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 EditCommand_h 27 #define EditCommand_h 28 29 #include "core/editing/EditAction.h" 30 #include "core/editing/VisibleSelection.h" 31 32 #ifndef NDEBUG 33 #include "wtf/HashSet.h" 34 #endif 35 36 namespace WebCore { 37 38 class CompositeEditCommand; 39 class Document; 40 class Element; 41 42 class EditCommand : public RefCounted<EditCommand> { 43 public: 44 virtual ~EditCommand(); 45 46 void setParent(CompositeEditCommand*); 47 48 virtual EditAction editingAction() const; 49 startingSelection()50 const VisibleSelection& startingSelection() const { return m_startingSelection; } endingSelection()51 const VisibleSelection& endingSelection() const { return m_endingSelection; } 52 isSimpleEditCommand()53 virtual bool isSimpleEditCommand() const { return false; } isCompositeEditCommand()54 virtual bool isCompositeEditCommand() const { return false; } isEditCommandComposition()55 virtual bool isEditCommandComposition() const { return false; } isTopLevelCommand()56 bool isTopLevelCommand() const { return !m_parent; } 57 58 virtual void doApply() = 0; 59 60 protected: 61 explicit EditCommand(Document&); 62 EditCommand(Document*, const VisibleSelection&, const VisibleSelection&); 63 document()64 Document& document() const { return *m_document.get(); } parent()65 CompositeEditCommand* parent() const { return m_parent; } 66 void setStartingSelection(const VisibleSelection&); 67 void setEndingSelection(const VisibleSelection&); 68 69 private: 70 RefPtr<Document> m_document; 71 VisibleSelection m_startingSelection; 72 VisibleSelection m_endingSelection; 73 CompositeEditCommand* m_parent; 74 }; 75 76 enum ShouldAssumeContentIsAlwaysEditable { 77 AssumeContentIsAlwaysEditable, 78 DoNotAssumeContentIsAlwaysEditable, 79 }; 80 81 class SimpleEditCommand : public EditCommand { 82 public: 83 virtual void doUnapply() = 0; 84 virtual void doReapply(); // calls doApply() 85 86 protected: SimpleEditCommand(Document & document)87 explicit SimpleEditCommand(Document& document) : EditCommand(document) { } 88 89 private: isSimpleEditCommand()90 virtual bool isSimpleEditCommand() const OVERRIDE { return true; } 91 }; 92 93 DEFINE_TYPE_CASTS(SimpleEditCommand, EditCommand, command, command->isSimpleEditCommand(), command.isSimpleEditCommand()); 94 95 } // namespace WebCore 96 97 #endif // EditCommand_h 98