// ------------------------------------------------------------------
/// <summary>
/// Handles the OnEntityAdded event of the Page and adds the new
/// entity to the Paintables.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The
/// <see cref="T:Netron.Diagramming.Core.EntityEventArgs"/> instance
/// containing the event data.</param>
// ------------------------------------------------------------------
void mDefaultPage_OnEntityAdded(object sender, EntityEventArgs e)
{
//don't add it if it's already there or if it's a group (unless you want to deploy something special to emphasize a group shape).
if (!Paintables.Contains(e.Entity))
{
if ((e.Entity is IGroup) && !(e.Entity as IGroup).EmphasizeGroup)
{
return;
}
//set the new entity on top of the stack
e.Entity.SceneIndex = Paintables.Count;
Paintables.Add(e.Entity);
}
#region Addition callback
IAdditionCallback callback = e.Entity.GetService(typeof(IAdditionCallback)) as IAdditionCallback;
if (callback != null)
{
callback.OnAddition();
}
#endregion
RaiseOnEntityAdded(e);
}
// ------------------------------------------------------------------
/// <summary>
/// Handles the OnEntityRemoved event of the DefaultPage.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The
/// <see cref="T:Netron.Diagramming.Core.EntityEventArgs"/> instance
/// containing the event data.</param>
// ------------------------------------------------------------------
void mDefaultPage_OnEntityRemoved(object sender, EntityEventArgs e)
{
if (Paintables.Contains(e.Entity))
{
//shift the entities above the one to be removed
int index = e.Entity.SceneIndex;
foreach (IDiagramEntity entity in Paintables)
{
if (entity.SceneIndex > index)
{
entity.SceneIndex--;
}
}
Paintables.Remove(e.Entity);
}
//if the selection contains the shape we have to remove it from the selection
if (Selection.SelectedItems.Contains(e.Entity))
{
Selection.SelectedItems.Remove(e.Entity);
}
RaiseOnEntityRemoved(e);
}