97 lines
		
	
	
		
			2.8 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			97 lines
		
	
	
		
			2.8 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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namespace dokuwiki\Menu;
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use dokuwiki\Extension\Event;
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use dokuwiki\Menu\Item\AbstractItem;
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/**
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 * Class AbstractMenu
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 *
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 * Basic menu functionality. A menu defines a list of AbstractItem that shall be shown.
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 * It contains convenience functions to display the menu in HTML, but template authors can also
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 * just accesst the items via getItems() and create the HTML as however they see fit.
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 */
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abstract class AbstractMenu implements MenuInterface {
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    /** @var string[] list of Item classes to load */
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    protected $types = array();
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    /** @var int the context this menu is used in */
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    protected $context = AbstractItem::CTX_DESKTOP;
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    /** @var string view identifier to be set in the event */
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    protected $view = '';
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    /**
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     * AbstractMenu constructor.
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     *
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     * @param int $context the context this menu is used in
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     */
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    public function __construct($context = AbstractItem::CTX_DESKTOP) {
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        $this->context = $context;
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    }
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    /**
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     * Get the list of action items in this menu
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     *
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     * @return AbstractItem[]
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     * @triggers MENU_ITEMS_ASSEMBLY
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     */
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    public function getItems() {
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        $data = array(
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            'view' => $this->view,
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            'items' => array(),
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        );
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        Event::createAndTrigger('MENU_ITEMS_ASSEMBLY', $data, array($this, 'loadItems'));
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        return $data['items'];
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    }
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    /**
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     * Default action for the MENU_ITEMS_ASSEMBLY event
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     *
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     * @see getItems()
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     * @param array $data The plugin data
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     */
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    public function loadItems(&$data) {
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        foreach($this->types as $class) {
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            try {
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                $class = "\\dokuwiki\\Menu\\Item\\$class";
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                /** @var AbstractItem $item */
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                $item = new $class();
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                if(!$item->visibleInContext($this->context)) continue;
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                $data['items'][] = $item;
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            } catch(\RuntimeException $ignored) {
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                // item not available
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            }
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        }
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    }
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    /**
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     * Generate HTML list items for this menu
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     *
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     * This is a convenience method for template authors. If you need more fine control over the
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     * output, use getItems() and build the HTML yourself
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     *
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     * @param string|false $classprefix create a class from type with this prefix, false for no class
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     * @param bool $svg add the SVG link
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     * @return string
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     */
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    public function getListItems($classprefix = '', $svg = true) {
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        $html = '';
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        foreach($this->getItems() as $item) {
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            if($classprefix !== false) {
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                $class = ' class="' . $classprefix . $item->getType() . '"';
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            } else {
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                $class = '';
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            }
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            $html .= "<li$class>";
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            $html .= $item->asHtmlLink(false, $svg);
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            $html .= '</li>';
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        }
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        return $html;
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    }
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}
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