private void SelectedGateway_Event(object sender, SelectionChangedEventArgs e)
{
if (e.AddedItems.Count > 0)
{
var item = e.AddedItems[0] as OneServerInfo;
this.CurrentGateway.Text = item.HostName;
var idx = GatewayList.IndexOf(item);
var cnt = GatewayList.Count;
if (idx >= 0)
{
var minShow = MinItemShowed;
var maxShow = MinItemShowed + NumberItemShowed - 1;
var midShow = (minShow + maxShow) / 2;
var diff = idx - midShow;
if (diff != 0)
{
var newMinShow = MinItemShowed;
OneServerInfo scrollItem = null;
if (diff < 0)
{
newMinShow = Math.Max(0, MinItemShowed + diff);
}
else
{
maxShow = Math.Min(cnt - 1, MinItemShowed + diff + NumberItemShowed - 1);
newMinShow = Math.Max(0, maxShow - NumberItemShowed + 1);
}
if (newMinShow != MinItemShowed)
{
int scrollidx = 0;
if (diff < 0)
{
scrollItem = GatewayList[newMinShow];
scrollidx = newMinShow;
}
else
{
scrollItem = GatewayList[maxShow];
scrollidx = maxShow;
}
MinItemShowed = newMinShow;
this.ViewOfGateway.ScrollIntoView(scrollItem);
}
}
}
}
}
private void AddGateway(String hostname, String info)
{
var serverInfo = new OneServerInfo();
serverInfo.HostName = hostname;
serverInfo.HostInfo = info;
OneServerInfo oldServer;
if (GatewayAdded.TryRemove(hostname, out oldServer))
{
this.GatewayList.Remove(oldServer);
}
var priorInfo = this.GatewayAdded.GetOrAdd(hostname, serverInfo);
if (Object.ReferenceEquals(priorInfo, serverInfo))
{
this.GatewayList.Add(serverInfo);
}
}
private void AddGateway(String hostname, String info)
{
var serverInfo = new OneServerInfo();
serverInfo.HostName = hostname;
serverInfo.HostInfo = info;
OneServerInfo oldServer;
if (GatewayAdded.TryRemove(hostname, out oldServer))
{
this.GatewayList.Remove(oldServer);
}
var priorInfo = this.GatewayAdded.GetOrAdd(hostname, serverInfo);
if (Object.ReferenceEquals(priorInfo, serverInfo))
{
this.GatewayList.Add(serverInfo);
}
}
