242 lines
11 KiB
C++
242 lines
11 KiB
C++
/*
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* Copyright (C) 2010 Google Inc. All rights reserved.
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* Copyright (C) 2013 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "CSSPropertyNames.h"
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#include "CSSValueKeywords.h"
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#include "StyleProperties.h"
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#include "WritingDirection.h"
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#include <wtf/RefCounted.h>
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#include <wtf/TriState.h>
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#include <wtf/text/WTFString.h>
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namespace WebCore {
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class CSSStyleDeclaration;
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class CSSComputedStyleDeclaration;
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class CSSPrimitiveValue;
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class CSSValue;
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class ComputedStyleExtractor;
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class Document;
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class Element;
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class HTMLElement;
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class MutableStyleProperties;
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class Node;
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class Position;
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class QualifiedName;
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class RenderStyle;
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class StyleProperties;
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class StyledElement;
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class VisibleSelection;
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enum class TextDecorationChange { None, Add, Remove };
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// FIXME: "Keep" should be "Resolve" instead and resolve all generic font family names.
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enum class StandardFontFamilySerializationMode : uint8_t { Keep, Strip };
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class EditingStyle : public RefCounted<EditingStyle> {
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public:
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enum PropertiesToInclude { AllProperties, OnlyEditingInheritableProperties, EditingPropertiesInEffect };
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enum ShouldPreserveWritingDirection { PreserveWritingDirection, DoNotPreserveWritingDirection };
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enum ShouldExtractMatchingStyle { ExtractMatchingStyle, DoNotExtractMatchingStyle };
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static float NoFontDelta;
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static Ref<EditingStyle> create()
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{
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return adoptRef(*new EditingStyle);
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}
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static Ref<EditingStyle> create(Node* node, PropertiesToInclude propertiesToInclude = OnlyEditingInheritableProperties)
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{
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return adoptRef(*new EditingStyle(node, propertiesToInclude));
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}
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static Ref<EditingStyle> create(const Position& position, PropertiesToInclude propertiesToInclude = OnlyEditingInheritableProperties)
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{
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return adoptRef(*new EditingStyle(position, propertiesToInclude));
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}
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static Ref<EditingStyle> create(const StyleProperties* style)
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{
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return adoptRef(*new EditingStyle(style));
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}
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static Ref<EditingStyle> create(const CSSStyleDeclaration* style)
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{
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return adoptRef(*new EditingStyle(style));
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}
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static Ref<EditingStyle> create(CSSPropertyID propertyID, const String& value)
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{
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return adoptRef(*new EditingStyle(propertyID, value));
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}
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static Ref<EditingStyle> create(CSSPropertyID propertyID, CSSValueID value)
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{
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return adoptRef(*new EditingStyle(propertyID, value));
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}
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WEBCORE_EXPORT ~EditingStyle();
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MutableStyleProperties* style() { return m_mutableStyle.get(); }
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Ref<MutableStyleProperties> styleWithResolvedTextDecorations() const;
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std::optional<WritingDirection> textDirection() const;
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bool isEmpty() const;
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void setStyle(RefPtr<MutableStyleProperties>&&);
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void overrideWithStyle(const StyleProperties&);
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void overrideTypingStyleAt(const EditingStyle&, const Position&);
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void clear();
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Ref<EditingStyle> copy() const;
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Ref<EditingStyle> extractAndRemoveBlockProperties();
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Ref<EditingStyle> extractAndRemoveTextDirection();
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void removeBlockProperties();
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void removeStyleAddedByNode(Node*);
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void removeStyleConflictingWithStyleOfNode(Node&);
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template<typename T> void removeEquivalentProperties(T&);
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void collapseTextDecorationProperties();
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enum ShouldIgnoreTextOnlyProperties { IgnoreTextOnlyProperties, DoNotIgnoreTextOnlyProperties };
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TriState triStateOfStyle(EditingStyle*) const;
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TriState triStateOfStyle(const VisibleSelection&) const;
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bool conflictsWithInlineStyleOfElement(StyledElement& element) const { return conflictsWithInlineStyleOfElement(element, nullptr, nullptr); }
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bool conflictsWithInlineStyleOfElement(StyledElement& element, RefPtr<MutableStyleProperties>& newInlineStyle, EditingStyle* extractedStyle) const
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{
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return conflictsWithInlineStyleOfElement(element, &newInlineStyle, extractedStyle);
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}
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bool conflictsWithImplicitStyleOfElement(HTMLElement&, EditingStyle* extractedStyle = nullptr, ShouldExtractMatchingStyle = DoNotExtractMatchingStyle) const;
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bool conflictsWithImplicitStyleOfAttributes(HTMLElement&) const;
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bool extractConflictingImplicitStyleOfAttributes(HTMLElement&, ShouldPreserveWritingDirection, EditingStyle* extractedStyle, Vector<QualifiedName>& conflictingAttributes, ShouldExtractMatchingStyle) const;
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bool styleIsPresentInComputedStyleOfNode(Node&) const;
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static bool elementIsStyledSpanOrHTMLEquivalent(const HTMLElement&);
