This class is used to represent a node in a navigation tree. More...

Inheritance diagram for navigation_node:

Public Member Functions
	__construct ($properties)
	Constructs a new navigation_node.

	__wakeup ()
	Resets the page specific information on this node if it is being unserialised.

	action ()
	Get the action url for this navigation node.

	action_link_actions ()
	Return an array consisting of the actions for the action link.

	actionattributes ()
	Return an array consisting of the additional attributes for the action url.

	add ($text, $action=null, $type=self::TYPE_CUSTOM, $shorttext=null, $key=null, pix_icon $icon=null)
	Adds a navigation node as a child of this node.

	add_class ($class)
	Adds a CSS class to this node.

	add_node (navigation_node $childnode, $beforekey=null)
	Adds a navigation node as a child of this one, given a $node object created using the create function.

	build_flat_navigation_list (flat_navigation $nodes, $showdivider=false, $label='')
	Walk the tree building up a list of all the flat navigation nodes.

	check_if_active ($strength=URL_MATCH_EXACT)
	Checks if this node is the active node.

	contains_active_node ()
	Checks if this node or any of its children contain the active node.

	find ($key, $type)
	Searches for a node of the given type with the given key.

	find_active_node ()
	Finds the active node.

	find_all_of_type ($type)
	Finds all nodes of a given type (recursive)

	find_expandable (array &$expandable)
	Finds all nodes that are expandable by AJAX.

	force_open ()
	Forces this node to be open and at the same time forces open all parents until the root node.

	get ($key, $type=null)
	Get the child of this node that has the given key + (optional) type.

	get_children_key_list ()
	Return a list of all the keys of all the child nodes.

	get_content ($shorttext=false)
	Gets the content for this node.

	get_css_type ()
	Gets the CSS class to add to this node to describe its type.

	get_siblings ()
	Get a list of sibling navigation nodes at the same level as this one.

	get_tabs_array (array $inactive=array(), $return=false)
	Creates a tab representation of this nodes children that can be used with print_tabs to produce the tabs on a page.

	get_title ()
	Gets the title to use for this node.

	has_action ()
	Used to easily determine if this link in the breadcrumbs has a valid action/url.

	has_children ()
	Checks if this node has or could have any children.

	has_internal_action ()
	Used to easily determine if the action is an internal link.

	has_siblings ()
	True if this nav node has siblings in the tree.

	hide (array $typestohide=null)
	Hides the node and any children it has.

	is_action_link ()
	Check whether the node's action is of type action_link.

	is_hidden ()
	Used to easily determine if this link in the breadcrumbs is hidden.

	is_short_branch ()
	To better balance the admin tree, we want to group all the short top branches together.

	make_active ()
	Marks this node as active and forces it open.

	make_inactive ()
	Marks a node as inactive and recusised back to the base of the tree doing the same to all parents.

	remove ()
	Removes this node.

	remove_class ($class)
	Removes a CSS class from this node.

	search_for_active_node ($strength=URL_MATCH_BASE)
	Searches all children for the best matching active node.

	set_force_into_more_menu (bool $forceintomoremenu=false)
	Sets whether the node and its children should be added into a "more" menu whenever possible.

	set_parent (navigation_node $parent)
	Sets the parent for this node and if this node is active ensures that the tree is properly adjusted as well.

	set_show_in_secondary_navigation (bool $show=true)
	Sets whether the node and its children should be displayed in the "secondary" navigation when applicable.

	title (?string $title=null)
	Sets the title for this node and forces Moodle to utilise it.

	trim_if_empty ()
	Removes this node if it is empty.

Static Public Member Functions
static	create ($text, $action=null, $type=self::TYPE_CUSTOM, $shorttext=null, $key=null, pix_icon $icon=null)
	Creates a navigation node, ready to add it as a child using add_node function.

static	override_active_url (moodle_url $url, $loadadmintree=false)
	This sets the URL that the URL of new nodes get compared to when locating the active node.

static	require_admin_tree ()
	Use when page is linked from the admin tree, if not used navigation could not find the page using current URL because the tree is not fully loaded.

