// Return string of rendered menu
public string Draw(int textWidth = 40, int textHeight = 7)
{
// long clock = DateTime.Now.Ticks; // used to scroll menu text if it is too wide
string output = "";
var currentItem = this.path.Peek();
if (currentItem == null)
{
throw new Exception("Menu: currentItem is null");
}
output += this.breadcrumbs() + "\n\n";
int selected = currentItem.children.IndexOf(this.selectedItem);
int start = 0;
int length = currentItem.children.Count;
if (selected > (textHeight - 2) / 2)
{
start = selected - (textHeight - 2) / 2;
}
if (length > textHeight - 2)
{
length = textHeight - 2;
}
if (start + length > currentItem.children.Count)
{
start = currentItem.children.Count - (textHeight - 2);
length = textHeight - 2;
}
if (start < 0)
{
start = 0;
}
for (int n = start; (n < (start + length) && n < currentItem.children.Count); n++)
{
EasyMenuItem child = currentItem.children[n];
if (child == this.selectedItem)
{
// Todo, if text is too wide, have it scroll horizontally
output += "> " + child.GetText() + " <\n";
}
else
{
output += child.GetText() + "\n";
}
}
return(output);
}
public int CompareTo(object obj)
{
if (obj == null)
{
return(1);
}
EasyMenuItem otherItem = obj as EasyMenuItem;
if (otherItem != null)
{
return(this.GetText().CompareTo(otherItem.GetText()));
}
else
{
throw new ArgumentException("Object is not a EasyMenuItem");
}
}
