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InventoryWindow

Vanilla game class rendering the inventory window for a held multi-slot item (tablet, lenses). Instantiates SlotDisplayButton widgets only once, at SetSlots time, based on each slot's IsInteractable at that instant.

Widget staleness

Source: F0121.

InventoryWindow.SetSlots only instantiates SlotDisplayButton widgets for slots where IsInteractable == true at the time it runs. Later changes to IsInteractable do not create or remove widgets. Must force HandleOccupantChange after any slot state change for the widget list to match.

When the window is closed (GameObject inactive), FindObjectsOfType<InventoryWindow>() skips it, so rebuilds during close are silently lost. WindowOpenRefreshPatch catches the re-open and forces a rebuild.

ToggleVisibility stale widgets comment (F0343)

Source comment from WindowOpenRefreshPatch.cs:10-30:

/// <summary>
/// InventoryWindow.ToggleVisibility only flips the canvas on/off; it does
/// not re-run HandleOccupantChange or SetSlots. Widgets the user sees are
/// whatever SetSlots built during the last Assign (when the lens/tablet
/// first went into its parent slot) or the last time the parent slot's
/// OnOccupantChange fired.
///
/// While the window is closed, our OnChildEnterInventory Postfix does
/// normalise dynamic-slot state, but its <c>RebuildInventoryWindowFor</c>
/// uses <c>FindObjectsOfType&lt;InventoryWindow&gt;()</c> which skips
/// inactive GameObjects, so a closed window never receives the rebuild.
/// When the user later opens the window it shows the stale widget set:
/// if FixingTheControls "Clear Hands" filled two chip slots while closed,
/// the user sees one slot less than the number of chips present.
///
/// Hook ToggleVisibility as a Postfix so that the moment the window
/// becomes visible, we normalise slot state and force a full
/// HandleOccupantChange to rebuild the widget list against the
/// current slots. HandleOccupantChange is private; reached via
/// AccessTools reflection.
/// </summary>

Verification history

  • 2026-04-20: page created from the Research migration; verbatim content lifted from F0121, F0343. No conflicts.

Open questions

None at creation.