/// <summary>
/// Loads the viewer with a Score object generated from the specified MusicXml file.
/// </summary>
public void loadFile(string fileName)
{
this.fileName = fileName;
if (File.Exists(fileName))
{
// Parser instance converts between Score object and MusicXML
var parser = new MusicXmlParser();
Score score = parser.Parse(XDocument.Load(fileName)); // Load the content of the specified file into Data
data = null;
Data = score;
// Get the key signature
keySig = (Key)score.FirstStaff.Elements.First(k => k.GetType() == typeof(Key));
if (KeySig == null)
{
KeySig = new Key(0);
}
// Get the time signature
timeSig = (TimeSignature)score.FirstStaff.Elements.First(k => k.GetType() == typeof(TimeSignature));
if (timeSig == null)
{
timeSig = TimeSignature.CommonTime;
}
// Set up the back end data model
staves = null;
staves = new List <LStaff>();
foreach (var staff in score.Staves)
{
LStaff ls = null;
List <LMeasure> measures = new List <LMeasure>();
foreach (var measure in staff.Measures)
{
LMeasure m = new LMeasure(measure.Elements, ls, timeSig.WholeNoteCapacity);
measures.Add(m);
}
ls = new LStaff(staff, measures);
this.staves.Add(ls);
}
player = new MidiTaskScorePlayer(data);
updateView();
}
else
{
throw new FileNotFoundException(fileName + " not found."); //This and any parser exceptions will be caught by the calling function
}
}
/// <summary>
/// Adds the note to the staff in the correct location
/// </summary>
/// <param name="nr">The note to add</param>
private void addNoteOrRestToStaff(NoteOrRest nr)
{
// New for LStaff
var elem = Viewer.SelectedElement;
LStaff staff = getLStaff(elem);
NoteOrRest noteToPlay;
if (isValidTarget(elem))
{
LMeasure measure = staff.getMeasure(elem);
staff.AddAfter(elem, nr);
if (measure.Contains(nr))
{
Viewer.SelectedElement = nr;
}
else if (measure.Node.Next != null && measure.Node.Next.Value.Count > 0)
{
Viewer.SelectedElement = measure.Node.Next.Value.First.Value;
}
noteToPlay = (NoteOrRest)Viewer.SelectedElement;
}
else
{
staff.Add(nr);
noteToPlay = (NoteOrRest)staff.Last.Value.Last(e => e.GetType().IsSubclassOf(typeof(NoteOrRest)));
}
// Play the note
if (noteToPlay.GetType() == typeof(Note))
{
model.PlayNote((Note)noteToPlay);
}
// Update the view model to make the Play command available
model.updateView();
}