/// <summary>
/// Creates a box. Do not pass null for the heading.
/// </summary>
/// <param name="heading">The box heading.</param>
/// <param name="childControls">The box content.</param>
/// <param name="headingLevel">The level of the box heading.</param>
/// <param name="expanded">Set to true or false if you want users to be able to expand or close the box by clicking on the heading.</param>
public Box(string heading, IEnumerable <Control> childControls, HeadingLevel headingLevel = HeadingLevel.H2, bool?expanded = null)
{
this.heading = heading;
this.headingLevel = headingLevel;
this.childControls = childControls.ToArray();
this.expanded = expanded;
}
public static string DoTitle(HeadingLevel hl, string title)
{
switch (hl)
{
case HeadingLevel.H1:
return "<h1>" + title + "</h1>";
case HeadingLevel.H2:
return "<h2>" + title + "</h2>";
case HeadingLevel.H3:
return "<h3>" + title + "</h3>";
case HeadingLevel.H4:
return "<h4>" + title + "</h4>";
default:
throw new ArgumentException("hl");
}
}
public static string DoTitle(HeadingLevel hl, string title)
{
switch (hl)
{
case HeadingLevel.H1:
return("<h1>" + title + "</h1>");
case HeadingLevel.H2:
return("<h2>" + title + "</h2>");
case HeadingLevel.H3:
return("<h3>" + title + "</h3>");
case HeadingLevel.H4:
return("<h4>" + title + "</h4>");
default:
throw new ArgumentException("hl");
}
}
public override void Process(TagHelperContext context, TagHelperOutput output)
{
if (string.IsNullOrWhiteSpace(Id))
{
throw new Exception($"{nameof(Id)} cannot be blank");
}
if (Items is null || Items.Count < 1)
{
throw new Exception($"There must be at least one item in {nameof(Items)}");
}
// Default value is H2 as per component spec - https://design-system.service.gov.uk/components/accordion/
if (!HeadingLevel.HasValue)
{
HeadingLevel = Enums.HTMLEnums.HeadingLevel.h2;
}
output.TagName = "div";
output.Attributes.Add("class", "govuk-accordion");
output.Attributes.Add("data-module", "govuk-accordion");
if (!string.IsNullOrEmpty(Id))
{
output.Attributes.Add("id", Id);
}
var i = 1;
foreach (var item in Items)
{
var headingInner = new TagBuilder("span");
headingInner.AddCssClass("govuk-accordion__section-button");
headingInner.Attributes.Add("id", $"{Id}-heading-{i}");
if (item.HeadingHTML is not null)
{
headingInner.InnerHtml.AppendHtml(item.HeadingHTML);
}
else if (item.HeadingText is not null)
{
headingInner.InnerHtml.Append(item.HeadingText);
}
var heading = new TagBuilder(HeadingLevel.ToString());
heading.AddCssClass("govuk-accordion__section-heading");
heading.InnerHtml.AppendHtml(headingInner);
var header = new TagBuilder("div");
header.AddCssClass("govuk-accordion__section-header");
header.InnerHtml.AppendHtml(heading);
var container = new TagBuilder("div");
container.AddCssClass("govuk-accordion__section");
container.InnerHtml.AppendHtml(header);
if (item.Expanded)
{
container.AddCssClass("govuk-accordion__section--expanded");
}
if (item.SummaryHTML is not null || item.SummaryText is not null)
{
var summary = new TagBuilder("div");
summary.AddCssClass("govuk-accordion__section-summary");
summary.AddCssClass("govuk-body");
summary.Attributes.Add("id", $"{Id}-summary-{i}");
if (item.SummaryHTML is not null)
{
summary.InnerHtml.AppendHtml(item.SummaryHTML);
}
else if (item.SummaryText is not null)
{
summary.InnerHtml.Append(item.SummaryText);
}
header.InnerHtml.AppendHtml(summary);
}
var content = new TagBuilder("div");
content.AddCssClass("govuk-accordion__section-content");
content.Attributes.Add("id", $"{Id}-content-{i}");
content.Attributes.Add("aria-labelledby", $"{Id}-heading-{i}");
if (item.ContentHTML is not null)
{
content.InnerHtml.AppendHtml(item.ContentHTML);
}
else if (item.ContentText is not null)
{
content.InnerHtml.Append(item.ContentText);
}
container.InnerHtml.AppendHtml(content);
output.Content.AppendHtml(container);
i++;
}
}
public Heading(HeadingLevel level)
{
HeadingLevel = level;
}
public Heading(HeadingLevel level, string content, IMarkdown markdown) : base(content, markdown)
{
HeadingLevel = level;
}
public Heading(HeadingLevel level, string content)
{
HeadingLevel = level;
Content = content;
}
public Heading()
{
Level = HeadingLevel.H2;
}
public static void SetHeadingLevel(BindableObject view, HeadingLevel value) => view.SetValue(HeadingLevelProperty, value);
public Heading(HeadingLevel level, string content)
{
this.Level = level;
this.Controls.Add(new TextControl(content));
}
public Heading(HeadingLevel level)
: this(level, null)
{
}