Public Attributes
moodle_url action_link null	$action = null
	An action for the node (link)

navigation_node_collection	$children = array()
	An array of child nodes.

array	$classes = array()
	An array of CSS classes for the node.

bool	$collapse = false
	If set to true the node will be collapsed by default.

bool	$display = true
	If set to false the node will not be displayed.

bool	$forceintomoremenu = false
	If set to true this node will be forced into a "more" menu whenever possible.

bool	$forceopen = false
	If set to true the node will be expanded by default.

bool	$forcetitle = false
	If set to true a title will be added to the action no matter what.

bool	$haschildren
	node that have children.

string	$helpbutton = null
	A string that can be used to build a help button.

bool	$hidden = false
	If set to true the node will be dimmed.

bool	$hideicon = false
	Override to not display the icon even if one is provided.

pix_icon	$icon = null
	The path to an icon to use for this node.

int	$id = null
	Parameter to aid the coder in tracking [optional].

mixed	$includesectionnum = false
	If set to an int, that section will be included even if it has no activities.

bool	$isactive = false
	If set to true the node will be recognised as active.

bool	$isexpandable = false
	Set to true if we KNOW that this node can be expanded.

string int	$key = null
	The identifier for the node, used to retrieve the node.

bool	$mainnavonly = false
	If set to true the the navigation bar should ignore this node.

string	$moremenuid
	unique identifier.

int	$nodetype = self::NODETYPE_LEAF
	See NODETYPE_* constants defined for this class.

navigation_node	$parent = null
	A reference to the node parent, you should never set this directly you should always call set_parent.

bool	$preceedwithhr = false
	If set to true then an HR will be printed before the node.

bool	$requiresajaxloading = false
	does the node need to be loaded via ajax

string	$shorttext = null
	Short text to use if requested [optional].

bool	$showchildreninsubmenu = false
	If set to true the children of this node will be displayed within a submenu when applicable.

bool	$showinflatnavigation = false
	If set to true this node will be added to the "flat" navigation.

bool	$showinsecondarynavigation = true
	If set to true this node will be displayed in the "secondary" navigation when applicable.

string	$tab
	tab element ID.

string lang_string	$text = null
	The text to use for the node.

string	$title = null
	The title attribute for an action if one is defined.

int	$type = self::TYPE_UNKNOWN
	See TYPE_* constants defined for this class.

const	COURSE_CURRENT = 2
	var int Course the current user is currently viewing

const	COURSE_INDEX_PAGE = 'courseindexpage'
	var string The course index page navigation node

const	COURSE_MY = 1
	var int Course the current user is enrolled in but not viewing

const	COURSE_OTHER = 0
	var int Course the current user is not enrolled in

int const	NODETYPE_BRANCH = 1
	Used to identify this node a branch, happens with children 1.

int const	NODETYPE_LEAF = 0
	Used to identify this node a leaf (default) 0.

int const	TYPE_ACTIVITY = 40
	Activity node type, e.g.

int const	TYPE_CATEGORY = 10
	Category node type 10.

int const	TYPE_CONTAINER = 90
	Setting node type, used for containers of no importance 90.

int const	TYPE_COURSE = 20
	Course node type 20.

int const	TYPE_CUSTOM = 60
	A custom node type, default when adding without specifing type 60.

const	TYPE_MY_CATEGORY = 11
	var int Category displayed in MyHome navigation node

int const	TYPE_RESOURCE = 50
	Resource node type, e.g.

int const	TYPE_ROOTNODE = 0
	System node type 0.

int const	TYPE_SECTION = 30
	Course Structure node type 30.

int const	TYPE_SETTING = 70
	Setting node type, used only within settings nav 70.

int const	TYPE_SITE_ADMIN = 71
	site admin branch node type, used only within settings nav 71

int const	TYPE_SYSTEM = 1
	System node type 1.

null const	TYPE_UNKNOWN = null
	Unknown node type null.

int const	TYPE_USER = 80
	Setting node type, used only within settings nav 80.

