using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;

using System.Reflection;
using System.Threading;
using System.Windows.Threading;
using System.Globalization;

namespace GummingCommon
{
    /// <summary>
    /// This class is common message box dialog 
    /// </summary>
    public partial class MessageBoxServiceView : BaseDialog
    {
        /// <summary>
        /// Initialize for this Class
        /// </summary>
        public MessageBoxServiceView()
        {
            InitializeComponent();
        }

        private void MessageBoxServiceView_Loaded(object sender, RoutedEventArgs e)
        {
            try
            {
                double heightOffset = this.ActualHeight - TextBoxBorder.ActualHeight;
                double widthOffset = this.ActualWidth - TextBoxBorder.ActualWidth;

                //Find the ideal width (using the longest word)
                string longestString = txtMessage.Text.Split(' ', '\n').OrderByDescending(s => s.Length).FirstOrDefault();

                double idealWidth;
                if (!string.IsNullOrWhiteSpace(longestString))
                {
                    idealWidth = MeasureString(txtMessage, longestString).Width + widthOffset + txtMessage.Padding.Left + txtMessage.Padding.Right + txtMessage.Margin.Left + txtMessage.Margin.Right + 15; //Add a little just in case
                }
                else
                    idealWidth = this.MinWidth;

                idealWidth = ClipLength(idealWidth, this.MinWidth, this.MaxWidth);

                //Measure the desire height using the ideal width
                txtMessage.Measure(new Size(idealWidth - widthOffset, double.MaxValue));
                double idealHeight = txtMessage.DesiredSize.Height + heightOffset + 15 + txtMessage.Padding.Top + txtMessage.Padding.Bottom + txtMessage.Margin.Top + txtMessage.Margin.Bottom; //Add a little just in case;

                //If vertical scrollbar is going to be shown, then remeasure with scrollbar width
                if (idealHeight > this.MaxHeight)
                {
                    idealWidth = ClipLength(idealWidth + SystemParameters.VerticalScrollBarWidth + 2, this.MinWidth, this.MaxWidth);
                    txtMessage.Measure(new Size(idealWidth - widthOffset, double.MaxValue));
                    idealHeight = txtMessage.DesiredSize.Height + heightOffset + 5;
                }

                double width = ClipLength(idealWidth, this.MinWidth, this.MaxWidth); ;
                double height = ClipLength(idealHeight, this.MinHeight, this.MaxHeight);

                //recalculate the window's top/left
                this.Left -= (width - this.ActualWidth) / 2;
                this.Top -= (height - this.ActualHeight) / 2;

                this.Width = width;
                this.Height = height;
            }
            catch 
            {
                //Ignore exception since it is just purely cosmetic
            }
        }

        private static double ClipLength(double value, double min, double max)
        {
            value = Math.Max(value, min);
            value = Math.Min(value, max);
            return value;
        }
   
        private static Size MeasureString(TextBox tb, string s)
        {
            FormattedText formattedText = new FormattedText(
                s,
                //new string('O', s.Length),
                CultureInfo.CurrentUICulture,
                FlowDirection.LeftToRight,
                new Typeface(tb.FontFamily, tb.FontStyle, tb.FontWeight, tb.FontStretch),
                tb.FontSize,
                Brushes.Black) { MaxLineCount = 1, Trimming = TextTrimming.None } ;
            return new Size(formattedText.Width, formattedText.Height);
        }

        /// <summary>
        /// for to resolve the problem : How to open same window after it has closed?
        /// </summary>
        /// <param name="e"></param>
        protected override void OnClosing(System.ComponentModel.CancelEventArgs e)
        {
            base.OnClosing(e);
            //if (CanMuchOpened)
            {
                typeof(Window).GetField("_isClosing", BindingFlags.Instance | BindingFlags.NonPublic).SetValue(this, false);
                e.Cancel = true;
                Hide();
            }
        }
    }
}