Built-in Elements

Element	Purpose
mlf-form	Main primitive form host.
mlf-form-errors	Form-level errors.
mlf-submit-button	Submit control.
mlf-unsupported-component	Fallback for missing primitive mappings.
mlf-field-frame	Field wrapper with label, description, and errors.
mlf-report-frame	Report wrapper with accessible lifecycle states.
mlf-text-field	Text field renderer.
mlf-number-field	Number field renderer.
mlf-boolean-field	Boolean field renderer.
mlf-category-field	Category field renderer.
mlf-date-field	Date field renderer.
mlf-series-field	Series field renderer.
mlf-classifier-report	Classifier report renderer.
mlf-regressor-report	Regressor report renderer.

Custom renderers should use valid custom element names with a hyphen.

mlf-form summarizes a report collection while every report is idle or loading. Once reports settle independently, each mlf-report-frame displays its skipped or error state, or mounts the registered renderer for ready content. Override reportsEmptyTitle, reportsEmptyBody, reportStateTitle, and reportStateMessage through primitive text when the host needs different copy. Report descriptions are collapsed by default and exposed through the frame’s help button; set ui.showDescriptionInline to true when a report description should start expanded.