using BeDesignerSCADA.Common;
using BeDesignerSCADA.Controls;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Markup;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using System.Xml;

namespace BeDesignerSCADA.View
{
    /// <summary>
    /// ChildEditWindow.xaml 的交互逻辑
    /// </summary>
    public partial class ChildEditWindow : Window
    {
        public ChildEditWindow()
        {
            InitializeComponent();
            EditorHelper.Register<BindingExpression, BindingConvertor>();
            Owner = Application.Current.MainWindow;
            Closing += (s, e) => { e.Cancel = true; Hide(); };
        }

        public static ChildEditWindow Instance { get; } = new ChildEditWindow();

        public static string ShowEdit(string xml)
        {
            try
            {
                // 获取所有控件的可用属性
                Instance.main.Child = new MainCanvasPanel("");
                if (!string.IsNullOrEmpty(xml))
                {
                    FrameworkElement element = XamlReader.Parse(xml) as FrameworkElement;
                    if (element != null && element is Canvas)
                    {
                        (Instance.main.Child as MainCanvasPanel).LoadFrameworkElement(((element as Canvas).Children));
                    }
                }
                Instance.ShowDialog();

                if (Instance.IsOk)
                {
                    Canvas grid = new Canvas();
                    List<FrameworkElement> children = new List<FrameworkElement>();
                    foreach (FrameworkElement item in (Instance.main.Child as MainCanvasPanel).cav.Children)
                    {
                        children.Add(item);
                    }

                    double gd = children==null || children.Count<=0?60: children.Max((FrameworkElement x) => Canvas.GetTop(x) + x.ActualHeight);
                    double wd = children == null || children.Count <= 0 ? 100 : children.Max((FrameworkElement x) => Canvas.GetLeft(x) + x.ActualWidth);
                    grid.Width = wd;
                    grid.Height = gd+5;
                    (Instance.main.Child as MainCanvasPanel).GetChildren()?.ForEach(child => {
                        grid.Children.Add(child);
                    });
                    
                    return FrameworkElementToXml(grid);
                }
                else
                {
                    return xml;
                }
            }
            catch (Exception ex)
            {
                return xml;
            }
            
        }

        /// <summary>
        /// 流转Xml
        /// </summary>
        /// <param name="framework"></param>
        public static string FrameworkElementToXml(FrameworkElement framework)
        {
            StringBuilder outstr = new StringBuilder();
            try
            {
                //this code need for right XML fomating 
                XmlWriterSettings settings = new XmlWriterSettings
                {
                    Indent = true,
                    OmitXmlDeclaration = true
                };
                var dsm = new XamlDesignerSerializationManager(XmlWriter.Create(outstr, settings))
                {
                    //this string need for turning on expression saving mode 
                    XamlWriterMode = XamlWriterMode.Expression
                };

                XamlWriter.Save(framework, dsm);
            }
            catch (Exception ex) { }
            return outstr.ToString();
        }

        public bool IsOk { get; set; }
        private void CancelBtn_Click(object sender, RoutedEventArgs e)
        {
            IsOk = false;
            Close();
        }

        private void ConfirmBtn_Click(object sender, RoutedEventArgs e)
        {
            IsOk = true;
            Close();
        }
    }
}