date_field_widget_info in core/modules/date/date.field.inc

Implements hook_field_widget_info().

field_behaviors_widget in core/modules/field/field.info.inc

Determines the behavior of a widget with respect to an operation.

field_default_form in core/modules/field/field.form.inc

Creates a form element for a field and can populate it with a default value.

field_default_form_errors in core/modules/field/field.form.inc

Transfer field-level validation errors to widgets.

field_ui_field_edit_form in core/modules/field_ui/field_ui.admin.inc

Form constructor for the field instance settings form.

hook_field_widget_info in core/modules/field/field.api.php

Expose Field API widget types.

link_field_formatter_info in core/modules/link/link.module

Implements hook_field_formatter_info().

link_field_widget_info in core/modules/link/link.module

Implements hook_field_widget_info().

_field_info_prepare_instance in core/modules/field/field.info.inc

Prepares an instance definition for the current run-time context.