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<?php
/**
* Class ContentBar
* ContentBar for page, with optional ActionMenu, Table of contents and breadcrumbs.
*
* @author Thomas Hackl <hackl@data-quest.de>
* @license GPL2 or any later version
* @since Stud.IP 5.0
*/
class ContentBar
{
public $infoText = '';
public $icon = '';
public $toc = null;
public $actionMenu = null;
/**
* The singleton instance of the container
*/
protected static $instance = null;
/**
* Returns the instance of this container to ensure there is only one
* instance.
*
* @param TOCItem $toc Table of contents object.
* @param string $info Some information to show, like creation date, author etc.
* @param Icon|null $icon An icon to show in content bar.
* @param ActionMenu|null $actionMenu Optional action menu for page actions.
* @return ContentBar
* @static
*/
public static function get(): ContentBar
{
if (static::$instance === null) {
static::$instance = new static;
}
return static::$instance;
}
/**
* Private constructor to ensure that the singleton Get() method is always
* used.
*
* @see ContentBar::get
*/
protected function __construct()
{
}
/**
* Provide some info text.
* @param string $info
* @return ContentBar $this Return current instance for method chaining.
*/
public function setInfo(string $info)
{
$this->infoText = $info;
return $this;
}
/**
* Set an icon.
* @param Icon $icon
* @return ContentBar $this Return current instance for method chaining.
*/
public function setIcon(Icon $icon)
{
$this->icon = $icon;
return $this;
}
/**
* Set a table of contents object.
* @param TOCItem $toc
* @return ContentBar $this Return current instance for method chaining.
*/
public function setTOC(TOCItem $toc)
{
$this->toc = $toc;
return $this;
}
/**
* Provide an action menu.
* @param ActionMenu $actionMenu
* @return ContentBar $this Return current instance for method chaining.
*/
public function setActionMenu(ActionMenu $actionMenu)
{
$this->actionMenu = $actionMenu;
return $this;
}
/**
* Render the content bar from corresponding template
* @return string
*/
public function render()
{
$template = $GLOBALS['template_factory']->open('contentbar/contentbar');
$template->actionMenu = $this->actionMenu;
$template->info = $this->infoText;
// Table of contents
$tocTemplate = $GLOBALS['template_factory']->open('toc/generic-toc-list');
$tocTemplate->set_attribute('root', $this->toc);
$template->toc = $this->toc;
$template->ttpl = $tocTemplate;
// Breadcrumbs
$brdcrmb = $GLOBALS['template_factory']->open('toc/generic-toc-breadcrumb');
$brdcrmb->set_attribute('item', $this->toc->getActiveItem() ?: $this->toc);
$template->breadcrumbs = $brdcrmb;
$template->icon = $this->icon;
return $template->render();
}
/**
* Magic method: when ContentBar is used as a string, this will just call
* the render method, returning a string representation of this object.
* @return string
*/
public function __toString()
{
return $this->render();
}
}
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