public static bool RaiseIfChanging <TSource, TReturn>(this TSource source,
TReturn backingField,
TReturn newValue, MvxPropertyChangingEventArgs <TReturn> args)
where TSource : IMvxNotifyPropertyChanged
{
return(RaiseIfChanging(source, backingField, newValue, () => source.RaisePropertyChanging(args)));
}
public virtual bool RaisePropertyChanging <T>(MvxPropertyChangingEventArgs <T> changingArgs)
{
// check for interception before broadcasting change
if (InterceptRaisePropertyChanging(changingArgs)
== MvxInpcInterceptionResult.DoNotRaisePropertyChanging)
{
return(!changingArgs.Cancel);
}
if (ShouldLogInpc())
{
MvxLog.Instance.Trace($"Property '{changingArgs.PropertyName}' changing value to {changingArgs.NewValue.ToString()}");
}
PropertyChanging?.Invoke(this, changingArgs);
return(!changingArgs.Cancel);
}
public virtual bool RaisePropertyChanging <T>(MvxPropertyChangingEventArgs <T> changingArgs)
{
if (changingArgs == null)
{
return(false);
}
// check for interception before broadcasting change
if (InterceptRaisePropertyChanging(changingArgs)
== MvxInpcInterceptionResult.DoNotRaisePropertyChanging)
{
return(!changingArgs.Cancel);
}
if (ShouldLogInpc())
{
MvxLogHost.Default?.Log(LogLevel.Trace, "Property '{propertyName}' changing value to {newValue}",
changingArgs.PropertyName, changingArgs.NewValue);
}
PropertyChanging?.Invoke(this, changingArgs);
return(!changingArgs.Cancel);
}
public bool RaisePropertyChanging <T>(T newValue, [CallerMemberName] string whichProperty = "")
{
var changedArgs = new MvxPropertyChangingEventArgs <T>(whichProperty, newValue);
return(RaisePropertyChanging(changedArgs));
}