1 | /* |
2 | * Copyright (C) 2005, 2006, 2008, 2009 Apple Inc. All rights reserved. |
3 | * |
4 | * Redistribution and use in source and binary forms, with or without |
5 | * modification, are permitted provided that the following conditions |
6 | * are met: |
7 | * 1. Redistributions of source code must retain the above copyright |
8 | * notice, this list of conditions and the following disclaimer. |
9 | * 2. Redistributions in binary form must reproduce the above copyright |
10 | * notice, this list of conditions and the following disclaimer in the |
11 | * documentation and/or other materials provided with the distribution. |
12 | * |
13 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
14 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
15 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
16 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
17 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
18 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
19 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
20 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
21 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
23 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
24 | */ |
25 | |
26 | #pragma once |
27 | |
28 | #include "CompositeEditCommand.h" |
29 | #include "HTMLElement.h" |
30 | #include "WritingDirection.h" |
31 | |
32 | namespace WebCore { |
33 | |
34 | class CSSPrimitiveValue; |
35 | class EditingStyle; |
36 | class StyleChange; |
37 | |
38 | enum ShouldIncludeTypingStyle { |
39 | IncludeTypingStyle, |
40 | IgnoreTypingStyle |
41 | }; |
42 | |
43 | class ApplyStyleCommand : public CompositeEditCommand { |
44 | public: |
45 | enum EPropertyLevel { PropertyDefault, ForceBlockProperties }; |
46 | enum InlineStyleRemovalMode { RemoveIfNeeded, RemoveAlways, RemoveNone }; |
47 | enum EAddStyledElement { AddStyledElement, DoNotAddStyledElement }; |
48 | typedef bool (*IsInlineElementToRemoveFunction)(const Element*); |
49 | |
50 | static Ref<ApplyStyleCommand> create(Document& document, const EditingStyle* style, EditAction action = EditAction::ChangeAttributes, EPropertyLevel level = PropertyDefault) |
51 | { |
52 | return adoptRef(*new ApplyStyleCommand(document, style, action, level)); |
53 | } |
54 | static Ref<ApplyStyleCommand> create(Document& document, const EditingStyle* style, const Position& start, const Position& end, EditAction action = EditAction::ChangeAttributes, EPropertyLevel level = PropertyDefault) |
55 | { |
56 | return adoptRef(*new ApplyStyleCommand(document, style, start, end, action, level)); |
57 | } |
58 | static Ref<ApplyStyleCommand> create(Ref<Element>&& element, bool removeOnly = false, EditAction action = EditAction::ChangeAttributes) |
59 | { |
60 | return adoptRef(*new ApplyStyleCommand(WTFMove(element), removeOnly, action)); |
61 | } |
62 | static Ref<ApplyStyleCommand> create(Document& document, const EditingStyle* style, IsInlineElementToRemoveFunction isInlineElementToRemoveFunction, EditAction action = EditAction::ChangeAttributes) |
63 | { |
64 | return adoptRef(*new ApplyStyleCommand(document, style, isInlineElementToRemoveFunction, action)); |
65 | } |
66 | |
67 | private: |
68 | ApplyStyleCommand(Document&, const EditingStyle*, EditAction, EPropertyLevel); |
69 | ApplyStyleCommand(Document&, const EditingStyle*, const Position& start, const Position& end, EditAction, EPropertyLevel); |
70 | ApplyStyleCommand(Ref<Element>&&, bool removeOnly, EditAction); |
71 | ApplyStyleCommand(Document&, const EditingStyle*, bool (*isInlineElementToRemove)(const Element*), EditAction); |
72 | |
73 | void doApply() override; |
74 | bool shouldDispatchInputEvents() const final { return false; } |
75 | |
76 | // style-removal helpers |
77 | bool isStyledInlineElementToRemove(Element*) const; |
78 | bool shouldApplyInlineStyleToRun(EditingStyle&, Node* runStart, Node* pastEndNode); |
