public MessageHistoryView()
{
this.InitializeComponent();
viewModel = null;
selectedMessage = null;
App.notificationManager.channel.PushNotificationReceived += OnPushNotification;
// Preserves the state of the page even after user has navigated away
// Appreciate this line of code! It took me 2 hours find a concise
// solution to saving the state of a page for ASP.NET UWP Windows 10!
this.NavigationCacheMode = NavigationCacheMode.Required;
}
public static void Navigate(Type sourcePage, object parameter)
{
if (parameter is MessageHistoryViewModel)
{
MessageHistoryViewModel vm = (MessageHistoryViewModel)parameter;
if (!vm.Equals(lastContext))
{
lastContext = vm;
}
}
frameInstance.Navigate(sourcePage, parameter);
}
public GroupsContent(GroupChat groupChat, string groupMembers)
{
group = groupChat;
groupName = this.group.Name;
groupIcon = getGroupIconChars(groupName);
this.groupMembers = groupMembers;
backgroundPath = null;
imageContainer = null;
strokes = new InkStrokeContainer();
messageHistoryViewModel = new MessageHistoryViewModel(this);
}
public ActionResult remove_message(MessageHistoryViewModel msg)
{
switch (msg.Source)
{
case 1:
{
var message = db.MessageLogs.Find(msg.Id);
db.MessageLogs.Remove(message);
}
break;
case 2:
{
var message = db.Messages.Find(msg.Id);
db.Messages.Remove(message);
}
break;
}
db.SaveChanges();
return(Json(new { success = true }, JsonRequestBehavior.AllowGet));
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
if (e.Parameter == null)
{
MessageHistoryGrid.Visibility = Visibility.Collapsed;
}
if (e.Parameter != null)
{
if (MessageHistoryGrid.Visibility == Visibility.Collapsed)
{
MessageHistoryGrid.Visibility = Visibility.Visible;
}
if (e.Parameter is MessageContent)
{
MessageContent msg = (MessageContent)e.Parameter;
viewModel.addToHistory(msg);
}
else if (e.Parameter is MessageHistoryViewModel)
{
MessageHistoryViewModel selectedViewModel = (MessageHistoryViewModel)e.Parameter;
viewModel = selectedViewModel;
if (LeftFrameNavigator.isSubFrameVisible())
{
viewModel.CanvasListButton = MessageHistoryViewModel.listImage;
}
else
{
viewModel.CanvasListButton = MessageHistoryViewModel.canvasImage;
}
this.DataContext = viewModel;
}
}
}
public static void SetLastContext(MessageHistoryViewModel context)
{
lastContext = context;
}
