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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 THIRD_PARTY_BLINK_RENDERER_CORE_EDITING_EDITING_STYLE_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_EDITING_EDITING_STYLE_H_
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/core/css/css_property_names.h"
#include "third_party/blink/renderer/core/css_value_keywords.h"
#include "third_party/blink/renderer/core/editing/forward.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/wtf/forward.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"
namespace blink {
class CSSStyleDeclaration;
class CSSComputedStyleDeclaration;
class ContainerNode;
class Document;
class Element;
class ExecutionContext;
class HTMLElement;
class LocalFrame;
class MutableCSSPropertyValueSet;
class Node;
class QualifiedName;
class ComputedStyle;
class CSSPropertyValueSet;
enum class EditingTriState;
enum class SecureContextMode;
enum class WritingDirection;
class CORE_EXPORT EditingStyle final : public GarbageCollected<EditingStyle> {
public:
enum PropertiesToInclude {
kAllProperties,
kOnlyEditingInheritableProperties,
kEditingPropertiesInEffect
};
enum ShouldPreserveWritingDirection {
kPreserveWritingDirection,
kDoNotPreserveWritingDirection
};
enum ShouldExtractMatchingStyle {
kExtractMatchingStyle,
kDoNotExtractMatchingStyle
};
static constexpr float kNoFontDelta = 0.0f;
EditingStyle() = default;
EditingStyle(ContainerNode*,
PropertiesToInclude = kOnlyEditingInheritableProperties);
EditingStyle(const Position&,
PropertiesToInclude = kOnlyEditingInheritableProperties);
explicit EditingStyle(const CSSPropertyValueSet*);
EditingStyle(CSSPropertyID, const String& value, SecureContextMode);
MutableCSSPropertyValueSet* Style() { return mutable_style_.Get(); }
bool GetTextDirection(WritingDirection&) const;
bool IsEmpty() const;
void OverrideWithStyle(const CSSPropertyValueSet*);
void Clear();
EditingStyle* Copy() const;
EditingStyle* ExtractAndRemoveBlockProperties(const ExecutionContext*);
EditingStyle* ExtractAndRemoveTextDirection(SecureContextMode);
void RemoveBlockProperties(const ExecutionContext*);
void RemoveStyleAddedByElement(Element*);
void RemoveStyleConflictingWithStyleOfElement(Element*);
void CollapseTextDecorationProperties(SecureContextMode);
enum ShouldIgnoreTextOnlyProperties {
kIgnoreTextOnlyProperties,
kDoNotIgnoreTextOnlyProperties
};
EditingTriState TriStateOfStyle(ExecutionContext*,
EditingStyle*,
SecureContextMode) const;
EditingTriState TriStateOfStyle(const VisibleSelection&,
SecureContextMode) const;
bool ConflictsWithInlineStyleOfElement(HTMLElement* element) const {
return ConflictsWithInlineStyleOfElement(element, nullptr, nullptr);
}
bool ConflictsWithInlineStyleOfElement(
HTMLElement* element,
EditingStyle* extracted_style,
Vector<CSSPropertyID>& conflicting_properties) const {
return ConflictsWithInlineStyleOfElement(element, extracted_style,
&conflicting_properties);
}
bool ConflictsWithImplicitStyleOfElement(
HTMLElement*,
EditingStyle* extracted_style = nullptr,
ShouldExtractMatchingStyle = kDoNotExtractMatchingStyle) const;
bool ConflictsWithImplicitStyleOfAttributes(HTMLElement*) const;
bool ExtractConflictingImplicitStyleOfAttributes(
HTMLElement*,
ShouldPreserveWritingDirection,
EditingStyle* extracted_style,
Vector<QualifiedName>& conflicting_attributes,
ShouldExtractMatchingStyle) const;
bool StyleIsPresentInComputedStyleOfNode(Node*) const;
static bool ElementIsStyledSpanOrHTMLEquivalent(const HTMLElement*);
void PrepareToApplyAt(
const Position&,
ShouldPreserveWritingDirection = kDoNotPreserveWritingDirection);
void MergeTypingStyle(Document*);
enum CSSPropertyOverrideMode { kOverrideValues, kDoNotOverrideValues };
void MergeInlineStyleOfElement(HTMLElement*,
CSSPropertyOverrideMode,
PropertiesToInclude = kAllProperties);
