1 /* 2 * Copyright (C) 2005, 2006, 2008 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 COMPUTER, 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 COMPUTER, 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 #ifndef CompositeEditCommand_h 27 #define CompositeEditCommand_h 28 29 #include "core/CSSPropertyNames.h" 30 #include "core/editing/EditCommand.h" 31 #include "core/editing/UndoStep.h" 32 #include "wtf/Vector.h" 33 34 namespace WebCore { 35 36 class EditingStyle; 37 class Element; 38 class HTMLElement; 39 class Text; 40 41 class EditCommandComposition FINAL : public UndoStep { 42 public: 43 static PassRefPtrWillBeRawPtr<EditCommandComposition> create(Document*, const VisibleSelection&, const VisibleSelection&, EditAction); 44 45 virtual bool belongsTo(const LocalFrame&) const OVERRIDE; 46 virtual void unapply() OVERRIDE; 47 virtual void reapply() OVERRIDE; 48 virtual EditAction editingAction() const OVERRIDE { return m_editAction; } 49 void append(SimpleEditCommand*); 50 bool wasCreateLinkCommand() const { return m_editAction == EditActionCreateLink; } 51 52 const VisibleSelection& startingSelection() const { return m_startingSelection; } 53 const VisibleSelection& endingSelection() const { return m_endingSelection; } 54 void setStartingSelection(const VisibleSelection&); 55 void setEndingSelection(const VisibleSelection&); 56 Element* startingRootEditableElement() const { return m_startingRootEditableElement.get(); } 57 Element* endingRootEditableElement() const { return m_endingRootEditableElement.get(); } 58 59 virtual void trace(Visitor*) OVERRIDE; 60 61 private: 62 EditCommandComposition(Document*, const VisibleSelection& startingSelection, const VisibleSelection& endingSelection, EditAction); 63 64 RefPtrWillBeMember<Document> m_document; 65 VisibleSelection m_startingSelection; 66 VisibleSelection m_endingSelection; 67 WillBeHeapVector<RefPtrWillBeMember<SimpleEditCommand> > m_commands; 68 RefPtrWillBeMember<Element> m_startingRootEditableElement; 69 RefPtrWillBeMember<Element> m_endingRootEditableElement; 70 EditAction m_editAction; 71 }; 72 73 class CompositeEditCommand : public EditCommand { 74 public: 75 virtual ~CompositeEditCommand(); 76 77 void apply(); 78 bool isFirstCommand(EditCommand* command) { return !m_commands.isEmpty() && m_commands.first() == command; } 79 EditCommandComposition* composition() { return m_composition.get(); } 80 EditCommandComposition* ensureComposition(); 81 82 virtual bool isTypingCommand() const; 83 virtual bool preservesTypingStyle() const; 84 virtual void setShouldRetainAutocorrectionIndicator(bool); 85 virtual bool shouldStopCaretBlinking() const { return false; } 86 87 virtual void trace(Visitor*) OVERRIDE; 88 89 protected: 90 explicit CompositeEditCommand(Document&); 91 92 // 93 // sugary-sweet convenience functions to help create and apply edit commands in composite commands 94 // 95 void appendNode(PassRefPtrWillBeRawPtr<Node>, PassRefPtrWillBeRawPtr<ContainerNode> parent); 96 void applyCommandToComposite(PassRefPtrWillBeRawPtr<EditCommand>); 97 void applyCommandToComposite(PassRefPtrWillBeRawPtr<CompositeEditCommand>, const VisibleSelection&); 98 void applyStyle(const EditingStyle*, EditAction = EditActionChangeAttributes); 99 void applyStyle(const EditingStyle*, const Position& start, const Position& end, EditAction = EditActionChangeAttributes); 100 void applyStyledElement(PassRefPtrWillBeRawPtr<Element>); 101 void removeStyledElement(PassRefPtrWillBeRawPtr<Element>); 102 void deleteSelection(bool smartDelete = false, bool mergeBlocksAfterDelete = true, bool expandForSpecialElements = true, bool sanitizeMarkup = true); 103 void deleteSelection(const VisibleSelection&, bool smartDelete = false, bool mergeBlocksAfterDelete = true, bool expandForSpecialElements = true, bool sanitizeMarkup = true); 104 virtual void deleteTextFromNode(PassRefPtrWillBeRawPtr<Text>, unsigned offset, unsigned count); 105 bool isRemovableBlock(const Node*); 106 void insertNodeAfter(PassRefPtrWillBeRawPtr<Node>, PassRefPtrWillBeRawPtr<Node> refChild); 107 void insertNodeAt(PassRefPtrWillBeRawPtr<Node>, const Position&); 108 void insertNodeAtTabSpanPosition(PassRefPtrWillBeRawPtr<Node>, const Position&); 109 void insertNodeBefore(PassRefPtrWillBeRawPtr<Node>, PassRefPtrWillBeRawPtr<Node> refChild, ShouldAssumeContentIsAlwaysEditable = DoNotAssumeContentIsAlwaysEditable); 110 void insertParagraphSeparator(bool useDefaultParagraphElement = false, bool pasteBlockqutoeIntoUnquotedArea = false); 111 void insertTextIntoNode(PassRefPtrWillBeRawPtr<Text>, unsigned offset, const String& text); 112 void