/*
 * 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.editors.tab.TGNoteImpl;
import org.herac.tuxguitar.gui.undo.undoables.measure.UndoableMeasureGeneric;
import org.herac.tuxguitar.song.models.TGDuration;
import org.herac.tuxguitar.song.models.TGMeasure;
import org.herac.tuxguitar.song.models.TGNote;
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 ChangeTiedNoteAction extends Action {
  public static final String NAME = "action.note.general.tied";

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

  @Override
  protected int execute(TypedEvent e) {
    Caret caret = getEditor().getTablature().getCaret();
    if (caret.getSelectedNote() != null) {
      // comienza el undoable
      UndoableMeasureGeneric undoable = UndoableMeasureGeneric.startUndo();

      getSongManager().getMeasureManager().changeTieNote(
          caret.getSelectedNote());

      // termia el undoable
      addUndoableEdit(undoable.endUndo());
    } else {
      TGNote note = new TGNoteImpl();
      note.setValue(0);
      note.setVelocity(caret.getVelocity());
      note.setString(caret.getSelectedString().getNumber());
      note.setTiedNote(true);

      TGDuration duration = caret.getDuration().clone();

      setTiedNoteValue(note, caret);

      // comienza el undoable
      UndoableMeasureGeneric undoable = UndoableMeasureGeneric.startUndo();

      getSongManager().getMeasureManager().addNote(caret.getSelectedBeat(),
          note, duration, caret.getVoice());

      // termia el undoable
      addUndoableEdit(undoable.endUndo());
    }
    TuxGuitar.instance().getFileHistory().setUnsavedFile();
    updateTablature();
    return 0;
  }

  private void setTiedNoteValue(TGNote note, Caret caret) {
    TGMeasure measure = caret.getMeasure();
    TGVoice voice = getSongManager().getMeasureManager().getPreviousVoice(
        measure.getBeats(), caret.getSelectedBeat(), caret.getVoice());
    while (measure != null) {
      while (voice != null) {
        if (voice.isRestVoice()) {
          note.setValue(0);
          return;
        }
        // Check if is there any note at same string.
        for (final TGNote current : voice.getNotes()) {
          if (current.getString() == note.getString()) {
            note.setValue(current.getValue());
            return;
          }
        }
        voice = getSongManager().getMeasureManager().getPreviousVoice(
            measure.getBeats(), voice.getBeat(), caret.getVoice());
      }
      measure = getSongManager().getTrackManager().getPrevMeasure(measure);
      if (measure != null) {
        voice = getSongManager().getMeasureManager().getLastVoice(
            measure.getBeats(), caret.getVoice());
      }
    }
  }

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