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Diffstat (limited to 'Xamarin.Forms.Xaml/XamlNode.cs')
-rw-r--r--Xamarin.Forms.Xaml/XamlNode.cs123
1 files changed, 73 insertions, 50 deletions
diff --git a/Xamarin.Forms.Xaml/XamlNode.cs b/Xamarin.Forms.Xaml/XamlNode.cs
index eccf2075..752f3845 100644
--- a/Xamarin.Forms.Xaml/XamlNode.cs
+++ b/Xamarin.Forms.Xaml/XamlNode.cs
@@ -1,3 +1,4 @@
+using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
@@ -6,30 +7,36 @@ using Xamarin.Forms.Internals;
namespace Xamarin.Forms.Xaml
{
- interface INode
+ internal interface INode
{
List<string> IgnorablePrefixes { get; set; }
+
IXmlNamespaceResolver NamespaceResolver { get; }
+
INode Parent { get; set; }
void Accept(IXamlNodeVisitor visitor, INode parentNode);
INode Clone();
}
- interface IValueNode : INode
+ internal interface IValueNode : INode
{
}
- interface IElementNode : INode, IListNode
+ internal interface IElementNode : INode, IListNode
{
Dictionary<XmlName, INode> Properties { get; }
+
List<XmlName> SkipProperties { get; }
+
INameScope Namescope { get; }
+
XmlType XmlType { get; }
+
string NamespaceURI { get; }
}
- interface IListNode : INode
+ internal interface IListNode : INode
{
List<INode> CollectionItems { get; }
}
@@ -49,7 +56,7 @@ namespace Xamarin.Forms.Xaml
public IList<XmlType> TypeArguments { get; }
}
- abstract class BaseNode : IXmlLineInfo, INode
+ internal abstract class BaseNode : IXmlLineInfo, INode
{
protected BaseNode(IXmlNamespaceResolver namespaceResolver, int linenumber = -1, int lineposition = -1)
{
@@ -59,19 +66,27 @@ namespace Xamarin.Forms.Xaml
}
public IXmlNamespaceResolver NamespaceResolver { get; }
+
+ public abstract void Accept(IXamlNodeVisitor visitor, INode parentNode);
+
public INode Parent { get; set; }
+
public List<string> IgnorablePrefixes { get; set; }
+
+ public bool HasLineInfo()
+ {
+ return LineNumber >= 0 && LinePosition >= 0;
+ }
+
public int LineNumber { get; set; }
- public int LinePosition { get; set; }
- public bool HasLineInfo() => LineNumber >= 0 && LinePosition >= 0;
+ public int LinePosition { get; set; }
- public abstract void Accept(IXamlNodeVisitor visitor, INode parentNode);
public abstract INode Clone();
}
[DebuggerDisplay("{Value}")]
- class ValueNode : BaseNode, IValueNode
+ internal class ValueNode : BaseNode, IValueNode
{
public ValueNode(object value, IXmlNamespaceResolver namespaceResolver, int linenumber = -1, int lineposition = -1)
: base(namespaceResolver, linenumber, lineposition)
@@ -86,15 +101,19 @@ namespace Xamarin.Forms.Xaml
visitor.Visit(this, parentNode);
}
- public override INode Clone() => new ValueNode(Value, NamespaceResolver, LineNumber, LinePosition) {
- IgnorablePrefixes = IgnorablePrefixes
- };
+ public override INode Clone()
+ {
+ return new ValueNode(Value, NamespaceResolver, LineNumber, LinePosition) {
+ IgnorablePrefixes = IgnorablePrefixes
+ };
+ }
}
[DebuggerDisplay("{MarkupString}")]
- class MarkupNode : BaseNode, IValueNode
+ internal class MarkupNode : BaseNode, IValueNode
{
- public MarkupNode(string markupString, IXmlNamespaceResolver namespaceResolver, int linenumber = -1, int lineposition = -1)
+ public MarkupNode(string markupString, IXmlNamespaceResolver namespaceResolver, int linenumber = -1,
+ int lineposition = -1)
: base(namespaceResolver, linenumber, lineposition)
{
MarkupString = markupString;
@@ -107,13 +126,15 @@ namespace Xamarin.Forms.Xaml
visitor.Visit(this, parentNode);
}
- public override INode Clone() => new MarkupNode(MarkupString, NamespaceResolver, LineNumber, LinePosition) {
- IgnorablePrefixes = IgnorablePrefixes
- };
+ public override INode Clone()
+ {
+ return new MarkupNode(MarkupString, NamespaceResolver, LineNumber, LinePosition) {
+ IgnorablePrefixes = IgnorablePrefixes
+ };
+ }
}
- [DebuggerDisplay("{XmlType.Name}")]
- class ElementNode : BaseNode, IValueNode, IElementNode
+ internal class ElementNode : BaseNode, IValueNode, IElementNode
{
public ElementNode(XmlType type, string namespaceURI, IXmlNamespaceResolver namespaceResolver, int linenumber = -1,
int lineposition = -1)
@@ -127,48 +148,48 @@ namespace Xamarin.Forms.Xaml
}
public Dictionary<XmlName, INode> Properties { get; }
+
public List<XmlName> SkipProperties { get; }
+
public List<INode> CollectionItems { get; }
+
public XmlType XmlType { get; }
+
public string NamespaceURI { get; }
+
