protected ViewModelBase(IScarletCommandBuilder commandBuilder)
: base((commandBuilder?.Messenger) !)
{
CommandBuilder = commandBuilder ?? throw new ArgumentNullException(nameof(commandBuilder));
Dispatcher = commandBuilder.Dispatcher ?? throw new ArgumentNullException(nameof(IScarletCommandBuilder.Dispatcher));
CommandManager = commandBuilder.CommandManager ?? throw new ArgumentNullException(nameof(IScarletCommandBuilder.CommandManager));
Exit = commandBuilder.Exit ?? throw new ArgumentNullException(nameof(IScarletCommandBuilder.Exit));
WeakEventManager = commandBuilder.WeakEventManager ?? throw new ArgumentNullException(nameof(IScarletCommandBuilder.WeakEventManager));
BusyStack = new ObservableBusyStack((hasItems) => IsBusy = hasItems);
}
protected PagedSourceListViewModelBase(IScarletCommandBuilder commandBuilder, SynchronizationContext synchronizationContext, Func <TViewModel, string> selector, IPagedDataProvider <TViewModel> pagedDataProvider)
: base(synchronizationContext, selector)
{
CommandBuilder = commandBuilder ?? throw new ArgumentNullException(nameof(commandBuilder));
Dispatcher = commandBuilder.Dispatcher ?? throw new ArgumentNullException(nameof(IScarletCommandBuilder.Dispatcher));
CommandManager = commandBuilder.CommandManager ?? throw new ArgumentNullException(nameof(IScarletCommandBuilder.CommandManager));
_pagedDataProvider = pagedDataProvider ?? throw new ArgumentNullException(nameof(pagedDataProvider));
SelectedItems = new ObservableCollection <TViewModel>();
BusyStack = new ObservableBusyStack((hasItems) => IsBusy = hasItems);
PageSize = 50;
_loadCommand = commandBuilder
.Create(Load, CanLoad)
.WithSingleExecution()
.WithBusyNotification(BusyStack)
.WithAsyncCancellation()
.Build();
_refreshCommand = commandBuilder
.Create(Refresh, CanRefresh)
.WithSingleExecution()
.WithBusyNotification(BusyStack)
.WithAsyncCancellation()
.Build();
_unloadCommand = commandBuilder
.Create(Unload, CanUnload)
.WithSingleExecution()
.WithBusyNotification(BusyStack)
.WithAsyncCancellation()
.Build();
NextCommand = commandBuilder
.Create(Next, CanNext)
.WithSingleExecution()
.WithBusyNotification(BusyStack)
.WithAsyncCancellation()
.Build();
PreviousCommand = commandBuilder
.Create(Previous, CanPrevious)
.WithSingleExecution()
.WithBusyNotification(BusyStack)
.WithAsyncCancellation()
.Build();
FirstCommand = commandBuilder
.Create(First, CanFirst)
.WithSingleExecution()
.WithBusyNotification(BusyStack)
.WithAsyncCancellation()
.Build();
LastCommand = commandBuilder
.Create(Last, CanLast)
.WithSingleExecution()
.WithBusyNotification(BusyStack)
.WithAsyncCancellation()
.Build();
}
