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/*
* Copyright (C) 2010 Google Inc. All rights reserved.
* Copyright (C) 2013 Apple 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* 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.
*/
#ifndef EditingStyle_h
#define EditingStyle_h
#include "CSSPropertyNames.h"
#include "CSSValueKeywords.h"
#include "StyleProperties.h"
#include "WritingDirection.h"
#include <wtf/Forward.h>
#include <wtf/HashMap.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
#include <wtf/TriState.h>
#include <wtf/Vector.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class CSSStyleDeclaration;
class CSSComputedStyleDeclaration;
class CSSPrimitiveValue;
class CSSValue;
class ComputedStyleExtractor;
class Document;
class Element;
class HTMLElement;
class MutableStyleProperties;
class Node;
class Position;
class QualifiedName;
class RenderStyle;
class StyleProperties;
class StyledElement;
class VisibleSelection;
enum class TextDecorationChange { None, Add, Remove };
class EditingStyle : public RefCounted<EditingStyle> {
public:
enum PropertiesToInclude { AllProperties, OnlyEditingInheritableProperties, EditingPropertiesInEffect };
enum ShouldPreserveWritingDirection { PreserveWritingDirection, DoNotPreserveWritingDirection };
enum ShouldExtractMatchingStyle { ExtractMatchingStyle, DoNotExtractMatchingStyle };
static float NoFontDelta;
static Ref<EditingStyle> create()
{
return adoptRef(*new EditingStyle);
}
static Ref<EditingStyle> create(Node* node, PropertiesToInclude propertiesToInclude = OnlyEditingInheritableProperties)
{
return adoptRef(*new EditingStyle(node, propertiesToInclude));
}
static Ref<EditingStyle> create(const Position& position, PropertiesToInclude propertiesToInclude = OnlyEditingInheritableProperties)
{
return adoptRef(*new EditingStyle(position, propertiesToInclude));
}
static Ref<EditingStyle> create(const StyleProperties* style)
{
return adoptRef(*new EditingStyle(style));
}
static Ref<EditingStyle> create(const CSSStyleDeclaration* style)
{
return adoptRef(*new EditingStyle(style));
}
static Ref<EditingStyle> create(CSSPropertyID propertyID, const String& value)
{
return adoptRef(*new EditingStyle(propertyID, value));
}
static Ref<EditingStyle> create(CSSPropertyID propertyID, CSSValueID value)
{
return adoptRef(*new EditingStyle(propertyID, value));
}
WEBCORE_EXPORT ~EditingStyle();
MutableStyleProperties* style() { return m_mutableStyle.get(); }
Ref<MutableStyleProperties> styleWithResolvedTextDecorations() const;
bool textDirection(WritingDirection&) const;
bool isEmpty() const;
void setStyle(PassRefPtr<MutableStyleProperties>);
void overrideWithStyle(const StyleProperties*);
void overrideTypingStyleAt(const EditingStyle&, const Position&);
void clear();
PassRefPtr<EditingStyle> copy() const;
PassRefPtr<EditingStyle> extractAndRemoveBlockProperties();
PassRefPtr<EditingStyle> extractAndRemoveTextDirection();
void removeBlockProperties();
void removeStyleAddedByNode(Node*);
void removeStyleConflictingWithStyleOfNode(Node*);
template<typename T> void removeEquivalentProperties(const T&);
void collapseTextDecorationProperties();
enum ShouldIgnoreTextOnlyProperties { IgnoreTextOnlyProperties, DoNotIgnoreTextOnlyProperties };
TriState triStateOfStyle(EditingStyle*) const;
TriState triStateOfStyle(const VisibleSelection&) const;
bool conflictsWithInlineStyleOfElement(StyledElement* element) const { return conflictsWithInlineStyleOfElement(element, 0, 0); }
bool conflictsWithInlineStyleOfElement(StyledElement* element, RefPtr<MutableStyleProperties>& newInlineStyle,
EditingStyle* extractedStyle) const
{
return conflictsWithInlineStyleOfElement(element, &newInlineStyle, extractedStyle);
}
bool conflictsWithImplicitStyleOfElement(HTMLElement*, EditingStyle* extractedStyle = nullptr, ShouldExtractMatchingStyle = DoNotExtractMatchingStyle) const;
bool conflictsWithImplicitStyleOfAttributes(HTMLElement*) const;
bool extractConflictingImplicitStyleOfAttributes(HTMLElement*, ShouldPreserveWritingDirection, EditingStyle* extractedStyle,
Vector<QualifiedName>& conflictingAttributes, ShouldExtractMatchingStyle) const;
bool styleIsPresentInComputedStyleOfNode(Node*) const;
static bool elementIsStyledSpanOrHTMLEquivalent(const HTMLElement*);
void prepareToApplyAt(const Position&, ShouldPreserveWritingDirection = DoNotPreserveWritingDirection);
