/// <summary>
/// Handles the <see cref="ToggleButton.Checked"/> event for the "Category" <see
/// cref="RadioButton"/> controls.</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>OnCategoryChecked</b> updates the "Entity Class" list view to reflect the selected
/// "Category" radio button, and then selects the first item in that list view, if any.
/// </remarks>
private void OnCategoryChecked(object sender, RoutedEventArgs args)
{
args.Handled = true;
// switch category (default to Unit)
EntityCategory category = EntityCategory.Unit;
if (UnitToggle.IsChecked == true)
{
category = EntityCategory.Unit;
this._classTargets = this._unitTargets;
}
else if (TerrainToggle.IsChecked == true)
{
category = EntityCategory.Terrain;
this._classTargets = this._terrainTargets;
}
else
{
Debug.Fail("ShowPlacements.OnCategoryChecked: No Category button checked.");
category = EntityCategory.Unit;
this._classTargets = this._unitTargets;
}
// get all buildable classes of current category
var buildableClasses = this._faction.GetBuildableClasses(category);
EntitySection entities = MasterSection.Instance.Entities;
ClassList.Items.Clear();
foreach (var pair in this._classTargets)
{
// get entity class for current target, if any
EntityClass entityClass = entities.GetEntity(pair.Key);
if (entityClass == null)
{
continue;
}
// check if specified faction can build entity class
bool canBuild = buildableClasses.ContainsKey(entityClass.Id);
string check = (canBuild ? CheckMark : "");
ClassList.Items.Add(new ClassListItem(entityClass, check));
}
// select first entity class, if any
if (ClassList.Items.Count > 0)
{
ClassList.SelectedIndex = 0;
}
}
/// <summary>
/// Copies all image frames for all entity classes to the bitmap catalog.</summary>
/// <param name="copying">
/// <c>true</c> to perform the actual copy; <c>false</c> to set catalog indices and count
/// animation frames only.</param>
/// <param name="frames">
/// Returns the maximum number of animation frames (i.e. frames of animated images) copied
/// for any single entity class.</param>
/// <returns>
/// The total number of catalog tiles used or required to hold all image frames for all
/// entity classes, plus one tile for the "invalid" icon at index position zero.</returns>
/// <remarks>
/// <b>CopyEntityClasses</b> invokes <see cref="CopyEntityClass"/> for each entity class, of
/// any category, defined in the current <see cref="EntitySection"/>. Please refer to
/// <b>CopyEntityClass</b> for details on the copying process.</remarks>
private int CopyEntityClasses(bool copying, out int frames)
{
// reset counters
frames = 0;
int index = (int)CatalogIndex.Images;
// iterate through all entity categories
EntitySection entitySection = MasterSection.Instance.Entities;
foreach (EntityCategory category in EntitySection.AllCategories)
{
IList <EntityClass> entities = entitySection.GetEntities(category).Values;
// copy all image frames for each entity class
foreach (EntityClass entity in entities)
{
int copied = CopyEntityClass(copying, entity, ref index);
frames = Math.Max(frames, copied);
}
}
// return tile count
return(index);
}
