using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;

namespace WGneu {
    public partial class App : Application {

        public static bool IsPrintingReady => Documents.Html.IsReady && Documents.Pdf.IsReady;

        public App() : base() {
            System.Text.Encoding.RegisterProvider(System.Text.CodePagesEncodingProvider.Instance);
        }

        public void App_Startup(object sender, EventArgs e) {
            Task.Run(() => Documents.Html.Init(PrintingReadyChanged));
            Task.Run(() => Documents.Pdf.Init(PrintingReadyChanged));
        }

        private void PrintingReadyChanged() {
            Dispatcher.BeginInvoke(App_PrintingReadyChanged, this, new EventArgs());
        }

        private void App_PrintingReadyChanged(object sender, EventArgs e) {
            foreach (Window w in Windows) {
                foreach (var b in Utils.FindVisualChilds<Button>(w).Where(b => "Print".Equals(b.Tag))) {
                    b.IsEnabled = IsPrintingReady;
                }
            }
        }
    }
}