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/*
* Copyright (C) 2007, 2008, 2009, 2013 Apple Inc.
* Copyright (C) 2010, 2011 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:
* 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 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 "EditingStyle.h"
#include "ApplyStyleCommand.h"
#include "CSSComputedStyleDeclaration.h"
#include "CSSFontFamily.h"
#include "CSSFontStyleValue.h"
#include "CSSParser.h"
#include "CSSRuleList.h"
#include "CSSStyleRule.h"
#include "CSSValueList.h"
#include "CSSValuePool.h"
#include "ColorSerialization.h"
#include "Editing.h"
#include "Editor.h"
#include "FontCache.h"
#include "FontCascade.h"
#include "Frame.h"
#include "HTMLFontElement.h"
#include "HTMLInterchange.h"
#include "HTMLNames.h"
#include "HTMLSpanElement.h"
#include "Node.h"
#include "NodeTraversal.h"
#include "QualifiedName.h"
#include "RenderElement.h"
#include "RenderStyle.h"
#include "StyleFontSizeFunctions.h"
#include "StyleProperties.h"
#include "StyleResolver.h"
#include "StyleRule.h"
#include "StyledElement.h"
#include "VisibleUnits.h"
#include <wtf/Optional.h>
namespace WebCore {
// Editing style properties must be preserved during editing operation.
// e.g. when a user inserts a new paragraph, all properties listed here must be copied to the new paragraph.
static const CSSPropertyID editingProperties[] = {
CSSPropertyCaretColor,
CSSPropertyColor,
CSSPropertyFontFamily,
CSSPropertyFontSize,
CSSPropertyFontStyle,
CSSPropertyFontVariantCaps,
CSSPropertyFontWeight,
CSSPropertyLetterSpacing,
CSSPropertyOrphans,
CSSPropertyTextAlign,
CSSPropertyTextIndent,
CSSPropertyTextTransform,
CSSPropertyWhiteSpace,
CSSPropertyWidows,
CSSPropertyWordSpacing,
#if ENABLE(TOUCH_EVENTS)
CSSPropertyWebkitTapHighlightColor,
#endif
CSSPropertyWebkitTextDecorationsInEffect,
CSSPropertyWebkitTextFillColor,
#if ENABLE(TEXT_AUTOSIZING)
CSSPropertyWebkitTextSizeAdjust,
#endif
CSSPropertyWebkitTextStrokeColor,
CSSPropertyWebkitTextStrokeWidth,
// Non-inheritable properties
CSSPropertyBackgroundColor,
CSSPropertyTextDecoration,
};
const unsigned numAllEditingProperties = WTF_ARRAY_LENGTH(editingProperties);
const unsigned numInheritableEditingProperties = numAllEditingProperties - 2;
enum EditingPropertiesToInclude { OnlyInheritableEditingProperties, AllEditingProperties };
template <class StyleDeclarationType>
static Ref<MutableStyleProperties> copyEditingProperties(StyleDeclarationType* style, EditingPropertiesToInclude type)
{
if (type == AllEditingProperties)
return style->copyPropertiesInSet(editingProperties, numAllEditingProperties);
return style->copyPropertiesInSet(editingProperties, numInheritableEditingProperties);
}
static inline bool isEditingProperty(int id)
{
for (auto& editingProperty : editingProperties) {
if (editingProperty == id)
return true;
}
return false;
}
static Ref<MutableStyleProperties> copyPropertiesFromComputedStyle(ComputedStyleExtractor& computedStyle, EditingStyle::PropertiesToInclude propertiesToInclude)
{
switch (propertiesToInclude) {
case EditingStyle::OnlyEditingInheritableProperties:
return copyEditingProperties(&computedStyle, OnlyInheritableEditingProperties);
case EditingStyle::EditingPropertiesInEffect:
return copyEditingProperties(&computedStyle, AllEditingProperties);
case EditingStyle::AllProperties:
break;
}
return computedStyle.copyProperties();
}
static Ref<MutableStyleProperties> copyPropertiesFromComputedStyle(Node* node, EditingStyle::PropertiesToInclude propertiesToInclude)
{
ComputedStyleExtractor computedStyle(node);
return copyPropertiesFromComputedStyle(computedStyle, propertiesToInclude);
}
static RefPtr<CSSValue> extractPropertyValue(const StyleProperties& style, CSSPropertyID propertyID)
{
return style.getPropertyCSSValue(propertyID);
}
static RefPtr<CSSValue> extractPropertyValue(ComputedStyleExtractor& computedStyle, CSSPropertyID propertyID)
{
return computedStyle.propertyValue(propertyID);
}
template<typename T>
int identifierForStyleProperty(T& style, CSSPropertyID propertyID)
{
RefPtr<CSSValue> value = extractPropertyValue(style, propertyID);
if (propertyID == CSSPropertyFontStyle && is<CSSFontStyleValue>(value) && downcast<CSSFontStyleValue>(value.get())->isItalicOrOblique())
return CSSValueItalic;
if (!is<CSSPrimitiveValue>(value))
return 0;
return downcast<CSSPrimitiveValue>(*value).valueID();
}
template<typename T> Ref<MutableStyleProperties> getPropertiesNotIn(StyleProperties& styleWithRedundantProperties, T& baseStyle);
enum LegacyFontSizeMode { AlwaysUseLegacyFontSize, UseLegacyFontSizeOnlyIfPixelValuesMatch };
static int legacyFontSizeFromCSSValue(Document&, CSSPrimitiveValue*, bool shouldUseFixedFontDefaultSize, LegacyFontSizeMode);
static bool hasTransparentBackgroundColor(StyleProperties*);
static RefPtr<CSSValue> backgroundColorInEffect(Node*);
class HTMLElementEquivalent {
WTF_MAKE_FAST_ALLOCATED;
public:
HTMLElementEquivalent(CSSPropertyID, CSSValueID primitiveValue, const QualifiedName& tagName);
virtual ~HTMLElementEquivalent() = default;
virtual bool matches(const Element& element) const { return !m_tagName || element.hasTagName(*m_tagName); }
virtual bool hasAttribute() const { return false; }
virtual bool propertyExistsInStyle(const EditingStyle& style) const { return style.m_mutableStyle && style.m_mutableStyle->getPropertyCSSValue(m_propertyID); }
virtual bool valueIsPresentInStyle(Element&, const EditingStyle&) const;
virtual void addToStyle(Element*, EditingStyle*) const;
protected:
HTMLElementEquivalent(CSSPropertyID);
HTMLElementEquivalent(CSSPropertyID, const QualifiedName& tagName);
const CSSPropertyID m_propertyID;
const RefPtr<CSSPrimitiveValue> m_primitiveValue;
const QualifiedName* m_tagName { nullptr }; // We can store a pointer because HTML tag names are const global.
};
HTMLElementEquivalent::HTMLElementEquivalent(CSSPropertyID id)
: m_propertyID(id)
{
}
HTMLElementEquivalent::HTMLElementEquivalent(CSSPropertyID id, const QualifiedName& tagName)
: m_propertyID(id)
, m_tagName(&tagName)
{
}
HTMLElementEquivalent::HTMLElementEquivalent(CSSPropertyID id, CSSValueID primitiveValue, const QualifiedName& tagName)
: m_propertyID(id)
, m_primitiveValue(CSSPrimitiveValue::createIdentifier(primitiveValue))
, m_tagName(&tagName)
{
ASSERT(primitiveValue != CSSValueInvalid);
}
bool HTMLElementEquivalent::valueIsPresentInStyle(Element& element, const EditingStyle& style) const
{
RefPtr<CSSValue> value = style.m_mutableStyle->getPropertyCSSValue(m_propertyID);
return matches(element) && is<CSSPrimitiveValue>(value) && downcast<CSSPrimitiveValue>(*value).valueID() == m_primitiveValue->valueID();
}
void HTMLElementEquivalent::addToStyle(Element*, EditingStyle* style) const
{
style->setProperty(m_propertyID, m_primitiveValue->cssText());
}
class HTMLTextDecorationEquivalent : public HTMLElementEquivalent {
public:
HTMLTextDecorationEquivalent(CSSValueID primitiveValue, const QualifiedName& tagName)
: HTMLElementEquivalent(CSSPropertyTextDecoration, primitiveValue, tagName)
, m_isUnderline(primitiveValue == CSSValueUnderline)
{
}
bool propertyExistsInStyle(const EditingStyle& style) const override
{
if (changeInStyle(style) != TextDecorationChange::None)
return true;
if (!style.m_mutableStyle)
return false;
auto& mutableStyle = *style.m_mutableStyle;
return mutableStyle.getPropertyCSSValue(CSSPropertyWebkitTextDecorationsInEffect)
|| mutableStyle.getPropertyCSSValue(CSSPropertyTextDecoration);
}
bool valueIsPresentInStyle(Element& element, const EditingStyle& style) const override
{
if (!matches(element))
return false;
auto change = changeInStyle(style);
if (change != TextDecorationChange::None)
return change == TextDecorationChange::Add;
RefPtr<CSSValue> styleValue = style.m_mutableStyle->getPropertyCSSValue(CSSPropertyWebkitTextDecorationsInEffect);
if (!styleValue)
styleValue = style.m_mutableStyle->getPropertyCSSValue(CSSPropertyTextDecoration);
return is<CSSValueList>(styleValue) && downcast<CSSValueList>(*styleValue).hasValue(m_primitiveValue.get());
}
private:
TextDecorationChange changeInStyle(const EditingStyle& style) const
{
return m_isUnderline ? style.underlineChange() : style.strikeThroughChange();
}
bool m_isUnderline;
};
class HTMLAttributeEquivalent : public HTMLElementEquivalent {
public:
HTMLAttributeEquivalent(CSSPropertyID, const QualifiedName& tagName, const QualifiedName& attrName);
HTMLAttributeEquivalent(CSSPropertyID, const QualifiedName& attrName);
bool matches(const Element& element) const override { return HTMLElementEquivalent::matches(element) && element.hasAttribute(m_attrName); }
bool hasAttribute() const override { return true; }
bool valueIsPresentInStyle(Element&, const EditingStyle&) const override;
void addToStyle(Element*, EditingStyle*) const override;
virtual RefPtr<CSSValue> attributeValueAsCSSValue(Element*) const;
inline const QualifiedName& attributeName() const { return m_attrName; }
protected:
const QualifiedName& m_attrName; // We can store a reference because HTML attribute names are const global.
