114 files declare their use of Element

AccountSettingsForm.php in core/modules/user/src/AccountSettingsForm.php
Actions.php in core/lib/Drupal/Core/Render/Element/Actions.php
AddFormBase.php in core/modules/media_library/src/Form/AddFormBase.php
ArgumentPluginBase.php in core/modules/views/src/Plugin/views/argument/ArgumentPluginBase.php
BlockComponentRenderArray.php in core/modules/layout_builder/src/EventSubscriber/BlockComponentRenderArray.php
BlockViewBuilder.php in core/modules/block/src/BlockViewBuilder.php
book.module in core/modules/book/book.module
Allows users to create and organize related content in an outline.
BookAdminEditForm.php in core/modules/book/src/Form/BookAdminEditForm.php
Button.php in core/lib/Drupal/Core/Render/Element/Button.php
Checkbox.php in core/lib/Drupal/Core/Render/Element/Checkbox.php
ckeditor5.module in core/modules/ckeditor5/ckeditor5.module
claro.theme in core/themes/claro/claro.theme
Functions to support theming in the Claro theme.
ClaroPreRender.php in core/themes/claro/src/ClaroPreRender.php
Color.php in core/lib/Drupal/Core/Render/Element/Color.php
comment.module in core/modules/comment/comment.module
Enables users to comment on published content.
ComponentElement.php in core/lib/Drupal/Core/Render/Element/ComponentElement.php
ComponentValidator.php in core/lib/Drupal/Core/Theme/Component/ComponentValidator.php
ConfigFormBase.php in core/lib/Drupal/Core/Form/ConfigFormBase.php
Container.php in core/lib/Drupal/Core/Render/Element/Container.php
ContentTranslationHandler.php in core/modules/content_translation/src/ContentTranslationHandler.php
content_translation.admin.inc in core/modules/content_translation/content_translation.admin.inc
The content translation administration forms.
Date.php in core/lib/Drupal/Core/Render/Element/Date.php
Details.php in core/lib/Drupal/Core/Render/Element/Details.php
editor.module in core/modules/editor/editor.module
Adds bindings for client-side "text editors" to text formats.
ElementTest.php in core/tests/Drupal/Tests/Core/Render/ElementTest.php
Email.php in core/lib/Drupal/Core/Render/Element/Email.php
EntityField.php in core/modules/views/src/Plugin/views/field/EntityField.php
EntityForm.php in core/lib/Drupal/Core/Entity/EntityForm.php
EntityReferenceItem.php in core/lib/Drupal/Core/Field/Plugin/Field/FieldType/EntityReferenceItem.php
EntityViewBuilder.php in core/lib/Drupal/Core/Entity/EntityViewBuilder.php
EntityViewDisplay.php in core/lib/Drupal/Core/Entity/Entity/EntityViewDisplay.php
EntityViewTrait.php in core/tests/Drupal/Tests/EntityViewTrait.php
ExtraFieldBlock.php in core/modules/layout_builder/src/Plugin/Block/ExtraFieldBlock.php
FieldConfigDeleteForm.php in core/modules/field_ui/src/Form/FieldConfigDeleteForm.php
FieldConfigEditForm.php in core/modules/field_ui/src/Form/FieldConfigEditForm.php
FieldUiTable.php in core/modules/field_ui/src/Element/FieldUiTable.php
field_test.module in core/modules/field/tests/modules/field_test/field_test.module
Helper module for the Field API tests.
field_ui_test.module in core/modules/field_ui/tests/modules/field_ui_test/field_ui_test.module
Field UI test module.
file.module in core/modules/file/file.module
Defines a "managed_file" Form API field and a "file" field for Field module.
File.php in core/lib/Drupal/Core/Render/Element/File.php
FileTransferAuthorizeForm.php in core/lib/Drupal/Core/FileTransfer/Form/FileTransferAuthorizeForm.php
FileWidget.php in core/modules/file/src/Plugin/Field/FieldWidget/FileWidget.php
FilterPluginBase.php in core/modules/views/src/Plugin/views/filter/FilterPluginBase.php
form.inc in core/includes/form.inc
Functions for form and batch generation and processing.
FormatterBase.php in core/lib/Drupal/Core/Field/FormatterBase.php
FormBuilder.php in core/lib/Drupal/Core/Form/FormBuilder.php
FormElementHelper.php in core/lib/Drupal/Core/Form/FormElementHelper.php
FormErrorHandler.php in core/modules/inline_form_errors/src/FormErrorHandler.php
FormErrorHandler.php in core/lib/Drupal/Core/Form/FormErrorHandler.php
FormHelper.php in core/lib/Drupal/Core/Form/FormHelper.php
FormOperations.php in core/modules/workspaces/src/FormOperations.php
FormTest.php in core/modules/system/tests/src/Functional/Form/FormTest.php
FormValidator.php in core/lib/Drupal/Core/Form/FormValidator.php
HandlerBase.php in core/modules/views/src/Plugin/views/HandlerBase.php
Hidden.php in core/lib/Drupal/Core/Render/Element/Hidden.php
image.admin.inc in core/modules/image/image.admin.inc
Administration pages for image settings.
image.field.inc in core/modules/image/image.field.inc
Implement an image field, based on the file module's file field.
