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Differences Between: [Versions 310 and 401] [Versions 311 and 401] [Versions 39 and 401]

   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle 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 Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * Helper class to fetch information about component grade items.
  19   *
  20   * @package   core_grades
  21   * @copyright Andrew Nicols <andrew@nicols.co.uk>
  22   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  declare(strict_types = 1);
  26  
  27  namespace core_grades;
  28  
  29  use code_grades\local\gradeitem\itemnumber_mapping;
  30  use code_grades\local\gradeitem\advancedgrading_mapping;
  31  
  32  /**
  33   * Helper class to fetch information about component grade items.
  34   *
  35   * @package   core_grades
  36   * @copyright Andrew Nicols <andrew@nicols.co.uk>
  37   * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  38   */
  39  class component_gradeitems {
  40  
  41      /**
  42       * Get the gradeitems classname for the specific component.
  43       *
  44       * @param string $component The component to fetch the classname for
  45       * @return string The composed classname
  46       */
  47      protected static function get_component_classname(string $component): string {
  48          return "{$component}\\grades\gradeitems";
  49      }
  50  
  51      /**
  52       * Get the grade itemnumber mapping for a component.
  53       *
  54       * @param string $component The component that the grade item belongs to
  55       * @return array
  56       */
  57      public static function get_itemname_mapping_for_component(string $component): array {
  58          $classname = "{$component}\\grades\gradeitems";
  59  
  60          if (!class_exists($classname)) {
  61              return [
  62                  0 => '',
  63              ];
  64          }
  65  
  66          if (!is_subclass_of($classname, 'core_grades\local\gradeitem\itemnumber_mapping')) {
  67              throw new \coding_exception("The {$classname} class does not implement " . itemnumber_mapping::class);
  68          }
  69  
  70          return $classname::get_itemname_mapping_for_component();
  71      }
  72  
  73      /**
  74       * Whether the named grading item exists.
  75       *
  76       * @param string $component
  77       * @param string $itemname
  78       * @return bool
  79       */
  80      public static function is_valid_itemname(string $component, string $itemname): bool {
  81          $items = self::get_itemname_mapping_for_component($component);
  82  
  83          return array_search($itemname, $items) !== false;
  84      }
  85  
  86      /**
  87       * Check whether the component class defines the advanced grading items.
  88       *
  89       * @param string $component The component to check
  90       * @return bool
  91       */
  92      public static function defines_advancedgrading_itemnames_for_component(string $component): bool {
  93          return is_subclass_of(self::get_component_classname($component), 'core_grades\local\gradeitem\advancedgrading_mapping');
  94      }
  95  
  96      /**
  97       * Get the list of advanced grading item names for the named component.
  98       *
  99       * @param string $component
 100       * @return array
 101       */
 102      public static function get_advancedgrading_itemnames_for_component(string $component): array {
 103          $classname = self::get_component_classname($component);
 104          if (!self::defines_advancedgrading_itemnames_for_component($component)) {
 105              throw new \coding_exception("The {$classname} class does not implement " . advancedgrading_mapping::class);
 106          }
 107  
 108          return $classname::get_advancedgrading_itemnames();
 109      }
 110  
 111      /**
 112       * Whether the named grading item name supports advanced grading.
 113       *
 114       * @param string $component
 115       * @param string $itemname
 116       * @return bool
 117       */
 118      public static function is_advancedgrading_itemname(string $component, string $itemname): bool {
 119          $gradingareas = self::get_advancedgrading_itemnames_for_component($component);
 120  
 121          return array_search($itemname, $gradingareas) !== false;
 122      }
 123  
 124      /**
 125       * Get the suffixed field name for an activity field mapped from its itemnumber.
 126       *
 127       * For legacy reasons, the first itemnumber has no suffix on field names.
 128       *
 129       * @param string $component The component that the grade item belongs to
 130       * @param int $itemnumber The grade itemnumber
 131       * @param string $fieldname The name of the field to be rewritten
 132       * @return string The translated field name
 133       */
 134      public static function get_field_name_for_itemnumber(string $component, int $itemnumber, string $fieldname): string {
 135  
 136          $classname = "{$component}\grades\gradeitems";
 137  
 138          if (class_exists($classname) && is_subclass_of($classname, 'core_grades\local\gradeitem\fieldname_mapping')) {
 139              $fieldname = $classname::get_field_name_for_itemnumber($component, $itemnumber, $fieldname);
 140          } else {
 141              $itemname = static::get_itemname_from_itemnumber($component, $itemnumber);
 142  
 143              if ($itemname) {
 144                  $fieldname .= '_' . $itemname;
 145              }
 146          }
 147          return $fieldname;
 148  
 149      }
 150  
 151      /**
 152       * Get the suffixed field name for an activity field mapped from its itemnumber.
 153       *
 154       * For legacy reasons, the first itemnumber has no suffix on field names.
 155       *
 156       * @param string $component The component that the grade item belongs to
 157       * @param string $itemname The grade itemname
 158       * @param string $fieldname The name of the field to be rewritten
 159       * @return string The translated field name
 160       */
 161      public static function get_field_name_for_itemname(string $component, string $itemname, string $fieldname): string {
 162          if (empty($itemname)) {
 163              return $fieldname;
 164          }
 165  
 166          $itemnumber = static::get_itemnumber_from_itemname($component, $itemname);
 167  
 168          if ($itemnumber > 0) {
 169              return "{$fieldname}_{$itemname}";
 170          }
 171  
 172          return $fieldname;
 173      }
 174  
 175      /**
 176       * Get the itemname for an itemnumber.
 177       *
 178       * For legacy compatability when the itemnumber is 0, the itemname will always be empty.
 179       *
 180       * @param string $component The component that the grade item belongs to
 181       * @param int $itemnumber The grade itemnumber
 182       * @return int The grade itemnumber of the itemname
 183       */
 184      public static function get_itemname_from_itemnumber(string $component, int $itemnumber): string {
 185          if ($itemnumber === 0) {
 186              return '';
 187          }
 188  
 189          $mappings = self::get_itemname_mapping_for_component($component);
 190  
 191          if (isset($mappings[$itemnumber])) {
 192              return $mappings[$itemnumber];
 193          }
 194  
 195          if ($itemnumber >= 1000) {
 196              // An itemnumber >= 1000 belongs to an outcome.
 197              return '';
 198          }
 199  
 200          throw new \coding_exception("Unknown itemnumber mapping for {$itemnumber} in {$component}");
 201      }
 202  
 203      /**
 204       * Get the itemnumber for a item name.
 205       *
 206       * For legacy compatability when the itemname is empty, the itemnumber will always be 0.
 207       *
 208       * @param string $component The component that the grade item belongs to
 209       * @param string $itemname The grade itemname
 210       * @return int The grade itemname of the itemnumber
 211       */
 212      public static function get_itemnumber_from_itemname(string $component, string $itemname): int {
 213          if (empty($itemname)) {
 214              return 0;
 215          }
 216  
 217          $mappings = self::get_itemname_mapping_for_component($component);
 218  
 219          $flipped = array_flip($mappings);
 220          if (isset($flipped[$itemname])) {
 221              return $flipped[$itemname];
 222          }
 223  
 224          throw new \coding_exception("Unknown itemnumber mapping for {$itemname} in {$component}");
 225      }
 226  }