Select Class

Randomizer to allow selection of one (or arbitrary sequence) of defined frames. This is intended to be used either within a Random-parameter-set randomizer with different parameterSets picking out different values for whichFrames) or indirectly via the Exp-frame-select frame (which allows setting whichFrames using a custom generateProperties function). Note that you cannot add a generateProperties function directly to a randomizer!

To use, define a frame with "kind": "choice" and "sampler": "select", as shown below, in addition to the parameters described under 'properties'.

"frames": {
   "select-randomizer-test": {
       "sampler": "select",
       "kind": "choice",
       "whichFrames": 0,
       "commonFrameProperties": {
           "kind": "exp-lookit-text"
       },
       "frameOptions": [
           {
               "blocks": [
                   {
                       "emph": true,
                       "text": "Let's think about hippos!",
                       "title": "FRAME 1"
                   },
                   {
                       "text": "Some more about hippos..."
                   }
               ]
           },
           {
               "blocks": [
                   {
                       "emph": false,
                       "text": "Let's think about dolphins!",
                       "title": "FRAME 2"
                   }
               ]
           }
       ]
   }
}