/// <summary>
/// Handles the <see cref="Selector.SelectionChanged"/> event for the "Entity Class" <see
/// cref="ListView"/>.</summary>
/// <param name="sender">
/// The <see cref="Object"/> where the event handler is attached.</param>
/// <param name="args">
/// A <see cref="SelectionChangedEventArgs"/> object containing event data.</param>
/// <remarks>
/// <b>OnClassSelected</b> updates the "Site" list view to reflect the selected item in the
/// "Entity Class" list view, and then selects the first item in that list view, if any.
/// </remarks>
private void OnClassSelected(object sender, SelectionChangedEventArgs args)
{
args.Handled = true;
// clear Site list view & map view
SiteList.ItemsSource = null;
Array.Clear(this._mapView.SelectedRegion, 0, this._mapView.SelectedRegion.Length);
this._mapView.Redraw();
// retrieve selected entity class, if any
int index = ClassList.SelectedIndex;
if (index < 0)
{
return;
}
ClassListItem item = (ClassListItem)ClassList.Items[index];
EntityClass entityClass = item.Item1;
// retrieve placement sites, if any
var targets = this._classTargets[entityClass.Id];
List <SiteListItem> items = new List <SiteListItem>(targets.Count);
// add sites to list view & selected region
foreach (PointI target in targets)
{
this._mapView.SelectedRegion[target.X, target.Y] = true;
// get site at specified coordinates
Site site = this._worldState.GetSite(target);
// get owner of this site, if any
string owner = (site.Owner == null ?
ShowPlacements.OwnerNone : site.Owner.ToString());
items.Add(new SiteListItem(site.ToString(), owner, target));
}
// redraw highlighted region
this._mapView.Redraw();
// use ItemsSource for sorting & virtualization
items.Sort((x, y) => String.CompareOrdinal(x.Item1, y.Item1));
SiteList.ItemsSource = items;
// select first site, if any
if (SiteList.Items.Count > 0)
{
SiteList.SelectedIndex = 0;
}
}
/// <summary>
/// Handles the <see cref="Control.MouseDoubleClick"/> event for a <see
/// cref="ListViewItem"/> of the "Entity Class" <see cref="ListView"/>.</summary>
/// <param name="sender">
/// The <see cref="Object"/> where the event handler is attached.</param>
/// <param name="args">
/// A <see cref="MouseButtonEventArgs"/> object containing event data.</param>
/// <remarks>
/// <b>OnClassActivate</b> displays a <see cref="ShowClasses"/> dialog containing
/// information on the double-clicked item in the "Entity Class" list view.</remarks>
private void OnClassActivate(object sender, MouseButtonEventArgs args)
{
args.Handled = true;
// retrieve double-clicked item, if any
var source = args.OriginalSource as DependencyObject;
var listItem = ItemsControl.ContainerFromElement(ClassList, source) as ListViewItem;
if (listItem == null)
{
return;
}
// show info dialog for entity class
ClassListItem item = (ClassListItem)listItem.Content;
var dialog = new ShowClasses(item.Item1)
{
Owner = this
};
dialog.ShowDialog();
}
