3 // This file is part of Moodle - http://moodle.org/
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.
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.
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/>.
19 * This file contains classes used to manage the navigation structures in Moodle
20 * and was introduced as part of the changes occuring in Moodle 2.0
24 * @copyright 2009 Sam Hemelryk
25 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
28 defined('MOODLE_INTERNAL') || die();
31 * The name that will be used to separate the navigation cache within SESSION
33 define('NAVIGATION_CACHE_NAME', 'navigation');
36 * This class is used to represent a node in a navigation tree
38 * This class is used to represent a node in a navigation tree within Moodle,
39 * the tree could be one of global navigation, settings navigation, or the navbar.
40 * Each node can be one of two types either a Leaf (default) or a branch.
41 * When a node is first created it is created as a leaf, when/if children are added
42 * the node then becomes a branch.
45 * @category navigation
46 * @copyright 2009 Sam Hemelryk
47 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
49 class navigation_node implements renderable {
50 /** @var int Used to identify this node a leaf (default) 0 */
51 const NODETYPE_LEAF = 0;
52 /** @var int Used to identify this node a branch, happens with children 1 */
53 const NODETYPE_BRANCH = 1;
54 /** @var null Unknown node type null */
55 const TYPE_UNKNOWN = null;
56 /** @var int System node type 0 */
57 const TYPE_ROOTNODE = 0;
58 /** @var int System node type 1 */
59 const TYPE_SYSTEM = 1;
60 /** @var int Category node type 10 */
61 const TYPE_CATEGORY = 10;
62 /** @var int Course node type 20 */
63 const TYPE_COURSE = 20;
64 /** @var int Course Structure node type 30 */
65 const TYPE_SECTION = 30;
66 /** @var int Activity node type, e.g. Forum, Quiz 40 */
67 const TYPE_ACTIVITY = 40;
68 /** @var int Resource node type, e.g. Link to a file, or label 50 */
69 const TYPE_RESOURCE = 50;
70 /** @var int A custom node type, default when adding without specifing type 60 */
71 const TYPE_CUSTOM = 60;
72 /** @var int Setting node type, used only within settings nav 70 */
73 const TYPE_SETTING = 70;
74 /** @var int Setting node type, used only within settings nav 80 */
76 /** @var int Setting node type, used for containers of no importance 90 */
77 const TYPE_CONTAINER = 90;
79 /** @var int Parameter to aid the coder in tracking [optional] */
81 /** @var string|int The identifier for the node, used to retrieve the node */
83 /** @var string The text to use for the node */
85 /** @var string Short text to use if requested [optional] */
86 public $shorttext = null;
87 /** @var string The title attribute for an action if one is defined */
89 /** @var string A string that can be used to build a help button */
90 public $helpbutton = null;
91 /** @var moodle_url|action_link|null An action for the node (link) */
92 public $action = null;
93 /** @var pix_icon The path to an icon to use for this node */
95 /** @var int See TYPE_* constants defined for this class */
96 public $type = self::TYPE_UNKNOWN;
97 /** @var int See NODETYPE_* constants defined for this class */
98 public $nodetype = self::NODETYPE_LEAF;
99 /** @var bool If set to true the node will be collapsed by default */
100 public $collapse = false;
101 /** @var bool If set to true the node will be expanded by default */
102 public $forceopen = false;
103 /** @var array An array of CSS classes for the node */
104 public $classes = array();
105 /** @var navigation_node_collection An array of child nodes */
106 public $children = array();
107 /** @var bool If set to true the node will be recognised as active */
108 public $isactive = false;
109 /** @var bool If set to true the node will be dimmed */
110 public $hidden = false;
111 /** @var bool If set to false the node will not be displayed */
112 public $display = true;
113 /** @var bool If set to true then an HR will be printed before the node */
114 public $preceedwithhr = false;
115 /** @var bool If set to true the the navigation bar should ignore this node */
116 public $mainnavonly = false;
117 /** @var bool If set to true a title will be added to the action no matter what */
118 public $forcetitle = false;
119 /** @var navigation_node A reference to the node parent, you should never set this directly you should always call set_parent */
120 public $parent = null;
121 /** @var bool Override to not display the icon even if one is provided **/
122 public $hideicon = false;
124 protected $namedtypes = array(0=>'system',10=>'category',20=>'course',30=>'structure',40=>'activity',50=>'resource',60=>'custom',70=>'setting', 80=>'user');
125 /** @var moodle_url */
126 protected static $fullmeurl = null;
127 /** @var bool toogles auto matching of active node */
128 public static $autofindactive = true;
129 /** @var mixed If set to an int, that section will be included even if it has no activities */
130 public $includesectionnum = false;
133 * Constructs a new navigation_node
135 * @param array|string $properties Either an array of properties or a string to use
136 * as the text for the node
138 public function __construct($properties) {
139 if (is_array($properties)) {
140 // Check the array for each property that we allow to set at construction.
141 // text - The main content for the node
142 // shorttext - A short text if required for the node
143 // icon - The icon to display for the node
144 // type - The type of the node
145 // key - The key to use to identify the node
146 // parent - A reference to the nodes parent
147 // action - The action to attribute to this node, usually a URL to link to
148 if (array_key_exists('text', $properties)) {
149 $this->text = $properties['text'];
151 if (array_key_exists('shorttext', $properties)) {
152 $this->shorttext = $properties['shorttext'];
154 if (!array_key_exists('icon', $properties)) {
155 $properties['icon'] = new pix_icon('i/navigationitem', 'moodle');
157 $this->icon = $properties['icon'];
158 if ($this->icon instanceof pix_icon) {
159 if (empty($this->icon->attributes['class'])) {
160 $this->icon->attributes['class'] = 'navicon';
162 $this->icon->attributes['class'] .= ' navicon';
165 if (array_key_exists('type', $properties)) {
166 $this->type = $properties['type'];
168 $this->type = self::TYPE_CUSTOM;
170 if (array_key_exists('key', $properties)) {
171 $this->key = $properties['key'];
173 // This needs to happen last because of the check_if_active call that occurs
174 if (array_key_exists('action', $properties)) {
175 $this->action = $properties['action'];
176 if (is_string($this->action)) {
177 $this->action = new moodle_url($this->action);
179 if (self::$autofindactive) {
180 $this->check_if_active();
183 if (array_key_exists('parent', $properties)) {
184 $this->set_parent($properties['parent']);
186 } else if (is_string($properties)) {
187 $this->text = $properties;
189 if ($this->text === null) {
190 throw new coding_exception('You must set the text for the node when you create it.');
192 // Default the title to the text
193 $this->title = $this->text;
194 // Instantiate a new navigation node collection for this nodes children
195 $this->children = new navigation_node_collection();
199 * Checks if this node is the active node.
201 * This is determined by comparing the action for the node against the
202 * defined URL for the page. A match will see this node marked as active.
204 * @param int $strength One of URL_MATCH_EXACT, URL_MATCH_PARAMS, or URL_MATCH_BASE
207 public function check_if_active($strength=URL_MATCH_EXACT) {
208 global $FULLME, $PAGE;
209 // Set fullmeurl if it hasn't already been set
210 if (self::$fullmeurl == null) {
211 if ($PAGE->has_set_url()) {
212 self::override_active_url(new moodle_url($PAGE->url));
214 self::override_active_url(new moodle_url($FULLME));
218 // Compare the action of this node against the fullmeurl
219 if ($this->action instanceof moodle_url && $this->action->compare(self::$fullmeurl, $strength)) {
220 $this->make_active();
227 * This sets the URL that the URL of new nodes get compared to when locating
230 * The active node is the node that matches the URL set here. By default this
231 * is either $PAGE->url or if that hasn't been set $FULLME.
233 * @param moodle_url $url The url to use for the fullmeurl.
235 public static function override_active_url(moodle_url $url) {
236 // Clone the URL, in case the calling script changes their URL later.
237 self::$fullmeurl = new moodle_url($url);
241 * Creates a navigation node, ready to add it as a child using add_node
242 * function. (The created node needs to be added before you can use it.)
243 * @param string $text
244 * @param moodle_url|action_link $action
246 * @param string $shorttext
247 * @param string|int $key
248 * @param pix_icon $icon
249 * @return navigation_node
251 public static function create($text, $action=null, $type=self::TYPE_CUSTOM,
252 $shorttext=null, $key=null, pix_icon $icon=null) {
253 // Properties array used when creating the new navigation node
258 // Set the action if one was provided
259 if ($action!==null) {
260 $itemarray['action'] = $action;
262 // Set the shorttext if one was provided
263 if ($shorttext!==null) {
264 $itemarray['shorttext'] = $shorttext;
266 // Set the icon if one was provided
268 $itemarray['icon'] = $icon;
271 $itemarray['key'] = $key;
272 // Construct and return
273 return new navigation_node($itemarray);
277 * Adds a navigation node as a child of this node.
279 * @param string $text
280 * @param moodle_url|action_link $action
282 * @param string $shorttext
283 * @param string|int $key
284 * @param pix_icon $icon
285 * @return navigation_node
287 public function add($text, $action=null, $type=self::TYPE_CUSTOM, $shorttext=null, $key=null, pix_icon $icon=null) {
289 $childnode = self::create($text, $action, $type, $shorttext, $key, $icon);
291 // Add the child to end and return
292 return $this->add_node($childnode);
296 * Adds a navigation node as a child of this one, given a $node object
297 * created using the create function.
298 * @param navigation_node $childnode Node to add
299 * @param string $beforekey
300 * @return navigation_node The added node
302 public function add_node(navigation_node $childnode, $beforekey=null) {
303 // First convert the nodetype for this node to a branch as it will now have children
304 if ($this->nodetype !== self::NODETYPE_BRANCH) {
305 $this->nodetype = self::NODETYPE_BRANCH;
307 // Set the parent to this node
308 $childnode->set_parent($this);
310 // Default the key to the number of children if not provided
311 if ($childnode->key === null) {
312 $childnode->key = $this->children->count();
315 // Add the child using the navigation_node_collections add method
316 $node = $this->children->add($childnode, $beforekey);
318 // If added node is a category node or the user is logged in and it's a course
319 // then mark added node as a branch (makes it expandable by AJAX)
320 $type = $childnode->type;
321 if (($type==self::TYPE_CATEGORY) || (isloggedin() && $type==self::TYPE_COURSE)) {
322 $node->nodetype = self::NODETYPE_BRANCH;
324 // If this node is hidden mark it's children as hidden also
326 $node->hidden = true;
328 // Return added node (reference returned by $this->children->add()
333 * Return a list of all the keys of all the child nodes.
334 * @return array the keys.
336 public function get_children_key_list() {
337 return $this->children->get_key_list();
341 * Searches for a node of the given type with the given key.
343 * This searches this node plus all of its children, and their children....
344 * If you know the node you are looking for is a child of this node then please
345 * use the get method instead.
347 * @param int|string $key The key of the node we are looking for
348 * @param int $type One of navigation_node::TYPE_*
349 * @return navigation_node|false
351 public function find($key, $type) {
352 return $this->children->find($key, $type);
356 * Get the child of this node that has the given key + (optional) type.
358 * If you are looking for a node and want to search all children + thier children
359 * then please use the find method instead.
361 * @param int|string $key The key of the node we are looking for
362 * @param int $type One of navigation_node::TYPE_*
363 * @return navigation_node|false
365 public function get($key, $type=null) {
366 return $this->children->get($key, $type);
374 public function remove() {
375 return $this->parent->children->remove($this->key, $this->type);
379 * Checks if this node has or could have any children
381 * @return bool Returns true if it has children or could have (by AJAX expansion)
383 public function has_children() {
384 return ($this->nodetype === navigation_node::NODETYPE_BRANCH || $this->children->count()>0);
388 * Marks this node as active and forces it open.
390 * Important: If you are here because you need to mark a node active to get
391 * the navigation to do what you want have you looked at {@link navigation_node::override_active_url()}?
392 * You can use it to specify a different URL to match the active navigation node on
393 * rather than having to locate and manually mark a node active.
395 public function make_active() {
396 $this->isactive = true;
397 $this->add_class('active_tree_node');
399 if ($this->parent !== null) {
400 $this->parent->make_inactive();
405 * Marks a node as inactive and recusised back to the base of the tree
406 * doing the same to all parents.
408 public function make_inactive() {
409 $this->isactive = false;
410 $this->remove_class('active_tree_node');
411 if ($this->parent !== null) {
412 $this->parent->make_inactive();
417 * Forces this node to be open and at the same time forces open all
418 * parents until the root node.
422 public function force_open() {
423 $this->forceopen = true;
424 if ($this->parent !== null) {
425 $this->parent->force_open();
430 * Adds a CSS class to this node.
432 * @param string $class
435 public function add_class($class) {
436 if (!in_array($class, $this->classes)) {
437 $this->classes[] = $class;
443 * Removes a CSS class from this node.
445 * @param string $class
446 * @return bool True if the class was successfully removed.
448 public function remove_class($class) {
449 if (in_array($class, $this->classes)) {
450 $key = array_search($class,$this->classes);
452 unset($this->classes[$key]);
460 * Sets the title for this node and forces Moodle to utilise it.
461 * @param string $title
463 public function title($title) {
464 $this->title = $title;
465 $this->forcetitle = true;
469 * Resets the page specific information on this node if it is being unserialised.
471 public function __wakeup(){
472 $this->forceopen = false;
473 $this->isactive = false;
474 $this->remove_class('active_tree_node');
478 * Checks if this node or any of its children contain the active node.
484 public function contains_active_node() {
485 if ($this->isactive) {
488 foreach ($this->children as $child) {
489 if ($child->isactive || $child->contains_active_node()) {
498 * Finds the active node.
500 * Searches this nodes children plus all of the children for the active node
501 * and returns it if found.
505 * @return navigation_node|false
507 public function find_active_node() {
508 if ($this->isactive) {
511 foreach ($this->children as &$child) {
512 $outcome = $child->find_active_node();
513 if ($outcome !== false) {
522 * Searches all children for the best matching active node
523 * @return navigation_node|false
525 public function search_for_active_node() {
526 if ($this->check_if_active(URL_MATCH_BASE)) {
529 foreach ($this->children as &$child) {
530 $outcome = $child->search_for_active_node();
531 if ($outcome !== false) {
540 * Gets the content for this node.
542 * @param bool $shorttext If true shorttext is used rather than the normal text
545 public function get_content($shorttext=false) {
546 if ($shorttext && $this->shorttext!==null) {
547 return format_string($this->shorttext);
549 return format_string($this->text);
554 * Gets the title to use for this node.
558 public function get_title() {
559 if ($this->forcetitle || $this->action != null){
567 * Gets the CSS class to add to this node to describe its type
571 public function get_css_type() {
572 if (array_key_exists($this->type, $this->namedtypes)) {
573 return 'type_'.$this->namedtypes[$this->type];
575 return 'type_unknown';
579 * Finds all nodes that are expandable by AJAX
581 * @param array $expandable An array by reference to populate with expandable nodes.
583 public function find_expandable(array &$expandable) {
584 foreach ($this->children as &$child) {
585 if ($child->nodetype == self::NODETYPE_BRANCH && $child->children->count() == 0 && $child->display) {
586 $child->id = 'expandable_branch_'.(count($expandable)+1);
587 $this->add_class('canexpand');
588 $expandable[] = array('id' => $child->id, 'key' => $child->key, 'type' => $child->type);
590 $child->find_expandable($expandable);
595 * Finds all nodes of a given type (recursive)
597 * @param int $type One of navigation_node::TYPE_*
600 public function find_all_of_type($type) {
601 $nodes = $this->children->type($type);
602 foreach ($this->children as &$node) {
603 $childnodes = $node->find_all_of_type($type);
604 $nodes = array_merge($nodes, $childnodes);
610 * Removes this node if it is empty
612 public function trim_if_empty() {
613 if ($this->children->count() == 0) {
619 * Creates a tab representation of this nodes children that can be used
620 * with print_tabs to produce the tabs on a page.
