Revision 603539

Initial commit of Shindig Gadget Container JavaScript and Gadget Server.

Includes:

  * Gadget Container JavaScript. Code embedded into an arbitrary web page
    enabling it to render and manage Gadgets.
    + Support for rendering using gmodules.com or a Shindig Gadget Server
    + Basic IFPC (gadget <-> container communication) support via inclusion
      of Google IFPC library
    + Simple layout management: render in DIV (StaticLayoutManager);
      render multiple Gadgets left-aligned in DIV (FloatLeftLayoutManager)
    + UserPrefs support through JS interface
    + Cookie-based UserPrefs implementation
    + _IG_SetTitle container-side support
    + _IG_AdjustIframeHeight container-side support
    + Sample pages demonstrating all the above functionality

  * Gadget Server (written in Java). Web server that processes Gadget
    requests, parsing their spec XML, processing it through a workflow
    of core and extension (<Require>/<Optional>) Features, and serializing
    output for rendering the Gadget to the end user.
    + Core server implementation constructing processing workflows out of
      GadgetFeature objects providing various feature support
    + GadgetFeature interface providing core extensibility mechanism for
      the Gadgets platform; extenders implement GadgetFeature and register
      their implementation with GadgetFeatureRegistry
    + Gadget spec XML parser
    + Simple caching API with in-memory Map-based implementations as samples
    + Remote content (eg. HTTP) fetcher interface
    + Basic java.net-based RemoteContentFetcher implementation
    + "Hangman" variable substitution support (eg. __MSG_foo__), including BIDI,
      MSG (message bundles) and UP (user prefs) type variables
    + Early JavaScript-based Feature support through JsLibrary* classes
    + Content proxy including JSON support

  * A handful of tests for various Server components.

  * Maven build support.

This submission represents significant contributions by:
  fargo@google.com, etnu@google.com, dharkness@google.com,
  jyang@google.com, wangz@google.com, dcoker@google.com

Much more to come!