};
HTMLAttributeEquivalent::HTMLAttributeEquivalent(CSSPropertyID id, const QualifiedName& tagName, const QualifiedName& attrName)
: HTMLElementEquivalent(id, tagName)
, m_attrName(attrName)
{
}
HTMLAttributeEquivalent::HTMLAttributeEquivalent(CSSPropertyID id, const QualifiedName& attrName)
: HTMLElementEquivalent(id)
, m_attrName(attrName)
{
}
bool HTMLAttributeEquivalent::valueIsPresentInStyle(Element& element, const EditingStyle& style) const
{
RefPtr<CSSValue> value = attributeValueAsCSSValue(&element);
RefPtr<CSSValue> styleValue = style.m_mutableStyle->getPropertyCSSValue(m_propertyID);
return compareCSSValuePtr(value, styleValue);
}
void HTMLAttributeEquivalent::addToStyle(Element* element, EditingStyle* style) const
{
if (RefPtr<CSSValue> value = attributeValueAsCSSValue(element))
style->setProperty(m_propertyID, value->cssText());
}
RefPtr<CSSValue> HTMLAttributeEquivalent::attributeValueAsCSSValue(Element* element) const
{
ASSERT(element);
const AtomString& value = element->getAttribute(m_attrName);
if (value.isNull())
return nullptr;
RefPtr<MutableStyleProperties> dummyStyle;
dummyStyle = MutableStyleProperties::create();
dummyStyle->setProperty(m_propertyID, value);
return dummyStyle->getPropertyCSSValue(m_propertyID);
}
class HTMLFontSizeEquivalent : public HTMLAttributeEquivalent {
public:
HTMLFontSizeEquivalent();
RefPtr<CSSValue> attributeValueAsCSSValue(Element*) const override;
};
HTMLFontSizeEquivalent::HTMLFontSizeEquivalent()
: HTMLAttributeEquivalent(CSSPropertyFontSize, HTMLNames::fontTag, HTMLNames::sizeAttr)
{
}
RefPtr<CSSValue> HTMLFontSizeEquivalent::attributeValueAsCSSValue(Element* element) const
{
ASSERT(element);
const AtomString& value = element->getAttribute(m_attrName);
if (value.isNull())
return nullptr;
CSSValueID size;
if (!HTMLFontElement::cssValueFromFontSizeNumber(value, size))
return nullptr;
return CSSPrimitiveValue::createIdentifier(size);
}
float EditingStyle::NoFontDelta = 0.0f;
EditingStyle::EditingStyle()
: m_shouldUseFixedDefaultFontSize(false)
, m_underlineChange(static_cast<unsigned>(TextDecorationChange::None))
, m_strikeThroughChange(static_cast<unsigned>(TextDecorationChange::None))
{
}
EditingStyle::EditingStyle(Node* node, PropertiesToInclude propertiesToInclude)
: EditingStyle()
{
init(node, propertiesToInclude);
}
EditingStyle::EditingStyle(const Position& position, PropertiesToInclude propertiesToInclude)
: EditingStyle()
{
init(position.deprecatedNode(), propertiesToInclude);
}
EditingStyle::EditingStyle(const CSSStyleDeclaration* style)
: EditingStyle()
{
if (style)
m_mutableStyle = style->copyProperties();
extractFontSizeDelta();
}
EditingStyle::EditingStyle(const StyleProperties* style)
: EditingStyle()
{
if (style)
m_mutableStyle = style->mutableCopy();
extractFontSizeDelta();
}
EditingStyle::EditingStyle(CSSPropertyID propertyID, const String& value)
: EditingStyle()
{
setProperty(propertyID, value);
extractFontSizeDelta();
}
EditingStyle::EditingStyle(CSSPropertyID propertyID, CSSValueID value)
: EditingStyle()
{
m_mutableStyle = MutableStyleProperties::create();
m_mutableStyle->setProperty(propertyID, value);
extractFontSizeDelta();
}
EditingStyle::~EditingStyle() = default;
static Color cssValueToColor(CSSValue* colorValue)
{
if (!is<CSSPrimitiveValue>(colorValue))
return Color::transparent;
CSSPrimitiveValue& primitiveColor = downcast<CSSPrimitiveValue>(*colorValue);
if (primitiveColor.isRGBColor())
return primitiveColor.color();
return CSSParser::parseColor(colorValue->cssText());
}
template<typename T>
static inline Color textColorFromStyle(T& style)
{
return cssValueToColor(extractPropertyValue(style, CSSPropertyColor).get());
}
template<typename T>
static inline Color caretColorFromStyle(T& style)
{
return cssValueToColor(extractPropertyValue(style, CSSPropertyCaretColor).get());
}
template<typename T>
static inline Color backgroundColorFromStyle(T& style)
{
return cssValueToColor(extractPropertyValue(style, CSSPropertyBackgroundColor).get());
}
static inline Color rgbaBackgroundColorInEffect(Node* node)
{
return cssValueToColor(backgroundColorInEffect(node).get());
}
static int textAlignResolvingStartAndEnd(int textAlign, int direction)
{
switch (textAlign) {
case CSSValueCenter:
case CSSValueWebkitCenter:
return CSSValueCenter;
case CSSValueJustify:
return CSSValueJustify;
case CSSValueLeft:
case CSSValueWebkitLeft:
return CSSValueLeft;
case CSSValueRight:
case CSSValueWebkitRight:
return CSSValueRight;
case CSSValueStart:
return direction != CSSValueRtl ? CSSValueLeft : CSSValueRight;
case CSSValueEnd:
return direction == CSSValueRtl ? CSSValueRight : CSSValueLeft;
}
return CSSValueInvalid;
}
template<typename T>
static int textAlignResolvingStartAndEnd(T& style)
{
return textAlignResolvingStartAndEnd(identifierForStyleProperty(style, CSSPropertyTextAlign), identifierForStyleProperty(style, CSSPropertyDirection));
}
void EditingStyle::init(Node* node, PropertiesToInclude propertiesToInclude)
{
if (isTabSpanTextNode(node))
node = tabSpanNode(node)->parentNode();
else if (isTabSpanNode(node))
node = node->parentNode();
ComputedStyleExtractor computedStyleAtPosition(node);
// FIXME: It's strange to not set background-color and text-decoration when propertiesToInclude is EditingPropertiesInEffect.
// However editing/selection/contains-boundaries.html fails without this ternary.
m_mutableStyle = copyPropertiesFromComputedStyle(computedStyleAtPosition,
propertiesToInclude == EditingPropertiesInEffect ? OnlyEditingInheritableProperties : propertiesToInclude);
if (propertiesToInclude == EditingPropertiesInEffect) {
if (RefPtr<CSSValue> value = backgroundColorInEffect(node))
m_mutableStyle->setProperty(CSSPropertyBackgroundColor, value->cssText());
if (RefPtr<CSSValue> value = computedStyleAtPosition.propertyValue(CSSPropertyWebkitTextDecorationsInEffect)) {
m_mutableStyle->setProperty(CSSPropertyTextDecoration, value->cssText());
m_mutableStyle->removeProperty(CSSPropertyWebkitTextDecorationsInEffect);
}
}
if (node && node->computedStyle()) {
auto* renderStyle = node->computedStyle();
removeTextFillAndStrokeColorsIfNeeded(renderStyle);
if (renderStyle->fontDescription().keywordSize())
m_mutableStyle->setProperty(CSSPropertyFontSize, computedStyleAtPosition.getFontSizeCSSValuePreferringKeyword()->cssText());
}
m_shouldUseFixedDefaultFontSize = computedStyleAtPosition.useFixedFontDefaultSize();
extractFontSizeDelta();
}
void EditingStyle::removeTextFillAndStrokeColorsIfNeeded(const RenderStyle* renderStyle)
{
// If a node's text fill color is invalid, then its children use
// their font-color as their text fill color (they don't
// inherit it). Likewise for stroke color.
if (!renderStyle->textFillColor().isValid())
m_mutableStyle->removeProperty(CSSPropertyWebkitTextFillColor);
if (!renderStyle->textStrokeColor().isValid())
m_mutableStyle->removeProperty(CSSPropertyWebkitTextStrokeColor);
}
void EditingStyle::setProperty(CSSPropertyID propertyID, const String& value, bool important)
{
if (!m_mutableStyle)
m_mutableStyle = MutableStyleProperties::create();
m_mutableStyle->setProperty(propertyID, value, important);
}
void EditingStyle::extractFontSizeDelta()
{
if (!m_mutableStyle)
return;
if (m_mutableStyle->getPropertyCSSValue(CSSPropertyFontSize)) {
// Explicit font size overrides any delta.
m_mutableStyle->removeProperty(CSSPropertyWebkitFontSizeDelta);
return;
}
// Get the adjustment amount out of the style.
RefPtr<CSSValue> value = m_mutableStyle->getPropertyCSSValue(CSSPropertyWebkitFontSizeDelta);
if (!is<CSSPrimitiveValue>(value))
return;
CSSPrimitiveValue& primitiveValue = downcast<CSSPrimitiveValue>(*value);
// Only PX handled now. If we handle more types in the future, perhaps
// a switch statement here would be more appropriate.