622 * call_user_func_array('print_tabs', $node->get_tabs_array());
624 * @param array $inactive
625 * @param bool $return
626 * @return array Array (tabs, selected, inactive, activated, return)
628 public function get_tabs_array(array $inactive=array(), $return=false) {
632 $activated = array();
633 foreach ($this->children as $node) {
634 $tabs[] = new tabobject($node->key, $node->action, $node->get_content(), $node->get_title());
635 if ($node->contains_active_node()) {
636 if ($node->children->count() > 0) {
637 $activated[] = $node->key;
638 foreach ($node->children as $child) {
639 if ($child->contains_active_node()) {
640 $selected = $child->key;
642 $rows[] = new tabobject($child->key, $child->action, $child->get_content(), $child->get_title());
645 $selected = $node->key;
649 return array(array($tabs, $rows), $selected, $inactive, $activated, $return);
653 * Sets the parent for this node and if this node is active ensures that the tree is properly
656 * @param navigation_node $parent
658 public function set_parent(navigation_node $parent) {
659 // Set the parent (thats the easy part)
660 $this->parent = $parent;
661 // Check if this node is active (this is checked during construction)
662 if ($this->isactive) {
663 // Force all of the parent nodes open so you can see this node
664 $this->parent->force_open();
665 // Make all parents inactive so that its clear where we are.
666 $this->parent->make_inactive();
672 * Navigation node collection
674 * This class is responsible for managing a collection of navigation nodes.
675 * It is required because a node's unique identifier is a combination of both its
678 * Originally an array was used with a string key that was a combination of the two
679 * however it was decided that a better solution would be to use a class that
680 * implements the standard IteratorAggregate interface.
683 * @category navigation
684 * @copyright 2010 Sam Hemelryk
685 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
687 class navigation_node_collection implements IteratorAggregate {
689 * A multidimensional array to where the first key is the type and the second
690 * key is the nodes key.
693 protected $collection = array();
695 * An array that contains references to nodes in the same order they were added.
696 * This is maintained as a progressive array.
699 protected $orderedcollection = array();
701 * A reference to the last node that was added to the collection
702 * @var navigation_node
704 protected $last = null;
706 * The total number of items added to this array.
709 protected $count = 0;
712 * Adds a navigation node to the collection
714 * @param navigation_node $node Node to add
715 * @param string $beforekey If specified, adds before a node with this key,
716 * otherwise adds at end
717 * @return navigation_node Added node
719 public function add(navigation_node $node, $beforekey=null) {
724 // First check we have a 2nd dimension for this type
725 if (!array_key_exists($type, $this->orderedcollection)) {
726 $this->orderedcollection[$type] = array();
728 // Check for a collision and report if debugging is turned on
729 if ($CFG->debug && array_key_exists($key, $this->orderedcollection[$type])) {
730 debugging('Navigation node intersect: Adding a node that already exists '.$key, DEBUG_DEVELOPER);
733 // Find the key to add before
734 $newindex = $this->count;
736 if ($beforekey !== null) {
737 foreach ($this->collection as $index => $othernode) {
738 if ($othernode->key === $beforekey) {
744 if ($newindex === $this->count) {
745 debugging('Navigation node add_before: Reference node not found ' . $beforekey .
746 ', options: ' . implode(' ', $this->get_key_list()), DEBUG_DEVELOPER);
750 // Add the node to the appropriate place in the by-type structure (which
751 // is not ordered, despite the variable name)
752 $this->orderedcollection[$type][$key] = $node;
754 // Update existing references in the ordered collection (which is the
755 // one that isn't called 'ordered') to shuffle them along if required
756 for ($oldindex = $this->count; $oldindex > $newindex; $oldindex--) {
757 $this->collection[$oldindex] = $this->collection[$oldindex - 1];
760 // Add a reference to the node to the progressive collection.
761 $this->collection[$newindex] = &$this->orderedcollection[$type][$key];
762 // Update the last property to a reference to this new node.
763 $this->last = &$this->orderedcollection[$type][$key];
765 // Reorder the array by index if needed
767 ksort($this->collection);
770 // Return the reference to the now added node
775 * Return a list of all the keys of all the nodes.
776 * @return array the keys.
778 public function get_key_list() {
780 foreach ($this->collection as $node) {
781 $keys[] = $node->key;
787 * Fetches a node from this collection.
789 * @param string|int $key The key of the node we want to find.
790 * @param int $type One of navigation_node::TYPE_*.
791 * @return navigation_node|null
793 public function get($key, $type=null) {
794 if ($type !== null) {
795 // If the type is known then we can simply check and fetch
796 if (!empty($this->orderedcollection[$type][$key])) {
797 return $this->orderedcollection[$type][$key];
800 // Because we don't know the type we look in the progressive array
801 foreach ($this->collection as $node) {
802 if ($node->key === $key) {
811 * Searches for a node with matching key and type.
813 * This function searches both the nodes in this collection and all of
814 * the nodes in each collection belonging to the nodes in this collection.
818 * @param string|int $key The key of the node we want to find.
819 * @param int $type One of navigation_node::TYPE_*.
820 * @return navigation_node|null
822 public function find($key, $type=null) {
823 if ($type !== null && array_key_exists($type, $this->orderedcollection) && array_key_exists($key, $this->orderedcollection[$type])) {
824 return $this->orderedcollection[$type][$key];
826 $nodes = $this->getIterator();
827 // Search immediate children first
828 foreach ($nodes as &$node) {
829 if ($node->key === $key && ($type === null || $type === $node->type)) {
833 // Now search each childs children
834 foreach ($nodes as &$node) {
835 $result = $node->children->find($key, $type);
836 if ($result !== false) {
845 * Fetches the last node that was added to this collection
847 * @return navigation_node
849 public function last() {
854 * Fetches all nodes of a given type from this collection
856 * @param string|int $type node type being searched for.
857 * @return array ordered collection
859 public function type($type) {
860 if (!array_key_exists($type, $this->orderedcollection)) {
861 $this->orderedcollection[$type] = array();
863 return $this->orderedcollection[$type];
866 * Removes the node with the given key and type from the collection
868 * @param string|int $key The key of the node we want to find.
872 public function remove($key, $type=null) {
873 $child = $this->get($key, $type);
874 if ($child !== false) {
875 foreach ($this->collection as $colkey => $node) {
876 if ($node->key == $key && $node->type == $type) {
877 unset($this->collection[$colkey]);
881 unset($this->orderedcollection[$child->type][$child->key]);
889 * Gets the number of nodes in this collection
891 * This option uses an internal count rather than counting the actual options to avoid
892 * a performance hit through the count function.
896 public function count() {
900 * Gets an array iterator for the collection.
902 * This is required by the IteratorAggregator interface and is used by routines
903 * such as the foreach loop.
905 * @return ArrayIterator
907 public function getIterator() {
908 return new ArrayIterator($this->collection);
913 * The global navigation class used for... the global navigation
915 * This class is used by PAGE to store the global navigation for the site
916 * and is then used by the settings nav and navbar to save on processing and DB calls
919 * {@link lib/pagelib.php} {@link moodle_page::initialise_theme_and_output()}
920 * {@link lib/ajax/getnavbranch.php} Called by ajax
923 * @category navigation
924 * @copyright 2009 Sam Hemelryk
925 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
927 class global_navigation extends navigation_node {
928 /** @var moodle_page The Moodle page this navigation object belongs to. */
930 /** @var bool switch to let us know if the navigation object is initialised*/
931 protected $initialised = false;
932 /** @var array An array of course information */
933 protected $mycourses = array();
934 /** @var array An array for containing root navigation nodes */
935 protected $rootnodes = array();
936 /** @var bool A switch for whether to show empty sections in the navigation */
937 protected $showemptysections = false;
938 /** @var bool A switch for whether courses should be shown within categories on the navigation. */
939 protected $showcategories = null;
940 /** @var array An array of stdClasses for users that the navigation is extended for */
941 protected $extendforuser = array();
942 /** @var navigation_cache */
944 /** @var array An array of course ids that are present in the navigation */
945 protected $addedcourses = array();
946 /** @var array An array of category ids that are included in the navigation */
947 protected $addedcategories = array();
948 /** @var int expansion limit */
949 protected $expansionlimit = 0;
950 /** @var int userid to allow parent to see child's profile page navigation */
951 protected $useridtouseforparentchecks = 0;
954 * Constructs a new global navigation
956 * @param moodle_page $page The page this navigation object belongs to
958 public function __construct(moodle_page $page) {
959 global $CFG, $SITE, $USER;
961 if (during_initial_install()) {
965 if (get_home_page() == HOMEPAGE_SITE) {
966 // We are using the site home for the root element
969 'type' => navigation_node::TYPE_SYSTEM,
970 'text' => get_string('home'),
971 'action' => new moodle_url('/')
974 // We are using the users my moodle for the root element
977 'type' => navigation_node::TYPE_SYSTEM,
978 'text' => get_string('myhome'),
979 'action' => new moodle_url('/my/')
983 // Use the parents constructor.... good good reuse
984 parent::__construct($properties);
986 // Initalise and set defaults
988 $this->forceopen = true;
989 $this->cache = new navigation_cache(NAVIGATION_CACHE_NAME);
993 * Mutator to set userid to allow parent to see child's profile
994 * page navigation. See MDL-25805 for initial issue. Linked to it
995 * is an issue explaining why this is a REALLY UGLY HACK thats not
998 * @param int $userid userid of profile page that parent wants to navigate around.
1000 public function set_userid_for_parent_checks($userid) {
1001 $this->useridtouseforparentchecks = $userid;
1006 * Initialises the navigation object.
1008 * This causes the navigation object to look at the current state of the page
1009 * that it is associated with and then load the appropriate content.
1011 * This should only occur the first time that the navigation structure is utilised
1012 * which will normally be either when the navbar is called to be displayed or
1013 * when a block makes use of it.
1017 public function initialise() {
1018 global $CFG, $SITE, $USER, $DB;
1019 // Check if it has alread been initialised
1020 if ($this->initialised || during_initial_install()) {
1023 $this->initialised = true;
1025 // Set up the five base root nodes. These are nodes where we will put our
1026 // content and are as follows:
1027 // site: Navigation for the front page.
1028 // myprofile: User profile information goes here.
1029 // mycourses: The users courses get added here.
1030 // courses: Additional courses are added here.
1031 // users: Other users information loaded here.
1032 $this->rootnodes = array();
1033 if (get_home_page() == HOMEPAGE_SITE) {
1034 // The home element should be my moodle because the root element is the site
1035 if (isloggedin() && !isguestuser()) { // Makes no sense if you aren't logged in
1036 $this->rootnodes['home'] = $this->add(get_string('myhome'), new moodle_url('/my/'), self::TYPE_SETTING, null, 'home');
1039 // The home element should be the site because the root node is my moodle
1040 $this->rootnodes['home'] = $this->add(get_string('sitehome'), new moodle_url('/'), self::TYPE_SETTING, null, 'home');
1041 if (!empty($CFG->defaulthomepage) && ($CFG->defaulthomepage == HOMEPAGE_MY)) {
1042 // We need to stop automatic redirection
1043 $this->rootnodes['home']->action->param('redirect', '0');
1046 $this->rootnodes['site'] = $this->add_course($SITE);
1047 $this->rootnodes['myprofile'] = $this->add(get_string('myprofile'), null, self::TYPE_USER, null, 'myprofile');
1048 $this->rootnodes['mycourses'] = $this->add(get_string('mycourses'), null, self::TYPE_ROOTNODE, null, 'mycourses');
1049 $this->rootnodes['courses'] = $this->add(get_string('courses'), new moodle_url('/course/index.php'), self::TYPE_ROOTNODE, null, 'courses');
1050 $this->rootnodes['users'] = $this->add(get_string('users'), null, self::TYPE_ROOTNODE, null, 'users');
1052 // Fetch all of the users courses.
1054 if (!empty($CFG->navcourselimit)) {
1055 $limit = $CFG->navcourselimit;
1058 $mycourses = enrol_get_my_courses(NULL, 'visible DESC,sortorder ASC');
1059 $showallcourses = (count($mycourses) == 0 || !empty($CFG->navshowallcourses));
1060 // When checking if we are to show categories there is an additional override.
1061 // If the user is viewing a category then we will load it regardless of settings.
1062 // to ensure that the navigation is consistent.
1063 $showcategories = $this->page->context->contextlevel == CONTEXT_COURSECAT || ($showallcourses && $this->show_categories());
1064 $issite = ($this->page->course->id == SITEID);
1065 $ismycourse = (array_key_exists($this->page->course->id, $mycourses));
1067 // Check if any courses were returned.
1068 if (count($mycourses) > 0) {
1070 // Check if categories should be displayed within the my courses branch
1071 if (!empty($CFG->navshowmycoursecategories)) {
1073 // Find the category of each mycourse
1074 $categories = array();
1075 foreach ($mycourses as $course) {
1076 $categories[] = $course->category;
1079 // Do a single DB query to get the categories immediately associated with
1080 // courses the user is enrolled in.
1081 $categories = $DB->get_records_list('course_categories', 'id', array_unique($categories), 'depth ASC, sortorder ASC');
1082 // Work out the parent categories that we need to load that we havn't
1084 $categoryids = array();
1085 foreach ($categories as $category) {
1086 $categoryids = array_merge($categoryids, explode('/', trim($category->path, '/')));
1088 $categoryids = array_unique($categoryids);
1089 $categoryids = array_diff($categoryids, array_keys($categories));
1091 if (count($categoryids)) {
1092 // Fetch any other categories we need.
1093 $allcategories = $DB->get_records_list('course_categories', 'id', $categoryids, 'depth ASC, sortorder ASC');
1094 if (is_array($allcategories) && count($allcategories) > 0) {
1095 $categories = array_merge($categories, $allcategories);
1099 // We ONLY want the categories, we need to get rid of the keys
1100 $categories = array_values($categories);
1101 $addedcategories = array();
1102 while (($category = array_shift($categories)) !== null) {
1103 if ($category->parent == '0') {
1104 $categoryparent = $this->rootnodes['mycourses'];
1105 } else if (array_key_exists($category->parent, $addedcategories)) {
1106 $categoryparent = $addedcategories[$category->parent];
1108 // Prepare to count iterations. We don't want to loop forever
1109 // accidentally if for some reason a category can't be placed.
1110 if (!isset($category->loopcount)) {
1111 $category->loopcount = 0;
1113 $category->loopcount++;
1114 if ($category->loopcount > 5) {
1115 // This is a pretty serious problem and this should never happen.
1116 // If it does then for some reason a category has been loaded but
1117 // its parents have now. It could be data corruption.
1118 debugging('Category '.$category->id.' could not be placed within the navigation', DEBUG_DEVELOPER);
1120 // Add it back to the end of the categories array
1121 array_push($categories, $category);
1126 $url = new moodle_url('/course/category.php', array('id' => $category->id));
1127 $addedcategories[$category->id] = $categoryparent->add($category->name, $url, self::TYPE_CATEGORY, $category->name, $category->id);
1129 if (!$category->visible) {
1130 if (!has_capability('moodle/category:viewhiddencategories', get_context_instance(CONTEXT_COURSECAT, $category->parent))) {
1131 $addedcategories[$category->id]->display = false;
1133 $addedcategories[$category->id]->hidden = true;
1139 // Add all of the users courses to the navigation.
1140 foreach ($mycourses as $course) {
1141 $course->coursenode = $this->add_course($course, false, true);
1145 if ($showallcourses) {
1147 $this->load_all_courses();
1150 // We always load the frontpage course to ensure it is available without
1151 // JavaScript enabled.
1152 $frontpagecourse = $this->load_course($SITE);
1153 $this->add_front_page_course_essentials($frontpagecourse, $SITE);
1154 $this->load_course_sections($SITE, $frontpagecourse);
1156 $canviewcourseprofile = true;
1158 // Next load context specific content into the navigation
1159 switch ($this->page->context->contextlevel) {
1160 case CONTEXT_SYSTEM :
1161 // This has already been loaded we just need to map the variable
1162 $coursenode = $frontpagecourse;
1163 $this->load_all_categories(null, $showcategories);
1165 case CONTEXT_COURSECAT :
1166 // This has already been loaded we just need to map the variable
1167 $coursenode = $frontpagecourse;
1168 $this->load_all_categories($this->page->context->instanceid, $showcategories);
1169 if (array_key_exists($this->page->context->instanceid, $this->addedcategories)) {
1170 $this->addedcategories[$this->page->context->instanceid]->make_active();
1173 case CONTEXT_BLOCK :
1174 case CONTEXT_COURSE :
1176 // If it is the front page course, or a block on it then
1177 // everything has already been loaded.