mergeIdenticalElements(PassRefPtrWillBeRawPtr<Element>, PassRefPtrWillBeRawPtr<Element>); 113 void rebalanceWhitespace(); 114 void rebalanceWhitespaceAt(const Position&); 115 void rebalanceWhitespaceOnTextSubstring(PassRefPtrWillBeRawPtr<Text>, int startOffset, int endOffset); 116 void prepareWhitespaceAtPositionForSplit(Position&); 117 void replaceCollapsibleWhitespaceWithNonBreakingSpaceIfNeeded(const VisiblePosition&); 118 bool canRebalance(const Position&) const; 119 bool shouldRebalanceLeadingWhitespaceFor(const String&) const; 120 void removeCSSProperty(PassRefPtrWillBeRawPtr<Element>, CSSPropertyID); 121 void removeNodeAttribute(PassRefPtrWillBeRawPtr<Element>, const QualifiedName& attribute); 122 void removeChildrenInRange(PassRefPtrWillBeRawPtr<Node>, unsigned from, unsigned to); 123 virtual void removeNode(PassRefPtrWillBeRawPtr<Node>, ShouldAssumeContentIsAlwaysEditable = DoNotAssumeContentIsAlwaysEditable); 124 HTMLElement* replaceElementWithSpanPreservingChildrenAndAttributes(PassRefPtrWillBeRawPtr<HTMLElement>); 125 void removeNodePreservingChildren(PassRefPtrWillBeRawPtr<Node>, ShouldAssumeContentIsAlwaysEditable = DoNotAssumeContentIsAlwaysEditable); 126 void removeNodeAndPruneAncestors(PassRefPtrWillBeRawPtr<Node>, Node* excludeNode = 0); 127 void moveRemainingSiblingsToNewParent(Node*, Node* pastLastNodeToMove, PassRefPtrWillBeRawPtr<Element> prpNewParent); 128 void updatePositionForNodeRemovalPreservingChildren(Position&, Node&); 129 void prune(PassRefPtrWillBeRawPtr<Node>, Node* excludeNode = 0); 130 void replaceTextInNode(PassRefPtrWillBeRawPtr<Text>, unsigned offset, unsigned count, const String& replacementText); 131 Position replaceSelectedTextInNode(const String&); 132 void replaceTextInNodePreservingMarkers(PassRefPtrWillBeRawPtr<Text>, unsigned offset, unsigned count, const String& replacementText); 133 Position positionOutsideTabSpan(const Position&); 134 void setNodeAttribute(PassRefPtrWillBeRawPtr<Element>, const QualifiedName& attribute, const AtomicString& value); 135 void splitElement(PassRefPtrWillBeRawPtr<Element>, PassRefPtrWillBeRawPtr<Node> atChild); 136 void splitTextNode(PassRefPtrWillBeRawPtr<Text>, unsigned offset); 137 void splitTextNodeContainingElement(PassRefPtrWillBeRawPtr<Text>, unsigned offset); 138 void wrapContentsInDummySpan(PassRefPtrWillBeRawPtr<Element>); 139 140 void deleteInsignificantText(PassRefPtrWillBeRawPtr<Text>, unsigned start, unsigned end); 141 void deleteInsignificantText(const Position& start, const Position& end); 142 void deleteInsignificantTextDownstream(const Position&); 143 144 PassRefPtrWillBeRawPtr<Node> appendBlockPlaceholder(PassRefPtrWillBeRawPtr<Element>); 145 PassRefPtrWillBeRawPtr<Node> insertBlockPlaceholder(const Position&); 146 PassRefPtrWillBeRawPtr<Node> addBlockPlaceholderIfNeeded(Element*); 147 void removePlaceholderAt(const Position&); 148 149 PassRefPtrWillBeRawPtr<Element> insertNewDefaultParagraphElementAt(const Position&); 150 151 PassRefPtrWillBeRawPtr<Element> moveParagraphContentsToNewBlockIfNecessary(const Position&); 152 153 void pushAnchorElementDown(Node*); 154 155 // FIXME: preserveSelection and preserveStyle should be enums 156 void moveParagraph(const VisiblePosition&, const VisiblePosition&, const VisiblePosition&, bool preserveSelection = false, bool preserveStyle = true, Node* constrainingAncestor = 0); 157 void moveParagraphs(const VisiblePosition&, const VisiblePosition&, const VisiblePosition&, bool preserveSelection = false, bool preserveStyle = true, Node* constrainingAncestor = 0); 158 void moveParagraphWithClones(const VisiblePosition& startOfParagraphToMove, const VisiblePosition& endOfParagraphToMove, Element* blockElement, Node* outerNode); 159 void cloneParagraphUnderNewElement(const Position& start, const Position& end, Node* outerNode, Element* blockElement); 160 void cleanupAfterDeletion(VisiblePosition destination = VisiblePosition()); 161 162 bool breakOutOfEmptyListItem(); 163 bool breakOutOfEmptyMailBlockquotedParagraph(); 164 165 Position positionAvoidingSpecialElementBoundary(const Position&); 166 167 PassRefPtrWillBeRawPtr<Node> splitTreeToNode(Node*, Node*, bool splitAncestor = false); 168 169 WillBeHeapVector<RefPtrWillBeMember<EditCommand> > m_commands; 170 171 private: 172 virtual bool isCompositeEditCommand() const OVERRIDE FINAL { return true; } 173 174 RefPtrWillBeMember<EditCommandComposition> m_composition; 175 }; 176 177 DEFINE_TYPE_CASTS(CompositeEditCommand, EditCommand, command, command->isCompositeEditCommand(), command.isCompositeEditCommand()); 178 179 } // namespace WebCore 180 181 #endif // CompositeEditCommand_h 182