Allow the display of deleted items via plugin

com.woltlab.wcf/templates/deletedContentList.tpl

@@ -1,19 +1,7 @@
 {capture assign='pageTitle'}{lang}wcf.moderation.deletedContent.{@$objectType}{/lang}{/capture}
 
 {capture assign='sidebarRight'}
-	<section class="box" data-static-box-identifier="com.woltlab.wcf.DeletedContentListMenu">
-		<h2 class="boxTitle">{lang}wcf.moderation.deletedContent.objectTypes{/lang}</h2>
-
-		<div class="boxContent">
-			<nav>
-				<ul class="boxMenu">
-					{foreach from=$availableObjectTypes item=availableObjectType}
-						<li{if $objectType == $availableObjectType->objectType} class="active"{/if}><a class="boxMenuLink" href="{link controller='DeletedContentList'}objectType={@$availableObjectType->objectType}{/link}">{lang}wcf.moderation.deletedContent.objectType.{@$availableObjectType->objectType}{/lang}</a></li>
-					{/foreach}
-				</ul>
-			</nav>
-		</div>
-	</section>
+	{unsafe:$deletedItemsBox->render()}
 {/capture}
 
 {capture assign='contentTitle'}{lang}wcf.moderation.deletedContent.{@$objectType}{/lang}{/capture}

com.woltlab.wcf/templates/deletedItemsBox.tpl

@@ -0,0 +1,15 @@
+<section class="box" data-static-box-identifier="com.woltlab.wcf.DeletedContentListMenu">
+	<h2 class="boxTitle">{lang}wcf.moderation.deletedContent.objectTypes{/lang}</h2>
+
+	<div class="boxContent">
+		<nav>
+			<ul class="boxMenu">
+				{foreach from=$types item=type}
+					<li{if $type->id === $activeId} class="active"{/if}>
+						<a class="boxMenuLink" href="{$type->link}">{lang}{$type->languageItem}{/lang}</a>
+					</li>
+				{/foreach}
+			</ul>
+		</nav>
+	</div>
+</section>

wcfsetup/install/files/lib/event/moderation/DeletedItemsCollecting.class.php

@@ -0,0 +1,61 @@
+<?php
+
+namespace wcf\event\moderation;
+
+use wcf\data\object\type\ObjectTypeCache;
+use wcf\event\IPsr14Event;
+use wcf\page\DeletedContentListPage;
+use wcf\system\moderation\DeletedItems;
+use wcf\system\request\LinkHandler;
+
+/**
+ * Requests the collection of deleted item types.
+ *
+ * @author      Marcel Werk
+ * @copyright   2001-2025 WoltLab GmbH
+ * @license     GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
+ * @since       6.2
+ */
+final class DeletedItemsCollecting implements IPsr14Event
+{
+    /**
+     * @var list<DeletedItems>
+     */
+    private array $types = [];
+
+    public function __construct()
+    {
+        $this->loadLegacyProviders();
+    }
+
+    public function register(DeletedItems $type): void
+    {
+        $this->types[] = $type;
+    }
+
+    /**
+     * @return list<DeletedItems>
+     */
+    public function getTypes(): array
+    {
+        return $this->types;
+    }
+
+    /**
+     * @deprecated 6.2
+     */
+    private function loadLegacyProviders(): void
+    {
+        $objectTypes = ObjectTypeCache::getInstance()->getObjectTypes('com.woltlab.wcf.deletedContent');
+        foreach ($objectTypes as $objectType) {
+            $this->register(new DeletedItems(
+                $objectType->objectType,
+                'wcf.moderation.deletedContent.objectType.' . $objectType->objectType,
+                LinkHandler::getInstance()->getControllerLink(
+                    DeletedContentListPage::class,
+                    ['objectType' => $objectType->objectType]
+                )
+            ));
+        }
+    }
+}

wcfsetup/install/files/lib/page/DeletedContentListPage.class.php

@@ -2,10 +2,14 @@
 
 namespace wcf\page;
 
+use Laminas\Diactoros\Response\RedirectResponse;
 use wcf\data\DatabaseObject;
 use wcf\data\DatabaseObjectList;
 use wcf\data\object\type\ObjectTypeCache;
+use wcf\event\moderation\DeletedItemsCollecting;
+use wcf\system\event\EventHandler;
 use wcf\system\exception\IllegalLinkException;
+use wcf\system\moderation\DeletedItemsBoxComponent;
 use wcf\system\WCF;
 
