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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 THIRD_PARTY_BLINK_RENDERER_CORE_EDITING_COMMANDS_APPLY_STYLE_COMMAND_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_EDITING_COMMANDS_APPLY_STYLE_COMMAND_H_
#include "third_party/blink/renderer/core/editing/commands/composite_edit_command.h"
#include "third_party/blink/renderer/core/html/html_element.h"
namespace blink {
class EditingStyle;
class HTMLSpanElement;
class StyleChange;
enum ShouldIncludeTypingStyle { kIncludeTypingStyle, kIgnoreTypingStyle };
enum class WritingDirection;
class CORE_EXPORT ApplyStyleCommand final : public CompositeEditCommand {
public:
enum PropertyLevel { kPropertyDefault, kForceBlockProperties };
enum InlineStyleRemovalMode { kRemoveIfNeeded, kRemoveAlways, kRemoveNone };
enum AddStyledElement { kAddStyledElement, kDoNotAddStyledElement };
typedef bool (*IsInlineElementToRemoveFunction)(const Element*);
ApplyStyleCommand(Document&,
const EditingStyle*,
InputEvent::InputType,
PropertyLevel = kPropertyDefault);
ApplyStyleCommand(Document&,
const EditingStyle*,
const Position& start,
const Position& end);
ApplyStyleCommand(Element*, bool remove_only);
ApplyStyleCommand(Document&,
const EditingStyle*,
bool (*is_inline_element_to_remove)(const Element*),
InputEvent::InputType);
void Trace(Visitor*) override;
private:
void DoApply(EditingState*) override;
InputEvent::InputType GetInputType() const override;
// style-removal helpers
bool IsStyledInlineElementToRemove(Element*) const;
bool ShouldApplyInlineStyleToRun(EditingStyle*,
Node* run_start,
Node* past_end_node);
void RemoveConflictingInlineStyleFromRun(EditingStyle*,
Member<Node>& run_start,
Member<Node>& run_end,
Node* past_end_node,
EditingState*);
bool RemoveInlineStyleFromElement(EditingStyle*,
HTMLElement*,
EditingState*,
InlineStyleRemovalMode = kRemoveIfNeeded,
EditingStyle* extracted_style = nullptr);
inline bool ShouldRemoveInlineStyleFromElement(EditingStyle* style,
HTMLElement* element) {
return RemoveInlineStyleFromElement(style, element, ASSERT_NO_EDITING_ABORT,
kRemoveNone);
}
void ReplaceWithSpanOrRemoveIfWithoutAttributes(HTMLElement*, EditingState*);
bool RemoveImplicitlyStyledElement(EditingStyle*,
HTMLElement*,
InlineStyleRemovalMode,
EditingStyle* extracted_style,
EditingState*);
bool RemoveCSSStyle(EditingStyle*,
HTMLElement*,
EditingState*,
InlineStyleRemovalMode = kRemoveIfNeeded,
EditingStyle* extracted_style = nullptr);
HTMLElement* HighestAncestorWithConflictingInlineStyle(EditingStyle*, Node*);
void ApplyInlineStyleToPushDown(Node*, EditingStyle*, EditingState*);
void PushDownInlineStyleAroundNode(EditingStyle*, Node*, EditingState*);
void RemoveInlineStyle(EditingStyle*,
const EphemeralRange& range,
EditingState*);
bool ElementFullySelected(const 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* start_node,
Node* past_end_node,
EditingState*);
void AddBlockStyle(const StyleChange&, HTMLElement*);
void AddInlineStyleIfNeeded(EditingStyle*,
Node* start,
Node* end,
EditingState*);
Position PositionToComputeInlineStyleChange(
Node*,
Member<HTMLSpanElement>& dummy_element,
EditingState*);
void ApplyInlineStyleChange(Node* start_node,
Node* end_node,
StyleChange&,
AddStyledElement,
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* dummy_span_ancestor,
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 allowed_direction);
void RemoveEmbeddingUpToEnclosingBlock(Node*,
HTMLElement* unsplit_ancestor,
EditingState*);
void UpdateStartEnd(const EphemeralRange&);
Position StartPosition();
Position EndPosition();
const Member<EditingStyle> style_;
const InputEvent::InputType input_type_;
const PropertyLevel property_level_;
Position start_;
Position end_;
bool use_ending_selection_;
const Member<Element> styled_inline_element_;
const bool remove_only_;
IsInlineElementToRemoveFunction const is_inline_element_to_remove_function_;
};
enum ShouldStyleAttributeBeEmpty {
kAllowNonEmptyStyleAttribute,
kStyleAttributeShouldBeEmpty
};
bool IsEmptyFontTag(const Element*,
ShouldStyleAttributeBeEmpty = kStyleAttributeShouldBeEmpty);
bool IsLegacyAppleHTMLSpanElement(const Node*);
bool IsStyleSpanOrSpanWithOnlyStyleAttribute(const Element*);
} // namespace blink
#endif
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