protected async override void OnNavigatedTo(NavigationEventArgs e)
{
if (e.Parameter is API.ItemsGetterUtil.ViewSource)
{
this.Source = (API.ItemsGetterUtil.ViewSource)e.Parameter;
this.ApiContent = await API.ItemsGetter.Fetch(app.Settings.Instance.APIProvider, this.Source);
UpdatePresentedContent();
}
else
{
throw new Exception("Invalid Parameter provided");
}
}
internal static TItem[] GetItems <TEntity, TItem>(TEntity entity, ItemsGetter <TEntity, TItem> getter)
{
int count;
ThrowExceptionForHR(getter(entity, 0, out count, null));
if (count == 0)
{
return(null);
}
var result = new TItem[count];
ThrowExceptionForHR(getter(entity, count, out count, result));
ValidateItems(count, result.Length);
return(result);
}
private static TItem[] GetItems <TEntity, TItem>(
TEntity entity, CountGetter <TEntity> countGetter, ItemsGetter <TEntity, TItem> itemsGetter)
{
int count;
ThrowExceptionForHR(countGetter(entity, out count));
if (count == 0)
{
return(null);
}
var result = new TItem[count];
ThrowExceptionForHR(itemsGetter(entity, count, out count, result));
ValidateItems(count, result.Length);
return(result);
}
private static TItem[] GetItems <TEntity, TArg1, TArg2, TItem>(TEntity entity, TArg1 arg1, TArg2 arg2, ItemsGetter <TEntity, TArg1, TArg2, TItem> getter)
{
int count;
int hr = getter(entity, arg1, arg2, 0, out count, null);
ThrowExceptionForHR(hr);
if (count == 0)
{
return(null);
}
var result = new TItem[count];
hr = getter(entity, arg1, arg2, count, out count, result);
ThrowExceptionForHR(hr);
ValidateItems(count, result.Length);
return(result);
}
