/// <summary>
/// Updates the "Entity Class" <see cref="ListView"/> with the current "Category" and
/// "Filter" choices.</summary>
/// <param name="select">
/// <c>true</c> to select the previously selected item, if any, or else the first item in
/// the "Entity Class" <see cref="ListView"/>; <c>false</c> to not select any item.</param>
private void UpdateClasses(bool select)
{
// remember selected item, if any
BuildListItem selectedItem = null;
if (select)
{
int index = ClassList.SelectedIndex;
if (index >= 0)
{
selectedItem = (BuildListItem)ClassList.Items[index];
}
}
// clear Entity Class list view
ClassList.Items.Clear();
// get all buildable classes for current category
var classes = this._faction.GetBuildableClasses(CurrentCategory);
// quit if no buildable classes
if (classes == null || classes.Count == 0)
{
return;
}
// get current filter settings
bool?showSite = SiteToggle.IsChecked;
bool?showPlace = PlaceToggle.IsChecked;
foreach (EntityClass entityClass in classes.Values)
{
// get all place targets for entity class
IList <PointI> targets;
this._classTargets.TryGetValue(entityClass.Id, out targets);
// Site filter: skip classes without this place target
if (showSite == true &&
(targets == null || !targets.Contains(this._selectedSite)))
{
continue;
}
// Can Place filter: skip classes with or without place targets
if ((showPlace == true && targets == null) ||
(showPlace == false && targets != null))
{
continue;
}
ClassList.Items.Add(new BuildListItem(entityClass));
}
// show current & build counts
ShowClassCounts();
// select remembered or first item, if any
if (select && ClassList.Items.Count > 0)
{
if (selectedItem != null)
{
for (int i = 0; i < ClassList.Items.Count; i++)
{
var item = (BuildListItem)ClassList.Items[i];
if (item.EntityClass == selectedItem.EntityClass)
{
ClassList.SelectedIndex = i;
ClassList.ScrollIntoView(item);
break;
}
}
}
if (ClassList.SelectedIndex < 0)
{
ClassList.SelectedIndex = 0;
}
}
}
