public FunctionEditorDialogViewModel(IVplServiceContext context, Function function, Action<FunctionMetadata> saveAction, ITextEditService textEditService, string displayName)
{
if (context == null) throw new ArgumentNullException(nameof(context));
if (function == null) throw new ArgumentNullException(nameof(function));
if (saveAction == null) throw new ArgumentNullException(nameof(saveAction));
if (textEditService == null) throw new ArgumentNullException(nameof(textEditService));
_context = context;
_function = function;
_saveAction = saveAction;
_textEditService = textEditService;
_displayName = displayName;
//Commands
RunCommand = new RelayCommand(Run, CanRun);
StopCommand = new RelayCommand(Stop, CanStop);
OkCommand = new RelayCommand(Ok, CanOk);
CloseCommand = new RelayCommand(Cancel, CanCancel);
SaveCommand = new RelayCommand(Apply, CanOk);
AddVariableCommand = new RelayCommand(AddVariable, CanAddVariable);
PasteCommand = new RelayCommand(Paste, CanPaste);
SelectReturnTypeCommand = new RelayCommand(SelectReturnType);
ClearReturnTypeCommand = new RelayCommand(() => ClearReturnType(), CanClearReturnType);
CheckForErrorsCommand = new RelayCommand(CheckForErrors);
ResetZoomCommand = new RelayCommand(ResetZoom);
//Create the toolbox
_tools = new ToolsViewModel<IElementFactory>(context.ElementFactoryManager.Factories.Where(f => f.ShowInToolbox));
//Select a default type
SelectedType = context.Types.FirstOrDefault(t => t.Id == VplTypeId.Float);
function.PropertyChanged += Function_PropertyChanged;
//Save the initial state
function.SaveUndoState();
}
