namescope.cs source code in C# .NET

                        Code:
                         / Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / wpf / src / Framework / System / Windows / namescope.cs / 1 / namescope.cs
                        
                        
                            /****************************************************************************\ 
*
* File: NameScope.cs
*
*  Used to store mapping information for names occuring 
*  within the logical tree section.
* 
* Copyright (C) 2005 by Microsoft Corporation.  All rights reserved. 
*
\***************************************************************************/ 

using System;
using System.Windows;
using System.Collections; 
using System.Collections.Specialized;
using System.Globalization; 
using System.Windows.Markup; 
using System.ComponentModel;
using MS.Internal; 

namespace System.Windows
{
    ///  
    /// Used to store mapping information for names occuring
    /// within the logical tree section. 
    ///  
    public class NameScope : INameScope
    { 
        #region INameScope

        /// 
        /// Register Name-Object Map 
        /// 
        /// name to be registered 
        /// object mapped to name 
        public void RegisterName(string name, object scopedElement)
        { 
            if (name == null)
                throw new ArgumentNullException("name");

            if (scopedElement == null) 
                throw new ArgumentNullException("scopedElement");
 
            if (name == String.Empty) 
                throw new ArgumentException(SR.Get(SRID.NameScopeNameNotEmptyString));
 
            if (!NameValidationHelper.IsValidIdentifierName(name))
            {
                throw new ArgumentException(SR.Get(SRID.NameScopeInvalidIdentifierName, name));
            } 

            if (_nameMap == null) 
            { 
                _nameMap = new HybridDictionary();
                _nameMap[name] = scopedElement; 
            }
            else
            {
                object nameContext = _nameMap[name]; 
                // first time adding the Name, set it
                if (nameContext == null) 
                { 
                    _nameMap[name] = scopedElement;
                } 
                else if (scopedElement != nameContext)
                {
                    throw new ArgumentException(SR.Get(SRID.NameScopeDuplicateNamesNotAllowed, name));
                } 
            }
 
            if( TraceNameScope.IsEnabled ) 
            {
                TraceNameScope.TraceActivityItem( TraceNameScope.RegisterName, 
                                                  this,
                                                  name,
                                                  scopedElement );
            } 
        }
 
        ///  
        /// Unregister Name-Object Map
        ///  
        /// name to be registered
        public void UnregisterName(string name)
        {
            if (name == null) 
                throw new ArgumentNullException("name");
 
            if (name == String.Empty) 
                throw new ArgumentException(SR.Get(SRID.NameScopeNameNotEmptyString));
 
            if (_nameMap != null && _nameMap[name] != null)
            {
                _nameMap.Remove(name);
            } 
            else
            { 
                throw new ArgumentException(SR.Get(SRID.NameScopeNameNotFound, name)); 
            }
 
            if( TraceNameScope.IsEnabled )
            {
                TraceNameScope.TraceActivityItem( TraceNameScope.UnregisterName,
                                                  this, name ); 
            }
        } 
 
        /// 
        /// Find - Find the corresponding object given a Name 
        /// 
        /// Name for which context needs to be retrieved
        /// corresponding Context if found, else null
        public object FindName(string name) 
        {
            if (_nameMap == null || name == null || name == String.Empty) 
                return null; 

            return _nameMap[name]; 
        }

        #endregion INameScope
 
        #region InternalMethods
 
        internal static INameScope NameScopeFromObject(object obj) 
        {
            INameScope nameScope = obj as INameScope; 
            if (nameScope == null)
            {
                DependencyObject objAsDO = obj as DependencyObject;
                if (objAsDO != null) 
                {
                    nameScope = GetNameScope(objAsDO); 
                } 
            }
 
            return nameScope;
        }

        #endregion InternalMethods 

        #region DependencyProperties 
 
        /// 
        /// NameScope property. This is an attached property. 
        /// This property allows the dynamic attachment of NameScopes
        /// 
        public static readonly DependencyProperty NameScopeProperty
                                                  = DependencyProperty.RegisterAttached( 
                                                  "NameScope",
                                                  typeof(INameScope), 
                                                  typeof(NameScope)); 

        ///  
        /// Helper for setting NameScope property on a DependencyObject.
        /// 
        /// Dependency Object  to set NameScope property on.
        /// NameScope property value. 
        public static void SetNameScope(DependencyObject dependencyObject, INameScope value)
        { 
            if (dependencyObject == null) 
            {
                throw new ArgumentNullException("dependencyObject"); 
            }

            dependencyObject.SetValue(NameScopeProperty, value);
        } 

        ///  
        /// Helper for reading NameScope property from a DependencyObject. 
        /// 
        /// DependencyObject to read NameScope property from. 
        /// NameScope property value.
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        public static INameScope GetNameScope(DependencyObject dependencyObject)
        { 
            if (dependencyObject == null)
            { 
                throw new ArgumentNullException("dependencyObject"); 
            }
 
            return ((INameScope)dependencyObject.GetValue(NameScopeProperty));
        }

        #endregion DependencyProperties 

 
        #region Data 

        // This is a HybridDictionary of Name-Object maps 
        private HybridDictionary _nameMap;

