async void OnItemTapped(object sender, ItemTappedEventArgs e)
{
if (e.Item == null)
{
return;
}
ServerDisplay server = e.Item as ServerDisplay;
var action = await DisplayActionSheet("Edit Server", "Cancel", "Delete", "Edit");
if (action.Equals("Delete"))
{
var reassure = await DisplayAlert("Warning", "Are you sure you want to delete server: \n" + server.ToString(), "Yes", "No");
if (reassure)
{
ServerList.Remove(server);
SaveServers(ServerList);
}
}
else if (action.Equals("Edit"))
{
var popup = new ServerPopupPage(server.host, server.port);
await PopupNavigation.PushAsync(popup);
}
((ListView)sender).SelectedItem = null;
return;
}
public override bool Equals(System.Object obj)
{
if (obj == null)
{
return(false);
}
ServerDisplay otherServer = obj as ServerDisplay;
if (otherServer.DisplayName.Equals(this.DisplayName))
{
return(true);
}
return(false);
}
async void Yes_Clicked(object sender, EventArgs args)
{
if (ServerHost.Text == "" || ServerPort.Text == "")
{
await DisplayAlert("Error", "Input cannot be empty", "OK");
return;
}
else
{
ServerDisplay server;
try
{
server = new ServerDisplay(ServerHost.Text, int.Parse(ServerPort.Text));
if (server.port < 0 || server.port > 65535)
{
throw new FormatException();
}
}
catch (FormatException e)
{
await DisplayAlert("Error", "Invalid port:\nPort can only be number from 0-65535.", "OK");
return;
}
catch (OverflowException e)
{
await DisplayAlert("Error", "Invalid port:\nPort can only be number from 0-65535.", "OK");
return;
}
catch (Exception e)
{
await DisplayAlert("Fatal", "Invalid Server", "OK");
return;
}
try
{
TcpClient client = new TcpClient();
var result = client.BeginConnect(server.host, server.port, null, null);
var success = result.AsyncWaitHandle.WaitOne(TimeSpan.FromSeconds(1));
if (!success)
{
throw new Exception("Failed to connect");
}
}
catch (Exception e)
{
await DisplayAlert("Fatal", "Invalid Server", "OK");
return;
}
if (SettingsPage.ServerList.Contains(server))
{
await DisplayAlert("Alert", "You have added this server", "OK");
}
else
{
SettingsPage.ServerList.Add(server);
SettingsPage.ServerList.Remove(oldServer);
if (Application.Current.Properties.ContainsKey("Servers"))
{
Application.Current.Properties["Servers"] = SettingsPage.ServerList;
}
else
{
Application.Current.Properties.Add("Servers", SettingsPage.ServerList);
}
SaveServers(SettingsPage.ServerList);
await PopupNavigation.PopAsync();
return;
}
}
}
public ServerPopupPage(string host, int port)
{
oldServer = new ServerDisplay(host, port);
ServerHost = new Entry
{
Text = host
};
ServerHost.HorizontalOptions = LayoutOptions.FillAndExpand;
ServerPort = new Entry
{
Text = port.ToString()
};
ServerPort.HorizontalOptions = LayoutOptions.FillAndExpand;
Button yes = new Button
{
Text = "Yes",
HeightRequest = 3,
};
yes.Clicked += Yes_Clicked;
Button no = new Button
{
Text = "No"
};
no.Clicked += No_Clicked;
BackgroundColor = new Color(0, 0, 0, 0.4);
Content = new StackLayout
{
Padding = 10,
BackgroundColor = Color.White,
HorizontalOptions = LayoutOptions.CenterAndExpand,
Spacing = 5,
VerticalOptions = LayoutOptions.CenterAndExpand,
Children =
{
new StackLayout
{
Orientation = StackOrientation.Horizontal,
Children =
{
new Label {
Text = "Host",
},
ServerHost,
}
},
new StackLayout
{
Orientation = StackOrientation.Horizontal,
Children =
{
new Label {
Text = "Port",
},
ServerPort,
}
},
new StackLayout
{
Orientation = StackOrientation.Horizontal,
HorizontalOptions = LayoutOptions.CenterAndExpand,
Children =
{
yes,
no,
}
},
}
};
}
