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| 1 | <?php |
| 2 | |
| 3 | /* |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; under version 2 |
| 7 | * of the License (non-upgradable). |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | * GNU General Public License for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License |
| 15 | * along with this program; if not, write to the Free Software |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 17 | * |
| 18 | * Copyright (c) 2013 (original work) Open Assessment Technologies SA (under the project TAO-PRODUCT); |
| 19 | * |
| 20 | * |
| 21 | */ |
| 22 | |
| 23 | namespace oat\taoQtiItem\model\qti\interaction; |
| 24 | |
| 25 | use oat\taoQtiItem\model\qti\Element; |
| 26 | use oat\taoQtiItem\model\qti\interaction\MatchInteraction; |
| 27 | use oat\taoQtiItem\model\qti\interaction\BlockInteraction; |
| 28 | use oat\taoQtiItem\model\qti\Item; |
| 29 | use oat\taoQtiItem\model\qti\IdentifierCollection; |
| 30 | use oat\taoQtiItem\model\qti\choice\Choice; |
| 31 | use common_Logger; |
| 32 | |
| 33 | /** |
| 34 | * QTI Match Interaction |
| 35 | * |
| 36 | * @access public |
| 37 | * @author Sam, <sam@taotesting.com> |
| 38 | * @package taoQTI |
| 39 | * @see http://www.imsglobal.org/question/qtiv2p1/imsqti_infov2p1.html#element10291 |
| 40 | |
| 41 | */ |
| 42 | class MatchInteraction extends BlockInteraction |
| 43 | { |
| 44 | /** |
| 45 | * the QTI tag name as defined in QTI standard |
| 46 | * |
| 47 | * @access protected |
| 48 | * @var string |
| 49 | */ |
| 50 | protected static $qtiTagName = 'matchInteraction'; |
| 51 | protected static $choiceClass = 'oat\\taoQtiItem\\model\\qti\\choice\\SimpleAssociableChoice'; |
| 52 | protected static $baseType = 'directedPair'; |
| 53 | |
| 54 | public function __construct($attributes = [], Item $relatedItem = null, $serial = '') |
| 55 | { |
| 56 | parent::__construct($attributes, $relatedItem, $serial); |
| 57 | |
| 58 | //init the two matchSets: a double array |
| 59 | $this->choices = [[], []]; |
| 60 | } |
| 61 | |
| 62 | public function getIdentifiedElements() |
| 63 | { |
| 64 | |
| 65 | $returnValue = new IdentifierCollection(); |
| 66 | $returnValue->addMultiple($this->getChoices(0)); |
| 67 | $returnValue->addMultiple($this->getChoices(1)); |
| 68 | |
| 69 | return $returnValue; |
| 70 | } |
| 71 | |
| 72 | protected function getUsedAttributes() |
| 73 | { |
| 74 | return array_merge( |
| 75 | parent::getUsedAttributes(), |
| 76 | [ |
| 77 | 'oat\\taoQtiItem\\model\\qti\\attribute\\Shuffle', |
| 78 | 'oat\\taoQtiItem\\model\\qti\\attribute\\MaxAssociations', |
| 79 | 'oat\\taoQtiItem\\model\\qti\\attribute\\MinAssociations' |
| 80 | ] |
| 81 | ); |
| 82 | } |
| 83 | |
| 84 | public function getChoiceBySerial($serial) |
| 85 | { |
| 86 | |
| 87 | $returnValue = null; |
| 88 | |
| 89 | for ($i = 0; $i < 2; $i++) { |
| 90 | $matchSet = $this->getChoices($i); |
| 91 | if (isset($matchSet[$serial])) { |
| 92 | $returnValue = $matchSet[$serial]; |
| 93 | break; |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | return $returnValue; |
| 98 | } |
| 99 | |
| 100 | private function isValidMatchSetNumber($setNumber) |
| 101 | { |
| 102 | |
| 103 | $returnValue = false; |
| 104 | |
| 105 | if (is_int($setNumber)) { |
| 106 | if ($setNumber === 0 || $setNumber === 1) { |
| 107 | $returnValue = true; |
| 108 | } |
| 109 | } |
| 110 | if (!$returnValue) { |
| 111 | common_Logger::w($setNumber); |
| 112 | throw new InvalidArgumentException( |
| 113 | 'For match interactions, the match set number must be either "(int) 0" or "(int) 1"' |
| 114 | ); |
| 115 | } |
| 116 | |
| 117 | return $returnValue; |
| 118 | } |
| 119 | |
| 120 | public function getChoices($setNumber = null) |
| 121 | { |
| 122 | |
| 123 | $returnValue = []; |
| 124 | |
| 125 | if ($this->isValidMatchSetNumber($setNumber)) { |
| 126 | $returnValue = $this->choices[$setNumber]; |
| 127 | } else { |
| 128 | $returnValue = $this->choices; |
| 129 | } |
| 130 | |
| 131 | return $returnValue; |
| 132 | } |
| 133 | |
| 134 | public function addChoice(Choice $choice, $setNumber = null) |
| 135 | { |
| 136 | |
| 137 | $returnValue = false; |
| 138 | |
| 139 | if ($this->isValidMatchSetNumber($setNumber)) { |
| 140 | if (!empty(static::$choiceClass) && get_class($choice) == static::$choiceClass) { |
