/// <summary>
/// Executes the action.
/// </summary>
/// <param name="sender">The <see cref="T:System.Object"/> that is passed to the action by the behavior. Generally this is <seealso cref="P:Microsoft.Xaml.Interactivity.IBehavior.AssociatedObject"/> or a target object.</param><param name="parameter">The value of this parameter is determined by the caller.</param>
/// <remarks>
/// An example of parameter usage is EventTriggerBehavior, which passes the EventArgs as a parameter to its actions.
/// </remarks>
/// <returns>
/// Returns the result of the action.
/// </returns>
public object Execute(object sender, object parameter)
{
ICommand command = Command;
// Use either our set parameter, or the passed parameter.
object commandParameter = (base.ReadLocalValue(CommandParameterProperty) != DependencyProperty.UnsetValue)
? CommandParameter : parameter;
// Reach in and get the specific property if we have a path specified
if (commandParameter != null && CommandParameterPath != null)
{
Binding binding = new Binding {
Source = commandParameter, Path = CommandParameterPath
};
NameScopeBinding nsb = new NameScopeBinding();
BindingOperations.SetBinding(nsb, NameScopeBinding.SourceProperty, binding);
commandParameter = nsb.Source;
}
if ((command != null) && command.CanExecute(commandParameter))
{
command.Execute(commandParameter);
return(true);
}
return(false);
}
private void RunPasses(CompilationUnit unit)
{
DeclarationBinding sb = container[typeof(DeclarationBinding)] as DeclarationBinding;
NameScopeBinding ns = container[typeof(NameScopeBinding)] as NameScopeBinding;
sb.ExecutePass(unit);
ns.ExecutePass(unit);
}
/// <summary>
/// This is called to execute the command when the trigger conditions are satisfied.
/// </summary>
/// <param name="parameter">parameter (not used)</param>
protected override void Invoke(object parameter)
{
ICommand command = Command;
//TODO: need to find a way to detect Binding here - BindingOperations.IsDataBound
object commandParameter = CommandParameter ?? parameter;
// Reach in and get the specific property
if (commandParameter != null && CommandParameterPath != null)
{
Binding binding = new Binding {
Source = commandParameter, Path = CommandParameterPath
};
NameScopeBinding nsb = new NameScopeBinding();
BindingOperations.SetBinding(nsb, NameScopeBinding.SourceProperty, binding);
commandParameter = nsb.Source;
}
if ((command != null) && command.CanExecute(commandParameter))
{
command.Execute(commandParameter);
}
}
