Coverage Report - palmed.edit.selection.NewLineInsertion

Classes in this Package Line Coverage Branch Coverage Complexity
NewLineInsertion
96% 
100% 
1,8

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