79 | void removeConflictingInlineStyleFromRun(EditingStyle&, RefPtr<Node>& runStart, RefPtr<Node>& runEnd, Node* pastEndNode); |
80 | bool removeInlineStyleFromElement(EditingStyle&, HTMLElement&, InlineStyleRemovalMode = RemoveIfNeeded, EditingStyle* = nullptr); |
81 | inline bool shouldRemoveInlineStyleFromElement(EditingStyle& style, HTMLElement& element) {return removeInlineStyleFromElement(style, element, RemoveNone);} |
82 | void replaceWithSpanOrRemoveIfWithoutAttributes(HTMLElement&); |
83 | bool removeImplicitlyStyledElement(EditingStyle&, HTMLElement&, InlineStyleRemovalMode, EditingStyle* ); |
84 | bool removeCSSStyle(EditingStyle&, HTMLElement&, InlineStyleRemovalMode = RemoveIfNeeded, EditingStyle* = nullptr); |
85 | HTMLElement* highestAncestorWithConflictingInlineStyle(EditingStyle&, Node*); |
86 | void applyInlineStyleToPushDown(Node&, EditingStyle*); |
87 | void pushDownInlineStyleAroundNode(EditingStyle&, Node*); |
88 | void removeInlineStyle(EditingStyle&, const Position& start, const Position& end); |
89 | bool nodeFullySelected(Element&, const Position& start, const Position& end) const; |
90 | bool nodeFullyUnselected(Element&, const Position& start, const Position& end) const; |
91 | |
92 | // style-application helpers |
93 | void applyBlockStyle(EditingStyle&); |
94 | void applyRelativeFontStyleChange(EditingStyle*); |
95 | void applyInlineStyle(EditingStyle&); |
96 | void fixRangeAndApplyInlineStyle(EditingStyle&, const Position& start, const Position& end); |
97 | void applyInlineStyleToNodeRange(EditingStyle&, Node& startNode, Node* pastEndNode); |
98 | void addBlockStyle(const StyleChange&, HTMLElement&); |
99 | void addInlineStyleIfNeeded(EditingStyle*, Node& start, Node& end, EAddStyledElement = AddStyledElement); |
100 | Position positionToComputeInlineStyleChange(Node&, RefPtr<Node>& dummyElement); |
101 | void applyInlineStyleChange(Node& startNode, Node& endNode, StyleChange&, EAddStyledElement); |
102 | void splitTextAtStart(const Position& start, const Position& end); |
103 | void splitTextAtEnd(const Position& start, const Position& end); |
104 | void splitTextElementAtStart(const Position& start, const Position& end); |
105 | void splitTextElementAtEnd(const Position& start, const Position& end); |
106 | bool shouldSplitTextElement(Element*, EditingStyle&); |
107 | bool isValidCaretPositionInTextNode(const Position& position); |
108 | bool mergeStartWithPreviousIfIdentical(const Position& start, const Position& end); |
109 | bool mergeEndWithNextIfIdentical(const Position& start, const Position& end); |
110 | void cleanupUnstyledAppleStyleSpans(ContainerNode* dummySpanAncestor); |
111 | |
112 | void surroundNodeRangeWithElement(Node& start, Node& end, Ref<Element>&&); |
113 | float computedFontSize(Node*); |
114 | void joinChildTextNodes(Node*, const Position& start, const Position& end); |
115 | |
116 | HTMLElement* splitAncestorsWithUnicodeBidi(Node*, bool before, WritingDirection allowedDirection); |
117 | void removeEmbeddingUpToEnclosingBlock(Node* node, Node* unsplitAncestor); |
118 | |
119 | void updateStartEnd(const Position& newStart, const Position& newEnd); |
120 | Position startPosition(); |
121 | Position endPosition(); |
122 | |
123 | RefPtr<EditingStyle> m_style; |
124 | EPropertyLevel m_propertyLevel; |
125 | Position m_start; |
126 | Position m_end; |
127 | bool m_useEndingSelection; |
128 | RefPtr<Element> m_styledInlineElement; |
129 | bool m_removeOnly; |
130 | IsInlineElementToRemoveFunction m_isInlineElementToRemoveFunction { nullptr }; |
131 | }; |
132 | |
133 | enum ShouldStyleAttributeBeEmpty { AllowNonEmptyStyleAttribute, StyleAttributeShouldBeEmpty }; |
134 | bool isEmptyFontTag(const Element*, ShouldStyleAttributeBeEmpty = StyleAttributeShouldBeEmpty); |
135 | bool isLegacyAppleStyleSpan(const Node*); |
136 | bool isStyleSpanOrSpanWithOnlyStyleAttribute(const Element&); |
137 | Ref<HTMLElement> createStyleSpanElement(Document&); |
138 | |
139 | } // namespace WebCore |
140 | |