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      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 ReplaceSelectionCommand_h
     27 #define ReplaceSelectionCommand_h
     28 
     29 #include "CompositeEditCommand.h"
     30 
     31 namespace WebCore {
     32 
     33 class DocumentFragment;
     34 class EditingStyle;
     35 class ReplacementFragment;
     36 
     37 class ReplaceSelectionCommand : public CompositeEditCommand {
     38 public:
     39     enum CommandOption {
     40         SelectReplacement = 1 << 0,
     41         SmartReplace = 1 << 1,
     42         MatchStyle = 1 << 2,
     43         PreventNesting = 1 << 3,
     44         MovingParagraph = 1 << 4
     45     };
     46 
     47     typedef unsigned CommandOptions;
     48 
     49     static PassRefPtr<ReplaceSelectionCommand> create(Document* document, PassRefPtr<DocumentFragment> fragment, CommandOptions options, EditAction action = EditActionPaste)
     50     {
     51         return adoptRef(new ReplaceSelectionCommand(document, fragment, options, action));
     52     }
     53 
     54 private:
     55     ReplaceSelectionCommand(Document*, PassRefPtr<DocumentFragment>, CommandOptions, EditAction);
     56 
     57     virtual void doApply();
     58     virtual EditAction editingAction() const;
     59 
     60     void completeHTMLReplacement(const Position& lastPositionToSelect);
     61 
     62     void insertNodeAfterAndUpdateNodesInserted(PassRefPtr<Node> insertChild, Node* refChild);
     63     void insertNodeAtAndUpdateNodesInserted(PassRefPtr<Node>, const Position&);
     64     void insertNodeBeforeAndUpdateNodesInserted(PassRefPtr<Node> insertChild, Node* refChild);
     65     Node* insertAsListItems(PassRefPtr<Node>, Node* insertionNode, const Position&);
     66 
     67     void updateNodesInserted(Node*);
     68     bool shouldRemoveEndBR(Node*, const VisiblePosition&);
     69 
     70     bool shouldMergeStart(bool, bool, bool);
     71     bool shouldMergeEnd(bool selectEndWasEndOfParagraph);
     72     bool shouldMerge(const VisiblePosition&, const VisiblePosition&);
     73 
     74     void mergeEndIfNeeded();
     75 
     76     void removeUnrenderedTextNodesAtEnds();
     77 
     78     void negateStyleRulesThatAffectAppearance();
     79     void handleStyleSpans();
     80     void copyStyleToChildren(Node* parentNode, const CSSMutableStyleDeclaration* parentStyle);
     81     void handlePasteAsQuotationNode();
     82 
     83     virtual void removeNodePreservingChildren(Node*);
     84     virtual void removeNodeAndPruneAncestors(Node*);
     85 
     86     VisiblePosition positionAtStartOfInsertedContent();
     87     VisiblePosition positionAtEndOfInsertedContent();
     88 
     89     bool performTrivialReplace(const ReplacementFragment&);
     90 
     91     RefPtr<Node> m_firstNodeInserted;
     92     RefPtr<Node> m_lastLeafInserted;
     93     RefPtr<EditingStyle> m_insertionStyle;
     94     bool m_selectReplacement;
     95     bool m_smartReplace;
     96     bool m_matchStyle;
     97     RefPtr<DocumentFragment> m_documentFragment;
     98     bool m_preventNesting;
     99     bool m_movingParagraph;
    100     EditAction m_editAction;
    101     bool m_shouldMergeEnd;
    102 };
    103 
    104 } // namespace WebCore
    105 
    106 #endif // ReplaceSelectionCommand_h
    107