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   1  /**
   2   * The quizbase class to provide shared functionality to Modules within Moodle.
   3   *
   4   * @module moodle-mod_quiz-quizbase
   5   */
   6  var QUIZBASENAME = 'mod_quiz-quizbase';
   7  
   8  var QUIZBASE = function() {
   9      QUIZBASE.superclass.constructor.apply(this, arguments);
  10  };
  11  
  12  /**
  13   * The coursebase class to provide shared functionality to Modules within
  14   * Moodle.
  15   *
  16   * @class M.course.coursebase
  17   * @constructor
  18   */
  19  Y.extend(QUIZBASE, Y.Base, {
  20      // Registered Modules
  21      registermodules: [],
  22  
  23      /**
  24       * Register a new Javascript Module
  25       *
  26       * @method register_module
  27       * @param {Object} The instantiated module to call functions on
  28       * @chainable
  29       */
  30      register_module: function(object) {
  31          this.registermodules.push(object);
  32  
  33          return this;
  34      },
  35  
  36      /**
  37       * Invoke the specified function in all registered modules with the given arguments
  38       *
  39       * @method invoke_function
  40       * @param {String} functionname The name of the function to call
  41       * @param {mixed} args The argument supplied to the function
  42       * @chainable
  43       */
  44      invoke_function: function(functionname, args) {
  45          var module;
  46          for (module in this.registermodules) {
  47              if (functionname in this.registermodules[module]) {
  48                  this.registermodules[module][functionname](args);
  49              }
  50          }
  51  
  52          return this;
  53      }
  54  }, {
  55      NAME: QUIZBASENAME,
  56      ATTRS: {}
  57  });
  58  
  59  // Ensure that M.course exists and that coursebase is initialised correctly
  60  M.mod_quiz = M.mod_quiz || {};
  61  M.mod_quiz.quizbase = M.mod_quiz.quizbase || new QUIZBASE();
  62  
  63  // Abstract functions that needs to be defined per format (course/format/somename/format.js)
  64  M.mod_quiz.edit = M.mod_quiz.edit || {};
  65  
  66  /**
  67   * Swap section (should be defined in format.js if requred)
  68   *
  69   * @param {YUI} Y YUI3 instance
  70   * @param {string} node1 node to swap to
  71   * @param {string} node2 node to swap with
  72   * @return {NodeList} section list
  73   */
  74  M.mod_quiz.edit.swap_sections = function(Y, node1, node2) {
  75      var CSS = {
  76          COURSECONTENT: 'mod-quiz-edit-content',
  77          SECTIONADDMENUS: 'section_add_menus'
  78      };
  79  
  80      var sectionlist = Y.Node.all('.' + CSS.COURSECONTENT + ' li.section');
  81      // Swap menus.
  82      sectionlist.item(node1).one('.' + CSS.SECTIONADDMENUS).swap(sectionlist.item(node2).one('.' + CSS.SECTIONADDMENUS));
  83  };
  84  
  85  /**
  86   * Process sections after ajax response (should be defined in format.js)
  87   * If some response is expected, we pass it over to format, as it knows better
  88   * hot to process it.
  89   *
  90   * @param {YUI} Y YUI3 instance
  91   * @param {NodeList} list of sections
  92   * @param {array} response ajax response
  93   * @param {string} sectionfrom first affected section
  94   * @param {string} sectionto last affected section
  95   * @return void
  96   */
  97  M.mod_quiz.edit.process_sections = function(Y, sectionlist, response, sectionfrom, sectionto) {
  98      var CSS = {
  99          SECTIONNAME: 'sectionname'
 100      },
 101      SELECTORS = {
 102          SECTIONLEFTSIDE: '.left .section-handle img'
 103      };
 104  
 105      if (response.action === 'move') {
 106          // If moving up swap around 'sectionfrom' and 'sectionto' so the that loop operates.
 107          if (sectionfrom > sectionto) {
 108              var temp = sectionto;
 109              sectionto = sectionfrom;
 110              sectionfrom = temp;
 111          }
 112  
 113          // Update titles and move icons in all affected sections.
 114          var ele, str, stridx, newstr;
 115  
 116          for (var i = sectionfrom; i <= sectionto; i++) {
 117              // Update section title.
 118              sectionlist.item(i).one('.' + CSS.SECTIONNAME).setContent(response.sectiontitles[i]);
 119  
 120              // Update move icon.
 121              ele = sectionlist.item(i).one(SELECTORS.SECTIONLEFTSIDE);
 122              str = ele.getAttribute('alt');
 123              stridx = str.lastIndexOf(' ');
 124              newstr = str.substr(0, stridx + 1) + i;
 125              ele.setAttribute('alt', newstr);
 126              ele.setAttribute('title', newstr); // For FireFox as 'alt' is not refreshed.
 127  
 128              // Remove the current class as section has been moved.
 129              sectionlist.item(i).removeClass('current');
 130          }
 131          // If there is a current section, apply corresponding class in order to highlight it.
 132          if (response.current !== -1) {
 133              // Add current class to the required section.
 134              sectionlist.item(response.current).addClass('current');
 135          }
 136      }
 137  };