if (!primitiveValue.isPx())
return;
m_fontSizeDelta = primitiveValue.floatValue();
m_mutableStyle->removeProperty(CSSPropertyWebkitFontSizeDelta);
}
bool EditingStyle::isEmpty() const
{
return (!m_mutableStyle || m_mutableStyle->isEmpty()) && m_fontSizeDelta == NoFontDelta
&& underlineChange() == TextDecorationChange::None && strikeThroughChange() == TextDecorationChange::None;
}
Ref<MutableStyleProperties> EditingStyle::styleWithResolvedTextDecorations() const
{
bool hasTextDecorationChanges = underlineChange() != TextDecorationChange::None || strikeThroughChange() != TextDecorationChange::None;
if (m_mutableStyle && !hasTextDecorationChanges)
return *m_mutableStyle;
Ref<MutableStyleProperties> style = m_mutableStyle ? m_mutableStyle->mutableCopy() : MutableStyleProperties::create();
Ref<CSSValueList> valueList = CSSValueList::createSpaceSeparated();
if (underlineChange() == TextDecorationChange::Add)
valueList->append(CSSValuePool::singleton().createIdentifierValue(CSSValueUnderline));
if (strikeThroughChange() == TextDecorationChange::Add)
valueList->append(CSSValuePool::singleton().createIdentifierValue(CSSValueLineThrough));
if (valueList->length())
style->setProperty(CSSPropertyTextDecoration, valueList.ptr());
else
style->setProperty(CSSPropertyTextDecoration, CSSValuePool::singleton().createIdentifierValue(CSSValueNone));
return style;
}
Optional<WritingDirection> EditingStyle::textDirection() const
{
if (!m_mutableStyle)
return WTF::nullopt;
RefPtr<CSSValue> unicodeBidi = m_mutableStyle->getPropertyCSSValue(CSSPropertyUnicodeBidi);
if (!is<CSSPrimitiveValue>(unicodeBidi))
return WTF::nullopt;
CSSValueID unicodeBidiValue = downcast<CSSPrimitiveValue>(*unicodeBidi).valueID();
if (unicodeBidiValue == CSSValueEmbed) {
RefPtr<CSSValue> direction = m_mutableStyle->getPropertyCSSValue(CSSPropertyDirection);
if (!is<CSSPrimitiveValue>(direction))
return WTF::nullopt;
return downcast<CSSPrimitiveValue>(*direction).valueID() == CSSValueLtr ? WritingDirection::LeftToRight : WritingDirection::RightToLeft;
}
if (unicodeBidiValue == CSSValueNormal)
return WritingDirection::Natural;
return WTF::nullopt;
}
void EditingStyle::setStyle(RefPtr<MutableStyleProperties>&& style)
{
m_mutableStyle = WTFMove(style);
// FIXME: We should be able to figure out whether or not font is fixed width for mutable style.
// We need to check font-family is monospace as in FontDescription but we don't want to duplicate code here.
m_shouldUseFixedDefaultFontSize = false;
extractFontSizeDelta();
}
void EditingStyle::overrideWithStyle(const StyleProperties& style)
{
return mergeStyle(&style, OverrideValues);
}
static void applyTextDecorationChangeToValueList(CSSValueList& valueList, TextDecorationChange change, Ref<CSSPrimitiveValue>&& value)
{
switch (change) {
case TextDecorationChange::None:
break;
case TextDecorationChange::Add:
valueList.append(WTFMove(value));
break;
case TextDecorationChange::Remove:
valueList.removeAll(&value.get());
break;
}
}
void EditingStyle::overrideTypingStyleAt(const EditingStyle& style, const Position& position)
{
mergeStyle(style.m_mutableStyle.get(), OverrideValues);
m_fontSizeDelta += style.m_fontSizeDelta;
prepareToApplyAt(position, EditingStyle::PreserveWritingDirection);
auto underlineChange = style.underlineChange();
auto strikeThroughChange = style.strikeThroughChange();
if (underlineChange == TextDecorationChange::None && strikeThroughChange == TextDecorationChange::None)
return;
if (!m_mutableStyle)
m_mutableStyle = MutableStyleProperties::create();
auto& cssValuePool = CSSValuePool::singleton();
Ref<CSSPrimitiveValue> underline = cssValuePool.createIdentifierValue(CSSValueUnderline);
Ref<CSSPrimitiveValue> lineThrough = cssValuePool.createIdentifierValue(CSSValueLineThrough);
RefPtr<CSSValue> value = m_mutableStyle->getPropertyCSSValue(CSSPropertyWebkitTextDecorationsInEffect);
RefPtr<CSSValueList> valueList;
if (value && value->isValueList()) {
valueList = downcast<CSSValueList>(*value).copy();
applyTextDecorationChangeToValueList(*valueList, underlineChange, WTFMove(underline));
applyTextDecorationChangeToValueList(*valueList, strikeThroughChange, WTFMove(lineThrough));
} else {
valueList = CSSValueList::createSpaceSeparated();
if (underlineChange == TextDecorationChange::Add)
valueList->append(WTFMove(underline));
if (strikeThroughChange == TextDecorationChange::Add)
valueList->append(WTFMove(lineThrough));
}
m_mutableStyle->setProperty(CSSPropertyWebkitTextDecorationsInEffect, valueList.get());
}
void EditingStyle::clear()
{
m_mutableStyle = nullptr;
m_shouldUseFixedDefaultFontSize = false;
m_fontSizeDelta = NoFontDelta;
setUnderlineChange(TextDecorationChange::None);
setStrikeThroughChange(TextDecorationChange::None);
}
Ref<EditingStyle> EditingStyle::copy() const
{
auto copy = EditingStyle::create();
if (m_mutableStyle)
copy->m_mutableStyle = m_mutableStyle->mutableCopy();
copy->m_shouldUseFixedDefaultFontSize = m_shouldUseFixedDefaultFontSize;
copy->m_underlineChange = m_underlineChange;
copy->m_strikeThroughChange = m_strikeThroughChange;
copy->m_fontSizeDelta = m_fontSizeDelta;
return copy;
}
Ref<EditingStyle> EditingStyle::extractAndRemoveBlockProperties()
{
auto blockProperties = EditingStyle::create();
if (!m_mutableStyle)
return blockProperties;
blockProperties->m_mutableStyle = m_mutableStyle->copyBlockProperties();
m_mutableStyle->removeBlockProperties();
return blockProperties;
}
Ref<EditingStyle> EditingStyle::extractAndRemoveTextDirection()
{
auto textDirection = EditingStyle::create();
textDirection->m_mutableStyle = MutableStyleProperties::create();
textDirection->m_mutableStyle->setProperty(CSSPropertyUnicodeBidi, CSSValueEmbed, m_mutableStyle->propertyIsImportant(CSSPropertyUnicodeBidi));
textDirection->m_mutableStyle->setProperty(CSSPropertyDirection, m_mutableStyle->getPropertyValue(CSSPropertyDirection),
m_mutableStyle->propertyIsImportant(CSSPropertyDirection));
m_mutableStyle->removeProperty(CSSPropertyUnicodeBidi);
m_mutableStyle->removeProperty(CSSPropertyDirection);
return textDirection;
}
void EditingStyle::removeBlockProperties()
{
if (!m_mutableStyle)
return;
m_mutableStyle->removeBlockProperties();
}
void EditingStyle::removeStyleAddedByNode(Node* node)
{
if (!node || !node->parentNode())
return;
RefPtr<MutableStyleProperties> parentStyle = copyPropertiesFromComputedStyle(node->parentNode(), EditingPropertiesInEffect);
RefPtr<MutableStyleProperties> nodeStyle = copyPropertiesFromComputedStyle(node, EditingPropertiesInEffect);
removeEquivalentProperties(*parentStyle);
removeEquivalentProperties(*nodeStyle);
}
void EditingStyle::removeStyleConflictingWithStyleOfNode(Node& node)
{
if (!node.parentNode() || !m_mutableStyle)
return;
RefPtr<MutableStyleProperties> parentStyle = copyPropertiesFromComputedStyle(node.parentNode(), EditingPropertiesInEffect);
auto nodeStyle = EditingStyle::create(&node, EditingPropertiesInEffect);
nodeStyle->removeEquivalentProperties(*parentStyle);
MutableStyleProperties* style = nodeStyle->style();
unsigned propertyCount = style->propertyCount();
for (unsigned i = 0; i < propertyCount; ++i)
m_mutableStyle->removeProperty(style->propertyAt(i).id());
}
void EditingStyle::collapseTextDecorationProperties()
{
if (!m_mutableStyle)
return;
RefPtr<CSSValue> textDecorationsInEffect = m_mutableStyle->getPropertyCSSValue(CSSPropertyWebkitTextDecorationsInEffect);
if (!textDecorationsInEffect)
return;
if (textDecorationsInEffect->isValueList())
m_mutableStyle->setProperty(CSSPropertyTextDecoration, textDecorationsInEffect->cssText(), m_mutableStyle->propertyIsImportant(CSSPropertyTextDecoration));
else
m_mutableStyle->removeProperty(CSSPropertyTextDecoration);
m_mutableStyle->removeProperty(CSSPropertyWebkitTextDecorationsInEffect);
}
// CSS properties that create a visual difference only when applied to text.
