Extensible user interface framework for a componentized application environment

A componentized application environment data processing system configured for user interface extension, comprising:

• a plurality of plug-ins defining a componentized application environment;
• and,
• a user interface framework for the componentized application environment, the user interface framework comprising:
• a plurality of control factories, each control factory comprising program code enabled to generate a user interface control having a specified type from a user interface control definition declaring the specified type;
• a plurality of widget managers, each widget manager comprising program code enabled to manage behaviors for a user interface control having a specified manager type from a user interface control definition declaring the specified manager type;
• and,
• a configurator comprising program code enabled to identify extensions to defined user interface controls, which extensions each specify a replacement of one of the defined user interface controls.

A computer program product comprising a computer usable medium embodying computer usable program code for user interface extension for a componentized application environment, the computer program product including:

• computer usable program code for specifying in markup a set of user interface controls;
• computer usable program code for further specifying in markup an extension to a user interface control in the set;
• computer usable program code for substituting the markup for user interface control with the markup for the extension;
• and,
• computer usable program code for providing the markup for the extension and the set of user interface controls absent the substituted user interface control to a set of corresponding control factories for generation into user interface control instances defining a user interface for the componentized application environment.