/// <summary>
/// Perform redo of this command.
/// </summary>
public override void Redo()
{
//remove the group from the layer
this.Controller.Model.DefaultPage.DefaultLayer.Entities.Remove(mGroup);
//detach the entities from the group
foreach (IDiagramEntity entity in mGroup.Entities)
{
//this will be recursive if an entity is itself an IGroup
entity.Group = null;
bundle.Entities.Add(entity);
//mGroup.Entities.Remove(entity);
}
//change the visuals such that the entities in the group are selected
CollectionBase <IDiagramEntity> col = new CollectionBase <IDiagramEntity>();
col.AddRange(mGroup.Entities);
Selection.SelectedItems = col;
mGroup.Invalidate();
mGroup = null;
//note that the entities have never been disconnected from the layer
//so they don't have to be re-attached to the anything.
//The insertion of the Group simply got pushed in the scene-graph.
}
/// <summary>
/// Sets the current page.
/// </summary>
/// <param name="page">The page.</param>
public void SetCurrentPage(IPage page)
{
mCurrentPage = page;
RaiseOnAmbienceChanged(new AmbienceEventArgs(page.Ambience));
//change the paintables as well
mPaintables = new CollectionBase <IDiagramEntity>();
#region Reload of the z-order, usually only necessary after deserialization
CollectionBase <IDiagramEntity> collected = new CollectionBase <IDiagramEntity>();
//pick up the non-group entities
foreach (IDiagramEntity entity in mCurrentPage.DefaultLayer.Entities)
{
if (!typeof(IGroup).IsInstanceOfType(entity))
{
collected.Add(entity);
}
}
if (collected.Count > 0)
{
Algorithms.SortInPlace <IDiagramEntity>(collected, new SceneIndexComparer <IDiagramEntity>());
mPaintables.AddRange(collected);
}
#endregion
}