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Viewing changes to TuxGuitar/src/org/herac/tuxguitar/gui/undo/undoables/custom/UndoableChangeAlternativeRepeat.java

  • Committer: Bazaar Package Importer
  • Author(s): Philippe Coval
  • Date: 2008-06-19 00:30:30 UTC
  • mto: (5.1.2 sid)
  • mto: This revision was merged to the branch mainline in revision 3.
  • Revision ID: james.westby@ubuntu.com-20080619003030-h719szrhsngou7c6
Tags: upstream-1.0
Import upstream version 1.0

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TuxGuitar/src/org/herac/tuxguitar/gui/undo/undoables/custom/UndoableChangeAlternativeRepeat.java
 
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package org.herac.tuxguitar.gui.undo.undoables.custom;
 
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import org.herac.tuxguitar.gui.TuxGuitar;
 
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import org.herac.tuxguitar.gui.editors.tab.Caret;
 
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import org.herac.tuxguitar.gui.undo.CannotRedoException;
 
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import org.herac.tuxguitar.gui.undo.CannotUndoException;
 
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import org.herac.tuxguitar.gui.undo.UndoableEdit;
 
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import org.herac.tuxguitar.gui.undo.undoables.UndoableCaretHelper;
 
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import org.herac.tuxguitar.song.managers.TGSongManager;
 
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import org.herac.tuxguitar.song.models.TGMeasure;
 
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public class UndoableChangeAlternativeRepeat implements UndoableEdit{
 
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        private int doAction;
 
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        private UndoableCaretHelper undoCaret;
 
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        private UndoableCaretHelper redoCaret;
 
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        private long position;
 
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        private int undoRepeatAlternative;
 
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        private int redoRepeatAlternative;
 
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        private UndoableChangeAlternativeRepeat(){
 
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                super();
 
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        }
 
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        public void redo() throws CannotRedoException {
 
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                if(!canRedo()){
 
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                        throw new CannotRedoException();
 
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                }
 
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                TGSongManager manager = TuxGuitar.instance().getSongManager();
 
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                manager.changeAlternativeRepeat(this.position,this.redoRepeatAlternative);
 
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                TGMeasure measure = manager.getTrackManager().getMeasureAt(manager.getFirstTrack(),this.position);
 
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                TuxGuitar.instance().getTablatureEditor().getTablature().getViewLayout().fireUpdate(measure.getNumber());
 
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                this.redoCaret.update();
 
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                this.doAction = UNDO_ACTION;
 
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        }
 
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        public void undo() throws CannotUndoException {
 
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                if(!canUndo()){
 
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                        throw new CannotUndoException();
 
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                }
 
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                TGSongManager manager = TuxGuitar.instance().getSongManager();
 
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                manager.changeAlternativeRepeat(this.position,this.undoRepeatAlternative);
 
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                TGMeasure measure = manager.getTrackManager().getMeasureAt(manager.getFirstTrack(),this.position);
 
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                TuxGuitar.instance().getTablatureEditor().getTablature().getViewLayout().fireUpdate(measure.getNumber());
 
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                this.undoCaret.update();
 
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                this.doAction = REDO_ACTION;
 
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        }
 
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        public boolean canRedo() {
 
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                return (this.doAction == REDO_ACTION);
 
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        }
 
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        public boolean canUndo() {
 
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                return (this.doAction == UNDO_ACTION);
 
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        }
 
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        public static UndoableChangeAlternativeRepeat startUndo(){
 
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                UndoableChangeAlternativeRepeat undoable = new UndoableChangeAlternativeRepeat();
 
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                Caret caret = getCaret();
 
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                undoable.doAction = UNDO_ACTION;
 
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                undoable.undoCaret = new UndoableCaretHelper();
 
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                undoable.position = caret.getPosition();
 
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                undoable.undoRepeatAlternative = caret.getMeasure().getHeader().getRepeatAlternative();
 
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                return undoable;
 
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        }
 
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        public UndoableChangeAlternativeRepeat endUndo(int redoRepeatAlternative){
 
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                this.redoCaret = new UndoableCaretHelper();
 
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                this.redoRepeatAlternative = redoRepeatAlternative;
 
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                return this;
 
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        }
 
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        private static Caret getCaret(){
 
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                return TuxGuitar.instance().getTablatureEditor().getTablature().getCaret();
 
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        }
 
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}