static const CSSPropertyID textOnlyProperties[] = {
CSSPropertyTextDecoration,
CSSPropertyWebkitTextDecorationsInEffect,
CSSPropertyFontStyle,
CSSPropertyFontWeight,
CSSPropertyColor,
};
TriState EditingStyle::triStateOfStyle(EditingStyle* style) const
{
if (!style || !style->m_mutableStyle)
return TriState::False;
return triStateOfStyle(*style->m_mutableStyle, DoNotIgnoreTextOnlyProperties);
}
template<typename T>
TriState EditingStyle::triStateOfStyle(T& styleToCompare, ShouldIgnoreTextOnlyProperties shouldIgnoreTextOnlyProperties) const
{
if (!m_mutableStyle)
return TriState::True;
RefPtr<MutableStyleProperties> difference = getPropertiesNotIn(*m_mutableStyle, styleToCompare);
if (shouldIgnoreTextOnlyProperties == IgnoreTextOnlyProperties)
difference->removePropertiesInSet(textOnlyProperties, WTF_ARRAY_LENGTH(textOnlyProperties));
if (difference->isEmpty())
return TriState::True;
if (difference->propertyCount() == m_mutableStyle->propertyCount())
return TriState::False;
return TriState::Indeterminate;
}
TriState EditingStyle::triStateOfStyle(const VisibleSelection& selection) const
{
if (!selection.isCaretOrRange())
return TriState::False;
if (selection.isCaret())
return triStateOfStyle(EditingStyle::styleAtSelectionStart(selection).get());
TriState state = TriState::False;
bool nodeIsStart = true;
for (Node* node = selection.start().deprecatedNode(); node; node = NodeTraversal::next(*node)) {
if (node->renderer() && node->hasEditableStyle()) {
ComputedStyleExtractor computedStyle(node);
TriState nodeState = triStateOfStyle(computedStyle, node->isTextNode() ? EditingStyle::DoNotIgnoreTextOnlyProperties : EditingStyle::IgnoreTextOnlyProperties);
if (nodeIsStart) {
state = nodeState;
nodeIsStart = false;
} else if (state != nodeState && node->isTextNode()) {
state = TriState::Indeterminate;
break;
}
}
if (node == selection.end().deprecatedNode())
break;
}
return state;
}
static RefPtr<CSSValueList> textDecorationValueList(const StyleProperties& properties)
{
RefPtr<CSSValue> value = properties.getPropertyCSSValue(CSSPropertyTextDecoration);
if (!is<CSSValueList>(value))
return nullptr;
return downcast<CSSValueList>(value.get());
}
bool EditingStyle::conflictsWithInlineStyleOfElement(StyledElement& element, RefPtr<MutableStyleProperties>* newInlineStylePtr, EditingStyle* extractedStyle) const
{
const StyleProperties* inlineStyle = element.inlineStyle();
if (!inlineStyle)
return false;
bool conflicts = false;
RefPtr<MutableStyleProperties> newInlineStyle;
if (newInlineStylePtr) {
newInlineStyle = inlineStyle->mutableCopy();
*newInlineStylePtr = newInlineStyle;
}
bool shouldRemoveUnderline = underlineChange() == TextDecorationChange::Remove;
bool shouldRemoveStrikeThrough = strikeThroughChange() == TextDecorationChange::Remove;
if (shouldRemoveUnderline || shouldRemoveStrikeThrough) {
if (RefPtr<CSSValueList> valueList = textDecorationValueList(*inlineStyle)) {
auto newValueList = valueList->copy();
auto extractedValueList = CSSValueList::createSpaceSeparated();
Ref<CSSPrimitiveValue> underline = CSSValuePool::singleton().createIdentifierValue(CSSValueUnderline);
if (shouldRemoveUnderline && valueList->hasValue(underline.ptr())) {
if (!newInlineStyle)
return true;
newValueList->removeAll(underline.ptr());
extractedValueList->append(WTFMove(underline));
}
Ref<CSSPrimitiveValue> lineThrough = CSSValuePool::singleton().createIdentifierValue(CSSValueLineThrough);
if (shouldRemoveStrikeThrough && valueList->hasValue(lineThrough.ptr())) {
if (!newInlineStyle)
return true;
newValueList->removeAll(lineThrough.ptr());
extractedValueList->append(WTFMove(lineThrough));
}
if (extractedValueList->length()) {
conflicts = true;
if (newValueList->length())
newInlineStyle->setProperty(CSSPropertyTextDecoration, WTFMove(newValueList));
else
newInlineStyle->removeProperty(CSSPropertyTextDecoration);
if (extractedStyle) {
bool isImportant = inlineStyle->propertyIsImportant(CSSPropertyTextDecoration);
extractedStyle->setProperty(CSSPropertyTextDecoration, extractedValueList->cssText(), isImportant);
}
}
}
}
unsigned propertyCount = m_mutableStyle ? m_mutableStyle->propertyCount() : 0;
for (unsigned i = 0; i < propertyCount; ++i) {
CSSPropertyID propertyID = m_mutableStyle->propertyAt(i).id();
// We don't override whitespace property of a tab span because that would collapse the tab into a space.
if (propertyID == CSSPropertyWhiteSpace && isTabSpanNode(&element))
continue;
if (propertyID == CSSPropertyWebkitTextDecorationsInEffect && inlineStyle->getPropertyCSSValue(CSSPropertyTextDecoration)) {
if (!newInlineStyle)
return true;
conflicts = true;
newInlineStyle->removeProperty(CSSPropertyTextDecoration);
if (extractedStyle)
extractedStyle->setProperty(CSSPropertyTextDecoration, inlineStyle->getPropertyValue(CSSPropertyTextDecoration), inlineStyle->propertyIsImportant(CSSPropertyTextDecoration));
}
if (!inlineStyle->getPropertyCSSValue(propertyID))
continue;
if (propertyID == CSSPropertyUnicodeBidi && inlineStyle->getPropertyCSSValue(CSSPropertyDirection)) {
if (!newInlineStyle)
return true;
conflicts = true;
newInlineStyle->removeProperty(CSSPropertyDirection);
if (extractedStyle)
extractedStyle->setProperty(propertyID, inlineStyle->getPropertyValue(propertyID), inlineStyle->propertyIsImportant(propertyID));
}
if (!newInlineStyle)
return true;
conflicts = true;
newInlineStyle->removeProperty(propertyID);
if (extractedStyle)
extractedStyle->setProperty(propertyID, inlineStyle->getPropertyValue(propertyID), inlineStyle->propertyIsImportant(propertyID));
}
return conflicts;
}
static const Vector<const HTMLElementEquivalent*>& htmlElementEquivalents()
{
static const auto equivalents = makeNeverDestroyed(Vector<const HTMLElementEquivalent*> {
new HTMLElementEquivalent(CSSPropertyFontWeight, CSSValueBold, HTMLNames::bTag),
new HTMLElementEquivalent(CSSPropertyFontWeight, CSSValueBold, HTMLNames::strongTag),
new HTMLElementEquivalent(CSSPropertyVerticalAlign, CSSValueSub, HTMLNames::subTag),
new HTMLElementEquivalent(CSSPropertyVerticalAlign, CSSValueSuper, HTMLNames::supTag),
new HTMLElementEquivalent(CSSPropertyFontStyle, CSSValueItalic, HTMLNames::iTag),
new HTMLElementEquivalent(CSSPropertyFontStyle, CSSValueItalic, HTMLNames::emTag),
new HTMLTextDecorationEquivalent(CSSValueUnderline, HTMLNames::uTag),
new HTMLTextDecorationEquivalent(CSSValueLineThrough, HTMLNames::sTag),
new HTMLTextDecorationEquivalent(CSSValueLineThrough, HTMLNames::strikeTag),
});
return equivalents;
}
bool EditingStyle::conflictsWithImplicitStyleOfElement(HTMLElement& element, EditingStyle* extractedStyle, ShouldExtractMatchingStyle shouldExtractMatchingStyle) const
{
if (isEmpty())
return false;
for (auto& equivalent : htmlElementEquivalents()) {
if (equivalent->matches(element) && equivalent->propertyExistsInStyle(*this)
&& (shouldExtractMatchingStyle == ExtractMatchingStyle || !equivalent->valueIsPresentInStyle(element, *this))) {
if (extractedStyle)
equivalent->addToStyle(&element, extractedStyle);
return true;
}
}
return false;
}
static const Vector<const HTMLAttributeEquivalent*>& htmlAttributeEquivalents()
{
static const auto equivalents = makeNeverDestroyed(Vector<const HTMLAttributeEquivalent*> {
// elementIsStyledSpanOrHTMLEquivalent depends on the fact each HTMLAttriuteEquivalent matches exactly one attribute
// of exactly one element except dirAttr.
new HTMLAttributeEquivalent(CSSPropertyColor, HTMLNames::fontTag, HTMLNames::colorAttr),
new HTMLAttributeEquivalent(CSSPropertyFontFamily, HTMLNames::fontTag, HTMLNames::faceAttr),
new HTMLFontSizeEquivalent,
new HTMLAttributeEquivalent(CSSPropertyDirection, HTMLNames::dirAttr),
new HTMLAttributeEquivalent(CSSPropertyUnicodeBidi, HTMLNames::dirAttr),
});
return equivalents;
}
bool EditingStyle::conflictsWithImplicitStyleOfAttributes(HTMLElement& element) const
{
if (isEmpty())
return false;
for (auto& equivalent : htmlAttributeEquivalents()) {
if (equivalent->matches(element) && equivalent->propertyExistsInStyle(*this) && !equivalent->valueIsPresentInStyle(element, *this))
return true;
}
return false;
}
bool EditingStyle::extractConflictingImplicitStyleOfAttributes(HTMLElement& element, ShouldPreserveWritingDirection shouldPreserveWritingDirection,
EditingStyle* extractedStyle, Vector<QualifiedName>& conflictingAttributes, ShouldExtractMatchingStyle shouldExtractMatchingStyle) const
{
// HTMLAttributeEquivalent::addToStyle doesn't support unicode-bidi and direction properties
ASSERT(!extractedStyle || shouldPreserveWritingDirection == PreserveWritingDirection);
if (!m_mutableStyle)
return false;
bool removed = false;
for (auto& equivalent : htmlAttributeEquivalents()) {
// unicode-bidi and direction are pushed down separately so don't push down with other styles.
if (shouldPreserveWritingDirection == PreserveWritingDirection && equivalent->attributeName() == HTMLNames::dirAttr)
continue;
if (!equivalent->matches(element) || !equivalent->propertyExistsInStyle(*this)
|| (shouldExtractMatchingStyle == DoNotExtractMatchingStyle && equivalent->valueIsPresentInStyle(element, *this)))
continue;
if (extractedStyle)
equivalent->addToStyle(&element, extractedStyle);
conflictingAttributes.append(equivalent->attributeName());
removed = true;
}
return removed;
}
bool EditingStyle::styleIsPresentInComputedStyleOfNode(Node& node) const
{
if (isEmpty())
return true;
ComputedStyleExtractor computedStyle(&node);
bool shouldAddUnderline = underlineChange() == TextDecorationChange::Add;
bool shouldAddLineThrough = strikeThroughChange() == TextDecorationChange::Add;
if (shouldAddUnderline || shouldAddLineThrough) {
bool hasUnderline = false;
bool hasLineThrough = false;
if (RefPtr<CSSValue> value = computedStyle.propertyValue(CSSPropertyTextDecoration)) {
if (value->isValueList()) {
auto& cssValuePool = CSSValuePool::singleton();
const CSSValueList& valueList = downcast<CSSValueList>(*value);
hasUnderline = valueList.hasValue(cssValuePool.createIdentifierValue(CSSValueUnderline).ptr());
hasLineThrough = valueList.hasValue(cssValuePool.createIdentifierValue(CSSValueLineThrough).ptr());
}
}
if ((shouldAddUnderline && !hasUnderline) || (shouldAddLineThrough && !hasLineThrough))
return false;
}
return !m_mutableStyle || getPropertiesNotIn(*m_mutableStyle, computedStyle)->isEmpty();
}
bool EditingStyle::elementIsStyledSpanOrHTMLEquivalent(const HTMLElement& element)
{
bool elementIsSpanOrElementEquivalent = false;
if (element.hasTagName(HTMLNames::spanTag))
elementIsSpanOrElementEquivalent = true;
else {
for (auto& equivalent : htmlElementEquivalents()) {
if (equivalent->matches(element)) {
elementIsSpanOrElementEquivalent = true;
break;
}
}
}
if (!element.hasAttributes())
return elementIsSpanOrElementEquivalent; // span, b, etc... without any attributes
unsigned matchedAttributes = 0;
for (auto& equivalent : htmlAttributeEquivalents()) {
if (equivalent->matches(element) && equivalent->attributeName() != HTMLNames::dirAttr)
matchedAttributes++;
}
if (!elementIsSpanOrElementEquivalent && !matchedAttributes)
return false; // element is not a span, a html element equivalent, or font element.
if (element.attributeWithoutSynchronization(HTMLNames::classAttr) == AppleStyleSpanClass)
matchedAttributes++;
if (element.hasAttribute(HTMLNames::styleAttr)) {
if (const StyleProperties* style = element.inlineStyle()) {
unsigned propertyCount = style->propertyCount();
for (unsigned i = 0; i < propertyCount; ++i) {
if (!isEditingProperty(style->propertyAt(i).id()))
return false;
}
}
matchedAttributes++;
}
// font with color attribute, span with style attribute, etc...
