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 selectionEndWasEndOfParagraph);
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