ImageButton.php in core/lib/Drupal/Core/Render/Element/ImageButton.php
language.admin.inc in core/modules/language/language.admin.inc
Administration functions for language.module.
LayoutBuilder.php in core/modules/layout_builder/src/Element/LayoutBuilder.php
LayoutBuilderEntityViewDisplay.php in core/modules/layout_builder/src/Entity/LayoutBuilderEntityViewDisplay.php
layout_builder.module in core/modules/layout_builder/layout_builder.module
Provides hook implementations for Layout Builder.
layout_discovery.module in core/modules/layout_discovery/layout_discovery.module
Provides hook implementations for Layout Discovery.
Link.php in core/lib/Drupal/Core/Render/Element/Link.php
ListFloatItem.php in core/modules/options/src/Plugin/Field/FieldType/ListFloatItem.php
ListIntegerItem.php in core/modules/options/src/Plugin/Field/FieldType/ListIntegerItem.php
ListItemBase.php in core/modules/options/src/Plugin/Field/FieldType/ListItemBase.php
ListStringItem.php in core/modules/options/src/Plugin/Field/FieldType/ListStringItem.php
LocalTasksBlock.php in core/lib/Drupal/Core/Menu/Plugin/Block/LocalTasksBlock.php
ManagedFile.php in core/modules/file/src/Element/ManagedFile.php
media.module in core/modules/media/media.module
Provides media items.
media_library.module in core/modules/media_library/media_library.module
Contains hook implementations for the media_library module.
MenuForm.php in core/modules/menu_ui/src/MenuForm.php
MessageViewBuilder.php in core/modules/contact/src/MessageViewBuilder.php
ModulesListForm.php in core/modules/system/src/Form/ModulesListForm.php
NavigationLayout.php in core/modules/navigation/src/NavigationLayout.php
NavigationMenuBlockTest.php in core/modules/navigation/tests/src/Kernel/NavigationMenuBlockTest.php
node.module in core/modules/node/node.module
The core module that allows content to be submitted to the site.
Number.php in core/lib/Drupal/Core/Render/Element/Number.php
olivero.theme in core/themes/olivero/olivero.theme
Functions to support theming in the Olivero theme.
Overview.php in core/modules/forum/src/Form/Overview.php
Password.php in core/lib/Drupal/Core/Render/Element/Password.php
PluginBase.php in core/modules/views/src/Plugin/views/PluginBase.php
Radio.php in core/lib/Drupal/Core/Render/Element/Radio.php
Range.php in core/lib/Drupal/Core/Render/Element/Range.php
RenderElementBase.php in core/lib/Drupal/Core/Render/Element/RenderElementBase.php
RendererTest.php in core/tests/Drupal/Tests/Core/Render/RendererTest.php
Search.php in core/lib/Drupal/Core/Render/Element/Search.php
Section.php in core/modules/layout_builder/src/Section.php
Select.php in core/lib/Drupal/Core/Render/Element/Select.php
SetCustomize.php in core/modules/shortcut/src/Form/SetCustomize.php
system.admin.inc in core/modules/system/system.admin.inc
Admin page callbacks for the system module.
SystemMenuBlockTest.php in core/modules/system/tests/src/Kernel/Block/SystemMenuBlockTest.php
SystemMenuNavigationBlockTest.php in core/modules/navigation/tests/src/Kernel/SystemMenuNavigationBlockTest.php
SystemMenuOffCanvasForm.php in core/modules/system/src/Form/SystemMenuOffCanvasForm.php
Table.php in core/lib/Drupal/Core/Render/Element/Table.php
Tableselect.php in core/lib/Drupal/Core/Render/Element/Tableselect.php
taxonomy.module in core/modules/taxonomy/taxonomy.module
Enables the organization of content into categories.
Tel.php in core/lib/Drupal/Core/Render/Element/Tel.php
Textfield.php in core/lib/Drupal/Core/Render/Element/Textfield.php
TextFormat.php in core/modules/filter/src/Element/TextFormat.php
theme.inc in core/includes/theme.inc
The theme system, which controls the output of Drupal.
ThemeSettingsForm.php in core/modules/system/src/Form/ThemeSettingsForm.php
toolbar.module in core/modules/toolbar/toolbar.module
Administration toolbar for quick access to top level administration items.
Toolbar.php in core/modules/toolbar/src/Element/Toolbar.php
TranslateEditForm.php in core/modules/locale/src/Form/TranslateEditForm.php
umami.theme in core/profiles/demo_umami/themes/umami/umami.theme
Functions to support theming in the Umami theme.
Url.php in core/lib/Drupal/Core/Render/Element/Url.php
user.module in core/modules/user/user.module
Enables the user registration and login system.
ValidationTest.php in core/modules/system/tests/src/Functional/Form/ValidationTest.php
VerticalTabs.php in core/lib/Drupal/Core/Render/Element/VerticalTabs.php
ViewsSelection.php in core/modules/views/src/Plugin/EntityReferenceSelection/ViewsSelection.php
views_ui.theme.inc in core/modules/views_ui/views_ui.theme.inc
Preprocessors and theme functions for the Views UI.
WidgetBase.php in core/lib/Drupal/Core/Field/WidgetBase.php

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