7 methods override FilterPluginBase::valueForm()

BooleanOperator::valueForm in drupal/core/modules/views/lib/Drupal/views/Plugin/views/filter/BooleanOperator.php
Options form subform for setting options.
Equality::valueForm in drupal/core/modules/views/lib/Drupal/views/Plugin/views/filter/Equality.php
Provide a simple textfield for equality
HistoryUserTimestamp::valueForm in drupal/core/modules/history/lib/Drupal/history/Plugin/views/filter/HistoryUserTimestamp.php
Options form subform for setting options.
InOperator::valueForm in drupal/core/modules/views/lib/Drupal/views/Plugin/views/filter/InOperator.php
Options form subform for setting options.
Numeric::valueForm in drupal/core/modules/views/lib/Drupal/views/Plugin/views/filter/Numeric.php
Provide a simple textfield for equality
Search::valueForm in drupal/core/modules/search/lib/Drupal/search/Plugin/views/filter/Search.php
Provide a simple textfield for equality
String::valueForm in drupal/core/modules/views/lib/Drupal/views/Plugin/views/filter/String.php
Provide a simple textfield for equality