public INameScope Namescope { get; set; }
public override void Accept(IXamlNodeVisitor visitor, INode parentNode)
{
- if (!SkipVisitNode(visitor, parentNode) && visitor.VisitingMode == TreeVisitingMode.TopDown)
+ if (!visitor.VisitChildrenFirst)
visitor.Visit(this, parentNode);
-
- if (!SkipChildren(visitor, parentNode)) {
+ if ((!visitor.StopOnDataTemplate || !IsDataTemplate(this, parentNode)) &&
+ (!visitor.StopOnResourceDictionary || !IsResourceDictionary(this, parentNode)))
+ {
foreach (var node in Properties.Values.ToList())
node.Accept(visitor, this);
foreach (var node in CollectionItems)
node.Accept(visitor, this);
}
-
- if (!SkipVisitNode(visitor, parentNode) && visitor.VisitingMode == TreeVisitingMode.BottomUp)
+ if (visitor.VisitChildrenFirst)
visitor.Visit(this, parentNode);
-
}
- bool IsDataTemplate(INode parentNode)
+ internal static bool IsDataTemplate(INode node, INode parentNode)
{
var parentElement = parentNode as IElementNode;
INode createContent;
- if (parentElement != null &&
- parentElement.Properties.TryGetValue(XmlName._CreateContent, out createContent) &&
- createContent == this)
+ if (parentElement != null && parentElement.Properties.TryGetValue(XmlName._CreateContent, out createContent) &&
+ createContent == node)
return true;
return false;
}
- bool IsResourceDictionary() => XmlType.Name == "ResourceDictionary";
-
- protected bool SkipChildren(IXamlNodeVisitor visitor, INode parentNode) =>
- (visitor.StopOnDataTemplate && IsDataTemplate(parentNode)) ||
- (visitor.StopOnResourceDictionary && IsResourceDictionary());
-
- protected bool SkipVisitNode(IXamlNodeVisitor visitor, INode parentNode) =>
- !visitor.VisitNodeOnDataTemplate && IsDataTemplate(parentNode);
+ internal static bool IsResourceDictionary(INode node, INode parentNode)
+ {
+ var enode = node as ElementNode;
+ return enode.XmlType.Name == "ResourceDictionary";
+ }
public override INode Clone()
{
@@ -185,7 +206,7 @@ namespace Xamarin.Forms.Xaml
}
}
- abstract class RootNode : ElementNode
+ internal abstract class RootNode : ElementNode
{
protected RootNode(XmlType xmlType, IXmlNamespaceResolver nsResolver) : base(xmlType, xmlType.NamespaceUri, nsResolver)
{
@@ -193,39 +214,40 @@ namespace Xamarin.Forms.Xaml
public override void Accept(IXamlNodeVisitor visitor, INode parentNode)
{
- if (!SkipVisitNode(visitor, parentNode) && visitor.VisitingMode == TreeVisitingMode.TopDown)
+ if (!visitor.VisitChildrenFirst)
visitor.Visit(this, parentNode);
-
- if (!SkipChildren(visitor, parentNode)) {
+ if ((!visitor.StopOnDataTemplate || !IsDataTemplate(this, parentNode)) &&
+ (!visitor.StopOnResourceDictionary || !IsResourceDictionary(this, parentNode)))
+ {
foreach (var node in Properties.Values.ToList())
node.Accept(visitor, this);
foreach (var node in CollectionItems)
node.Accept(visitor, this);
}
-
- if (!SkipVisitNode(visitor, parentNode) && visitor.VisitingMode == TreeVisitingMode.BottomUp)
+ if (visitor.VisitChildrenFirst)
visitor.Visit(this, parentNode);
}
}
- class ListNode : BaseNode, IListNode, IValueNode
+ internal class ListNode : BaseNode, IListNode, IValueNode
{
- public ListNode(IList<INode> nodes, IXmlNamespaceResolver namespaceResolver, int linenumber = -1, int lineposition = -1)
- : base(namespaceResolver, linenumber, lineposition)
+ public ListNode(IList<INode> nodes, IXmlNamespaceResolver namespaceResolver, int linenumber = -1,
+ int lineposition = -1) : base(namespaceResolver, linenumber, lineposition)
{
CollectionItems = nodes.ToList();
}
public XmlName XmlName { get; set; }
+
public List<INode> CollectionItems { get; set; }
public override void Accept(IXamlNodeVisitor visitor, INode parentNode)
{
- if (visitor.VisitingMode == TreeVisitingMode.TopDown)
+ if (!visitor.VisitChildrenFirst)
visitor.Visit(this, parentNode);
foreach (var node in CollectionItems)
node.Accept(visitor, this);
- if (visitor.VisitingMode == TreeVisitingMode.BottomUp)
+ if (visitor.VisitChildrenFirst)
visitor.Visit(this, parentNode);
}
@@ -240,11 +262,12 @@ namespace Xamarin.Forms.Xaml
}
}
- static class INodeExtensions
+ internal static class INodeExtensions
{
public static bool SkipPrefix(this INode node, string prefix)
{
- do {
+ do
+ {
if (node.IgnorablePrefixes != null && node.IgnorablePrefixes.Contains(prefix))
return true;
node = node.Parent;
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-20 14:56:31 +0000