DeferredTextReference.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Framework / System / Windows / Controls / DeferredTextReference.cs / 1305600 / DeferredTextReference.cs
                        

                        
                            //---------------------------------------------------------------------------- 
//
// File: DeferredTextReference.cs
//
// Copyright (C) Microsoft Corporation.  All rights reserved. 
//
// Description: Proxy object passed to the property system to delay load 
//              TextProperty values. 
//
//--------------------------------------------------------------------------- 

namespace System.Windows.Controls
{
    using System.Windows.Documents; 

    // Proxy object passed to the property system to delay load TextProperty 
    // values. 
    internal class DeferredTextReference : DeferredReference
    { 
        //-----------------------------------------------------
        //
        //  Constructors
        // 
        //-----------------------------------------------------
 
        #region Constructors 

        internal DeferredTextReference(ITextContainer textContainer) 
        {
            _textContainer = textContainer;
        }
 
        #endregion Constructors
 
        //------------------------------------------------------ 
        //
        //  Internal Methods 
        //
        //-----------------------------------------------------

        #region Internal Methods 

        // Does the real work to calculate the current TextProperty value. 
        internal override object GetValue(BaseValueSourceInternal valueSource) 
        {
            string s = TextRangeBase.GetTextInternal(_textContainer.Start, _textContainer.End); 

            TextBox tb = _textContainer.Parent as TextBox;
            if (tb != null)
            { 
                tb.OnDeferredTextReferenceResolved(this, s);
            } 
 
            return s;
        } 

        // Gets the type of the value it represents
        internal override Type GetValueType()
        { 
            return typeof(string);
        } 
 
        #endregion Internal Methods
 
        //------------------------------------------------------
        //
        //  Private Fields
        // 
        //------------------------------------------------------
 
        #region Private Fields 

        // TextContainer mapped to this object. 
        private readonly ITextContainer _textContainer;

        #endregion Private Fields
     } 
}

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

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