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/*
* Copyright (C) 2011 Andreas Kling (kling@webkit.org)
* Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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 "CSSValue.h"
#include "CSSAnimationTriggerScrollValue.h"
#include "CSSAspectRatioValue.h"
#include "CSSBorderImageSliceValue.h"
#include "CSSCalculationValue.h"
#include "CSSCanvasValue.h"
#include "CSSContentDistributionValue.h"
#include "CSSCrossfadeValue.h"
#include "CSSCursorImageValue.h"
#include "CSSCustomIdentValue.h"
#include "CSSCustomPropertyDeclaration.h"
#include "CSSCustomPropertyValue.h"
#include "CSSFilterImageValue.h"
#include "CSSFontFaceSrcValue.h"
#include "CSSFontFeatureValue.h"
#include "CSSFontValue.h"
#include "CSSFunctionValue.h"
#include "CSSGradientValue.h"
#include "CSSImageSetValue.h"
#include "CSSImageValue.h"
#include "CSSInheritedValue.h"
#include "CSSInitialValue.h"
#include "CSSLineBoxContainValue.h"
#include "CSSNamedImageValue.h"
#include "CSSPrimitiveValue.h"
#include "CSSProperty.h"
#include "CSSReflectValue.h"
#include "CSSShadowValue.h"
#include "CSSTimingFunctionValue.h"
#include "CSSUnicodeRangeValue.h"
#include "CSSUnsetValue.h"
#include "CSSValueList.h"
#include "CSSVariableDependentValue.h"
#include "CSSVariableReferenceValue.h"
#include "CSSVariableValue.h"
#include "SVGColor.h"
#include "SVGPaint.h"
#include "WebKitCSSFilterValue.h"
#include "WebKitCSSTransformValue.h"
#if ENABLE(CSS_GRID_LAYOUT)
#include "CSSGridAutoRepeatValue.h"
#include "CSSGridLineNamesValue.h"
#include "CSSGridTemplateAreasValue.h"
#endif
namespace WebCore {
struct SameSizeAsCSSValue : public RefCounted<SameSizeAsCSSValue> {
uint32_t bitfields;
};
COMPILE_ASSERT(sizeof(CSSValue) == sizeof(SameSizeAsCSSValue), CSS_value_should_stay_small);
class TextCloneCSSValue final : public CSSValue {
public:
static Ref<TextCloneCSSValue> create(ClassType classType, const String& text)
{
return adoptRef(*new TextCloneCSSValue(classType, text));
}
String cssText() const { return m_cssText; }
private:
TextCloneCSSValue(ClassType classType, const String& text)
: CSSValue(classType, /*isCSSOMSafe*/ true)
, m_cssText(text)
{
m_isTextClone = true;
}
String m_cssText;
};
bool CSSValue::isImplicitInitialValue() const
{
return m_classType == InitialClass && downcast<CSSInitialValue>(*this).isImplicit();
}
CSSValue::Type CSSValue::cssValueType() const
{
if (isInheritedValue())
return CSS_INHERIT;
if (isPrimitiveValue())
return CSS_PRIMITIVE_VALUE;
if (isValueList())
return CSS_VALUE_LIST;
if (isInitialValue())
return CSS_INITIAL;
if (isUnsetValue())
return CSS_UNSET;
if (isRevertValue())
return CSS_REVERT;
return CSS_CUSTOM;
}
void CSSValue::addSubresourceStyleURLs(ListHashSet<URL>& urls, const StyleSheetContents* styleSheet) const
{
// This should get called for internal instances only.
ASSERT(!isCSSOMSafe());
if (is<CSSPrimitiveValue>(*this))
downcast<CSSPrimitiveValue>(*this).addSubresourceStyleURLs(urls, styleSheet);
else if (is<CSSValueList>(*this))
downcast<CSSValueList>(*this).addSubresourceStyleURLs(urls, styleSheet);
else if (is<CSSFontFaceSrcValue>(*this))
downcast<CSSFontFaceSrcValue>(*this).addSubresourceStyleURLs(urls, styleSheet);
else if (is<CSSReflectValue>(*this))
downcast<CSSReflectValue>(*this).addSubresourceStyleURLs(urls, styleSheet);
}
bool CSSValue::traverseSubresources(const std::function<bool (const CachedResource&)>& handler) const
{
// This should get called for internal instances only.
