private Task <string> GetHeaderAsync(TreeDefinition treeModel, List <TreeEntry> data, TreeSetup setup)
{
HtmlBuilder hb = new HtmlBuilder();
if (treeModel.ShowHeader)
{
PropertyData prop = ObjectSupport.GetPropertyData(treeModel.RecordType, nameof(TreeEntry.Text));
// Caption
string caption = treeModel.Header.ToString();
if (string.IsNullOrWhiteSpace(caption))
{
caption = prop.GetCaption(null);
}
// Description
string description = treeModel.HeaderTooltip.ToString();
if (string.IsNullOrWhiteSpace(description))
{
description = prop.GetDescription(null);
}
string alignCss = "tg_left";
// Render column header
hb.Append($@"
<div class='{alignCss} tg_header{(treeModel.UseSkinFormatting ? " ui-state-default" : "")}' {Basics.CssTooltip}='{HAE(description ?? "")}'>
<span>{HE(caption)}</span>
</div>");
}
return(Task.FromResult(hb.ToString()));
}