ASSERT(matchedAttributes <= element.attributeCount());
return matchedAttributes >= element.attributeCount();
}
void EditingStyle::prepareToApplyAt(const Position& position, ShouldPreserveWritingDirection shouldPreserveWritingDirection)
{
if (!m_mutableStyle)
return;
// ReplaceSelectionCommand::handleStyleSpans() requires that this function only removes the editing style.
// If this function was modified in the future to delete all redundant properties, then add a boolean value to indicate
// which one of editingStyleAtPosition or computedStyle is called.
auto editingStyleAtPosition = EditingStyle::create(position, EditingPropertiesInEffect);
StyleProperties* styleAtPosition = editingStyleAtPosition->m_mutableStyle.get();
RefPtr<CSSValue> unicodeBidi;
RefPtr<CSSValue> direction;
if (shouldPreserveWritingDirection == PreserveWritingDirection) {
unicodeBidi = m_mutableStyle->getPropertyCSSValue(CSSPropertyUnicodeBidi);
direction = m_mutableStyle->getPropertyCSSValue(CSSPropertyDirection);
}
removeEquivalentProperties(*styleAtPosition);
if (textAlignResolvingStartAndEnd(*m_mutableStyle) == textAlignResolvingStartAndEnd(*styleAtPosition))
m_mutableStyle->removeProperty(CSSPropertyTextAlign);
if (equalIgnoringSemanticColor(textColorFromStyle(*m_mutableStyle), textColorFromStyle(*styleAtPosition)))
m_mutableStyle->removeProperty(CSSPropertyColor);
if (equalIgnoringSemanticColor(caretColorFromStyle(*m_mutableStyle), caretColorFromStyle(*styleAtPosition)))
m_mutableStyle->removeProperty(CSSPropertyCaretColor);
if (hasTransparentBackgroundColor(m_mutableStyle.get())
|| cssValueToColor(m_mutableStyle->getPropertyCSSValue(CSSPropertyBackgroundColor).get()) == rgbaBackgroundColorInEffect(position.containerNode()))
m_mutableStyle->removeProperty(CSSPropertyBackgroundColor);
if (is<CSSPrimitiveValue>(unicodeBidi)) {
m_mutableStyle->setProperty(CSSPropertyUnicodeBidi, static_cast<CSSValueID>(downcast<CSSPrimitiveValue>(*unicodeBidi).valueID()));
if (is<CSSPrimitiveValue>(direction))
m_mutableStyle->setProperty(CSSPropertyDirection, static_cast<CSSValueID>(downcast<CSSPrimitiveValue>(*direction).valueID()));
}
}
void EditingStyle::mergeTypingStyle(Document& document)
{
RefPtr<EditingStyle> typingStyle = document.frame()->selection().typingStyle();
if (!typingStyle || typingStyle == this)
return;
mergeStyle(typingStyle->style(), OverrideValues);
}
void EditingStyle::mergeInlineStyleOfElement(StyledElement& element, CSSPropertyOverrideMode mode, PropertiesToInclude propertiesToInclude)
{
if (!element.inlineStyle())
return;
switch (propertiesToInclude) {
case AllProperties:
mergeStyle(element.inlineStyle(), mode);
return;
case OnlyEditingInheritableProperties:
mergeStyle(copyEditingProperties(element.inlineStyle(), OnlyInheritableEditingProperties).ptr(), mode);
return;
case EditingPropertiesInEffect:
mergeStyle(copyEditingProperties(element.inlineStyle(), AllEditingProperties).ptr(), mode);
return;
}
}
static inline bool elementMatchesAndPropertyIsNotInInlineStyleDecl(const HTMLElementEquivalent& equivalent, const StyledElement& element,
EditingStyle::CSSPropertyOverrideMode mode, EditingStyle& style)
{
if (!equivalent.matches(element))
return false;
if (mode != EditingStyle::OverrideValues && equivalent.propertyExistsInStyle(style))
return false;
return !element.inlineStyle() || !equivalent.propertyExistsInStyle(EditingStyle::create(element.inlineStyle()).get());
}
static RefPtr<MutableStyleProperties> extractEditingProperties(const StyleProperties* style, EditingStyle::PropertiesToInclude propertiesToInclude)
{
if (!style)
return nullptr;
switch (propertiesToInclude) {
case EditingStyle::OnlyEditingInheritableProperties:
return copyEditingProperties(style, OnlyInheritableEditingProperties);
case EditingStyle::AllProperties:
case EditingStyle::EditingPropertiesInEffect:
break;
}
return copyEditingProperties(style, AllEditingProperties);
}
void EditingStyle::mergeInlineAndImplicitStyleOfElement(StyledElement& element, CSSPropertyOverrideMode mode, PropertiesToInclude propertiesToInclude, StandardFontFamilySerializationMode standardFontFamilySerializationMode)
{
auto styleFromRules = EditingStyle::create();
styleFromRules->mergeStyleFromRulesForSerialization(element, standardFontFamilySerializationMode);
if (element.inlineStyle())
styleFromRules->m_mutableStyle->mergeAndOverrideOnConflict(*element.inlineStyle());
styleFromRules->m_mutableStyle = extractEditingProperties(styleFromRules->m_mutableStyle.get(), propertiesToInclude);
mergeStyle(styleFromRules->m_mutableStyle.get(), mode);
for (auto& equivalent : htmlElementEquivalents()) {
if (elementMatchesAndPropertyIsNotInInlineStyleDecl(*equivalent, element, mode, *this))
equivalent->addToStyle(&element, this);
}
for (auto& equivalent : htmlAttributeEquivalents()) {
if (equivalent->attributeName() == HTMLNames::dirAttr)
continue; // We don't want to include directionality
if (elementMatchesAndPropertyIsNotInInlineStyleDecl(*equivalent, element, mode, *this))
equivalent->addToStyle(&element, this);
}
}
Ref<EditingStyle> EditingStyle::wrappingStyleForSerialization(Node& context, bool shouldAnnotate, StandardFontFamilySerializationMode standardFontFamilySerializationMode)
{
if (shouldAnnotate) {
auto wrappingStyle = EditingStyle::create(&context, EditingStyle::EditingPropertiesInEffect);
// Styles that Mail blockquotes contribute should only be placed on the Mail blockquote,
// to help us differentiate those styles from ones that the user has applied.
// This helps us get the color of content pasted into blockquotes right.
wrappingStyle->removeStyleAddedByNode(enclosingNodeOfType(firstPositionInOrBeforeNode(&context), isMailBlockquote, CanCrossEditingBoundary));
// Call collapseTextDecorationProperties first or otherwise it'll copy the value over from in-effect to text-decorations.
wrappingStyle->collapseTextDecorationProperties();
return wrappingStyle;
}
auto wrappingStyle = EditingStyle::create();
// When not annotating for interchange, we only preserve inline style declarations.
for (Node* node = &context; node && !node->isDocumentNode(); node = node->parentNode()) {
if (is<StyledElement>(*node) && !isMailBlockquote(node))
wrappingStyle->mergeInlineAndImplicitStyleOfElement(downcast<StyledElement>(*node), DoNotOverrideValues, EditingPropertiesInEffect, standardFontFamilySerializationMode);
}
return wrappingStyle;
}
static void mergeTextDecorationValues(CSSValueList& mergedValue, const CSSValueList& valueToMerge)
{
auto& cssValuePool = CSSValuePool::singleton();
Ref<CSSPrimitiveValue> underline = cssValuePool.createIdentifierValue(CSSValueUnderline);
Ref<CSSPrimitiveValue> lineThrough = cssValuePool.createIdentifierValue(CSSValueLineThrough);
if (valueToMerge.hasValue(underline.ptr()) && !mergedValue.hasValue(underline.ptr()))
mergedValue.append(WTFMove(underline));
if (valueToMerge.hasValue(lineThrough.ptr()) && !mergedValue.hasValue(lineThrough.ptr()))
mergedValue.append(WTFMove(lineThrough));
}
void EditingStyle::mergeStyle(const StyleProperties* style, CSSPropertyOverrideMode mode)
{
if (!style)
return;
if (!m_mutableStyle) {
m_mutableStyle = style->mutableCopy();
return;
}
unsigned propertyCount = style->propertyCount();
for (unsigned i = 0; i < propertyCount; ++i) {
StyleProperties::PropertyReference property = style->propertyAt(i);
RefPtr<CSSValue> value = m_mutableStyle->getPropertyCSSValue(property.id());
// text decorations never override values.
if ((property.id() == CSSPropertyTextDecoration || property.id() == CSSPropertyWebkitTextDecorationsInEffect)
&& is<CSSValueList>(*property.value()) && value) {
if (is<CSSValueList>(*value)) {
auto newValue = downcast<CSSValueList>(*value).copy();
mergeTextDecorationValues(newValue, downcast<CSSValueList>(*property.value()));
m_mutableStyle->setProperty(property.id(), WTFMove(newValue), property.isImportant());
continue;
}
value = nullptr; // text-decoration: none is equivalent to not having the property.