Static Public Attributes
static bool	$autofindactive = true
	toogles auto matching of active node

Protected Member Functions
	add_context_locking_node (\navigation_node $node, context $context)
	Add the menu item to handle locking and unlocking of a conext.

Protected Attributes
array	$namedtypes

Static Protected Attributes
static moodle_url	$fullmeurl = null

static bool	$loadadmintree = false
	should we load full admin tree or rely on AJAX for performance reasons

Detailed Description

This class is used to represent a node in a navigation tree.

This class is used to represent a node in a navigation tree within Moodle, the tree could be one of global navigation, settings navigation, or the navbar. Each node can be one of two types either a Leaf (default) or a branch. When a node is first created it is created as a leaf, when/if children are added the node then becomes a branch.

Copyright: 2009 Sam Hemelryk

License: http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

Constructor & Destructor Documentation

◆ __construct()

navigation_node::__construct ( $properties )

Constructs a new navigation_node.

Parameters

array | string $properties Either an array of properties or a string to use as the text for the node

Reimplemented in breadcrumb_navigation_node.

Member Function Documentation

◆ action()

navigation_node::action ( )

Get the action url for this navigation node.

Called from templates.

Since: Moodle 3.2

◆ action_link_actions()

navigation_node::action_link_actions ( )

Return an array consisting of the actions for the action link.

Return values

array Formatted array to parse in a template

◆ actionattributes()

navigation_node::actionattributes ( )

Return an array consisting of the additional attributes for the action url.

Return values

array Formatted array to parse in a template

◆ add()

navigation_node::add	(		$text,
			$action = null,
			$type = self::TYPE_CUSTOM,
			$shorttext = null,
			$key = null,
		pix_icon	$icon = null )

Adds a navigation node as a child of this node.

Parameters

string	$text
moodle_url \| action_link \| string	$action
int	$type
string	$shorttext
string \| int	$key
pix_icon	$icon

Return values

navigation_node

Reimplemented in navbar, and settings_navigation.

◆ add_class()

navigation_node::add_class ( $class )

Adds a CSS class to this node.

Parameters

string $class

Return values

bool

◆ add_context_locking_node()

navigation_node::add_context_locking_node	(	\navigation_node	$node,
		context	$context )

protected

Add the menu item to handle locking and unlocking of a conext.

Parameters

navigation_node	$node	Node to add
context	$context	The context to be locked

◆ add_node()

navigation_node::add_node	(	navigation_node	$childnode,
			$beforekey = null )

Adds a navigation node as a child of this one, given a $node object created using the create function.

Parameters

navigation_node	$childnode	Node to add
string	$beforekey

Return values

navigation_node The added node

◆ build_flat_navigation_list()

navigation_node::build_flat_navigation_list	(	flat_navigation	$nodes,
			$showdivider = false,
			$label = '' )

Walk the tree building up a list of all the flat navigation nodes.

Deprecated: since Moodle 4.0

Parameters

flat_navigation	$nodes	List of the found flat navigation nodes.
boolean	$showdivider	Show a divider before the first node.
string	$label	A label for the collection of navigation links.

◆ check_if_active()

navigation_node::check_if_active ( $strength = URL_MATCH_EXACT )

Checks if this node is the active node.

This is determined by comparing the action for the node against the defined URL for the page. A match will see this node marked as active.

Parameters

int $strength One of URL_MATCH_EXACT, URL_MATCH_PARAMS, or URL_MATCH_BASE

Return values

bool

◆ contains_active_node()

navigation_node::contains_active_node ( )

Checks if this node or any of its children contain the active node.

Recursive.

Return values

bool

◆ create()

static navigation_node::create	(		$text,
			$action = null,
			$type = self::TYPE_CUSTOM,
			$shorttext = null,
			$key = null,
		pix_icon	$icon = null )

static

Creates a navigation node, ready to add it as a child using add_node function.

(The created node needs to be added before you can use it.)

Parameters

string	$text
moodle_url \| action_link	$action
int	$type
string	$shorttext
string \| int	$key
pix_icon	$icon

Return values

navigation_node

◆ find()

navigation_node::find	(		$key,
			$type )

Searches for a node of the given type with the given key.

