src/Tizen.NUI/src/internal/Xaml/MarkupExtensions/StaticExtension.cs

   1 using System;
   2 using System.Linq;
   3 using System.Reflection;
   4 using System.Xml;
   5 using Tizen.NUI.Binding;
   6
   7 namespace Tizen.NUI.Xaml
   8 {
   9         [ContentProperty(nameof(Member))]
  10         // [ProvideCompiled("Tizen.NUI.Build.Tasks.StaticExtension")]
  11         internal class StaticExtension : IMarkupExtension
  12         {
  13                 public string Member { get; set; }
  14
  15                 public object ProvideValue(IServiceProvider serviceProvider)
  16                 {
  17                         IXmlLineInfoProvider lineInfoProvider;
  18                         IXmlLineInfo lineInfo;
  19
  20                         if (serviceProvider == null)
  21                                 throw new ArgumentNullException(nameof(serviceProvider));
  22                         var typeResolver = serviceProvider.GetService(typeof (IXamlTypeResolver)) as IXamlTypeResolver;
  23                         if (typeResolver == null)
  24                                 throw new ArgumentException("No IXamlTypeResolver in IServiceProvider");
  25
  26                         if (string.IsNullOrEmpty(Member) || !Member.Contains("."))
  27                         {
  28                                 lineInfoProvider = serviceProvider.GetService(typeof (IXmlLineInfoProvider)) as IXmlLineInfoProvider;
  29                                 lineInfo = (lineInfoProvider != null) ? lineInfoProvider.XmlLineInfo : new XmlLineInfo();
  30                                 throw new XamlParseException("Syntax for x:Static is [Member=][prefix:]typeName.staticMemberName", lineInfo);
  31                         }
  32
  33                         var dotIdx = Member.LastIndexOf('.');
  34                         var typename = Member.Substring(0, dotIdx);
  35                         var membername = Member.Substring(dotIdx + 1);
  36
  37                         var type = typeResolver.Resolve(typename, serviceProvider);
  38
  39                         var pinfo = type.GetRuntimeProperties().FirstOrDefault(pi => pi.Name == membername && pi.GetMethod.IsStatic);
  40                         if (pinfo != null)
  41                                 return pinfo.GetMethod.Invoke(null, new object[] { });
  42
  43                         var finfo = type.GetRuntimeFields().FirstOrDefault(fi => fi.Name == membername && fi.IsStatic);
  44                         if (finfo != null)
  45                                 return finfo.GetValue(null);
  46
  47                         lineInfoProvider = serviceProvider.GetService(typeof (IXmlLineInfoProvider)) as IXmlLineInfoProvider;
  48                         lineInfo = (lineInfoProvider != null) ? lineInfoProvider.XmlLineInfo : new XmlLineInfo();
  49                         throw new XamlParseException($"No static member found for {Member}", lineInfo);
  50                 }
  51         }
  52 }