public int AddCrumb(ICrumb crumb)
{
if (crumb == null)
{
throw new ArgumentNullException("Crumb");
}
Crumbs.Add(crumb);
AddViewToRegion(crumb.Content);
return(Crumbs.Count);
}
public int SetCrumbDescription(string description)
{
if (Crumbs.Count < 1)
{
return(-1);
}
ICrumb crumb = Crumbs.ElementAt <ICrumb>(Crumbs.Count - 1);
crumb.Description = description;
return(Crumbs.Count);
}
private IEnumerable <ICrumb> GetBroadcasters(ICrumb observer)
{
var result = new List <ICrumb>();
if (observer?.Broadcaster != null)
{
result.Add(observer.Broadcaster);
result.AddRange(GetBroadcasters(observer.Broadcaster));
}
return(result);
}
public int RemoveCrumb()
{
if (Crumbs.Count < 1)
{
return(-1);
}
Crumbs.RemoveAt(Crumbs.Count - 1);
ICrumb crumb = Crumbs.ElementAt <ICrumb>(Crumbs.Count - 1);
AddViewToRegion(crumb.Content);
return(Crumbs.Count);
}
private void OnCrumbAccessed(ICrumb crumb)
{
IRegion region = this._regionManager.Regions[RegionNames.MainRegion];
var indexInicial = Crumbs.IndexOf(crumb);
// Remove na ordem inversa
for (int i = (Crumbs.Count - 1); i > indexInicial; i--)
{
ICrumb c = Crumbs.ElementAt <ICrumb>(i);
region.Deactivate(c.Content.View);
region.Remove(c.Content.View);
Crumbs.RemoveAt(i);
}
region.Activate(crumb.Content.View);
}
public virtual void UnregisterObserver(ICrumb observer)
{
Observers.Remove(observer);
}
public virtual void RegisterObserver(ICrumb observer)
{
Observers.Add(observer);
observer.Broadcaster = this;
}