This searches this node plus all of its children, and their children.... If you know the node you are looking for is a child of this node then please use the get method instead.

Parameters

int \| string	$key	The key of the node we are looking for
int	$type	One of navigation_node\TYPE_*

Return values

navigation_node|false

Reimplemented in global_navigation.

◆ find_active_node()

navigation_node::find_active_node ( )

Finds the active node.

Searches this nodes children plus all of the children for the active node and returns it if found.

Recursive.

Return values

navigation_node|false

◆ find_all_of_type()

navigation_node::find_all_of_type ( $type )

Finds all nodes of a given type (recursive)

Parameters

int $type One of navigation_node\TYPE_*

Return values

array

◆ find_expandable()

navigation_node::find_expandable ( array & $expandable )

Finds all nodes that are expandable by AJAX.

Parameters

array $expandable An array by reference to populate with expandable nodes.

◆ force_open()

navigation_node::force_open ( )

Forces this node to be open and at the same time forces open all parents until the root node.

Recursive.

◆ get()

navigation_node::get	(		$key,
			$type = null )

Get the child of this node that has the given key + (optional) type.

If you are looking for a node and want to search all children + their children then please use the find method instead.

Parameters

int \| string	$key	The key of the node we are looking for
int	$type	One of navigation_node\TYPE_*

Return values

navigation_node|false

Reimplemented in global_navigation, and navbar.

◆ get_children_key_list()

navigation_node::get_children_key_list ( )

Return a list of all the keys of all the child nodes.

Return values

array the keys.

◆ get_content()

navigation_node::get_content ( $shorttext = false )

Gets the content for this node.

Parameters

bool $shorttext If true shorttext is used rather than the normal text

Return values

string

◆ get_css_type()

navigation_node::get_css_type ( )

Gets the CSS class to add to this node to describe its type.

Return values

string

◆ get_siblings()

navigation_node::get_siblings ( )

Get a list of sibling navigation nodes at the same level as this one.

Return values

bool|array of navigation_node

◆ get_tabs_array()

navigation_node::get_tabs_array	(	array	$inactive = array(),
			$return = false )

Creates a tab representation of this nodes children that can be used with print_tabs to produce the tabs on a page.

call_user_func_array('print_tabs', $node->get_tabs_array());

Parameters

array	$inactive
bool	$return

Return values

array Array (tabs, selected, inactive, activated, return)

◆ get_title()

navigation_node::get_title ( )

Gets the title to use for this node.

Return values

string

◆ has_action()

navigation_node::has_action ( )

Used to easily determine if this link in the breadcrumbs has a valid action/url.

Return values

boolean

◆ has_children()

navigation_node::has_children ( )

Checks if this node has or could have any children.

Return values

bool	Returns true if it has children or could have (by AJAX expansion)

◆ has_internal_action()

navigation_node::has_internal_action ( )

Used to easily determine if the action is an internal link.

Return values

bool

◆ has_siblings()

navigation_node::has_siblings ( )

True if this nav node has siblings in the tree.

Return values

bool

◆ hide()

navigation_node::hide ( array $typestohide = null )

Hides the node and any children it has.

Since: Moodle 2.5

Parameters

array $typestohide Optional. An array of node types that should be hidden. If null all nodes will be hidden. If an array is given then nodes will only be hidden if their type mtatches an element in the array. e.g. array(navigation_node\TYPE_COURSE) would hide only course nodes.

◆ is_action_link()

navigation_node::is_action_link ( )

Check whether the node's action is of type action_link.

Return values

bool

◆ is_hidden()

navigation_node::is_hidden ( )

Used to easily determine if this link in the breadcrumbs is hidden.

Return values

boolean

◆ is_short_branch()

navigation_node::is_short_branch ( )

To better balance the admin tree, we want to group all the short top branches together.

This means < 8 nodes and no subtrees.

Return values

bool

◆ make_active()

navigation_node::make_active ( )

Marks this node as active and forces it open.

Important: If you are here because you need to mark a node active to get the navigation to do what you want have you looked at navigation_node::override_active_url()? You can use it to specify a different URL to match the active navigation node on rather than having to locate and manually mark a node active.