}
if (mode == OverrideValues || (mode == DoNotOverrideValues && !value))
m_mutableStyle->setProperty(property.id(), property.value(), property.isImportant());
}
int oldFontSizeDelta = m_fontSizeDelta;
extractFontSizeDelta();
m_fontSizeDelta += oldFontSizeDelta;
}
static Ref<MutableStyleProperties> styleFromMatchedRulesForElement(Element& element, unsigned rulesToInclude)
{
auto style = MutableStyleProperties::create();
for (auto& matchedRule : element.styleResolver().styleRulesForElement(&element, rulesToInclude))
style->mergeAndOverrideOnConflict(matchedRule->properties());
return style;
}
void EditingStyle::mergeStyleFromRules(StyledElement& element)
{
RefPtr<MutableStyleProperties> styleFromMatchedRules = styleFromMatchedRulesForElement(element,
Style::Resolver::AuthorCSSRules);
// Styles from the inline style declaration, held in the variable "style", take precedence
// over those from matched rules.
if (m_mutableStyle)
styleFromMatchedRules->mergeAndOverrideOnConflict(*m_mutableStyle);
clear();
m_mutableStyle = styleFromMatchedRules;
}
static String familyNameFromCSSPrimitiveValue(const CSSPrimitiveValue& primitiveValue)
{
if (!primitiveValue.isFontFamily())
return { };
return primitiveValue.fontFamily().familyName;
}
static String loneFontFamilyName(const CSSValue& value)
{
if (is<CSSPrimitiveValue>(value))
return familyNameFromCSSPrimitiveValue(downcast<CSSPrimitiveValue>(value));
if (!is<CSSValueList>(value) || downcast<CSSValueList>(value).length() != 1)
return { };
auto& item = *downcast<CSSValueList>(value).item(0);
if (!is<CSSPrimitiveValue>(item))
return { };
return familyNameFromCSSPrimitiveValue(downcast<CSSPrimitiveValue>(item));
}
void EditingStyle::mergeStyleFromRulesForSerialization(StyledElement& element, StandardFontFamilySerializationMode standardFontFamilySerializationMode)
{
mergeStyleFromRules(element);
// The property value, if it's a percentage, may not reflect the actual computed value.
// For example: style="height: 1%; overflow: visible;" in quirksmode
// FIXME: There are others like this, see <rdar://problem/5195123> Slashdot copy/paste fidelity problem
auto fromComputedStyle = MutableStyleProperties::create();
ComputedStyleExtractor computedStyle(&element);
bool shouldRemoveFontFamily = false;
{
unsigned propertyCount = m_mutableStyle->propertyCount();
for (unsigned i = 0; i < propertyCount; ++i) {
StyleProperties::PropertyReference property = m_mutableStyle->propertyAt(i);
CSSValue& value = *property.value();
if (property.id() == CSSPropertyFontFamily) {
auto familyName = loneFontFamilyName(value);
if (FontCache::isSystemFontForbiddenForEditing(familyName)
|| (standardFontFamilySerializationMode == StandardFontFamilySerializationMode::Strip && familyName == standardFamily))
shouldRemoveFontFamily = true;
continue;
}
if (!is<CSSPrimitiveValue>(value))
continue;
if (downcast<CSSPrimitiveValue>(value).isPercentage()) {
if (auto computedPropertyValue = computedStyle.propertyValue(property.id()))
fromComputedStyle->addParsedProperty(CSSProperty(property.id(), WTFMove(computedPropertyValue)));
}
}
}
if (shouldRemoveFontFamily) {
m_mutableStyle->removeProperty(CSSPropertyFontFamily);
fromComputedStyle->removeProperty(CSSPropertyFontFamily);
}
m_mutableStyle->mergeAndOverrideOnConflict(fromComputedStyle.get());
}
static void removePropertiesInStyle(MutableStyleProperties* styleToRemovePropertiesFrom, MutableStyleProperties* style)
{
unsigned propertyCount = style->propertyCount();
Vector<CSSPropertyID> propertiesToRemove(propertyCount);
for (unsigned i = 0; i < propertyCount; ++i)
propertiesToRemove[i] = style->propertyAt(i).id();
styleToRemovePropertiesFrom->removePropertiesInSet(propertiesToRemove.data(), propertiesToRemove.size());
}
void EditingStyle::removeStyleFromRulesAndContext(StyledElement& element, Node* context)
{
if (!m_mutableStyle)
return;
// 1. Remove style from matched rules because style remain without repeating it in inline style declaration
RefPtr<MutableStyleProperties> styleFromMatchedRules = styleFromMatchedRulesForElement(element, Style::Resolver::AllButEmptyCSSRules);
if (styleFromMatchedRules && !styleFromMatchedRules->isEmpty())
m_mutableStyle = getPropertiesNotIn(*m_mutableStyle, *styleFromMatchedRules);
// 2. Remove style present in context and not overridden by matched rules.
auto computedStyle = EditingStyle::create(context, EditingPropertiesInEffect);
if (computedStyle->m_mutableStyle) {
if (!computedStyle->m_mutableStyle->getPropertyCSSValue(CSSPropertyBackgroundColor))
computedStyle->m_mutableStyle->setProperty(CSSPropertyBackgroundColor, CSSValueTransparent);
RefPtr<EditingStyle> computedStyleOfElement;
auto replaceSemanticColorWithComputedValue = [&](const CSSPropertyID id) {
auto color = m_mutableStyle->propertyAsColor(id);
if (!color || (color->isVisible() && !color->isSemantic()))
return;
if (!computedStyleOfElement)
computedStyleOfElement = EditingStyle::create(&element, EditingPropertiesInEffect);
if (!computedStyleOfElement->m_mutableStyle)
return;
auto computedValue = computedStyleOfElement->m_mutableStyle->getPropertyValue(id);
if (!computedValue)
return;
m_mutableStyle->setProperty(id, computedValue);
};
// Replace semantic color identifiers like -apple-system-label with RGB values so that comparsions in getPropertiesNotIn below would work.
replaceSemanticColorWithComputedValue(CSSPropertyColor);
replaceSemanticColorWithComputedValue(CSSPropertyCaretColor);
replaceSemanticColorWithComputedValue(CSSPropertyBackgroundColor);
removePropertiesInStyle(computedStyle->m_mutableStyle.get(), styleFromMatchedRules.get());
m_mutableStyle = getPropertiesNotIn(*m_mutableStyle, *computedStyle->m_mutableStyle);
}
// 3. If this element is a span and has display: inline or float: none, remove them unless they are overridden by rules.
// These rules are added by serialization code to wrap text nodes.
if (isStyleSpanOrSpanWithOnlyStyleAttribute(element)) {
if (!styleFromMatchedRules->getPropertyCSSValue(CSSPropertyDisplay) && identifierForStyleProperty(*m_mutableStyle, CSSPropertyDisplay) == CSSValueInline)
m_mutableStyle->removeProperty(CSSPropertyDisplay);
if (!styleFromMatchedRules->getPropertyCSSValue(CSSPropertyFloat) && identifierForStyleProperty(*m_mutableStyle, CSSPropertyFloat) == CSSValueNone)
m_mutableStyle->removeProperty(CSSPropertyFloat);
}
}
void EditingStyle::removePropertiesInElementDefaultStyle(Element& element)
{
if (!m_mutableStyle || m_mutableStyle->isEmpty())
return;
RefPtr<MutableStyleProperties> defaultStyle = styleFromMatchedRulesForElement(element, Style::Resolver::UAAndUserCSSRules);
removePropertiesInStyle(m_mutableStyle.get(), defaultStyle.get());
}
template<typename T>
void EditingStyle::removeEquivalentProperties(T& style)
{
Vector<CSSPropertyID> propertiesToRemove;
for (auto& property : m_mutableStyle->m_propertyVector) {
if (style.propertyMatches(property.id(), property.value()))
propertiesToRemove.append(property.id());
}
// FIXME: This should use mass removal.
for (auto& property : propertiesToRemove)
m_mutableStyle->removeProperty(property);
}
void EditingStyle::forceInline()
{
if (!m_mutableStyle)
m_mutableStyle = MutableStyleProperties::create();
const bool propertyIsImportant = true;
m_mutableStyle->setProperty(CSSPropertyDisplay, CSSValueInline, propertyIsImportant);
}
void EditingStyle::addDisplayContents()
{
if (!m_mutableStyle)
m_mutableStyle = MutableStyleProperties::create();
m_mutableStyle->setProperty(CSSPropertyDisplay, CSSValueContents);
}
bool EditingStyle::convertPositionStyle()
{
if (!m_mutableStyle)
return false;
auto& cssValuePool = CSSValuePool::singleton();
RefPtr<CSSPrimitiveValue> sticky = cssValuePool.createIdentifierValue(CSSValueSticky);
if (m_mutableStyle->propertyMatches(CSSPropertyPosition, sticky.get())) {
m_mutableStyle->setProperty(CSSPropertyPosition, cssValuePool.createIdentifierValue(CSSValueStatic), m_mutableStyle->propertyIsImportant(CSSPropertyPosition));
return false;
}
RefPtr<CSSPrimitiveValue> fixed = cssValuePool.createIdentifierValue(CSSValueFixed);
if (m_mutableStyle->propertyMatches(CSSPropertyPosition, fixed.get())) {
m_mutableStyle->setProperty(CSSPropertyPosition, cssValuePool.createIdentifierValue(CSSValueAbsolute), m_mutableStyle->propertyIsImportant(CSSPropertyPosition));
return true;
}
RefPtr<CSSPrimitiveValue> absolute = cssValuePool.createIdentifierValue(CSSValueAbsolute);
if (m_mutableStyle->propertyMatches(CSSPropertyPosition, absolute.get()))
return true;
return false;
}
bool EditingStyle::isFloating()
{
RefPtr<CSSValue> v = m_mutableStyle->getPropertyCSSValue(CSSPropertyFloat);
RefPtr<CSSPrimitiveValue> noneValue = CSSValuePool::singleton().createIdentifierValue(CSSValueNone);
return v && !v->equals(*noneValue);
}
int EditingStyle::legacyFontSize(Document& document) const
{
RefPtr<CSSValue> cssValue = m_mutableStyle->getPropertyCSSValue(CSSPropertyFontSize);
if (!is<CSSPrimitiveValue>(cssValue))
return 0;
return legacyFontSizeFromCSSValue(document, downcast<CSSPrimitiveValue>(cssValue.get()),
m_shouldUseFixedDefaultFontSize, AlwaysUseLegacyFontSize);
}
bool EditingStyle::hasStyle(CSSPropertyID propertyID, const String& value)
{
return EditingStyle::create(propertyID, value)->triStateOfStyle(this) != TriState::False;
}
RefPtr<EditingStyle> EditingStyle::styleAtSelectionStart(const VisibleSelection& selection, bool shouldUseBackgroundColorInEffect)
{
if (selection.isNone())
return nullptr;
Position position = adjustedSelectionStartForStyleComputation(selection);
// If the pos is at the end of a text node, then this node is not fully selected.