ASSERT(!isCSSOMSafe());
if (is<CSSValueList>(*this))
return downcast<CSSValueList>(*this).traverseSubresources(handler);
if (is<CSSFontFaceSrcValue>(*this))
return downcast<CSSFontFaceSrcValue>(*this).traverseSubresources(handler);
if (is<CSSImageValue>(*this))
return downcast<CSSImageValue>(*this).traverseSubresources(handler);
if (is<CSSCrossfadeValue>(*this))
return downcast<CSSCrossfadeValue>(*this).traverseSubresources(handler);
if (is<CSSFilterImageValue>(*this))
return downcast<CSSFilterImageValue>(*this).traverseSubresources(handler);
if (is<CSSImageSetValue>(*this))
return downcast<CSSImageSetValue>(*this).traverseSubresources(handler);
return false;
}
template<class ChildClassType>
inline static bool compareCSSValues(const CSSValue& first, const CSSValue& second)
{
return static_cast<const ChildClassType&>(first).equals(static_cast<const ChildClassType&>(second));
}
bool CSSValue::equals(const CSSValue& other) const
{
if (m_isTextClone) {
ASSERT(isCSSOMSafe());
return static_cast<const TextCloneCSSValue*>(this)->cssText() == other.cssText();
}
if (m_classType == other.m_classType) {
switch (m_classType) {
case AspectRatioClass:
return compareCSSValues<CSSAspectRatioValue>(*this, other);
case BorderImageSliceClass:
return compareCSSValues<CSSBorderImageSliceValue>(*this, other);
case CanvasClass:
return compareCSSValues<CSSCanvasValue>(*this, other);
case NamedImageClass:
return compareCSSValues<CSSNamedImageValue>(*this, other);
case CursorImageClass:
return compareCSSValues<CSSCursorImageValue>(*this, other);
case FilterImageClass:
return compareCSSValues<CSSFilterImageValue>(*this, other);
case FontClass:
return compareCSSValues<CSSFontValue>(*this, other);
case FontFaceSrcClass:
return compareCSSValues<CSSFontFaceSrcValue>(*this, other);
case FontFeatureClass:
return compareCSSValues<CSSFontFeatureValue>(*this, other);
case FunctionClass:
return compareCSSValues<CSSFunctionValue>(*this, other);
case LinearGradientClass:
return compareCSSValues<CSSLinearGradientValue>(*this, other);
case RadialGradientClass:
return compareCSSValues<CSSRadialGradientValue>(*this, other);
case CrossfadeClass:
return compareCSSValues<CSSCrossfadeValue>(*this, other);
case ImageClass:
return compareCSSValues<CSSImageValue>(*this, other);
case InheritedClass:
return compareCSSValues<CSSInheritedValue>(*this, other);
case InitialClass:
return compareCSSValues<CSSInitialValue>(*this, other);
case UnsetClass:
return compareCSSValues<CSSUnsetValue>(*this, other);
case RevertClass:
return compareCSSValues<CSSRevertValue>(*this, other);
#if ENABLE(CSS_GRID_LAYOUT)
case GridAutoRepeatClass:
return compareCSSValues<CSSGridAutoRepeatValue>(*this, other);
case GridLineNamesClass:
return compareCSSValues<CSSGridLineNamesValue>(*this, other);
case GridTemplateAreasClass:
return compareCSSValues<CSSGridTemplateAreasValue>(*this, other);
#endif
case PrimitiveClass:
return compareCSSValues<CSSPrimitiveValue>(*this, other);
case ReflectClass:
return compareCSSValues<CSSReflectValue>(*this, other);
case ShadowClass:
return compareCSSValues<CSSShadowValue>(*this, other);
case CubicBezierTimingFunctionClass:
return compareCSSValues<CSSCubicBezierTimingFunctionValue>(*this, other);
case StepsTimingFunctionClass:
return compareCSSValues<CSSStepsTimingFunctionValue>(*this, other);
case SpringTimingFunctionClass:
return compareCSSValues<CSSSpringTimingFunctionValue>(*this, other);
case UnicodeRangeClass:
return compareCSSValues<CSSUnicodeRangeValue>(*this, other);
case ValueListClass:
