Note: this list is generated by looking for the string for this theme hook, so it may include some references that are not actually using this theme hook.

Block::form in core/modules/layout/includes/block.class.inc
Build the settings form for editing this block.
BlockHero::formSubmit in core/modules/layout/includes/block.hero.inc
Submit handler to save the form settings.
BlockTestCase::testCustomBlock in core/modules/block/tests/block.test
Test creating custom block, editing, and then deleting it.
BlockTestCase::testCustomBlockFormat in core/modules/block/tests/block.test
Test creating custom block using Raw HTML (full_html).
BlockText::form in core/modules/layout/includes/block.text.inc
Builds the block's configuration form.
BlockText::formSubmit in core/modules/layout/includes/block.text.inc
Submit handler to save the form settings.
BlockText::formValidate in core/modules/layout/includes/block.text.inc
Validates the form settings.
BlockTranslationTestCase::setUp in core/modules/block/tests/block.translation.test
Sets up a Backdrop site for running functional and integration tests.
BlockTranslationTestCase::testTranslateCustomBlock in core/modules/block/tests/block.translation.test
Test creating custom block, translate it, and then deleting it.
block_admin_list in core/modules/block/block.admin.inc
Page callback; Display a list of all custom blocks.
block_update_1002 in core/modules/block/block.install
Remove the legacy block tables.
block_update_dependencies in core/modules/block/block.install
Implements hook_update_dependencies().
book_preprocess_block in core/modules/book/book.module
Implements hook_preprocess_block().
BootstrapGetFilenameTestCase::testBackdropGetFilename in core/modules/simpletest/tests/bootstrap.test
Test that backdrop_get_filename() works correctly when the file is not found in the database.
ckeditor5_ckeditor5_plugins in core/modules/ckeditor5/ckeditor5.module
Implements hook_ckeditor5_plugins().
CommentBlockFunctionalTest::setUp in core/modules/comment/tests/comment.test
Sets up a Backdrop site for running functional and integration tests.
comment_preprocess_block in core/modules/comment/comment.module
Implements hook_preprocess_block().
common_test_module_implements_alter in core/modules/simpletest/tests/common_test.module
Implements hook_module_implements_alter().
dashboard_preprocess_block in core/modules/dashboard/dashboard.module
Implements hook_preprocess_block().
drupal-7.language.database.php in core/modules/simpletest/tests/upgrade/drupal-7.language.database.php
Database additions for language tests. Used in upgrade.language.test.
FieldBlock::createPseudoInstance in core/modules/field/field.block.inc
Create a field instance and display that uses custom formatter settings.
FilterHooksTestCase::setUp in core/modules/filter/tests/filter.test
Sets up a Backdrop site for running functional and integration tests.
HttpResponseCodeLayoutAccess::form in core/modules/layout/plugins/access/http_response_code_layout_access.inc
Settings form for configuring this access item.
Layout::addBlock in core/modules/layout/includes/layout.class.inc
Add a block to a particular region.
Layout::__construct in core/modules/layout/includes/layout.class.inc
Constructor for a Layout class.
LayoutBlockTest::setUp in core/modules/layout/tests/layout.test
Sets up a Backdrop site for running functional and integration tests.
LayoutBlockTest::testCustomTextBlocks in core/modules/layout/tests/layout.test
Test Custom Text blocks.
LayoutBlockTest::testPageComponentBlocks in core/modules/layout/tests/layout.test
Test Page component blocks.
LayoutBlockTextTest::setUp in core/modules/layout/tests/layout.test
Sets up a Backdrop site for running functional and integration tests.
LayoutRendererStandard::ensurePageContentBlock in core/modules/layout/plugins/renderers/layout_renderer_standard.inc
Ensure that the page content block is included in the default region.
LayoutRendererStandard::renderBlock in core/modules/layout/plugins/renderers/layout_renderer_standard.inc
Render a block using its designated style.
LayoutUpgradePathTest::testLayoutUpgrade in core/modules/layout/tests/layout.test
Tests a successful upgrade, where block positions copied to layouts.
layout_autoload_info in core/modules/layout/layout.module
Implements hook_autoload_info().
layout_block_add_page in core/modules/layout/layout.admin.inc
Menu callback; Display a list of blocks to be added to a layout.
layout_block_configure_ajax_update in core/modules/layout/layout.admin.inc
AJAX callback to update the underlying layout form after updating a block.
layout_block_configure_form in core/modules/layout/layout.admin.inc
Form callback; Add or edit a block within a layout.
layout_block_configure_form_condition_add in core/modules/layout/layout.admin.inc
Submit handler for layout_block_configure_form() to add a condition.
layout_block_configure_form_condition_edit in core/modules/layout/layout.admin.inc
Submit handler for layout_block_configure_form() to edit a condition.
layout_block_configure_form_condition_remove in core/modules/layout/layout.admin.inc
Submit handler for layout_block_configure_form() to remove a condition.
layout_block_configure_form_submit in core/modules/layout/layout.admin.inc
Form submit handler for layout_block_configure_form().
layout_block_configure_form_validate in core/modules/layout/layout.admin.inc
Form validate handler for layout_block_configure_form().
layout_condition_add_form in core/modules/layout/layout.admin.inc
Form callback; Displays form for adding new conditions to a layout or block.
layout_condition_add_form_cancel in core/modules/layout/layout.admin.inc
Submit handler for the cancel button on layout_condition_add_form().
layout_condition_add_form_submit in core/modules/layout/layout.admin.inc
Submit handler for layout_condition_add_form().
layout_condition_return_form in core/modules/layout/layout.admin.inc
Helper function to return a partial condition settings form.
layout_content_form in core/modules/layout/layout.admin.inc
Form callback; Main form for editing a layout's content.
