Classes in this Package | Line Coverage | Branch Coverage | Complexity | ||||||||
NewLineInsertion |
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| 1.8;1,8 |
1 | /** |
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2 | * Redistribution and use in source and binary forms, with or without |
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3 | * modification, are permitted provided that the following conditions are |
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4 | * met : |
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5 | * |
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6 | * . Redistributions of source code must retain the above copyright |
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7 | * notice, this list of conditions and the following disclaimer. |
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8 | * |
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9 | * . 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 | * . The name of the author may not be used to endorse or promote products |
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14 | * derived from this software without specific prior written permission. |
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15 | * |
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16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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17 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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18 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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19 | * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, |
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20 | * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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21 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
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22 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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23 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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24 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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25 | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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26 | * POSSIBILITY OF SUCH DAMAGE. |
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27 | * |
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28 | * $Id$ |
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29 | */ |
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30 | ||
31 | package palmed.edit.selection; |
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32 | ||
33 | import palmed.edit.text.IText; |
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34 | import palmed.edit.util.Coordinate; |
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35 | ||
36 | /** |
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37 | * This class implements an action to replace the selection (if any) with a new line. |
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38 | * |
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39 | * @author Mathieu Champlon |
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40 | * @version $Revision$ $Date$ |
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41 | */ |
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42 | public final class NewLineInsertion extends AbstractAction |
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43 | { |
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44 | /** |
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45 | * The selection. |
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46 | */ |
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47 | private final ISelection selection_; |
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48 | /** |
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49 | * The text. |
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50 | */ |
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51 | private final IText text_; |
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52 | /** |
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53 | * The insertion position. |
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54 | */ |
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55 | private final Coordinate insertion_; |
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56 | /** |
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57 | * The total number of inserted characters. |
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58 | */ |
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59 | private int count_; |
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60 | ||
61 | /** |
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62 | * Create an enter action. |
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63 | * |
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64 | * @param selection the selection |
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65 | * @param text the text |
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66 | * @param insertion the insertion position |
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67 | */ |
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68 | public NewLineInsertion( final ISelection selection, final IText text, final Coordinate insertion ) |
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69 | { |
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70 | 60 | super( selection ); |
71 | 60 | selection_ = selection; |
72 | 60 | text_ = text; |
73 | 60 | insertion_ = insertion; |
74 | 60 | count_ = 1; |
75 | 60 | } |
76 | ||
77 | /** |
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78 | * {@inheritDoc} |
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79 | */ |
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80 | protected void onPerform() |
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81 | { |
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82 | 60 | backupData(); |
83 | 60 | selection_.delete(); |
84 | 60 | text_.insertNewLine( insertion_ ); |
85 | 60 | selection_.forward(); |
86 | 60 | selection_.clear(); |
87 | 60 | } |
88 | ||
89 | /** |
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90 | * {@inheritDoc} |
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91 | */ |
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92 | protected boolean onUndo() |
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93 | { |
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94 | 80 | for( int i = 0; i < count_; ++i ) |
95 | 50 | selection_.backward(); |
96 | 30 | restoreData(); |
97 | 30 | return true; |
98 | } |
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99 | ||
100 | /** |
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101 | * {@inheritDoc} |
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102 | */ |
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103 | protected boolean onRedo() |
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104 | { |
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105 | 15 | selection_.delete(); |
106 | 40 | for( int i = 0; i < count_; ++i ) |
107 | { |
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108 | 25 | text_.insertNewLine( insertion_ ); |
109 | 25 | selection_.forward(); |
110 | } |
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111 | 15 | return false; |
112 | } |
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113 | ||
114 | /** |
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115 | * {@inheritDoc} |
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116 | */ |
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117 | public boolean merge( final IAction action ) |
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118 | { |
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119 | 20 | if( !(action instanceof NewLineInsertion) ) |
120 | 0 | return false; |
121 | 20 | overwriteFinalState( (NewLineInsertion)action ); |
122 | 20 | ++count_; |
123 | 20 | return true; |
124 | } |
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125 | } |