Code:
/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Framework / MS / Internal / Annotations / AnnotationMap.cs / 1 / AnnotationMap.cs
//---------------------------------------------------------------------------- //// Copyright(C) Microsoft Corporation. All rights reserved. // // // Description: // AnnotationMap contains the implementation of the map // map between annotation id and attached annotations used by the service // // History: // 11/11/2003 [....]: created // 10/22/2004 [....]: Moved this class to MS.Internal namespace. // // Copyright(C) 2002 by Microsoft Corporation. All rights reserved. // //--------------------------------------------------------------------------- using System; using System.Collections; using System.Collections.Generic; using System.Diagnostics; using System.Windows.Annotations; namespace MS.Internal.Annotations { ////// The AnnotationMap holds a map between the Id's of annotations and IAttachedAnnotations /// internal class AnnotationMap { ////// Add an IAttachedAnnotation to the annotation map. /// /// the IAttachedAnnotation to be added to the map internal void AddAttachedAnnotation(IAttachedAnnotation attachedAnnotation) { Listlist = null; if (!_annotationIdToAttachedAnnotations.TryGetValue(attachedAnnotation.Annotation.Id, out list)) { list = new List (1); _annotationIdToAttachedAnnotations.Add(attachedAnnotation.Annotation.Id, list); } list.Add(attachedAnnotation); } /// /// Remove an IAttachedAnnotation from the annotation map. /// /// internal void RemoveAttachedAnnotation(IAttachedAnnotation attachedAnnotation) { Listlist = null; if (_annotationIdToAttachedAnnotations.TryGetValue(attachedAnnotation.Annotation.Id, out list)) { list.Remove(attachedAnnotation); if (list.Count == 0) { _annotationIdToAttachedAnnotations.Remove(attachedAnnotation.Annotation.Id); } } } /// /// Returns whether or not there are any annotations currently loaded. This can be /// used to avoid costly walks of the tree. /// internal bool IsEmpty { get { return _annotationIdToAttachedAnnotations.Count == 0; } } ////// Return a list of IAttachedAnnotations for a given annotation id /// /// ///list of IAttachedAnnotations internal ListGetAttachedAnnotations(Guid annotationId) { List list = null; if (!_annotationIdToAttachedAnnotations.TryGetValue(annotationId, out list)) { // return empty list if annotation id not found return _emptyList; } Debug.Assert(list != null, "there should be an attached annotation list for the annotationId: " + annotationId.ToString()); return list; } /// /// Return a list of all IAttachedAnnotations in the map /// ///list of IAttachedAnnotations internal ListGetAllAttachedAnnotations() { List result = new List (_annotationIdToAttachedAnnotations.Keys.Count); foreach (Guid annId in _annotationIdToAttachedAnnotations.Keys) { List list = _annotationIdToAttachedAnnotations[annId]; result.AddRange(list); } if (result.Count == 0) { return _emptyList; } return result; } // hash table to hold annotation id to AttachedAnnotations list private Dictionary > _annotationIdToAttachedAnnotations = new Dictionary >(); // a readonly empty list - cached for performance reasons private static readonly List _emptyList = new List (0); } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
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