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/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Framework / System / Windows / Data / XmlNamespaceMappingCollection.cs / 2 / XmlNamespaceMappingCollection.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // Description: Implementation of XmlNamespaceMappingCollection object. // // Specs: [....]/connecteddata/M5%20Specs/XmlDataSource.mht // [....]/connecteddata/M5%20Specs/WCP%20DataSources.mht // //--------------------------------------------------------------------------- using System; using System.Collections; // IEnumerator using System.Collections.Generic; // ICollectionusing System.Xml; using System.Windows.Markup; using MS.Utility; namespace System.Windows.Data { /// /// XmlNamespaceMappingCollection Class /// Used to declare namespaces to be used in Xml data binding XPath queries /// [Localizability(LocalizationCategory.NeverLocalize)] public class XmlNamespaceMappingCollection : XmlNamespaceManager, ICollection, IAddChildInternal { /// /// Constructor /// public XmlNamespaceMappingCollection() : base(new NameTable()) {} #region IAddChild ////// IAddChild implementation /// /// void IAddChild.AddChild(object value) { AddChild(value); } ////// /// IAddChild implementation /// /// protected virtual void AddChild(object value) { XmlNamespaceMapping mapping = value as XmlNamespaceMapping; if (mapping == null) throw new ArgumentException(SR.Get(SRID.RequiresXmlNamespaceMapping, value.GetType().FullName), "value"); Add(mapping); } ////// IAddChild implementation /// /// void IAddChild.AddText(string text) { AddText(text); } ////// IAddChild implementation /// /// protected virtual void AddText(string text) { if (text == null) throw new ArgumentNullException("text"); XamlSerializerUtil.ThrowIfNonWhiteSpaceInAddText(text, this); } #endregion #region ICollection/// /// Add XmlNamespaceMapping /// ///mapping is null public void Add(XmlNamespaceMapping mapping) { if (mapping == null) throw new ArgumentNullException("mapping"); if (mapping.Uri == null) throw new ArgumentException(SR.Get(SRID.RequiresXmlNamespaceMappingUri), "mapping"); // this.AddNamespace(mapping.Prefix, mapping.Uri.OriginalString); } ////// Remove all XmlNamespaceMappings /// ////// This is potentially an expensive operation. /// It may be cheaper to simply create a new XmlNamespaceMappingCollection. /// public void Clear() { int count = Count; XmlNamespaceMapping[] array = new XmlNamespaceMapping[count]; CopyTo(array, 0); for (int i = 0; i < count; ++i) { Remove(array[i]); } } ////// Add XmlNamespaceMapping /// ///mapping is null public bool Contains(XmlNamespaceMapping mapping) { if (mapping == null) throw new ArgumentNullException("mapping"); if (mapping.Uri == null) throw new ArgumentException(SR.Get(SRID.RequiresXmlNamespaceMappingUri), "mapping"); return (this.LookupNamespace(mapping.Prefix) == mapping.Uri.OriginalString); } ////// Copy XmlNamespaceMappings to array /// public void CopyTo(XmlNamespaceMapping[] array, int arrayIndex) { if (array == null) throw new ArgumentNullException("array"); int i = arrayIndex; int maxLength = array.Length; foreach (XmlNamespaceMapping mapping in this) { if (i >= maxLength) throw new ArgumentException(SR.Get(SRID.Collection_CopyTo_NumberOfElementsExceedsArrayLength, "arrayIndex", "array")); array[i] = mapping; ++ i; } } ////// Remove XmlNamespaceMapping /// ////// true if the mapping was removed /// ///mapping is null public bool Remove(XmlNamespaceMapping mapping) { if (mapping == null) throw new ArgumentNullException("mapping"); if (mapping.Uri == null) throw new ArgumentException(SR.Get(SRID.RequiresXmlNamespaceMappingUri), "mapping"); if (Contains(mapping)) { this.RemoveNamespace(mapping.Prefix, mapping.Uri.OriginalString); return true; } return false; } ////// Count of the number of XmlNamespaceMappings /// public int Count { get { int count = 0; foreach (XmlNamespaceMapping mapping in this) { ++ count; } return count; } } ////// Value to indicate if this collection is read only /// public bool IsReadOnly { get { return false; } } ////// IEnumerable implementation. /// ////// This enables the serializer to serialize the contents of the XmlNamespaceMappingCollection. /// The default namespaces (xnm, xml, and string.Empty) are not included in this enumeration. /// public override IEnumerator GetEnumerator() { return ProtectedGetEnumerator(); } ////// IEnumerable (generic) implementation. /// IEnumeratorIEnumerable .GetEnumerator() { return ProtectedGetEnumerator(); } /// /// Protected member for use by IEnumerable implementations. /// protected IEnumeratorProtectedGetEnumerator() { IEnumerator enumerator = BaseEnumerator; while (enumerator.MoveNext()) { string prefix = (string) enumerator.Current; // ignore the default namespaces added automatically in the XmlNamespaceManager if (prefix == "xmlns" || prefix == "xml") continue; string ns = this.LookupNamespace(prefix); // ignore the empty prefix if the namespace has not been reassigned if ((prefix == string.Empty) && (ns == string.Empty)) continue; Uri uri = new Uri(ns, UriKind.RelativeOrAbsolute); XmlNamespaceMapping xnm = new XmlNamespaceMapping(prefix, uri); yield return xnm; } } // The iterator above cannot access base.GetEnumerator directly - this // causes build warning 1911, and makes MoveNext throw a security // exception under partial trust (bug 1785518). Accessing it indirectly // through this property fixes the problem. private IEnumerator BaseEnumerator { get { return base.GetEnumerator(); } } #endregion ICollection } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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