icingaweb2/library/Icinga/Web/Navigation/NavigationItem.php

879 lines
19 KiB
PHP

<?php
/* Icinga Web 2 | (c) 2015 Icinga Development Team | GPLv2+ */
namespace Icinga\Web\Navigation;
use Exception;
use InvalidArgumentException;
use IteratorAggregate;
use Icinga\Application\Icinga;
use Icinga\Application\Logger;
use Icinga\Exception\IcingaException;
use Icinga\Exception\ProgrammingError;
use Icinga\Web\Navigation\Renderer\NavigationItemRenderer;
use Icinga\Web\Url;
/**
* A navigation item
*/
class NavigationItem implements IteratorAggregate
{
/**
* Alternative markup element for items without a url
*
* @var string
*/
const LINK_ALTERNATIVE = 'span';
/**
* The class namespace where to locate navigation type renderer classes
*/
const RENDERER_NS = 'Web\\Navigation\\Renderer';
/**
* Whether this item is active
*
* @var bool
*/
protected $active;
/**
* The CSS class used for the outer li element
*
* @var string
*/
protected $cssClass;
/**
* This item's priority
*
* The priority defines when the item is rendered in relation to its parent's childs.
*
* @var int
*/
protected $priority;
/**
* The attributes of this item's element
*
* @var array
*/
protected $attributes;
/**
* This item's children
*
* @var Navigation
*/
protected $children;
/**
* This item's icon
*
* @var string
*/
protected $icon;
/**
* This item's name
*
* @var string
*/
protected $name;
/**
* This item's label
*
* @var string
*/
protected $label;
/**
* The item's description
*
* @var string
*/
protected $description;
/**
* This item's parent
*
* @var NavigationItem
*/
protected $parent;
/**
* This item's url
*
* @var Url
*/
protected $url;
/**
* This item's url target
*
* @var string
*/
protected $target;
/**
* Additional parameters for this item's url
*
* @var array
*/
protected $urlParameters;
/**
* This item's renderer
*
* @var NavigationItemRenderer
*/
protected $renderer;
/**
* Whether to render this item
*
* @var bool
*/
protected $render;
/**
* Create a new NavigationItem
*
* @param string $name
* @param array $properties
*/
public function __construct($name, array $properties = null)
{
$this->setName($name);
$this->children = new Navigation();
if (! empty($properties)) {
$this->setProperties($properties);
}
$this->init();
}
/**
* Initialize this NavigationItem
*/
public function init()
{
}
/**
* {@inheritdoc}
*/
public function getIterator()
{
return $this->getChildren();
}
/**
* Return whether this item is active
*
* @return bool
*/
public function getActive()
{
if ($this->active === null) {
$this->active = false;
if ($this->getUrl() !== null && Icinga::app()->getRequest()->getUrl()->matches($this->getUrl())) {
$this->setActive();
} elseif ($this->hasChildren()) {
foreach ($this->getChildren() as $item) {
/** @var NavigationItem $item */
if ($item->getActive()) {
// Do nothing, a true active state is automatically passed to all parents
}
}
}
}
return $this->active;
}
/**
* Set whether this item is active
*
* If it's active and has a parent, the parent gets activated as well.
*
* @param bool $active
*
* @return $this
*/
public function setActive($active = true)
{
$this->active = (bool) $active;
if ($this->active && $this->getParent() !== null) {
$this->getParent()->setActive();
}
return $this;
}
/**
* Get the CSS class used for the outer li element
*
* @return string
*/
public function getCssClass()
{
return $this->cssClass;
}
/**
* Set the CSS class to use for the outer li element
*
* @param string $class
*
* @return $this
*/
public function setCssClass($class)
{
$this->cssClass = (string) $class;
return $this;
}
/**
* Return this item's priority
*
* @return int
*/
public function getPriority()
{
return $this->priority !== null ? $this->priority : 100;
}
/**
* Set this item's priority
*
* @param int $priority
*
* @return $this
*/
public function setPriority($priority)
{
$this->priority = (int) $priority;
return $this;
}
/**
* Return the value of the given element attribute
*
* @param string $name
* @param mixed $default
*
* @return mixed
*/
public function getAttribute($name, $default = null)
{
$attributes = $this->getAttributes();
return array_key_exists($name, $attributes) ? $attributes[$name] : $default;
}
/**
* Set the value of the given element attribute
*
* @param string $name
* @param mixed $value
*
* @return $this
*/
public function setAttribute($name, $value)
{
$this->attributes[$name] = $value;
return $this;
}
/**
* Return the attributes of this item's element
*
* @return array
*/
public function getAttributes()
{
return $this->attributes ?: array();
}
/**
* Set the attributes of this item's element
*
* @param array $attributes
*
* @return $this
*/
public function setAttributes(array $attributes)
{
$this->attributes = $attributes;
return $this;
}
/**
* Add a child to this item
*
* If the child is active this item gets activated as well.
