/// <summary>
/// React on the event that a view has been closed
/// </summary>
/// <param name="sender">The view that has been closed.</param>
/// <param name="e">The event's arguments.</param>
public void OnViewClosed(IView sender, EventArgs e)
{
try
{
if (sender != null && this.viewCollection.Contains(sender))
{
// the view belongs to this document!
this.viewCollection.Remove(sender);
this.viewControllerList.Remove(sender.ViewController);
if (this.viewCollection.Count == 0)
{
// the last view has been closed
// let this document and all associated data vanish
sender.Close();
System.Diagnostics.Debug.Assert(this.viewControllerList.Count == 0, "No Views in the List");
this.viewCollection = null;
this.viewControllerList = null;
AppContext.DocumentList.Remove(this);
AppContext.ViewClosed -= this.OnViewClosed;
this.docContent = null;
this.docObjects = null;
this.selectedObjects = null;
this.docName = string.Empty;
this.fileName = string.Empty;
GC.Collect(); // this a justifiable use of GC.Collect() since the last view of an document is closed and rather big amounts of data being freed.
}
}
}
catch (Exception ex)
{
Util.ReportException(ex);
}
}
/// <summary>
/// Initializes a new instance of the <see cref="Document"/> class
/// </summary>
/// <remarks>
/// Creates a new document.
/// </remarks>
public Document()
{
this.docObjects = new BaseObjectList();
this.viewCollection = new ViewCollection();
this.viewControllerList = new ViewControllerList();
this.selectedObjects = new BaseObjectList();
this.docName = string.Empty;
this.fileName = string.Empty;
this.docGuid = Guid.NewGuid();
AppContext.ViewClosed += this.OnViewClosed;
}
