void IMesCommandUiItem.Update(MesCommandHandlerWrapper commandHandler)
{
if (_command != null && _command.CommandDefinition.IsList && !IsListItem)
{
foreach (MesStandardMenuItem listItem in _listItems)
{
_parent.Children.Remove(listItem);
}
_listItems.Clear();
List <MesCommand> listCommands = new List <MesCommand>();
commandHandler.Populate(_command, listCommands);
_command.Visible = false;
Int32 startIndex = _parent.Children.IndexOf(this) + 1;
foreach (MesCommand command in listCommands)
{
MesCommandMenuItem newMenuItem = new MesCommandMenuItem(command, _parent)
{
IsListItem = true
};
_parent.Children.Insert(startIndex++, newMenuItem);
_listItems.Add(newMenuItem);
}
}
}
public async void Execute(Object parameter)
{
MesCommandHandlerWrapper commandHandler = _commandRouter.GetCommandHandler(_command.CommandDefinition);
if (commandHandler == null)
{
return;
}
await commandHandler.Run(_command);
}
public Boolean CanExecute(Object parameter)
{
MesCommandHandlerWrapper commandHandler = _commandRouter.GetCommandHandler(_command.CommandDefinition);
if (commandHandler == null)
{
return(false);
}
commandHandler.Update(_command);
return(_command.Enabled);
}
private static MesCommandHandlerWrapper CreateCommandHandlerWrapper(Type commandDefinitionType, Object commandHandler)
{
if (typeof(MesCommandDefinition).IsAssignableFrom(commandDefinitionType))
{
return(MesCommandHandlerWrapper.FromCommandHandler(CommandHandlerInterfaceType.MakeGenericType(commandDefinitionType), commandHandler));
}
if (typeof(MesCommandListDefinition).IsAssignableFrom(commandDefinitionType))
{
return(MesCommandHandlerWrapper.FromCommandListHandler(CommandListHandlerInterfaceType.MakeGenericType(commandDefinitionType), commandHandler));
}
throw new InvalidOperationException();
}
void IMesCommandUiItem.Update(MesCommandHandlerWrapper commandHandler)
{
// TODO
}