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Viewing changes to src/org/herac/tuxguitar/gui/undo/undoables/track/UndoableAddTrack.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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src/org/herac/tuxguitar/gui/undo/undoables/track/UndoableAddTrack.java
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package org.herac.tuxguitar.gui.undo.undoables.track;
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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.models.SongTrack;
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public class UndoableAddTrack 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 SongTrack redoableTrack;
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        private UndoableAddTrack(){
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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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                TuxGuitar.instance().getSongManager().addTrack((SongTrack)this.redoableTrack.clone(TuxGuitar.instance().getSongManager().getMeasureHeaders()));
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                TuxGuitar.instance().fireUpdate();
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                TuxGuitar.instance().getMixer().update();
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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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                TuxGuitar.instance().getSongManager().removeTrack(this.redoableTrack);
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                TuxGuitar.instance().fireUpdate();
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                TuxGuitar.instance().getMixer().update();
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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 (doAction == REDO_ACTION);
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    }
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    public boolean canUndo() {
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        return (doAction == UNDO_ACTION);
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    }
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    public static UndoableAddTrack startUndo(){
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        UndoableAddTrack undoable = new UndoableAddTrack();
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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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        return undoable;
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    }
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    public UndoableAddTrack endUndo(SongTrack track){
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        this.redoCaret = new UndoableCaretHelper();
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        this.redoableTrack = (SongTrack)track.clone(TuxGuitar.instance().getSongManager().getMeasureHeaders());
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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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}