10 calls to system_region_list() in Drupal 9

Block::preSave in core/modules/block/src/Entity/Block.php

Acts on an entity before the presave hook is invoked.

BlockController::getVisibleRegionNames in core/modules/block/src/Controller/BlockController.php

Returns the human-readable list of regions keyed by machine name.

BlockDeleteForm::systemRegionList in core/modules/block/src/Form/BlockDeleteForm.php

Wraps system_region_list().

BlockForm::form in core/modules/block/src/BlockForm.php

Gets the actual form array to be built.

BlockForm::themeSwitch in core/modules/block/src/BlockForm.php

Handles switching the available regions based on the selected theme.

BlockListBuilder::systemRegionList in core/modules/block/src/BlockListBuilder.php

Wraps system_region_list().

block_rebuild in core/modules/block/block.module

Implements hook_rebuild().

block_theme_initialize in core/modules/block/block.module

Assigns an initial, default set of blocks for a theme.

system_default_region in core/modules/system/system.module

Gets the name of the default region for a given theme.

ThemeInstallerTest::testThemeInfoAlter in core/tests/Drupal/KernelTests/Core/Theme/ThemeInstallerTest.php

Tests that theme info can be altered by a module.