private void itunes_OnDatabaseChangedEvent(object deletedObjectIDs, object changedObjectIDs)
{
// NOTE: this event is both expensive and blocking, so it is not advised to
// wire up a handler to OnDatabaseChanged.
Debug.WriteLine("OnDatabaseChangedEvent(deletedObjectIDs, changedObjectIDs)");
if (deletedObjectIDs == null)
{
Debug.WriteLine("DeletedObjectIDs is null");
}
else
{
ObjectIDCollection deleteIDs = new ObjectIDCollection();
Array deleted = deletedObjectIDs as Array;
for (int i = deleted.GetLowerBound(0); i <= deleted.GetUpperBound(0); i++)
{
deleteIDs.Add(new ObjectID(
(int)deleted.GetValue(i, 0),
(int)deleted.GetValue(i, 1),
(int)deleted.GetValue(i, 2),
(int)deleted.GetValue(i, 3)));
}
if (deleteIDs.Count > 0)
{
DumpChanges("Deleted", deleteIDs);
}
}
if (deletedObjectIDs == null)
{
Debug.WriteLine("ChangedObjectIDs is null");
}
else
{
ObjectIDCollection changeIDs = new ObjectIDCollection();
Array changed = changedObjectIDs as Array;
for (int i = changed.GetLowerBound(0); i <= changed.GetUpperBound(0); i++)
{
changeIDs.Add(new ObjectID(
(int)changed.GetValue(i, 0),
(int)changed.GetValue(i, 1),
(int)changed.GetValue(i, 2),
(int)changed.GetValue(i, 3)));
}
if (changeIDs.Count > 0)
{
DumpChanges("Changes", changeIDs);
}
}
}
/// <summary>
/// Instantiate a new maintenance action only if the safe array describes a recognizable
/// activity pattern.
/// </summary>
/// <param name="safeArray"></param>
/// <returns></returns>
public static MaintenanceAction Create(object safeArray)
{
Array array = safeArray as Array;
ObjectIDCollection list = new ObjectIDCollection();
StringBuilder builder = new StringBuilder();
ObjectID oid;
// convert the safe array to a collection and construct the pattern map
int lower = array.GetLowerBound(0);
int upper = array.GetUpperBound(0);
for (int i = lower; i <= upper; i++)
{
oid = new ObjectID(
(int)array.GetValue(i, 0), // source
(int)array.GetValue(i, 1), // playlist
(int)array.GetValue(i, 2), // trackid
(int)array.GetValue(i, 3)); // databaseid
list.Add(oid);
if (oid.IsPlaylist)
{
builder.Append("P");
}
else if (oid.IsSource)
{
builder.Append("S");
}
else if (oid.IsTrack)
{
builder.Append("T");
}
else
{
builder.Append("X");
}
}
// recognize pattern to instantiate new MaintenanceAction
string map = builder.ToString();
if (Regex.IsMatch(map, AddPlaylistPattern))
{
return(new MaintenanceAction(ActionType.AddPlaylist, list));
}
else if (Regex.IsMatch(map, AddTracksPattern))
{
return(new MaintenanceAction(ActionType.AddTracksToPlaylist, list));
}
else if (Regex.IsMatch(map, RemovePlaylistPattern))
{
return(new MaintenanceAction(ActionType.RemovePlaylist, list));
}
else if (Regex.IsMatch(map, RemoveTracksPattern))
{
return(new MaintenanceAction(ActionType.RemoveTracksFromPlaylist, list));
}
// Not a recognizable pattern, return null
list.Clear();
return(null);
}
private void itunes_OnDatabaseChangedEvent(object deletedObjectIDs, object changedObjectIDs)
{
// NOTE: this event is both expensive and blocking, so it is not advised to
// wire up a handler to OnDatabaseChanged.
Debug.WriteLine("OnDatabaseChangedEvent(deletedObjectIDs, changedObjectIDs)");
if (deletedObjectIDs == null)
{
Debug.WriteLine("DeletedObjectIDs is null");
}
else
{
ObjectIDCollection deleteIDs = new ObjectIDCollection();
Array deleted = deletedObjectIDs as Array;
for (int i = deleted.GetLowerBound(0); i <= deleted.GetUpperBound(0); i++)
{
deleteIDs.Add(new ObjectID(
(int)deleted.GetValue(i, 0),
(int)deleted.GetValue(i, 1),
(int)deleted.GetValue(i, 2),
(int)deleted.GetValue(i, 3)));
}
if (deleteIDs.Count > 0)
{
DumpChanges("Deleted", deleteIDs);
}
}
if (deletedObjectIDs == null)
{
Debug.WriteLine("ChangedObjectIDs is null");
}
else
{
ObjectIDCollection changeIDs = new ObjectIDCollection();
Array changed = changedObjectIDs as Array;
for (int i = changed.GetLowerBound(0); i <= changed.GetUpperBound(0); i++)
{
changeIDs.Add(new ObjectID(
(int)changed.GetValue(i, 0),
(int)changed.GetValue(i, 1),
(int)changed.GetValue(i, 2),
(int)changed.GetValue(i, 3)));
}
if (changeIDs.Count > 0)
{
DumpChanges("Changes", changeIDs);
}
}
}
/// <summary>
/// Instantiate a new maintenance action only if the safe array describes a recognizable
/// activity pattern.
/// </summary>
/// <param name="safeArray"></param>
/// <returns></returns>
public static MaintenanceAction Create(object safeArray)
{
Array array = safeArray as Array;
ObjectIDCollection list = new ObjectIDCollection();
StringBuilder builder = new StringBuilder();
ObjectID oid;
// convert the safe array to a collection and construct the pattern map
int lower = array.GetLowerBound(0);
int upper = array.GetUpperBound(0);
for (int i = lower; i <= upper; i++)
{
oid = new ObjectID(
(int)array.GetValue(i, 0), // source
(int)array.GetValue(i, 1), // playlist
(int)array.GetValue(i, 2), // trackid
(int)array.GetValue(i, 3)); // databaseid
list.Add(oid);
if (oid.IsPlaylist)
{
builder.Append("P");
}
else if (oid.IsSource)
{
builder.Append("S");
}
else if (oid.IsTrack)
{
builder.Append("T");
}
else
{
builder.Append("X");
}
}
// recognize pattern to instantiate new MaintenanceAction
string map = builder.ToString();
if (Regex.IsMatch(map, AddPlaylistPattern))
{
return new MaintenanceAction(ActionType.AddPlaylist, list);
}
else if (Regex.IsMatch(map, AddTracksPattern))
{
return new MaintenanceAction(ActionType.AddTracksToPlaylist, list);
}
else if (Regex.IsMatch(map, RemovePlaylistPattern))
{
return new MaintenanceAction(ActionType.RemovePlaylist, list);
}
else if (Regex.IsMatch(map, RemoveTracksPattern))
{
return new MaintenanceAction(ActionType.RemoveTracksFromPlaylist, list);
}
// Not a recognizable pattern, return null
list.Clear();
return null;
}