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The framework enforces programming using Object-Oriented techniques with POJOs and provides a JSP tag library that facilitates programming web GUIs without writing HTML.

Major Features:

1. Small core:
   Aranea core consists of ca. 10 interfaces, some conventions concerning how to use them and a number of default or base implementations.
   
2. Component-oriented:
   In Aranea everything is a component and everything is reusable, the framework itself is assembled from a number of components with specific responsibilities. The framework itself is assembled from a number of components with specific responsibilities and programmer also writes the code in terms of components. The components have very simple interface which has about 4-6 methods.
   
3. Event-driven:
   The whole programming model is based on components reacting to events generated by the user. One typically doesnt have to deal with request or determine what button was pressed since the event handler just calls the appropriate listener or method.
   
4. Plain Old Java:
   The components in Aranea are pure Java objects supporting polymorphism, inheritance and encapsulation.
   
5. Explicit state management:
   Aranea component fields are persistent and framework will automatically determine component lifecycle without limiting to any scopes.
   
6. Powerful navigation:
   Aranea out-of-the-box supports the so called flows and flow nesting, which allows to create nested processes that preserve the previous process state and restore it when finished.
   
7. Type safe:
   Since there is no playing around with session attributes and no XML mappings the Java compiler is able to verify that all types and classes match and navigating between components is as easy as holding Ctrl and clicking.
   
8. Secure:
   Since components are created explicitly when needed and removed when they are needed no more there is no need to protect the controller URLs with roles or privileges.
   
9. Testable:
   Testing pure Java is as easy as it sounds, and there is no need for any J2EE containers. And since Aranea can be used with Dependency Injection containers like Spring, it makes testing even easier.
   
10. AJAX-ready:
11. Aranea supports natively both partial page updates and AJAX-enabled components like autocompletion search boxes. Aranea can also be used as a controller for a purely AJAX application.

Enhancements

• Features and Improvements:
• • TabContainerWidget can add tab-switch-listeners
  • Add FileInfo.getFileName() to return the file name without path
  • Add AJAX file upload support
  • Add JavaScript page pre/post submit event listeners
  • Divide dependencies into smaller groups (Ivy)
• Bugfixes:
• • Wrong Modal dialog position in IE (7.0)
  • StandardOverlayContainerWidget must init overlayChild first
  • AutoCompleteTextControl: on ChangeEventListener does not work
  • < ui:widgetInclude id="..." page="relativePage.jsp" / > throws NPE
  • Transition Handlers not visible to all flow containers
  • AraneaPage.event(el) should return true for checkboxes, radios
  • Allow ListWidget. SetFullPages() before ListWidget.init()
  • Safari goes to infinite switching between links