1180 // Load the course associated with the page into the navigation
1181 $course = $this->page->course;
1182 if ($showcategories && !$ismycourse) {
1183 $this->load_all_categories($course->category, $showcategories);
1185 $coursenode = $this->load_course($course);
1187 // If the course wasn't added then don't try going any further.
1189 $canviewcourseprofile = false;
1193 // If the user is not enrolled then we only want to show the
1194 // course node and not populate it.
1196 // Not enrolled, can't view, and hasn't switched roles
1197 if (!can_access_course($course)) {
1198 // TODO: very ugly hack - do not force "parents" to enrol into course their child is enrolled in,
1199 // this hack has been propagated from user/view.php to display the navigation node. (MDL-25805)
1201 if ($this->useridtouseforparentchecks) {
1202 if ($this->useridtouseforparentchecks != $USER->id) {
1203 $usercontext = get_context_instance(CONTEXT_USER, $this->useridtouseforparentchecks, MUST_EXIST);
1204 if ($DB->record_exists('role_assignments', array('userid' => $USER->id, 'contextid' => $usercontext->id))
1205 and has_capability('moodle/user:viewdetails', $usercontext)) {
1212 $coursenode->make_active();
1213 $canviewcourseprofile = false;
1217 // Add the essentials such as reports etc...
1218 $this->add_course_essentials($coursenode, $course);
1219 if ($this->format_display_course_content($course->format)) {
1220 // Load the course sections
1221 $sections = $this->load_course_sections($course, $coursenode);
1223 if (!$coursenode->contains_active_node() && !$coursenode->search_for_active_node()) {
1224 $coursenode->make_active();
1227 case CONTEXT_MODULE :
1229 // If this is the site course then most information will have
1230 // already been loaded.
1231 // However we need to check if there is more content that can
1232 // yet be loaded for the specific module instance.
1233 $activitynode = $this->rootnodes['site']->get($this->page->cm->id, navigation_node::TYPE_ACTIVITY);
1234 if ($activitynode) {
1235 $this->load_activity($this->page->cm, $this->page->course, $activitynode);
1240 $course = $this->page->course;
1241 $cm = $this->page->cm;
1243 if ($showcategories && !$ismycourse) {
1244 $this->load_all_categories($course->category, $showcategories);
1247 // Load the course associated with the page into the navigation
1248 $coursenode = $this->load_course($course);
1250 // If the course wasn't added then don't try going any further.
1252 $canviewcourseprofile = false;
1256 // If the user is not enrolled then we only want to show the
1257 // course node and not populate it.
1258 if (!can_access_course($course)) {
1259 $coursenode->make_active();
1260 $canviewcourseprofile = false;
1264 $this->add_course_essentials($coursenode, $course);
1266 // Get section number from $cm (if provided) - we need this
1267 // before loading sections in order to tell it to load this section
1268 // even if it would not normally display (=> it contains only
1269 // a label, which we are now editing)
1270 $sectionnum = isset($cm->sectionnum) ? $cm->sectionnum : 0;
1272 // This value has to be stored in a member variable because
1273 // otherwise we would have to pass it through a public API
1274 // to course formats and they would need to change their
1275 // functions to pass it along again...
1276 $this->includesectionnum = $sectionnum;
1278 $this->includesectionnum = false;
1281 // Load the course sections into the page
1282 $sections = $this->load_course_sections($course, $coursenode);
1283 if ($course->id != SITEID) {
1284 // Find the section for the $CM associated with the page and collect
1285 // its section number.
1287 $cm->sectionnumber = $sectionnum;
1289 foreach ($sections as $section) {
1290 if ($section->id == $cm->section) {
1291 $cm->sectionnumber = $section->section;
1297 // Load all of the section activities for the section the cm belongs to.
1298 if (isset($cm->sectionnumber) and !empty($sections[$cm->sectionnumber])) {
1299 list($sectionarray, $activityarray) = $this->generate_sections_and_activities($course);
1300 $activities = $this->load_section_activities($sections[$cm->sectionnumber]->sectionnode, $cm->sectionnumber, $activityarray);
1302 $activities = array();
1303 if ($activity = $this->load_stealth_activity($coursenode, get_fast_modinfo($course))) {
1304 // "stealth" activity from unavailable section
1305 $activities[$cm->id] = $activity;
1309 $activities = array();
1310 $activities[$cm->id] = $coursenode->get($cm->id, navigation_node::TYPE_ACTIVITY);
1312 if (!empty($activities[$cm->id])) {
1313 // Finally load the cm specific navigaton information
1314 $this->load_activity($cm, $course, $activities[$cm->id]);
1315 // Check if we have an active ndoe
1316 if (!$activities[$cm->id]->contains_active_node() && !$activities[$cm->id]->search_for_active_node()) {
1317 // And make the activity node active.
1318 $activities[$cm->id]->make_active();
1321 //TODO: something is wrong, what to do? (Skodak)
1326 // The users profile information etc is already loaded
1327 // for the front page.
1330 $course = $this->page->course;
1331 if ($showcategories && !$ismycourse) {
1332 $this->load_all_categories($course->category, $showcategories);
1334 // Load the course associated with the user into the navigation
1335 $coursenode = $this->load_course($course);
1337 // If the course wasn't added then don't try going any further.
1339 $canviewcourseprofile = false;
1343 // If the user is not enrolled then we only want to show the
1344 // course node and not populate it.
1345 if (!can_access_course($course)) {
1346 $coursenode->make_active();
1347 $canviewcourseprofile = false;
1350 $this->add_course_essentials($coursenode, $course);
1351 $sections = $this->load_course_sections($course, $coursenode);
1356 if (!empty($CFG->navcourselimit)) {
1357 $limit = $CFG->navcourselimit;
1359 if ($showcategories) {
1360 $categories = $this->find_all_of_type(self::TYPE_CATEGORY);
1361 foreach ($categories as &$category) {
1362 if ($category->children->count() >= $limit) {
1363 $url = new moodle_url('/course/category.php', array('id'=>$category->key));
1364 $category->add(get_string('viewallcourses'), $url, self::TYPE_SETTING);
1367 } else if ($this->rootnodes['courses']->children->count() >= $limit) {
1368 $this->rootnodes['courses']->add(get_string('viewallcoursescategories'), new moodle_url('/course/index.php'), self::TYPE_SETTING);
1371 // Load for the current user
1372 $this->load_for_user();
1373 if ($this->page->context->contextlevel >= CONTEXT_COURSE && $this->page->context->instanceid != SITEID && $canviewcourseprofile) {
1374 $this->load_for_user(null, true);
1376 // Load each extending user into the navigation.
1377 foreach ($this->extendforuser as $user) {
1378 if ($user->id != $USER->id) {
1379 $this->load_for_user($user);
1383 // Give the local plugins a chance to include some navigation if they want.
1384 foreach (get_list_of_plugins('local') as $plugin) {
1385 if (!file_exists($CFG->dirroot.'/local/'.$plugin.'/lib.php')) {
1388 require_once($CFG->dirroot.'/local/'.$plugin.'/lib.php');
1389 $function = $plugin.'_extends_navigation';
1390 if (function_exists($function)) {
1395 // Remove any empty root nodes
1396 foreach ($this->rootnodes as $node) {
1397 // Dont remove the home node
1398 if ($node->key !== 'home' && !$node->has_children()) {
1403 if (!$this->contains_active_node()) {
1404 $this->search_for_active_node();
1407 // If the user is not logged in modify the navigation structure as detailed
1408 // in {@link http://docs.moodle.org/dev/Navigation_2.0_structure}
1409 if (!isloggedin()) {
1410 $activities = clone($this->rootnodes['site']->children);
1411 $this->rootnodes['site']->remove();
1412 $children = clone($this->children);
1413 $this->children = new navigation_node_collection();
1414 foreach ($activities as $child) {
1415 $this->children->add($child);
1417 foreach ($children as $child) {
1418 $this->children->add($child);
1425 * Returns true if courses should be shown within categories on the navigation.
1429 protected function show_categories() {
1431 if ($this->showcategories === null) {
1432 $show = $this->page->context->contextlevel == CONTEXT_COURSECAT;
1433 $show = $show || (!empty($CFG->navshowcategories) && $DB->count_records('course_categories') > 1);
1434 $this->showcategories = $show;
1436 return $this->showcategories;
1440 * Checks the course format to see whether it wants the navigation to load
1441 * additional information for the course.
1443 * This function utilises a callback that can exist within the course format lib.php file
1444 * The callback should be a function called:
1445 * callback_{formatname}_display_content()
1446 * It doesn't get any arguments and should return true if additional content is
1447 * desired. If the callback doesn't exist we assume additional content is wanted.
1449 * @param string $format The course format
1452 protected function format_display_course_content($format) {
1454 $formatlib = $CFG->dirroot.'/course/format/'.$format.'/lib.php';
1455 if (file_exists($formatlib)) {
1456 require_once($formatlib);
1457 $displayfunc = 'callback_'.$format.'_display_content';
1458 if (function_exists($displayfunc) && !$displayfunc()) {
1459 return $displayfunc();
1466 * Loads the courses in Moodle into the navigation.
1468 * @param mixed $categoryids Either a string or array of category ids to load courses for
1469 * @return array An array of navigation_node
1471 protected function load_all_courses($categoryids=null) {
1472 global $CFG, $DB, $USER;
1474 if ($categoryids !== null) {
1475 if (is_array($categoryids)) {
1476 list ($categoryselect, $params) = $DB->get_in_or_equal($categoryids, SQL_PARAMS_NAMED, 'catid');
1478 $categoryselect = '= :categoryid';
1479 $params = array('categoryid', $categoryids);
1481 $params['siteid'] = SITEID;
1482 $categoryselect = ' AND c.category '.$categoryselect;
1484 $params = array('siteid' => SITEID);
1485 $categoryselect = '';
1488 $ccselect = context_helper::get_preload_record_columns_sql('ctx');
1489 $params['contextlevel'] = CONTEXT_COURSE;
1490 list($courseids, $courseparams) = $DB->get_in_or_equal(array_keys($this->addedcourses) + array(SITEID), SQL_PARAMS_NAMED, 'lcourse', false);
1491 $sql = "SELECT c.id, c.sortorder, c.visible, c.fullname, c.shortname, c.category, cat.path AS categorypath, $ccselect
1493 JOIN {context} ctx ON c.id = ctx.instanceid
1494 LEFT JOIN {course_categories} cat ON cat.id=c.category
1495 WHERE c.id {$courseids} AND
1496 ctx.contextlevel = :contextlevel
1498 ORDER BY c.sortorder ASC";
1500 if (!empty($CFG->navcourselimit)) {
1501 $limit = $CFG->navcourselimit;
1503 $courses = $DB->get_records_sql($sql, $params + $courseparams, 0, $limit);
1505 $coursenodes = array();
1506 foreach ($courses as $course) {
1507 context_helper::preload_from_record($course);
1508 $coursenodes[$course->id] = $this->add_course($course);
1510 return $coursenodes;
1514 * Loads all categories (top level or if an id is specified for that category)
1516 * @param int $categoryid The category id to load or null/0 to load all base level categories
1517 * @param bool $showbasecategories If set to true all base level categories will be loaded as well
1518 * as the requested category and any parent categories.
1519 * @return navigation_node|void returns a navigation node if a category has been loaded.
1521 protected function load_all_categories($categoryid = null, $showbasecategories = false) {
1524 // Check if this category has already been loaded
1525 if ($categoryid !== null && array_key_exists($categoryid, $this->addedcategories) && $this->addedcategories[$categoryid]->children->count() > 0) {
1526 return $this->addedcategories[$categoryid];
1529 $coursestoload = array();
1530 if (empty($categoryid)) { // can be 0
1531 // We are going to load all of the first level categories (categories without parents)
1532 $categories = $DB->get_records('course_categories', array('parent'=>'0'), 'sortorder ASC, id ASC');
1533 } else if (array_key_exists($categoryid, $this->addedcategories)) {
1534 // The category itself has been loaded already so we just need to ensure its subcategories
1536 list($sql, $params) = $DB->get_in_or_equal(array_keys($this->addedcategories), SQL_PARAMS_NAMED, 'parent', false);
1537 if ($showbasecategories) {
1538 // We need to include categories with parent = 0 as well
1540 FROM {course_categories} cc
1541 WHERE (parent = :categoryid OR parent = 0) AND
1543 ORDER BY depth DESC, sortorder ASC, id ASC";
1546 FROM {course_categories} cc
1547 WHERE parent = :categoryid AND
1549 ORDER BY depth DESC, sortorder ASC, id ASC";
1551 $params['categoryid'] = $categoryid;
1552 $categories = $DB->get_records_sql($sql, $params);
1553 if (count($categories) == 0) {
1554 // There are no further categories that require loading.
1558 // This category hasn't been loaded yet so we need to fetch it, work out its category path
1559 // and load this category plus all its parents and subcategories
1560 $category = $DB->get_record('course_categories', array('id' => $categoryid), 'path', MUST_EXIST);
1561 $coursestoload = explode('/', trim($category->path, '/'));
1562 list($select, $params) = $DB->get_in_or_equal($coursestoload);
1563 $select = 'id '.$select.' OR parent '.$select;
1564 if ($showbasecategories) {
1565 $select .= ' OR parent = 0';
1567 $params = array_merge($params, $params);
1568 $categories = $DB->get_records_select('course_categories', $select, $params, 'sortorder');
1571 // Now we have an array of categories we need to add them to the navigation.
1572 while (!empty($categories)) {
1573 $category = reset($categories);
1574 if (array_key_exists($category->id, $this->addedcategories)) {
1576 } else if ($category->parent == '0') {
1577 $this->add_category($category, $this->rootnodes['courses']);
1578 } else if (array_key_exists($category->parent, $this->addedcategories)) {
1579 $this->add_category($category, $this->addedcategories[$category->parent]);
1581 // This category isn't in the navigation and niether is it's parent (yet).
1582 // We need to go through the category path and add all of its components in order.
1583 $path = explode('/', trim($category->path, '/'));
1584 foreach ($path as $catid) {
1585 if (!array_key_exists($catid, $this->addedcategories)) {
1586 // This category isn't in the navigation yet so add it.
1587 $subcategory = $categories[$catid];
1588 if ($subcategory->parent == '0') {
1589 // Yay we have a root category - this likely means we will now be able
1590 // to add categories without problems.
1591 $this->add_category($subcategory, $this->rootnodes['courses']);
1592 } else if (array_key_exists($subcategory->parent, $this->addedcategories)) {
1593 // The parent is in the category (as we'd expect) so add it now.
1594 $this->add_category($subcategory, $this->addedcategories[$subcategory->parent]);
1595 // Remove the category from the categories array.
1596 unset($categories[$catid]);
1598 // We should never ever arrive here - if we have then there is a bigger
1600 throw new coding_exception('Category path order is incorrect and/or there are missing categories');
1605 // Remove the category from the categories array now that we know it has been added.
1606 unset($categories[$category->id]);
1608 // Check if there are any categories to load.
1609 if (count($coursestoload) > 0) {
1610 $this->load_all_courses($coursestoload);
1615 * Adds a structured category to the navigation in the correct order/place
1617 * @param stdClass $category
1618 * @param navigation_node $parent
1620 protected function add_category(stdClass $category, navigation_node $parent) {
1621 if (array_key_exists($category->id, $this->addedcategories)) {
1624 $url = new moodle_url('/course/category.php', array('id' => $category->id));
1625 $context = get_context_instance(CONTEXT_COURSECAT, $category->id);
1626 $categoryname = format_string($category->name, true, array('context' => $context));
1627 $categorynode = $parent->add($categoryname, $url, self::TYPE_CATEGORY, $categoryname, $category->id);
1628 if (empty($category->visible)) {
1629 if (has_capability('moodle/category:viewhiddencategories', get_system_context())) {
1630 $categorynode->hidden = true;
1632 $categorynode->display = false;
1635 $this->addedcategories[$category->id] = &$categorynode;
1639 * Loads the given course into the navigation
1641 * @param stdClass $course
1642 * @return navigation_node
1644 protected function load_course(stdClass $course) {
1645 if ($course->id == SITEID) {
1646 return $this->rootnodes['site'];
1647 } else if (array_key_exists($course->id, $this->addedcourses)) {
1648 return $this->addedcourses[$course->id];
1650 return $this->add_course($course);
1655 * Loads all of the courses section into the navigation.
