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RenderTagExtension.cs
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255 lines (237 loc) · 9.44 KB
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namespace Constellation.Html
{
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Web.UI;
/// <summary>
/// Extension to make working with HtmlTextWriter easier.
/// </summary>
[SuppressMessage("Microsoft.Naming", "CA1704:IdentifiersShouldBeSpelledCorrectly", Justification = "HTML Tags are not English, FX Cop. Stop correcting my spelling.")]
public static class RenderTagExtension
{
#region Strongly Typed Tags
/// <summary>
/// Creates an HTML tag and adds the provided ID and CSS Class to the tag.
/// </summary>
/// <param name="writer">The HTMLTextWriter.</param>
/// <param name="tag">The type of HTML tag.</param>
/// <param name="id">The CSS ID of the HTML tag.</param>
/// <param name="cssClass">The CSS Class of the HTML tag.</param>
/// <returns>HTML tag with id and class attributes.</returns>
[SuppressMessage("Microsoft.Design", "CA1026:DefaultParametersShouldNotBeUsed", Justification = "Welcome to .NET 4.0 FX Cop.")]
public static HtmlTag RenderTag(this HtmlTextWriter writer, HtmlTextWriterTag tag, string id = null, string cssClass = null)
{
return RenderTag(writer, tag, HtmlTag.TagStyle.Inline, ToAttributes(id, cssClass));
}
/// <summary>
/// Creates an HTML tag and adds the provided ID and CSS Class to the tag.
/// </summary>
/// <param name="writer">
/// The HTMLTextWriter.
/// </param>
/// <param name="tag">
/// The type of HTML tag.
/// </param>
/// <param name="tagStyle">
/// The tag Style.
/// </param>
/// <param name="id">
/// The CSS ID of the HTML tag.
/// </param>
/// <param name="cssClass">
/// The CSS Class of the HTML tag.
/// </param>
/// <returns>
/// HTML tag with id and class attributes.
/// </returns>
[SuppressMessage("Microsoft.Design", "CA1026:DefaultParametersShouldNotBeUsed", Justification = "Welcome to .NET 4.0 FX Cop.")]
public static HtmlTag RenderTag(this HtmlTextWriter writer, HtmlTextWriterTag tag, HtmlTag.TagStyle tagStyle, string id = null, string cssClass = null)
{
return RenderTag(writer, tag, tagStyle, ToAttributes(id, cssClass));
}
/// <summary>
/// Creates an HTML tag and adds any provided attributes to the tag.
/// </summary>
/// <param name="writer">The HTMLTextWriter.</param>
/// <param name="tag">The type of HTML tag.</param>
/// <param name="attributes">HTML attributes.</param>
/// <returns>HTML tag with attributes.</returns>
public static HtmlTag RenderTag(this HtmlTextWriter writer, HtmlTextWriterTag tag, params HtmlAttribute[] attributes)
{
return RenderTag(writer, tag, HtmlTag.TagStyle.Inline, attributes);
}
/// <summary>
/// Creates an HTML tag and adds any provided attributes to the tag.
/// </summary>
/// <param name="writer">
/// The HTMLTextWriter.
/// </param>
/// <param name="tag">
/// The type of HTML tag.
/// </param>
/// <param name="tagStyle">
/// The tag Style.
/// </param>
/// <param name="attributes">
/// HTML attributes.
/// </param>
/// <returns>
/// HTML tag with attributes.
/// </returns>
public static HtmlTag RenderTag(this HtmlTextWriter writer, HtmlTextWriterTag tag, HtmlTag.TagStyle tagStyle, params HtmlAttribute[] attributes)
{
return new HtmlTag(writer, tag, tagStyle, attributes);
}
#endregion
#region Self-Closing
/// <summary>
/// Creates an HTML tag and adds the provided ID and CSS Class to the tag.
/// </summary>
/// <param name="writer">The HTMLTextWriter.</param>
/// <param name="tag">The type of HTML tag.</param>
/// <param name="id">The CSS ID of the HTML tag.</param>
/// <param name="cssClass">The CSS Class of the HTML tag.</param>
[SuppressMessage("Microsoft.Design", "CA1026:DefaultParametersShouldNotBeUsed", Justification = "Welcome to .NET 4.0 FX Cop.")]
public static void RenderSelfClosingTag(this HtmlTextWriter writer, HtmlTextWriterTag tag, string id = null, string cssClass = null)
{
RenderSelfClosingTag(writer, tag, ToAttributes(id, cssClass));
}
/// <summary>
/// Creates a self closing HTML tag, such as line break or image.
/// </summary>
/// <param name="writer">The HTMLTextWriter.</param>
/// <param name="tag">The type of HTML tag.</param>
/// <param name="attributes">HTML attributes.</param>
public static void RenderSelfClosingTag(this HtmlTextWriter writer, HtmlTextWriterTag tag, params HtmlAttribute[] attributes)
{
using (new HtmlTag(writer, tag, attributes))
{
}
}
#endregion
#region Ad-Hoc Self Closing Tags by Text
/// <summary>
/// Creates an HTML tag and adds the provided ID and CSS Class to the tag.
