BPASmartClient/BPASmartClient.SCADAControl/CustomerControls/TheListBox.xaml.cs

using BPASmartClient.Compiler;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Markup;
using System.Windows.Threading;
using System.Xml;

namespace BPASmartClient.SCADAControl.CustomerControls
{
    /// <summary>
    /// TheListBox.xaml 的交互逻辑
    /// </summary>
    public partial class TheListBox :ListBox, IExecutable, IDisposable
    {
        public event EventHandler PropertyChange;  //声明一个事件

        public TheListBox()
        {
            InitializeComponent();
            ResourceDictionary languageResDic = new ResourceDictionary();
            languageResDic.Source = new Uri(@"/BPASmartClient.SCADAControl;component/Themes/Generic.xaml",UriKind.RelativeOrAbsolute);
            this.Resources.MergedDictionaries.Add(languageResDic);
            EditorHelper.Register<BindingExpression, BindingConvertor>();
            Width = 100;
            Height = 100;
        }

        #region 属性
        [Category("控件数据集合")]
        private ObservableCollection<object> ItemsString
        {
            get { return (ObservableCollection<object>)GetValue(ItemsStringProperty); }
            set { SetValue(ItemsStringProperty, value); }
        }
        private static readonly DependencyProperty ItemsStringProperty =
                        DependencyProperty.Register("ItemsString", typeof(ObservableCollection<object>), typeof(TheListBox), new PropertyMetadata(new ObservableCollection<object>()));

        [Category("子控件模板XML格式")]
        public string ChildTemplateXml
        {
            get { return (string)GetValue(ChildTemplateXmlProperty); }
            set { SetValue(ChildTemplateXmlProperty, value); }
        }
        public static readonly DependencyProperty ChildTemplateXmlProperty =
                        DependencyProperty.Register("ChildTemplateXml", typeof(string), typeof(TheListBox), new PropertyMetadata(string.Empty,new PropertyChangedCallback(onChildTemplateXmlChanged)));
        private static void onChildTemplateXmlChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) => (d as TheListBox)?.XmlRefresh();
        public void XmlRefresh()
        {
            ;
        }


        [Category("数据绑定-数据来源")]
        public DataTypeEnum DataSouceType
        {
            get { return (DataTypeEnum)GetValue(DataSouceTypeProperty); }
            set { SetValue(DataSouceTypeProperty, value); }
        }
        public static readonly DependencyProperty DataSouceTypeProperty =
            DependencyProperty.Register("DataSouceType", typeof(DataTypeEnum), typeof(TheListBox), new PropertyMetadata(DataTypeEnum.API接口));
        [Category("数据绑定-数据来源")]
        public int TimeCount
        {
            get { return (int)GetValue(TimeCountProperty); }
            set { SetValue(TimeCountProperty, value); }
        }
        public static readonly DependencyProperty TimeCountProperty =
            DependencyProperty.Register("TimeCount", typeof(int), typeof(TheListBox), new PropertyMetadata(500));
        [Category("数据绑定-数据来源")]
        public string DataSouceInformation
        {
            get { return (string)GetValue(DataSouceInformationProperty); }
            set { SetValue(DataSouceInformationProperty, value); }
        }
        public static readonly DependencyProperty DataSouceInformationProperty =
            DependencyProperty.Register("DataSouceInformation", typeof(string), typeof(TheListBox), new PropertyMetadata("api0"));
        [Category("数据绑定")]
        public string FDataSouce
        {
            get { return (string)GetValue(FDataSouceProperty); }
            set { SetValue(FDataSouceProperty, value); }
        }
        public static readonly DependencyProperty FDataSouceProperty =
                        DependencyProperty.Register("FDataSouce", typeof(string), typeof(TheListBox), new PropertyMetadata(string.Empty, new PropertyChangedCallback(onFDataSouceChanged)));
        private static void onFDataSouceChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) => (d as TheListBox)?.DataSouceRefresh();
        public void DataSouceRefresh()
        {
            try
            {
                GenerateData = (string)CSharpConfig.GetInstance().RunCSharp(Code, new object[] { FDataSouce });
                if (PropertyChange != null)
                {
                    PropertyChange(this, null);
                }
            }
            catch (Exception ex)
            {

