/// <summary>
/// Opens a <c><tbody></c> block after first closing the existing
/// <c><thead></c> block opened by a previous call to
/// <see cref="TableHead(FluentRenderTreeBuilder, string?, string?, string?, int)">TableHead(...)</see>.
/// </summary>
/// <param name="frtb">The <see cref="FluentRenderTreeBuilder"/>.</param>
/// <param name="line">The source code line number used to generate the sequence number.</param>
public static FluentRenderTreeBuilder OpenTableBody(this FluentRenderTreeBuilder frtb,
[CallerLineNumber] int line = 0)
=> frtb
.Close(line: line) // table-head
.OpenElement("tbody", null, null, line: line)
.CloseHelper(l => frtb.Close(2, line: l)); // tr, thead
/// <summary>
/// Calls <see cref="FluentRenderTreeBuilder.Close(bool, int)">Close(...)</see> with the
/// <c>prettyPrint</c> parameter set to <c>false</c>, to generate markup to close the
/// last opened <c>Region</c>, <c>Element</c> or <c>Component</c> block without any
/// newline or indent whitespace, even if pretty-printing is enabled (see the
/// <see cref="FluentRenderTreeBuilder"/> overview for details on pretty-printing).
/// </summary>
/// <param name="frtb">The <see cref="FluentRenderTreeBuilder"/>.</param>
/// <param name="line">The source code line number used to generate the sequence number.</param>
public static FluentRenderTreeBuilder CloseInline(this FluentRenderTreeBuilder frtb,
[CallerLineNumber] int line = 0)
=> frtb.Close(prettyPrint: false, line);
/// <summary>
/// Opens a new <c><tr></c> block, adding the given CSS class attribute if provided,
/// after first closing the currently open row.
/// </summary>
/// <remarks>
/// Note: Do not use this method with an
/// <see cref="OpenAutoTable(FluentRenderTreeBuilder, string?, string?, string?, int)">OpenAutoTable(...)</see>;
/// instead, use <see cref="NewAutoRow(FluentRenderTreeBuilder, string?, int)">NewAutoRow(...)</see>.
/// </remarks>
/// <param name="frtb">The <see cref="FluentRenderTreeBuilder"/>.</param>
/// <param name="class">The optional CSS class name for the new table row.</param>
/// <param name="line">The source code line number used to generate the sequence number.</param>
public static FluentRenderTreeBuilder NewRow(this FluentRenderTreeBuilder frtb,
string? @class = null, [CallerLineNumber] int line = 0)
=> frtb
.Close(line: line) // tr
.OpenRow(@class, line);
/// <summary>
/// Generates a <c><p></c> block containing a component of the given type, adding
/// the given id and CSS class attributes to the <c><p></c> and setting its key,
/// if provided.
/// </summary>
/// <remarks>
/// Note: This block is automatically closed, so calling
/// <see cref="FluentRenderTreeBuilder.Close(bool, int)">Close(...)</see> is unnecessary.
/// </remarks>
/// <param name="frtb">The <see cref="FluentRenderTreeBuilder"/>.</param>
/// <param name="type">The <see cref="Type"/> of the component to add.</param>
/// <param name="class">The optional CSS class name.</param>
/// <param name="id">The optional id attribute value.</param>
/// <param name="key">The optional key to set for this element.</param>
/// <param name="prettyPrint"><c>false</c> to prevent insertion of newline and indent
/// whitespace before the markup for this element, even if
/// <see cref="FluentRenderTreeBuilder.PrettyPrinting"/> is enabled.</param>
/// <param name="line">The source code line number used to generate the sequence number.</param>
public static FluentRenderTreeBuilder ComponentP(this FluentRenderTreeBuilder frtb,
Type type, string? @class = null, string?id = null, object?key = null,
bool prettyPrint = true, [CallerLineNumber] int line = 0)
=> frtb.ComponentElement("p", type, @class, id, key, prettyPrint, line);
/// <summary>
/// Generates a <c><p></c> block containing a component of the specified type,
/// adding the given id and CSS class attributes to the <c><p></c> and setting its
/// key, if provided.
/// </summary>
/// <remarks>
/// Note: This block is automatically closed, so calling
/// <see cref="FluentRenderTreeBuilder.Close(bool, int)">Close(...)</see> is unnecessary.
