/*
 * 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 java.util.Iterator;

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.editors.tab.TGBeatGroup;
import org.herac.tuxguitar.gui.editors.tab.TGBeatImpl;
import org.herac.tuxguitar.gui.editors.tab.TGVoiceImpl;
import org.herac.tuxguitar.gui.undo.undoables.measure.UndoableMeasureGeneric;
import org.herac.tuxguitar.song.models.Direction;
import org.herac.tuxguitar.song.models.TGVoice;

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

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

  protected int execute(TypedEvent e) {
    Caret caret = getEditor().getTablature().getCaret();
    TGBeatImpl beat = caret.getSelectedBeat();
    if (beat != null) {
      TGVoiceImpl voice = beat.getVoiceImpl(caret.getVoice());
      TGBeatGroup group = voice.getBeatGroup();
      if (!voice.isEmpty() && !voice.isRestVoice() && group != null) {
        // comienza el undoable
        UndoableMeasureGeneric undoable = UndoableMeasureGeneric.startUndo();

        Iterator it = group.getVoices().iterator();
        while (it.hasNext()) {
          TGVoice current = (TGVoice) it.next();
          getSongManager().getMeasureManager().changeVoiceDirection(current,
              Direction.DOWN);
        }

        // termia el undoable
        addUndoableEdit(undoable.endUndo());
        TuxGuitar.instance().getFileHistory().setUnsavedFile();

        updateTablature();
      }
    }
    return 0;
  }

  public void updateTablature() {
    fireUpdate(getEditor().getTablature().getCaret().getMeasure().getNumber());
  }
}