course/renderer.php

   1 <?php
   2
   3 // This file is part of Moodle - http://moodle.org/
   4 //
   5 // Moodle is free software: you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation, either version 3 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // Moodle is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License
  16 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 /**
  19  * Renderer for use with the course section and all the goodness that falls
  20  * within it.
  21  *
  22  * This renderer should contain methods useful to courses, and categories.
  23  *
  24  * @package   moodlecore
  25  * @copyright 2010 Sam Hemelryk
  26  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  27  */
  28
  29 /**
  30  * The core course renderer
  31  *
  32  * Can be retrieved with the following:
  33  * $renderer = $PAGE->get_renderer('core','course');
  34  */
  35 class core_course_renderer extends plugin_renderer_base {
  36
  37     /**
  38      * A cache of strings
  39      * @var stdClass
  40      */
  41     protected $strings;
  42
  43     /**
  44      * Override the constructor so that we can initialise the string cache
  45      *
  46      * @param moodle_page $page
  47      * @param string $target
  48      */
  49     public function __construct(moodle_page $page, $target) {
  50         $this->strings = new stdClass;
  51         parent::__construct($page, $target);
  52     }
  53
  54     /**
  55      * Renders course info box.
  56      *
  57      * @param stdClass $course
  58      * @return string
  59      */
  60     public function course_info_box(stdClass $course) {
  61         global $CFG;
  62
  63         $context = context_course::instance($course->id);
  64
  65         $content = '';
  66         $content .= $this->output->box_start('generalbox info');
  67
  68         $summary = file_rewrite_pluginfile_urls($course->summary, 'pluginfile.php', $context->id, 'course', 'summary', null);
  69         $content .= format_text($summary, $course->summaryformat, array('overflowdiv'=>true), $course->id);
  70         if (!empty($CFG->coursecontact)) {
  71             $coursecontactroles = explode(',', $CFG->coursecontact);
  72             foreach ($coursecontactroles as $roleid) {
  73                 if ($users = get_role_users($roleid, $context, true)) {
  74                     foreach ($users as $teacher) {
  75                         $role = new stdClass();
  76                         $role->id = $teacher->roleid;
  77                         $role->name = $teacher->rolename;
  78                         $role->shortname = $teacher->roleshortname;
  79                         $role->coursealias = $teacher->rolecoursealias;
  80                         $fullname = fullname($teacher, has_capability('moodle/site:viewfullnames', $context));
  81                         $namesarray[] = role_get_name($role, $context).': <a href="'.$CFG->wwwroot.'/user/view.php?id='.
  82                             $teacher->id.'&amp;course='.SITEID.'">'.$fullname.'</a>';
  83                     }
  84                 }
  85             }
  86
  87             if (!empty($namesarray)) {
  88                 $content .= "<ul class=\"teachers\">\n<li>";
  89                 $content .= implode('</li><li>', $namesarray);
  90                 $content .= "</li></ul>";
  91             }
  92         }
  93
  94         $content .= $this->output->box_end();
  95
  96         return $content;
  97     }
  98
  99     /**
 100      * Renderers a structured array of courses and categories into a nice
 101      * XHTML tree structure.
 102      *
 103      * This method was designed initially to display the front page course/category
 104      * combo view. The structure can be retrieved by get_course_category_tree()
 105      *
 106      * @param array $structure
 107      * @return string
 108      */
 109     public function course_category_tree(array $structure) {
 110         $this->strings->summary = get_string('summary');
 111
 112         // Generate an id and the required JS call to make this a nice widget
 113         $id = html_writer::random_id('course_category_tree');
 114         $this->page->requires->js_init_call('M.util.init_toggle_class_on_click', array($id, '.category.with_children .category_label', 'collapsed', '.category.with_children'));
 115
 116         // Start content generation
 117         $content = html_writer::start_tag('div', array('class'=>'course_category_tree', 'id'=>$id));
 118         foreach ($structure as $category) {
 119             $content .= $this->course_category_tree_category($category);
 120         }
 121         $content .= html_writer::start_tag('div', array('class'=>'controls'));
 122         $content .= html_writer::tag('div', get_string('collapseall'), array('class'=>'addtoall expandall'));
 123         $content .= html_writer::tag('div', get_string('expandall'), array('class'=>'removefromall collapseall'));
 124         $content .= html_writer::end_tag('div');
 125         $content .= html_writer::end_tag('div');
 126
 127         // Return the course category tree HTML
 128         return $content;
 129     }
 130
 131     /**
 132      * Renderers a category for use with course_category_tree
 133      *
 134      * @param array $category
 135      * @param int $depth
 136      * @return string
 137      */
 138     protected function course_category_tree_category(stdClass $category, $depth=1) {
 139         $content = '';
