public ActionResult <ImageLabelNavigationResult> Blank(long topicId, [FromQuery(Name = "")] NavigationParameter navigationParameter)
{
return(Execute(topicId, (topic) =>
{
ImageLabelNavigationResult result = GetImageLabelNavigationResult(topic, navigationParameter, ENavigationDirection.Blank);
if (result == null)
{
// if no next blank image found then stay on current image
return Navigate(topic, navigationParameter, ENavigationDirection.Direct);
}
return Ok(result);
}));
}
public ActionResult <ImageLabelNavigationResult> LastBlank(long topicId, [FromQuery(Name = "")] NavigationParameter navigationParameter)
{
return(Execute(topicId, (topic) =>
{
ImageLabelNavigationResult result = GetImageLabelNavigationResult(topic, navigationParameter, ENavigationDirection.LastBlank);
if (result == null)
{
// if no last blank image found then navigate to first image
navigationParameter.Index = 0;
return Navigate(topic, navigationParameter, ENavigationDirection.Direct);
}
return Ok(result);
}));
}
private ActionResult Navigate(Topic topic, NavigationParameter navigationParameter, ENavigationDirection navigationDirection)
{
#region validation
CheckMandatoryParameter(nameof(navigationParameter), navigationParameter);
#endregion
// create naviation result
ImageLabelNavigationResult result = GetImageLabelNavigationResult(topic, navigationParameter, navigationDirection);
if (result != null)
{
return(Ok(result));
}
return(NotFound());
}
