Implements Task 5 of the LayoutDesc Importer (Plan 1 — vitals conformance).
Pure layer (BuildFromInfos / Build):
- ImportedLayout result type: UiElement root + O(1) FindElement(uint id) lookup
- BuildWidget dispatches via DatWidgetFactory.Create; skips Type-12 prototypes (null)
- Meters consume their children (DatWidgetFactory already extracted slice ids —
adding the dat children as UiElement nodes would duplicate geometry)
- All other element types recurse children generically via AddChild
Dat shell (Import):
- Loads LayoutDesc from dats; null-safe if layout is absent
- Resolves each top-level ElementDesc to ElementInfo via Resolve():
BaseElement/BaseLayoutId chain with (layoutId,elementId) cycle guard
- ToInfo(): reads ElementDesc scalar fields (uint → float cast) + DirectState +
named States (UIStateId.ToString() as key)
- ReadState(): extracts first MediaDescImage (File + DrawMode) per state +
font DID from Properties[0x1A] → ArrayBaseProperty → DataIdBaseProperty.Value
- Each sibling element gets a fresh base-chain set (siblings don't share guards)
DRW API: all members confirmed from VitalsLayoutDump.cs usings — no
adjustments needed: LayoutDesc in DBObjs; ElementDesc/StateDesc/MediaDescImage/
ArrayBaseProperty/DataIdBaseProperty in Types; DrawModeType/UIStateId in Enums.
Tests (3/3 green):
- BuildFromInfos_HealthMeter_IsUiMeterAtRect — Type-7 child → UiMeter, Left=5, Width=150
- BuildFromInfos_Type12Child_IsSkipped_Type3Present — prototype absent, container present
- BuildFromInfos_MeterWithChildren_MeterPresent_ChildrenNotInTree — meter findable,
both dat-children absent, UiMeter.Children empty
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
