src/wlxml/extensions/edumed/edumed.js

   1 define(function(require) {
   2
   3 'use strict';
   4
   5 var _ = require('libs/underscore'),
   6     templates = {
   7         order: require('libs/text!./order.xml'),
   8         choice: require('libs/text!./choice.xml'),
   9         'choice.single': require('libs/text!./choiceSingle.xml'),
  10         'choice.true-or-false': require('libs/text!./choiceTrueOrFalse.xml'),
  11         gap: require('libs/text!./gaps.xml'),
  12         replace: require('libs/text!./replace.xml')
  13     };
  14
  15 var Item = function(node, exerciseNode) {
  16     Object.defineProperty(this, 'text', {
  17         get: function() {
  18             /* globals Node */
  19             var firstNode = node.contents()[0];
  20             if(firstNode && firstNode.nodeType === Node.TEXT_NODE) {
  21                 return firstNode.getText();
  22             }
  23             return '';
  24         }
  25     });
  26     this.node = node;
  27     this.exerciseNode = exerciseNode;
  28 };
  29 _.extend(Item.prototype, {
  30     setText: function(text) {
  31         /* globals Node */
  32         var contents = this.node.contents();
  33         if(contents.length === 1 && contents[0].nodeType === Node.TEXT_NODE) {
  34             contents[0].setText(text);
  35         } else {
  36             contents.forEach(function(childNode) {
  37                 childNode.detach();
  38             });
  39             contents.append({text: text});
  40         }
  41     },
  42     remove: function() {
  43         this.node.detach();
  44     },
  45     getAnswer: function() {
  46         var toret = parseInt(this.node.getAttr('answer'), 10);
  47         if(_.isNaN(toret)) {
  48             toret = 1;
  49         }
  50         return toret;
  51     },
  52     setAnswer: function(answer) {
  53         answer = parseInt(answer, 10);
  54         var prev = answer;
  55         if(!_.isNumber(answer)) {
  56             return;
  57         }
  58
  59         this.exerciseNode.object.getItems()
  60             .sort(function(item1, item2) {
  61                 if(item1.getAnswer() > item2.getAnswer()) {
  62                     return 1;
  63                 }
  64                 return -1;
  65             })
  66             .some(function(item) {
  67                 if(item.getAnswer() === prev && !item.node.sameNode(this.node)) {
  68                     item.node.setAttr('answer', prev+1);
  69                     prev = prev + 1;
  70                 }
  71             }.bind(this));
  72         this.node.setAttr('answer', answer);
  73
  74     }
  75 });
  76
  77 var isItemsList = function(node) {
  78     return node.is('list.orderable');
  79 };
  80
  81
  82 var extension = {wlxmlClass: {'exercise.order': {
  83     methods: {
  84         isContextRoot: function(node) {
  85             return this.object.isItemNode(node) || this.sameNode(node);
  86         },
  87         getItems: function() {
  88             var toret = [],
  89                 exerciseNode = this;
  90
  91             this.contents().some(function(node) {
  92                 if(isItemsList(node)) {
  93                     node.contents()
  94                         .filter(function(node) {
  95                             return node.is('item.answer');
  96                         })
  97                         .forEach(function(node) {
  98                             toret.push(new Item(node, exerciseNode));
  99                         });
 100                     return true;
 101                 }
 102             });
 103             return toret;
 104         },
 105         isItemNode: function(node) {
 106             var list;
 107             if(!node) {
 108                 return;
 109             }
 110             this.contents().some(function(node) {
 111                 if(isItemsList(node)) {
 112                     list = node;
 113                     return true;
 114                 }
 115             });
 116             return list && list.sameNode(node.parent());
 117         },
 118         getDescription: function() {
 119             var toret = [];
 120             this.contents().some(function(node) {
 121                 if(isItemsList(node)) {
 122                    return true;
 123                 }
 124                 toret.push(node);
 125             });
 126             return toret;
 127         }
 128     },
 129     transformations: {
 130         addItem: function(text) {
 131             var toret;
 132             this.contents().some(function(node) {
 133                 if(isItemsList(node)) {
 134                     var itemNode = this.document.createDocumentNode({tagName: 'div', attrs: {'class': 'item.answer', answer: this.object.getItems().length+1}});
 135                     toret = itemNode.append({text: text});
 136                     node.append(itemNode);
 137                     return true;
 138                 }
 139             }.bind(this));
 140             return toret;
 141         },
 142         setDescription: function(text) {
 143             this.contents().some(function(node) {
 144                 var textNode;
 145                 if(node.is('p')) {
 146                     textNode = node.contents()[0];
 147                     if(!(textNode && textNode.nodeType === Node.TEXT_NODE)) {
 148                         node.prepend({text:text});
 149                     } else {
 150                         textNode.setText(text);
 151                     }
 152                     return true;
 153                 }
 154             });
 155         }
 156     }
 157 }}};
 158
 159 var choiceMethods = {
 160     getChoiceList: function() {
 161         return this.contents()
 162             .filter(function(n) { return this.object.isChoiceList(n); }.bind(this))[0];
 163     },
 164     isChoiceList: function(node) {
 165         return node.is('list') && this.sameNode(node.parent());
 166     },
 167     isChoiceListItem: function(node) {
 168         return this.object.isChoiceList(node.parent()) && node.is('item.answer');
 169     }
 170 };
 171
 172 extension.wlxmlClass['exercise.choice'] = {
 173     transformations: {
 174         setAnswer: function(itemNode, answer) {
 175             if(!this.object.isChoiceListItem(itemNode)) {
 176                 return;
 177             }
 178             itemNode.setAttr('answer', answer ? 'true' : 'false');
 179         }
 180     },
 181     methods: choiceMethods
 182 };
 183
 184 extension.wlxmlClass['exercise.choice.single'] = {
 185     transformations: {
 186         markAsAnswer: function(itemNode) {
 187             if(!this.object.isChoiceListItem(itemNode)) {
 188                 return;
 189             }
 190             this.object.getChoiceList().contents()
 191                 .filter(function(node) { return node.is('item.answer'); })
 192                 .forEach(function(node) {
 193                     node.setAttr('answer', node.sameNode(itemNode) ? 'true' : 'false');
 194                 });
 195         }
 196     },
 197     methods: choiceMethods
 198 };
 199
 200 extension.wlxmlClass['exercise.choice.true-or-false'] = {
 201     transformations: {
 202         setAnswer: function(itemNode, answer) {
 203             if(!this.object.isChoiceListItem(itemNode)) {
 204                 return;
 205             }
 206             itemNode.setAttr('answer', answer ? 'true' : 'false');
 207         }
 208     },
 209     methods: choiceMethods
 210 };
 211
 212 extension.document = {
 213     methods: {
 214          edumedCreateExerciseNode: function(klass) {
 215             void(klass);
 216             return this.createDocumentNode(templates[klass]);
 217          }
 218     }
 219 };
 220
 221 return extension;
 222
 223 });