◆ override_active_url()

static navigation_node::override_active_url	(	moodle_url	$url,
			$loadadmintree = false )

static

This sets the URL that the URL of new nodes get compared to when locating the active node.

The active node is the node that matches the URL set here. By default this is either $PAGE->url or if that hasn't been set $FULLME.

Parameters

moodle_url	$url	The url to use for the fullmeurl.
bool	$loadadmintree	use true if the URL point to administration tree

◆ remove()

navigation_node::remove ( )

Removes this node.

Return values

bool

◆ remove_class()

navigation_node::remove_class ( $class )

Removes a CSS class from this node.

Parameters

string $class

Return values

bool	True if the class was successfully removed.

◆ search_for_active_node()

navigation_node::search_for_active_node ( $strength = URL_MATCH_BASE )

Searches all children for the best matching active node.

Parameters

int $strength The url match to be made.

Return values

navigation_node|false

◆ set_force_into_more_menu()

navigation_node::set_force_into_more_menu ( bool $forceintomoremenu = false )

Sets whether the node and its children should be added into a "more" menu whenever possible.

Parameters

bool $forceintomoremenu

◆ set_parent()

navigation_node::set_parent ( navigation_node $parent )

Sets the parent for this node and if this node is active ensures that the tree is properly adjusted as well.

Parameters

navigation_node $parent

◆ set_show_in_secondary_navigation()

navigation_node::set_show_in_secondary_navigation ( bool $show = true )

Sets whether the node and its children should be displayed in the "secondary" navigation when applicable.

Parameters

bool $show

◆ title()

navigation_node::title ( ?string $title = null )

Sets the title for this node and forces Moodle to utilise it.

Note that this method is named identically to the public "title" property of the class, which unfortunately confuses our Mustache renderer, because it will see the method and try and call it without any arguments (hence must be nullable) before trying to access the public property

Parameters

string | null $title

Return values

string

Member Data Documentation

◆ $isexpandable

bool navigation_node::$isexpandable = false

Set to true if we KNOW that this node can be expanded.

◆ $namedtypes

array navigation_node::$namedtypes

protected

Initial value:

= array(0 => 'system', 10 => 'category', 20 => 'course', 30 => 'structure', 40 => 'activity',
                                  50 => 'resource', 60 => 'custom', 70 => 'setting', 71 => 'siteadmin', 80 => 'user',
                                  90 => 'container')

◆ TYPE_ACTIVITY

int const navigation_node::TYPE_ACTIVITY = 40

Activity node type, e.g.

Forum, Quiz 40

◆ TYPE_RESOURCE

int const navigation_node::TYPE_RESOURCE = 50

Resource node type, e.g.

Link to a file, or label 50

The documentation for this class was generated from the following file:

lib/navigationlib.php

Public Member Functions

Static Public Member Functions

Public Attributes

Static Public Attributes

Protected Member Functions

Protected Attributes

Static Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ __construct()

Member Function Documentation

◆ action()

◆ action_link_actions()

◆ actionattributes()

◆ add()

◆ add_class()

◆ add_context_locking_node()

◆ add_node()

◆ build_flat_navigation_list()

◆ check_if_active()

◆ contains_active_node()

◆ create()

◆ find()

◆ find_active_node()

◆ find_all_of_type()

◆ find_expandable()

◆ force_open()

◆ get()

◆ get_children_key_list()

◆ get_content()

◆ get_css_type()

◆ get_siblings()

◆ get_tabs_array()

◆ get_title()

◆ has_action()

◆ has_children()

◆ has_internal_action()

◆ has_siblings()

◆ hide()

◆ is_action_link()

◆ is_hidden()

◆ is_short_branch()

◆ make_active()

◆ override_active_url()

◆ remove()

◆ remove_class()

◆ search_for_active_node()

◆ set_force_into_more_menu()

◆ set_parent()

◆ set_show_in_secondary_navigation()

◆ title()

Member Data Documentation

◆ $isexpandable

◆ $namedtypes

◆ TYPE_ACTIVITY

◆ TYPE_RESOURCE