| 141 | $this->choices[$setNumber][$choice->getSerial()] = $choice; |
| 142 | $relatedItem = $this->getRelatedItem(); |
| 143 | if (!is_null($relatedItem)) { |
| 144 | $choice->setRelatedItem($relatedItem); |
| 145 | } |
| 146 | $returnValue = true; |
| 147 | } else { |
| 148 | throw new InvalidArgumentException('Wrong type of choice in argument: ' . static::$choiceClass); |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | return $returnValue; |
| 153 | } |
| 154 | |
| 155 | /** |
| 156 | * |
| 157 | * @return oat\taoQtiItem\model\qti\choice\Choice |
| 158 | */ |
| 159 | public function createChoice($choiceAttributes = [], $choiceValue = null, $setNumber = null) |
| 160 | { |
| 161 | |
| 162 | $returnValue = null; |
| 163 | |
| 164 | if ($this->isValidMatchSetNumber($setNumber)) { |
| 165 | if ( |
| 166 | !empty(static::$choiceClass) |
| 167 | && is_subclass_of(static::$choiceClass, 'oat\\taoQtiItem\\model\\qti\\choice\\Choice') |
| 168 | ) { |
| 169 | $returnValue = new static::$choiceClass($choiceAttributes, $choiceValue); |
| 170 | $this->addChoice($returnValue, $setNumber); |
| 171 | } |
| 172 | } |
| 173 | |
| 174 | return $returnValue; |
| 175 | } |
| 176 | |
| 177 | public function removeChoice(Choice $choice, $setNumber = null) |
| 178 | { |
| 179 | if (!is_null($setNumber) && isset($this->choices[$setNumber])) { |
| 180 | unset($this->choices[$setNumber][$choice->getSerial()]); |
| 181 | } else { |
| 182 | for ($i = 0; $i < 2; $i++) { |
| 183 | $this->removeChoice($choice, $i); |
| 184 | } |
| 185 | } |
| 186 | } |
| 187 | |
| 188 | public function getComposingElements($className = '') |
| 189 | { |
| 190 | if ($className === '') { |
| 191 | $className = 'oat\taoQtiItem\model\qti\Element'; |
| 192 | } |
| 193 | $returnValue = parent::getComposingElements($className); |
| 194 | //for matchInteraction choices is not an array of Element but an array of array of Element |
| 195 | foreach ($this->getChoices(0) as $choice) { |
| 196 | if ($choice instanceof Element) { |
| 197 | if ($choice instanceof $className) { |
| 198 | $returnValue[$choice->getSerial()] = $choice; |
| 199 | } |
| 200 | $returnValue = array_merge($returnValue, $choice->getComposingElements($className)); |
| 201 | } |
| 202 | } |
| 203 | |
| 204 | foreach ($this->getChoices(1) as $choice) { |
| 205 | if ($choice instanceof Element) { |
| 206 | if ($choice instanceof $className) { |
| 207 | $returnValue[$choice->getSerial()] = $choice; |
| 208 | } |
| 209 | $returnValue = array_merge($returnValue, $choice->getComposingElements($className)); |
| 210 | } |
| 211 | } |
| 212 | |
| 213 | return $returnValue; |
| 214 | } |
| 215 | |
| 216 | public function toArray($filterVariableContent = false, &$filtered = []) |
| 217 | { |
| 218 | |
| 219 | //need to reimplent it because there are two match choice sets |
| 220 | $data = [ |
| 221 | 'serial' => $this->getSerial(), |
| 222 | 'qtiClass' => $this->getQtiTag(), |
| 223 | 'attributes' => $this->getAttributeValues(), |
| 224 | 'prompt' => $this->getPrompt()->toArray($filterVariableContent, $filtered), |
| 225 | 'choices' => [ |
| 226 | $this->getArraySerializedElementCollection($this->getChoices(0), $filterVariableContent, $filtered), |
| 227 | $this->getArraySerializedElementCollection($this->getChoices(1), $filterVariableContent, $filtered) |
| 228 | ] |
| 229 | ]; |
| 230 | |
| 231 | return $data; |
| 232 | } |
| 233 | |
| 234 | protected function getTemplateQtiVariables() |
| 235 | { |
| 236 | |
| 237 | //need to reimplent it because there are two match choice sets |
| 238 | $variables = [ |
| 239 | 'tag' => static::$qtiTagName, |
| 240 | 'attributes' => $this->getAttributeValues(), |
| 241 | 'prompt' => $this->prompt->toQTI() |
| 242 | ]; |
| 243 | unset($variables['attributes']['identifier']); |
| 244 | |
| 245 | if (trim($this->getPrompt()->getBody()) !== '') { |
| 246 | //prompt is optional: |
| 247 | $variables['prompt'] = $this->prompt->toQTI(); |
| 248 | } |
| 249 | |
| 250 | $choices = ''; |
| 251 | for ($i = 0; $i < 2; $i++) { |
| 252 | $choices .= '<simpleMatchSet>'; |
| 253 | foreach ($this->getChoices($i) as $choice) { |
| 254 | $choices .= $choice->toQTI(); |
| 255 | } |
| 256 | $choices .= '</simpleMatchSet>'; |
| 257 | } |
| 258 | |
| 259 | $variables['choices'] = $choices; |
| 260 | |
| 261 | return $variables; |
| 262 | } |
| 263 | } |