mediawiki-skins-MinervaNeue/includes/skins/MenuBuilder.php
Kunal Mehta 04e61303c2 Add GPL file header to PHP classes
Change-Id: I2333507372c67ffb8e83777ca6f554aed690de9c
2018-04-15 16:23:10 -07:00

185 lines
4.3 KiB
PHP

<?php
/**
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*/
namespace MediaWiki\Minerva;
use DomainException;
/**
* Model for a menu that can be presented in a skin.
*/
class MenuBuilder {
/**
* @var MenuEntry[]
*/
private $entries = [];
/**
* Get all entries represented as plain old PHP arrays.
*
* @return array
*/
public function getEntries() {
$entryPresenter = function ( MenuEntry $entry ) {
$result = [
'name' => $entry->getName(),
'components' => $entry->getComponents(),
];
if ( $entry->isJSOnly() ) {
$result['class'] = 'jsonly';
}
return $result;
};
return array_map( $entryPresenter, $this->entries );
}
/**
* Insert an entry into the menu.
*
* @param string $name A unique name identifying the menu entry
* @param bool $isJSOnly Whether the menu entry works without JS
* @throws DomainException When the entry already exists
* @return MenuEntry
*/
public function insert( $name, $isJSOnly = false ) {
if ( $this->search( $name ) !== -1 ) {
throw new DomainException( "The \"${name}\" entry already exists." );
}
$this->entries[] = $entry = new MenuEntry( $name, $isJSOnly );
return $entry;
}
/**
* Searches for a menu entry by name.
*
* @param string $name
* @return integer If the menu entry exists, then the 0-based index of the entry; otherwise, -1
*/
private function search( $name ) {
$count = count( $this->entries );
for ( $i = 0; $i < $count; ++$i ) {
if ( $this->entries[$i]->getName() === $name ) {
return $i;
}
}
return -1;
}
/**
* Insert an entry after an existing one.
*
* @param string $targetName The name of the existing entry to insert
* the new entry after
* @param string $name The name of the new entry
* @param bool $isJSOnly Whether the entry works without JS
* @throws DomainException When the existing entry doesn't exist
* @return MenuEntry
*/
public function insertAfter( $targetName, $name, $isJSOnly = false ) {
if ( $this->search( $name ) !== -1 ) {
throw new DomainException( "The \"${name}\" entry already exists." );
}
$index = $this->search( $targetName );
if ( $index === -1 ) {
throw new DomainException( "The \"{$targetName}\" entry doesn't exist." );
}
$entry = new MenuEntry( $name, $isJSOnly );
array_splice( $this->entries, $index + 1, 0, [ $entry ] );
return $entry;
}
}
/**
* Model for a menu entry.
*/
class MenuEntry {
private $name;
private $isJSOnly;
private $components;
/**
* @param string $name
* @param bool $isJSOnly Whether the entry works without JS
*/
public function __construct( $name, $isJSOnly ) {
$this->name = $name;
$this->isJSOnly = $isJSOnly;
$this->components = [];
}
/**
* @return string
*/
public function getName() {
return $this->name;
}
/**
* Gets whether the entry should only be shown if JavaScript is disabled
* in the client.
*
* @return bool
*/
public function isJSOnly() {
return $this->isJSOnly;
}
/**
* @return array
*/
public function getComponents() {
return $this->components;
}
/**
* Add a link to the entry.
*
* An entry can have zero or more links.
*
* @param string $label
* @param string $url
* @param string $className Any additional CSS classes that should added to the output,
* separated by spaces
* @param array $attrs Additional data that can be associated with the component
*
* @return MenuEntry
*/
public function addComponent( $label, $url, $className = '', $attrs = [] ) {
$this->components[] = [
'text' => $label,
'href' => $url,
'class' => $className,
] + $attrs;
return $this;
}
}