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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/css/CSSSVGDocumentValue.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/rendering/style/CachedUAStyle.h"
#include "core/rendering/style/RenderStyle.h"
#include "core/rendering/style/StyleInheritedData.h"
namespace blink {
class CSSAnimationUpdate;
class FontDescription;
class StyleResolverState {
STACK_ALLOCATED();
WTF_MAKE_NONCOPYABLE(StyleResolverState);
public:
StyleResolverState(Document&, const ElementResolveContext&, RenderStyle* parentStyle);
StyleResolverState(Document&, Element*, RenderStyle* 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 RenderStyle* 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<RenderStyle> style)
{
// FIXME: Improve RAII of StyleResolverState to remove this function.
m_style = style;
m_cssToLengthConversionData = CSSToLengthConversionData(m_style.get(), rootElementStyle(), document().renderView(), m_style->effectiveZoom());
m_fontBuilder.setFontDescription(m_style->fontDescription());
}
const RenderStyle* style() const { return m_style.get(); }
RenderStyle* style() { return m_style.get(); }
PassRefPtr<RenderStyle> takeStyle() { return m_style.release(); }
const CSSToLengthConversionData& cssToLengthConversionData() const { return m_cssToLengthConversionData; }
void setConversionFontSizes(const CSSToLengthConversionData::FontSizes& fontSizes) { m_cssToLengthConversionData.setFontSizes(fontSizes); }
void setConversionZoom(float zoom) { m_cssToLengthConversionData.setZoom(zoom); }
void setAnimationUpdate(PassOwnPtrWillBeRawPtr<CSSAnimationUpdate>);
const CSSAnimationUpdate* animationUpdate() { return m_animationUpdate.get(); }
PassOwnPtrWillBeRawPtr<CSSAnimationUpdate> takeAnimationUpdate();
void setParentStyle(PassRefPtr<RenderStyle> parentStyle) { m_parentStyle = parentStyle; }
const RenderStyle* parentStyle() const { return m_parentStyle.get(); }
RenderStyle* 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()
{
// RenderTheme 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; }
// 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.
PassRefPtr<StyleImage> styleImage(CSSPropertyID propertyId, CSSValue* value)
{
return m_elementStyleResources.styleImage(document(), document().textLinkColors(), style()->color(), propertyId, value);
}
FontBuilder& fontBuilder() { return m_fontBuilder; }
// FIXME: These exist as a primitive way to track mutations to font-related properties
// on a RenderStyle. As designed, these are very error-prone, as some callers
// set these directly on the RenderStyle w/o telling us. Presumably we'll
// want to design a better wrapper around RenderStyle for tracking these mutations
// and separate it from StyleResolverState.
const FontDescription& parentFontDescription() { return m_parentStyle->fontDescription(); }
void setZoom(float f) { m_fontBuilder.didChangeFontParameters(m_style->setZoom(f)); }
void setEffectiveZoom(float f) { m_fontBuilder.didChangeFontParameters(m_style->setEffectiveZoom(f)); }
void setWritingMode(WritingMode writingMode) { m_fontBuilder.didChangeFontParameters(m_style->setWritingMode(writingMode)); }
void setTextOrientation(TextOrientation textOrientation) { m_fontBuilder.didChangeFontParameters(m_style->setTextOrientation(textOrientation)); }
private:
ElementResolveContext m_elementContext;
RawPtrWillBeMember<Document> m_document;
// m_style is the primary output for each element's style resolve.
RefPtr<RenderStyle> m_style;
CSSToLengthConversionData m_cssToLengthConversionData;
// m_parentStyle is not always just ElementResolveContext::parentStyle,
// so we keep it separate.
RefPtr<RenderStyle> m_parentStyle;
OwnPtrWillBeMember<CSSAnimationUpdate> m_animationUpdate;
bool m_applyPropertyToRegularStyle;
bool m_applyPropertyToVisitedLinkStyle;
FontBuilder m_fontBuilder;
OwnPtr<CachedUAStyle> m_cachedUAStyle;
ElementStyleResources m_elementStyleResources;
};
} // namespace blink
#endif // StyleResolverState_h
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