1657 * This function utilisies a callback that can be implemented within the course
1658 * formats lib.php file to customise the navigation that is generated at this
1659 * point for the course.
1661 * By default (if not defined) the method {@link global_navigation::load_generic_course_sections()} is
1664 * @param stdClass $course Database record for the course
1665 * @param navigation_node $coursenode The course node within the navigation
1666 * @return array Array of navigation nodes for the section with key = section id
1668 protected function load_course_sections(stdClass $course, navigation_node $coursenode) {
1670 $structurefile = $CFG->dirroot.'/course/format/'.$course->format.'/lib.php';
1671 $structurefunc = 'callback_'.$course->format.'_load_content';
1672 if (function_exists($structurefunc)) {
1673 return $structurefunc($this, $course, $coursenode);
1674 } else if (file_exists($structurefile)) {
1675 require_once $structurefile;
1676 if (function_exists($structurefunc)) {
1677 return $structurefunc($this, $course, $coursenode);
1679 return $this->load_generic_course_sections($course, $coursenode);
1682 return $this->load_generic_course_sections($course, $coursenode);
1687 * Generates an array of sections and an array of activities for the given course.
1689 * This method uses the cache to improve performance and avoid the get_fast_modinfo call
1691 * @param stdClass $course
1692 * @return array Array($sections, $activities)
1694 protected function generate_sections_and_activities(stdClass $course) {
1696 require_once($CFG->dirroot.'/course/lib.php');
1698 $modinfo = get_fast_modinfo($course);
1700 $sections = array_slice(get_all_sections($course->id), 0, $course->numsections+1, true);
1701 $activities = array();
1703 foreach ($sections as $key => $section) {
1704 $sections[$key]->hasactivites = false;
1705 if (!array_key_exists($section->section, $modinfo->sections)) {
1708 foreach ($modinfo->sections[$section->section] as $cmid) {
1709 $cm = $modinfo->cms[$cmid];
1710 if (!$cm->uservisible) {
1713 $activity = new stdClass;
1714 $activity->id = $cm->id;
1715 $activity->course = $course->id;
1716 $activity->section = $section->section;
1717 $activity->name = $cm->name;
1718 $activity->icon = $cm->icon;
1719 $activity->iconcomponent = $cm->iconcomponent;
1720 $activity->hidden = (!$cm->visible);
1721 $activity->modname = $cm->modname;
1722 $activity->nodetype = navigation_node::NODETYPE_LEAF;
1723 $activity->onclick = $cm->get_on_click();
1724 $url = $cm->get_url();
1726 $activity->url = null;
1727 $activity->display = false;
1729 $activity->url = $cm->get_url()->out();
1730 $activity->display = true;
1731 if (self::module_extends_navigation($cm->modname)) {
1732 $activity->nodetype = navigation_node::NODETYPE_BRANCH;
1735 $activities[$cmid] = $activity;
1736 if ($activity->display) {
1737 $sections[$key]->hasactivites = true;
1742 return array($sections, $activities);
1746 * Generically loads the course sections into the course's navigation.
1748 * @param stdClass $course
1749 * @param navigation_node $coursenode
1750 * @param string $courseformat The course format
1751 * @return array An array of course section nodes
1753 public function load_generic_course_sections(stdClass $course, navigation_node $coursenode, $courseformat='unknown') {
1754 global $CFG, $DB, $USER;
1755 require_once($CFG->dirroot.'/course/lib.php');
1757 list($sections, $activities) = $this->generate_sections_and_activities($course);
1759 $namingfunction = 'callback_'.$courseformat.'_get_section_name';
1760 $namingfunctionexists = (function_exists($namingfunction));
1762 $viewhiddensections = has_capability('moodle/course:viewhiddensections', $this->page->context);
1764 $urlfunction = 'callback_'.$courseformat.'_get_section_url';
1765 if (function_exists($urlfunction)) {
1766 debugging('Depricated callback_'.$courseformat.'_get_section_url in use.
1767 Please switch your code to use the standard section url param');
1769 $urlfunction = null;
1773 if (defined('AJAX_SCRIPT') && AJAX_SCRIPT == '0' && $this->page->url->compare(new moodle_url('/course/view.php'), URL_MATCH_BASE)) {
1774 $key = optional_param('section', $key, PARAM_INT);
1777 $navigationsections = array();
1778 foreach ($sections as $sectionid => $section) {
1779 $section = clone($section);
1780 if ($course->id == SITEID) {
1781 $this->load_section_activities($coursenode, $section->section, $activities);
1783 if ((!$viewhiddensections && !$section->visible) || (!$this->showemptysections &&
1784 !$section->hasactivites && $this->includesectionnum !== $section->section)) {
1787 if ($namingfunctionexists) {
1788 $sectionname = $namingfunction($course, $section, $sections);
1790 $sectionname = get_string('section').' '.$section->section;
1795 // pre 2.3 style format url
1796 $url = $urlfunction($course->id, $section->section);
1798 if ($course->coursedisplay == COURSE_DISPLAY_MULTIPAGE) {
1799 $url = course_get_url($course, $section->section);
1802 $sectionnode = $coursenode->add($sectionname, $url, navigation_node::TYPE_SECTION, null, $section->id);
1803 $sectionnode->nodetype = navigation_node::NODETYPE_BRANCH;
1804 $sectionnode->hidden = (!$section->visible);
1805 if ($key != '0' && $section->section != '0' && $section->section == $key && $this->page->context->contextlevel != CONTEXT_MODULE && $section->hasactivites) {
1806 $sectionnode->make_active();
1807 $this->load_section_activities($sectionnode, $section->section, $activities);
1809 $section->sectionnode = $sectionnode;
1810 $navigationsections[$sectionid] = $section;
1813 return $navigationsections;
1816 * Loads all of the activities for a section into the navigation structure.
1818 * @param navigation_node $sectionnode
1819 * @param int $sectionnumber
1820 * @param array $activities An array of activites as returned by {@link global_navigation::generate_sections_and_activities()}
1821 * @param stdClass $course The course object the section and activities relate to.
1822 * @return array Array of activity nodes
1824 protected function load_section_activities(navigation_node $sectionnode, $sectionnumber, array $activities, $course = null) {
1826 // A static counter for JS function naming
1827 static $legacyonclickcounter = 0;
1829 $activitynodes = array();
1830 if (empty($activities)) {
1831 return $activitynodes;
1834 if (!is_object($course)) {
1835 $activity = reset($activities);
1836 $courseid = $activity->course;
1838 $courseid = $course->id;
1840 $showactivities = ($courseid != SITEID || !empty($CFG->navshowfrontpagemods));
1842 foreach ($activities as $activity) {
1843 if ($activity->section != $sectionnumber) {
1846 if ($activity->icon) {
1847 $icon = new pix_icon($activity->icon, get_string('modulename', $activity->modname), $activity->iconcomponent);
1849 $icon = new pix_icon('icon', get_string('modulename', $activity->modname), $activity->modname);
1852 // Prepare the default name and url for the node
1853 $activityname = format_string($activity->name, true, array('context' => get_context_instance(CONTEXT_MODULE, $activity->id)));
1854 $action = new moodle_url($activity->url);
1856 // Check if the onclick property is set (puke!)
1857 if (!empty($activity->onclick)) {
1858 // Increment the counter so that we have a unique number.
1859 $legacyonclickcounter++;
1860 // Generate the function name we will use
1861 $functionname = 'legacy_activity_onclick_handler_'.$legacyonclickcounter;
1862 $propogrationhandler = '';
1863 // Check if we need to cancel propogation. Remember inline onclick
1864 // events would return false if they wanted to prevent propogation and the
1866 if (strpos($activity->onclick, 'return false')) {
1867 $propogrationhandler = 'e.halt();';
1869 // Decode the onclick - it has already been encoded for display (puke)
1870 $onclick = htmlspecialchars_decode($activity->onclick);
1871 // Build the JS function the click event will call
1872 $jscode = "function {$functionname}(e) { $propogrationhandler $onclick }";
1873 $this->page->requires->js_init_code($jscode);
1874 // Override the default url with the new action link
1875 $action = new action_link($action, $activityname, new component_action('click', $functionname));
1878 $activitynode = $sectionnode->add($activityname, $action, navigation_node::TYPE_ACTIVITY, null, $activity->id, $icon);
1879 $activitynode->title(get_string('modulename', $activity->modname));
1880 $activitynode->hidden = $activity->hidden;
1881 $activitynode->display = $showactivities && $activity->display;
1882 $activitynode->nodetype = $activity->nodetype;
1883 $activitynodes[$activity->id] = $activitynode;
1886 return $activitynodes;
1889 * Loads a stealth module from unavailable section
1890 * @param navigation_node $coursenode
1891 * @param stdClass $modinfo
1892 * @return navigation_node or null if not accessible
1894 protected function load_stealth_activity(navigation_node $coursenode, $modinfo) {
1895 if (empty($modinfo->cms[$this->page->cm->id])) {
1898 $cm = $modinfo->cms[$this->page->cm->id];
1899 if (!$cm->uservisible) {
1903 $icon = new pix_icon($cm->icon, get_string('modulename', $cm->modname), $cm->iconcomponent);
1905 $icon = new pix_icon('icon', get_string('modulename', $cm->modname), $cm->modname);
1907 $url = $cm->get_url();
1908 $activitynode = $coursenode->add(format_string($cm->name), $url, navigation_node::TYPE_ACTIVITY, null, $cm->id, $icon);
1909 $activitynode->title(get_string('modulename', $cm->modname));
1910 $activitynode->hidden = (!$cm->visible);
1912 // Don't show activities that don't have links!
1913 $activitynode->display = false;
1914 } else if (self::module_extends_navigation($cm->modname)) {
1915 $activitynode->nodetype = navigation_node::NODETYPE_BRANCH;
1917 return $activitynode;
1920 * Loads the navigation structure for the given activity into the activities node.
1922 * This method utilises a callback within the modules lib.php file to load the
1923 * content specific to activity given.
1925 * The callback is a method: {modulename}_extend_navigation()
1927 * * {@link forum_extend_navigation()}
1928 * * {@link workshop_extend_navigation()}
1930 * @param cm_info|stdClass $cm
1931 * @param stdClass $course
1932 * @param navigation_node $activity
1935 protected function load_activity($cm, stdClass $course, navigation_node $activity) {
1938 // make sure we have a $cm from get_fast_modinfo as this contains activity access details
1939 if (!($cm instanceof cm_info)) {
1940 $modinfo = get_fast_modinfo($course);
1941 $cm = $modinfo->get_cm($cm->id);
1944 $activity->nodetype = navigation_node::NODETYPE_LEAF;
1945 $activity->make_active();
1946 $file = $CFG->dirroot.'/mod/'.$cm->modname.'/lib.php';
1947 $function = $cm->modname.'_extend_navigation';
1949 if (file_exists($file)) {
1950 require_once($file);
1951 if (function_exists($function)) {
1952 $activtyrecord = $DB->get_record($cm->modname, array('id' => $cm->instance), '*', MUST_EXIST);
1953 $function($activity, $course, $activtyrecord, $cm);
1957 // Allow the active advanced grading method plugin to append module navigation
1958 $featuresfunc = $cm->modname.'_supports';
1959 if (function_exists($featuresfunc) && $featuresfunc(FEATURE_ADVANCED_GRADING)) {
1960 require_once($CFG->dirroot.'/grade/grading/lib.php');
1961 $gradingman = get_grading_manager($cm->context, $cm->modname);
1962 $gradingman->extend_navigation($this, $activity);
1965 return $activity->has_children();
1968 * Loads user specific information into the navigation in the appropriate place.
1970 * If no user is provided the current user is assumed.
1972 * @param stdClass $user
1973 * @param bool $forceforcontext probably force something to be loaded somewhere (ask SamH if not sure what this means)
1976 protected function load_for_user($user=null, $forceforcontext=false) {
1977 global $DB, $CFG, $USER;
1979 if ($user === null) {
1980 // We can't require login here but if the user isn't logged in we don't
1981 // want to show anything
1982 if (!isloggedin() || isguestuser()) {
1986 } else if (!is_object($user)) {
1987 // If the user is not an object then get them from the database
1988 $select = context_helper::get_preload_record_columns_sql('ctx');
1989 $sql = "SELECT u.*, $select
1991 JOIN {context} ctx ON u.id = ctx.instanceid
1992 WHERE u.id = :userid AND
1993 ctx.contextlevel = :contextlevel";
1994 $user = $DB->get_record_sql($sql, array('userid' => (int)$user, 'contextlevel' => CONTEXT_USER), MUST_EXIST);
1995 context_helper::preload_from_record($user);
1998 $iscurrentuser = ($user->id == $USER->id);
2000 $usercontext = get_context_instance(CONTEXT_USER, $user->id);
2002 // Get the course set against the page, by default this will be the site
2003 $course = $this->page->course;
2004 $baseargs = array('id'=>$user->id);
2005 if ($course->id != SITEID && (!$iscurrentuser || $forceforcontext)) {
2006 $coursenode = $this->load_course($course);
2007 $baseargs['course'] = $course->id;
2008 $coursecontext = get_context_instance(CONTEXT_COURSE, $course->id);
2009 $issitecourse = false;
2011 // Load all categories and get the context for the system
2012 $coursecontext = get_context_instance(CONTEXT_SYSTEM);
2013 $issitecourse = true;
2016 // Create a node to add user information under.
2017 if ($iscurrentuser && !$forceforcontext) {
2018 // If it's the current user the information will go under the profile root node
2019 $usernode = $this->rootnodes['myprofile'];
2020 $course = get_site();
2021 $coursecontext = get_context_instance(CONTEXT_COURSE, $course->id);
2022 $issitecourse = true;
2024 if (!$issitecourse) {
2025 // Not the current user so add it to the participants node for the current course
2026 $usersnode = $coursenode->get('participants', navigation_node::TYPE_CONTAINER);
2027 $userviewurl = new moodle_url('/user/view.php', $baseargs);
2029 // This is the site so add a users node to the root branch
2030 $usersnode = $this->rootnodes['users'];
2031 if (has_capability('moodle/course:viewparticipants', $coursecontext)) {
2032 $usersnode->action = new moodle_url('/user/index.php', array('id'=>$course->id));
2034 $userviewurl = new moodle_url('/user/profile.php', $baseargs);
2037 // We should NEVER get here, if the course hasn't been populated
2038 // with a participants node then the navigaiton either wasn't generated
2039 // for it (you are missing a require_login or set_context call) or
2040 // you don't have access.... in the interests of no leaking informatin
2041 // we simply quit...
2044 // Add a branch for the current user
2045 $canseefullname = has_capability('moodle/site:viewfullnames', $coursecontext);
2046 $usernode = $usersnode->add(fullname($user, $canseefullname), $userviewurl, self::TYPE_USER, null, $user->id);
2048 if ($this->page->context->contextlevel == CONTEXT_USER && $user->id == $this->page->context->instanceid) {
2049 $usernode->make_active();
2053 // If the user is the current user or has permission to view the details of the requested
2054 // user than add a view profile link.
2055 if ($iscurrentuser || has_capability('moodle/user:viewdetails', $coursecontext) || has_capability('moodle/user:viewdetails', $usercontext)) {
2056 if ($issitecourse || ($iscurrentuser && !$forceforcontext)) {
2057 $usernode->add(get_string('viewprofile'), new moodle_url('/user/profile.php',$baseargs));
2059 $usernode->add(get_string('viewprofile'), new moodle_url('/user/view.php',$baseargs));
2063 if (!empty($CFG->navadduserpostslinks)) {
2064 // Add nodes for forum posts and discussions if the user can view either or both
2065 // There are no capability checks here as the content of the page is based
2066 // purely on the forums the current user has access too.
