Hi!
I’m writing a mobile web interface using wicket. Since there are mobile
devices with various screen resolutions, I need to maintain separate set of
htmls (per component class) based on category/resolution. I’m able to define
custom place for htmls (thanks to
http://cwiki.apache.org/WICKET/control-where-html-files-are-loaded-from.html
), but having problem with locating correct file at runtime. Wicket is
invoking locate(Class clazz, String path) of my custom ResourceStreamLocator
for the 1st time only. Then, I assume, its remembering the file path or
stream and always showing htmls for the 1st requesting device category! Is
there any way (a hack may be!) to instruct/force wicket to invoke locate(…)
everytime a request comes?
Below a snippet of my current implementation:
public class MyWebApplication extends WebApplication {
…
protected void init() {
IResourceSettings resourceSettings =
getResourceSettings();
resourceSettings.setResourceStreamLocator(new
MyResourceLocator());
}
}
public class MyResourceLocator extends ResourceStreamLocator {
…
public IResourceStream locate(final Class clazz, final String path) {
MySession session = MySession.get();
IResourceStream located = locateByClassLoader(clazz,
getHtmlPath(path, session.getDevice()));
return located;
}
private String getHtmlPath(String path, PlainDevice d) {
if (<category-1>) {
return <category-1-folder-path> +
path.substring(path.lastIndexOf("/") + 1);
} else {
return <category-2-folder-path> +
path.substring(path.lastIndexOf("/") + 1);
}
}
protected IResourceStream locateByClassLoader(final Class clazz,
final String path) {
ClassLoader classLoader = null;
if (classLoader == null) {
// use context classloader when no specific classloader is set
// (package resources for instance)
classLoader = Thread.currentThread().getContextClassLoader();
}
if (clazz != null) {
classLoader = clazz.getClassLoader();
}
if (classLoader == null) {
// use Wicket classloader when no specific classloader is set
classLoader = getClass().getClassLoader();
}
logger.debug("path : " + path);
// Try loading path using classloader
final URL url = classLoader.getResource(path);
if (url != null) {
return new UrlResourceStream(url);
}
return null;
}
}
/Anirban
