qController/qController.Standard/Pages/qConnectionPage.xaml.cs

using Xamarin.Forms;
using System.Net;
using System;
using Acr.UserDialogs;
using Acr.Settings;
using Zeroconf;
using System.Collections.Generic;
using System.Collections.Specialized;

namespace qController
{
    
    public partial class QConnectionPage : ContentPage
    {
        public QConnectionPage()
        {
            InitializeComponent();
            InitGUI();
            App.rootPage.MenuItemSelected += OnMenuItemSelected;
        }

        private void OnMenuItemSelected(object source, MenuEventArgs args)
        {
            if(args.Command == "scan")
            {
                Scan();
            }
            else if(args.Command == "add")
            {
                AddWorkspace();
            }else if(args.Command == "open_link")
            {
                Device.OpenUri(new Uri("http://www.jwetzell.com"));
            }
        }

        private void InitGUI()
        {
            NavigationPage.SetHasNavigationBar(this, false);
            lstView.ItemsSource = QStorage.qInstances;

            lstView.ItemTemplate = new DataTemplate(typeof(QInstanceCell));
            lstView.SeparatorVisibility = SeparatorVisibility.None;
            lstView.ItemTapped += (object sender, ItemTappedEventArgs e) =>
            {
                // don't do anything if we just de-selected the row
                if (e.Item == null) return;
                // do something with e.SelectedItem
                ((ListView)sender).SelectedItem = null; // de-select the row
            };
            topBar.BackgroundColor = Color.FromHex("71AEFF");

            switch (Device.RuntimePlatform)
            {
                case Device.iOS:
                    topBar.HeightRequest = Math.Max(App.Height * .09, 65);
                    menuButton.Margin = new Thickness(App.WidthUnit * 2, 0, 0, App.WidthUnit * 2);
                    menuButton.FontSize = App.Height * .04;
                    break;
                case Device.Android:
                    topBar.HeightRequest = App.Height * .08;
                    menuButton.Margin = new Thickness(App.WidthUnit * 2, 0, 0, App.WidthUnit * 2);
                    menuButton.FontSize = App.Height * .05;
                    break;
            }

            menuButton.Text = "\uF0C9";

            lstView.BackgroundColor = Color.FromHex("4A4A4A");
            BackgroundColor = Color.FromHex("4A4A4A"); 
            var menuButtonGesture = new TapGestureRecognizer();

            menuButtonGesture.Tapped += showMenu;
            menuButton.GestureRecognizers.Add(menuButtonGesture);

        }

        void AddWorkspace(){
            
            UserDialogs.Instance.Prompt(new PromptConfig
			{
				Title = "Enter IP of QLab Computer",
				Message = "Enter an IP Address to save",
                OkText = "Next",
				OnTextChanged = args =>
				{
                    //IPAddress ugh
                    args.IsValid = IPHelper.IsValidAddress(args.Value);
				},
				OnAction = (qAddress) =>
				{
                    if (!qAddress.Ok)
                        return;

                    UserDialogs.Instance.Prompt(new PromptConfig
                    {
                        Title="Enter Name",
                        Message = "Enter a Name for " + qAddress.Text,
                        OkText="Save",
                        OnAction = (qName) => {
                            if (!qName.Ok)
                                return;
                            QStorage.AddInstance(qName.Text,qAddress.Text);
                            App.showToast("Manual Workspace Added!");
                        }

                    });
				}
			});
        }


        async void Scan(){
            bool workspacesFound = false;
            App.showToast("Scanning for Instances...");
            Console.WriteLine("Begin Scanning");

            IReadOnlyList<IZeroconfHost> results = await ZeroconfResolver.ResolveAsync("_qlab._udp.local.",TimeSpan.FromSeconds(3));
            if(results != null){
                foreach (var result in results)
                {
                    if (result != null)
                    {
                        QInstance instance = new QInstance(result.DisplayName, result.IPAddress);
                        if(QStorage.AddInstance(instance)){
                            Console.WriteLine(result.DisplayName + " @ " + result.IPAddress + " added");
                            workspacesFound = true;
                        }
                    }
                }
            }

            if(workspacesFound){
                App.showToast("Instance Found and Added!");
            }else{
                App.showToast("No New Instances Found!");
            }
        }

        void showMenu(object sender, EventArgs e)
        {
            App.MenuIsPresented = true;
        }

        void showToast(string message)
        {
            var toastConfig = new ToastConfig(message);
            toastConfig.SetDuration(3000);
            toastConfig.SetPosition(ToastPosition.Bottom);
            UserDialogs.Instance.Toast(toastConfig);
        }

    }
}