public EventToCommandBinding(IEventBinding <TSource, TTarget, TEventArgs> binding, Expression <Func <TSource, TCommand> > commandExpression, Expression <Func <TTarget, bool> > canExecuteTargetPropertyExpression = null) :
base(binding)
{
Check.NotNull(commandExpression, nameof(commandExpression));
this.getCommand = commandExpression.Compile();
this.sourceRootNode = commandExpression.AsObservedNode();
this.sourceRootNode.Observe(this.Source, this.WhenCommandChanged);
if (canExecuteTargetPropertyExpression != null)
{
this.canExecuteTargetProperty = canExecuteTargetPropertyExpression.GetBindingExpression(this.Target);
this.WhenCommandChanged();
}
}
public override void Dispose()
{
this.sourceRootNode.Unobserve();
this.sourceRootNode = null;
base.Dispose();
}
