Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Xml / System / Xml / Dom / XmlAttributeCollection.cs / 1 / XmlAttributeCollection.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- namespace System.Xml { using System; using System.Collections; using System.Diagnostics; // Represents a collection of attributes that can be accessed by name or index. public sealed class XmlAttributeCollection: XmlNamedNodeMap, ICollection { internal XmlAttributeCollection( XmlNode parent ): base( parent ) { } // Gets the attribute with the specified index. [System.Runtime.CompilerServices.IndexerName ("ItemOf")] public XmlAttribute this[ int i ] { get { try { return(XmlAttribute) Nodes[i]; } catch ( ArgumentOutOfRangeException ) { throw new IndexOutOfRangeException(Res.GetString(Res.Xdom_IndexOutOfRange)); } } } // Gets the attribute with the specified name. [System.Runtime.CompilerServices.IndexerName ("ItemOf")] public XmlAttribute this[ string name ] { get { ArrayList nodes = this.Nodes; int hash = XmlName.GetHashCode(name); for (int i = 0; i < nodes.Count; i++) { XmlAttribute node = (XmlAttribute) nodes[i]; if (hash == node.LocalNameHash && name == node.Name ) { return node; } } return null; } } // Gets the attribute with the specified LocalName and NamespaceUri. [System.Runtime.CompilerServices.IndexerName ("ItemOf")] public XmlAttribute this[ string localName, string namespaceURI ] { get { ArrayList nodes = this.Nodes; int hash = XmlName.GetHashCode(localName); for (int i = 0; i < nodes.Count; i++) { XmlAttribute node = (XmlAttribute) nodes[i]; if (hash == node.LocalNameHash && localName == node.LocalName && namespaceURI == node.NamespaceURI) { return node; } } return null; } } internal int FindNodeOffset( XmlAttribute node ) { ArrayList nodes = this.Nodes; for (int i = 0; i < nodes.Count; i++) { XmlAttribute tmp = (XmlAttribute) nodes[i]; if (tmp.LocalNameHash == node.LocalNameHash && tmp.Name == node.Name && tmp.NamespaceURI == node.NamespaceURI ) { return i; } } return -1; } internal int FindNodeOffsetNS(XmlAttribute node) { ArrayList nodes = Nodes; for (int i = 0; i < nodes.Count; i++) { XmlAttribute tmp = (XmlAttribute) nodes[i]; if (tmp.LocalNameHash == node.LocalNameHash && tmp.LocalName == node.LocalName && tmp.NamespaceURI == node.NamespaceURI) { return i; } } return -1; } // Adds a XmlNode using its Name property public override XmlNode SetNamedItem(XmlNode node) { if (node != null && !(node is XmlAttribute)) throw new ArgumentException(Res.GetString(Res.Xdom_AttrCol_Object)); int offset = FindNodeOffset( node.LocalName, node.NamespaceURI ); if (offset == -1) { return InternalAppendAttribute( (XmlAttribute) node ); } else { XmlNode oldNode = base.RemoveNodeAt( offset ); InsertNodeAt( offset, node ); return oldNode; } } // Inserts the specified node as the first node in the collection. public XmlAttribute Prepend( XmlAttribute node ) { if (node.OwnerDocument != null && node.OwnerDocument != parent.OwnerDocument) throw new ArgumentException(Res.GetString(Res.Xdom_NamedNode_Context)); if (node.OwnerElement != null) Detach( node ); RemoveDuplicateAttribute( node ); InsertNodeAt( 0, node ); return node; } // Inserts the specified node as the last node in the collection. public XmlAttribute Append(XmlAttribute node) { XmlDocument doc = node.OwnerDocument; if (doc == null || doc.IsLoading == false) { if (doc != null && doc != parent.OwnerDocument) { throw new ArgumentException(Res.GetString(Res.Xdom_NamedNode_Context)); } if (node.OwnerElement != null) { Detach(node); } AddNode(node); } else { base.AddNodeForLoad(node, doc); InsertParentIntoElementIdAttrMap(node); } return node; } // Inserts the specified attribute immediately before the specified reference attribute. public XmlAttribute InsertBefore( XmlAttribute newNode, XmlAttribute refNode ) { if ( newNode == refNode ) return newNode; if (refNode == null) return Append(newNode); if (refNode.OwnerElement != parent) throw new ArgumentException(Res.GetString(Res.Xdom_AttrCol_Insert)); if (newNode.OwnerDocument != null && newNode.OwnerDocument != parent.OwnerDocument) throw new ArgumentException(Res.GetString(Res.Xdom_NamedNode_Context)); if (newNode.OwnerElement != null) Detach( newNode ); int offset = FindNodeOffset( refNode.LocalName, refNode.NamespaceURI ); Debug.Assert( offset != -1 ); // the if statement above guarantees that the ref node is in the collection int dupoff = RemoveDuplicateAttribute( newNode ); if ( dupoff >= 0 && dupoff < offset ) offset--; InsertNodeAt( offset, newNode ); return newNode; } // Inserts the specified attribute immediately after the specified reference attribute. public XmlAttribute InsertAfter( XmlAttribute newNode, XmlAttribute refNode ) { if ( newNode == refNode ) return newNode; if (refNode == null) return Prepend(newNode); if (refNode.OwnerElement != parent) throw new ArgumentException(Res.GetString(Res.Xdom_AttrCol_Insert)); if (newNode.OwnerDocument != null && newNode.OwnerDocument != parent.OwnerDocument) throw new ArgumentException(Res.GetString(Res.Xdom_NamedNode_Context)); if (newNode.OwnerElement != null) Detach( newNode ); int offset = FindNodeOffset( refNode.LocalName, refNode.NamespaceURI ); Debug.Assert( offset != -1 ); // the if statement above guarantees that the ref node is in the collection int dupoff = RemoveDuplicateAttribute( newNode ); if ( dupoff >= 0 && dupoff < offset ) offset--; InsertNodeAt( offset+1, newNode ); return newNode; } // Removes the specified attribute node from the map. public XmlAttribute Remove( XmlAttribute node ) { if (nodes != null) { int cNodes = nodes.Count; for (int offset = 0; offset < cNodes; offset++) { if (nodes[offset] == node) { RemoveNodeAt( offset ); return node; } } } return null; } // Removes the attribute node with the specified index from the map. public XmlAttribute RemoveAt( int i ) { if (i < 0 || i >= Count || nodes == null) return null; return(XmlAttribute) RemoveNodeAt( i ); } // Removes all attributes from the map. public void RemoveAll() { int n = Count; while (n > 0) { n--; RemoveAt( n ); } } void ICollection.CopyTo(Array array, int index) { for (int i=0, max=Nodes.Count; i
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