// To scroll to the bottom when new item is added to the list
private void MessagesScrollViewer_ScrollChanged(object sender, ScrollChangedEventArgs e)
{
if (canScrollToEnd) // If new item is being added to the list. If it false means that user is scrolling manually
{
MessagesScrollViewer.ScrollToEnd();
canScrollToEnd = false; // The message is no longer being added
}
}
private void SendMessage_OnClick(object sender, RoutedEventArgs e)
{
try
{
Message m = new Message()
{
DateOfSending = DateTime.Now,
From = TeacherOrStudentListView.SelectedItem.GetType() == typeof(Teacher)
? ((Teacher)TeacherOrStudentListView.SelectedItem).TeacherName
: ((Student)TeacherOrStudentListView.SelectedItem).StudentName,
GroupName = ((Group)GroupListView.SelectedItem).GroupName,
Type = TeacherOrStudentListView.SelectedItem.GetType() == typeof(Teacher)
? "Teacher"
: "Student",
Msg = InputMessageTextBox.Text
};
if (UseRabbitMqRadioButton.IsChecked != null && (bool)UseRabbitMqRadioButton.IsChecked)
{
RestRequest request = new RestRequest("AddMessage/{GroupName}/{Message}", Method.POST);
request.AddUrlSegment("GroupName", ((Group)GroupListView.SelectedItem).GroupName);
request.AddUrlSegment("Message", InputMessageTextBox.Text);
string content;
_client.ExecuteAsync(request, response => { content = response.Content; });
PublishMessage(m, m.GroupName);
}
else
{
Thread receiveThread = new Thread(Receiver);
receiveThread.Start();
Chat.Send(m);
//MessageTextBlock.Dispatcher.InvokeAsync(() =>
//{
// MessageTextBlock.Text += $"\n From : {m.Type} , Name : {m.From} , Date : {m.DateOfSending} \n\tMessage : {m.Msg}";
//});
}
MessagesScrollViewer.ScrollToEnd();
InputMessageTextBox.Text = null;
}
catch (Exception exception)
{
ErrorOrSuccesTextBlock.Dispatcher.InvokeAsync(() => { ErrorOrSuccesTextBlock.Text += exception; });
}
}
private void DisplayReceivedMessage(MessageModel message)
{
TextBox msg = new TextBox
{
Text = message.content,
Style = (Style)FindResource("ReceivedMessageStyle"),
};
Label sender = new Label
{
Content = message.senderusername + " " + message.timestamp,
Style = (Style)FindResource("SenderName"),
HorizontalAlignment = HorizontalAlignment.Left
};
Messages.Children.Add(sender);
Messages.Children.Add(msg);
MessagesScrollViewer.ScrollToEnd();
}
public void DisplaySentMessage(Message message)
{
TextBox msg = new TextBox
{
Text = message.content,
Style = (Style)FindResource("SentMessageStyle"),
};
Label sender = new Label
{
Content = message.senderUsername + " " + message.timestamp,
Style = (Style)FindResource("SenderName"),
HorizontalAlignment = HorizontalAlignment.Right
};
Messages.Children.Add(sender);
Messages.Children.Add(msg);
MessagesScrollViewer.ScrollToEnd();
}
private void ItemContainerGenerator_ItemsChanged(object sender, System.Windows.Controls.Primitives.ItemsChangedEventArgs e)
{
MessagesScrollViewer.ScrollToEnd();
}