/// </remarks>
/// <typeparam name="TComponent">The <see cref="Type"/> of the component to add.</typeparam>
/// <param name="frtb">The <see cref="FluentRenderTreeBuilder"/>.</param>
/// <param name="class">The optional CSS class name.</param>
/// <param name="id">The optional id attribute value.</param>
/// <param name="key">The optional key to set for this element.</param>
/// <param name="prettyPrint"><c>false</c> to prevent insertion of newline and indent
/// whitespace before the markup for this element, even if
/// <see cref="FluentRenderTreeBuilder.PrettyPrinting"/> is enabled.</param>
/// <param name="line">The source code line number used to generate the sequence number.</param>
public static FluentRenderTreeBuilder ComponentP <TComponent>(this FluentRenderTreeBuilder frtb,
string? @class = null, string?id = null, object?key = null, bool prettyPrint = true,
[CallerLineNumber] int line = 0)
where TComponent : IComponent
=> frtb.ComponentElement <TComponent>("p", @class, id, key, prettyPrint, line);
/// <summary>
/// Generates a <c><td></c> block containing the given markup, adding the given CSS
/// class attribute, and setting the key, if provided.
/// </summary>
/// <param name="frtb">The <see cref="FluentRenderTreeBuilder"/>.</param>
/// <param name="markup">The markup content to add in the <c><td></c> block.</param>
/// <param name="class">The optional CSS class name.</param>
/// <param name="key">The optional key to set for this table cell.</param>
/// <param name="line">The source code line number used to generate the sequence number.</param>
public static FluentRenderTreeBuilder Cell(this FluentRenderTreeBuilder frtb,
object markup, string? @class = null, object?key = null,
[CallerLineNumber] int line = 0)
=> frtb.Element("td", markup, @class, key: key, line: line);
/// <summary>
/// Opens a new <c><li></c> block within a
/// <see cref="OpenList(FluentRenderTreeBuilder, string?, string?, int)">OpenList(...)</see> or an
/// <see cref="OpenOrderedList(FluentRenderTreeBuilder, string?, string?, int)">OpenOrderedList(...)</see>,
/// adding the given CSS class attribute, and setting
/// the key, if provided, after first closing the currently open item.
/// </summary>
/// <remarks>
/// Note: Do not use this method within an
/// <see cref="OpenAutoList(FluentRenderTreeBuilder, string?, string?, string?, object?, int)">
/// OpenAutoList(...)</see> or an
/// <see cref="OpenAutoOrderedList(FluentRenderTreeBuilder, string?, string?, string?, object?, int)">
/// OpenAutoOrderedList(...)</see>;
/// instead, use <see cref="NewAutoItem(FluentRenderTreeBuilder, string?, object?, int)">
/// NewAutoItem(...)</see>.
/// </remarks>
/// <param name="frtb">The <see cref="FluentRenderTreeBuilder"/>.</param>
/// <param name="class">The optional CSS class name for the new list item.</param>
/// <param name="key">The optional key to set for this list item.</param>
/// <param name="line">The source code line number used to generate the sequence number.</param>
public static FluentRenderTreeBuilder NewItem(this FluentRenderTreeBuilder frtb,
string? @class = null, object?key = null, [CallerLineNumber] int line = 0)
=> frtb
.Close(line: line) // li
.OpenItem(@class, key, line);
/// <summary>
/// Adds a <c>data-[name]</c> attribute.
/// </summary>
/// <param name="frtb"></param>
/// <param name="name">The data value name.</param>
/// <param name="value">The data value.</param>
/// <param name="line">The source code line number used to generate the sequence number.</param>
public static FluentRenderTreeBuilder Data(this FluentRenderTreeBuilder frtb, string?name,
object value, [CallerLineNumber] int line = 0)
=> string.IsNullOrEmpty(name) ? frtb : frtb.Attribute($"data-{name}", value, line);
/// <summary>
/// Generates a heading block containing the given markup, adding the given id and CSS
/// class attributes to the heading, if provided.
/// </summary>
/// <remarks>
/// Note: This block is automatically closed, so calling
/// <see cref="FluentRenderTreeBuilder.Close(bool, int)">Close(...)</see> is unnecessary.
/// </remarks>
/// <param name="frtb">The <see cref="FluentRenderTreeBuilder"/>.</param>
/// <param name="level">The heading level, e.g. <c>1</c>, <c>2</c>, <c>3</c>, etc.</param>
/// <param name="markup">The markup content to add in the heading block.</param>
/// <param name="class">The optional CSS class name.</param>
/// <param name="id">The optional id attribute value.</param>
/// <param name="line">The source code line number used to generate the sequence number.</param>
public static FluentRenderTreeBuilder Heading(this FluentRenderTreeBuilder frtb, int level,
object markup, string? @class = null, string?id = null,
[CallerLineNumber] int line = 0)
=> frtb.Element($"h{level}", markup, @class, id, line: line);
/// <summary>
/// Adds a CSS <c>class</c> attribute.
/// </summary>
/// <remarks>
/// Passing in a null or empty <paramref name="name"/> results in no attribute being generated.
