Package org.apache.juneau.bean.html5

Class Colgroup

java.lang.Object

org.apache.juneau.bean.html5.HtmlElement<SELF>

org.apache.juneau.bean.html5.HtmlElementContainer<Colgroup>

org.apache.juneau.bean.html5.Colgroup

@Marshalled(typeName="colgroup")
public class Colgroup
extends HtmlElementContainer<Colgroup>

DTO for an HTML <colgroup> element.

The colgroup element represents a group of one or more columns in a table. It is used to define structural columns and can specify attributes that apply to all cells in those columns. The colgroup element can contain col elements to define individual columns, or it can use the span attribute to define a group of columns without explicitly listing each one. This element is typically placed immediately after the opening table tag and before any thead, tbody, or tr elements.

Examples:

import static org.apache.juneau.bean.html5.HtmlBuilder.*; // Simple column group Colgroup simple = colgroup(); // Column group with span Colgroup withSpan = colgroup().span(3); // Column group with individual columns Colgroup withColumns = colgroup( col().span(2), col().span(1) ); // Column group with styling Colgroup styled = colgroup() .class_("header-columns") .style("background-color: #f0f0f0;"); // Column group with multiple columns Colgroup multiple = colgroup( col().class_("name-column").style("width: 200px;"), col().class_("age-column").style("width: 100px;"), col().class_("city-column").style("width: 150px;") ); // Column group with alignment Colgroup aligned = colgroup( col().style("text-align: left;"), col().style("text-align: center;"), col().style("text-align: right;") ); // Column group with ID Colgroup withId = colgroup() .id("data-columns") .span(4);

The following convenience methods are provided for constructing instances of this bean:

• HtmlBuilder
  • colgroup()
  • colgroup(Object...)

See Also:

• juneau-bean-html5

Constructor Summary

Constructors

Constructor	Description
Colgroup()	Creates an empty Colgroup element.
Colgroup(Object... children)	Creates a Colgroup element with the specified child nodes.

Method Summary

Modifier and Type	Method	Description
Colgroup	span(Object value)	span attribute.

Methods inherited from class org.apache.juneau.bean.html5.HtmlElementContainer

child, children, getChild, getChild, getChild, getChildren, setChildren

Methods inherited from class org.apache.juneau.bean.html5.HtmlElement

accesskey, attr, attrUri, class_, contenteditable, deminimize, dir, getAttr, getAttr, getAttrs, hidden, id, lang, onabort, onblur, oncancel, oncanplay, oncanplaythrough, onchange, onclick, oncuechange, ondblclick, ondurationchange, onemptied, onended, onerror, onfocus, oninput, oninvalid, onkeydown, onkeypress, onkeyup, onload, onloadeddata, onloadedmetadata, onloadstart, onmousedown, onmouseenter, onmouseleave, onmousemove, onmouseout, onmouseover, onmouseup, onmousewheel, onpause, onplay, onplaying, onprogress, onratechange, onreset, onresize, onscroll, onseeked, onseeking, onselect, onshow, onstalled, onsubmit, onsuspend, ontimeupdate, ontoggle, onvolumechange, onwaiting, self, setAttrs, spellcheck, style, tabindex, title, toString, translate

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

Colgroup

public Colgroup()

Creates an empty Colgroup element.

Colgroup

public Colgroup(Object... children)

Creates a Colgroup element with the specified child nodes.

Parameters:

children - The child nodes. Must not be null.

Method Details

span

public Colgroup span(Object value)

span attribute.

Number of columns spanned by the element.

Parameters:

value - The new value for this attribute. Typically a Number or String. Can be null to unset the attribute.

Returns:

This object.