I have a Wicket application which supports 10 different languages. We need
to dynamically add the current locale tag to the <html> tag like this:
<html ... xml:lang="en-US">
Using the standard WebMarkupContainer + AttributeModifier does not work; it
seems to be very difficult to change content outside of the standard body
content. Does anyone know how to add a dynamic attribute to the <html> tag?
public TemplatePage() {
WebMarkupContainer html = new WebMarkupContainer("html");
String localeCode =
LocaleUtils.languageTagForLocale(Resources.getGlobalization().getCurrentLocale());
html.add(new AttributeModifier("lang", true, new
Model(localeCode)));
html.add(new AttributeModifier("xml:lang", true, new
Model(localeCode)));
add(html);
wicket.WicketRuntimeException: Programming error: 'parent' should be a Page
or a Border implementing
IHeaderRenderer
html.WebMarkupContainer, isVisible = true, isVersioned = true]]
at
wicket.markup.html.internal.HtmlHeaderContainer.onComponentTagBody(HtmlHeaderContainer.ja
va:147)
at wicket.Component.renderComponent(Component.java:1712)
at wicket.MarkupContainer.onRender(MarkupContainer.java:932)
at wicket.Component.render(Component.java:1526)
at wicket.MarkupContainer.autoAdd(MarkupContainer.java:200)
at
wicket.markup.resolver.HtmlHeaderResolver.resolve(HtmlHeaderResolver.java:82)
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