src/Tizen.NUI/src/internal/Xaml/FillResourceDictionariesVisitor.cs

   1 using System;
   2 using System.Collections;
   3 using System.Collections.Generic;
   4 using System.Reflection;
   5 using Tizen.NUI.Binding;
   6
   7 namespace Tizen.NUI.Xaml
   8 {
   9     internal class FillResourceDictionariesVisitor : IXamlNodeVisitor
  10     {
  11         public FillResourceDictionariesVisitor(HydrationContext context)
  12         {
  13             Context = context;
  14         }
  15
  16         HydrationContext Context { get; }
  17         Dictionary<INode, object> Values => Context.Values;
  18
  19         public TreeVisitingMode VisitingMode => TreeVisitingMode.TopDown;
  20         public bool StopOnDataTemplate => true;
  21         public bool StopOnResourceDictionary => false;
  22         public bool VisitNodeOnDataTemplate => false;
  23
  24         public bool IsResourceDictionary(ElementNode node) => typeof(ResourceDictionary).IsAssignableFrom(Context.Types[node]);
  25
  26         public void Visit(ValueNode node, INode parentNode)
  27         {
  28             if (!typeof(ResourceDictionary).IsAssignableFrom(Context.Types[((IElementNode)parentNode)]))
  29                 return;
  30
  31             node.Accept(new ApplyPropertiesVisitor(Context, stopOnResourceDictionary: false), parentNode);
  32         }
  33
  34         public void Visit(MarkupNode node, INode parentNode)
  35         {
  36         }
  37
  38         public void Visit(ElementNode node, INode parentNode)
  39         {
  40             var value = Values[node];
  41             XmlName propertyName;
  42             //Set RD to VE
  43             if (typeof(ResourceDictionary).IsAssignableFrom(Context.Types[node]) && ApplyPropertiesVisitor.TryGetPropertyName(node, parentNode, out propertyName))
  44             {
  45                 if ((propertyName.LocalName == "Resources" ||
  46                      propertyName.LocalName.EndsWith(".Resources", StringComparison.Ordinal)) && value is ResourceDictionary)
  47                 {
  48                     var source = Values[parentNode];
  49                     ApplyPropertiesVisitor.SetPropertyValue(source, propertyName, value, Context.RootElement, node, Context, node);
  50                     return;
  51                 }
  52             }
  53
  54             //Only proceed further if the node is a keyless RD
  55             if (parentNode is IElementNode
  56                 && typeof(ResourceDictionary).IsAssignableFrom(Context.Types[((IElementNode)parentNode)])
  57                 && !((IElementNode)parentNode).Properties.ContainsKey(XmlName.xKey))
  58                 node.Accept(new ApplyPropertiesVisitor(Context, stopOnResourceDictionary: false), parentNode);
  59             else if (parentNode is ListNode
  60                      && typeof(ResourceDictionary).IsAssignableFrom(Context.Types[((IElementNode)parentNode.Parent)])
  61                      && !((IElementNode)parentNode.Parent).Properties.ContainsKey(XmlName.xKey))
  62                 node.Accept(new ApplyPropertiesVisitor(Context, stopOnResourceDictionary: false), parentNode);
  63         }
  64
  65         public void Visit(RootNode node, INode parentNode)
  66         {
  67         }
  68
  69         public void Visit(ListNode node, INode parentNode)
  70         {
  71         }
  72
  73         public bool SkipChildren(INode node, INode parentNode)
  74         {
  75             var enode = node as ElementNode;
  76             if (enode is null)
  77                 return false;
  78             if (parentNode is IElementNode
  79                 && typeof(ResourceDictionary).IsAssignableFrom(Context.Types[((IElementNode)parentNode)])
  80                 && !((IElementNode)parentNode).Properties.ContainsKey(XmlName.xKey))
  81                 return true;
  82             if (parentNode is ListNode
  83                 && typeof(ResourceDictionary).IsAssignableFrom(Context.Types[((IElementNode)parentNode.Parent)])
  84                 && !((IElementNode)parentNode.Parent).Properties.ContainsKey(XmlName.xKey))
  85                 return true;
  86             return false;
  87         }
  88     }
  89 }