2067 $forumtab = $usernode->add(get_string('forumposts', 'forum'));
2068 $forumtab->add(get_string('posts', 'forum'), new moodle_url('/mod/forum/user.php', $baseargs));
2069 $forumtab->add(get_string('discussions', 'forum'), new moodle_url('/mod/forum/user.php', array_merge($baseargs, array('mode'=>'discussions'))));
2073 if (!empty($CFG->bloglevel)) {
2074 if (!$this->cache->cached('userblogoptions'.$user->id)) {
2075 require_once($CFG->dirroot.'/blog/lib.php');
2076 // Get all options for the user
2077 $options = blog_get_options_for_user($user);
2078 $this->cache->set('userblogoptions'.$user->id, $options);
2080 $options = $this->cache->{'userblogoptions'.$user->id};
2083 if (count($options) > 0) {
2084 $blogs = $usernode->add(get_string('blogs', 'blog'), null, navigation_node::TYPE_CONTAINER);
2085 foreach ($options as $type => $option) {
2086 if ($type == "rss") {
2087 $blogs->add($option['string'], $option['link'], settings_navigation::TYPE_SETTING, null, null, new pix_icon('i/rss', ''));
2089 $blogs->add($option['string'], $option['link']);
2095 if (!empty($CFG->messaging)) {
2096 $messageargs = null;
2097 if ($USER->id!=$user->id) {
2098 $messageargs = array('id'=>$user->id);
2100 $url = new moodle_url('/message/index.php',$messageargs);
2101 $usernode->add(get_string('messages', 'message'), $url, self::TYPE_SETTING, null, 'messages');
2104 $context = get_context_instance(CONTEXT_USER, $USER->id);
2105 if ($iscurrentuser && has_capability('moodle/user:manageownfiles', $context)) {
2106 $url = new moodle_url('/user/files.php');
2107 $usernode->add(get_string('myfiles'), $url, self::TYPE_SETTING);
2110 // Add a node to view the users notes if permitted
2111 if (!empty($CFG->enablenotes) && has_any_capability(array('moodle/notes:manage', 'moodle/notes:view'), $coursecontext)) {
2112 $url = new moodle_url('/notes/index.php',array('user'=>$user->id));
2113 if ($coursecontext->instanceid) {
2114 $url->param('course', $coursecontext->instanceid);
2116 $usernode->add(get_string('notes', 'notes'), $url);
2120 $reporttab = $usernode->add(get_string('activityreports'));
2121 $reports = get_plugin_list_with_function('report', 'extend_navigation_user', 'lib.php');
2122 foreach ($reports as $reportfunction) {
2123 $reportfunction($reporttab, $user, $course);
2125 $anyreport = has_capability('moodle/user:viewuseractivitiesreport', $usercontext);
2126 if ($anyreport || ($course->showreports && $iscurrentuser && $forceforcontext)) {
2127 // Add grade hardcoded grade report if necessary
2128 $gradeaccess = false;
2129 if (has_capability('moodle/grade:viewall', $coursecontext)) {
2130 //ok - can view all course grades
2131 $gradeaccess = true;
2132 } else if ($course->showgrades) {
2133 if ($iscurrentuser && has_capability('moodle/grade:view', $coursecontext)) {
2134 //ok - can view own grades
2135 $gradeaccess = true;
2136 } else if (has_capability('moodle/grade:viewall', $usercontext)) {
2137 // ok - can view grades of this user - parent most probably
2138 $gradeaccess = true;
2139 } else if ($anyreport) {
2140 // ok - can view grades of this user - parent most probably
2141 $gradeaccess = true;
2145 $reporttab->add(get_string('grade'), new moodle_url('/course/user.php', array('mode'=>'grade', 'id'=>$course->id, 'user'=>$usercontext->instanceid)));
2148 // Check the number of nodes in the report node... if there are none remove the node
2149 $reporttab->trim_if_empty();
2151 // If the user is the current user add the repositories for the current user
2152 $hiddenfields = array_flip(explode(',', $CFG->hiddenuserfields));
2153 if ($iscurrentuser) {
2154 if (!$this->cache->cached('contexthasrepos'.$usercontext->id)) {
2155 require_once($CFG->dirroot . '/repository/lib.php');
2156 $editabletypes = repository::get_editable_types($usercontext);
2157 $haseditabletypes = !empty($editabletypes);
2158 unset($editabletypes);
2159 $this->cache->set('contexthasrepos'.$usercontext->id, $haseditabletypes);
2161 $haseditabletypes = $this->cache->{'contexthasrepos'.$usercontext->id};
2163 if ($haseditabletypes) {
2164 $usernode->add(get_string('repositories', 'repository'), new moodle_url('/repository/manage_instances.php', array('contextid' => $usercontext->id)));
2166 } else if ($course->id == SITEID && has_capability('moodle/user:viewdetails', $usercontext) && (!in_array('mycourses', $hiddenfields) || has_capability('moodle/user:viewhiddendetails', $coursecontext))) {
2168 // Add view grade report is permitted
2169 $reports = get_plugin_list('gradereport');
2170 arsort($reports); // user is last, we want to test it first
2172 $userscourses = enrol_get_users_courses($user->id);
2173 $userscoursesnode = $usernode->add(get_string('courses'));
2175 foreach ($userscourses as $usercourse) {
2176 $usercoursecontext = get_context_instance(CONTEXT_COURSE, $usercourse->id);
2177 $usercourseshortname = format_string($usercourse->shortname, true, array('context' => $usercoursecontext));
2178 $usercoursenode = $userscoursesnode->add($usercourseshortname, new moodle_url('/user/view.php', array('id'=>$user->id, 'course'=>$usercourse->id)), self::TYPE_CONTAINER);
2180 $gradeavailable = has_capability('moodle/grade:viewall', $usercoursecontext);
2181 if (!$gradeavailable && !empty($usercourse->showgrades) && is_array($reports) && !empty($reports)) {
2182 foreach ($reports as $plugin => $plugindir) {
2183 if (has_capability('gradereport/'.$plugin.':view', $usercoursecontext)) {
2184 //stop when the first visible plugin is found
2185 $gradeavailable = true;
2191 if ($gradeavailable) {
2192 $url = new moodle_url('/grade/report/index.php', array('id'=>$usercourse->id));
2193 $usercoursenode->add(get_string('grades'), $url, self::TYPE_SETTING, null, null, new pix_icon('i/grades', ''));
2196 // Add a node to view the users notes if permitted
2197 if (!empty($CFG->enablenotes) && has_any_capability(array('moodle/notes:manage', 'moodle/notes:view'), $usercoursecontext)) {
2198 $url = new moodle_url('/notes/index.php',array('user'=>$user->id, 'course'=>$usercourse->id));
2199 $usercoursenode->add(get_string('notes', 'notes'), $url, self::TYPE_SETTING);
2202 if (can_access_course($usercourse, $user->id)) {
2203 $usercoursenode->add(get_string('entercourse'), new moodle_url('/course/view.php', array('id'=>$usercourse->id)), self::TYPE_SETTING, null, null, new pix_icon('i/course', ''));
2206 $reporttab = $usercoursenode->add(get_string('activityreports'));
2208 $reports = get_plugin_list_with_function('report', 'extend_navigation_user', 'lib.php');
2209 foreach ($reports as $reportfunction) {
2210 $reportfunction($reporttab, $user, $usercourse);
2213 $reporttab->trim_if_empty();
2220 * This method simply checks to see if a given module can extend the navigation.
2222 * @todo (MDL-25290) A shared caching solution should be used to save details on what extends navigation.
2224 * @param string $modname
2227 protected static function module_extends_navigation($modname) {
2229 static $extendingmodules = array();
2230 if (!array_key_exists($modname, $extendingmodules)) {
2231 $extendingmodules[$modname] = false;
2232 $file = $CFG->dirroot.'/mod/'.$modname.'/lib.php';
2233 if (file_exists($file)) {
2234 $function = $modname.'_extend_navigation';
2235 require_once($file);
2236 $extendingmodules[$modname] = (function_exists($function));
2239 return $extendingmodules[$modname];
2242 * Extends the navigation for the given user.
2244 * @param stdClass $user A user from the database
2246 public function extend_for_user($user) {
2247 $this->extendforuser[] = $user;
2251 * Returns all of the users the navigation is being extended for
2253 * @return array An array of extending users.
2255 public function get_extending_users() {
2256 return $this->extendforuser;
2259 * Adds the given course to the navigation structure.
2261 * @param stdClass $course
2262 * @param bool $forcegeneric (optional)
2263 * @param bool $ismycourse (optional)
2264 * @return navigation_node
2266 public function add_course(stdClass $course, $forcegeneric = false, $ismycourse = false) {
2269 // We found the course... we can return it now :)
2270 if (!$forcegeneric && array_key_exists($course->id, $this->addedcourses)) {
2271 return $this->addedcourses[$course->id];
2274 $coursecontext = get_context_instance(CONTEXT_COURSE, $course->id);
2276 if ($course->id != SITEID && !$course->visible) {
2277 if (is_role_switched($course->id)) {
2278 // user has to be able to access course in order to switch, let's skip the visibility test here
2279 } else if (!has_capability('moodle/course:viewhiddencourses', $coursecontext)) {
2284 $issite = ($course->id == SITEID);
2285 $ismycourse = ($ismycourse && !$forcegeneric);
2286 $shortname = format_string($course->shortname, true, array('context' => $coursecontext));
2291 if (empty($CFG->usesitenameforsitepages)) {
2292 $shortname = get_string('sitepages');
2294 } else if ($ismycourse) {
2295 if (!empty($CFG->navshowmycoursecategories) && ($parent = $this->rootnodes['mycourses']->find($course->category, self::TYPE_CATEGORY))) {
2296 // Nothing to do here the above statement set $parent to the category within mycourses.
2298 $parent = $this->rootnodes['mycourses'];
2300 $url = new moodle_url('/course/view.php', array('id'=>$course->id));
2302 $parent = $this->rootnodes['courses'];
2303 $url = new moodle_url('/course/view.php', array('id'=>$course->id));
2306 if (!$ismycourse && !$issite && !empty($course->category)) {
2307 if ($this->show_categories()) {
2308 // We need to load the category structure for this course
2309 $this->load_all_categories($course->category);
2311 if (array_key_exists($course->category, $this->addedcategories)) {
2312 $parent = $this->addedcategories[$course->category];
2313 // This could lead to the course being created so we should check whether it is the case again
2314 if (!$forcegeneric && array_key_exists($course->id, $this->addedcourses)) {
2315 return $this->addedcourses[$course->id];
2320 $coursenode = $parent->add($shortname, $url, self::TYPE_COURSE, $shortname, $course->id);
2321 $coursenode->nodetype = self::NODETYPE_BRANCH;
2322 $coursenode->hidden = (!$course->visible);
2323 $coursenode->title(format_string($course->fullname, true, array('context' => get_context_instance(CONTEXT_COURSE, $course->id))));
2324 if (!$forcegeneric) {
2325 $this->addedcourses[$course->id] = &$coursenode;
2327 if ($ismycourse && !empty($CFG->navshowallcourses)) {
2328 // We need to add this course to the general courses node as well as the
2329 // my courses node, rerun the function with the kill param
2330 $genericcourse = $this->add_course($course, true);
2331 if ($genericcourse->isactive) {
2332 $genericcourse->make_inactive();
2333 $genericcourse->collapse = true;
2334 if ($genericcourse->parent && $genericcourse->parent->type == self::TYPE_CATEGORY) {
2335 $parent = $genericcourse->parent;
2336 while ($parent && $parent->type == self::TYPE_CATEGORY) {
2337 $parent->collapse = true;
2338 $parent = $parent->parent;
2347 * Adds essential course nodes to the navigation for the given course.
2349 * This method adds nodes such as reports, blogs and participants
2351 * @param navigation_node $coursenode
2352 * @param stdClass $course
2353 * @return bool returns true on successful addition of a node.
2355 public function add_course_essentials($coursenode, stdClass $course) {
2358 if ($course->id == SITEID) {
2359 return $this->add_front_page_course_essentials($coursenode, $course);
2362 if ($coursenode == false || !($coursenode instanceof navigation_node) || $coursenode->get('participants', navigation_node::TYPE_CONTAINER)) {
2367 if (has_capability('moodle/course:viewparticipants', $this->page->context)) {
2368 $participants = $coursenode->add(get_string('participants'), new moodle_url('/user/index.php?id='.$course->id), self::TYPE_CONTAINER, get_string('participants'), 'participants');
2369 $currentgroup = groups_get_course_group($course, true);
2370 if ($course->id == SITEID) {
2372 } else if ($course->id && !$currentgroup) {
2373 $filterselect = $course->id;
2375 $filterselect = $currentgroup;
2377 $filterselect = clean_param($filterselect, PARAM_INT);
2378 if (($CFG->bloglevel == BLOG_GLOBAL_LEVEL or ($CFG->bloglevel == BLOG_SITE_LEVEL and (isloggedin() and !isguestuser())))
2379 and has_capability('moodle/blog:view', get_context_instance(CONTEXT_SYSTEM))) {
2380 $blogsurls = new moodle_url('/blog/index.php', array('courseid' => $filterselect));
2381 $participants->add(get_string('blogscourse','blog'), $blogsurls->out());
2383 if (!empty($CFG->enablenotes) && (has_capability('moodle/notes:manage', $this->page->context) || has_capability('moodle/notes:view', $this->page->context))) {
2384 $participants->add(get_string('notes','notes'), new moodle_url('/notes/index.php', array('filtertype'=>'course', 'filterselect'=>$course->id)));
2386 } else if (count($this->extendforuser) > 0 || $this->page->course->id == $course->id) {
2387 $participants = $coursenode->add(get_string('participants'), null, self::TYPE_CONTAINER, get_string('participants'), 'participants');
2390 // View course reports
2391 if (has_capability('moodle/site:viewreports', $this->page->context)) { // basic capability for listing of reports
2392 $reportnav = $coursenode->add(get_string('reports'), null, self::TYPE_CONTAINER, null, null, new pix_icon('i/stats', ''));
2393 $coursereports = get_plugin_list('coursereport'); // deprecated
2394 foreach ($coursereports as $report=>$dir) {
2395 $libfile = $CFG->dirroot.'/course/report/'.$report.'/lib.php';
2396 if (file_exists($libfile)) {
2397 require_once($libfile);
2398 $reportfunction = $report.'_report_extend_navigation';
2399 if (function_exists($report.'_report_extend_navigation')) {
2400 $reportfunction($reportnav, $course, $this->page->context);
2405 $reports = get_plugin_list_with_function('report', 'extend_navigation_course', 'lib.php');
2406 foreach ($reports as $reportfunction) {
2407 $reportfunction($reportnav, $course, $this->page->context);
2413 * This generates the structure of the course that won't be generated when
2414 * the modules and sections are added.
2416 * Things such as the reports branch, the participants branch, blogs... get
2417 * added to the course node by this method.
2419 * @param navigation_node $coursenode
2420 * @param stdClass $course
2421 * @return bool True for successfull generation
2423 public function add_front_page_course_essentials(navigation_node $coursenode, stdClass $course) {
2426 if ($coursenode == false || $coursenode->get('frontpageloaded', navigation_node::TYPE_CUSTOM)) {
2430 // Hidden node that we use to determine if the front page navigation is loaded.
2431 // This required as there are not other guaranteed nodes that may be loaded.
