/// <summary>
/// Responds to the save command from the current (sub) view model.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void _currentViewModel_OnSaved(object sender, System.EventArgs e)
{
if (CurrentViewModel is VirtualHostVM)
{
var vHost = ((VirtualHostVM)CurrentViewModel).SelectedVirtualHost;
if (vHost == null)
{
return;
}
var old = VirtualHosts.FirstOrDefault(p => p.Id == vHost.Id);
if (old == null)
{
VirtualHosts.Add(vHost);
}
else
{
var idx = VirtualHosts.IndexOf(old);
VirtualHosts.Remove(old);
VirtualHosts.Insert(idx, vHost);
}
// This bypasses the INotify event.
// Currently there doesn't seem much point firing the event, but this may change later.
_selectedVirtualHost = vHost;
}
else if (CurrentViewModel is HostFileEntryVM)
{
var host = ((HostFileEntryVM)CurrentViewModel).CurrentHostFileEntry;
if (host == null)
{
return;
}
var old = HostFileEntries.FirstOrDefault(p => p.Id == host.Id);
if (old == null)
{
HostFileEntries.Add(host);
}
else
{
var idx = HostFileEntries.IndexOf(old);
HostFileEntries.Remove(old);
HostFileEntries.Insert(idx, host);
}
// This bypasses the INotify event.
// Currently there doesn't seem much point firing the event, but this may change later.
_selectedHostFileEntry = host;
}
}
/// <summary>
/// Sets associated objects when required.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void _objectViewModel_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
if (e == null)
{
return;
}
object obj = null;
switch (e.PropertyName)
{
case "CurrentHostFileEntry":
// Set the backing value so we skip the actions that occur when assigning to the public property.
_selectedVirtualHost = VirtualHosts.FirstOrDefault(
p => p.ServerName == SelectedHostFileEntry.Url ||
p.ServerAlias == SelectedHostFileEntry.Url);
// Assign found value to obj, even if null as this will tell the viewmodel to clear the property.
obj = _selectedVirtualHost;
// Now we need to raise the property changed event on the changed property to allow UI to react.
OnPropertyChanged("SelectedVirtualHost");
break;
case "SelectedVirtualHost":
_selectedHostFileEntry = HostFileEntries.FirstOrDefault(
p => p.Url == SelectedVirtualHost.ServerName ||
p.Url == SelectedVirtualHost.ServerAlias);
obj = _selectedHostFileEntry;
OnPropertyChanged("SelectedHostFileEntry");
break;
default:
// If not a property we want to act on we should return to prevent setting unwanted values.
return;
}
CurrentViewModel.SetAssociatedObject(obj);
}