualifiedName& name, const AtomString& value, MutableStyleProperties& style)
{
if (name == widthAttr) {
if (!value.isEmpty())
addHTMLLengthToStyle(style, CSSPropertyWidth, value);
} else if (name == heightAttr) {
if (!value.isEmpty())
addHTMLLengthToStyle(style, CSSPropertyHeight, value);
} else if (name == bgcolorAttr) {
if (!value.isEmpty())
addHTMLColorToStyle(style, CSSPropertyBackgroundColor, value);
} else if (name == vspaceAttr) {
if (!value.isEmpty()) {
addHTMLLengthToStyle(style, CSSPropertyMarginTop, value);
addHTMLLengthToStyle(style, CSSPropertyMarginBottom, value);
}
} else if (name == hspaceAttr) {
if (!value.isEmpty()) {
addHTMLLengthToStyle(style, CSSPropertyMarginLeft, value);
addHTMLLengthToStyle(style, CSSPropertyMarginRight, value);
}
} else if (name == scrollamountAttr) {
if (!value.isEmpty())
addHTMLLengthToStyle(style, CSSPropertyWebkitMarqueeIncrement, value);
} else if (name == scrolldelayAttr) {
if (!value.isEmpty())
addHTMLNumberToStyle(style, CSSPropertyWebkitMarqueeSpeed, value);
} else if (name == loopAttr) {
if (!value.isEmpty()) {
if (value == "-1"_s || equalLettersIgnoringASCIICase(value, "infinite"_s))
addPropertyToPresentationalHintStyle(style, CSSPropertyWebkitMarqueeRepetition, CSSValueInfinite);
else
addHTMLNumberToStyle(style, CSSPropertyWebkitMarqueeRepetition, value);
}
} else if (name == behaviorAttr) {
if (!value.isEmpty())
addPropertyToPresentationalHintStyle(style, CSSPropertyWebkitMarqueeStyle, value);
} else if (name == directionAttr) {
if (!value.isEmpty())
addPropertyToPresentationalHintStyle(style, CSSPropertyWebkitMarqueeDirection, value);
} else
HTMLElement::collectPresentationalHintsForAttribute(name, value, style);
}
void HTMLMarqueeElement::start()
{
if (auto* renderer = renderMarquee())
renderer->start();
}
void HTMLMarqueeElement::stop()
{
if (auto* renderer = renderMarquee())
renderer->stop();
}
unsigned HTMLMarqueeElement::scrollAmount() const
{
return limitToOnlyHTMLNonNegative(attributeWithoutSynchronization(scrollamountAttr), RenderStyle::initialMarqueeIncrement().intValue());
}
void HTMLMarqueeElement::setScrollAmount(unsigned scrollAmount)
{
setUnsignedIntegralAttribute(scrollamountAttr, limitToOnlyHTMLNonNegative(scrollAmount, RenderStyle::initialMarqueeIncrement().intValue()));
}
unsigned HTMLMarqueeElement::scrollDelay() const
{
return limitToOnlyHTMLNonNegative(attributeWithoutSynchronization(scrolldelayAttr), RenderStyle::initialMarqueeSpeed());
}
void HTMLMarqueeElement::setScrollDelay(unsigned scrollDelay)
{
setUnsignedIntegralAttribute(scrolldelayAttr, limitToOnlyHTMLNonNegative(scrollDelay, RenderStyle::initialMarqueeSpeed()));
}
int HTMLMarqueeElement::loop() const
{
int loopValue = getIntegralAttribute(loopAttr);
return loopValue > 0 ? loopValue : -1;
}
ExceptionOr<void> HTMLMarqueeElement::setLoop(int loop)
{
if (loop <= 0 && loop != -1)
return Exception { IndexSizeError };
setIntegralAttribute(loopAttr, loop);
return { };
}
void HTMLMarqueeElement::suspend(ReasonForSuspension)
{
if (RenderMarquee* marqueeRenderer = renderMarquee())
marqueeRenderer->suspend();
}
void HTMLMarqueeElement::resume()
{
if (RenderMarquee* marqueeRenderer = renderMarquee())
marqueeRenderer->updateMarqueePosition();
}
RenderMarquee* HTMLMarqueeElement::renderMarquee() const
{
if (!renderer() || !renderer()->hasLayer())
return nullptr;
auto* scrollableArea = renderBoxModelObject()->layer()->scrollableArea();
if (!scrollableArea)
return nullptr;
return scrollableArea->marquee();
}
} // namespace WebCore