 140         $hassubcategories = (isset($category->categories) && count($category->categories)>0);
 141         $hascourses = (isset($category->courses) && count($category->courses)>0);
 142         $classes = array('category');
 143         if ($category->parent != 0) {
 144             $classes[] = 'subcategory';
 145         }
 146         if (empty($category->visible)) {
 147             $classes[] = 'dimmed_category';
 148         }
 149         if ($hassubcategories || $hascourses) {
 150             $classes[] = 'with_children';
 151             if ($depth > 1) {
 152                 $classes[] = 'collapsed';
 153             }
 154         }
 155         $categoryname = format_string($category->name, true, array('context' => context_coursecat::instance($category->id)));
 156
 157         $content .= html_writer::start_tag('div', array('class'=>join(' ', $classes)));
 158         $content .= html_writer::start_tag('div', array('class'=>'category_label'));
 159         $content .= html_writer::link(new moodle_url('/course/category.php', array('id'=>$category->id)), $categoryname, array('class'=>'category_link'));
 160         $content .= html_writer::end_tag('div');
 161         if ($hassubcategories) {
 162             $content .= html_writer::start_tag('div', array('class'=>'subcategories'));
 163             foreach ($category->categories as $subcategory) {
 164                 $content .= $this->course_category_tree_category($subcategory, $depth+1);
 165             }
 166             $content .= html_writer::end_tag('div');
 167         }
 168         if ($hascourses) {
 169             $content .= html_writer::start_tag('div', array('class'=>'courses'));
 170             $coursecount = 0;
 171             foreach ($category->courses as $course) {
 172                 $classes = array('course');
 173                 $linkclass = 'course_link';
 174                 if (!$course->visible) {
 175                     $linkclass .= ' dimmed';
 176                 }
 177                 $coursecount ++;
 178                 $classes[] = ($coursecount%2)?'odd':'even';
 179                 $content .= html_writer::start_tag('div', array('class'=>join(' ', $classes)));
 180                 $content .= html_writer::link(new moodle_url('/course/view.php', array('id'=>$course->id)), format_string($course->fullname), array('class'=>$linkclass));
 181                 $content .= html_writer::start_tag('div', array('class'=>'course_info clearfix'));
 182
 183                 // print enrol info
 184                 if ($icons = enrol_get_course_info_icons($course)) {
 185                     foreach ($icons as $pix_icon) {
 186                         $content .= $this->render($pix_icon);
 187                     }
 188                 }
 189
 190                 if ($course->summary) {
 191                     $image = html_writer::empty_tag('img', array('src'=>$this->output->pix_url('i/info'), 'alt'=>$this->strings->summary));
 192                     $content .= html_writer::link(new moodle_url('/course/info.php', array('id'=>$course->id)), $image, array('title'=>$this->strings->summary));
 193                 }
 194                 $content .= html_writer::end_tag('div');
 195                 $content .= html_writer::end_tag('div');
 196             }
 197             $content .= html_writer::end_tag('div');
 198         }
 199         $content .= html_writer::end_tag('div');
 200         return $content;
 201     }
 202
 203     /**
 204      * Build the HTML for the module chooser javascript popup
 205      *
 206      * @param array $modules A set of modules as returned form @see
 207      * get_module_metadata
 208      * @param object $course The course that will be displayed
 209      * @return string The composed HTML for the module
 210      */
 211     public function course_modchooser($modules, $course) {
 212         global $OUTPUT;
 213
 214         // Add the header
 215         $header = html_writer::tag('div', get_string('addresourceoractivity', 'moodle'),
 216                 array('class' => 'hd choosertitle'));
 217
 218         $formcontent = html_writer::start_tag('form', array('action' => new moodle_url('/course/jumpto.php'),
 219                 'id' => 'chooserform', 'method' => 'post'));
 220         $formcontent .= html_writer::start_tag('div', array('id' => 'typeformdiv'));
 221         $formcontent .= html_writer::tag('input', '', array('type' => 'hidden', 'id' => 'course',
 222                 'name' => 'course', 'value' => $course->id));
 223         $formcontent .= html_writer::tag('input', '',
 224                 array('type' => 'hidden', 'class' => 'jump', 'name' => 'jump', 'value' => ''));
 225         $formcontent .= html_writer::tag('input', '', array('type' => 'hidden', 'name' => 'sesskey',
 226                 'value' => sesskey()));
 227         $formcontent .= html_writer::end_tag('div');
 228
 229         // Put everything into one tag 'options'
 230         $formcontent .= html_writer::start_tag('div', array('class' => 'options'));
 231         $formcontent .= html_writer::tag('div', get_string('selectmoduletoviewhelp', 'moodle'),
 232                 array('class' => 'instruction'));
 233         // Put all options into one tag 'alloptions' to allow us to handle scrolling
 234         $formcontent .= html_writer::start_tag('div', array('class' => 'alloptions'));
 235
 236         // Activities
 237         $activities = array_filter($modules,
 238                 create_function('$mod', 'return ($mod->archetype !== MOD_CLASS_RESOURCE);'));
