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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 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.
*
*/
#ifndef StyleResolverState_h
#define StyleResolverState_h
#include "core/CSSPropertyNames.h"
#include "core/CoreExport.h"
#include "core/animation/css/CSSAnimationUpdate.h"
#include "core/css/CSSPendingSubstitutionValue.h"
#include "core/css/CSSToLengthConversionData.h"
#include "core/css/resolver/CSSToStyleMap.h"
#include "core/css/resolver/ElementResolveContext.h"
#include "core/css/resolver/ElementStyleResources.h"
#include "core/css/resolver/FontBuilder.h"
#include "core/dom/Document.h"
#include "core/dom/Element.h"
#include "core/style/CachedUAStyle.h"
#include "core/style/ComputedStyle.h"
#include "core/style/StyleInheritedData.h"
#include <memory>
namespace blink {
class FontDescription;
class CORE_EXPORT StyleResolverState {
STACK_ALLOCATED();
WTF_MAKE_NONCOPYABLE(StyleResolverState);
public:
StyleResolverState(Document&,
const ElementResolveContext&,
const ComputedStyle* parentStyle);
StyleResolverState(Document&, Element*, const ComputedStyle* parentStyle = 0);
~StyleResolverState();
// In FontFaceSet and CanvasRenderingContext2D, we don't have an element to
// grab the document from. This is why we have to store the document
// separately.
Document& document() const { return *m_document; }
// These are all just pass-through methods to ElementResolveContext.
Element* element() const { return m_elementContext.element(); }
const ContainerNode* parentNode() const {
return m_elementContext.parentNode();
}
const ComputedStyle* rootElementStyle() const {
return m_elementContext.rootElementStyle();
}
EInsideLink elementLinkState() const {
return m_elementContext.elementLinkState();
}
bool distributedToInsertionPoint() const {
return m_elementContext.distributedToInsertionPoint();
}
const ElementResolveContext& elementContext() const {
return m_elementContext;
}
void setStyle(PassRefPtr<ComputedStyle>);
const ComputedStyle* style() const { return m_style.get(); }
ComputedStyle* style() { return m_style.get(); }
PassRefPtr<ComputedStyle> takeStyle() { return std::move(m_style); }
ComputedStyle& mutableStyleRef() const { return *m_style; }
const ComputedStyle& styleRef() const { return mutableStyleRef(); }
const CSSToLengthConversionData& cssToLengthConversionData() const {
return m_cssToLengthConversionData;
}
CSSToLengthConversionData fontSizeConversionData() const;
void setConversionFontSizes(
const CSSToLengthConversionData::FontSizes& fontSizes) {
m_cssToLengthConversionData.setFontSizes(fontSizes);
}
void setConversionZoom(float zoom) {
m_cssToLengthConversionData.setZoom(zoom);
}
CSSAnimationUpdate& animationUpdate() { return m_animationUpdate; }
bool isAnimationInterpolationMapReady() const {
return m_isAnimationInterpolationMapReady;
}
void setIsAnimationInterpolationMapReady() {
m_isAnimationInterpolationMapReady = true;
}
bool isAnimatingCustomProperties() const {
return m_isAnimatingCustomProperties;
}
void setIsAnimatingCustomProperties(bool value) {
m_isAnimatingCustomProperties = value;
}
void setParentStyle(PassRefPtr<ComputedStyle> parentStyle) {
m_parentStyle = parentStyle;
}
const ComputedStyle* parentStyle() const { return m_parentStyle.get(); }
ComputedStyle* parentStyle() { return m_parentStyle.get(); }
// FIXME: These are effectively side-channel "out parameters" for the various
// map functions. When we map from CSS to style objects we use this state
// object to track various meta-data about that mapping (e.g. if it's
// cache-able). We need to move this data off of StyleResolverState and
// closer to the objects it applies to. Possibly separating (immutable) inputs
// from (mutable) outputs.
