MoveBeatsLeftAction.java

/*
 * Created on 17-dic-2005
 * 
 * TODO To change the template for this generated file go to Window -
 * Preferences - Java - Code Style - Code Templates
 */
package org.herac.tuxguitar.gui.actions.note;

import org.eclipse.swt.events.TypedEvent;
import org.herac.tuxguitar.gui.TuxGuitar;
import org.herac.tuxguitar.gui.actions.Action;
import org.herac.tuxguitar.gui.editors.tab.Caret;
import org.herac.tuxguitar.gui.undo.undoables.track.UndoableTrackGeneric;
import org.herac.tuxguitar.song.models.TGBeat;
import org.herac.tuxguitar.song.models.TGDuration;
import org.herac.tuxguitar.song.models.TGMeasure;
import org.herac.tuxguitar.song.models.TGTrack;

/**
 * @author julian
 * 
 *         TODO To change the template for this generated type comment go to
 *         Window - Preferences - Java - Code Style - Code Templates
 */
public class MoveBeatsLeftAction extends Action {
  public static final String NAME = "action.beat.general.move-left";

  public MoveBeatsLeftAction() {
    super(NAME, AUTO_LOCK | AUTO_UNLOCK | AUTO_UPDATE | DISABLE_ON_PLAYING
        | KEY_BINDING_AVAILABLE);
  }

  protected int execute(TypedEvent e) {
    Caret caret = getEditor().getTablature().getCaret();
    TGBeat beat = caret.getSelectedBeat();
    TGMeasure measure = caret.getMeasure();
    TGTrack track = caret.getTrack();
    TGDuration duration = (beat != null ? beat.getVoice(caret.getVoice())
        .getDuration() : null);
    if (beat != null && measure != null && track != null && duration != null) {
      // comienza el undoable
      UndoableTrackGeneric undoable = UndoableTrackGeneric.startUndo(track);

      getSongManager().getTrackManager().moveTrackBeats(track,
          measure.getStart(), beat.getStart(), -duration.getTime());

      // termia el undoable
      addUndoableEdit(undoable.endUndo(track));

      TuxGuitar.instance().getFileHistory().setUnsavedFile();

      updateTablature();
    }
    return 0;
  }
}