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231 lines
6.7 KiB
231 lines
6.7 KiB
<?php
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/* For licensing terms, see /license.txt */
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/**
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* Script
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* @package chamilo.gradebook
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*/
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/**
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* Class to select, sort and transform object data into array data,
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* used for the general gradebook view
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* @author Bert Steppé
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* @package chamilo.gradebook
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*/
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class GradebookDataGenerator
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{
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// Sorting types constants
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const GDG_SORT_TYPE = 1;
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const GDG_SORT_NAME = 2;
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const GDG_SORT_DESCRIPTION = 4;
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const GDG_SORT_WEIGHT = 8;
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const GDG_SORT_DATE = 16;
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const GDG_SORT_ASC = 32;
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const GDG_SORT_DESC = 64;
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const GDG_SORT_ID = 128;
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private $items;
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private $evals_links;
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function GradebookDataGenerator($cats = array(), $evals = array(), $links = array()) {
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$allcats = (isset($cats) ? $cats : array());
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$allevals = (isset($evals) ? $evals : array());
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$alllinks = (isset($links) ? $links : array());
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// merge categories, evaluations and links
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$this->items = array_merge($allcats, $allevals, $alllinks);
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$this->evals_links = array_merge($allevals, $alllinks);
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}
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/**
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* Get total number of items (rows)
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*/
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public function get_total_items_count() {
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return count($this->items);
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}
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/**
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* Get actual array data
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* @return array 2-dimensional array - each array contains the elements:
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* 0: cat/eval/link object
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* 1: item name
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* 2: description
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* 3: weight
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* 4: date
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* 5: student's score (if student logged in)
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*/
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public function get_data($sorting = 0, $start = 0, $count = null, $ignore_score_color = false) {
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$status = CourseManager::get_user_in_course_status(api_get_user_id(), api_get_course_id());
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// do some checks on count, redefine if invalid value
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if (!isset($count)) {
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$count = count ($this->items) - $start;
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}
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if ($count < 0) {
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$count = 0;
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}
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$allitems = $this->items;
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// sort array
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if ($sorting & self :: GDG_SORT_TYPE) {
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usort($allitems, array('GradebookDataGenerator', 'sort_by_type'));
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} elseif ($sorting & self :: GDG_SORT_ID) {
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usort($allitems, array('GradebookDataGenerator', 'sort_by_id'));
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} elseif ($sorting & self :: GDG_SORT_NAME) {
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usort($allitems, array('GradebookDataGenerator', 'sort_by_name'));
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} elseif ($sorting & self :: GDG_SORT_DESCRIPTION) {
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usort($allitems, array('GradebookDataGenerator', 'sort_by_description'));
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} elseif ($sorting & self :: GDG_SORT_WEIGHT) {
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usort($allitems, array('GradebookDataGenerator', 'sort_by_weight'));
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} elseif ($sorting & self :: GDG_SORT_DATE) {
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//usort($allitems, array('GradebookDataGenerator', 'sort_by_date'));
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}
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if ($sorting & self :: GDG_SORT_DESC) {
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$allitems = array_reverse($allitems);
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}
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// get selected items
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$visibleitems = array_slice($allitems, $start, $count);
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//status de user in course
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$user_id = api_get_user_id();
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$course_code = api_get_course_id();
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$status_user = api_get_status_of_user_in_course($user_id, $course_code);
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// generate the data to display
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$data = array();
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foreach ($visibleitems as $item) {
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$row = array ();
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$row[] = $item;
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$row[] = $item->get_name();
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$row[] = $item->get_description();
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$row[] = $item->get_weight();
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if (api_is_allowed_to_edit(null, true)) {
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//$row[] = $this->build_date_column($item);
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}
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if (count($this->evals_links) > 0) {
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if (!api_is_allowed_to_edit() || $status_user != 1 ) {
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$row[] = $this->build_result_column($item, $ignore_score_color);
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}
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}
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$data[] = $row;
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}
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return $data;
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}
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/**
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* Returns the link to the certificate generation, if the score is enough, otherwise
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* returns an empty string. This only works with categories.
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* @param object Item
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*/
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function get_certificate_link($item) {
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if (is_a($item, 'Category')) {
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if($item->is_certificate_available(api_get_user_id())) {
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$link = '<a href="'.Security::remove_XSS($_SESSION['gradebook_dest']).'?export_certificate=1&cat='.$item->get_id().'&user='.api_get_user_id().'">'.get_lang('Certificate').'</a>';
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return $link;
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}
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}
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return '';
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}
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// Sort functions
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// Make sure to only use functions as defined in the GradebookItem interface !
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function sort_by_name($item1, $item2) {
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return api_strnatcmp($item1->get_name(), $item2->get_name());
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}
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function sort_by_id($item1, $item2) {
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return api_strnatcmp($item1->get_id(), $item2->get_id());
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}
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function sort_by_type($item1, $item2) {
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if ($item1->get_item_type() == $item2->get_item_type()) {
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return $this->sort_by_name($item1,$item2);
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} else {
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return ($item1->get_item_type() < $item2->get_item_type() ? -1 : 1);
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}
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}
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function sort_by_description($item1, $item2) {
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$result = api_strcmp($item1->get_description(), $item2->get_description());
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if ($result == 0) {
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return $this->sort_by_name($item1,$item2);
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}
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return $result;
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}
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function sort_by_weight($item1, $item2) {
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if ($item1->get_weight() == $item2->get_weight()) {
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return $this->sort_by_name($item1,$item2);
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} else {
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return ($item1->get_weight() < $item2->get_weight() ? -1 : 1);
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}
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}
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function sort_by_date($item1, $item2) {
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if(is_int($item1->get_date())) {
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$timestamp1 = $item1->get_date();
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} else {
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$date = $item1->get_date();
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if (!empty($date)) {
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$timestamp1 = api_strtotime($date);
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} else {
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$timestamp1 = null;
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}
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}
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if(is_int($item2->get_date())) {
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$timestamp2 = $item2->get_date();
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} else {
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$timestamp2 = api_strtotime($item2->get_date());
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}
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if ($timestamp1 == $timestamp2) {
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return $this->sort_by_name($item1,$item2);
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} else {
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return ($timestamp1 < $timestamp2 ? -1 : 1);
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}
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}
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// Other functions
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private function build_result_column($item, $ignore_score_color) {
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$scoredisplay = ScoreDisplay :: instance();
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$score = $item->calc_score(api_get_user_id());
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if (!empty($score)) {
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switch ($item->get_item_type()) {
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// category
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case 'C' :
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if ($score != null) {
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$displaytype = SCORE_PERCENT;
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if ($ignore_score_color) {
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$displaytype |= SCORE_IGNORE_SPLIT;
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}
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return get_lang('Total') . ' : '. $scoredisplay->display_score($score, $displaytype);
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} else {
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return '';
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}
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// evaluation and link
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case 'E' :
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case 'L' :
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$displaytype = SCORE_DIV_PERCENT;
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if ($ignore_score_color) {
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$displaytype |= SCORE_IGNORE_SPLIT;
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}
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return $scoredisplay->display_score($score, SCORE_DIV_PERCENT_WITH_CUSTOM);
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}
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}
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return null;
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}
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private function build_date_column ($item) {
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$date = $item->get_date();
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if (!isset($date) || empty($date)) {
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return '';
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} else {
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if(is_int($date)) {
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return api_convert_and_format_date($date);
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} else {
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return api_format_date($date);
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}
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}
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}
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}
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