/// <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 all dialog controls to reflect the selected item in the
/// "Entity Class" list view.</remarks>
private void OnClassSelected(object sender, SelectionChangedEventArgs args)
{
args.Handled = true;
if (!this._initialized)
{
return;
}
// retrieve selected item, if any
int index = ClassList.SelectedIndex;
BuildListItem item = (index < 0 ? null : (BuildListItem)ClassList.Items[index]);
// show resources for selected entity class
ShowResources(item == null ? null : item.EntityClass);
// check if we can build the selected class
bool canBuild = (item != null && item.BuildCount > 0);
// enable Build & Place command for placeable entities
Debug.Assert(!canBuild || item.EntityClass != null);
BuildPlaceButton.IsEnabled = (canBuild &&
this._classTargets.ContainsKey(item.EntityClass.Id));
// enable Build Only command for all entities
BuildOnlyButton.IsEnabled = canBuild;
}
/// <summary>
/// Handles the <see cref="ButtonBase.Click"/> event for the "Build Only" <see
/// cref="Button"/>.</summary>
/// <param name="sender">
/// The <see cref="Object"/> where the event handler is attached.</param>
/// <param name="args">
/// A <see cref="RoutedEventArgs"/> object containing event data.</param>
/// <remarks>
/// <b>OnClassBuildOnly</b> issues a <see cref="BuildCommand"/> for the selected item in the
/// "Entity Class" list view, if any, and updates all dialog controls to reflect the changed
/// entity and resource counts.</remarks>
private void OnClassBuildOnly(object sender, RoutedEventArgs args)
{
args.Handled = true;
// retrieve selected item, if any
int index = ClassList.SelectedIndex;
BuildListItem item = (index < 0 ? null : (BuildListItem)ClassList.Items[index]);
// quit if nothing to build
if (item == null || item.BuildCount <= 0)
{
return;
}
// issue Build command
Debug.Assert(item.EntityClass != null);
AsyncAction.BeginRun(delegate {
Session.Instance.Executor.ExecuteBuild(this._worldState, item.EntityClass.Id, 1);
AsyncAction.BeginInvoke(delegate {
// show new entity and build counts
ShowClassCounts();
// reselect item to update dialog
ClassList.SelectedIndex = -1;
ClassList.SelectAndShow(index);
AsyncAction.EndRun();
});
});
}
/// <summary>
/// Handles the <see cref="ButtonBase.Click"/> event for the "Build & Place" <see
/// cref="Button"/>.</summary>
/// <param name="sender">
/// The <see cref="Object"/> where the event handler is attached.</param>
/// <param name="args">
/// A <see cref="RoutedEventArgs"/> object containing event data.</param>
/// <remarks>
/// <b>OnClassBuildPlace</b> sets the <see cref="BuildingClass"/> property to the selected
/// item in the "Entity Class" list view, if any, and then closes the dialog with a <see
/// cref="Window.DialogResult"/> of <c>true</c>. The caller should allow the user to select
/// a placement site for the new <see cref="BuildingClass"/> instance.</remarks>
private void OnClassBuildPlace(object sender, RoutedEventArgs args)
{
args.Handled = true;
// retrieve selected item, if any
int index = ClassList.SelectedIndex;
BuildListItem item = (index < 0 ? null : (BuildListItem)ClassList.Items[index]);
// quit if nothing to build
if (item == null || item.BuildCount <= 0)
{
return;
}
// quit if entity cannot be placed
Debug.Assert(item.EntityClass != null);
if (!this._classTargets.ContainsKey(item.EntityClass.Id))
{
return;
}
// communicate entity class to caller
BuildingClass = item.EntityClass;
// close dialog automatically
DialogResult = true;
Close();
}
/// <summary>
/// Handles the <see cref="Control.MouseDoubleClick"/> event for a <see
/// cref="ListViewItem"/> of the hosted <see cref="PropertyListView"/>.</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>OnResourceActivate</b> displays a <see cref="ShowVariables"/> dialog containing
/// information on the selected item in the "Resource" list view.</remarks>
private void OnResourceActivate(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 resource class
BuildListItem item = (BuildListItem)listItem.Content;
var dialog = new Dialog.ShowVariables(item.ResourceClass)
{
Owner = this
};
dialog.ShowDialog();
}
/// <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;
}
}
}
