Cascading dropdowns and a table preview

This SDK-only example reproduces a Make → Model → Tune workflow using synthetic data. Selecting a make populates models, selecting a model populates tunes, and selecting a tune displays a 2 × 12 preview table. Changing an upstream selection clears dependent selections and the preview in one atomic patch. It never accesses an ECU or copies a customer's plugin/database.

Requires host 0.8.3 or later. Build with CMake/Ninja like the starter tutorial, substituting this example's directory. Load its generated plugin.json and open Examples/Cascading selections. The module is cascading-selects.dll or cascading-selects.so.

See plugin.cpp for explicit ET_UI_EVENT_SELECTED / F64 events, Ui::selectedIndex, empty options, completion diagnostics, and refreshing a plugin-owned table through ET_UI_VALUE rather than stale initial ET_UI_DATA.

Successive patches and autoselect

Each selection deliberately sends a status patch before the dropdown/preview patch, using the same event revision. Host 0.8.3 applies these in order. Selecting Yamaha demonstrates automatic selection of a single model and tune, including an immediate preview without requiring extra clicks. Programmatic selection does not emit user-input events.