public void CanExecuteEventArgsTest()
{
var args = new CanExecuteEventArgs();
Assert.IsNotNull(args);
Assert.IsTrue(args.CanExecute);
args = new CanExecuteEventArgs()
{
CanExecute = false,
};
Assert.IsNotNull(args);
Assert.IsFalse(args.CanExecute);
}
protected override async Task OnInitializedAsync()
{
await base.OnInitializedAsync();
if (CanExecute.HasDelegate)
{
var ev = new CanExecuteEventArgs();
await CanExecute.InvokeAsync(ev);
_canExecute = ev.Result;
}
else
{
_canExecute = true;
}
}
public void CanExecuteEventArgs_T_Test()
{
var args = new CanExecuteEventArgs <int>(13);
Assert.IsNotNull(args);
Assert.IsTrue(args.CanExecute);
Assert.AreEqual(13, args.Parameter);
args = new CanExecuteEventArgs <int>(42)
{
CanExecute = false,
};
Assert.IsNotNull(args);
Assert.IsFalse(args.CanExecute);
Assert.AreEqual(42, args.Parameter);
}
protected override async Task OnInitializedAsync()
{
await base.OnInitializedAsync();
if (CanExecute.HasDelegate)
{
var ev = new CanExecuteEventArgs();
await CanExecute.InvokeAsync(ev);
_canExecute = ev.Result;
}
else
{
_canExecute = true;
if (Screen != null)
{
var dws = Screen.GetDataWorkspace();
if (dws != null)
{
dws.SavedChanges += Dws_SavedChanges;
}
}
}
}
void canExecute(object sender, CanExecuteEventArgs e)
{
e.CanExecute = e.ActiveDocument != null;
}
void canExecute(object sender, CanExecuteEventArgs e)
{
e.CanExecute = DynamoButtonEnabled && e.ActiveDocument != null;
}
public void AddInCommandBinding_CanExecute(object sender, CanExecuteEventArgs e)
{
ExecuteEventHooks(EventType.AddInCommandBinding_CanExecute, sender, e, e.CommandId.Name);
}
internal bool ReloadListCanExecute() {
if (CanExecuteEvent != null) {
var ea = new CanExecuteEventArgs(CanExecuteType.ReloadList, true);
CanExecuteEvent(this, ea);
if (ea.Result is bool)
return (bool)ea.Result;
}
return true;
}
private void CanLastPage(object sender, CanExecuteEventArgs e)
{
e.Cancel = ViewModel.CurrentPage == ViewModel.MaxPage;
}
private void CanPreviousPage(object sender, CanExecuteEventArgs e)
{
e.Cancel = ViewModel.CurrentPage <= 1;
}
private void CanFirstPage(object sender, CanExecuteEventArgs e)
{
e.Cancel = ViewModel.CurrentPage == 1;
}
private void CanAdd(object sender, CanExecuteEventArgs e)
{
e.Cancel = !ViewModel.ViewBuilder.AllowedAdd;
}