210 

   211 /** Go through the defaults to set a reasonable value */

   212 IriSP.configureDefaults = function(libdir, platform_url) {

   213   /* the defaults configuration is messy and complicated. There are two things to know :

   214      - we want to allow overwriting of defaults - that's why we have IriSP.widgetDefaults

   215        and IriSP.defaults.widgetDefaults. The first is filled by the embedder and then fleshed out

   216        with the contents of the first. We use underscore.defaults for that, but there's one problem with

   217        this function : it doesn't work recursively.

   218      - we need to compute some values at runtime instead of at compile time

   219   */

   220     

   221   IriSP.lib = IriSP.underscore.defaults(IriSP.lib, IriSP.defaults.lib(libdir));

   222   

   223   /* get the factory defaults for the widgets and merge them with the default the user

   224      may have defined 

   225   */

   226   var factory_defaults = IriSP.defaults.widgetsDefaults(platform_url);

   227   for(var widget in factory_defaults) {

   228   

   229       /* create the object if it doesn't exists */

   230       if (IriSP.null_or_undefined(IriSP.widgetsDefaults[widget]))

   231         IriSP.widgetsDefaults[widget] = {};

   232         

   233       IriSP.widgetsDefaults[widget] = IriSP.underscore.defaults(IriSP.widgetsDefaults[widget], factory_defaults[widget]);

   234   }

   235   

   236   IriSP.paths = IriSP.underscore.defaults(IriSP.paths, IriSP.defaults.paths);

   237   IriSP.default_templates_vars = IriSP.underscore.defaults(IriSP.default_templates_vars, 

   238                                        IriSP.defaults.default_templates_vars());

   239 };

   240 

   241 /** single point of entry for the metadataplayer */

   242 IriSP.initPlayer = function(config, metadata_url, libdir, platform_url) {

   243     IriSP.configureDefaults(libdir, platform_url);

   244     IriSP.loadLibs(IriSP.lib, config, metadata_url,

   245       function() {   

   246               

   247               var layoutManager = new IriSP.LayoutManager(config.gui);

   248 

   249               var pop = IriSP.configurePopcorn(layoutManager, config.player);

   250               

   251               var widgets = IriSP.configureWidgets(pop, layoutManager, config.gui); 

   252               var modules = IriSP.configureModules(pop, config.modules); 

   253       });

   254 };