return compareCSSValues<CSSValueList>(*this, other);
case WebKitCSSTransformClass:
return compareCSSValues<WebKitCSSTransformValue>(*this, other);
case LineBoxContainClass:
return compareCSSValues<CSSLineBoxContainValue>(*this, other);
case CalculationClass:
return compareCSSValues<CSSCalcValue>(*this, other);
case ImageSetClass:
return compareCSSValues<CSSImageSetValue>(*this, other);
case WebKitCSSFilterClass:
return compareCSSValues<WebKitCSSFilterValue>(*this, other);
case SVGColorClass:
return compareCSSValues<SVGColor>(*this, other);
case SVGPaintClass:
return compareCSSValues<SVGPaint>(*this, other);
#if ENABLE(CSS_ANIMATIONS_LEVEL_2)
case AnimationTriggerScrollClass:
return compareCSSValues<CSSAnimationTriggerScrollValue>(*this, other);
#endif
case CSSContentDistributionClass:
return compareCSSValues<CSSContentDistributionValue>(*this, other);
case CustomPropertyClass:
return compareCSSValues<CSSCustomPropertyValue>(*this, other);
case VariableDependentClass:
return compareCSSValues<CSSVariableDependentValue>(*this, other);
case VariableClass:
return compareCSSValues<CSSVariableValue>(*this, other);
default:
ASSERT_NOT_REACHED();
return false;
}
} else if (is<CSSValueList>(*this) && !is<CSSValueList>(other))
return downcast<CSSValueList>(*this).equals(other);
else if (!is<CSSValueList>(*this) && is<CSSValueList>(other))
return static_cast<const CSSValueList&>(other).equals(*this);
return false;
}
String CSSValue::cssText() const
{
if (m_isTextClone) {
ASSERT(isCSSOMSafe());
return static_cast<const TextCloneCSSValue*>(this)->cssText();
}
ASSERT(!isCSSOMSafe() || isSubtypeExposedToCSSOM());
switch (classType()) {
case AspectRatioClass:
return downcast<CSSAspectRatioValue>(*this).customCSSText();
case BorderImageSliceClass:
return downcast<CSSBorderImageSliceValue>(*this).customCSSText();
case CanvasClass:
return downcast<CSSCanvasValue>(*this).customCSSText();
case NamedImageClass:
return downcast<CSSNamedImageValue>(*this).customCSSText();
case CursorImageClass:
return downcast<CSSCursorImageValue>(*this).customCSSText();
case FilterImageClass:
return downcast<CSSFilterImageValue>(*this).customCSSText();
case FontClass:
return downcast<CSSFontValue>(*this).customCSSText();
case FontFaceSrcClass:
return downcast<CSSFontFaceSrcValue>(*this).customCSSText();
case FontFeatureClass:
return downcast<CSSFontFeatureValue>(*this).customCSSText();
case FunctionClass:
return downcast<CSSFunctionValue>(*this).customCSSText();
case LinearGradientClass:
return downcast<CSSLinearGradientValue>(*this).customCSSText();
case RadialGradientClass:
return downcast<CSSRadialGradientValue>(*this).customCSSText();
case CrossfadeClass:
return downcast<CSSCrossfadeValue>(*this).customCSSText();
case ImageClass:
return downcast<CSSImageValue>(*this).customCSSText();
case InheritedClass:
return downcast<CSSInheritedValue>(*this).customCSSText();
case InitialClass:
return downcast<CSSInitialValue>(*this).customCSSText();
case UnsetClass:
return downcast<CSSUnsetValue>(*this).customCSSText();
case RevertClass:
return downcast<CSSRevertValue>(*this).customCSSText();
#if ENABLE(CSS_GRID_LAYOUT)
case GridAutoRepeatClass:
return downcast<CSSGridAutoRepeatValue>(*this).customCSSText();
case GridLineNamesClass:
return downcast<CSSGridLineNamesValue>(*this).customCSSText();
case GridTemplateAreasClass:
return downcast<CSSGridTemplateAreasValue>(*this).customCSSText();
#endif
case PrimitiveClass:
return downcast<CSSPrimitiveValue>(*this).customCSSText();
case ReflectClass:
