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//-----------------------------------------------------------------------
// <copyright file="SelectorButtonContract.cs" company="Outercurve Foundation">
// Copyright (c) Outercurve Foundation. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
namespace DotNetOpenAuth.OpenId.RelyingParty {
using System;
using System.Diagnostics.Contracts;
using System.Web.UI;
/// <summary>
/// The contract class for the <see cref="SelectorButton"/> class.
/// </summary>
[ContractClassFor(typeof(SelectorButton))]
internal abstract class SelectorButtonContract : SelectorButton {
/// <summary>
/// Ensures that this button has been initialized to a valid state.
/// </summary>
/// <remarks>
/// This is "internal" -- NOT "protected internal" deliberately. It makes it impossible
/// to derive from this class outside the assembly, which suits our purposes since the
/// <see cref="OpenIdSelector"/> control is not designed for an extensible set of button types.
/// </remarks>
internal override void EnsureValid() {
}
/// <summary>
/// Renders the leading attributes for the LI tag.
/// </summary>
/// <param name="writer">The writer.</param>
protected internal override void RenderLeadingAttributes(HtmlTextWriter writer) {
Requires.NotNull(writer, "writer");
}
/// <summary>
/// Renders the content of the button.
/// </summary>
/// <param name="writer">The writer.</param>
/// <param name="selector">The containing selector control.</param>
protected internal override void RenderButtonContent(HtmlTextWriter writer, OpenIdSelector selector) {
Requires.NotNull(writer, "writer");
Requires.NotNull(selector, "selector");
}
}
}
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