            }
        }
        public static string _code = "public string main(string message) \n{ \n  //请在此填写你的代码\n\n  return message; \n}\n";
        [Category("数据绑定")]
        public string Code
        {
            get { return (string)GetValue(CodeProperty); }
            set { SetValue(CodeProperty, value); }
        }
        public static readonly DependencyProperty CodeProperty =
            DependencyProperty.Register("Code", typeof(string), typeof(TheListBox), new PropertyMetadata(_code));
        [Category("数据绑定")]
        public string GenerateData
        {
            get { return (string)GetValue(GenerateDataProperty); }
            set { SetValue(GenerateDataProperty, value); }
        }
        public static readonly DependencyProperty GenerateDataProperty =
            DependencyProperty.Register("GenerateData", typeof(string), typeof(TheListBox), new PropertyMetadata(string.Empty, new PropertyChangedCallback(onGenerateDataChanged)));
        private static void onGenerateDataChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) => (d as TheListBox)?.GenerateDataRefresh();
        public void GenerateDataRefresh()
        {
            if (!string.IsNullOrEmpty(GenerateData) && GenerateData.Contains("data"))
            {
                try
                {
                    Dictionary<string, object> keys = JsonConvert.DeserializeObject<Dictionary<string, object>>(GenerateData);
                    ItemsString = JsonConvert.DeserializeObject<ObservableCollection<object>>(keys["data"].ToString());
                }
                catch (Exception ex)
                {

                }
            }
            else
            {
                //this.Items.Clear();
            }

        }
        #endregion

        public string ControlType => "控件";

        private bool isExecuteState;
        public bool IsExecuteState
        {
            get { return isExecuteState; }
            set
            {
                isExecuteState = value;
                if (IsExecuteState)
                {
                    Register();
                }
            }
        }

        DispatcherTimer timer = new DispatcherTimer();
        /// <summary>
        /// 注册需要处理的事件
        /// </summary>
        public void Register()
        {
            XmlToFrameworkElement();

            if (DataSouceType == DataTypeEnum.API接口)
            {
                timer.Interval = TimeSpan.FromMilliseconds(TimeCount);
                timer.Tick += Timer_Tick; ;
                timer.Start();
            }
        }

        /// <summary>
        /// 流转Xml
        /// </summary>
        /// <param name="framework"></param>
        public void 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) { }
            ChildTemplateXml = outstr.ToString();
        }

        public void XmlToFrameworkElement()
        {
            var template = (DataTemplate)XamlReader.Parse(@"
        <DataTemplate xmlns=""http://schemas.microsoft.com/winfx/2006/xaml/presentation""
                    xmlns:x=""http://schemas.microsoft.com/winfx/2006/xaml"">
        		" + ChildTemplateXml + @"
</DataTemplate>");
            SetValue(ItemTemplateProperty, template);

            Binding binding = new Binding();
            binding.RelativeSource = new RelativeSource() { Mode = RelativeSourceMode.Self };
            binding.Path = new PropertyPath("ItemsString");
            SetBinding(ItemsSourceProperty, binding);
        }

        public void Dispose()
        {
            timer.Stop();
            FDataSouce = "";
            GenerateDataRefresh();
        }

        private void Timer_Tick(object? sender, EventArgs e)
        {
            if (!string.IsNullOrEmpty(DataSouceInformation))
            {
                if (DataSouceType == DataTypeEnum.API接口)
                {
                    if (Class_DataBus.GetInstance().Dic_APIData.ContainsKey(DataSouceInformation))
                    {
                        FDataSouce = Class_DataBus.GetInstance().Dic_APIData[DataSouceInformation];
                    }
                }
                else if (DataSouceType == DataTypeEnum.Redis)
                {
                    if (DataSouceInformation.Contains(".") && DataSouceInformation.Contains("{Binding "))
                    {
                        string[] str = DataSouceInformation.Replace("{Binding ", "").Replace("}", "").Split(".");
                        if (str.Length > 1)
                        {
                            if (Class_DataBus.GetInstance().Dic_RedisData.ContainsKey(str[0]))
                            {
                                Dictionary<string, object> b = Class_DataBus.GetInstance().Dic_RedisData[str[0]];
                                if (b != null && b.ContainsKey(str[1]))
                                    FDataSouce = b[str[1]].ToString();
                            }
                        }
                    }
                }
                else if (DataSouceType == DataTypeEnum.静态数据)
                {
                    FDataSouce = "";
                }
            }
        }

    }

    internal class BindingConvertor : ExpressionConverter
    {
        public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
        {
            if (destinationType == typeof(MarkupExtension))
                return true;
            else return false;
        }
        public override object ConvertTo(ITypeDescriptorContext context,
                                        System.Globalization.CultureInfo culture, object value, Type destinationType)
        {
            if (destinationType == typeof(MarkupExtension))
            {
                BindingExpression bindingExpression = value as BindingExpression;
                if (bindingExpression == null)
                    throw new Exception();
                return bindingExpression.ParentBinding;
            }

            return base.ConvertTo(context, culture, value, destinationType);
        }
    }

    internal static class EditorHelper
    {
        public static void Register<T, TC>()
        {
            Attribute[] attr = new Attribute[1];
            TypeConverterAttribute vConv = new TypeConverterAttribute(typeof(TC));
            attr[0] = vConv;
            TypeDescriptor.AddAttributes(typeof(T), attr);
        }
    }
}