public static List <Exhibit> GetFilteredExhibits(List <Artist> selectedArtists, List <TimePeriod> selectedTimePeriods,
List <ArtStyle> selectedArtStyles)
{
List <Exhibit> exhibits = ExhibitBase.GetExhibitBase().Exhibits;
if (selectedArtists is null)
{
selectedArtists = GetArtists(exhibits)
.ConvertAll(a => a.Artist);
}
if (selectedTimePeriods is null)
{
selectedTimePeriods = GetTimePeriods(exhibits)
.ConvertAll(tp => tp.TimePeriod);
}
if (selectedArtStyles is null)
{
selectedArtStyles = GetArtStyles(exhibits)
.ConvertAll(st => st.ArtStyle);
}
return(exhibits.FindAll((e) =>
selectedArtists.Exists(a => a.Name == e.Artist.Name) &&
selectedTimePeriods.Exists(tp => tp.Name == e.TimePeriod.Name) &&
selectedArtStyles.Exists(st => st.Name == e.ArtStyle.Name)));
}
public ExploreViewModel()
{
// Make a list of preselected routes
RouteInfo filter1 = new RouteInfo {
ImageSource = "", Name = "Classic"
};
filter1.ArtStyleFilter = new List <ArtStyle>
{
new ArtStyle("Classic")
};
RouteInfo filter2 = new RouteInfo {
ImageSource = "", Name = "17th century"
};
filter2.TimePeriodFilter = new List <TimePeriod>
{
new TimePeriod("17th century")
};
RouteInfo filter3 = new RouteInfo {
ImageSource = "", Name = "ALEKOS TZOMAKAS"
};
filter3.ArtistFilter = new List <Artist>
{
new Artist("ALEKOS TZOMAKAS")
};
PreselectedRoutes = new List <RouteInfo>
{
filter1,
filter2,
filter3
};
// Make a list of popular exhibits
ExhibitBase exhibitBase = ExhibitBase.GetExhibitBase();
PopularExhibits = new List <ExhibitInfo>();
var FavExhibits = exhibitBase.GetFavourites();
int exhibitCount = Math.Min(5, exhibitBase.Exhibits.Count);
for (int i = 0; i < exhibitCount; i++)
{
Exhibit exhibit = exhibitBase.Exhibits[i];
bool isFav = false;
if (FavExhibits.Contains(exhibit))
{
isFav = true;
}
PopularExhibits.Add(new ExhibitInfo(exhibit, isFav));
}
}
public FiltersViewModel()
{
// Create some demo exhibits
exhibits = ExhibitBase.GetExhibitBase().Exhibits;
// Find out all artists and deselect all of them
Artists = GetArtists(exhibits);
// Find out all time periods and deselect all of them
TimePeriods = GetTimePeriods(exhibits);
// Find out all art styles and deselect all of them
ArtStyles = GetArtStyles(exhibits);
}
private async Task LaunchScanner()
{
try
{
var scanner = DependencyService.Get <IQrScanningService>();
var result = await scanner.ScanAsync();
// TODO: Handle case when result is null
if (result != null)
{
ExhibitBase exhibitBase = ExhibitBase.GetExhibitBase();
Exhibit exhibit = exhibitBase.Exhibits.Find(e => e.Name == result);
await Navigation.PushAsync(new ExhibitPage(exhibit.ID));
}
}
catch (Exception ex)
{
Debug.WriteLine("Error during qrcode scanning:" + ex.Message);
// TODO: Return that scanning failed.
throw;
}
}
public ExhibitPage(Guid exhibitID)
{
InitializeComponent();
viewModel = new ExhibitViewModel();
ExhibitBase exhibitBase = ExhibitBase.GetExhibitBase();
var FavExhibits = exhibitBase.GetFavourites();
Exhibit exhibit = exhibitBase.Exhibits.Find((e) => e.ID == exhibitID);
viewModel.ImageSource = exhibit.ImageSource;
// TODO: Remove other attributes apart from ID from ExhibitID
viewModel.ExhibitID = exhibit.ID;
viewModel.ExhibitName = exhibit.Name;
viewModel.ExhibitDescription = ArtistBase.GetInstance().GetArtistBio(exhibit.Artist.Name);
viewModel.IsFavourite = FavExhibits.Contains(exhibit);
BindingContext = viewModel;
var tapGestureRecognizer = new TapGestureRecognizer();
tapGestureRecognizer.Tapped += (s, e) =>
{
// Switch favourite state
if (viewModel.IsFavourite)
{
// Unfavourite item
viewModel.IsFavourite = false;
exhibitBase.RemoveFavourite(viewModel.ExhibitID);
}
else
{
// Favourite item
viewModel.IsFavourite = true;
exhibitBase.AddFavourite(viewModel.ExhibitID);
}
// TODO: Do this using data binding
image_favourite.Source = viewModel.FavImageSource;
};
image_favourite.GestureRecognizers.Add(tapGestureRecognizer);
}
public FavouritesViewModel()
{
Favourites = ExhibitBase.GetExhibitBase().GetFavourites();
}