2432 $coursenode->add('frontpageloaded', null, self::TYPE_CUSTOM, null, 'frontpageloaded')->display = false;
2435 if (has_capability('moodle/course:viewparticipants', get_system_context())) {
2436 $coursenode->add(get_string('participants'), new moodle_url('/user/index.php?id='.$course->id), self::TYPE_CUSTOM, get_string('participants'), 'participants');
2442 if (!empty($CFG->bloglevel)
2443 and ($CFG->bloglevel == BLOG_GLOBAL_LEVEL or ($CFG->bloglevel == BLOG_SITE_LEVEL and (isloggedin() and !isguestuser())))
2444 and has_capability('moodle/blog:view', get_context_instance(CONTEXT_SYSTEM))) {
2445 $blogsurls = new moodle_url('/blog/index.php', array('courseid' => $filterselect));
2446 $coursenode->add(get_string('blogssite','blog'), $blogsurls->out());
2450 if (!empty($CFG->enablenotes) && (has_capability('moodle/notes:manage', $this->page->context) || has_capability('moodle/notes:view', $this->page->context))) {
2451 $coursenode->add(get_string('notes','notes'), new moodle_url('/notes/index.php', array('filtertype'=>'course', 'filterselect'=>$filterselect)));
2455 if (!empty($CFG->usetags) && isloggedin()) {
2456 $coursenode->add(get_string('tags', 'tag'), new moodle_url('/tag/search.php'));
2461 $calendarurl = new moodle_url('/calendar/view.php', array('view' => 'month'));
2462 $coursenode->add(get_string('calendar', 'calendar'), $calendarurl, self::TYPE_CUSTOM, null, 'calendar');
2465 // View course reports
2466 if (has_capability('moodle/site:viewreports', $this->page->context)) { // basic capability for listing of reports
2467 $reportnav = $coursenode->add(get_string('reports'), null, self::TYPE_CONTAINER, null, null, new pix_icon('i/stats', ''));
2468 $coursereports = get_plugin_list('coursereport'); // deprecated
2469 foreach ($coursereports as $report=>$dir) {
2470 $libfile = $CFG->dirroot.'/course/report/'.$report.'/lib.php';
2471 if (file_exists($libfile)) {
2472 require_once($libfile);
2473 $reportfunction = $report.'_report_extend_navigation';
2474 if (function_exists($report.'_report_extend_navigation')) {
2475 $reportfunction($reportnav, $course, $this->page->context);
2480 $reports = get_plugin_list_with_function('report', 'extend_navigation_course', 'lib.php');
2481 foreach ($reports as $reportfunction) {
2482 $reportfunction($reportnav, $course, $this->page->context);
2489 * Clears the navigation cache
2491 public function clear_cache() {
2492 $this->cache->clear();
2496 * Sets an expansion limit for the navigation
2498 * The expansion limit is used to prevent the display of content that has a type
2499 * greater than the provided $type.
2501 * Can be used to ensure things such as activities or activity content don't get
2502 * shown on the navigation.
2503 * They are still generated in order to ensure the navbar still makes sense.
2505 * @param int $type One of navigation_node::TYPE_*
2506 * @return bool true when complete.
2508 public function set_expansion_limit($type) {
2509 $nodes = $this->find_all_of_type($type);
2510 foreach ($nodes as &$node) {
2511 // We need to generate the full site node
2512 if ($type == self::TYPE_COURSE && $node->key == SITEID) {
2515 foreach ($node->children as &$child) {
2516 // We still want to show course reports and participants containers
2517 // or there will be navigation missing.
2518 if ($type == self::TYPE_COURSE && $child->type === self::TYPE_CONTAINER) {
2521 $child->display = false;
2527 * Attempts to get the navigation with the given key from this nodes children.
2529 * This function only looks at this nodes children, it does NOT look recursivily.
2530 * If the node can't be found then false is returned.
2532 * If you need to search recursivily then use the {@link global_navigation::find()} method.
2534 * Note: If you are trying to set the active node {@link navigation_node::override_active_url()}
2535 * may be of more use to you.
2537 * @param string|int $key The key of the node you wish to receive.
2538 * @param int $type One of navigation_node::TYPE_*
2539 * @return navigation_node|false
2541 public function get($key, $type = null) {
2542 if (!$this->initialised) {
2543 $this->initialise();
2545 return parent::get($key, $type);
2549 * Searches this nodes children and their children to find a navigation node
2550 * with the matching key and type.
2552 * This method is recursive and searches children so until either a node is
2553 * found or there are no more nodes to search.
2555 * If you know that the node being searched for is a child of this node
2556 * then use the {@link global_navigation::get()} method instead.
2558 * Note: If you are trying to set the active node {@link navigation_node::override_active_url()}
2559 * may be of more use to you.
2561 * @param string|int $key The key of the node you wish to receive.
2562 * @param int $type One of navigation_node::TYPE_*
2563 * @return navigation_node|false
2565 public function find($key, $type) {
2566 if (!$this->initialised) {
2567 $this->initialise();
2569 return parent::find($key, $type);
2574 * The limited global navigation class used for the AJAX extension of the global
2577 * The primary methods that are used in the global navigation class have been overriden
2578 * to ensure that only the relevant branch is generated at the root of the tree.
2579 * This can be done because AJAX is only used when the backwards structure for the
2580 * requested branch exists.
2581 * This has been done only because it shortens the amounts of information that is generated
2582 * which of course will speed up the response time.. because no one likes laggy AJAX.
2585 * @category navigation
2586 * @copyright 2009 Sam Hemelryk
2587 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
2589 class global_navigation_for_ajax extends global_navigation {
2591 /** @var int used for determining what type of navigation_node::TYPE_* is being used */
2592 protected $branchtype;
2594 /** @var int the instance id */
2595 protected $instanceid;
2597 /** @var array Holds an array of expandable nodes */
2598 protected $expandable = array();
2601 * Constructs the navigation for use in an AJAX request
2603 * @param moodle_page $page moodle_page object
2604 * @param int $branchtype
2607 public function __construct($page, $branchtype, $id) {
2608 $this->page = $page;
2609 $this->cache = new navigation_cache(NAVIGATION_CACHE_NAME);
2610 $this->children = new navigation_node_collection();
2611 $this->branchtype = $branchtype;
2612 $this->instanceid = $id;
2613 $this->initialise();
2616 * Initialise the navigation given the type and id for the branch to expand.
2618 * @return array An array of the expandable nodes
2620 public function initialise() {
2621 global $CFG, $DB, $SITE;
2623 if ($this->initialised || during_initial_install()) {
2624 return $this->expandable;
2626 $this->initialised = true;
2628 $this->rootnodes = array();
2629 $this->rootnodes['site'] = $this->add_course($SITE);
2630 $this->rootnodes['courses'] = $this->add(get_string('courses'), null, self::TYPE_ROOTNODE, null, 'courses');
2632 // Branchtype will be one of navigation_node::TYPE_*
2633 switch ($this->branchtype) {
2634 case self::TYPE_CATEGORY :
2635 $this->load_all_categories($this->instanceid);
2637 if (!empty($CFG->navcourselimit)) {
2638 $limit = (int)$CFG->navcourselimit;
2640 $courses = $DB->get_records('course', array('category' => $this->instanceid), 'sortorder','*', 0, $limit);
2641 foreach ($courses as $course) {
2642 $this->add_course($course);
2645 case self::TYPE_COURSE :
2646 $course = $DB->get_record('course', array('id' => $this->instanceid), '*', MUST_EXIST);
2647 require_course_login($course, true, null, false, true);
2648 $this->page->set_context(get_context_instance(CONTEXT_COURSE, $course->id));
2649 $coursenode = $this->add_course($course);
2650 $this->add_course_essentials($coursenode, $course);
2651 if ($this->format_display_course_content($course->format)) {
2652 $this->load_course_sections($course, $coursenode);
2655 case self::TYPE_SECTION :
2656 $sql = 'SELECT c.*, cs.section AS sectionnumber
2658 LEFT JOIN {course_sections} cs ON cs.course = c.id
2660 $course = $DB->get_record_sql($sql, array($this->instanceid), MUST_EXIST);
2661 require_course_login($course, true, null, false, true);
2662 $this->page->set_context(get_context_instance(CONTEXT_COURSE, $course->id));
2663 $coursenode = $this->add_course($course);
2664 $this->add_course_essentials($coursenode, $course);
2665 $sections = $this->load_course_sections($course, $coursenode);
2666 list($sectionarray, $activities) = $this->generate_sections_and_activities($course);
2667 $this->load_section_activities($sections[$course->sectionnumber]->sectionnode, $course->sectionnumber, $activities);
2669 case self::TYPE_ACTIVITY :
2672 JOIN {course_modules} cm ON cm.course = c.id
2673 WHERE cm.id = :cmid";
2674 $params = array('cmid' => $this->instanceid);
2675 $course = $DB->get_record_sql($sql, $params, MUST_EXIST);
2676 $modinfo = get_fast_modinfo($course);
2677 $cm = $modinfo->get_cm($this->instanceid);
2678 require_course_login($course, true, $cm, false, true);
2679 $this->page->set_context(get_context_instance(CONTEXT_MODULE, $cm->id));
2680 $coursenode = $this->load_course($course);
2681 if ($course->id == SITEID) {
2682 $modulenode = $this->load_activity($cm, $course, $coursenode->find($cm->id, self::TYPE_ACTIVITY));
2684 $sections = $this->load_course_sections($course, $coursenode);
2685 list($sectionarray, $activities) = $this->generate_sections_and_activities($course);
2686 $activities = $this->load_section_activities($sections[$cm->sectionnum]->sectionnode, $cm->sectionnum, $activities);
2687 $modulenode = $this->load_activity($cm, $course, $activities[$cm->id]);
2691 throw new Exception('Unknown type');
2692 return $this->expandable;
2695 if ($this->page->context->contextlevel == CONTEXT_COURSE && $this->page->context->instanceid != SITEID) {
2696 $this->load_for_user(null, true);
2699 $this->find_expandable($this->expandable);
2700 return $this->expandable;
2704 * Returns an array of expandable nodes
2707 public function get_expandable() {
2708 return $this->expandable;
2715 * This class is used to manage the navbar, which is initialised from the navigation
2716 * object held by PAGE
2719 * @category navigation
2720 * @copyright 2009 Sam Hemelryk
2721 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
2723 class navbar extends navigation_node {
2724 /** @var bool A switch for whether the navbar is initialised or not */
2725 protected $initialised = false;
2726 /** @var mixed keys used to reference the nodes on the navbar */
2727 protected $keys = array();
2728 /** @var null|string content of the navbar */
2729 protected $content = null;
2730 /** @var moodle_page object the moodle page that this navbar belongs to */
2732 /** @var bool A switch for whether to ignore the active navigation information */
2733 protected $ignoreactive = false;
2734 /** @var bool A switch to let us know if we are in the middle of an install */
2735 protected $duringinstall = false;
2736 /** @var bool A switch for whether the navbar has items */
2737 protected $hasitems = false;
2738 /** @var array An array of navigation nodes for the navbar */
2740 /** @var array An array of child node objects */
2741 public $children = array();
2742 /** @var bool A switch for whether we want to include the root node in the navbar */
2743 public $includesettingsbase = false;
2745 * The almighty constructor
2747 * @param moodle_page $page
2749 public function __construct(moodle_page $page) {
2751 if (during_initial_install()) {
2752 $this->duringinstall = true;
2755 $this->page = $page;
2756 $this->text = get_string('home');
2757 $this->shorttext = get_string('home');
2758 $this->action = new moodle_url($CFG->wwwroot);
2759 $this->nodetype = self::NODETYPE_BRANCH;
2760 $this->type = self::TYPE_SYSTEM;
2764 * Quick check to see if the navbar will have items in.
2766 * @return bool Returns true if the navbar will have items, false otherwise
2768 public function has_items() {
2769 if ($this->duringinstall) {
2771 } else if ($this->hasitems !== false) {
2774 $this->page->navigation->initialise($this->page);
2776 $activenodefound = ($this->page->navigation->contains_active_node() ||
2777 $this->page->settingsnav->contains_active_node());
2779 $outcome = (count($this->children)>0 || (!$this->ignoreactive && $activenodefound));
2780 $this->hasitems = $outcome;
2785 * Turn on/off ignore active
2787 * @param bool $setting
2789 public function ignore_active($setting=true) {
2790 $this->ignoreactive = ($setting);
2794 * Gets a navigation node
2796 * @param string|int $key for referencing the navbar nodes
2797 * @param int $type navigation_node::TYPE_*
2798 * @return navigation_node|bool
2800 public function get($key, $type = null) {
2801 foreach ($this->children as &$child) {
2802 if ($child->key === $key && ($type == null || $type == $child->type)) {
2809 * Returns an array of navigation_node's that make up the navbar.
2813 public function get_items() {
2815 // Make sure that navigation is initialised
2816 if (!$this->has_items()) {
2819 if ($this->items !== null) {
2820 return $this->items;
2823 if (count($this->children) > 0) {
2824 // Add the custom children
2825 $items = array_reverse($this->children);
2828 $navigationactivenode = $this->page->navigation->find_active_node();
2829 $settingsactivenode = $this->page->settingsnav->find_active_node();
2831 // Check if navigation contains the active node
2832 if (!$this->ignoreactive) {
2834 if ($navigationactivenode && $settingsactivenode) {
2835 // Parse a combined navigation tree
2836 while ($settingsactivenode && $settingsactivenode->parent !== null) {
2837 if (!$settingsactivenode->mainnavonly) {
2838 $items[] = $settingsactivenode;
2840 $settingsactivenode = $settingsactivenode->parent;
2842 if (!$this->includesettingsbase) {
2843 // Removes the first node from the settings (root node) from the list
2846 while ($navigationactivenode && $navigationactivenode->parent !== null) {
2847 if (!$navigationactivenode->mainnavonly) {
2848 $items[] = $navigationactivenode;
2850 $navigationactivenode = $navigationactivenode->parent;
2852 } else if ($navigationactivenode) {
2853 // Parse the navigation tree to get the active node
2854 while ($navigationactivenode && $navigationactivenode->parent !== null) {
2855 if (!$navigationactivenode->mainnavonly) {
2856 $items[] = $navigationactivenode;
2858 $navigationactivenode = $navigationactivenode->parent;
2860 } else if ($settingsactivenode) {
2861 // Parse the settings navigation to get the active node
2862 while ($settingsactivenode && $settingsactivenode->parent !== null) {
2863 if (!$settingsactivenode->mainnavonly) {
2864 $items[] = $settingsactivenode;
2866 $settingsactivenode = $settingsactivenode->parent;
2871 $items[] = new navigation_node(array(
2872 'text'=>$this->page->navigation->text,
2873 'shorttext'=>$this->page->navigation->shorttext,
2874 'key'=>$this->page->navigation->key,
2875 'action'=>$this->page->navigation->action
2878 $this->items = array_reverse($items);
2879 return $this->items;
2883 * Add a new navigation_node to the navbar, overrides parent::add
2885 * This function overrides {@link navigation_node::add()} so that we can change
2886 * the way nodes get added to allow us to simply call add and have the node added to the
2889 * @param string $text
2890 * @param string|moodle_url $action
2892 * @param string|int $key
2893 * @param string $shorttext
2894 * @param string $icon
2895 * @return navigation_node
2897 public function add($text, $action=null, $type=self::TYPE_CUSTOM, $shorttext=null, $key=null, pix_icon $icon=null) {
2898 if ($this->content !== null) {
2899 debugging('Nav bar items must be printed before $OUTPUT->header() has been called', DEBUG_DEVELOPER);
2902 // Properties array used when creating the new navigation node
2907 // Set the action if one was provided
2908 if ($action!==null) {
2909 $itemarray['action'] = $action;
2911 // Set the shorttext if one was provided
2912 if ($shorttext!==null) {
2913 $itemarray['shorttext'] = $shorttext;
2915 // Set the icon if one was provided
2917 $itemarray['icon'] = $icon;
2919 // Default the key to the number of children if not provided
2920 if ($key === null) {
2921 $key = count($this->children);
2924 $itemarray['key'] = $key;
2925 // Set the parent to this node
2926 $itemarray['parent'] = $this;
2927 // Add the child using the navigation_node_collections add method
2928 $this->children[] = new navigation_node($itemarray);
2934 * Class used to manage the settings option for the current page
2936 * This class is used to manage the settings options in a tree format (recursively)
2937 * and was created initially for use with the settings blocks.
