public CommandHistoryEventListener( CommandHistory history )
{
m_executedCallCount = 0;
m_undoneCallCount = 0;
m_redoneCallCount = 0;
m_changedCallCount = 0;
m_clearedCallCount = 0;
history.ActionExecuted += new EventHandler<CommandEventArgs>( history_ActionExecuted );
history.ActionUndone += new EventHandler<CommandEventArgs>( history_ActionUndone );
history.ActionRedone += new EventHandler<CommandEventArgs>( history_ActionRedone );
history.Changed += new EventHandler( history_Changed );
history.Cleared += new EventHandler( history_Cleared );
}
/// <summary>
/// Make sure CommandHistory added as a service to given site.
/// </summary>
/// <param name="serviceProvider"></param>
/// <remarks>You have to make sure added IServiceContainer to this
/// serviceProvider.</remarks>
public static CommandHistory EnsureHasService(IServiceProvider serviceProvider = null)
{
CommandHistory result = null;
IServiceProvider sp = serviceProvider;
if (sp != null)
{
// Add this CommandHistory service if given service
// doesn't contains it.
result = sp.GetService(typeof(CommandHistory)) as CommandHistory;
if (result == null)
{
// If there are no service, added new instance.
IServiceContainer s = sp.GetService(typeof(IServiceContainer))
as IServiceContainer;
if (s == null)
{
throw new InvalidOperationException("empty service container");
}
result = new CommandHistory();
s.AddService(typeof(CommandHistory), result);
}
}
else
{
// If they don't have ISite, returns static instance.
if (staticCommandHistory == null)
staticCommandHistory = new CommandHistory();
result = staticCommandHistory;
}
return result;
}