private ILink GetPreviousLink(int size, int offset, int limit)
{
if (offset == 0)
{
return(null);
}
if (offset > size)
{
return(GetLastLink(size, limit));
}
var previousPage = Math.Max(offset - limit, 0);
if (previousPage <= 0)
{
return(GetFirstLink());
}
var newLink = new PlaceholderLink(_meta);
newLink.Values.Add("limit", limit);
newLink.Values.Add("offset", previousPage);
return(newLink);
}
public RootModel()
{
Meta = new PlaceholderLink()
{
Href = "/",
Method = "GET"
};
}
public Form(string path, string method, string relation, IEnumerable <FormField> fields)
{
Meta = new PlaceholderLink
{
Href = path,
Method = method,
Relations = new[] { relation }
};
Items = fields.ToArray();
}
private ILink GetNextLink(int size, int offset, int limit)
{
var nextPage = offset + limit;
if (nextPage >= size)
{
return(null);
}
var newLink = new PlaceholderLink(_meta);
newLink.Values.Add("limit", limit);
newLink.Values.Add("offset", nextPage);
return(newLink);
}
private ILink GetLastLink(int size, int limit)
{
if (size <= limit)
{
return(GetFirstLink());
}
var offset = Math.Ceiling((size - (double)limit) / limit) * limit;
var newLink = new PlaceholderLink(_meta);
newLink.Values.Add("limit", limit);
newLink.Values.Add("offset", offset);
return(newLink);
}