/*************************************************************************************** 10 Questions Management - The user's interaction-data is stored in an object that is available until the browser is closed or a reload is triggered. - The object that stores interaction-data is initialized the first time and only once when the user opens the start-page (index.html). - When a question-page is opened it is MANDATORY to register the page in the "onLoad" handler of the body-tag. Sample: @copyright: Crealogix AG @author: Christoph Künzler @version: 1.0 / 2006-08-28 ***************************************************************************************/ // INITIALIZE --------------------------------------------------------------------------- function checkInteractionDataObject() { if (!parent.test10questions) { parent.test10questions = new InteractionResults(); } return parent.test10questions; } var interactionResults = checkInteractionDataObject(); // CLASS InteractionResults ------------------------------------------------------------- function InteractionResults() { // properties this.interactions = new Array(); this.actualID; this.oneOrMoreAnswered = false; // methods this.register = registerInteraction; this.setResponse = setLearnerResponse; this.getResponse = getLearnerResponse; this.atLeastOneAnswered = getOneOrMoreAnswered; this.getResult = getLearnerResult; } function registerInteraction(id, type, correct_responses, weighting) { // avoid duplicates if (!this.interactions[id]) { if (type == "choice") { this.interactions[id] = new InteractionChoice(id, type, correct_responses, weighting); } } this.actualID = id; } function setLearnerResponse(learner_response) { if (!this.actualID) return; if (this.interactions[this.actualID]) { this.interactions[this.actualID].evaluate(learner_response); this.oneOrMoreAnswered = true; } } function getLearnerResponse() { if (!this.actualID) return; if (this.interactions[this.actualID]) { return this.interactions[this.actualID].learner_response; } else return null; } function getOneOrMoreAnswered() { return this.oneOrMoreAnswered; } function getLearnerResult(id) { if (this.interactions[id]) { return this.interactions[id].result; } return null; } // CLASS Interaction --------------------------------------------------------------------- function Interaction() { // properties this.id; this.type; this.correct_responses; this.weighting; this.learner_response; this.result; // methods this.initialize = initializeInteraction; } function initializeInteraction(id, type, correct_responses, weighting) { this.id = id; this.type = type; this.correct_responses = correct_responses; this.weighting = weighting; } // CLASS InteractionChoice (subclass of Interaction) ------------------------------------ function InteractionChoice(id, type, correct_responses, weighting) { this.initialize(id, type, correct_responses, weighting); // methods this.evaluate = evaluateLearnerResponse; } InteractionChoice.prototype = new Interaction; function evaluateLearnerResponse(learner_response) { this.learner_response = learner_response; this.result = (this.learner_response == this.correct_responses); } // HELPERS FOR RADIO BUTTONS ------------------------------------------------------------ function setChoiceResponse(radioGroup) { var learner_response = ""; for (var i=0; i