/*
 * 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.insert;

import org.eclipse.swt.events.TypedEvent;
import org.eclipse.swt.widgets.Shell;
import org.herac.tuxguitar.gui.TuxGuitar;
import org.herac.tuxguitar.gui.actions.Action;
import org.herac.tuxguitar.gui.editors.chord.ChordDialog;
import org.herac.tuxguitar.gui.editors.tab.Caret;
import org.herac.tuxguitar.gui.editors.tab.TGMeasureImpl;
import org.herac.tuxguitar.gui.editors.tab.TGNoteImpl;
import org.herac.tuxguitar.gui.editors.tab.TGTrackImpl;
import org.herac.tuxguitar.gui.undo.undoables.measure.UndoableMeasureGeneric;
import org.herac.tuxguitar.song.models.TGBeat;
import org.herac.tuxguitar.song.models.TGChord;
import org.herac.tuxguitar.song.models.TGDuration;
import org.herac.tuxguitar.song.models.TGNote;
import org.herac.tuxguitar.song.models.TGString;
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 InsertChordAction extends Action {
  public static final String NAME = "action.insert.chord";

  public InsertChordAction() {
    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();
    TGTrackImpl track = caret.getTrack();
    TGMeasureImpl measure = caret.getMeasure();
    TGBeat beat = caret.getSelectedBeat();
    if (track != null && measure != null && beat != null) {
      // Si el acorde llego en el data del widget solo lo agrego
      if (e.widget.getData() instanceof TGChord) {
        TGChord chord = ((TGChord) e.widget.getData()).clone();
        insertChord(chord, track, measure, beat, caret.getVoice());
      }
      // sino muestro el editor de acordes
      else {
        Shell shell = TuxGuitar.instance().getShell();
        ChordDialog dialog = new ChordDialog();

        int result = dialog.open(shell, measure, beat, caret.getPosition());
        if (result == ChordDialog.RESULT_SAVE) {
          insertChord(dialog.getChord(), track, measure, beat, caret.getVoice());
        } else if (result == ChordDialog.RESULT_CLEAN) {
          removeChord(measure, beat);
        }
      }
    }
    return 0;
  }

  protected void insertChord(TGChord chord, TGTrackImpl track,
      TGMeasureImpl measure, TGBeat beat, int voiceIndex) {
    boolean restBeat = beat.isRestBeat();
    if (!restBeat || chord.countNotes() > 0) {

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

      // Add the chord notes to the tablature
      // Only if this is a "rest" beat
      TGVoice voice = beat.getVoice(voiceIndex);
      if (restBeat) {

        for (final TGString string : track.getStrings()) {

          int value = chord.getFretValue(string.getNumber() - 1);
          if (value >= 0) {
            TGNote note = new TGNoteImpl();
            note.setValue(value);
            note.setVelocity(getEditor().getTablature().getCaret()
                .getVelocity());
            note.setString(string.getNumber());

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

            getSongManager().getMeasureManager().addNote(beat, note, duration,
                voice.getIndex());
          }
        }
      }

      getSongManager().getMeasureManager().addChord(beat, chord);
      TuxGuitar.instance().getFileHistory().setUnsavedFile();
      fireUpdate(measure.getNumber());

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

  protected void removeChord(TGMeasureImpl measure, TGBeat beat) {
    if (beat.isChordBeat()) {
      // comienza el undoable
      UndoableMeasureGeneric undoable = UndoableMeasureGeneric.startUndo();

      getSongManager().getMeasureManager()
          .removeChord(measure, beat.getStart());
      TuxGuitar.instance().getFileHistory().setUnsavedFile();
      fireUpdate(measure.getNumber());

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