        #endregion Data
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
/****************************************************************************\ 
*
* File: NameScope.cs
*
*  Used to store mapping information for names occuring 
*  within the logical tree section.
* 
* Copyright (C) 2005 by Microsoft Corporation.  All rights reserved. 
*
\***************************************************************************/ 

using System;
using System.Windows;
using System.Collections; 
using System.Collections.Specialized;
using System.Globalization; 
using System.Windows.Markup; 
using System.ComponentModel;
using MS.Internal; 

namespace System.Windows
{
    ///  
    /// Used to store mapping information for names occuring
    /// within the logical tree section. 
    ///  
    public class NameScope : INameScope
    { 
        #region INameScope

        /// 
        /// Register Name-Object Map 
        /// 
        /// name to be registered 
        /// object mapped to name 
        public void RegisterName(string name, object scopedElement)
        { 
            if (name == null)
                throw new ArgumentNullException("name");

            if (scopedElement == null) 
                throw new ArgumentNullException("scopedElement");
 
            if (name == String.Empty) 
                throw new ArgumentException(SR.Get(SRID.NameScopeNameNotEmptyString));
 
            if (!NameValidationHelper.IsValidIdentifierName(name))
            {
                throw new ArgumentException(SR.Get(SRID.NameScopeInvalidIdentifierName, name));
            } 

            if (_nameMap == null) 
            { 
                _nameMap = new HybridDictionary();
                _nameMap[name] = scopedElement; 
            }
            else
            {
                object nameContext = _nameMap[name]; 
                // first time adding the Name, set it
                if (nameContext == null) 
                { 
                    _nameMap[name] = scopedElement;
                } 
                else if (scopedElement != nameContext)
                {
                    throw new ArgumentException(SR.Get(SRID.NameScopeDuplicateNamesNotAllowed, name));
                } 
            }
 
            if( TraceNameScope.IsEnabled ) 
            {
                TraceNameScope.TraceActivityItem( TraceNameScope.RegisterName, 
                                                  this,
                                                  name,
                                                  scopedElement );
            } 
        }
 
        ///  
        /// Unregister Name-Object Map
        ///  
        /// name to be registered
        public void UnregisterName(string name)
        {
            if (name == null) 
                throw new ArgumentNullException("name");
 
            if (name == String.Empty) 
                throw new ArgumentException(SR.Get(SRID.NameScopeNameNotEmptyString));
 
            if (_nameMap != null && _nameMap[name] != null)
            {
                _nameMap.Remove(name);
            } 
            else
            { 
                throw new ArgumentException(SR.Get(SRID.NameScopeNameNotFound, name)); 
            }
 
            if( TraceNameScope.IsEnabled )
            {
                TraceNameScope.TraceActivityItem( TraceNameScope.UnregisterName,
                                                  this, name ); 
            }
        } 
 
        /// 
        /// Find - Find the corresponding object given a Name 
        /// 
        /// Name for which context needs to be retrieved
        /// corresponding Context if found, else null
        public object FindName(string name) 
        {
            if (_nameMap == null || name == null || name == String.Empty) 
                return null; 

            return _nameMap[name]; 
        }

        #endregion INameScope
 
        #region InternalMethods
 
        internal static INameScope NameScopeFromObject(object obj) 
        {
            INameScope nameScope = obj as INameScope; 
            if (nameScope == null)
            {
                DependencyObject objAsDO = obj as DependencyObject;
                if (objAsDO != null) 
                {
                    nameScope = GetNameScope(objAsDO); 
                } 
            }
 
            return nameScope;
        }

        #endregion InternalMethods 

        #region DependencyProperties 
 
        /// 
        /// NameScope property. This is an attached property. 
        /// This property allows the dynamic attachment of NameScopes
        /// 
        public static readonly DependencyProperty NameScopeProperty
                                                  = DependencyProperty.RegisterAttached( 
                                                  "NameScope",
                                                  typeof(INameScope), 
                                                  typeof(NameScope)); 

        ///  
        /// Helper for setting NameScope property on a DependencyObject.
        /// 
        /// Dependency Object  to set NameScope property on.
        /// NameScope property value. 
        public static void SetNameScope(DependencyObject dependencyObject, INameScope value)
        { 
            if (dependencyObject == null) 
            {
                throw new ArgumentNullException("dependencyObject"); 
            }

            dependencyObject.SetValue(NameScopeProperty, value);
        } 

        ///  
        /// Helper for reading NameScope property from a DependencyObject. 
        /// 
        /// DependencyObject to read NameScope property from. 
        /// NameScope property value.
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
        public static INameScope GetNameScope(DependencyObject dependencyObject)
        { 
            if (dependencyObject == null)
            { 
                throw new ArgumentNullException("dependencyObject"); 
            }
 
            return ((INameScope)dependencyObject.GetValue(NameScopeProperty));
        }

        #endregion DependencyProperties 

 
        #region Data 

        // This is a HybridDictionary of Name-Object maps 
        private HybridDictionary _nameMap;

        #endregion Data
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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