/// </summary>
/// <param name="writer">The HTMLTextWriter.</param>
/// <param name="tag">The type of HTML tag as a string.</param>
/// <param name="id">The CSS ID of the HTML tag.</param>
/// <param name="cssClass">The CSS Class of the HTML tag.</param>
[SuppressMessage("Microsoft.Design", "CA1026:DefaultParametersShouldNotBeUsed", Justification = "Welcome to .NET 4.0 FX Cop.")]
public static void RenderSelfClosingTag(this HtmlTextWriter writer, string tag, string id = null, string cssClass = null)
{
RenderSelfClosingTag(writer, tag, ToAttributes(id, cssClass));
}
/// <summary>
/// Creates a self closing HTML tag, such as line break or image.
/// </summary>
/// <param name="writer">The HTMLTextWriter.</param>
/// <param name="tag">The type of HTML tag as a string.</param>
/// <param name="attributes">HTML attributes.</param>
public static void RenderSelfClosingTag(this HtmlTextWriter writer, string tag, params HtmlAttribute[] attributes)
{
writer.WriteBeginTag(tag);
foreach (var attribute in attributes)
{
writer.WriteAttribute(attribute.Name, attribute.Value);
}
writer.Write("/>");
}
#endregion
#region Ad-Hoc Tags by Text
/// <summary>
/// Creates an HTML tag and adds the provided ID and CSS Class to the tag.
/// </summary>
/// <param name="writer">The HTMLTextWriter.</param>
/// <param name="tag">The type of HTML tag.</param>
/// <param name="id">The CSS ID of the HTML tag.</param>
/// <param name="cssClass">The CSS Class of the HTML tag.</param>
/// <returns>HTML tag with id and class attributes.</returns>
[SuppressMessage("Microsoft.Design", "CA1026:DefaultParametersShouldNotBeUsed", Justification = "Welcome to .NET 4.0 FX Cop.")]
public static HtmlTag RenderTag(this HtmlTextWriter writer, string tag, string id = null, string cssClass = null)
{
return RenderTag(writer, tag, HtmlTag.TagStyle.Inline, ToAttributes(id, cssClass));
}
/// <summary>
/// Creates an HTML tag and adds any provided attributes to the tag.
/// </summary>
/// <param name="writer">The HTMLTextWriter.</param>
/// <param name="tag">The type of HTML tag.</param>
/// <param name="attributes">HTML attributes.</param>
/// <returns>HTML tag with attributes.</returns>
public static HtmlTag RenderTag(this HtmlTextWriter writer, string tag, params HtmlAttribute[] attributes)
{
return RenderTag(writer, tag, HtmlTag.TagStyle.Inline, attributes);
}
/// <summary>
/// Creates an HTML tag and adds the provided ID and CSS Class to the tag.
/// </summary>
/// <param name="writer">
/// The HTMLTextWriter.
/// </param>
/// <param name="tag">
/// The type of HTML tag.
/// </param>
/// <param name="tagStyle">
/// The tag Style.
/// </param>
/// <param name="id">
/// The CSS ID of the HTML tag.
/// </param>
/// <param name="cssClass">
/// The CSS Class of the HTML tag.
/// </param>
/// <returns>
/// HTML tag with id and class attributes.
/// </returns>
[SuppressMessage("Microsoft.Design", "CA1026:DefaultParametersShouldNotBeUsed", Justification = "Welcome to .NET 4.0 FX Cop.")]
public static HtmlTag RenderTag(this HtmlTextWriter writer, string tag, HtmlTag.TagStyle tagStyle, string id = null, string cssClass = null)
{
return RenderTag(writer, tag, tagStyle, ToAttributes(id, cssClass));
}
/// <summary>
/// Creates an HTML tag and adds any provided attributes to the tag.
/// </summary>
/// <param name="writer">
/// The HTMLTextWriter.
/// </param>
/// <param name="tag">
/// The type of HTML tag.
/// </param>
/// <param name="tagStyle">
/// The tag Style.
/// </param>
/// <param name="attributes">
/// HTML attributes.
/// </param>
/// <returns>
/// HTML tag with attributes.
/// </returns>
public static HtmlTag RenderTag(this HtmlTextWriter writer, string tag, HtmlTag.TagStyle tagStyle, params HtmlAttribute[] attributes)
{
return new HtmlTag(writer, tag, tagStyle, attributes);
}
#endregion
#region Attribute Management
/// <summary>
/// Converts a series of strings to an array of HtmlAttributes.
/// </summary>
/// <param name="id">A CSS ID string.</param>
/// <param name="cssClass">A CSS Class string.</param>
/// <returns>An array of HtmlAttributes. The Array may be empty.</returns>
private static HtmlAttribute[] ToAttributes(string id, string cssClass)
{
var attributes = new List<HtmlAttribute>();
if (!string.IsNullOrEmpty(id))
{
attributes.Add(new HtmlAttribute(HtmlTextWriterAttribute.Id, id));
}
if (!string.IsNullOrEmpty(cssClass))
{
attributes.Add(new HtmlAttribute(HtmlTextWriterAttribute.Class, cssClass));
}
return attributes.ToArray();
}
#endregion
}
}