init

PCSurvey/PCstatic/js/plugins/jspsych-call-function.js

@@ -0,0 +1,58 @@
+/**
+ * jspsych-call-function
+ * plugin for calling an arbitrary function during a jspsych experiment
+ * Josh de Leeuw
+ *
+ * documentation: docs.jspsych.org
+ *
+ **/
+
+jsPsych.plugins['call-function'] = (function() {
+
+  var plugin = {};
+
+  plugin.info = {
+    name: 'call-function',
+    description: '',
+    parameters: {
+      func: {
+        type: jsPsych.plugins.parameterType.FUNCTION,
+        pretty_name: 'Function',
+        default: undefined,
+        description: 'Function to call'
+      },
+      async: {
+        type: jsPsych.plugins.parameterType.BOOL,
+        pretty_name: 'Asynchronous',
+        default: false,
+        description: 'Is the function call asynchronous?'
+      }
+    }
+  }
+
+  plugin.trial = function(display_element, trial) {
+    trial.post_trial_gap = 0;
+    var return_val;
+
+    if(trial.async){
+      var done = function(data){
+        return_val = data;
+        end_trial();    
+      }
+      trial.func(done);
+    } else {
+      return_val = trial.func();
+      end_trial();
+    }
+    
+    function end_trial(){
+      var trial_data = {
+        value: return_val
+      };
+  
+      jsPsych.finishTrial(trial_data);
+    }
+  };
+
+  return plugin;
+})();