private void Window_Deactivated(object sender, EventArgs e)
{
AppController.Current.CurrentlyInBackground = true;
ScrollToItem = ListOfItems.GetCurrentlyTopmostShownItem();
TopMostShownItem = ScrollToItem;
storeTweetMarkerOfCurrentSelectView();
}
public void ScrollToItemInListbox(IItem item)
{
if (item == null)
{
return;
}
if (lastScrollToTimes.ContainsKey(item.Id))
{
DateTime?lastTimeScrolledTo = lastScrollToTimes[item.Id];
if (lastTimeScrolledTo != null)
{
if (lastTimeScrolledTo.Value.AddSeconds(2) > DateTime.Now)
{
return;
}
}
}
lastScrollToTimes[item.Id] = DateTime.Now;
//AppController.Current.sendNotification("General", "Scroll to item", item.Text, "", item);
if (ListOfItems.listView_Tweets.ItemContainerGenerator.Status != System.Windows.Controls.Primitives.GeneratorStatus.GeneratingContainers)
{
AppController.Current.Logger.addDebugMessage("Scroll to item", "ItemContainerGenerator is free", item: item, type: DebugMessage.DebugMessageTypes.ScrollIntoView);
if (!ListOfItems.listView_Tweets.Items.Contains(item))
{
item = ListOfItems.GetCurrentlyTopmostShownItem();
AppController.Current.Logger.addDebugMessage("Scroll to item not displayed!", "Initated retrieval of new top item", item: item, type: DebugMessage.DebugMessageTypes.ScrollIntoView);
}
if (ListOfItems.listView_Tweets.Items.Count < 2)
{
return;
}
ListOfItems.listView_Tweets.Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Input, new Action(() =>
{
try
{
//ttt
//ListOfItems.listView_Tweets.ScrollIntoView(ListOfItems.listView_Tweets.Items[ListOfItems.listView_Tweets.Items.Count - 1]);
//ListOfItems.listView_Tweets.ScrollIntoView(item);
}
catch { }
}));
ScrollToItem = item;
}
else
{
AppController.Current.Logger.addDebugMessage("Scroll to item", "ItemContainerGenerator is in use", item: item, type: DebugMessage.DebugMessageTypes.ScrollIntoView);
if (!ListOfItems.listView_Tweets.Items.Contains(item))
{
item = ListOfItems.GetCurrentlyTopmostShownItem();
AppController.Current.Logger.addDebugMessage("Scroll to item not displayed!", "Initated retrieval of new top item", item: item, type: DebugMessage.DebugMessageTypes.ScrollIntoView);
}
ScrollToItem = item;
}
}
void ItemContainerGenerator_StatusChanged(object sender, EventArgs e)
{
if (ScrollToItem != null)
{
if (!ListOfItems.listView_Tweets.Items.Contains(ScrollToItem))
{
ScrollToItem = ListOfItems.GetCurrentlyTopmostShownItem();
AppController.Current.Logger.addDebugMessage("Listbox did not contain the CurrentTopMostItem", "Selected new one (if item is empty none has been found", item: ScrollToItem, type: DebugMessage.DebugMessageTypes.ScrollIntoView, view: comboBoxViews.SelectedItem as View);
}
if (ScrollToItem != null)
{
ScrollToItemInListbox(ScrollToItem);
}
}
ScrollToItem = null;
}