*
* @param NavigationItem $child
*
* @return $this
*/
public function addChild(NavigationItem $child)
{
$this->getChildren()->addItem($child->setParent($this));
if ($child->getActive()) {
$this->setActive();
}
return $this;
}
/**
* Return this item's children
*
* @return Navigation
*/
public function getChildren()
{
return $this->children;
}
/**
* Return whether this item has any children
*
* @return bool
*/
public function hasChildren()
{
return ! $this->getChildren()->isEmpty();
}
/**
* Set this item's children
*
* @param array|Navigation $children
*
* @return $this
*/
public function setChildren($children)
{
if (is_array($children)) {
$children = Navigation::fromArray($children);
} elseif (! $children instanceof Navigation) {
throw new InvalidArgumentException('Argument $children must be of type array or Navigation');
}
foreach ($children as $item) {
$item->setParent($this);
}
$this->children = $children;
return $this;
}
/**
* Return this item's icon
*
* @return string
*/
public function getIcon()
{
return $this->icon;
}
/**
* Set this item's icon
*
* @param string $icon
*
* @return $this
*/
public function setIcon($icon)
{
$this->icon = $icon;
return $this;
}
/**
* Return this item's name escaped with only ASCII chars and/or digits
*
* @return string
*/
protected function getEscapedName()
{
return preg_replace('~[^a-zA-Z0-9]~', '_', $this->getName());
}
/**
* Return a unique version of this item's name
*
* @return string
*/
public function getUniqueName()
{
if ($this->getParent() === null) {
return 'navigation-' . $this->getEscapedName();
}
return $this->getParent()->getUniqueName() . '-' . $this->getEscapedName();
}
/**
* Return this item's name
*
* @return string
*/
public function getName()
{
return $this->name;
}
/**
* Set this item's name
*
* @param string $name
*
* @return $this
*/
public function setName($name)
{
$this->name = $name;
return $this;
}
/**
* Set this item's parent
*
* @param NavigationItem $parent
*
* @return $this
*/
public function setParent(NavigationItem $parent)
{
$this->parent = $parent;
return $this;
}
/**
* Return this item's parent
*
* @return NavigationItem
*/
public function getParent()
{
return $this->parent;
}
/**
* Return this item's label
*
* @return string
*/
public function getLabel()
{
return $this->label !== null ? $this->label : $this->getName();
}
/**
* Set this item's label
*
* @param string $label
*
* @return $this
*/
public function setLabel($label)
{
$this->label = $label;
return $this;
}
/**
* Get the item's description
*
* @return string
*/
public function getDescription()
{
return $this->description;
}
/**
* Set the item's description
*
* @param string $description
*
* @return $this
*/
public function setDescription($description)
{
$this->description = $description;
return $this;
}
/**
* Set this item's url target
*
* @param string $target
*
* @return $this
*/
public function setTarget($target)
{
$this->target = $target;
return $this;
}
/**
* Return this item's url target
*
* @return string
*/
public function getTarget()
{
return $this->target;
}
/**
* Return this item's url
*
* @return Url
*/
public function getUrl()
{
if ($this->url === null && $this->hasChildren()) {
$this->setUrl(Url::fromPath('navigation/dashboard', array('name' => strtolower($this->getName()))));
}
return $this->url;
}
/**
* Set this item's url
*
* @param Url|string $url
*
* @return $this
*
* @throws InvalidArgumentException If the given url is neither of type
*/
public function setUrl($url)
{
if (is_string($url)) {
$url = Url::fromPath($url);
} elseif (! $url instanceof Url) {
throw new InvalidArgumentException('Argument $url must be of type string or Url');
}
$this->url = $url;
return $this;
}
/**
* Return the value of the given url parameter
*
* @param string $name
* @param mixed $default
*
* @return mixed
*/
public function getUrlParameter($name, $default = null)
{
$parameters = $this->getUrlParameters();
return isset($parameters[$name]) ? $parameters[$name] : $default;
}
/**
* Set the value of the given url parameter
*
* @param string $name
* @param mixed $value
*
* @return $this
*/
public function setUrlParameter($name, $value)
{
$this->urlParameters[$name] = $value;
return $this;
}
/**
* Return all additional parameters for this item's url
*
* @return array
*/
public function getUrlParameters()
{
return $this->urlParameters ?: array();
}
/**
* Set additional parameters for this item's url
*
* @param array $urlParameters
*
* @return $this
*/
public function setUrlParameters(array $urlParameters)
{
$this->urlParameters = $urlParameters;
return $this;
}
/**
* Set this item's properties
*
* Unknown properties (no matching setter) are considered as element attributes.
