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 "core/editing/MoveSelectionCommand.h"
28
29 #include "core/dom/DocumentFragment.h"
30 #include "core/editing/ReplaceSelectionCommand.h"
31
32 namespace blink {
33
MoveSelectionCommand(PassRefPtrWillBeRawPtr<DocumentFragment> fragment,const Position & position,bool smartInsert,bool smartDelete)34 MoveSelectionCommand::MoveSelectionCommand(PassRefPtrWillBeRawPtr<DocumentFragment> fragment, const Position& position, bool smartInsert, bool smartDelete)
35 : CompositeEditCommand(*position.document()), m_fragment(fragment), m_position(position), m_smartInsert(smartInsert), m_smartDelete(smartDelete)
36 {
37 ASSERT(m_fragment);
38 }
39
doApply()40 void MoveSelectionCommand::doApply()
41 {
42 ASSERT(endingSelection().isNonOrphanedRange());
43
44 Position pos = m_position;
45 if (pos.isNull())
46 return;
47
48 // Update the position otherwise it may become invalid after the selection is deleted.
49 Position selectionEnd = endingSelection().end();
50 if (pos.anchorType() == Position::PositionIsOffsetInAnchor && selectionEnd.anchorType() == Position::PositionIsOffsetInAnchor
51 && selectionEnd.containerNode() == pos.containerNode() && selectionEnd.offsetInContainerNode() < pos.offsetInContainerNode()) {
52 pos.moveToOffset(pos.offsetInContainerNode() - selectionEnd.offsetInContainerNode());
53
54 Position selectionStart = endingSelection().start();
55 if (selectionStart.anchorType() == Position::PositionIsOffsetInAnchor && selectionStart.containerNode() == pos.containerNode())
56 pos.moveToOffset(pos.offsetInContainerNode() + selectionStart.offsetInContainerNode());
57 }
58
59 deleteSelection(m_smartDelete);
60
61 // If the node for the destination has been removed as a result of the deletion,
62 // set the destination to the ending point after the deletion.
63 // Fixes: <rdar://problem/3910425> REGRESSION (Mail): Crash in ReplaceSelectionCommand;
64 // selection is empty, leading to null deref
65 if (!pos.inDocument())
66 pos = endingSelection().start();
67
68 cleanupAfterDeletion(VisiblePosition(pos));
69
70 setEndingSelection(VisibleSelection(pos, endingSelection().affinity(), endingSelection().isDirectional()));
71 if (!pos.inDocument()) {
72 // Document was modified out from under us.
73 return;
74 }
75 ReplaceSelectionCommand::CommandOptions options = ReplaceSelectionCommand::SelectReplacement | ReplaceSelectionCommand::PreventNesting;
76 if (m_smartInsert)
77 options |= ReplaceSelectionCommand::SmartReplace;
78 applyCommandToComposite(ReplaceSelectionCommand::create(document(), m_fragment, options));
79 }
80
editingAction() const81 EditAction MoveSelectionCommand::editingAction() const
82 {
83 return EditActionDrag;
84 }
85
trace(Visitor * visitor)86 void MoveSelectionCommand::trace(Visitor* visitor)
87 {
88 visitor->trace(m_fragment);
89 visitor->trace(m_position);
90 CompositeEditCommand::trace(visitor);
91 }
92
93 } // namespace blink
94