public PhotoInfoViewModel()
{
BackCommand = new DelegateCommand(BackCommandHandler, null, false);
MapCommand = new DelegateCommand(MapCommandHandler, null, false);
navService = new NavigationService();
flRepository = new FlickrRepository();
exManager = new ExceptionManager();
}
public dynamic GetJson(string tags, bool cacheFlicker)
{
dynamic flickrRepository = null;
if (cacheFlicker)
flickrRepository = new FlickrCacheableRepository();
else
flickrRepository = new FlickrRepository();
return Json(flickrRepository.GetImagesByTags(tags), JsonRequestBehavior.AllowGet);
}
private void SearchImages(string title)
{
try
{
var flicrRepository = new FlickrRepository();
Photos = new ScrollableObservableCollection(flicrRepository.LoadImages(CurrentPage, title).Result, title);
}
catch (Exception ex)
{
exManager.PublishError(ex.Message);
}
}
public Windows.Foundation.IAsyncOperation <LoadMoreItemsResult> LoadMoreItemsAsync(uint count)
{
if (isRunning) //not thread safe
{
throw new InvalidOperationException("Only one operation in flight at a time");
}
isRunning = true;
int itemsCount = 0;
return(AsyncInfo.Run(async c =>
{
try
{
currentPage++;
FlickrRepository repository = new FlickrRepository();
var result = await repository.LoadImages(currentPage, title);
var photos = new PhotoCollection();
if (result != null)
{
photos = result;
HasMoreItems = result.Any();
itemsCount = result.Count;
}
foreach (var item in photos)
{
this.Add(item);
}
isRunning = false;
}
catch (Exception ex)
{
HasMoreItems = false;
exManager.PublishError(ex.Message);
}
LoadMoreItemsResult res = new LoadMoreItemsResult()
{
Count = (uint)itemsCount
};
return res;
}));
}
protected override IController GetControllerInstance(RequestContext requestContext, Type controllerType)
{
// Get config name
string repositoryTypeName = ConfigurationManager.AppSettings["RepositoryTypeName"];
// Get type, if not configured - default type.
Type type = Type.GetType(repositoryTypeName ?? "FlickrTest.Repository.FlickrRepository");
object repository = null;
if (null != type)
{
repository = Activator.CreateInstance(type) as IRepository;
}
// Fallback - config value/default is not of correct type.
if (null == repository)
{
repository = new FlickrRepository();
}
IController controller = Activator.CreateInstance(controllerType, new[] { repository }) as Controller;
return(controller);
}
public ActionResult GetImages(string tags, bool cached = true)
{
// keeps a more formatted data structure for front end
Dictionary <string, object> data = new Dictionary <string, object>();
if (cached)
{
var flickrCacheableRepository = new FlickrCacheableRepository();
data.Add("data", flickrCacheableRepository.GetImagesByTags(tags));
// mark as cached
data.Add("cached", 1);
return(Json(data, JsonRequestBehavior.DenyGet));
}
var flickrRepository = new FlickrRepository();
data.Add("data", flickrRepository.GetImagesByTags(tags));
// mark as not cached
data.Add("cached", 0);
return(Json(data, JsonRequestBehavior.DenyGet));
}
