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/*
* Copyright (C) 2010 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:
*
* * 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 "WritingDirection.h"
#include <wtf/Forward.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
#include <wtf/Vector.h>
namespace WebCore {
class CSSStyleDeclaration;
class CSSComputedStyleDeclaration;
class CSSMutableStyleDeclaration;
class Document;
class HTMLElement;
class Node;
class Position;
class QualifiedName;
class RenderStyle;
class StyledElement;
enum TriState { FalseTriState, TrueTriState, MixedTriState };
class EditingStyle : public RefCounted<EditingStyle> {
public:
enum PropertiesToInclude { AllProperties, OnlyInheritableProperties };
enum ShouldPreserveWritingDirection { PreserveWritingDirection, DoNotPreserveWritingDirection };
enum ShouldExtractMatchingStyle { ExtractMatchingStyle, DoNotExtractMatchingStyle };
static float NoFontDelta;
static PassRefPtr<EditingStyle> create()
{
return adoptRef(new EditingStyle());
}
static PassRefPtr<EditingStyle> create(Node* node, PropertiesToInclude propertiesToInclude = OnlyInheritableProperties)
{
return adoptRef(new EditingStyle(node, propertiesToInclude));
}
static PassRefPtr<EditingStyle> create(const Position& position)
{
return adoptRef(new EditingStyle(position));
}
static PassRefPtr<EditingStyle> create(const CSSStyleDeclaration* style)
{
return adoptRef(new EditingStyle(style));
}
static PassRefPtr<EditingStyle> create(int propertyID, const String& value)
{
return adoptRef(new EditingStyle(propertyID, value));
}
~EditingStyle();
CSSMutableStyleDeclaration* style() { return m_mutableStyle.get(); }
bool textDirection(WritingDirection&) const;
bool isEmpty() const;
void setStyle(PassRefPtr<CSSMutableStyleDeclaration>);
void overrideWithStyle(const CSSMutableStyleDeclaration*);
void clear();
PassRefPtr<EditingStyle> copy() const;
PassRefPtr<EditingStyle> extractAndRemoveBlockProperties();
PassRefPtr<EditingStyle> extractAndRemoveTextDirection();
void removeBlockProperties();
void removeStyleAddedByNode(Node*);
void removeStyleConflictingWithStyleOfNode(Node*);
void removeNonEditingProperties();
void collapseTextDecorationProperties();
enum ShouldIgnoreTextOnlyProperties { IgnoreTextOnlyProperties, DoNotIgnoreTextOnlyProperties };
TriState triStateOfStyle(CSSStyleDeclaration*, ShouldIgnoreTextOnlyProperties = DoNotIgnoreTextOnlyProperties) const;
bool conflictsWithInlineStyleOfElement(StyledElement* element) const { return conflictsWithInlineStyleOfElement(element, 0, 0); }
bool conflictsWithInlineStyleOfElement(StyledElement* element, EditingStyle* extractedStyle, Vector<CSSPropertyID>& conflictingProperties) const
{
return conflictsWithInlineStyleOfElement(element, extractedStyle, &conflictingProperties);
}
bool conflictsWithImplicitStyleOfElement(HTMLElement*, EditingStyle* extractedStyle = 0, ShouldExtractMatchingStyle = DoNotExtractMatchingStyle) const;
bool conflictsWithImplicitStyleOfAttributes(HTMLElement*) const;
bool extractConflictingImplicitStyleOfAttributes(HTMLElement*, ShouldPreserveWritingDirection, EditingStyle* extractedStyle,
Vector<QualifiedName>& conflictingAttributes, ShouldExtractMatchingStyle) const;
void prepareToApplyAt(const Position&, ShouldPreserveWritingDirection = DoNotPreserveWritingDirection);
void mergeTypingStyle(Document*);
void mergeInlineStyleOfElement(StyledElement*);
float fontSizeDelta() const { return m_fontSizeDelta; }
bool hasFontSizeDelta() const { return m_fontSizeDelta != NoFontDelta; }
bool shouldUseFixedDefaultFontSize() const { return m_shouldUseFixedDefaultFontSize; }
private:
EditingStyle();
EditingStyle(Node*, PropertiesToInclude);
EditingStyle(const Position&);
EditingStyle(const CSSStyleDeclaration*);
EditingStyle(int propertyID, const String& value);
void init(Node*, PropertiesToInclude);
void removeTextFillAndStrokeColorsIfNeeded(RenderStyle*);
void setProperty(int propertyID, const String& value, bool important = false);
void replaceFontSizeByKeywordIfPossible(RenderStyle*, CSSComputedStyleDeclaration*);
void extractFontSizeDelta();
bool conflictsWithInlineStyleOfElement(StyledElement*, EditingStyle* extractedStyle, Vector<CSSPropertyID>* conflictingProperties) const;
void mergeStyle(CSSMutableStyleDeclaration*);
RefPtr<CSSMutableStyleDeclaration> m_mutableStyle;
bool m_shouldUseFixedDefaultFontSize;
float m_fontSizeDelta;
friend class HTMLElementEquivalent;
friend class HTMLAttributeEquivalent;
};
} // namespace WebCore
#endif // EditingStyle_h
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