public async void CreateChatCommandExecute(object obj) { if (this.isCreating) { return; } this.isCreating = true; if (Users == null) { return; } try { this.IsBusyIndicatorVisible = true; var selectedUsers = Users.Where(u => u.IsSelected).Select(u => u.User).ToList(); if (selectedUsers.Any()) { string dialogName = null; DialogType dialogType = DialogType.Group; if (selectedUsers.Count == 1) { dialogType = DialogType.Private; dialogName = selectedUsers.First().FullName; } else { var promptResult = await UserDialogs.Instance.PromptAsync("Enter chat name:", null, "Create", "Cancel", "Enter chat name", InputType.Name); if (promptResult.Ok) { dialogName = promptResult.Text; if (string.IsNullOrWhiteSpace(dialogName)) { dialogName = App.UserName + "_" + string.Join(", ", selectedUsers.Select(u => u.FullName)); } } else { this.IsBusyIndicatorVisible = false; this.isCreating = false; return; } } var userIds = selectedUsers.Select(u => u.Id).ToList(); var userIdsString = string.Join(",", userIds); Dialog dialog = null; if (dialogType == DialogType.Group) { dialog = await App.QbProvider.CreateDialogAsync(dialogName.Trim(), userIdsString, dialogType); if (dialog != null) { SaveDialogToDb(dialog); groupManager = App.QbProvider.GetXmppClient() .GetGroupChatManager(dialog.XmppRoomJid, dialog.Id); groupManager.MessageReceived += OnMessageReceived; groupManager.JoinGroup(App.QbProvider.UserId.ToString()); await Task.Delay(1000); groupManager.NotifyAboutGroupCreation(userIds, dialog); return; } } else if (dialogType == DialogType.Private) { dialog = await App.QbProvider.GetDialogAsync(new int[] { App.QbProvider.UserId, userIds.First() }); if (dialog == null) { dialog = await App.QbProvider.CreateDialogAsync(dialogName, userIdsString, dialogType); var privateManager = App.QbProvider.GetXmppClient() .GetPrivateChatManager(selectedUsers.First().Id, dialog.Id); var message = "Hello, I created chat with you!"; privateManager.SendMessage(message); dialog.LastMessage = message; } SaveDialogToDb(dialog); var privateChantPage = new PrivateChatPage(dialog.Id); App.Navigation.InsertPageBefore(privateChantPage, (App.Current.MainPage as NavigationPage).CurrentPage); App.Navigation.PopAsync(); } } else { App.Current.MainPage.DisplayAlert("Error", "Please, select any of users", "Ok"); } this.IsBusyIndicatorVisible = false; } catch (Exception ex) { } this.isCreating = false; }
protected override void OnElementChanged(VisualElementChangedEventArgs e) { base.OnElementChanged(e); page = (PrivateChatPage)e.NewElement; }