return downcast<CSSReflectValue>(*this).customCSSText();
case ShadowClass:
return downcast<CSSShadowValue>(*this).customCSSText();
case CubicBezierTimingFunctionClass:
return downcast<CSSCubicBezierTimingFunctionValue>(*this).customCSSText();
case StepsTimingFunctionClass:
return downcast<CSSStepsTimingFunctionValue>(*this).customCSSText();
case SpringTimingFunctionClass:
return downcast<CSSSpringTimingFunctionValue>(*this).customCSSText();
case UnicodeRangeClass:
return downcast<CSSUnicodeRangeValue>(*this).customCSSText();
case ValueListClass:
return downcast<CSSValueList>(*this).customCSSText();
case WebKitCSSTransformClass:
return downcast<WebKitCSSTransformValue>(*this).customCSSText();
case LineBoxContainClass:
return downcast<CSSLineBoxContainValue>(*this).customCSSText();
case CalculationClass:
return downcast<CSSCalcValue>(*this).customCSSText();
case ImageSetClass:
return downcast<CSSImageSetValue>(*this).customCSSText();
case WebKitCSSFilterClass:
return downcast<WebKitCSSFilterValue>(*this).customCSSText();
case SVGColorClass:
return downcast<SVGColor>(*this).customCSSText();
case SVGPaintClass:
return downcast<SVGPaint>(*this).customCSSText();
#if ENABLE(CSS_ANIMATIONS_LEVEL_2)
case AnimationTriggerScrollClass:
return downcast<CSSAnimationTriggerScrollValue>(*this).customCSSText();
#endif
case CSSContentDistributionClass:
return downcast<CSSContentDistributionValue>(*this).customCSSText();
case CustomPropertyClass:
return downcast<CSSCustomPropertyValue>(*this).customCSSText();
case VariableDependentClass:
return downcast<CSSVariableDependentValue>(*this).customCSSText();
case VariableClass:
return downcast<CSSVariableValue>(*this).customCSSText();
case CustomPropertyDeclarationClass:
return downcast<CSSCustomPropertyDeclaration>(*this).customCSSText();
case CustomIdentClass:
return downcast<CSSCustomIdentValue>(*this).customCSSText();
case VariableReferenceClass:
return downcast<CSSVariableReferenceValue>(*this).customCSSText();
}
ASSERT_NOT_REACHED();
return String();
}
void CSSValue::destroy()
{
if (m_isTextClone) {
ASSERT(isCSSOMSafe());
delete static_cast<TextCloneCSSValue*>(this);
return;
}
ASSERT(!isCSSOMSafe() || isSubtypeExposedToCSSOM());
switch (classType()) {
case AspectRatioClass:
delete downcast<CSSAspectRatioValue>(this);
return;
case BorderImageSliceClass:
delete downcast<CSSBorderImageSliceValue>(this);
return;
case CanvasClass:
delete downcast<CSSCanvasValue>(this);
return;
case NamedImageClass:
delete downcast<CSSNamedImageValue>(this);
return;
case CursorImageClass:
delete downcast<CSSCursorImageValue>(this);
return;
case FontClass:
delete downcast<CSSFontValue>(this);
return;
case FontFaceSrcClass:
delete downcast<CSSFontFaceSrcValue>(this);
return;
case FontFeatureClass:
delete downcast<CSSFontFeatureValue>(this);
return;
case FunctionClass:
delete downcast<CSSFunctionValue>(this);
return;
case LinearGradientClass:
delete downcast<CSSLinearGradientValue>(this);
return;
case RadialGradientClass:
delete downcast<CSSRadialGradientValue>(this);
return;
case CrossfadeClass:
delete downcast<CSSCrossfadeValue>(this);
return;
case ImageClass:
delete downcast<CSSImageValue>(this);
return;
case InheritedClass:
delete downcast<CSSInheritedValue>(this);
return;
case InitialClass:
delete downcast<CSSInitialValue>(this);
return;
case UnsetClass:
delete downcast<CSSUnsetValue>(this);
return;
case RevertClass:
delete downcast<CSSRevertValue>(this);
return;
#if ENABLE(CSS_GRID_LAYOUT)
case GridAutoRepeatClass:
delete downcast<CSSGridAutoRepeatValue>(this);
