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

   1 using System;
   2 using System.Xml;
   3 using Tizen.NUI.StyleSheets;
   4 using System.Reflection;
   5 using System.IO;
   6 using Tizen.NUI.Binding;
   7
   8 namespace Tizen.NUI.Xaml
   9 {
  10     [ContentProperty(nameof(Style))]
  11     [ProvideCompiled("Tizen.NUI.Core.XamlC.StyleSheetProvider")]
  12     internal sealed class StyleSheetExtension : IValueProvider
  13     {
  14         public string Style { get; set; }
  15         public Uri Source { get; set; }
  16
  17         object IValueProvider.ProvideValue(IServiceProvider serviceProvider)
  18         {
  19             IXmlLineInfo lineInfo;
  20
  21             if (!string.IsNullOrEmpty(Style) && Source != null) {
  22                 lineInfo = (serviceProvider.GetService(typeof(IXmlLineInfoProvider)) as IXmlLineInfoProvider)?.XmlLineInfo;
  23                 throw new XamlParseException($"StyleSheet can not have both a Source and a content", lineInfo);
  24             }
  25
  26             if (Source != null) {
  27                 lineInfo = (serviceProvider.GetService(typeof(IXmlLineInfoProvider)) as IXmlLineInfoProvider)?.XmlLineInfo;
  28                 if (Source.IsAbsoluteUri)
  29                     throw new XamlParseException($"Source only accepts Relative URIs", lineInfo);
  30
  31                 var rootObjectType = (serviceProvider.GetService(typeof(IRootObjectProvider)) as IRootObjectProvider)?.RootObject.GetType();
  32                 if (rootObjectType == null)
  33                     return null;
  34                 var rootTargetPath = XamlResourceIdAttribute.GetPathForType(rootObjectType);
  35                 var resourcePath = ResourceDictionary.RDSourceTypeConverter.GetResourcePath(Source, rootTargetPath);
  36                 var resString = DependencyService.Get<IResourcesLoader>()?.GetResource(resourcePath, rootObjectType.GetTypeInfo().Assembly, lineInfo);
  37                 return StyleSheet.FromString(resString);
  38             }
  39
  40             if (!string.IsNullOrEmpty(Style)) {
  41                 using (var reader = new StringReader(Style))
  42                     return StyleSheet.FromReader(reader);
  43             }
  44
  45             lineInfo = (serviceProvider.GetService(typeof(IXmlLineInfoProvider)) as IXmlLineInfoProvider)?.XmlLineInfo;
  46             throw new XamlParseException($"StyleSheet require either a Source or a content", lineInfo);
  47         }
  48     }
  49 }