/// <summary>
/// Handles the <see cref="ButtonBase.Click"/> event for the "Change Terrain" <see
/// cref="Button"/> on the <see cref="TerrainTab"/> 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>OnBackgroundChange</b> shows the <see cref="Dialog.ChangeTemplate"/> dialog with the
/// selected item in the "Terrain Class" combo box, if any, and calls <see
/// cref="OnTerrainTabChanged"/> if the user made any changes.</remarks>
private void OnBackgroundChange(object sender, RoutedEventArgs args)
{
args.Handled = true;
if (!this._initialized)
{
return;
}
// retrieve background terrain, if any
EntityTemplate template = (EntityTemplate)BackgroundCombo.Tag;
if (template == null)
{
return;
}
// attempt to find underlying entity class
EntityClass entityClass;
if (!ChangeTemplate.CanEdit(this, template, out entityClass))
{
return;
}
// show Change Template dialog
var dialog = new ChangeTemplate(template, entityClass)
{
Owner = this
};
dialog.ShowDialog();
// broadcast data changes
if (dialog.DataChanged)
{
OnTerrainTabChanged();
}
}
/// <summary>
/// Handles the <see cref="ButtonBase.Click"/> event for the "Change Entity" <see
/// cref="Button"/> and the <see cref="Control.MouseDoubleClick"/> event for the "Entity
/// Stack" <see cref="ListView"/> 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>OnEntityChange</b> shows the <see cref="Dialog.ChangeTemplate"/> dialog with either
/// the first selected item or the double-clicked item in the "Entity Stack" list view,
/// depending on the exact type of the specified <paramref name="args"/>, and sets the <see
/// cref="DataChanged"/> flag if the user made any changes.</remarks>
private void OnEntityChange(object sender, RoutedEventArgs args)
{
args.Handled = true;
ListView stackList;
Action onDataChanged;
if (TerrainTab.IsSelected)
{
stackList = TerrainList;
onDataChanged = OnTerrainTabChanged;
}
else
{
stackList = EntityList;
onDataChanged = OnOtherTabChanged;
}
// determine which event occurred
int index = -1;
if (args.RoutedEvent == ListViewItem.MouseDoubleClickEvent)
{
// retrieve double-clicked entity, if any
var source = args.OriginalSource as DependencyObject;
var listItem = ItemsControl.ContainerFromElement(stackList, source) as ListViewItem;
if (listItem != null)
{
index = stackList.Items.IndexOf(listItem.Content);
}
}
else
{
// retrieve selected entity, if any
index = stackList.SelectedIndex;
}
if (index < 0)
{
return;
}
EntityListItem item = (EntityListItem)stackList.Items[index];
EntityTemplate template = item.Item2;
// attempt to find underlying entity class
EntityClass entityClass;
if (!ChangeTemplate.CanEdit(this, template, out entityClass))
{
return;
}
// show Change Template dialog
var dialog = new ChangeTemplate(template, entityClass)
{
Owner = this
};
dialog.ShowDialog();
// broadcast data changes
if (dialog.DataChanged)
{
item = new EntityListItem(GetEntityText(template), item.Item2);
stackList.Items[index] = item;
stackList.SelectAndShow(index);
onDataChanged();
}
}