layout_entity_admin_add_form_submit in core/modules/layout/layout.entity.admin.inc
Submit handler for layout_entity_admin_add_form().
layout_get_handler_name in core/modules/layout/layout.module
Helper function to get a handler class name based on the plugin name.
layout_layout_presave in core/modules/layout/layout.module
Implements hook_layout_presave().
layout_layout_style_info in core/modules/layout/includes/layout.layout.inc
Implements hook_layout_style_info().
layout_tempstore_block_load in core/modules/layout/layout.module
Menu loader to load an individual block from a layout.
layout_theme in core/modules/layout/layout.module
Implements hook_theme()
layout_upgrade_database.php in core/modules/layout/tests/layout_upgrade_database.php
Database additions for Layout upgrade tests. Used in layout.test.
locale_preprocess_block in core/modules/locale/locale.module
Implements hook_preprocess_block().
menu_preprocess_block in core/modules/menu/menu.module
Implements hook_preprocess_block().
NodeBlockFunctionalTest::setUp in core/modules/node/tests/node.test
Sets up a Backdrop site for running functional and integration tests.
NodeBlockFunctionalTest::testRecentNodeBlock in core/modules/node/tests/node.test
Tests the recent content block.
NodeTranslateBlockFunctionalTest::setUp in core/modules/node/tests/node.test
Sets up a Backdrop site for running functional and integration tests.
node_update_1023 in core/modules/node/node.install
Create the view replacement for recent content block.
node_update_1023 in core/modules/node/node.install
Create the view replacement for recent content block.
search_form_layout_block_configure_form_alter in core/modules/search/search.module
Implements hook_form_FORM_ID_alter().
search_preprocess_block in core/modules/search/search.module
Implements hook_preprocess_block().
SystemBlockTestCase::setUp in core/modules/system/tests/system.test
Sets up a Backdrop site for running functional and integration tests.
SystemThemeFunctionalTest::setUp in core/modules/system/tests/system.test
Sets up a Backdrop site for running functional and integration tests.
system_preprocess_block in core/modules/system/system.module
Implements hook_preprocess_block().
system_theme in core/modules/system/system.module
Implements hook_theme().
system_theme in core/modules/system/system.module
Implements hook_theme().
template_preprocess_block in core/modules/layout/layout.theme.inc
Prepares variables for block templates.
template_preprocess_block_dynamic in core/modules/layout/layout.theme.inc
Prepares variables for block-dynamic templates.
theme_admin_block in core/modules/system/system.theme.inc
Returns HTML for an administrative block for display.
theme_admin_page in core/modules/system/system.theme.inc
Returns HTML for an administrative page.
theme_system_admin_index in core/modules/system/system.theme.inc
Returns HTML for the output of the dashboard page.
UpdateCoreTestCase::testDatestampMismatch in core/modules/update/tests/update.test
Ensures proper results where there are date mismatches among modules.
UpgradePathTestCase::uninstallModulesExcept in core/modules/simpletest/tests/upgrade/upgrade.test
Force uninstall all modules from a test database, except those listed.
user_preprocess_block in core/modules/user/user.module
Implements hook_preprocess_block().
ViewsBlock::prepare in core/modules/views/includes/views.block.inc
Do any processing prior to getTitle() and getContent() being called.
ViewsLayoutsTest::setup in core/modules/views/tests/views_layout.test
Function that handles the set-up of this test.
ViewsLayoutsTest::testViewsLayouts in core/modules/views/tests/views_layout.test
Tests that a contextual filter input can be passed in from a layout.
ViewsPluginDisplayBlockTestCase::testViewBlocks in core/modules/views/tests/plugins/views_plugin_display_block.test
Tests, whether and how the reset button can be renamed.
ViewsUiBaseViewsWizard::add_displays in core/modules/views_ui/wizards/views_ui_base_views_wizard.php
Add the array of display options to the view, with appropriate overrides.
ViewsUiBaseViewsWizard::add_displays in core/modules/views_ui/wizards/views_ui_base_views_wizard.php
Add the array of display options to the view, with appropriate overrides.
ViewsUiBaseViewsWizard::block_display_options in core/modules/views_ui/wizards/views_ui_base_views_wizard.php
ViewsUiBaseViewsWizard::build_display_options in core/modules/views_ui/wizards/views_ui_base_views_wizard.php
Build an array of display options for the view.
ViewsUiBaseViewsWizard::build_form in core/modules/views_ui/wizards/views_ui_base_views_wizard.php
For AJAX callbacks to build other elements in the "show" form.
ViewsUiBaseViewsWizard::build_form_style in core/modules/views_ui/wizards/views_ui_base_views_wizard.php
Build the part of the form that builds the display format options.
ViewsUiCommentViewsWizard::block_display_options in core/modules/views_ui/wizards/views_ui_comment_views_wizard.php
ViewsUiNodeViewsWizard::block_display_options in core/modules/views_ui/wizards/views_ui_node_views_wizard.php
ViewsUIWizardDisplaysTestCase::testReorderDisplays in core/modules/views/tests/views_ui.test
Test reordering of displays.
views_plugin_display_block::options_summary in core/modules/views/plugins/views_plugin_display_block.inc
Provide the summary for page options in the views UI.
views_ui_admin_settings_basic in core/modules/views_ui/views_ui.admin.inc
Form builder for the admin display defaults page.
views_ui_admin_settings_basic in core/modules/views_ui/views_ui.admin.inc
Form builder for the admin display defaults page.
views_views_plugins in core/modules/views/includes/views.views.inc
Implements hook_views_plugins().
views_views_plugins in core/modules/views/includes/views.views.inc
Implements hook_views_plugins().