/// </remarks>
/// <param name="frtb">The <see cref="FluentRenderTreeBuilder"/>.</param>
/// <param name="name">The class name.</param>
/// <param name="line">The source code line number used to generate the sequence number.</param>
public static FluentRenderTreeBuilder Class(this FluentRenderTreeBuilder frtb, string?name,
[CallerLineNumber] int line = 0)
=> string.IsNullOrEmpty(name) ? frtb : frtb.Attribute("class", name, line);
/// <summary>
/// Adds an <c>id</c> attribute.
/// </summary>
/// <remarks>
/// Passing in a null or empty <paramref name="value"/> results in no attribute being generated.
/// </remarks>
/// <param name="frtb">The <see cref="FluentRenderTreeBuilder"/>.</param>
/// <param name="value">The id value.</param>
/// <param name="line">The source code line number used to generate the sequence number.</param>
public static FluentRenderTreeBuilder Id(this FluentRenderTreeBuilder frtb, string?value,
[CallerLineNumber] int line = 0)
=> string.IsNullOrEmpty(value) ? frtb : frtb.Attribute("id", value, line);
/// <summary>
/// Generates a <c><div></c> block containing the given content, adding the given id
/// and CSS class attributes to the <c><div></c> and setting its key, if provided.
/// </summary>
/// <remarks>
/// Note: This block is automatically closed, so calling
/// <see cref="FluentRenderTreeBuilder.Close(bool, int)">Close(...)</see> is unnecessary.
/// </remarks>
/// <param name="frtb">The <see cref="FluentRenderTreeBuilder"/>.</param>
/// <param name="fragment">The <see cref="RenderFragment"/> to add.</param>
/// <param name="class">The optional CSS class name.</param>
/// <param name="id">The optional id attribute value.</param>
/// <param name="key">The optional key to set for this element.</param>
/// <param name="prettyPrint"><c>false</c> to prevent insertion of newline and indent
/// whitespace before the markup for this element, even if
/// <see cref="FluentRenderTreeBuilder.PrettyPrinting"/> is enabled.</param>
/// <param name="line">The source code line number used to generate the sequence number.</param>
public static FluentRenderTreeBuilder ContentDiv(this FluentRenderTreeBuilder frtb,
RenderFragment fragment, string? @class = null, string?id = null, object?key = null,
bool prettyPrint = true, [CallerLineNumber] int line = 0)
=> frtb.ContentElement("div", fragment, @class, id, key, prettyPrint, line);
/// <summary>
/// Generates a <c><div></c> block containing the given markup, adding the given id
/// and CSS class attributes to the <c><div></c> and setting its key, if provided.
/// </summary>
/// <param name="frtb">The <see cref="FluentRenderTreeBuilder"/>.</param>
/// <param name="markup">The markup content to add in the <c><div></c> block.</param>
/// <param name="class">The optional CSS class name.</param>
/// <param name="id">The optional id attribute value.</param>
/// <param name="key">The optional key to set for this element.</param>
/// <param name="prettyPrint"><c>false</c> to prevent insertion of newline and indent
/// whitespace before the markup for this element, even if
/// <see cref="FluentRenderTreeBuilder.PrettyPrinting"/> is enabled.</param>
/// <param name="line">The source code line number used to generate the sequence number.</param>
public static FluentRenderTreeBuilder Div(this FluentRenderTreeBuilder frtb,
object markup, string? @class = null, string?id = null, object?key = null,
bool prettyPrint = true, [CallerLineNumber] int line = 0)
=> frtb.Element("div", markup, @class, id, key, prettyPrint, line);
.CloseHelper(l => frtb.Close(2, line: l)); // li, ul
/// <summary>
/// Opens a <c><ol></c> block, adding the given id and CSS class attributes if
/// provided.
/// </summary>
/// <remarks>
/// Note: Each call to this method must be matched with a call to
/// <see cref="FluentRenderTreeBuilder.Close(int, bool, int)">Close(...)</see>.
/// </remarks>
/// <param name="frtb">The <see cref="FluentRenderTreeBuilder"/>.</param>
/// <param name="class">The optional CSS class name for the list.</param>
/// <param name="id">The optional id attribute value.</param>
/// <param name="line">The source code line number used to generate the sequence number.</param>
public static FluentRenderTreeBuilder OpenOrderedList(this FluentRenderTreeBuilder frtb,
string? @class = null, string?id = null, [CallerLineNumber] int line = 0)
=> frtb.OpenElement("ol", @class, id, line: line);
/// <summary>
/// Opens a <c><table></c> block, adding the given id and CSS class attributes if
/// provided.
/// </summary>
/// <remarks>
/// Note: Each call to this method must be matched with a call to
/// <see cref="FluentRenderTreeBuilder.Close(int, bool, int)">Close(...)</see>.