// Move it to the next deep equivalent position to avoid removing the style from this node.
// e.g. if pos was at Position("hello", 5) in <b>hello<div>world</div></b>, we want Position("world", 0) instead.
// We only do this for range because caret at Position("hello", 5) in <b>hello</b>world should give you font-weight: bold.
Node* positionNode = position.containerNode();
if (selection.isRange() && is<Text>(positionNode) && static_cast<unsigned>(position.computeOffsetInContainerNode()) == downcast<Text>(*positionNode).length())
position = nextVisuallyDistinctCandidate(position);
Element* element = position.element();
if (!element)
return nullptr;
auto style = EditingStyle::create(element, EditingStyle::AllProperties);
style->mergeTypingStyle(element->document());
// If background color is transparent, traverse parent nodes until we hit a different value or document root
// Also, if the selection is a range, ignore the background color at the start of selection,
// and find the background color of the common ancestor.
if (shouldUseBackgroundColorInEffect && (selection.isRange() || hasTransparentBackgroundColor(style->m_mutableStyle.get()))) {
if (auto range = selection.toNormalizedRange()) {
if (auto value = backgroundColorInEffect(createLiveRange(*range)->commonAncestorContainer()))
style->setProperty(CSSPropertyBackgroundColor, value->cssText());
}
}
return style;
}
WritingDirection EditingStyle::textDirectionForSelection(const VisibleSelection& selection, EditingStyle* typingStyle, bool& hasNestedOrMultipleEmbeddings)
{
hasNestedOrMultipleEmbeddings = true;
if (selection.isNone())
return WritingDirection::Natural;
Position position = selection.start().downstream();
Node* node = position.deprecatedNode();
if (!node)
return WritingDirection::Natural;
Position end;
if (selection.isRange()) {
end = selection.end().upstream();
Node* pastLast = Range::create(*end.document(), position.parentAnchoredEquivalent(), end.parentAnchoredEquivalent())->pastLastNode();
for (Node* n = node; n && n != pastLast; n = NodeTraversal::next(*n)) {
if (!n->isStyledElement())
continue;
RefPtr<CSSValue> unicodeBidi = ComputedStyleExtractor(n).propertyValue(CSSPropertyUnicodeBidi);
if (!is<CSSPrimitiveValue>(unicodeBidi))
continue;
CSSValueID unicodeBidiValue = downcast<CSSPrimitiveValue>(*unicodeBidi).valueID();
if (unicodeBidiValue == CSSValueEmbed || unicodeBidiValue == CSSValueBidiOverride)
return WritingDirection::Natural;
}
}
if (selection.isCaret()) {
if (typingStyle) {
if (auto direction = typingStyle->textDirection()) {
hasNestedOrMultipleEmbeddings = false;
return *direction;
}
}
node = selection.visibleStart().deepEquivalent().deprecatedNode();
}
// The selection is either a caret with no typing attributes or a range in which no embedding is added, so just use the start position
// to decide.
Node* block = enclosingBlock(node);
auto foundDirection = WritingDirection::Natural;
for (; node != block; node = node->parentNode()) {
if (!node->isStyledElement())
continue;
ComputedStyleExtractor computedStyle(node);
RefPtr<CSSValue> unicodeBidi = computedStyle.propertyValue(CSSPropertyUnicodeBidi);
if (!is<CSSPrimitiveValue>(unicodeBidi))
continue;
CSSValueID unicodeBidiValue = downcast<CSSPrimitiveValue>(*unicodeBidi).valueID();
if (unicodeBidiValue == CSSValueNormal)
continue;
if (unicodeBidiValue == CSSValueBidiOverride)
return WritingDirection::Natural;
ASSERT(unicodeBidiValue == CSSValueEmbed);
RefPtr<CSSValue> direction = computedStyle.propertyValue(CSSPropertyDirection);
if (!is<CSSPrimitiveValue>(direction))
continue;
CSSValueID directionValue = downcast<CSSPrimitiveValue>(*direction).valueID();
if (directionValue != CSSValueLtr && directionValue != CSSValueRtl)
continue;
if (foundDirection != WritingDirection::Natural)
return WritingDirection::Natural;
// In the range case, make sure that the embedding element persists until the end of the range.
if (selection.isRange() && !end.deprecatedNode()->isDescendantOf(*node))
return WritingDirection::Natural;
foundDirection = directionValue == CSSValueLtr ? WritingDirection::LeftToRight : WritingDirection::RightToLeft;
}
hasNestedOrMultipleEmbeddings = false;
return foundDirection;
}
Ref<EditingStyle> EditingStyle::inverseTransformColorIfNeeded(Element& element)
{
auto* renderer = element.renderer();
if (!m_mutableStyle || !renderer || !renderer->style().hasAppleColorFilter())
return *this;
auto colorForPropertyIfInvertible = [&](CSSPropertyID id) -> Optional<Color> {
auto color = m_mutableStyle->propertyAsColor(id);
if (!color || !color->isVisible() || color->isSemantic())
return WTF::nullopt;
return color;
};
auto color = colorForPropertyIfInvertible(CSSPropertyColor);
auto caretColor = colorForPropertyIfInvertible(CSSPropertyCaretColor);
auto backgroundColor = colorForPropertyIfInvertible(CSSPropertyBackgroundColor);
if (!color && !caretColor && !backgroundColor)
return *this;
auto styleWithInvertedColors = copy();
ASSERT(styleWithInvertedColors->m_mutableStyle);
const auto& colorFilter = renderer->style().appleColorFilter();
auto invertedColor = [&](CSSPropertyID propertyID) {
Color newColor = cssValueToColor(extractPropertyValue(*m_mutableStyle, propertyID).get());
colorFilter.inverseTransformColor(newColor);
styleWithInvertedColors->m_mutableStyle->setProperty(propertyID, serializationForCSS(newColor));
};
if (color)
invertedColor(CSSPropertyColor);
if (caretColor)
invertedColor(CSSPropertyCaretColor);
if (backgroundColor)
invertedColor(CSSPropertyBackgroundColor);
return styleWithInvertedColors;
}
static void reconcileTextDecorationProperties(MutableStyleProperties* style)
{
RefPtr<CSSValue> textDecorationsInEffect = style->getPropertyCSSValue(CSSPropertyWebkitTextDecorationsInEffect);
RefPtr<CSSValue> textDecoration = style->getPropertyCSSValue(CSSPropertyTextDecoration);
// We shouldn't have both text-decoration and -webkit-text-decorations-in-effect because that wouldn't make sense.
ASSERT(!textDecorationsInEffect || !textDecoration);
if (textDecorationsInEffect) {
style->setProperty(CSSPropertyTextDecoration, textDecorationsInEffect->cssText());
style->removeProperty(CSSPropertyWebkitTextDecorationsInEffect);
textDecoration = textDecorationsInEffect;
}
// If text-decoration is set to "none", remove the property because we don't want to add redundant "text-decoration: none".
if (textDecoration && !textDecoration->isValueList())
style->removeProperty(CSSPropertyTextDecoration);
}
StyleChange::StyleChange(EditingStyle* style, const Position& position)
: m_applyBold(false)
, m_applyItalic(false)
, m_applyUnderline(false)
, m_applyLineThrough(false)
, m_applySubscript(false)
, m_applySuperscript(false)
{
Document* document = position.deprecatedNode() ? &position.deprecatedNode()->document() : 0;
if (!style || style->isEmpty() || !document || !document->frame())
return;
Node* node = position.containerNode();
if (!node)
return;
ComputedStyleExtractor computedStyle(node);
// FIXME: take care of background-color in effect
RefPtr<MutableStyleProperties> mutableStyle = style->style() ?
getPropertiesNotIn(*style->style(), computedStyle) : MutableStyleProperties::create();
reconcileTextDecorationProperties(mutableStyle.get());
bool shouldStyleWithCSS = document->editor().shouldStyleWithCSS();
if (!shouldStyleWithCSS)
extractTextStyles(*document, *mutableStyle, computedStyle.useFixedFontDefaultSize());
bool shouldAddUnderline = style->underlineChange() == TextDecorationChange::Add;
bool shouldAddStrikeThrough = style->strikeThroughChange() == TextDecorationChange::Add;
if (shouldAddUnderline || shouldAddStrikeThrough) {
RefPtr<CSSValue> value = computedStyle.propertyValue(CSSPropertyWebkitTextDecorationsInEffect);
if (!is<CSSValueList>(value))
value = computedStyle.propertyValue(CSSPropertyTextDecoration);
RefPtr<CSSValueList> valueList;
if (is<CSSValueList>(value))
valueList = downcast<CSSValueList>(value.get());
auto& cssValuePool = CSSValuePool::singleton();
Ref<CSSValue> underline = cssValuePool.createIdentifierValue(CSSValueUnderline);
bool hasUnderline = valueList && valueList->hasValue(underline.ptr());
Ref<CSSValue> lineThrough = cssValuePool.createIdentifierValue(CSSValueLineThrough);
bool hasLineThrough = valueList && valueList->hasValue(lineThrough.ptr());
if (shouldStyleWithCSS) {
valueList = valueList ? valueList->copy() : CSSValueList::createSpaceSeparated();
if (shouldAddUnderline && !hasUnderline)
valueList->append(WTFMove(underline));
if (shouldAddStrikeThrough && !hasLineThrough)
valueList->append(WTFMove(lineThrough));
mutableStyle->setProperty(CSSPropertyTextDecoration, valueList.get());
} else {
m_applyUnderline = shouldAddUnderline && !hasUnderline;
m_applyLineThrough = shouldAddStrikeThrough && !hasLineThrough;
}
}
// Changing the whitespace style in a tab span would collapse the tab into a space.
if (isTabSpanTextNode(position.deprecatedNode()) || isTabSpanNode((position.deprecatedNode())))
mutableStyle->removeProperty(CSSPropertyWhiteSpace);
// If unicode-bidi is present in mutableStyle and direction is not, then add direction to mutableStyle.
