public Pages(IPage minimum, IPage maximum, IPage current, Int32 rangeSize)
{
Current = current;
var operatorMinimum = new OperatorBox(minimum);
var operatorMaximum = new OperatorBox(maximum);
var operatorCurrent = new OperatorBox(current);
var first = operatorCurrent - rangeSize / 2;
var last = operatorCurrent + rangeSize / 2;
while (first < operatorMinimum)
{
first++;
if (last < operatorMaximum)
{
last++;
}
}
while (last > operatorMaximum)
{
if (first > operatorMinimum)
{
first--;
}
last--;
}
var operatorList = new List <OperatorBox>();
for (var page = first; page <= last; page++)
{
operatorList.Add(page);
}
List = operatorList.Select(p => p.Item).ToList();
var operatorMoreBack = operatorList.First() - 1;
HasMoreBack = operatorMoreBack >= operatorMinimum;
MoreBack = operatorMoreBack.Item;
var operatorMoreForward = operatorList.Last() + 1;
HasMoreForward = operatorMoreForward <= operatorMaximum;
MoreForward = operatorMoreForward.Item;
}
protected Boolean equals(OperatorBox other)
{
return(Item.Equals(other.Item));
}