public CollectionChangedEventArgs(ChangTransaction transaction)
{
if (transaction == null)
{
throw new ArgumentNullException();
}
this.Transaction = transaction;
}
public ValueChangedEventArgs(TValue oldValue, TValue newValue, ChangTransaction transaction)
{
if (transaction == null)
{
throw new ArgumentNullException();
}
this.OldValue = oldValue;
this.NewValue = newValue;
this.Transaction = transaction;
}
public void TriggerChanged(TValue oldValue, TValue newValue)
{
if (this.Changed == null)
{
return;
}
ChangTransaction.Perform(delegate(ChangTransaction t)
{
ValueChangedEventArgs <TValue> e = new ValueChangedEventArgs <TValue>(oldValue, newValue, t);
this.Changed(this, e);
});
}
public bool TriggerChanging(TValue oldValue, TValue newValue)
{
if (this.Changing == null)
{
return(true);
}
return(ChangTransaction.Perform(delegate(ChangTransaction t)
{
ValueChangingEventArgs <TValue> e = new ValueChangingEventArgs <TValue>(oldValue, newValue, t);
this.Changing(this, e);
return !e.Cancel;
}));
}
public void TriggerChanged(NotifyingCollection <TItem> oldValue, NotifyingCollection <TItem> newValue)
{
if (this.Changed == null)
{
return;
}
ChangTransaction.Perform(delegate(ChangTransaction t)
{
ValueChangingEventArgs <NotifyingCollection <TItem> > e =
new ValueChangingEventArgs <NotifyingCollection <TItem> >(oldValue, newValue, t);
this.Changed(this, e);
});
}
public bool TriggerChanging(NotifyingCollection <TItem> oldValue, NotifyingCollection <TItem> newValue)
{
if (this.Changing == null)
{
return(true);
}
return(ChangTransaction.Perform(delegate(ChangTransaction t)
{
ValueChangingEventArgs <NotifyingCollection <TItem> > e =
new ValueChangingEventArgs <NotifyingCollection <TItem> >(oldValue, newValue, t);
this.Changing(this, e);
return !e.Cancel;
}));
}
public static void Perform(Action <ChangTransaction> func)
{
ChangTransaction transaction = ChangTransaction.Current;
if (transaction == null)
{
ChangTransaction.Current = new ChangTransaction();
}
try
{
func(ChangTransaction.Current);
if (transaction == null)
{
ChangTransaction.Current.Perform();
}
}
finally
{
ChangTransaction.Current = transaction;
}
}
public static TResult Perform <TResult>(Func <ChangTransaction, TResult> func)
{
TResult result;
ChangTransaction transaction = ChangTransaction.Current;
if (transaction == null)
{
ChangTransaction.Current = new ChangTransaction();
}
try
{
result = func(ChangTransaction.Current);
if (transaction == null)
{
ChangTransaction.Current.Perform();
}
}
finally
{
ChangTransaction.Current = transaction;
}
return(result);
}
public ValueChangingEventArgs(TValue oldValue, TValue newValue, ChangTransaction transaction, bool cancel)
: base(oldValue, newValue, transaction)
{
this.Cancel = cancel;
}
public ValueChangingEventArgs(TValue oldValue, TValue newValue, ChangTransaction transaction)
: base(oldValue, newValue, transaction)
{
this.Cancel = false;
}