void mergeTypingStyle(Document&);
enum CSSPropertyOverrideMode { OverrideValues, DoNotOverrideValues };
void mergeInlineStyleOfElement(StyledElement*, CSSPropertyOverrideMode, PropertiesToInclude = AllProperties);
static PassRefPtr<EditingStyle> wrappingStyleForSerialization(Node* context, bool shouldAnnotate);
void mergeStyleFromRules(StyledElement*);
void mergeStyleFromRulesForSerialization(StyledElement*);
void removeStyleFromRulesAndContext(StyledElement*, Node* context);
void removePropertiesInElementDefaultStyle(Element*);
void forceInline();
bool convertPositionStyle();
bool isFloating();
int legacyFontSize(Document*) const;
float fontSizeDelta() const { return m_fontSizeDelta; }
bool hasFontSizeDelta() const { return m_fontSizeDelta != NoFontDelta; }
bool shouldUseFixedDefaultFontSize() const { return m_shouldUseFixedDefaultFontSize; }
void setUnderlineChange(TextDecorationChange change) { m_underlineChange = static_cast<unsigned>(change); }
TextDecorationChange underlineChange() const { return static_cast<TextDecorationChange>(m_underlineChange); }
void setStrikeThroughChange(TextDecorationChange change) { m_strikeThroughChange = static_cast<unsigned>(change); }
TextDecorationChange strikeThroughChange() const { return static_cast<TextDecorationChange>(m_strikeThroughChange); }
static PassRefPtr<EditingStyle> styleAtSelectionStart(const VisibleSelection&, bool shouldUseBackgroundColorInEffect = false);
static WritingDirection textDirectionForSelection(const VisibleSelection&, EditingStyle* typingStyle, bool& hasNestedOrMultipleEmbeddings);
private:
EditingStyle();
EditingStyle(Node*, PropertiesToInclude);
EditingStyle(const Position&, PropertiesToInclude);
WEBCORE_EXPORT explicit EditingStyle(const CSSStyleDeclaration*);
explicit EditingStyle(const StyleProperties*);
EditingStyle(CSSPropertyID, const String& value);
EditingStyle(CSSPropertyID, CSSValueID);
void init(Node*, PropertiesToInclude);
void removeTextFillAndStrokeColorsIfNeeded(RenderStyle*);
void setProperty(CSSPropertyID, const String& value, bool important = false);
void extractFontSizeDelta();
template<typename T> TriState triStateOfStyle(T& styleToCompare, ShouldIgnoreTextOnlyProperties) const;
bool conflictsWithInlineStyleOfElement(StyledElement*, RefPtr<MutableStyleProperties>* newInlineStyle, EditingStyle* extractedStyle) const;
void mergeInlineAndImplicitStyleOfElement(StyledElement*, CSSPropertyOverrideMode, PropertiesToInclude);
void mergeStyle(const StyleProperties*, CSSPropertyOverrideMode);
RefPtr<MutableStyleProperties> m_mutableStyle;
unsigned m_shouldUseFixedDefaultFontSize : 1;
unsigned m_underlineChange : 2;
unsigned m_strikeThroughChange : 2;
float m_fontSizeDelta = NoFontDelta;
friend class HTMLElementEquivalent;
friend class HTMLAttributeEquivalent;
friend class HTMLTextDecorationEquivalent;
};
class StyleChange {
public:
StyleChange() { }
StyleChange(EditingStyle*, const Position&);
const StyleProperties* cssStyle() const { return m_cssStyle.get(); }
bool applyBold() const { return m_applyBold; }
bool applyItalic() const { return m_applyItalic; }
bool applyUnderline() const { return m_applyUnderline; }
bool applyLineThrough() const { return m_applyLineThrough; }
bool applySubscript() const { return m_applySubscript; }
bool applySuperscript() const { return m_applySuperscript; }
bool applyFontColor() const { return m_applyFontColor.length() > 0; }
bool applyFontFace() const { return m_applyFontFace.length() > 0; }
bool applyFontSize() const { return m_applyFontSize.length() > 0; }
String fontColor() { return m_applyFontColor; }
String fontFace() { return m_applyFontFace; }
String fontSize() { return m_applyFontSize; }
bool operator==(const StyleChange&);
bool operator!=(const StyleChange& other)
{
return !(*this == other);
}
private:
void extractTextStyles(Document*, MutableStyleProperties&, bool shouldUseFixedFontDefaultSize);
RefPtr<MutableStyleProperties> m_cssStyle;
bool m_applyBold = false;
bool m_applyItalic = false;
bool m_applyUnderline = false;
bool m_applyLineThrough = false;
bool m_applySubscript = false;
bool m_applySuperscript = false;
String m_applyFontColor;
String m_applyFontFace;
String m_applyFontSize;
};
} // namespace WebCore
#endif // EditingStyle_h
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