1 /*
2 * Copyright (C) 2005, 2006 Apple Computer, 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 #include "config.h"
27 #include "MoveSelectionCommand.h"
28
29 #include "DocumentFragment.h"
30 #include "ReplaceSelectionCommand.h"
31
32 namespace WebCore {
33
MoveSelectionCommand(PassRefPtr<DocumentFragment> fragment,const Position & position,bool smartMove)34 MoveSelectionCommand::MoveSelectionCommand(PassRefPtr<DocumentFragment> fragment, const Position& position, bool smartMove)
35 : CompositeEditCommand(position.node()->document()), m_fragment(fragment), m_position(position), m_smartMove(smartMove)
36 {
37 ASSERT(m_fragment);
38 }
39
doApply()40 void MoveSelectionCommand::doApply()
41 {
42 VisibleSelection selection = endingSelection();
43 ASSERT(selection.isRange());
44
45 Position pos = m_position;
46 if (pos.isNull())
47 return;
48
49 // Update the position otherwise it may become invalid after the selection is deleted.
50 Node *positionNode = m_position.node();
51 int positionOffset = m_position.deprecatedEditingOffset();
52 Position selectionEnd = selection.end();
53 int selectionEndOffset = selectionEnd.deprecatedEditingOffset();
54 if (selectionEnd.node() == positionNode && selectionEndOffset < positionOffset) {
55 positionOffset -= selectionEndOffset;
56 Position selectionStart = selection.start();
57 if (selectionStart.node() == positionNode) {
58 positionOffset += selectionStart.deprecatedEditingOffset();
59 }
60 pos = Position(positionNode, positionOffset);
61 }
62
63 deleteSelection(m_smartMove);
64
65 // If the node for the destination has been removed as a result of the deletion,
66 // set the destination to the ending point after the deletion.
67 // Fixes: <rdar://problem/3910425> REGRESSION (Mail): Crash in ReplaceSelectionCommand;
68 // selection is empty, leading to null deref
69 if (!pos.node()->inDocument())
70 pos = endingSelection().start();
71
72 setEndingSelection(VisibleSelection(pos, endingSelection().affinity()));
73 if (!positionNode->inDocument()) {
74 // Document was modified out from under us.
75 return;
76 }
77 applyCommandToComposite(ReplaceSelectionCommand::create(positionNode->document(), m_fragment, true, m_smartMove));
78 }
79
editingAction() const80 EditAction MoveSelectionCommand::editingAction() const
81 {
82 return EditActionDrag;
83 }
84
85 } // namespace WebCore
86