API Deprecate API being removed in CMS 6

src/Controllers/ElementSiteTreeFilterSearch.php

@@ -7,10 +7,14 @@
 use SilverStripe\CMS\Model\SiteTree;
 use SilverStripe\Core\Config\Configurable;
 use SilverStripe\Core\Convert;
+use SilverStripe\Dev\Deprecation;
 use SilverStripe\Forms\DateField;
 use SilverStripe\ORM\ArrayList;
 use SilverStripe\ORM\DataList;
 
+/**
+ * @deprecated 5.4.0 Will be removed without equivalent functionality
+ */
 class ElementSiteTreeFilterSearch extends CMSSiteTreeFilter_Search
 {
     use Configurable;
@@ -30,6 +34,12 @@ class ElementSiteTreeFilterSearch extends CMSSiteTreeFilter_Search
      */
     private $extraTermFilters = [];
 
+    public function __construct($params = null)
+    {
+        Deprecation::noticeWithNoReplacment('5.4.0', scope: Deprecation::SCOPE_CLASS);
+        parent::__construct($params);
+    }
+
     /**
      * We can't use ORM filtering for PHP methods, so we'll perform our own PHP "search" and get a list of
      * matching SiteTree record IDs, then add that to the original ORM query.

src/Extensions/ElementalCMSMainExtension.php

@@ -4,14 +4,22 @@
 
 use SilverStripe\CMS\Controllers\CMSMain;
 use SilverStripe\Core\Extension;
+use SilverStripe\Dev\Deprecation;
 use SilverStripe\Forms\DropdownField;
 use SilverStripe\Forms\Form;
 
 /**
  * @extends Extension<CMSMain>
+ * @deprecated 5.4.0 Will be removed without equivalent functionality
  */
 class ElementalCMSMainExtension extends Extension
 {
+    public function __construct()
+    {
+        Deprecation::noticeWithNoReplacment('5.4.0', scope: Deprecation::SCOPE_CLASS);
+        parent::__construct();
+    }
+
     /**
      * Remove the empty default string on the class filter, which adds "All pages" again. This is already
      * added by ElementSiteTreeFilterSearch.

src/Extensions/ElementalPageExtension.php

@@ -6,6 +6,7 @@
 use DNADesign\Elemental\Models\ElementalArea;
 use SilverStripe\CMS\Model\SiteTree;
 use SilverStripe\Control\Controller;
+use SilverStripe\Dev\Deprecation;
 use SilverStripe\View\Parsers\HTMLValue;
 use SilverStripe\View\SSViewer;
 
@@ -80,9 +81,11 @@ public function getElementsForSearch()
 
     /**
      * Returns the contents of all Elements on the pages ElementalAreas for use in CMS search
+     * @deprecated 5.4.0 Will be removed without equivalent functionality
      */
     public function getContentFromElementsForCmsSearch(): string
     {
+        Deprecation::noticeWithNoReplacment('5.4.0');
         $output = [];
         $elements = $this->getEagerLoadedElements();
         /** @var BaseElement $element */

src/Models/BaseElement.php

@@ -75,6 +75,7 @@ class BaseElement extends DataObject implements CMSPreviewable
     /**
      * List of fields to exclude from CMS SiteTree seatch
      * @see ElementSiteTreeFilterSearch::applyDefaultFilters()
+     * @deprecated 5.4.0 Will be removed without equivalent functionality
      */
     private static array $fields_excluded_from_cms_search = [
         'ExtraClass',
@@ -544,9 +545,11 @@ public function getContentForSearchIndex(): string
 
     /**
      * Provides content for CMS search if ElementSiteTreeFilterSearch.render_elements is false
+     * @deprecated 5.4.0 Will be removed without equivalent functionality
      */
     public function getContentForCmsSearch(): string
     {
+        Deprecation::noticeWithNoReplacment('5.4.0');
         $fieldNames = $this->getTextualDatabaseFieldNames();
         $excludedFieldNames = $this->getFieldNamesExcludedFromCmsSearch();
         $contents = [];