2940 * @category navigation
2941 * @copyright 2009 Sam Hemelryk
2942 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
2944 class settings_navigation extends navigation_node {
2945 /** @var stdClass the current context */
2947 /** @var moodle_page the moodle page that the navigation belongs to */
2949 /** @var string contains administration section navigation_nodes */
2950 protected $adminsection;
2951 /** @var bool A switch to see if the navigation node is initialised */
2952 protected $initialised = false;
2953 /** @var array An array of users that the nodes can extend for. */
2954 protected $userstoextendfor = array();
2955 /** @var navigation_cache **/
2959 * Sets up the object with basic settings and preparse it for use
2961 * @param moodle_page $page
2963 public function __construct(moodle_page &$page) {
2964 if (during_initial_install()) {
2967 $this->page = $page;
2968 // Initialise the main navigation. It is most important that this is done
2969 // before we try anything
2970 $this->page->navigation->initialise();
2971 // Initialise the navigation cache
2972 $this->cache = new navigation_cache(NAVIGATION_CACHE_NAME);
2973 $this->children = new navigation_node_collection();
2976 * Initialise the settings navigation based on the current context
2978 * This function initialises the settings navigation tree for a given context
2979 * by calling supporting functions to generate major parts of the tree.
2982 public function initialise() {
2983 global $DB, $SESSION;
2985 if (during_initial_install()) {
2987 } else if ($this->initialised) {
2990 $this->id = 'settingsnav';
2991 $this->context = $this->page->context;
2993 $context = $this->context;
2994 if ($context->contextlevel == CONTEXT_BLOCK) {
2995 $this->load_block_settings();
2996 $context = $context->get_parent_context();
2999 switch ($context->contextlevel) {
3000 case CONTEXT_SYSTEM:
3001 if ($this->page->url->compare(new moodle_url('/admin/settings.php', array('section'=>'frontpagesettings')))) {
3002 $this->load_front_page_settings(($context->id == $this->context->id));
3005 case CONTEXT_COURSECAT:
3006 $this->load_category_settings();
3008 case CONTEXT_COURSE:
3009 if ($this->page->course->id != SITEID) {
3010 $this->load_course_settings(($context->id == $this->context->id));
3012 $this->load_front_page_settings(($context->id == $this->context->id));
3015 case CONTEXT_MODULE:
3016 $this->load_module_settings();
3017 $this->load_course_settings();
3020 if ($this->page->course->id != SITEID) {
3021 $this->load_course_settings();
3026 $settings = $this->load_user_settings($this->page->course->id);
3028 if (isloggedin() && !isguestuser() && (!property_exists($SESSION, 'load_navigation_admin') || $SESSION->load_navigation_admin)) {
3029 $admin = $this->load_administration_settings();
3030 $SESSION->load_navigation_admin = ($admin->has_children());
3035 if ($context->contextlevel == CONTEXT_SYSTEM && $admin) {
3036 $admin->force_open();
3037 } else if ($context->contextlevel == CONTEXT_USER && $settings) {
3038 $settings->force_open();
3041 // Check if the user is currently logged in as another user
3042 if (session_is_loggedinas()) {
3043 // Get the actual user, we need this so we can display an informative return link
3044 $realuser = session_get_realuser();
3045 // Add the informative return to original user link
3046 $url = new moodle_url('/course/loginas.php',array('id'=>$this->page->course->id, 'return'=>1,'sesskey'=>sesskey()));
3047 $this->add(get_string('returntooriginaluser', 'moodle', fullname($realuser, true)), $url, self::TYPE_SETTING, null, null, new pix_icon('t/left', ''));
3050 foreach ($this->children as $key=>$node) {
3051 if ($node->nodetype != self::NODETYPE_BRANCH || $node->children->count()===0) {
3055 $this->initialised = true;
3058 * Override the parent function so that we can add preceeding hr's and set a
3059 * root node class against all first level element
3061 * It does this by first calling the parent's add method {@link navigation_node::add()}
3062 * and then proceeds to use the key to set class and hr
3064 * @param string $text text to be used for the link.
3065 * @param string|moodle_url $url url for the new node
3066 * @param int $type the type of node navigation_node::TYPE_*
3067 * @param string $shorttext
3068 * @param string|int $key a key to access the node by.
3069 * @param pix_icon $icon An icon that appears next to the node.
3070 * @return navigation_node with the new node added to it.
3072 public function add($text, $url=null, $type=null, $shorttext=null, $key=null, pix_icon $icon=null) {
3073 $node = parent::add($text, $url, $type, $shorttext, $key, $icon);
3074 $node->add_class('root_node');
3079 * This function allows the user to add something to the start of the settings
3080 * navigation, which means it will be at the top of the settings navigation block
3082 * @param string $text text to be used for the link.
3083 * @param string|moodle_url $url url for the new node
3084 * @param int $type the type of node navigation_node::TYPE_*
3085 * @param string $shorttext
3086 * @param string|int $key a key to access the node by.
3087 * @param pix_icon $icon An icon that appears next to the node.
3088 * @return navigation_node $node with the new node added to it.
3090 public function prepend($text, $url=null, $type=null, $shorttext=null, $key=null, pix_icon $icon=null) {
3091 $children = $this->children;
3092 $childrenclass = get_class($children);
3093 $this->children = new $childrenclass;
3094 $node = $this->add($text, $url, $type, $shorttext, $key, $icon);
3095 foreach ($children as $child) {
3096 $this->children->add($child);
3101 * Load the site administration tree
3103 * This function loads the site administration tree by using the lib/adminlib library functions
3105 * @param navigation_node $referencebranch A reference to a branch in the settings
3107 * @param part_of_admin_tree $adminbranch The branch to add, if null generate the admin
3108 * tree and start at the beginning
3109 * @return mixed A key to access the admin tree by
3111 protected function load_administration_settings(navigation_node $referencebranch=null, part_of_admin_tree $adminbranch=null) {
3114 // Check if we are just starting to generate this navigation.
3115 if ($referencebranch === null) {
3117 // Require the admin lib then get an admin structure
3118 if (!function_exists('admin_get_root')) {
3119 require_once($CFG->dirroot.'/lib/adminlib.php');
3121 $adminroot = admin_get_root(false, false);
3122 // This is the active section identifier
3123 $this->adminsection = $this->page->url->param('section');
3125 // Disable the navigation from automatically finding the active node
3126 navigation_node::$autofindactive = false;
3127 $referencebranch = $this->add(get_string('administrationsite'), null, self::TYPE_SETTING, null, 'root');
3128 foreach ($adminroot->children as $adminbranch) {
3129 $this->load_administration_settings($referencebranch, $adminbranch);
3131 navigation_node::$autofindactive = true;
3133 // Use the admin structure to locate the active page
3134 if (!$this->contains_active_node() && $current = $adminroot->locate($this->adminsection, true)) {
3135 $currentnode = $this;
3136 while (($pathkey = array_pop($current->path))!==null && $currentnode) {
3137 $currentnode = $currentnode->get($pathkey);
3140 $currentnode->make_active();
3143 $this->scan_for_active_node($referencebranch);
3145 return $referencebranch;
3146 } else if ($adminbranch->check_access()) {
3147 // We have a reference branch that we can access and is not hidden `hurrah`
3148 // Now we need to display it and any children it may have
3151 if ($adminbranch instanceof admin_settingpage) {
3152 $url = new moodle_url('/'.$CFG->admin.'/settings.php', array('section'=>$adminbranch->name));
3153 } else if ($adminbranch instanceof admin_externalpage) {
3154 $url = $adminbranch->url;
3155 } else if (!empty($CFG->linkadmincategories) && $adminbranch instanceof admin_category) {
3156 $url = new moodle_url('/'.$CFG->admin.'/category.php', array('category' => $adminbranch->name));
3160 $reference = $referencebranch->add($adminbranch->visiblename, $url, self::TYPE_SETTING, null, $adminbranch->name, $icon);
3162 if ($adminbranch->is_hidden()) {
3163 if (($adminbranch instanceof admin_externalpage || $adminbranch instanceof admin_settingpage) && $adminbranch->name == $this->adminsection) {
3164 $reference->add_class('hidden');
3166 $reference->display = false;
3170 // Check if we are generating the admin notifications and whether notificiations exist
3171 if ($adminbranch->name === 'adminnotifications' && admin_critical_warnings_present()) {
3172 $reference->add_class('criticalnotification');
3174 // Check if this branch has children
3175 if ($reference && isset($adminbranch->children) && is_array($adminbranch->children) && count($adminbranch->children)>0) {
3176 foreach ($adminbranch->children as $branch) {
3177 // Generate the child branches as well now using this branch as the reference
3178 $this->load_administration_settings($reference, $branch);
3181 $reference->icon = new pix_icon('i/settings', '');
3187 * This function recursivily scans nodes until it finds the active node or there
3188 * are no more nodes.
3189 * @param navigation_node $node
3191 protected function scan_for_active_node(navigation_node $node) {
3192 if (!$node->check_if_active() && $node->children->count()>0) {
3193 foreach ($node->children as &$child) {
3194 $this->scan_for_active_node($child);
3200 * Gets a navigation node given an array of keys that represent the path to
3203 * @param array $path
3204 * @return navigation_node|false
3206 protected function get_by_path(array $path) {
3207 $node = $this->get(array_shift($path));
3208 foreach ($path as $key) {
3215 * Generate the list of modules for the given course.
3217 * @param stdClass $course The course to get modules for
3219 protected function get_course_modules($course) {
3221 $mods = $modnames = $modnamesplural = $modnamesused = array();
3222 // This function is included when we include course/lib.php at the top
3224 get_all_mods($course->id, $mods, $modnames, $modnamesplural, $modnamesused);
3225 $resources = array();
3226 $activities = array();
3227 foreach($modnames as $modname=>$modnamestr) {
3228 if (!course_allowed_module($course, $modname)) {
3232 $libfile = "$CFG->dirroot/mod/$modname/lib.php";
3233 if (!file_exists($libfile)) {
3236 include_once($libfile);
3237 $gettypesfunc = $modname.'_get_types';
3238 if (function_exists($gettypesfunc)) {
3239 $types = $gettypesfunc();
3240 foreach($types as $type) {
3241 if (!isset($type->modclass) || !isset($type->typestr)) {
3242 debugging('Incorrect activity type in '.$modname);
3245 if ($type->modclass == MOD_CLASS_RESOURCE) {
3246 $resources[html_entity_decode($type->type)] = $type->typestr;
3248 $activities[html_entity_decode($type->type)] = $type->typestr;
3252 $archetype = plugin_supports('mod', $modname, FEATURE_MOD_ARCHETYPE, MOD_ARCHETYPE_OTHER);
3253 if ($archetype == MOD_ARCHETYPE_RESOURCE) {
3254 $resources[$modname] = $modnamestr;
3256 // all other archetypes are considered activity
3257 $activities[$modname] = $modnamestr;
3261 return array($resources, $activities);
3265 * This function loads the course settings that are available for the user
3267 * @param bool $forceopen If set to true the course node will be forced open
3268 * @return navigation_node|false
3270 protected function load_course_settings($forceopen = false) {
3273 $course = $this->page->course;
3274 $coursecontext = get_context_instance(CONTEXT_COURSE, $course->id);
3276 // note: do not test if enrolled or viewing here because we need the enrol link in Course administration section
3278 $coursenode = $this->add(get_string('courseadministration'), null, self::TYPE_COURSE, null, 'courseadmin');
3280 $coursenode->force_open();
3283 if (has_capability('moodle/course:update', $coursecontext)) {
3284 // Add the turn on/off settings
3286 if ($this->page->url->compare(new moodle_url('/course/view.php'), URL_MATCH_BASE)) {
3287 // We are on the course page, retain the current page params e.g. section.
3288 $url = clone($this->page->url);
3289 $url->param('sesskey', sesskey());
3291 // Edit on the main course page.
3292 $url = new moodle_url('/course/view.php', array('id'=>$course->id, 'sesskey'=>sesskey()));
3294 if ($this->page->user_is_editing()) {
3295 $url->param('edit', 'off');
3296 $editstring = get_string('turneditingoff');
3298 $url->param('edit', 'on');
3299 $editstring = get_string('turneditingon');
3301 $coursenode->add($editstring, $url, self::TYPE_SETTING, null, null, new pix_icon('i/edit', ''));
3303 if ($this->page->user_is_editing()) {
3304 // Removed as per MDL-22732
3305 // $this->add_course_editing_links($course);
3308 // Add the course settings link
3309 $url = new moodle_url('/course/edit.php', array('id'=>$course->id));
3310 $coursenode->add(get_string('editsettings'), $url, self::TYPE_SETTING, null, null, new pix_icon('i/settings', ''));
3312 // Add the course completion settings link
3313 if ($CFG->enablecompletion && $course->enablecompletion) {
3314 $url = new moodle_url('/course/completion.php', array('id'=>$course->id));
3315 $coursenode->add(get_string('completion', 'completion'), $url, self::TYPE_SETTING, null, null, new pix_icon('i/settings', ''));
3320 enrol_add_course_navigation($coursenode, $course);
3323 if (has_capability('moodle/filter:manage', $coursecontext) && count(filter_get_available_in_context($coursecontext))>0) {
3324 $url = new moodle_url('/filter/manage.php', array('contextid'=>$coursecontext->id));
3325 $coursenode->add(get_string('filters', 'admin'), $url, self::TYPE_SETTING, null, null, new pix_icon('i/filter', ''));
3328 // Add view grade report is permitted
3329 $reportavailable = false;
3330 if (has_capability('moodle/grade:viewall', $coursecontext)) {
3331 $reportavailable = true;
3332 } else if (!empty($course->showgrades)) {
3333 $reports = get_plugin_list('gradereport');
3334 if (is_array($reports) && count($reports)>0) { // Get all installed reports
3335 arsort($reports); // user is last, we want to test it first
3336 foreach ($reports as $plugin => $plugindir) {
3337 if (has_capability('gradereport/'.$plugin.':view', $coursecontext)) {
3338 //stop when the first visible plugin is found
3339 $reportavailable = true;
3345 if ($reportavailable) {
3346 $url = new moodle_url('/grade/report/index.php', array('id'=>$course->id));
3347 $gradenode = $coursenode->add(get_string('grades'), $url, self::TYPE_SETTING, null, 'grades', new pix_icon('i/grades', ''));
3350 // Add outcome if permitted
3351 if (!empty($CFG->enableoutcomes) && has_capability('moodle/course:update', $coursecontext)) {
3352 $url = new moodle_url('/grade/edit/outcome/course.php', array('id'=>$course->id));
3353 $coursenode->add(get_string('outcomes', 'grades'), $url, self::TYPE_SETTING, null, 'outcomes', new pix_icon('i/outcomes', ''));
3356 // Backup this course
3357 if (has_capability('moodle/backup:backupcourse', $coursecontext)) {
3358 $url = new moodle_url('/backup/backup.php', array('id'=>$course->id));
3359 $coursenode->add(get_string('backup'), $url, self::TYPE_SETTING, null, 'backup', new pix_icon('i/backup', ''));
3362 // Restore to this course
3363 if (has_capability('moodle/restore:restorecourse', $coursecontext)) {
3364 $url = new moodle_url('/backup/restorefile.php', array('contextid'=>$coursecontext->id));
3365 $coursenode->add(get_string('restore'), $url, self::TYPE_SETTING, null, 'restore', new pix_icon('i/restore', ''));
3368 // Import data from other courses
3369 if (has_capability('moodle/restore:restoretargetimport', $coursecontext)) {
3370 $url = new moodle_url('/backup/import.php', array('id'=>$course->id));
3371 $coursenode->add(get_string('import'), $url, self::TYPE_SETTING, null, 'import', new pix_icon('i/restore', ''));
3374 // Publish course on a hub
3375 if (has_capability('moodle/course:publish', $coursecontext)) {
3376 $url = new moodle_url('/course/publish/index.php', array('id'=>$course->id));
