internal FreeTextNode( IHtmlFragment fragment, IHtmlNodeFactory factory )
: base( fragment, factory )
{
TextNode = Node as IHtmlTextNode;
if ( TextNode == null )
throw new InvalidOperationException();
}
public FreeComment( IHtmlFragment fragment, HtmlNodeFactory factory )
: base( fragment, factory )
{
Comment = Node as IHtmlComment;
if ( Comment == null )
throw new InvalidOperationException();
}
internal FreeElement( IHtmlFragment fragment, IHtmlNodeFactory factory )
: base( fragment, factory )
{
Element = Node as IHtmlElement;
if ( Element == null )
throw new InvalidOperationException();
}
/// <summary>
/// 尝试使用指定的 HTML 碎片替换此节点
/// </summary>
/// <param name="node">要被替换的节点</param>
/// <param name="fragment">替换节点的 HTML 碎片</param>
/// <returns>碎片置入后产生的节点集</returns>
/// <exception cref="System.InvalidOperationException">若节点和碎片不在同一文档</exception>
public static IEnumerable <IHtmlNode> ReplaceWith(this IHtmlNode node, IHtmlFragment fragment)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
if (fragment == null)
{
throw new ArgumentNullException("fragment");
}
if (!object.Equals(fragment.Document, node.Document))
{
throw new InvalidOperationException();
}
var container = node.Container;
lock ( container )
{
int index = node.NodesIndexOfSelf();
Remove(node);
return(fragment.Into(container, index));
}
}
internal FreeTextNode(IHtmlFragment fragment, IHtmlNodeFactory factory)
: base(fragment, factory)
{
TextNode = Node as IHtmlTextNode;
if (TextNode == null)
{
throw new InvalidOperationException();
}
}
public FreeComment(IHtmlFragment fragment, HtmlNodeFactory factory)
: base(fragment, factory)
{
Comment = Node as IHtmlComment;
if (Comment == null)
{
throw new InvalidOperationException();
}
}
internal FreeElement(IHtmlFragment fragment, IHtmlNodeFactory factory)
: base(fragment, factory)
{
Element = Node as IHtmlElement;
if (Element == null)
{
throw new InvalidOperationException();
}
}
/// <summary>
/// 创建碎片的副本
/// </summary>
/// <param name="fragment">要创建副本的碎片</param>
/// <returns>碎片的副本</returns>
public static IHtmlFragment MakeCopy(this IHtmlFragment fragment)
{
if (fragment == null)
{
throw new ArgumentNullException("fragment");
}
var _fragment = fragment.Document.CreateFragment();
foreach (var node in fragment.Nodes())
{
_fragment.AddCopy(node);
}
return(_fragment);
}
/// <summary>
/// 在自己前面添加一个文档碎片
/// </summary>
/// <param name="node">要在其前面添加碎片的节点</param>
/// <param name="fragment">要添加 HTML 碎片</param>
/// <returns>添加后的节点集</returns>
public static IEnumerable<IHtmlNode> AddFragmentBeforeSelf( this IHtmlNode node, IHtmlFragment fragment )
{
if ( node == null )
throw new ArgumentNullException( "node" );
if ( fragment == null )
throw new ArgumentNullException( "fragment" );
var container = node.Container;
if ( container == null )
throw new InvalidOperationException();
lock ( container.SyncRoot )
{
return container.AddFragment( node.NodesIndexOfSelf(), fragment );
}
}
/// <summary>
/// 将文档碎片编译成一个动态方法，为下一步转换成委托做准备。
/// </summary>
/// <param name="fragment">要编译的文档碎片</param>
/// <returns>编译好的动态方法</returns>
private static DynamicMethod CompileDynamicMethod(IHtmlFragment fragment)
{
throw new NotImplementedException();
var method = new DynamicMethod("", typeof(IHtmlFragment), new[] { typeof(IHtmlFragmentManager) });
var il = method.GetILGenerator();
il.DeclareLocal(typeof(IHtmlContainer));
il.Emit(OpCodes.Ldarg_0); //ld manager manager
EmitCreateFragment(il, fragment); //create fragment manager fragment
il.Emit(OpCodes.Callvirt, CompleteDocument); //complete document document
il.Emit(OpCodes.Ret);
return(method);
}
internal FreeNode(IHtmlFragment fragment, IHtmlNodeFactory factory)
{
_fragment = fragment;
_factory = factory;
Node = _fragment.Nodes().First();
}
internal FreeNode( IHtmlFragment fragment, IHtmlNodeFactory factory )
{
_fragment = fragment;
_factory = factory;
Node = _fragment.Nodes().First();
}
/// <summary>
/// 在自己前面添加一个文档碎片
/// </summary>
/// <param name="node">要在其前面添加碎片的节点</param>
/// <param name="fragment">要添加 HTML 碎片</param>
/// <returns>添加后的节点集</returns>
public static IEnumerable <IHtmlNode> AddFragmentBeforeSelf(this IHtmlNode node, IHtmlFragment fragment)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
if (fragment == null)
{
throw new ArgumentNullException("fragment");
}
var container = node.Container;
if (container == null)
{
throw new InvalidOperationException();
}
lock (container.SyncRoot)
{
return(container.AddFragment(node.NodesIndexOfSelf(), fragment));
}
}
/// <summary>
/// 添加一个文档碎片
/// </summary>
/// <param name="container">要添加碎片的容器</param>
/// <param name="index">要添加的位置</param>
/// <param name="fragment">要添加的碎片</param>
/// <returns></returns>
public static IEnumerable <IHtmlNode> AddFragment(this IHtmlContainer container, int index, IHtmlFragment fragment)
{
if (container == null)
{
throw new ArgumentNullException("container");
}
if (fragment == null)
{
throw new ArgumentNullException("fragment");
}
return(fragment.Into(container, index));
}
/// <summary>
/// 添加一个文档碎片
/// </summary>
/// <param name="container">要添加碎片的容器</param>
/// <param name="fragment">要添加的碎片</param>
/// <returns></returns>
public static IEnumerable <IHtmlNode> AddFragment(this IHtmlContainer container, IHtmlFragment fragment)
{
if (container == null)
{
throw new ArgumentNullException("container");
}
if (fragment == null)
{
throw new ArgumentNullException("fragment");
}
lock (container.SyncRoot)
{
return(AddFragment(container, container.Nodes().Count(), fragment));
}
}
private static void EmitCreateFragment( ILGenerator il, IHtmlFragment fragment )
{
throw new NotImplementedException();
il.Emit( OpCodes.Callvirt, CreateFragment ); //create fragment manager fragment
}
/// <summary>
/// 将文档碎片编译成一个动态方法，为下一步转换成委托做准备。
/// </summary>
/// <param name="fragment">要编译的文档碎片</param>
/// <returns>编译好的动态方法</returns>
private static DynamicMethod CompileDynamicMethod( IHtmlFragment fragment )
{
throw new NotImplementedException();
var method = new DynamicMethod( "", typeof( IHtmlFragment ), new[] { typeof( IHtmlFragmentManager ) } );
var il = method.GetILGenerator();
il.DeclareLocal( typeof( IHtmlContainer ) );
il.Emit( OpCodes.Ldarg_0 ); //ld manager manager
EmitCreateFragment( il, fragment ); //create fragment manager fragment
il.Emit( OpCodes.Callvirt, CompleteDocument ); //complete document document
il.Emit( OpCodes.Ret );
return method;
}
private static void EmitCreateFragment(ILGenerator il, IHtmlFragment fragment)
{
throw new NotImplementedException();
il.Emit(OpCodes.Callvirt, CreateFragment); //create fragment manager fragment
}
