How to use

RequestContext

in

org.apache.wicket

public static final String encodeResourceURL(String url) {
  // if it is in portlet environment, just wrap the url in portlet resource url.
  RequestContext requestContext = RequestContext.get();
  if (requestContext.isPortletRequest()) {
    url = ((PortletRequestContext) requestContext).encodeResourceURL(url).toString();
    // use relative url (FIXME: why?)
    if (url.startsWith("http:") || url.startsWith("https:")) {
      int offset = url.indexOf('/', 8);
      if (offset != -1) {
        url = url.substring(offset);
      }
    }
  }
  return url;
}

/**
 * @return The current threads request context, will make one if there wasn't one.
 */
public static final RequestContext get()
{
  RequestContext context = (RequestContext)current.get();
  if (context == null)
  {
    context = new RequestContext();
  }
  return context;
}

/**
 * Factory method for creating header response
 * 
 * @return new header response
 */
protected IHeaderResponse newHeaderResponse()
{
  IHeaderResponse headerResponse = RequestContext.get().getHeaderResponse();
  if (headerResponse == null)
  {
    // no (portlet) headerResponse override, create a default one
    headerResponse = new HeaderResponse()
    {
      protected Response getRealResponse()
      {
        return HtmlHeaderContainer.this.getResponse();
      }
    };
  }
  return headerResponse;
}

RequestContext requestContext = RequestContext.get();
boolean portletRequest = requestContext.isPortletRequest();
boolean sharedResourceURL = false;
  url = requestContext.encodeRenderURL(url == null ? encode(requestCycle,
      (IBookmarkablePageRequestTarget)requestTarget) : url);
  url = requestContext.encodeSharedResourceURL(url == null ? encode(requestCycle,
      (ISharedResourceRequestTarget)requestTarget) : url);
  sharedResourceURL = true;
            .getDeclaringClass()))
      url = requestContext.encodeResourceURL(url);
        url = requestContext.encodeRenderURL(url);

realResponse.write("<span id=\"" + RequestContext.get().getNamespace() +
    "_embedded_head\" style=\"display:none\">");
realResponse.write(output);

markupIdPostfix = RequestContext.get().encodeMarkupId(markupIdPostfix);

  public void sendRedirect(String redirectLocation) throws IOException
  {
    RequestContext rc = RequestContext.get();
    if (rc instanceof PortletRequestContext)
    {
      String wicketUrl = ((PortletRequestContext)rc).getLastEncodedPath(redirectLocation);
      if (wicketUrl != null)
      {
        redirectLocation = wicketUrl;
      }
      else
      {
        String contextPath = ((PortletRequestContext)rc).getPortletRequest()
            .getContextPath();
        if (redirectLocation.startsWith(contextPath + "/"))
        {
          redirectLocation = redirectLocation.substring(contextPath.length());
          if (redirectLocation.length() == 0)
          {
            redirectLocation = "/";
          }
        }
      }
    }
    super.sendRedirect(redirectLocation);
  }
}

/**
 * Construct.
 */
public RequestContext()
{
  set(this);
}

RequestContext requestContext = RequestContext.get();
boolean portletRequest = requestContext.isPortletRequest();
boolean sharedResourceURL = false;
    url = requestContext.encodeRenderURL(url == null ? encode(requestCycle,
      (IBookmarkablePageRequestTarget)requestTarget) : url);
  url = requestContext.encodeSharedResourceURL(url == null ? encode(requestCycle,
    (ISharedResourceRequestTarget)requestTarget) : url);
  sharedResourceURL = true;
      IBehaviorListener.class.isAssignableFrom(rli.getMethod().getDeclaringClass()))
      url = requestContext.encodeResourceURL(url);
        url = requestContext.encodeRenderURL(url);

realResponse.write("<span id=\"" + RequestContext.get().getNamespace() +
  "_embedded_head\" style=\"display:none\">");
realResponse.write(output);

markupIdPostfix = RequestContext.get().encodeMarkupId(markupIdPostfix);

RequestContext rc = RequestContext.get();
if (rc instanceof PortletRequestContext)

/**
 * Construct.
 */
public RequestContext()
{
  set(this);
}

protected String getContextRelativeValue(String value)
{
  if ("href".equals(attribute) || "src".equals(attribute))
  {
    RequestContext rc = RequestContext.get();
    if (rc.isPortletRequest() &&
        !(value.startsWith("http://") || value.startsWith("https://")))
    {
      if ("href".equals(attribute))
      {
        value = ((PortletRequestContext)rc).encodeRenderURL(value).toString();
      }
      else
      {
        value = ((PortletRequestContext)rc).encodeSharedResourceURL(value).toString();
      }
    }
  }
  return value;
}

RequestContext requestContext = RequestContext.get();
boolean portletRequest = requestContext.isPortletRequest();
boolean sharedResourceURL = false;
    url = requestContext.encodeRenderURL(url == null ? encode(requestCycle,
      (IBookmarkablePageRequestTarget)requestTarget) : url);
  url = requestContext.encodeSharedResourceURL(url == null ? encode(requestCycle,
    (ISharedResourceRequestTarget)requestTarget) : url);
  sharedResourceURL = true;
      IBehaviorListener.class.isAssignableFrom(rli.getMethod().getDeclaringClass()))
      url = requestContext.encodeResourceURL(url);
        url = requestContext.encodeRenderURL(url);

/**
 * Factory method for creating header response
 * 
 * @return new header response
 */
protected IHeaderResponse newHeaderResponse()
{
  IHeaderResponse headerResponse = RequestContext.get().getHeaderResponse();
  if (headerResponse == null)
  {
    // no (portlet) headerResponse override, create a default one
    headerResponse = new HeaderResponse()
    {
      @Override
      protected Response getRealResponse()
      {
        return HtmlHeaderContainer.this.getResponse();
      }
    };
  }
  return headerResponse;
}

/**
 * @return The current threads request context, will make one if there wasn't one.
 */
public static final RequestContext get()
{
  RequestContext context = current.get();
  if (context == null)
  {
    context = new RequestContext();
  }
  return context;
}

/**
 * Checks if <code>value</code> represents a path and if it does transforms it into a relative
 * path
 * 
 * @param value
 * @return value as a relative path or untouched if not a path
 */
protected String getContextRelativeValue(String value)
{
  if ("href".equals(attribute) || "src".equals(attribute))
  {
    RequestContext rc = RequestContext.get();
    if (rc.isPortletRequest() &&
      !(value.startsWith("http://") || value.startsWith("https://")))
    {
      if ("href".equals(attribute))
      {
        value = ((PortletRequestContext)rc).encodeRenderURL(value).toString();
      }
      else
      {
        value = ((PortletRequestContext)rc).encodeSharedResourceURL(value).toString();
      }
    }
  }
  return value;
}

protected void createRequestContext(WebRequest request, WebResponse response)
{
  if (filterPortletContext == null ||
    !filterPortletContext.createPortletRequestContext(request, response))
  {
    new RequestContext();
  }
}

public AppendingStringBuffer filter(AppendingStringBuffer responseBuffer)
{
  RequestContext rc = RequestContext.get();
  if (rc.isPortletRequest() && ((PortletRequestContext)rc).isEmbedded())
  {
    deleteFragment(responseBuffer, "<?xml", "?>");
    deleteFragment(responseBuffer, "<!DOCTYPE", ">");
    deleteOpenTag(responseBuffer, "html");
    deleteOpenTag(responseBuffer, "head");
    deleteOpenTag(responseBuffer, "body");
  }
  return responseBuffer;
}