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Diffstat (limited to 'Xamarin.Forms.Xaml/XamlNode.cs')
-rw-r--r--Xamarin.Forms.Xaml/XamlNode.cs123
1 files changed, 50 insertions, 73 deletions
diff --git a/Xamarin.Forms.Xaml/XamlNode.cs b/Xamarin.Forms.Xaml/XamlNode.cs
index 752f3845..eccf2075 100644
--- a/Xamarin.Forms.Xaml/XamlNode.cs
+++ b/Xamarin.Forms.Xaml/XamlNode.cs
@@ -1,4 +1,3 @@
-using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
@@ -7,36 +6,30 @@ using Xamarin.Forms.Internals;
namespace Xamarin.Forms.Xaml
{
- internal interface INode
+ interface INode
{
List<string> IgnorablePrefixes { get; set; }
-
IXmlNamespaceResolver NamespaceResolver { get; }
-
INode Parent { get; set; }
void Accept(IXamlNodeVisitor visitor, INode parentNode);
INode Clone();
}
- internal interface IValueNode : INode
+ interface IValueNode : INode
{
}
- internal interface IElementNode : INode, IListNode
+ interface IElementNode : INode, IListNode
{
Dictionary<XmlName, INode> Properties { get; }
-
List<XmlName> SkipProperties { get; }
-
INameScope Namescope { get; }
-
XmlType XmlType { get; }
-
string NamespaceURI { get; }
}
- internal interface IListNode : INode
+ interface IListNode : INode
{
List<INode> CollectionItems { get; }
}
@@ -56,7 +49,7 @@ namespace Xamarin.Forms.Xaml
public IList<XmlType> TypeArguments { get; }
}
- internal abstract class BaseNode : IXmlLineInfo, INode
+ abstract class BaseNode : IXmlLineInfo, INode
{
protected BaseNode(IXmlNamespaceResolver namespaceResolver, int linenumber = -1, int lineposition = -1)
{
@@ -66,27 +59,19 @@ 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 abstract void Accept(IXamlNodeVisitor visitor, INode parentNode);
public abstract INode Clone();
}
[DebuggerDisplay("{Value}")]
- internal class ValueNode : BaseNode, IValueNode
+ class ValueNode : BaseNode, IValueNode
{
public ValueNode(object value, IXmlNamespaceResolver namespaceResolver, int linenumber = -1, int lineposition = -1)
: base(namespaceResolver, linenumber, lineposition)
@@ -101,19 +86,15 @@ namespace Xamarin.Forms.Xaml
visitor.Visit(this, parentNode);
}
- public override INode Clone()
- {
- return new ValueNode(Value, NamespaceResolver, LineNumber, LinePosition) {
- IgnorablePrefixes = IgnorablePrefixes
- };
- }
+ public override INode Clone() => new ValueNode(Value, NamespaceResolver, LineNumber, LinePosition) {
+ IgnorablePrefixes = IgnorablePrefixes
+ };
}
[DebuggerDisplay("{MarkupString}")]
- internal class MarkupNode : BaseNode, IValueNode
+ 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;
@@ -126,15 +107,13 @@ namespace Xamarin.Forms.Xaml
visitor.Visit(this, parentNode);
}
- public override INode Clone()
- {
- return new MarkupNode(MarkupString, NamespaceResolver, LineNumber, LinePosition) {
- IgnorablePrefixes = IgnorablePrefixes
- };
- }
+ public override INode Clone() => new MarkupNode(MarkupString, NamespaceResolver, LineNumber, LinePosition) {
+ IgnorablePrefixes = IgnorablePrefixes
+ };
}
- internal class ElementNode : BaseNode, IValueNode, IElementNode
+ [DebuggerDisplay("{XmlType.Name}")]
+ class ElementNode : BaseNode, IValueNode, IElementNode
{
public ElementNode(XmlType type, string namespaceURI, IXmlNamespaceResolver namespaceResolver, int linenumber = -1,
int lineposition = -1)
@@ -148,48 +127,48 @@ 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 (!visitor.VisitChildrenFirst)
+ if (!SkipVisitNode(visitor, parentNode) && visitor.VisitingMode == TreeVisitingMode.TopDown)
visitor.Visit(this, parentNode);
- if ((!visitor.StopOnDataTemplate || !IsDataTemplate(this, parentNode)) &&
- (!visitor.StopOnResourceDictionary || !IsResourceDictionary(this, parentNode)))
- {
+
+ if (!SkipChildren(visitor, parentNode)) {
foreach (var node in Properties.Values.ToList())
node.Accept(visitor, this);
foreach (var node in CollectionItems)
node.Accept(visitor, this);
}
- if (visitor.VisitChildrenFirst)
+
+ if (!SkipVisitNode(visitor, parentNode) && visitor.VisitingMode == TreeVisitingMode.BottomUp)
visitor.Visit(this, parentNode);
+
}
- internal static bool IsDataTemplate(INode node, INode parentNode)
+ bool IsDataTemplate(INode parentNode)
{
var parentElement = parentNode as IElementNode;
INode createContent;
- if (parentElement != null && parentElement.Properties.TryGetValue(XmlName._CreateContent, out createContent) &&
- createContent == node)
+ if (parentElement != null &&
+ parentElement.Properties.TryGetValue(XmlName._CreateContent, out createContent) &&
+ createContent == this)
return true;
return false;
}
- internal static bool IsResourceDictionary(INode node, INode parentNode)
- {
- var enode = node as ElementNode;
- return enode.XmlType.Name == "ResourceDictionary";
- }
+ 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);
public override INode Clone()
{
@@ -206,7 +185,7 @@ namespace Xamarin.Forms.Xaml
}
}
- internal abstract class RootNode : ElementNode
+ abstract class RootNode : ElementNode
{
protected RootNode(XmlType xmlType, IXmlNamespaceResolver nsResolver) : base(xmlType, xmlType.NamespaceUri, nsResolver)
{
@@ -214,40 +193,39 @@ namespace Xamarin.Forms.Xaml
public override void Accept(IXamlNodeVisitor visitor, INode parentNode)
{
- if (!visitor.VisitChildrenFirst)
+ if (!SkipVisitNode(visitor, parentNode) && visitor.VisitingMode == TreeVisitingMode.TopDown)
visitor.Visit(this, parentNode);
- if ((!visitor.StopOnDataTemplate || !IsDataTemplate(this, parentNode)) &&
- (!visitor.StopOnResourceDictionary || !IsResourceDictionary(this, parentNode)))
- {
+
+ if (!SkipChildren(visitor, parentNode)) {
foreach (var node in Properties.Values.ToList())
node.Accept(visitor, this);
foreach (var node in CollectionItems)
node.Accept(visitor, this);
}
- if (visitor.VisitChildrenFirst)
+
+ if (!SkipVisitNode(visitor, parentNode) && visitor.VisitingMode == TreeVisitingMode.BottomUp)
visitor.Visit(this, parentNode);
}
}
- internal class ListNode : BaseNode, IListNode, IValueNode
+ 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.VisitChildrenFirst)
+ if (visitor.VisitingMode == TreeVisitingMode.TopDown)
visitor.Visit(this, parentNode);
foreach (var node in CollectionItems)
node.Accept(visitor, this);
- if (visitor.VisitChildrenFirst)
+ if (visitor.VisitingMode == TreeVisitingMode.BottomUp)
visitor.Visit(this, parentNode);
}
@@ -262,12 +240,11 @@ namespace Xamarin.Forms.Xaml
}
}
- internal static class INodeExtensions
+ 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 2024-05-19 00:40:35 +0000