void MergeInlineAndImplicitStyleOfElement(Element*,
CSSPropertyOverrideMode,
PropertiesToInclude);
void MergeStyleFromRules(Element*);
void MergeStyleFromRulesForSerialization(Element*);
void RemoveStyleFromRulesAndContext(Element*, ContainerNode* context);
void RemovePropertiesInElementDefaultStyle(Element*);
void ForceInline();
int LegacyFontSize(Document*) const;
float FontSizeDelta() const { return font_size_delta_; }
bool HasFontSizeDelta() const { return font_size_delta_ != kNoFontDelta; }
void SetProperty(CSSPropertyID,
const String& value,
bool important,
SecureContextMode);
void Trace(Visitor*) const;
static EditingTriState SelectionHasStyle(const LocalFrame&,
CSSPropertyID,
const String& value);
private:
void Init(Node*, PropertiesToInclude);
void RemoveInheritedColorsIfNeeded(const ComputedStyle*);
void ReplaceFontSizeByKeywordIfPossible(const ComputedStyle*,
SecureContextMode,
CSSComputedStyleDeclaration*);
void ExtractFontSizeDelta();
EditingTriState TriStateOfStyle(CSSStyleDeclaration* style_to_compare,
ShouldIgnoreTextOnlyProperties,
SecureContextMode) const;
bool ConflictsWithInlineStyleOfElement(
HTMLElement*,
EditingStyle* extracted_style,
Vector<CSSPropertyID>* conflicting_properties) const;
void MergeStyle(const CSSPropertyValueSet*, CSSPropertyOverrideMode);
Member<MutableCSSPropertyValueSet> mutable_style_;
bool is_monospace_font_ = false;
float font_size_delta_ = kNoFontDelta;
bool is_vertical_align_ = false;
friend class HTMLElementEquivalent;
friend class HTMLAttributeEquivalent;
};
class StyleChange {
DISALLOW_NEW();
public:
StyleChange()
: apply_bold_(false),
apply_italic_(false),
apply_underline_(false),
apply_line_through_(false),
apply_subscript_(false),
apply_superscript_(false) {}
StyleChange(EditingStyle*, const Position&);
String CssStyle() const { return css_style_; }
bool ApplyBold() const { return apply_bold_; }
bool ApplyItalic() const { return apply_italic_; }
bool ApplyUnderline() const { return apply_underline_; }
bool ApplyLineThrough() const { return apply_line_through_; }
bool ApplySubscript() const { return apply_subscript_; }
bool ApplySuperscript() const { return apply_superscript_; }
bool ApplyFontColor() const { return apply_font_color_.length() > 0; }
bool ApplyFontFace() const { return apply_font_face_.length() > 0; }
bool ApplyFontSize() const { return apply_font_size_.length() > 0; }
String FontColor() { return apply_font_color_; }
String FontFace() { return apply_font_face_; }
String FontSize() { return apply_font_size_; }
bool operator==(const StyleChange& other) {
return css_style_ == other.css_style_ && apply_bold_ == other.apply_bold_ &&
apply_italic_ == other.apply_italic_ &&
apply_underline_ == other.apply_underline_ &&
apply_line_through_ == other.apply_line_through_ &&
apply_subscript_ == other.apply_subscript_ &&
apply_superscript_ == other.apply_superscript_ &&
apply_font_color_ == other.apply_font_color_ &&
apply_font_face_ == other.apply_font_face_ &&
apply_font_size_ == other.apply_font_size_;
}
bool operator!=(const StyleChange& other) { return !(*this == other); }
private:
void ExtractTextStyles(Document*,
MutableCSSPropertyValueSet*,
bool is_monospace_font);
String css_style_;
bool apply_bold_;
bool apply_italic_;
bool apply_underline_;
bool apply_line_through_;
bool apply_subscript_;
bool apply_superscript_;
String apply_font_color_;
String apply_font_face_;
String apply_font_size_;
};
// FIXME: Remove these functions or make them non-global to discourage using
// CSSStyleDeclaration directly.
CSSValueID GetIdentifierValue(CSSStyleDeclaration*, CSSPropertyID);
CSSValueID GetIdentifierValue(CSSPropertyValueSet*, CSSPropertyID);
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_EDITING_EDITING_STYLE_H_
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