/// <summary>
/// Handles the <see cref="ButtonBase.Click"/> event for the "Move Entity Up" <see
/// cref="Button"/> on any tab page.</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>OnEntityDown</b> swaps the first selected item in the "Entity Stack" list view with
/// its upper neighbor and sets the <see cref="DataChanged"/> flag.</remarks>
private void OnEntityUp(object sender, RoutedEventArgs args)
{
args.Handled = true;
ListView stackList;
Action onDataChanged;
if (args.Source == MoveTerrainUpButton)
{
stackList = TerrainList;
onDataChanged = OnTerrainTabChanged;
}
else
{
stackList = EntityList;
onDataChanged = OnOtherTabChanged;
}
// retrieve first selected item, if any
if (stackList.SelectedItems.Count == 0 || stackList.Items.Count < 2)
{
return;
}
// move item up and re-select it
object item = stackList.SelectedItem;
int index = CollectionsUtility.MoveItemUntyped(stackList.Items, item, -1);
stackList.SelectAndShow(Math.Max(0, index));
onDataChanged();
}
/// <summary>
/// Handles the <see cref="ButtonBase.Click"/> event for the "Move Frame Right" <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>OnFrameRight</b> swaps the selected item in the "Image Frames" list box with its
/// right neighbor and sets the <see cref="DataChanged"/> flag.</remarks>
private void OnFrameRight(object sender, RoutedEventArgs args)
{
args.Handled = true;
// retrieve selected item
object item = FrameList.SelectedItem;
if (FrameList.Items.Count < 2 || item == null)
{
return;
}
// move item right and re-select it
int index = CollectionsUtility.MoveItemUntyped(FrameList.Items, item, +1);
FrameList.SelectAndShow(index);
// frame list has changed
DataChanged = true;
}