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/*
* Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2007 Rob Buis <buis@kde.org>
* Copyright (C) 2007 Eric Seidel <eric@webkit.org>
* Copyright (C) 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"
#if ENABLE(SVG)
#include "SVGAElement.h"
#include "Attr.h"
#include "Attribute.h"
#include "Document.h"
#include "EventHandler.h"
#include "EventNames.h"
#include "Frame.h"
#include "FrameLoader.h"
#include "FrameLoaderTypes.h"
#include "HTMLAnchorElement.h"
#include "HTMLParserIdioms.h"
#include "KeyboardEvent.h"
#include "MouseEvent.h"
#include "PlatformMouseEvent.h"
#include "RenderSVGInline.h"
#include "RenderSVGTransformableContainer.h"
#include "ResourceRequest.h"
#include "SVGNames.h"
#include "SVGSMILElement.h"
#include "XLinkNames.h"
namespace WebCore {
inline SVGAElement::SVGAElement(const QualifiedName& tagName, Document* document)
: SVGStyledTransformableElement(tagName, document)
{
}
PassRefPtr<SVGAElement> SVGAElement::create(const QualifiedName& tagName, Document* document)
{
return adoptRef(new SVGAElement(tagName, document));
}
String SVGAElement::title() const
{
// If the xlink:title is set (non-empty string), use it.
const AtomicString& title = getAttribute(XLinkNames::titleAttr);
if (!title.isEmpty())
return title;
// Otherwise, use the title of this element.
return SVGStyledElement::title();
}
void SVGAElement::parseMappedAttribute(Attribute* attr)
{
if (attr->name() == SVGNames::targetAttr)
setTargetBaseValue(attr->value());
else {
if (SVGURIReference::parseMappedAttribute(attr))
return;
if (SVGTests::parseMappedAttribute(attr))
return;
if (SVGLangSpace::parseMappedAttribute(attr))
return;
if (SVGExternalResourcesRequired::parseMappedAttribute(attr))
return;
SVGStyledTransformableElement::parseMappedAttribute(attr);
}
}
void SVGAElement::svgAttributeChanged(const QualifiedName& attrName)
{
SVGStyledTransformableElement::svgAttributeChanged(attrName);
// Unlike other SVG*Element classes, SVGAElement only listens to SVGURIReference changes
// as none of the other properties changes the linking behaviour for our <a> element.
if (SVGURIReference::isKnownAttribute(attrName)) {
bool wasLink = isLink();
setIsLink(!href().isNull());
if (wasLink != isLink())
setNeedsStyleRecalc();
}
}
void SVGAElement::synchronizeProperty(const QualifiedName& attrName)
{
SVGStyledTransformableElement::synchronizeProperty(attrName);
if (attrName == anyQName()) {
synchronizeTarget();
synchronizeHref();
synchronizeExternalResourcesRequired();
return;
}
if (attrName == SVGNames::targetAttr)
synchronizeTarget();
else if (SVGURIReference::isKnownAttribute(attrName))
synchronizeHref();
else if (SVGExternalResourcesRequired::isKnownAttribute(attrName))
synchronizeExternalResourcesRequired();
}
RenderObject* SVGAElement::createRenderer(RenderArena* arena, RenderStyle*)
{
if (static_cast<SVGElement*>(parent())->isTextContent())
return new (arena) RenderSVGInline(this);
return new (arena) RenderSVGTransformableContainer(this);
}
void SVGAElement::defaultEventHandler(Event* event)
{
if (isLink()) {
if (focused() && isEnterKeyKeydownEvent(event)) {
event->setDefaultHandled();
dispatchSimulatedClick(event);
return;
}
if (isLinkClick(event)) {
String url = stripLeadingAndTrailingHTMLSpaces(href());
#if ENABLE(SVG_ANIMATION)
if (url[0] == '#') {
Element* targetElement = document()->getElementById(url.substring(1));
if (SVGSMILElement::isSMILElement(targetElement)) {
static_cast<SVGSMILElement*>(targetElement)->beginByLinkActivation();
event->setDefaultHandled();
return;
}
}
#endif
// FIXME: Why does the SVG anchor element have this special logic
// for middle click that the HTML anchor element does not have?
// Making a middle click open a link in a new window or tab is
// properly handled at the client level, not inside WebKit; this
// code should be deleted.
String target = isMiddleMouseButtonEvent(event) ? "_blank" : this->target();
// FIXME: It's not clear why setting target to "_self" is ever
// helpful.
if (target.isEmpty())
target = (getAttribute(XLinkNames::showAttr) == "new") ? "_blank" : "_self";
handleLinkClick(event, document(), url, target);
return;
}
}
SVGStyledTransformableElement::defaultEventHandler(event);
}
bool SVGAElement::supportsFocus() const
{
if (isContentEditable())
return SVGStyledTransformableElement::supportsFocus();
return true;
}
bool SVGAElement::isFocusable() const
{
if (renderer() && renderer()->absoluteClippedOverflowRect().isEmpty())
return false;
return SVGElement::isFocusable();
}
bool SVGAElement::isMouseFocusable() const
{
return false;
}
bool SVGAElement::isKeyboardFocusable(KeyboardEvent* event) const
{
if (!isFocusable())
return false;
if (!document()->frame())
return false;
return document()->frame()->eventHandler()->tabsToLinks(event);
}
bool SVGAElement::childShouldCreateRenderer(Node* child) const
{
// http://www.w3.org/2003/01/REC-SVG11-20030114-errata#linking-text-environment
// The 'a' element may contain any element that its parent may contain, except itself.
if (child->hasTagName(SVGNames::aTag))
return false;
if (parent() && parent()->isSVGElement())
return parent()->childShouldCreateRenderer(child);
return SVGElement::childShouldCreateRenderer(child);
}
} // namespace WebCore
#endif // ENABLE(SVG)
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