aurora-sharp-desktop/Aurora/Design/Views/Party/NewPartyDialog/NewPartyDialogViewModel.cs

using System;
using Xamarin.Forms;

namespace Aurora.Design.Views.Party.NewPartyDialog
{
    public class NewPartyDialogViewModel : BaseDialogViewModel
    {
        public NewPartyDialogViewModel()
        {
            this.ReturnObject = new ConnectionDetails();
            HostCommand = new Command(OnHostExecute, OnHostCanExecute);
            JoinCommand = new Command(OnJoinExecute, OnJoinCanCanExecute);
        }

        public string Hostname
        {
            get
            {
                if (ReturnObject is ConnectionDetails)
                {
                    ConnectionDetails obj = ReturnObject as ConnectionDetails;
                    return obj.HostName;
                };
                return string.Empty;
            }
            set
            {
                if (ReturnObject is ConnectionDetails)
                {
                    ConnectionDetails obj = ReturnObject as ConnectionDetails;
                    if (value != obj.HostName)
                    {
                        obj.HostName = value;
                    }

                    OnPropertyChanged(Hostname);
                    HostCommand.ChangeCanExecute();
                    JoinCommand.ChangeCanExecute();
                }
            }
        }


        public void OnHostExecute()
        {
            ConnectionDetails obj = base.ReturnObject as ConnectionDetails;
            obj.ConnectionType = ConnectionType.Host;
            Finish();
        }

        public Command HostCommand { get; private set; }
        public Command JoinCommand { get; private set; }

        public bool OnHostCanExecute()
        {
            return string.IsNullOrWhiteSpace(Hostname);
        }

        public void OnJoinExecute()
        {
            ConnectionDetails obj = base.ReturnObject as ConnectionDetails;
            obj.ConnectionType = ConnectionType.Join;
            Finish();
        }

        public bool OnJoinCanCanExecute()
        {
            return !string.IsNullOrWhiteSpace(Hostname);
        }
    }
}