# Package org.zkoss.zk.ui.http

- Interface Summary
  Interface | Description
  --- | ---
  ScriptManager | A manager to manage the script of WPD.
  WebManagerActivationListener | A listener that will be invoked when the Web manager is created (a.k.a., activated).

- Class Summary
  Class | Description
  --- | ---
  CspProviderImpl | An `CspProvider` implementation for Csp functions and applies.
  DesktopRecycles | Utilities to handle `DesktopRecycle`.
  DHtmlLayoutFilter | Used to post-process the response into a ZK page.
  DHtmlLayoutPortlet | The portlet used to process the request for a ZUML page.
  DHtmlLayoutServlet | Used to process the request for a ZUML page.
  ExecutionImpl | An `Execution` implementation for HTTP request and response.
  HttpSessionListener | Used to clean up desktops that a session owns.
  HttpSessionListener23 | The listener works with Servlet 2.3.
  I18Ns | Internationalization utilities.
  RichletFilter | A filter used for ZK Richlet
  ScriptManagerImpl | The default implementation of the script manager (`ScriptManager`).
  SerializableSession | Serializable `Session`.
  SerializableUiFactory | The serializable implementation of `UiFactory`.
  SessionResolverImpl | An implementation of session resolver (`SessionResolver`) based on HTTP request.
  SimpleSession | A non-serializable implementation of `Session`.
  SimpleSessionCache | A simple implementation of `SessionCache`.
  SimpleUiFactory | The default implementation of `UiFactory`.
  SimpleWebApp | A servlet-based Web application.
  Utils | A collection of utilities for this package.
  WcsExtendlet | The extendlet to handle WCS (widget CSS).
  WebManager | A bridge between Web server and ZK.
  WpdExtendlet | The extendlet to handle WPD (Widget Package Descriptor).
  Wpds | Utilities to used with WPD files.
  ZKWebSocket | A web socket util class
  ZKWebSocket.ZKPrinciple |
  ZumlExtendlet | The ZUML resource processor used to parse the ZUML files loaded from the classpath.