*
* @param array $properties
*
* @return $this
*/
public function setProperties(array $properties)
{
foreach ($properties as $name => $value) {
$setter = 'set' . ucfirst($name);
if (method_exists($this, $setter)) {
$this->$setter($value);
} else {
$this->setAttribute($name, $value);
}
}
return $this;
}
/**
* Merge this item with the given one
*
* @param NavigationItem $item
*
* @return $this
*/
public function merge(NavigationItem $item)
{
if ($this->conflictsWith($item)) {
throw new ProgrammingError('Cannot merge, conflict detected.');
}
if ($this->priority === null) {
$priority = $item->getPriority();
if ($priority !== 100) {
$this->setPriority($priority);
}
}
if (! $this->getIcon()) {
$this->setIcon($item->getIcon());
}
if ($this->getLabel() === $this->getName() && $item->getLabel() !== $item->getName()) {
$this->setLabel($item->getLabel());
}
if ($this->target === null && ($target = $item->getTarget()) !== null) {
$this->setTarget($target);
}
if ($this->renderer === null) {
$renderer = $item->getRenderer();
if (get_class($renderer) !== 'NavigationItemRenderer') {
$this->setRenderer($renderer);
}
}
foreach ($item->getAttributes() as $name => $value) {
$this->setAttribute($name, $value);
}
foreach ($item->getUrlParameters() as $name => $value) {
$this->setUrlParameter($name, $value);
}
if ($item->hasChildren()) {
$this->getChildren()->merge($item->getChildren());
}
return $this;
}
/**
* Return whether it's possible to merge this item with the given one
*
* @param NavigationItem $item
*
* @return bool
*/
public function conflictsWith(NavigationItem $item)
{
if (! $item instanceof $this) {
return true;
}
if ($this->getUrl() === null || $item->getUrl() === null) {
return false;
}
return !$this->getUrl()->matches($item->getUrl());
}
/**
* Create and return the given renderer
*
* @param string|array $name
*
* @return NavigationItemRenderer
*/
protected function createRenderer($name)
{
if (is_array($name)) {
$options = array_splice($name, 1);
$name = $name[0];
} else {
$options = array();
}
$renderer = null;
foreach (Icinga::app()->getModuleManager()->getLoadedModules() as $module) {
$classPath = 'Icinga\\Module\\' . ucfirst($module->getName()) . '\\' . static::RENDERER_NS . '\\' . $name;
if (class_exists($classPath)) {
$renderer = new $classPath($options);
break;
}
}
if ($renderer === null) {
$classPath = 'Icinga\\' . static::RENDERER_NS . '\\' . $name;
if (class_exists($classPath)) {
$renderer = new $classPath($options);
}
}
if ($renderer === null) {
throw new ProgrammingError(
'Cannot find renderer "%s" for navigation item "%s"',
$name,
$this->getName()
);
} elseif (! $renderer instanceof NavigationItemRenderer) {
throw new ProgrammingError('Class %s must inherit from NavigationItemRenderer', $classPath);
}
return $renderer;
}
/**
* Set this item's renderer
*
* @param string|array|NavigationItemRenderer $renderer
*
* @return $this
*
* @throws InvalidArgumentException If the $renderer argument is neither a string nor a NavigationItemRenderer
*/
public function setRenderer($renderer)
{
if (is_string($renderer) || is_array($renderer)) {
$renderer = $this->createRenderer($renderer);
} elseif (! $renderer instanceof NavigationItemRenderer) {
throw new InvalidArgumentException(
'Argument $renderer must be of type string, array or NavigationItemRenderer'
);
}
$this->renderer = $renderer;
return $this;
}
/**
* Return this item's renderer
*
* @return NavigationItemRenderer
*/
public function getRenderer()
{
if ($this->renderer === null) {
$this->setRenderer('NavigationItemRenderer');
}
return $this->renderer;
}
/**
* Set whether this item should be rendered
*
* @param bool $state
*
* @return $this
*/
public function setRender($state = true)
{
$this->render = (bool) $state;
return $this;
}
/**
* Return whether this item should be rendered
*
* @return bool
*/
public function getRender()
{
if ($this->render === null) {
return $this->getUrl() !== null;
}
return $this->render;
}
/**
* Return whether this item should be rendered
*
* Alias for NavigationItem::getRender().
*
* @return bool
*/
public function shouldRender()
{
return $this->getRender();
}
/**
* Return this item rendered to HTML
*
* @return string
*/
public function render()
{
try {
return $this->getRenderer()->setItem($this)->render();
} catch (Exception $e) {
Logger::error(
'Could not invoke custom navigation item renderer. %s in %s:%d with message: %s',
get_class($e),
$e->getFile(),
$e->getLine(),
$e->getMessage()
);
$renderer = new NavigationItemRenderer();
return $renderer->render($this);
}
}
/**
* Return this item rendered to HTML
*
* @return string
*/
public function __toString()
{
try {
return $this->render();
} catch (Exception $e) {
return IcingaException::describe($e);
}
}
}