 239         if (count($activities)) {
 240             $formcontent .= $this->course_modchooser_title('activities');
 241             $formcontent .= $this->course_modchooser_module_types($activities);
 242         }
 243
 244         // Resources
 245         $resources = array_filter($modules,
 246                 create_function('$mod', 'return ($mod->archetype === MOD_CLASS_RESOURCE);'));
 247         if (count($resources)) {
 248             $formcontent .= $this->course_modchooser_title('resources');
 249             $formcontent .= $this->course_modchooser_module_types($resources);
 250         }
 251
 252         $formcontent .= html_writer::end_tag('div'); // modoptions
 253         $formcontent .= html_writer::end_tag('div'); // types
 254
 255         $formcontent .= html_writer::start_tag('div', array('class' => 'submitbuttons'));
 256         $formcontent .= html_writer::tag('input', '',
 257                 array('type' => 'submit', 'name' => 'submitbutton', 'class' => 'submitbutton', 'value' => get_string('add')));
 258         $formcontent .= html_writer::tag('input', '',
 259                 array('type' => 'submit', 'name' => 'addcancel', 'class' => 'addcancel', 'value' => get_string('cancel')));
 260         $formcontent .= html_writer::end_tag('div');
 261         $formcontent .= html_writer::end_tag('form');
 262
 263         // Wrap the whole form in a div
 264         $formcontent = html_writer::tag('div', $formcontent, array('id' => 'chooseform'));
 265
 266         // Put all of the content together
 267         $content = $formcontent;
 268
 269         $content = html_writer::tag('div', $content, array('class' => 'choosercontainer'));
 270         return $header . html_writer::tag('div', $content, array('class' => 'chooserdialoguebody'));
 271     }
 272
 273     /**
 274      * Build the HTML for a specified set of modules
 275      *
 276      * @param array $modules A set of modules as used by the
 277      * course_modchooser_module function
 278      * @return string The composed HTML for the module
 279      */
 280     protected function course_modchooser_module_types($modules) {
 281         $return = '';
 282         foreach ($modules as $module) {
 283             if (!isset($module->types)) {
 284                 $return .= $this->course_modchooser_module($module);
 285             } else {
 286                 $return .= $this->course_modchooser_module($module, array('nonoption'));
 287                 foreach ($module->types as $type) {
 288                     $return .= $this->course_modchooser_module($type, array('option', 'subtype'));
 289                 }
 290             }
 291         }
 292         return $return;
 293     }
 294
 295     /**
 296      * Return the HTML for the specified module adding any required classes
 297      *
 298      * @param object $module An object containing the title, and link. An
 299      * icon, and help text may optionally be specified. If the module
 300      * contains subtypes in the types option, then these will also be
 301      * displayed.
 302      * @param array $classes Additional classes to add to the encompassing
 303      * div element
 304      * @return string The composed HTML for the module
 305      */
 306     protected function course_modchooser_module($module, $classes = array('option')) {
 307         $output = '';
 308         $output .= html_writer::start_tag('div', array('class' => implode(' ', $classes)));
 309         $output .= html_writer::start_tag('label', array('for' => 'module_' . $module->name));
 310         if (!isset($module->types)) {
 311             $output .= html_writer::tag('input', '', array('type' => 'radio',
 312                     'name' => 'jumplink', 'id' => 'module_' . $module->name, 'value' => $module->link));
 313         }
 314
 315         $output .= html_writer::start_tag('span', array('class' => 'modicon'));
 316         if (isset($module->icon)) {
 317             // Add an icon if we have one
 318             $output .= $module->icon;
 319         }
 320         $output .= html_writer::end_tag('span');
 321
 322         $output .= html_writer::tag('span', $module->title, array('class' => 'typename'));
 323         if (!isset($module->help)) {
 324             // Add help if found
 325             $module->help = get_string('nohelpforactivityorresource', 'moodle');
 326         }
 327
 328         // Format the help text using markdown with the following options
 329         $options = new stdClass();
 330         $options->trusted = false;
 331         $options->noclean = false;
 332         $options->smiley = false;
 333         $options->filter = false;
 334         $options->para = true;
 335         $options->newlines = false;
 336         $options->overflowdiv = false;
 337         $module->help = format_text($module->help, FORMAT_MARKDOWN, $options);
 338         $output .= html_writer::tag('span', $module->help, array('class' => 'typesummary'));
 339         $output .= html_writer::end_tag('label');
 340         $output .= html_writer::end_tag('div');
 341
 342         return $output;
 343     }
 344
 345     protected function course_modchooser_title($title, $identifier = null) {
 346         $module = new stdClass();
 347         $module->name = $title;
 348         $module->types = array();
 349         $module->title = get_string($title, $identifier);
 350         $module->help = '';
 351         return $this->course_modchooser_module($module, array('moduletypetitle'));
 352     }
 353 }