/// </remarks>
/// <param name="frtb">The <see cref="FluentRenderTreeBuilder"/>.</param>
/// <param name="class">The optional CSS class name for the table.</param>
/// <param name="id">The optional id attribute value.</param>
/// <param name="line">The source code line number used to generate the sequence number.</param>
public static FluentRenderTreeBuilder OpenTable(this FluentRenderTreeBuilder frtb,
string? @class = "table", string?id = null, [CallerLineNumber] int line = 0)
=> frtb.OpenElement("table", @class, id, line: line);
/// <summary>
/// Generates an <c><h6></c> block containing the given markup, adding the given id
/// and CSS class attributes to the heading, if provided.
/// </summary>
/// <remarks>
/// Note: This block is automatically closed, so calling
/// <see cref="FluentRenderTreeBuilder.Close(bool, int)">Close(...)</see> is unnecessary.
/// </remarks>
/// <param name="frtb">The <see cref="FluentRenderTreeBuilder"/>.</param>
/// <param name="markup">The markup content to add in the <c><h6></c> block.</param>
/// <param name="class">The optional CSS class name.</param>
/// <param name="id">The optional id attribute value.</param>
/// <param name="line">The source code line number used to generate the sequence number.</param>
public static FluentRenderTreeBuilder H6(this FluentRenderTreeBuilder frtb,
object markup, string? @class = null, string?id = null,
[CallerLineNumber] int line = 0)
=> frtb.Heading(6, markup, @class, id, line);
.CloseHelper(l => frtb.Close(2, line: l)); // tr, table
/// <summary>
/// Opens a <c><tr></c> block, adding the given CSS class attribute if provided.
/// </summary>
/// <remarks>
/// Note: Each call to this method must be matched with a call to
/// <see cref="FluentRenderTreeBuilder.Close(int, bool, int)">Close(...)</see>.
/// </remarks>
/// <param name="frtb">The <see cref="FluentRenderTreeBuilder"/>.</param>
/// <param name="class">The optional CSS class name for the table row.</param>
/// <param name="line">The source code line number used to generate the sequence number.</param>
public static FluentRenderTreeBuilder OpenRow(this FluentRenderTreeBuilder frtb,
string? @class = null, [CallerLineNumber] int line = 0)
=> frtb.OpenElement("tr", @class, line: line);
/// <summary>
/// Generates a <c><br></c> element.
/// </summary>
/// <param name="frtb">The <see cref="FluentRenderTreeBuilder"/>.</param>
/// <param name="prettyPrint"><c>false</c> to prevent insertion of newline and indent
/// whitespace before the markup for this element, even if
/// <see cref="FluentRenderTreeBuilder.PrettyPrinting"/> is enabled.</param>
/// <param name="line">The source code line number used to generate the sequence number.</param>
public static FluentRenderTreeBuilder Break(this FluentRenderTreeBuilder frtb,
bool prettyPrint = true, [CallerLineNumber] int line = 0)
=> frtb.Markup("<br />", prettyPrint, line);
/// <summary>
/// Generates a <see cref="NavLink"/> component, adding the given href, Match, CSS class
/// (defaulting to "nav-link") and ActiveClass attributes, if given; then adding a
/// <c>ChildContent</c> attribute for the given markup text.
/// </summary>
/// <param name="fluentBuilder"></param>
/// <param name="href"></param>
/// <param name="markup"></param>
/// <param name="class"></param>
/// <param name="activeClass"></param>
/// <returns></returns>
public static FluentRenderTreeBuilder NavLink(this FluentRenderTreeBuilder fluentBuilder,
string href, string markup, string? @class = null, string?activeClass = null)
=> fluentBuilder
.OpenComponent <NavLink> (@class ?? "nav-link")
.MultipleAttributes(new (string, object)[]
.CloseHelper(l => frtb.Close(2, line: l)); // li, ol
/// <summary>
/// Opens an <c><li></c> block, adding the given CSS class attribute, and setting
/// the key, if provided.
/// </summary>
/// <remarks>
/// Note: Each call to this method must be matched with a call to
/// <see cref="FluentRenderTreeBuilder.Close(int, bool, int)">Close(...)</see>.
/// </remarks>
/// <param name="frtb">The <see cref="FluentRenderTreeBuilder"/>.</param>
/// <param name="class">The optional CSS class name.</param>
/// <param name="key">The optional key to set for this list item.</param>
/// <param name="line">The source code line number used to generate the sequence number.</param>
public static FluentRenderTreeBuilder OpenItem(this FluentRenderTreeBuilder frtb,
string? @class = null, object?key = null, [CallerLineNumber] int line = 0)
=> frtb.OpenElement("li", @class, null, key: key, line: line);