/// <summary>
/// Raises this object's PropertyChanged event.
/// </summary>
private void RaisePropertyChanged(string propertyName, bool notifyDependentProperties,
IDictionary <string, object> processedProperties,
IDictionary <ICommand, object> processedCommands)
{
if (processedProperties.ContainsKey(propertyName))
{
return;
}
var eventArgs = new PropertyChangedEventArgs(propertyName);
if (PropertyChanged != null)
{
Dispatch(() => PropertyChanged(this, eventArgs));
}
// ReSharper disable AssignNullToNotNullAttribute
processedProperties.Add(propertyName, null);
// ReSharper restore AssignNullToNotNullAttribute
if (!notifyDependentProperties)
{
return;
}
if (DependentNotifications.TryGetValue(propertyName, out var dependentPropertyNotifications))
{
foreach (var dependentProperty in dependentPropertyNotifications)
{
RaisePropertyChanged(dependentProperty, true, processedProperties, processedCommands);
}
}
if (DependentCommandNotifications.TryGetValue(propertyName, out var dependendCommandNotifications))
{
foreach (var dependentCommand in dependendCommandNotifications)
{
if (processedCommands.ContainsKey(dependentCommand))
{
continue;
}
if (dependentCommand is RelayCommand relayCommand)
{
relayCommand.RaiseCanExecuteChanged();
}
// ReSharper disable AssignNullToNotNullAttribute
processedCommands.Add(dependentCommand, null);
// ReSharper restore AssignNullToNotNullAttribute
}
}
}
/// <summary>
/// Adds the dependent notification.
/// </summary>
/// <param name="basePropertyName">Name of the base property.</param>
/// <param name="dependendCommands">The dependend commands.</param>
public virtual void AddPropertyChangedNotification(string basePropertyName, params ICommand[] dependendCommands)
{
IList <ICommand> notifications;
if (DependentCommandNotifications.ContainsKey(basePropertyName))
{
notifications = DependentCommandNotifications[basePropertyName];
}
else
{
notifications = new List <ICommand>();
DependentCommandNotifications.Add(basePropertyName, notifications);
}
foreach (var notification in dependendCommands.Except(notifications))
{
notifications.Add(notification);
}
}
