/// <summary>
/// Class for one block.
/// Not normally called directly,workspace.newBlock() is preferred.
/// </summary>
/// <param name="workspace"> The Block's workspace</param>
/// <param name="prototypeName"> Name of the language object containing
/// type-specific functions for this block. </param>
/// <param name="opt_id">Use this ID if provided,otherwise create a new id</param>
public Block(Workspace workspace, string prototypeName = null, string opt_id = null)
{
Type = prototypeName;
ID = !string.IsNullOrEmpty(opt_id) && workspace.GetBlockById(opt_id) == null
? opt_id
: Utils.GenUid();
workspace.BlockDB.Add(ID, this);
Workspace = workspace;
OutputConnection = null;
NextConnection = null;
PreviousConnection = null;
InputList = new List <Input>();
workspace.AddTopBlock(this);
}