// FIXME: Shouldn't this be done in getPropertiesNotIn?
if (mutableStyle->getPropertyCSSValue(CSSPropertyUnicodeBidi) && !style->style()->getPropertyCSSValue(CSSPropertyDirection))
mutableStyle->setProperty(CSSPropertyDirection, style->style()->getPropertyValue(CSSPropertyDirection));
if (!mutableStyle->isEmpty())
m_cssStyle = mutableStyle;
}
bool StyleChange::operator==(const StyleChange& other)
{
if (m_applyBold != other.m_applyBold
|| m_applyItalic != other.m_applyItalic
|| m_applyUnderline != other.m_applyUnderline
|| m_applyLineThrough != other.m_applyLineThrough
|| m_applySubscript != other.m_applySubscript
|| m_applySuperscript != other.m_applySuperscript
|| m_applyFontColor != other.m_applyFontColor
|| m_applyFontFace != other.m_applyFontFace
|| m_applyFontSize != other.m_applyFontSize)
return false;
return (!m_cssStyle && !other.m_cssStyle)
|| (m_cssStyle && other.m_cssStyle && m_cssStyle->asText() == other.m_cssStyle->asText());
}
static void setTextDecorationProperty(MutableStyleProperties& style, const CSSValueList* newTextDecoration, CSSPropertyID propertyID)
{
if (newTextDecoration->length())
style.setProperty(propertyID, newTextDecoration->cssText(), style.propertyIsImportant(propertyID));
else {
// text-decoration: none is redundant since it does not remove any text decorations.
style.removeProperty(propertyID);
}
}
void StyleChange::extractTextStyles(Document& document, MutableStyleProperties& style, bool shouldUseFixedFontDefaultSize)
{
if (identifierForStyleProperty(style, CSSPropertyFontWeight) == CSSValueBold) {
style.removeProperty(CSSPropertyFontWeight);
m_applyBold = true;
}
int fontStyle = identifierForStyleProperty(style, CSSPropertyFontStyle);
if (fontStyle == CSSValueItalic || fontStyle == CSSValueOblique) {
style.removeProperty(CSSPropertyFontStyle);
m_applyItalic = true;
}
// Assuming reconcileTextDecorationProperties has been called, there should not be -webkit-text-decorations-in-effect
// Furthermore, text-decoration: none has been trimmed so that text-decoration property is always a CSSValueList.
RefPtr<CSSValue> textDecoration = style.getPropertyCSSValue(CSSPropertyTextDecoration);
if (is<CSSValueList>(textDecoration)) {
auto& cssValuePool = CSSValuePool::singleton();
RefPtr<CSSPrimitiveValue> underline = cssValuePool.createIdentifierValue(CSSValueUnderline);
RefPtr<CSSPrimitiveValue> lineThrough = cssValuePool.createIdentifierValue(CSSValueLineThrough);
RefPtr<CSSValueList> newTextDecoration = downcast<CSSValueList>(*textDecoration).copy();
if (newTextDecoration->removeAll(underline.get()))
m_applyUnderline = true;
if (newTextDecoration->removeAll(lineThrough.get()))
m_applyLineThrough = true;
// If trimTextDecorations, delete underline and line-through
setTextDecorationProperty(style, newTextDecoration.get(), CSSPropertyTextDecoration);
}
int verticalAlign = identifierForStyleProperty(style, CSSPropertyVerticalAlign);
switch (verticalAlign) {
case CSSValueSub:
style.removeProperty(CSSPropertyVerticalAlign);
m_applySubscript = true;
break;
case CSSValueSuper:
style.removeProperty(CSSPropertyVerticalAlign);
m_applySuperscript = true;
break;
}
if (style.getPropertyCSSValue(CSSPropertyColor)) {
auto color = textColorFromStyle(style);
if (color.isOpaque()) {
m_applyFontColor = serializationForHTML(color);
style.removeProperty(CSSPropertyColor);
}
}
m_applyFontFace = style.getPropertyValue(CSSPropertyFontFamily);
// Remove quotes for Outlook 2007 compatibility. See https://bugs.webkit.org/show_bug.cgi?id=79448
m_applyFontFace.replaceWithLiteral('\"', "");
style.removeProperty(CSSPropertyFontFamily);
if (RefPtr<CSSValue> fontSize = style.getPropertyCSSValue(CSSPropertyFontSize)) {
if (!is<CSSPrimitiveValue>(*fontSize))
style.removeProperty(CSSPropertyFontSize); // Can't make sense of the number. Put no font size.
else if (int legacyFontSize = legacyFontSizeFromCSSValue(document, downcast<CSSPrimitiveValue>(fontSize.get()),
shouldUseFixedFontDefaultSize, UseLegacyFontSizeOnlyIfPixelValuesMatch)) {
m_applyFontSize = String::number(legacyFontSize);
style.removeProperty(CSSPropertyFontSize);
}
}
}
static void diffTextDecorations(MutableStyleProperties& style, CSSPropertyID propertID, CSSValue* refTextDecoration)
{
RefPtr<CSSValue> textDecoration = style.getPropertyCSSValue(propertID);
if (!is<CSSValueList>(textDecoration) || !is<CSSValueList>(refTextDecoration))
return;
RefPtr<CSSValueList> newTextDecoration = downcast<CSSValueList>(*textDecoration).copy();
for (auto& value : downcast<CSSValueList>(*refTextDecoration))
newTextDecoration->removeAll(&value.get());
setTextDecorationProperty(style, newTextDecoration.get(), propertID);
}
static bool fontWeightIsBold(CSSValue& fontWeight)
{
if (!is<CSSPrimitiveValue>(fontWeight))
return false;
auto& primitiveValue = downcast<CSSPrimitiveValue>(fontWeight);
switch (primitiveValue.valueID()) {
case CSSValueNormal:
return false;
case CSSValueBold:
return true;
default:
break;
}
ASSERT(primitiveValue.isNumber());
return primitiveValue.floatValue() >= static_cast<float>(boldThreshold());
}
template<typename T>
static bool fontWeightIsBold(T& style)
{
RefPtr<CSSValue> fontWeight = extractPropertyValue(style, CSSPropertyFontWeight);
return fontWeight && fontWeightIsBold(*fontWeight);
}
template<typename T>
static Ref<MutableStyleProperties> extractPropertiesNotIn(StyleProperties& styleWithRedundantProperties, T& baseStyle)
{
auto result = EditingStyle::create(&styleWithRedundantProperties);
result->removeEquivalentProperties(baseStyle);
ASSERT(result->style());
Ref<MutableStyleProperties> mutableStyle = *result->style();
RefPtr<CSSValue> baseTextDecorationsInEffect = extractPropertyValue(baseStyle, CSSPropertyWebkitTextDecorationsInEffect);
diffTextDecorations(mutableStyle, CSSPropertyTextDecoration, baseTextDecorationsInEffect.get());
diffTextDecorations(mutableStyle, CSSPropertyWebkitTextDecorationsInEffect, baseTextDecorationsInEffect.get());
if (extractPropertyValue(baseStyle, CSSPropertyFontWeight) && fontWeightIsBold(mutableStyle) == fontWeightIsBold(baseStyle))
mutableStyle->removeProperty(CSSPropertyFontWeight);
if (extractPropertyValue(baseStyle, CSSPropertyColor) && equalIgnoringSemanticColor(textColorFromStyle(mutableStyle), textColorFromStyle(baseStyle)))
mutableStyle->removeProperty(CSSPropertyColor);
if (extractPropertyValue(baseStyle, CSSPropertyCaretColor) && equalIgnoringSemanticColor(caretColorFromStyle(mutableStyle), caretColorFromStyle(baseStyle)))
mutableStyle->removeProperty(CSSPropertyCaretColor);
if (extractPropertyValue(baseStyle, CSSPropertyTextAlign)
&& textAlignResolvingStartAndEnd(mutableStyle) == textAlignResolvingStartAndEnd(baseStyle))
mutableStyle->removeProperty(CSSPropertyTextAlign);
if (extractPropertyValue(baseStyle, CSSPropertyBackgroundColor) && equalIgnoringSemanticColor(backgroundColorFromStyle(mutableStyle), backgroundColorFromStyle(baseStyle)))
mutableStyle->removeProperty(CSSPropertyBackgroundColor);
return mutableStyle;
}
template<typename T>
Ref<MutableStyleProperties> getPropertiesNotIn(StyleProperties& styleWithRedundantProperties, T& baseStyle)
{
return extractPropertiesNotIn(styleWithRedundantProperties, baseStyle);
}
static bool isCSSValueLength(CSSPrimitiveValue* value)
{
return value->isFontIndependentLength();
}
int legacyFontSizeFromCSSValue(Document& document, CSSPrimitiveValue* value, bool shouldUseFixedFontDefaultSize, LegacyFontSizeMode mode)
{
if (isCSSValueLength(value)) {
int pixelFontSize = value->intValue(CSSUnitType::CSS_PX);
int legacyFontSize = Style::legacyFontSizeForPixelSize(pixelFontSize, shouldUseFixedFontDefaultSize, document);
// Use legacy font size only if pixel value matches exactly to that of legacy font size.
int cssPrimitiveEquivalent = legacyFontSize - 1 + CSSValueXSmall;
if (mode == AlwaysUseLegacyFontSize || Style::fontSizeForKeyword(cssPrimitiveEquivalent, shouldUseFixedFontDefaultSize, document) == pixelFontSize)
return legacyFontSize;
return 0;
}
if (CSSValueXSmall <= value->valueID() && value->valueID() <= CSSValueWebkitXxxLarge)
return value->valueID() - CSSValueXSmall + 1;
return 0;
}
static bool isTransparentColorValue(CSSValue* value)
{
if (!value)
return true;
if (!is<CSSPrimitiveValue>(*value))
return false;
auto& primitiveValue = downcast<CSSPrimitiveValue>(*value);
if (primitiveValue.isRGBColor())
return !primitiveValue.color().isVisible();
return primitiveValue.valueID() == CSSValueTransparent;
}
bool hasTransparentBackgroundColor(StyleProperties* style)
{
return isTransparentColorValue(style->getPropertyCSSValue(CSSPropertyBackgroundColor).get());
}
RefPtr<CSSValue> backgroundColorInEffect(Node* node)
{
for (Node* ancestor = node; ancestor; ancestor = ancestor->parentNode()) {
if (auto value = ComputedStyleExtractor(ancestor).propertyValue(CSSPropertyBackgroundColor)) {
if (!isTransparentColorValue(value.get()))
return value;
}
}
return nullptr;
}
}