return;
case GridLineNamesClass:
delete downcast<CSSGridLineNamesValue>(this);
return;
case GridTemplateAreasClass:
delete downcast<CSSGridTemplateAreasValue>(this);
return;
#endif
case PrimitiveClass:
delete downcast<CSSPrimitiveValue>(this);
return;
case ReflectClass:
delete downcast<CSSReflectValue>(this);
return;
case ShadowClass:
delete downcast<CSSShadowValue>(this);
return;
case CubicBezierTimingFunctionClass:
delete downcast<CSSCubicBezierTimingFunctionValue>(this);
return;
case StepsTimingFunctionClass:
delete downcast<CSSStepsTimingFunctionValue>(this);
return;
case SpringTimingFunctionClass:
delete downcast<CSSSpringTimingFunctionValue>(this);
return;
case UnicodeRangeClass:
delete downcast<CSSUnicodeRangeValue>(this);
return;
case ValueListClass:
delete downcast<CSSValueList>(this);
return;
case WebKitCSSTransformClass:
delete downcast<WebKitCSSTransformValue>(this);
return;
case LineBoxContainClass:
delete downcast<CSSLineBoxContainValue>(this);
return;
case CalculationClass:
delete downcast<CSSCalcValue>(this);
return;
case ImageSetClass:
delete downcast<CSSImageSetValue>(this);
return;
case FilterImageClass:
delete downcast<CSSFilterImageValue>(this);
return;
case WebKitCSSFilterClass:
delete downcast<WebKitCSSFilterValue>(this);
return;
case SVGColorClass:
delete downcast<SVGColor>(this);
return;
case SVGPaintClass:
delete downcast<SVGPaint>(this);
return;
#if ENABLE(CSS_ANIMATIONS_LEVEL_2)
case AnimationTriggerScrollClass:
delete downcast<CSSAnimationTriggerScrollValue>(this);
return;
#endif
case CSSContentDistributionClass:
delete downcast<CSSContentDistributionValue>(this);
return;
case CustomPropertyClass:
delete downcast<CSSCustomPropertyValue>(this);
return;
case VariableDependentClass:
delete downcast<CSSVariableDependentValue>(this);
return;
case VariableClass:
delete downcast<CSSVariableValue>(this);
return;
case CustomPropertyDeclarationClass:
delete downcast<CSSCustomPropertyDeclaration>(this);
return;
case CustomIdentClass:
delete downcast<CSSCustomIdentValue>(this);
return;
case VariableReferenceClass:
delete downcast<CSSVariableReferenceValue>(this);
return;
}
ASSERT_NOT_REACHED();
}
RefPtr<CSSValue> CSSValue::cloneForCSSOM() const
{
switch (classType()) {
case PrimitiveClass:
return downcast<CSSPrimitiveValue>(*this).cloneForCSSOM();
case ValueListClass:
return downcast<CSSValueList>(*this).cloneForCSSOM();
case ImageClass:
case CursorImageClass:
return downcast<CSSImageValue>(*this).cloneForCSSOM();
case WebKitCSSFilterClass:
return downcast<WebKitCSSFilterValue>(*this).cloneForCSSOM();
case WebKitCSSTransformClass:
return downcast<WebKitCSSTransformValue>(*this).cloneForCSSOM();
case ImageSetClass:
return downcast<CSSImageSetValue>(*this).cloneForCSSOM();
case SVGColorClass:
return downcast<SVGColor>(*this).cloneForCSSOM();
case SVGPaintClass:
return downcast<SVGPaint>(*this).cloneForCSSOM();
default:
ASSERT(!isSubtypeExposedToCSSOM());
return TextCloneCSSValue::create(classType(), cssText());
}
}
bool CSSValue::isInvalidCustomPropertyValue() const
{
return isCustomPropertyValue() && downcast<CSSCustomPropertyValue>(*this).isInvalid();
}
bool CSSValue::treatAsInheritedValue(CSSPropertyID propertyID) const
{
return classType() == InheritedClass || (classType() == UnsetClass && CSSProperty::isInheritedProperty(propertyID));
}
bool CSSValue::treatAsInitialValue(CSSPropertyID propertyID) const
{
return classType() == InitialClass || (classType() == UnsetClass && !CSSProperty::isInheritedProperty(propertyID));
}
}