 /**
@@ -42,23 +46,36 @@ public function readParameters()
     {
         parent::readParameters();
 
-        // get object type
         if (isset($_REQUEST['objectType'])) {
             $this->objectType = ObjectTypeCache::getInstance()->getObjectTypeByName(
                 'com.woltlab.wcf.deletedContent',
                 $_REQUEST['objectType']
             );
+
+            if ($this->objectType === null) {
+                throw new IllegalLinkException();
+            }
         } else {
-            // use first object type
-            $objectTypes = ObjectTypeCache::getInstance()->getObjectTypes('com.woltlab.wcf.deletedContent');
-            if (!empty($objectTypes)) {
-                $this->objectType = \reset($objectTypes);
+            $link = $this->getFirstTypeLink();
+            if ($link === null) {
+                throw new IllegalLinkException();
             }
+
+            return new RedirectResponse($link);
         }
+    }
 
-        if ($this->objectType === null) {
-            throw new IllegalLinkException();
+    private function getFirstTypeLink(): ?string
+    {
+        $event = new DeletedItemsCollecting();
+        EventHandler::getInstance()->fire($event);
+        $types = $event->getTypes();
+
+        if ($types === []) {
+            return null;
         }
+
+        return reset($types)->link;
     }
 
     /**
@@ -77,7 +94,7 @@ public function assignVariables()
         parent::assignVariables();
 
         WCF::getTPL()->assign([
-            'availableObjectTypes' => ObjectTypeCache::getInstance()->getObjectTypes('com.woltlab.wcf.deletedContent'),
+            'deletedItemsBox' => new DeletedItemsBoxComponent($this->objectType->objectType),
             'objectType' => $this->objectType->objectType,
             'resultListTemplateName' => $this->objectType->getProcessor()->getTemplateName(),
             'resultListApplication' => $this->objectType->getProcessor()->getApplication(),

wcfsetup/install/files/lib/system/moderation/AbstractDeletedContentProvider.class.php

@@ -11,6 +11,7 @@
  * @author  Matthias Schmidt
  * @copyright   2001-2019 WoltLab GmbH
  * @license GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
+ * @deprecated 6.2 Use `DeletedItems` instead
  *
  * @template T of DatabaseObjectList
  * @implements IDeletedContentProvider<T>

wcfsetup/install/files/lib/system/moderation/DeletedItems.class.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace wcf\system\moderation;
+
+/**
+ * Represents a type of deleted items.
+ *
+ * @author      Marcel Werk
+ * @copyright   2001-2025 WoltLab GmbH
+ * @license     GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
+ * @since       6.2
+ */
+class DeletedItems
+{
+    public function __construct(
+        public readonly string $id,
+        public readonly string $languageItem,
+        public readonly string $link
+    ) {}
+}

wcfsetup/install/files/lib/system/moderation/DeletedItemsBoxComponent.class.php

@@ -0,0 +1,45 @@
+<?php
+
+namespace wcf\system\moderation;
+
+use wcf\event\moderation\DeletedItemsCollecting;
+use wcf\system\event\EventHandler;
+use wcf\system\WCF;
+
+/**
+ * Represents the deleted items box.
+ *
+ * @author      Marcel Werk
+ * @copyright   2001-2025 WoltLab GmbH
+ * @license     GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
+ * @since       6.2
+ */
+class DeletedItemsBoxComponent
+{
+    public function __construct(
+        public readonly string $activeId,
+    ) {}
+
+    public function render(): string
+    {
+        return WCF::getTPL()->render(
+            'wcf',
+            'deletedItemsBox',
+            [
+                'types' => $this->getTypes(),
+                'activeId' => $this->activeId,
+            ],
+        );
+    }
+
+    /**
+     * @return list<DeletedItems>
+     */
+    private function getTypes(): array
+    {
+        $event = new DeletedItemsCollecting();
+        EventHandler::getInstance()->fire($event);
+
+        return $event->getTypes();
+    }
+}

wcfsetup/install/files/lib/system/moderation/IDeletedContentProvider.class.php

@@ -10,6 +10,7 @@
  * @author  Marcel Werk
  * @copyright   2001-2019 WoltLab GmbH
  * @license GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
+ * @deprecated 6.2 Use `DeletedItems` instead
  *
  * @template T of DatabaseObjectList
  */