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/*
* Copyright (C) 2012 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "core/dom/PseudoElement.h"
#include "core/dom/FirstLetterPseudoElement.h"
#include "core/inspector/InspectorInstrumentation.h"
#include "core/rendering/RenderObject.h"
#include "core/rendering/RenderQuote.h"
#include "core/rendering/style/ContentData.h"
namespace blink {
PassRefPtrWillBeRawPtr<PseudoElement> PseudoElement::create(Element* parent, PseudoId pseudoId)
{
return adoptRefWillBeNoop(new PseudoElement(parent, pseudoId));
}
const QualifiedName& pseudoElementTagName(PseudoId pseudoId)
{
switch (pseudoId) {
case AFTER: {
DEFINE_STATIC_LOCAL(QualifiedName, after, (nullAtom, "<pseudo:after>", nullAtom));
return after;
}
case BEFORE: {
DEFINE_STATIC_LOCAL(QualifiedName, before, (nullAtom, "<pseudo:before>", nullAtom));
return before;
}
case BACKDROP: {
DEFINE_STATIC_LOCAL(QualifiedName, backdrop, (nullAtom, "<pseudo:backdrop>", nullAtom));
return backdrop;
}
case FIRST_LETTER: {
DEFINE_STATIC_LOCAL(QualifiedName, firstLetter, (nullAtom, "<pseudo:first-letter>", nullAtom));
return firstLetter;
}
default: {
ASSERT_NOT_REACHED();
}
}
DEFINE_STATIC_LOCAL(QualifiedName, name, (nullAtom, "<pseudo>", nullAtom));
return name;
}
String PseudoElement::pseudoElementNameForEvents(PseudoId pseudoId)
{
DEFINE_STATIC_LOCAL(const String, after, ("::after"));
DEFINE_STATIC_LOCAL(const String, before, ("::before"));
switch (pseudoId) {
case AFTER:
return after;
case BEFORE:
return before;
default:
return emptyString();
}
}
PseudoElement::PseudoElement(Element* parent, PseudoId pseudoId)
: Element(pseudoElementTagName(pseudoId), &parent->document(), CreateElement)
, m_pseudoId(pseudoId)
{
ASSERT(pseudoId != NOPSEUDO);
setParentOrShadowHostNode(parent);
setHasCustomStyleCallbacks();
}
PassRefPtr<RenderStyle> PseudoElement::customStyleForRenderer()
{
return parentOrShadowHostElement()->renderer()->getCachedPseudoStyle(m_pseudoId);
}
void PseudoElement::dispose()
{
ASSERT(parentOrShadowHostElement());
InspectorInstrumentation::pseudoElementDestroyed(this);
ASSERT(!nextSibling());
ASSERT(!previousSibling());
detach();
RefPtrWillBeRawPtr<Element> parent = parentOrShadowHostElement();
setParentOrShadowHostNode(0);
removedFrom(parent.get());
}
void PseudoElement::attach(const AttachContext& context)
{
ASSERT(!renderer());
Element::attach(context);
RenderObject* renderer = this->renderer();
if (!renderer)
return;
RenderStyle* style = renderer->style();
if (style->styleType() != BEFORE && style->styleType() != AFTER)
return;
ASSERT(style->contentData());
for (const ContentData* content = style->contentData(); content; content = content->next()) {
RenderObject* child = content->createRenderer(document(), style);
if (renderer->isChildAllowed(child, style)) {
renderer->addChild(child);
if (child->isQuote())
toRenderQuote(child)->attachQuote();
} else
child->destroy();
}
}
bool PseudoElement::rendererIsNeeded(const RenderStyle& style)
{
return pseudoElementRendererIsNeeded(&style);
}
void PseudoElement::didRecalcStyle(StyleRecalcChange)
{
if (!renderer())
return;
// The renderers inside pseudo elements are anonymous so they don't get notified of recalcStyle and must have
// the style propagated downward manually similar to RenderObject::propagateStyleToAnonymousChildren.
RenderObject* renderer = this->renderer();
for (RenderObject* child = renderer->nextInPreOrder(renderer); child; child = child->nextInPreOrder(renderer)) {
// We only manage the style for the generated content items.
if (!child->isText() && !child->isQuote() && !child->isImage())
continue;
child->setPseudoStyle(renderer->style());
}
}
} // namespace
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