internal static ICommandBinding CreatePropertyBinding(object source, string sourcePropertyName, string targetPropertyName, Func <object, object> format, object[] targets, bool syncTargets)
{
if (source == null)
{
Throw.ArgumentNullException(Argument.source);
}
if (sourcePropertyName == null)
{
Throw.ArgumentNullException(Argument.sourcePropertyName);
}
if (targetPropertyName == null)
{
Throw.ArgumentNullException(Argument.targetPropertyName);
}
var state = new CommandState
{
{ stateSourcePropertyName, sourcePropertyName },
{ stateTargetPropertyName, targetPropertyName },
{ stateFormatValue, format }
};
bool isNotifyPropertyChanged = source is INotifyPropertyChanged;
string eventName = isNotifyPropertyChanged ? nameof(INotifyPropertyChanged.PropertyChanged) : sourcePropertyName + "Changed";
ICommandBinding result = UpdatePropertyCommand.CreateBinding(state)
.AddStateUpdater(NullStateUpdater.Updater)
.AddSource(source, eventName);
if (!targets.IsNullOrEmpty())
{
foreach (object target in targets)
{
result.AddTarget(target);
}
if (syncTargets)
{
result.InvokeCommand(source, eventName, isNotifyPropertyChanged ? new PropertyChangedEventArgs(sourcePropertyName) : EventArgs.Empty);
}
}
return(result);
}
public static ICommandBinding CreateBinding(this ICommand command, object source, string eventName, IDictionary <string, object> initialState = null, params object[] targets)
{
if (source == null)
{
Throw.ArgumentNullException(Argument.source);
}
if (eventName == null)
{
Throw.ArgumentNullException(Argument.eventName);
}
ICommandBinding result = command.CreateBinding(initialState).AddSource(source, eventName);
if (!targets.IsNullOrEmpty())
{
foreach (object target in targets)
{
result.AddTarget(target);
}
}
return(result);
}