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/*
* Copyright (C) 2005, 2006, 2008, 2009 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:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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 ApplyStyleCommand_h
#define ApplyStyleCommand_h
#include "core/editing/WritingDirection.h"
#include "core/editing/commands/CompositeEditCommand.h"
#include "core/html/HTMLElement.h"
namespace blink {
class EditingStyle;
class HTMLSpanElement;
class StyleChange;
enum ShouldIncludeTypingStyle { IncludeTypingStyle, IgnoreTypingStyle };
class CORE_EXPORT ApplyStyleCommand final : public CompositeEditCommand {
public:
enum EPropertyLevel { PropertyDefault, ForceBlockProperties };
enum InlineStyleRemovalMode { RemoveIfNeeded, RemoveAlways, RemoveNone };
enum EAddStyledElement { AddStyledElement, DoNotAddStyledElement };
typedef bool (*IsInlineElementToRemoveFunction)(const Element*);
static ApplyStyleCommand* create(Document& document,
const EditingStyle* style,
InputEvent::InputType inputType,
EPropertyLevel level = PropertyDefault) {
return new ApplyStyleCommand(document, style, inputType, level);
}
static ApplyStyleCommand* create(Document& document,
const EditingStyle* style,
const Position& start,
const Position& end) {
return new ApplyStyleCommand(document, style, start, end);
}
static ApplyStyleCommand* create(Element* element, bool removeOnly) {
return new ApplyStyleCommand(element, removeOnly);
}
static ApplyStyleCommand* create(
Document& document,
const EditingStyle* style,
IsInlineElementToRemoveFunction isInlineElementToRemoveFunction,
InputEvent::InputType inputType) {
return new ApplyStyleCommand(document, style,
isInlineElementToRemoveFunction, inputType);
}
DECLARE_VIRTUAL_TRACE();
private:
ApplyStyleCommand(Document&,
const EditingStyle*,
InputEvent::InputType,
EPropertyLevel);
ApplyStyleCommand(Document&,
const EditingStyle*,
const Position& start,
const Position& end);
ApplyStyleCommand(Element*, bool removeOnly);
ApplyStyleCommand(Document&,
const EditingStyle*,
bool (*isInlineElementToRemove)(const Element*),
InputEvent::InputType);
void doApply(EditingState*) override;
InputEvent::InputType inputType() const override;
// style-removal helpers
bool isStyledInlineElementToRemove(Element*) const;
bool shouldApplyInlineStyleToRun(EditingStyle*,
Node* runStart,
Node* pastEndNode);
void removeConflictingInlineStyleFromRun(EditingStyle*,
Member<Node>& runStart,
Member<Node>& runEnd,
Node* pastEndNode,
EditingState*);
bool removeInlineStyleFromElement(EditingStyle*,
HTMLElement*,
EditingState*,
InlineStyleRemovalMode = RemoveIfNeeded,
EditingStyle* extractedStyle = nullptr);
inline bool shouldRemoveInlineStyleFromElement(EditingStyle* style,
HTMLElement* element) {
return removeInlineStyleFromElement(style, element, ASSERT_NO_EDITING_ABORT,
RemoveNone);
}
void replaceWithSpanOrRemoveIfWithoutAttributes(HTMLElement*, EditingState*);
bool removeImplicitlyStyledElement(EditingStyle*,
HTMLElement*,
InlineStyleRemovalMode,
EditingStyle* extractedStyle,
EditingState*);
bool removeCSSStyle(EditingStyle*,
HTMLElement*,
EditingState*,
InlineStyleRemovalMode = RemoveIfNeeded,
EditingStyle* extractedStyle = nullptr);
HTMLElement* highestAncestorWithConflictingInlineStyle(EditingStyle*, Node*);
void applyInlineStyleToPushDown(Node*, EditingStyle*, EditingState*);
void pushDownInlineStyleAroundNode(EditingStyle*, Node*, EditingState*);
void removeInlineStyle(EditingStyle*,
const Position& start,
const Position& end,
EditingState*);
bool elementFullySelected(HTMLElement&,
const Position& start,
const Position& end) const;
// style-application helpers
void applyBlockStyle(EditingStyle*, EditingState*);
void applyRelativeFontStyleChange(EditingStyle*, EditingState*);
void applyInlineStyle(EditingStyle*, EditingState*);
void fixRangeAndApplyInlineStyle(EditingStyle*,
const Position& start,
const Position& end,
EditingState*);
void applyInlineStyleToNodeRange(EditingStyle*,
Node* startNode,
Node* pastEndNode,
EditingState*);
void addBlockStyle(const StyleChange&, HTMLElement*);
void addInlineStyleIfNeeded(EditingStyle*,
Node* start,
Node* end,
EditingState*);
Position positionToComputeInlineStyleChange(
Node*,
Member<HTMLSpanElement>& dummyElement,
EditingState*);
void applyInlineStyleChange(Node* startNode,
Node* endNode,
StyleChange&,
EAddStyledElement,
EditingState*);
void splitTextAtStart(const Position& start, const Position& end);
void splitTextAtEnd(const Position& start, const Position& end);
void splitTextElementAtStart(const Position& start, const Position& end);
void splitTextElementAtEnd(const Position& start, const Position& end);
bool shouldSplitTextElement(Element*, EditingStyle*);
bool isValidCaretPositionInTextNode(const Position&);
bool mergeStartWithPreviousIfIdentical(const Position& start,
const Position& end,
EditingState*);
bool mergeEndWithNextIfIdentical(const Position& start,
const Position& end,
EditingState*);
void cleanupUnstyledAppleStyleSpans(ContainerNode* dummySpanAncestor,
EditingState*);
void surroundNodeRangeWithElement(Node* start,
Node* end,
Element*,
EditingState*);
float computedFontSize(Node*);
void joinChildTextNodes(ContainerNode*,
const Position& start,
const Position& end);
HTMLElement* splitAncestorsWithUnicodeBidi(Node*,
bool before,
WritingDirection allowedDirection);
void removeEmbeddingUpToEnclosingBlock(Node*,
HTMLElement* unsplitAncestor,
EditingState*);
void updateStartEnd(const Position& newStart, const Position& newEnd);
Position startPosition();
Position endPosition();
Member<EditingStyle> m_style;
InputEvent::InputType m_inputType;
EPropertyLevel m_propertyLevel;
Position m_start;
Position m_end;
bool m_useEndingSelection;
Member<Element> m_styledInlineElement;
bool m_removeOnly;
IsInlineElementToRemoveFunction m_isInlineElementToRemoveFunction;
};
enum ShouldStyleAttributeBeEmpty {
AllowNonEmptyStyleAttribute,
StyleAttributeShouldBeEmpty
};
bool isEmptyFontTag(const Element*,
ShouldStyleAttributeBeEmpty = StyleAttributeShouldBeEmpty);
bool isLegacyAppleHTMLSpanElement(const Node*);
bool isStyleSpanOrSpanWithOnlyStyleAttribute(const Element*);
} // namespace blink
#endif
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