Allow overriding text and CSS class for home menu entry

* Introduce a HomeMenuEntry class and use it for adding the home menu link
* Provide override methods for text and CSS class

Bug: T223210
Change-Id: I37160887478cba829a6e2f10a4d8f87d95167556

includes/menu/Definitions.php

@@ -126,7 +126,7 @@ final class Definitions {
 	 * @param Group $group
 	 */
 	public function insertHomeItem( Group $group ) {
-		$group->insertEntry( new SingleMenuEntry(
+		$group->insertEntry( new HomeMenuEntry(
 			'home',
 			$this->context->msg( 'mobile-frontend-home-button' )->escaped(),
 			Title::newMainPage()->getLocalURL()

includes/menu/HomeMenuEntry.php

@@ -0,0 +1,101 @@
+<?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.
+ */
+
+namespace MediaWiki\Minerva\Menu;
+
+use MinervaUI;
+
+/**
+ * Class for defining a home menu entry in Special:MobileMenu
+ */
+final class HomeMenuEntry implements IMenuEntry {
+
+	/**
+	 * @var string
+	 */
+	private $name;
+
+	/**
+	 * @var array
+	 */
+	private $component;
+
+	/**
+	 * Override the text used in the home menu entry.
+	 *
+	 * @param string $text
+	 * @return $this
+	 */
+	public function overrideText( $text ) {
+		$this->component['text'] = $text;
+		return $this;
+	}
+
+	/**
+	 * Override the CSS class used in the home menu entry.
+	 *
+	 * @param string $cssClass
+	 * @return $this
+	 */
+	public function overrideCssClass( $cssClass ) {
+		$this->component['class'] = $cssClass;
+		return $this;
+	}
+
+	/**
+	 * Create a home menu element with one component
+	 *
+	 * @param string $name An unique menu element identifier
+	 * @param string $text Text to show on menu element
+	 * @param string $url URL menu element points to
+	 * @param bool|string $trackClicks Should clicks be tracked. To override the tracking code
+	 * pass the tracking code as string
+	 */
+	public function __construct( $name, $text, $url, $trackClicks = true ) {
+		$this->name = $name;
+		$this->component = [
+			'text' => $text,
+			'href' => $url,
+			'class' => trim( MinervaUI::iconClass( $name, 'before' ) )
+		];
+		if ( $trackClicks !== false ) {
+			$this->component['data-event-name'] = $trackClicks === true ? $name : $trackClicks;
+		}
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public function getName() {
+		return $this->name;
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public function getCSSClasses(): array {
+		return [];
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public function getComponents(): array {
+		return [ $this->component ];
+	}
+
+}

tests/phpunit/unit/menu/HomeMenuEntryTest.php

@@ -0,0 +1,57 @@
+<?php
+
+namespace Tests\MediaWiki\Minerva\Menu;
+
+use MediaWiki\Minerva\Menu\HomeMenuEntry;
+
+/**
+ * @group MinervaNeue
+ * @coversDefaultClass \MediaWiki\Minerva\Menu\HomeMenuEntry
+ */
+class HomeMenuEntryTest extends \MediaWikiUnitTestCase {
+
+	/**
+	 * @covers ::__construct
+	 * @covers ::getName
+	 * @covers ::getCSSClasses
+	 * @covers ::getComponents
+	 */
+	public function testConstruct() {
+		$name = 'foo';
+		$text = 'bar';
+		$url = 'http://baz';
+		$entry = new HomeMenuEntry( $name, $text, $url );
+		$this->assertSame( $name, $entry->getName() );
+		$this->assertSame( [], $entry->getCSSClasses() );
+		$this->assertSame( [ [
+			'text' => $text,
+			'href' => $url,
+			'class' => 'mw-ui-icon mw-ui-icon-before mw-ui-icon-minerva-foo',
+			'data-event-name' => 'foo'
+		] ], $entry->getComponents() );
+	}
+
+	/**
+	 * @covers ::overrideCssClass
+	 * @covers ::overrideText
+	 * @covers ::getComponents
+	 */
+	public function testOverride() {
+		$entry = new HomeMenuEntry( 'foo', 'bar', 'http://baz' );
+		$component = current( $entry->getComponents() );
+		$this->assertSame( 'bar', $component['text'] );
+		$this->assertSame(
+			'mw-ui-icon mw-ui-icon-before mw-ui-icon-minerva-foo',
+			$component['class']
+		);
+		$entry->overrideText( 'blah' )
+			->overrideCssClass( 'classy' );
+		$component = current( $entry->getComponents() );
+			$this->assertSame( 'blah', $component['text'] );
+		$this->assertSame(
+			'classy',
+			$component['class']
+		);
+	}
+
+}