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//-----------------------------------------------------------------------
//
// Microsoft Windows Client Platform
// Copyright (C) Microsoft Corporation, 2004
//
// File: TextHidden.cs
//
// Contents: Implementation of text hidden content
//
// Spec: http://team/sites/Avalon/Specs/Text%20Formatting%20API.doc
//
// Created: 1-2-2004 Worachai Chaoweeraprasit (wchao)
//
//------------------------------------------------------------------------
using System;
using System.Collections;
using System.Windows;
using SR=MS.Internal.PresentationCore.SR;
using SRID=MS.Internal.PresentationCore.SRID;
namespace System.Windows.Media.TextFormatting
{
/// <summary>
/// Specialized text run used to mark a range of hidden characters
/// </summary>
public class TextHidden : TextRun
{
private int _length;
#region Constructors
/// <summary>
/// Construct a hidden text run
/// </summary>
/// <param name="length">number of characters</param>
public TextHidden(
int length
)
{
if (length <= 0)
{
throw new ArgumentOutOfRangeException("length", SR.Get(SRID.ParameterMustBeGreaterThanZero));
}
_length = length;
}
#endregion
/// <summary>
/// Reference to character buffer
/// </summary>
public sealed override CharacterBufferReference CharacterBufferReference
{
get { return new CharacterBufferReference(); }
}
/// <summary>
/// Character length
/// </summary>
public sealed override int Length
{
get { return _length; }
}
/// <summary>
/// A set of properties shared by every characters in the run
/// </summary>
public sealed override TextRunProperties Properties
{
get { return null; }
}
}
}
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