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239 lines
10 KiB
C++
239 lines
10 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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#ifndef EditingStyle_h
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#define EditingStyle_h
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#include "core/CSSPropertyNames.h"
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#include "core/CSSValueKeywords.h"
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#include "core/editing/WritingDirection.h"
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#include "platform/fonts/FixedPitchFontType.h"
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#include "platform/heap/Handle.h"
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#include "wtf/Forward.h"
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#include "wtf/RefCounted.h"
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#include "wtf/RefPtr.h"
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#include "wtf/TriState.h"
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#include "wtf/Vector.h"
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#include "wtf/text/WTFString.h"
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namespace blink {
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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 ContainerNode;
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class Document;
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class Element;
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class HTMLElement;
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class MutableStylePropertySet;
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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 StylePropertySet;
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class VisibleSelection;
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class EditingStyle FINAL : public RefCountedWillBeGarbageCollectedFinalized<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 PassRefPtrWillBeRawPtr<EditingStyle> create()
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{
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return adoptRefWillBeNoop(new EditingStyle());
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}
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static PassRefPtrWillBeRawPtr<EditingStyle> create(ContainerNode* node, PropertiesToInclude propertiesToInclude = OnlyEditingInheritableProperties)
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{
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return adoptRefWillBeNoop(new EditingStyle(node, propertiesToInclude));
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}
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static PassRefPtrWillBeRawPtr<EditingStyle> create(const Position& position, PropertiesToInclude propertiesToInclude = OnlyEditingInheritableProperties)
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{
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return adoptRefWillBeNoop(new EditingStyle(position, propertiesToInclude));
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}
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static PassRefPtrWillBeRawPtr<EditingStyle> create(const StylePropertySet* style)
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{
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return adoptRefWillBeNoop(new EditingStyle(style));
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}
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static PassRefPtrWillBeRawPtr<EditingStyle> create(CSSPropertyID propertyID, const String& value)
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{
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return adoptRefWillBeNoop(new EditingStyle(propertyID, value));
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}
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~EditingStyle();
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MutableStylePropertySet* style() { return m_mutableStyle.get(); }
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bool textDirection(WritingDirection&) const;
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bool isEmpty() const;
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void overrideWithStyle(const StylePropertySet*);
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void clear();
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PassRefPtrWillBeRawPtr<EditingStyle> copy() const;
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PassRefPtrWillBeRawPtr<EditingStyle> extractAndRemoveBlockProperties();
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PassRefPtrWillBeRawPtr<EditingStyle> extractAndRemoveTextDirection();
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void removeBlockProperties();
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void removeStyleAddedByElement(Element*);
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void removeStyleConflictingWithStyleOfElement(Element*);
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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(HTMLElement* element) const { return conflictsWithInlineStyleOfElement(element, 0, 0); }
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bool conflictsWithInlineStyleOfElement(HTMLElement* element, EditingStyle* extractedStyle, Vector<CSSPropertyID>& conflictingProperties) const
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{
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return conflictsWithInlineStyleOfElement(element, extractedStyle, &conflictingProperties);
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}
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bool conflictsWithImplicitStyleOfElement(HTMLElement*, EditingStyle* extractedStyle = 0, ShouldExtractMatchingStyle = DoNotExtractMatchingStyle) const;
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bool conflictsWithImplicitStyleOfAttributes(HTMLElement*) const;
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bool extractConflictingImplicitStyleOfAttributes(HTMLElement*, ShouldPreserveWritingDirection, EditingStyle* extractedStyle,
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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 mergeTypingStyle(Document*);
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enum CSSPropertyOverrideMode { OverrideValues, DoNotOverrideValues };
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void mergeInlineStyleOfElement(HTMLElement*, CSSPropertyOverrideMode, PropertiesToInclude = AllProperties);
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static PassRefPtrWillBeRawPtr<EditingStyle> wrappingStyleForSerialization(ContainerNode* context, bool shouldAnnotate);
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void mergeStyleFromRules(Element*);
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void mergeStyleFromRulesForSerialization(Element*);
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void removeStyleFromRulesAndContext(Element*, ContainerNode* context);
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void removePropertiesInElementDefaultStyle(Element*);
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void addAbsolutePositioningFromElement(const Element&);
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void forceInline();
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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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static PassRefPtrWillBeRawPtr<EditingStyle> styleAtSelectionStart(const VisibleSelection&, bool shouldUseBackgroundColorInEffect = false);
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static WritingDirection textDirectionForSelection(const VisibleSelection&, EditingStyle* typingStyle, bool& hasNestedOrMultipleEmbeddings);
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void trace(Visitor*);
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private:
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EditingStyle();
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EditingStyle(ContainerNode*, PropertiesToInclude);
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EditingStyle(const Position&, PropertiesToInclude);
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explicit EditingStyle(const StylePropertySet*);
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EditingStyle(CSSPropertyID, const String& value);
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void init(Node*, PropertiesToInclude);
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void removeTextFillAndStrokeColorsIfNeeded(RenderStyle*);
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void setProperty(CSSPropertyID, const String& value, bool important = false);
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void replaceFontSizeByKeywordIfPossible(RenderStyle*, CSSComputedStyleDeclaration*);
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void extractFontSizeDelta();
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TriState triStateOfStyle(CSSStyleDeclaration* styleToCompare, ShouldIgnoreTextOnlyProperties) const;
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bool conflictsWithInlineStyleOfElement(HTMLElement*, EditingStyle* extractedStyle, Vector<CSSPropertyID>* conflictingProperties) const;
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void mergeInlineAndImplicitStyleOfElement(Element*, CSSPropertyOverrideMode, PropertiesToInclude);
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void mergeStyle(const StylePropertySet*, CSSPropertyOverrideMode);
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RefPtrWillBeMember<MutableStylePropertySet> m_mutableStyle;
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FixedPitchFontType m_fixedPitchFontType;
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float m_fontSizeDelta;
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friend class HTMLElementEquivalent;
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friend class HTMLAttributeEquivalent;
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};
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class StyleChange {
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public:
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StyleChange()
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: m_applyBold(false)
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, m_applyItalic(false)
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, m_applyUnderline(false)
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, m_applyLineThrough(false)
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, m_applySubscript(false)
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, m_applySuperscript(false)
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{ }
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StyleChange(EditingStyle*, const Position&);
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String cssStyle() const { return m_cssStyle; }
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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& other)
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{
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return m_cssStyle == other.m_cssStyle
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&& m_applyBold == other.m_applyBold
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&& m_applyItalic == other.m_applyItalic
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&& m_applyUnderline == other.m_applyUnderline
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&& m_applyLineThrough == other.m_applyLineThrough
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&& m_applySubscript == other.m_applySubscript
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&& m_applySuperscript == other.m_applySuperscript
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&& m_applyFontColor == other.m_applyFontColor
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&& m_applyFontFace == other.m_applyFontFace
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&& m_applyFontSize == other.m_applyFontSize;
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}
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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*, MutableStylePropertySet*, FixedPitchFontType);
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String m_cssStyle;
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bool m_applyBold;
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bool m_applyItalic;
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bool m_applyUnderline;
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bool m_applyLineThrough;
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bool m_applySubscript;
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bool m_applySuperscript;
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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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// FIXME: Remove these functions or make them non-global to discourage using CSSStyleDeclaration directly.
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CSSValueID getIdentifierValue(CSSStyleDeclaration*, CSSPropertyID);
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CSSValueID getIdentifierValue(StylePropertySet*, CSSPropertyID);
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} // namespace blink
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#endif // EditingStyle_h
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