3377 $coursenode->add(get_string('publish'), $url, self::TYPE_SETTING, null, 'publish', new pix_icon('i/publish', ''));
3380 // Reset this course
3381 if (has_capability('moodle/course:reset', $coursecontext)) {
3382 $url = new moodle_url('/course/reset.php', array('id'=>$course->id));
3383 $coursenode->add(get_string('reset'), $url, self::TYPE_SETTING, null, null, new pix_icon('i/return', ''));
3387 require_once($CFG->libdir . '/questionlib.php');
3388 question_extend_settings_navigation($coursenode, $coursecontext)->trim_if_empty();
3390 if (has_capability('moodle/course:update', $coursecontext)) {
3391 // Repository Instances
3392 if (!$this->cache->cached('contexthasrepos'.$coursecontext->id)) {
3393 require_once($CFG->dirroot . '/repository/lib.php');
3394 $editabletypes = repository::get_editable_types($coursecontext);
3395 $haseditabletypes = !empty($editabletypes);
3396 unset($editabletypes);
3397 $this->cache->set('contexthasrepos'.$coursecontext->id, $haseditabletypes);
3399 $haseditabletypes = $this->cache->{'contexthasrepos'.$coursecontext->id};
3401 if ($haseditabletypes) {
3402 $url = new moodle_url('/repository/manage_instances.php', array('contextid' => $coursecontext->id));
3403 $coursenode->add(get_string('repositories'), $url, self::TYPE_SETTING, null, null, new pix_icon('i/repository', ''));
3408 if ($course->legacyfiles == 2 and has_capability('moodle/course:managefiles', $coursecontext)) {
3409 // hidden in new courses and courses where legacy files were turned off
3410 $url = new moodle_url('/files/index.php', array('contextid'=>$coursecontext->id));
3411 $coursenode->add(get_string('courselegacyfiles'), $url, self::TYPE_SETTING, null, 'coursefiles', new pix_icon('i/files', ''));
3417 $assumedrole = $this->in_alternative_role();
3418 if ($assumedrole !== false) {
3419 $roles[0] = get_string('switchrolereturn');
3421 if (has_capability('moodle/role:switchroles', $coursecontext)) {
3422 $availableroles = get_switchable_roles($coursecontext);
3423 if (is_array($availableroles)) {
3424 foreach ($availableroles as $key=>$role) {
3425 if ($assumedrole == (int)$key) {
3428 $roles[$key] = $role;
3432 if (is_array($roles) && count($roles)>0) {
3433 $switchroles = $this->add(get_string('switchroleto'));
3434 if ((count($roles)==1 && array_key_exists(0, $roles))|| $assumedrole!==false) {
3435 $switchroles->force_open();
3437 $returnurl = $this->page->url;
3438 $returnurl->param('sesskey', sesskey());
3439 foreach ($roles as $key => $name) {
3440 $url = new moodle_url('/course/switchrole.php', array('id'=>$course->id,'sesskey'=>sesskey(), 'switchrole'=>$key, 'returnurl'=>$returnurl->out(false)));
3441 $switchroles->add($name, $url, self::TYPE_SETTING, null, $key, new pix_icon('i/roles', ''));
3444 // Return we are done
3449 * Adds branches and links to the settings navigation to add course activities
3452 * @param stdClass $course
3454 protected function add_course_editing_links($course) {
3457 require_once($CFG->dirroot.'/course/lib.php');
3459 // Add `add` resources|activities branches
3460 $structurefile = $CFG->dirroot.'/course/format/'.$course->format.'/lib.php';
3461 if (file_exists($structurefile)) {
3462 require_once($structurefile);
3463 $requestkey = call_user_func('callback_'.$course->format.'_request_key');
3464 $formatidentifier = optional_param($requestkey, 0, PARAM_INT);
3466 $requestkey = get_string('section');
3467 $formatidentifier = optional_param($requestkey, 0, PARAM_INT);
3470 $sections = get_all_sections($course->id);
3472 $addresource = $this->add(get_string('addresource'));
3473 $addactivity = $this->add(get_string('addactivity'));
3474 if ($formatidentifier!==0) {
3475 $addresource->force_open();
3476 $addactivity->force_open();
3479 $this->get_course_modules($course);
3481 foreach ($sections as $section) {
3482 if ($formatidentifier !== 0 && $section->section != $formatidentifier) {
3485 $sectionurl = new moodle_url('/course/view.php', array('id'=>$course->id, $requestkey=>$section->section));
3486 if ($section->section == 0) {
3487 $sectionresources = $addresource->add(get_string('course'), $sectionurl, self::TYPE_SETTING);
3488 $sectionactivities = $addactivity->add(get_string('course'), $sectionurl, self::TYPE_SETTING);
3490 $sectionname = get_section_name($course, $section);
3491 $sectionresources = $addresource->add($sectionname, $sectionurl, self::TYPE_SETTING);
3492 $sectionactivities = $addactivity->add($sectionname, $sectionurl, self::TYPE_SETTING);
3494 foreach ($resources as $value=>$resource) {
3495 $url = new moodle_url('/course/mod.php', array('id'=>$course->id, 'sesskey'=>sesskey(), 'section'=>$section->section));
3496 $pos = strpos($value, '&type=');
3498 $url->param('add', textlib::substr($value, 0,$pos));
3499 $url->param('type', textlib::substr($value, $pos+6));
3501 $url->param('add', $value);
3503 $sectionresources->add($resource, $url, self::TYPE_SETTING);
3506 foreach ($activities as $activityname=>$activity) {
3507 if ($activity==='--') {
3511 if (strpos($activity, '--')===0) {
3512 $subbranch = $sectionactivities->add(trim($activity, '-'));
3515 $url = new moodle_url('/course/mod.php', array('id'=>$course->id, 'sesskey'=>sesskey(), 'section'=>$section->section));
3516 $pos = strpos($activityname, '&type=');
3518 $url->param('add', textlib::substr($activityname, 0,$pos));
3519 $url->param('type', textlib::substr($activityname, $pos+6));
3521 $url->param('add', $activityname);
3523 if ($subbranch !== false) {
3524 $subbranch->add($activity, $url, self::TYPE_SETTING);
3526 $sectionactivities->add($activity, $url, self::TYPE_SETTING);
3533 * This function calls the module function to inject module settings into the
3534 * settings navigation tree.
3536 * This only gets called if there is a corrosponding function in the modules
3539 * For examples mod/forum/lib.php {@link forum_extend_settings_navigation()}
3541 * @return navigation_node|false
3543 protected function load_module_settings() {
3546 if (!$this->page->cm && $this->context->contextlevel == CONTEXT_MODULE && $this->context->instanceid) {
3547 $cm = get_coursemodule_from_id(false, $this->context->instanceid, 0, false, MUST_EXIST);
3548 $this->page->set_cm($cm, $this->page->course);
3551 $file = $CFG->dirroot.'/mod/'.$this->page->activityname.'/lib.php';
3552 if (file_exists($file)) {
3553 require_once($file);
3556 $modulenode = $this->add(get_string('pluginadministration', $this->page->activityname));
3557 $modulenode->force_open();
3559 // Settings for the module
3560 if (has_capability('moodle/course:manageactivities', $this->page->cm->context)) {
3561 $url = new moodle_url('/course/modedit.php', array('update' => $this->page->cm->id, 'return' => true, 'sesskey' => sesskey()));
3562 $modulenode->add(get_string('editsettings'), $url, navigation_node::TYPE_SETTING, null, 'modedit');
3564 // Assign local roles
3565 if (count(get_assignable_roles($this->page->cm->context))>0) {
3566 $url = new moodle_url('/'.$CFG->admin.'/roles/assign.php', array('contextid'=>$this->page->cm->context->id));
3567 $modulenode->add(get_string('localroles', 'role'), $url, self::TYPE_SETTING, null, 'roleassign');
3570 if (has_capability('moodle/role:review', $this->page->cm->context) or count(get_overridable_roles($this->page->cm->context))>0) {
3571 $url = new moodle_url('/'.$CFG->admin.'/roles/permissions.php', array('contextid'=>$this->page->cm->context->id));
3572 $modulenode->add(get_string('permissions', 'role'), $url, self::TYPE_SETTING, null, 'roleoverride');
3574 // Check role permissions
3575 if (has_any_capability(array('moodle/role:assign', 'moodle/role:safeoverride','moodle/role:override', 'moodle/role:assign'), $this->page->cm->context)) {
3576 $url = new moodle_url('/'.$CFG->admin.'/roles/check.php', array('contextid'=>$this->page->cm->context->id));
3577 $modulenode->add(get_string('checkpermissions', 'role'), $url, self::TYPE_SETTING, null, 'rolecheck');
3580 if (has_capability('moodle/filter:manage', $this->page->cm->context) && count(filter_get_available_in_context($this->page->cm->context))>0) {
3581 $url = new moodle_url('/filter/manage.php', array('contextid'=>$this->page->cm->context->id));
3582 $modulenode->add(get_string('filters', 'admin'), $url, self::TYPE_SETTING, null, 'filtermanage');
3585 $reports = get_plugin_list_with_function('report', 'extend_navigation_module', 'lib.php');
3586 foreach ($reports as $reportfunction) {
3587 $reportfunction($modulenode, $this->page->cm);
3589 // Add a backup link
3590 $featuresfunc = $this->page->activityname.'_supports';
3591 if (function_exists($featuresfunc) && $featuresfunc(FEATURE_BACKUP_MOODLE2) && has_capability('moodle/backup:backupactivity', $this->page->cm->context)) {
3592 $url = new moodle_url('/backup/backup.php', array('id'=>$this->page->cm->course, 'cm'=>$this->page->cm->id));
3593 $modulenode->add(get_string('backup'), $url, self::TYPE_SETTING, null, 'backup');
3596 // Restore this activity
3597 $featuresfunc = $this->page->activityname.'_supports';
3598 if (function_exists($featuresfunc) && $featuresfunc(FEATURE_BACKUP_MOODLE2) && has_capability('moodle/restore:restoreactivity', $this->page->cm->context)) {
3599 $url = new moodle_url('/backup/restorefile.php', array('contextid'=>$this->page->cm->context->id));
3600 $modulenode->add(get_string('restore'), $url, self::TYPE_SETTING, null, 'restore');
3603 // Allow the active advanced grading method plugin to append its settings
3604 $featuresfunc = $this->page->activityname.'_supports';
3605 if (function_exists($featuresfunc) && $featuresfunc(FEATURE_ADVANCED_GRADING) && has_capability('moodle/grade:managegradingforms', $this->page->cm->context)) {
3606 require_once($CFG->dirroot.'/grade/grading/lib.php');
3607 $gradingman = get_grading_manager($this->page->cm->context, $this->page->activityname);
3608 $gradingman->extend_settings_navigation($this, $modulenode);
3611 $function = $this->page->activityname.'_extend_settings_navigation';
3612 if (!function_exists($function)) {
3616 $function($this, $modulenode);
3618 // Remove the module node if there are no children
3619 if (empty($modulenode->children)) {
3620 $modulenode->remove();
3627 * Loads the user settings block of the settings nav
3629 * This function is simply works out the userid and whether we need to load
3630 * just the current users profile settings, or the current user and the user the
3631 * current user is viewing.
3633 * This function has some very ugly code to work out the user, if anyone has
3634 * any bright ideas please feel free to intervene.
3636 * @param int $courseid The course id of the current course
3637 * @return navigation_node|false
3639 protected function load_user_settings($courseid=SITEID) {
3642 if (isguestuser() || !isloggedin()) {
3646 $navusers = $this->page->navigation->get_extending_users();
3648 if (count($this->userstoextendfor) > 0 || count($navusers) > 0) {
3650 foreach ($this->userstoextendfor as $userid) {
3651 if ($userid == $USER->id) {
3654 $node = $this->generate_user_settings($courseid, $userid, 'userviewingsettings');
3655 if (is_null($usernode)) {
3659 foreach ($navusers as $user) {
3660 if ($user->id == $USER->id) {
3663 $node = $this->generate_user_settings($courseid, $user->id, 'userviewingsettings');
3664 if (is_null($usernode)) {
3668 $this->generate_user_settings($courseid, $USER->id);
3670 $usernode = $this->generate_user_settings($courseid, $USER->id);
3676 * Extends the settings navigation for the given user.
3678 * Note: This method gets called automatically if you call
3679 * $PAGE->navigation->extend_for_user($userid)
3681 * @param int $userid
3683 public function extend_for_user($userid) {
3686 if (!in_array($userid, $this->userstoextendfor)) {
3687 $this->userstoextendfor[] = $userid;
3688 if ($this->initialised) {
3689 $this->generate_user_settings($this->page->course->id, $userid, 'userviewingsettings');
3690 $children = array();
3691 foreach ($this->children as $child) {
3692 $children[] = $child;
3694 array_unshift($children, array_pop($children));
3695 $this->children = new navigation_node_collection();
3696 foreach ($children as $child) {
3697 $this->children->add($child);
3704 * This function gets called by {@link settings_navigation::load_user_settings()} and actually works out
3705 * what can be shown/done
3707 * @param int $courseid The current course' id
3708 * @param int $userid The user id to load for
3709 * @param string $gstitle The string to pass to get_string for the branch title
3710 * @return navigation_node|false
3712 protected function generate_user_settings($courseid, $userid, $gstitle='usercurrentsettings') {
3713 global $DB, $CFG, $USER, $SITE;
3715 if ($courseid != SITEID) {
3716 if (!empty($this->page->course->id) && $this->page->course->id == $courseid) {
3717 $course = $this->page->course;
3719 $select = context_helper::get_preload_record_columns_sql('ctx');
3720 $sql = "SELECT c.*, $select
3722 JOIN {context} ctx ON c.id = ctx.instanceid
3723 WHERE c.id = :courseid AND ctx.contextlevel = :contextlevel";
3724 $params = array('courseid' => $courseid, 'contextlevel' => CONTEXT_COURSE);
3725 $course = $DB->get_record_sql($sql, $params, MUST_EXIST);
3726 context_helper::preload_from_record($course);
3732 $coursecontext = get_context_instance(CONTEXT_COURSE, $course->id); // Course context
3733 $systemcontext = get_system_context();
3734 $currentuser = ($USER->id == $userid);
3738 $usercontext = get_context_instance(CONTEXT_USER, $user->id); // User context
3740 $select = context_helper::get_preload_record_columns_sql('ctx');
3741 $sql = "SELECT u.*, $select
3743 JOIN {context} ctx ON u.id = ctx.instanceid
3744 WHERE u.id = :userid AND ctx.contextlevel = :contextlevel";
3745 $params = array('userid' => $userid, 'contextlevel' => CONTEXT_USER);
3746 $user = $DB->get_record_sql($sql, $params, IGNORE_MISSING);
3750 context_helper::preload_from_record($user);
3752 // Check that the user can view the profile
3753 $usercontext = get_context_instance(CONTEXT_USER, $user->id); // User context
3754 $canviewuser = has_capability('moodle/user:viewdetails', $usercontext);
3756 if ($course->id == SITEID) {
3757 if ($CFG->forceloginforprofiles && !has_coursecontact_role($user->id) && !$canviewuser) { // Reduce possibility of "browsing" userbase at site level
3758 // Teachers can browse and be browsed at site level. If not forceloginforprofiles, allow access (bug #4366)
3762 $canviewusercourse = has_capability('moodle/user:viewdetails', $coursecontext);
3763 $canaccessallgroups = has_capability('moodle/site:accessallgroups', $coursecontext);
3764 if ((!$canviewusercourse && !$canviewuser) || !can_access_course($course, $user->id)) {
3767 if (!$canaccessallgroups && groups_get_course_groupmode($course) == SEPARATEGROUPS) {
3768 // If groups are in use, make sure we can see that group
3774 $fullname = fullname($user, has_capability('moodle/site:viewfullnames', $this->page->context));
3777 if ($gstitle != 'usercurrentsettings') {
3781 // Add a user setting branch
3782 $usersetting = $this->add(get_string($gstitle, 'moodle', $fullname), null, self::TYPE_CONTAINER, null, $key);
3783 $usersetting->id = 'usersettings';
3784 if ($this->page->context->contextlevel == CONTEXT_USER && $this->page->context->instanceid == $user->id) {
3785 // Automatically start by making it active
3786 $usersetting->make_active();
3789 // Check if the user has been deleted
3790 if ($user->deleted) {
3791 if (!has_capability('moodle/user:update', $coursecontext)) {
3792 // We can't edit the user so just show the user deleted message
3793 $usersetting->add(get_string('userdeleted'), null, self::TYPE_SETTING);
3795 // We can edit the user so show the user deleted message and link it to the profile
3796 if ($course->id == SITEID) {
3797 $profileurl = new moodle_url('/user/profile.php', array('id'=>$user->id));
3799 $profileurl = new moodle_url('/user/view.php', array('id'=>$user->id, 'course'=>$course->id));
3801 $usersetting->add(get_string('userdeleted'), $profileurl, self::TYPE_SETTING);
3806 $userauthplugin = false;
3807 if (!empty($user->auth)) {