private void AddProvider(RecogEngine entry)
{
var id = entry.RecogEngineID;
RecogEngine oldServer;
if (ProviderAdded.TryRemove(id, out oldServer))
{
this.ProviderList.Remove(oldServer);
}
var priorInfo = this.ProviderAdded.GetOrAdd(id, entry);
if (Object.ReferenceEquals(priorInfo, entry))
{
this.ProviderList.Add(entry);
}
}
private void SelectedProvider_Event(object sender, SelectionChangedEventArgs e)
{
if (e.AddedItems.Count > 0)
{
var item = e.AddedItems[0] as RecogEngine;
this.CurrentProvider.Text = item.RecogEngineName;
var idx = ProviderList.IndexOf(item);
var cnt = ProviderList.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;
RecogEngine 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 = ProviderList[newMinShow];
scrollidx = newMinShow;
}
else
{
scrollItem = ProviderList[maxShow];
scrollidx = maxShow;
}
MinItemShowed = newMinShow;
this.ViewOfProvider.ScrollIntoView(scrollItem);
}
}
}
}
}
private void findSelectedProvider()
{
RecogEngine selected = null;
foreach (var item in ProviderAdded)
{
if (String.Compare(this.CurrentProvider.Text, item.Value.RecogEngineName, StringComparison.OrdinalIgnoreCase) == 0)
{
selected = item.Value;
}
}
if (!Object.ReferenceEquals(selected, null))
{
var currentApp = (App)App.Current;
currentApp.CurrentProvider = selected;
}
}