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1 /* |
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2 * Copyright (C) 2005, 2006 Apple Computer, Inc. All rights reserved. |
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3 * |
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4 * Redistribution and use in source and binary forms, with or without |
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5 * modification, are permitted provided that the following conditions |
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6 * are met: |
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7 * 1. Redistributions of source code must retain the above copyright |
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8 * notice, this list of conditions and the following disclaimer. |
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9 * 2. Redistributions in binary form must reproduce the above copyright |
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10 * notice, this list of conditions and the following disclaimer in the |
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11 * documentation and/or other materials provided with the distribution. |
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12 * |
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13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
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14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
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17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
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21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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24 */ |
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25 |
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26 #include "config.h" |
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27 #include "MoveSelectionCommand.h" |
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28 |
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29 #include "DocumentFragment.h" |
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30 #include "ReplaceSelectionCommand.h" |
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31 |
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32 namespace WebCore { |
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33 |
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34 MoveSelectionCommand::MoveSelectionCommand(PassRefPtr<DocumentFragment> fragment, const Position& position, bool smartInsert, bool smartDelete) |
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35 : CompositeEditCommand(position.node()->document()), m_fragment(fragment), m_position(position), m_smartInsert(smartInsert), m_smartDelete(smartDelete) |
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36 { |
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37 ASSERT(m_fragment); |
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38 } |
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39 |
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40 void MoveSelectionCommand::doApply() |
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41 { |
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42 VisibleSelection selection = endingSelection(); |
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43 ASSERT(selection.isRange()); |
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44 |
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45 Position pos = m_position; |
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46 if (pos.isNull()) |
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47 return; |
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48 |
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49 // Update the position otherwise it may become invalid after the selection is deleted. |
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50 Node *positionNode = m_position.node(); |
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51 int positionOffset = m_position.deprecatedEditingOffset(); |
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52 Position selectionEnd = selection.end(); |
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53 int selectionEndOffset = selectionEnd.deprecatedEditingOffset(); |
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54 if (selectionEnd.node() == positionNode && selectionEndOffset < positionOffset) { |
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55 positionOffset -= selectionEndOffset; |
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56 Position selectionStart = selection.start(); |
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57 if (selectionStart.node() == positionNode) { |
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58 positionOffset += selectionStart.deprecatedEditingOffset(); |
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59 } |
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60 pos = Position(positionNode, positionOffset); |
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61 } |
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62 |
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63 deleteSelection(m_smartDelete); |
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64 |
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65 // If the node for the destination has been removed as a result of the deletion, |
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66 // set the destination to the ending point after the deletion. |
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67 // Fixes: <rdar://problem/3910425> REGRESSION (Mail): Crash in ReplaceSelectionCommand; |
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68 // selection is empty, leading to null deref |
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69 if (!pos.node()->inDocument()) |
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70 pos = endingSelection().start(); |
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71 |
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72 setEndingSelection(VisibleSelection(pos, endingSelection().affinity())); |
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73 if (!positionNode->inDocument()) { |
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74 // Document was modified out from under us. |
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75 return; |
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76 } |
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77 applyCommandToComposite(ReplaceSelectionCommand::create(positionNode->document(), m_fragment, true, m_smartInsert)); |
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78 } |
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79 |
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80 EditAction MoveSelectionCommand::editingAction() const |
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81 { |
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82 return EditActionDrag; |
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83 } |
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84 |
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85 } // namespace WebCore |