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void prepareToApplyAt(const Position&, ShouldPreserveWritingDirection = DoNotPreserveWritingDirection);
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void mergeTypingStyle(Document&);
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enum CSSPropertyOverrideMode { OverrideValues, DoNotOverrideValues };
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void mergeInlineStyleOfElement(StyledElement&, CSSPropertyOverrideMode, PropertiesToInclude = AllProperties);
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static Ref<EditingStyle> wrappingStyleForSerialization(Node& context, bool shouldAnnotate, StandardFontFamilySerializationMode);
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void mergeStyleFromRules(StyledElement&);
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void mergeStyleFromRulesForSerialization(StyledElement&, StandardFontFamilySerializationMode);
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void removeStyleFromRulesAndContext(StyledElement&, Node* context);
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void removePropertiesInElementDefaultStyle(Element&);
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void forceInline();
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void addDisplayContents();
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bool convertPositionStyle();
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bool isFloating();
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int legacyFontSize(Document&) const;
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float fontSizeDelta() const { return m_fontSizeDelta; }
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bool hasFontSizeDelta() const { return m_fontSizeDelta != NoFontDelta; }
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bool shouldUseFixedDefaultFontSize() const { return m_shouldUseFixedDefaultFontSize; }
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void setUnderlineChange(TextDecorationChange change) { m_underlineChange = static_cast<unsigned>(change); }
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TextDecorationChange underlineChange() const { return static_cast<TextDecorationChange>(m_underlineChange); }
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void setStrikeThroughChange(TextDecorationChange change) { m_strikeThroughChange = static_cast<unsigned>(change); }
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TextDecorationChange strikeThroughChange() const { return static_cast<TextDecorationChange>(m_strikeThroughChange); }
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WEBCORE_EXPORT bool hasStyle(CSSPropertyID, const String& value);
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WEBCORE_EXPORT static RefPtr<EditingStyle> styleAtSelectionStart(const VisibleSelection&, bool shouldUseBackgroundColorInEffect = false);
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static WritingDirection textDirectionForSelection(const VisibleSelection&, EditingStyle* typingStyle, bool& hasNestedOrMultipleEmbeddings);
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Ref<EditingStyle> inverseTransformColorIfNeeded(Element&);
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private:
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EditingStyle();
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EditingStyle(Node*, PropertiesToInclude);
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EditingStyle(const Position&, PropertiesToInclude);
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WEBCORE_EXPORT explicit EditingStyle(const CSSStyleDeclaration*);
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explicit EditingStyle(const StyleProperties*);
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EditingStyle(CSSPropertyID, const String& value);
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EditingStyle(CSSPropertyID, CSSValueID);
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void init(Node*, PropertiesToInclude);
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void removeTextFillAndStrokeColorsIfNeeded(const RenderStyle*);
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void setProperty(CSSPropertyID, const String& value, bool important = false);
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void extractFontSizeDelta();
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template<typename T> TriState triStateOfStyle(T& styleToCompare, ShouldIgnoreTextOnlyProperties) const;
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bool conflictsWithInlineStyleOfElement(StyledElement&, RefPtr<MutableStyleProperties>* newInlineStyle, EditingStyle* extractedStyle) const;
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void mergeInlineAndImplicitStyleOfElement(StyledElement&, CSSPropertyOverrideMode, PropertiesToInclude, StandardFontFamilySerializationMode);
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void mergeStyle(const StyleProperties*, CSSPropertyOverrideMode);
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RefPtr<MutableStyleProperties> m_mutableStyle;
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unsigned m_shouldUseFixedDefaultFontSize : 1;
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unsigned m_underlineChange : 2;
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unsigned m_strikeThroughChange : 2;
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float m_fontSizeDelta = NoFontDelta;
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friend class HTMLElementEquivalent;
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friend class HTMLAttributeEquivalent;
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friend class HTMLTextDecorationEquivalent;
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};
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class StyleChange {
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public:
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StyleChange() { }
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StyleChange(EditingStyle*, const Position&);
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const StyleProperties* cssStyle() const { return m_cssStyle.get(); }
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bool applyBold() const { return m_applyBold; }
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bool applyItalic() const { return m_applyItalic; }
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bool applyUnderline() const { return m_applyUnderline; }
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bool applyLineThrough() const { return m_applyLineThrough; }
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bool applySubscript() const { return m_applySubscript; }
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bool applySuperscript() const { return m_applySuperscript; }
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bool applyFontColor() const { return m_applyFontColor.length() > 0; }
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bool applyFontFace() const { return m_applyFontFace.length() > 0; }
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bool applyFontSize() const { return m_applyFontSize.length() > 0; }
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String fontColor() { return m_applyFontColor; }
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String fontFace() { return m_applyFontFace; }
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String fontSize() { return m_applyFontSize; }
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bool operator==(const StyleChange&);
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bool operator!=(const StyleChange& other)
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{
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return !(*this == other);
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}
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private:
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void extractTextStyles(Document&, MutableStyleProperties&, bool shouldUseFixedFontDefaultSize);
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RefPtr<MutableStyleProperties> m_cssStyle;
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bool m_applyBold = false;
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bool m_applyItalic = false;
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bool m_applyUnderline = false;
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bool m_applyLineThrough = false;
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bool m_applySubscript = false;
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bool m_applySuperscript = false;
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String m_applyFontColor;
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String m_applyFontFace;
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String m_applyFontSize;
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};
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} // namespace WebCore
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