rezi-modal-dialogs

Development

Add modal dialogs and overlay UI with focus trapping. Use when implementing confirmations, alerts, or layered interfaces.

QUICK START

How to use this skill

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Source SKILL.md: https://github.com/RtlZeroMemory/Rezi/blob/HEAD/.claude/skills/rezi-modal-dialogs/SKILL.md

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When to use

Use this skill when:

Adding confirmation dialogs, alerts, or prompts
Building layered/overlay UI
Need focus trapping within a dialog

Source of truth

packages/core/src/widgets/useModalStack.ts — useModalStack() hook
packages/core/src/widgets/types.ts — ModalProps, LayersProps
packages/core/src/widgets/ui.ts — ui.modal(), ui.layers()
packages/core/src/ui/recipes.ts — recipe.modal() and recipe.surface() for design-system-consistent modal styling

Steps

Option A: useModalStack (recommended for multiple modals)

Use useModalStack() inside a defineWidget:

const modals = useModalStack(ctx);

// Push a modal
modals.push("confirm", {
  title: "Confirm",
  content: body,
  onClose: () => modals.pop(),
});

// Include in view
return ui.layers([mainContent, ...modals.render()]);

Option B: ui.modal (simple single modal)

Use ui.modal() directly with a state-controlled flag:

return ui.layers([
  mainContent,
  ...(state.showModal
    ? [
        ui.modal({
          id: "confirm-modal",
          title: "Confirm",
          initialFocus: "confirm-ok",
          returnFocusTo: "open-confirm",
          onClose: () => app.update((s) => ({ ...s, showModal: false })),
          content: ui.text("Are you sure?"),
          actions: [
            ui.button({
              id: "confirm-cancel",
              label: "Cancel",
              intent: "secondary",
              onPress: () => app.update((s) => ({ ...s, showModal: false })),
            }),
            ui.button({
              id: "confirm-ok",
              label: "OK",
              intent: "primary",
              onPress: () => app.update((s) => ({ ...s, showModal: false })),
            }),
          ],
        }),
      ]
    : []),
]);

Overlay ordering note:
- Modal, dropdown, and toast overlays share unified z-ordering through the LayerRegistry.
- Prefer ui.layers([...]) as the common overlay composition root.
Dialog action intent note:
- Use intent to communicate action semantics in modal/dialog button rows.
- Recommended mapping: confirm/continue -> primary, cancel/back -> secondary, destructive -> danger, positive approval -> success, cautionary acknowledgment -> warning.

Verification

Modal opens and closes correctly
Focus traps within the modal (Tab doesn't escape)
Focus returns to previous element on close