void setApplyPropertyToRegularStyle(bool isApply) {
m_applyPropertyToRegularStyle = isApply;
}
void setApplyPropertyToVisitedLinkStyle(bool isApply) {
m_applyPropertyToVisitedLinkStyle = isApply;
}
bool applyPropertyToRegularStyle() const {
return m_applyPropertyToRegularStyle;
}
bool applyPropertyToVisitedLinkStyle() const {
return m_applyPropertyToVisitedLinkStyle;
}
void cacheUserAgentBorderAndBackground() {
// LayoutTheme only needs the cached style if it has an appearance,
// and constructing it is expensive so we avoid it if possible.
if (!style()->hasAppearance())
return;
m_cachedUAStyle = CachedUAStyle::create(style());
}
const CachedUAStyle* cachedUAStyle() const { return m_cachedUAStyle.get(); }
ElementStyleResources& elementStyleResources() {
return m_elementStyleResources;
}
void loadPendingResources();
// FIXME: Once styleImage can be made to not take a StyleResolverState
// this convenience function should be removed. As-is, without this, call
// sites are extremely verbose.
StyleImage* styleImage(CSSPropertyID propertyId, const CSSValue& value) {
return m_elementStyleResources.styleImage(propertyId, value);
}
FontBuilder& fontBuilder() { return m_fontBuilder; }
const FontBuilder& fontBuilder() const { return m_fontBuilder; }
// FIXME: These exist as a primitive way to track mutations to font-related
// properties on a ComputedStyle. As designed, these are very error-prone, as
// some callers set these directly on the ComputedStyle w/o telling us.
// Presumably we'll want to design a better wrapper around ComputedStyle for
// tracking these mutations and separate it from StyleResolverState.
const FontDescription& parentFontDescription() const {
return m_parentStyle->getFontDescription();
}
void setZoom(float f) {
if (m_style->setZoom(f))
m_fontBuilder.didChangeEffectiveZoom();
}
void setEffectiveZoom(float f) {
if (m_style->setEffectiveZoom(f))
m_fontBuilder.didChangeEffectiveZoom();
}
void setWritingMode(WritingMode newWritingMode) {
if (m_style->getWritingMode() == newWritingMode) {
return;
}
m_style->setWritingMode(newWritingMode);
m_fontBuilder.didChangeWritingMode();
}
void setTextOrientation(TextOrientation textOrientation) {
if (m_style->setTextOrientation(textOrientation))
m_fontBuilder.didChangeTextOrientation();
}
void setHasDirAutoAttribute(bool value) { m_hasDirAutoAttribute = value; }
bool hasDirAutoAttribute() const { return m_hasDirAutoAttribute; }
void setCustomPropertySetForApplyAtRule(const String&, StylePropertySet*);
StylePropertySet* customPropertySetForApplyAtRule(const String&);
HeapHashMap<CSSPropertyID, Member<const CSSValue>>&
parsedPropertiesForPendingSubstitutionCache(
const CSSPendingSubstitutionValue&) const;
private:
ElementResolveContext m_elementContext;
Member<Document> m_document;
// m_style is the primary output for each element's style resolve.
RefPtr<ComputedStyle> m_style;
CSSToLengthConversionData m_cssToLengthConversionData;
// m_parentStyle is not always just ElementResolveContext::parentStyle,
// so we keep it separate.
RefPtr<ComputedStyle> m_parentStyle;
CSSAnimationUpdate m_animationUpdate;
bool m_isAnimationInterpolationMapReady;
bool m_isAnimatingCustomProperties;
bool m_applyPropertyToRegularStyle;
bool m_applyPropertyToVisitedLinkStyle;
bool m_hasDirAutoAttribute;
FontBuilder m_fontBuilder;
std::unique_ptr<CachedUAStyle> m_cachedUAStyle;
ElementStyleResources m_elementStyleResources;
HeapHashMap<String, Member<StylePropertySet>>
m_customPropertySetsForApplyAtRule;
mutable HeapHashMap<
Member<const CSSPendingSubstitutionValue>,
Member<HeapHashMap<CSSPropertyID, Member<const CSSValue>>>>
m_parsedPropertiesForPendingSubstitutionCache;
};
} // namespace blink
#endif // StyleResolverState_h
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