protected void StarCore()
{
var previousSelection = new List <Message>(SelectedMessages);
// Contains instance copies of messages, this will be the old data
// before the do is applied.
var messagesCopy = SelectedMessages
.Select(m => m.DuckCopy <Message>())
.ToList();
#region Do action
Action doAction = delegate
{
foreach (var message in SelectedMessages.ToList())
{
if (SelectedMessage.IsStarred)
{
SelectedMessage.SetUnstarred();
}
else
{
SelectedMessage.SetStarred();
}
}
viewFilter.UpdateCurrentViewAsync();
flipper.Delay();
};
#endregion
#region Undo action
Action undoAction = delegate
{
foreach (var message in previousSelection)
{
// Get old message from copied data
Message message1 = message;
var oldMessage = messagesCopy.Single(m => m.MessageId == message1.MessageId);
// Reverts the previous action
message.IsStarred = oldMessage.IsStarred;
message.TargetMessageState = oldMessage.TargetMessageState;
AsyncUpdateQueue.Enqueue(message);
}
// We cannot use the IEditableObject appraoch here because the conversation in question
// probably might not be in view anymore. So instead we will refresh the whole view.
viewFilter.RebuildCurrentViewAsync();
};
#endregion
ClientState.Current.UndoManager.Execute(new HistoryAction(doAction, undoAction));
}
void Star_Executed(object sender, ExecutedRoutedEventArgs e)
{
if (SelectedMessage.IsStarred)
{
ClientStats.LogEvent("Star in message details view");
SelectedMessage.SetUnstarred();
}
else
{
ClientStats.LogEvent("Unstar in message details view");
SelectedMessage.SetStarred();
}
}