prs/prs.mobile/comal.timesheets/CustomControls/Pages/Selection Screens/EmployeeSelectionPage.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using InABox.Core;
using Comal.Classes;
using InABox.Clients;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;

namespace comal.timesheets.CustomControls
{


    [XamlCompilation(XamlCompilationOptions.Compile)]

    public partial class EmployeeSelectionPage : ContentPage
    {
        public event ItemSelectedEvent OnItemSelected;
        public EmployeeShell employee { get; set; }

        string currentButton = "";
        public List<EmployeeGroupDisplayList> employeeGroupDisplayLists { get; set; }
        bool Multiselect = false;
        List<EmployeeShell> selectedList = new List<EmployeeShell>();
        public EmployeeSelectionPage(bool multiselect = false)
        {
            InitializeComponent();
            NavigationPage.SetHasBackButton(this, false);

            employeeGroupDisplayLists = new List<EmployeeGroupDisplayList>();

            foreach (EmployeeShell employee in GlobalVariables.EmployeeShells)
            {
                char c = employee.Name.FirstOrDefault();
                var group = employeeGroupDisplayLists.Find(x => x.Heading.Equals(c.ToString()));
                if (group == null)
                {
                    EmployeeGroupDisplayList newGroupList = new EmployeeGroupDisplayList() { Heading = c.ToString() };
                    newGroupList.Add(employee);
                    employeeGroupDisplayLists.Add(newGroupList);
                }
                else
                {
                    employeeGroupDisplayLists.Remove(group);
                    group.Add(employee);
                    employeeGroupDisplayLists.Add(group);
                }
            }
            currentButton = "All Staff";
            employeeListView.ItemsSource = employeeGroupDisplayLists;

            searchEdt.IsEnabled = true;

            List<string> options = new List<string>();
            foreach (string s in GlobalVariables.TeamNames)
            {
                options.Add(s);
            }
            filterOptionsControl.Options = options;
            filterOptionsControl.CreateRadioButtonsAndSetDefault("All Staff");
            filterOptionsControl.OnFilterOptionChanged += FilterOptionsControl_OnFilterOptionChanged;
        }

        private void Exit(object sender, EventArgs e)
        {
            Navigation.PopAsync();
        }

        private void FilterOptionsControl_OnFilterOptionChanged(string filterOption)
        {
            if (filterOption == filterOptionsControl.CurrentOption)
                return;
            if (filterOption.Equals("All Staff"))
            {
                employeeListView.IsGroupingEnabled = true;
                employeeListView.ItemsSource = employeeGroupDisplayLists;
            }
            else
            {
                employeeListView.IsGroupingEnabled = false;
                employeeListView.ItemsSource = GlobalVariables.TeamEmployeeShells.Where(x => x.TeamName == filterOption);
            }
            currentButton = filterOption;
            filterOptionsControl.CurrentOption = filterOption;
        }

        private void SearchEdt_Changed(object sender, EventArgs e)
        {
            if (string.IsNullOrWhiteSpace(searchEdt.Text))
            {
                if (currentButton.Equals("All Staff"))
                {
                    employeeListView.IsGroupingEnabled = true;
                    employeeListView.ItemsSource = employeeGroupDisplayLists;
                }
                else
                    employeeListView.ItemsSource = GlobalVariables.TeamEmployeeShells.Where(x => x.TeamName == currentButton);
            }
            else
            {
                employeeListView.IsGroupingEnabled = false;
                employeeListView.ItemsSource = GlobalVariables.EmployeeShells.Where
                    (
                    x => x.Name.Contains(searchEdt.Text) || x.Name.Contains(UpperCaseFirst(searchEdt.Text))
                    || x.Name.Contains(searchEdt.Text.ToUpper()) || x.Name.Contains(searchEdt.Text.ToLower())
                    );
            }
        }

        static String UpperCaseFirst(string s)
        {
            char[] a = s.ToCharArray();
            a[0] = char.ToUpper(a[0]);
            return new string(a);
        }

        private void Employee_Clicked(object sender, EventArgs e)
        {
            employee = employeeListView.SelectedItem as EmployeeShell;
            OnItemSelected?.Invoke();
            Navigation.PopAsync();
        }
    }

    public class EmployeeGroupDisplayList : List<EmployeeShell>
    {
        public string Heading { get; set; }
        public List<EmployeeShell> employeeShells;
    }

    public delegate void ItemSelectedEvent();


}