From 4e711d8f5dc3693f1764e8f9cb511a8d33944735 Mon Sep 17 00:00:00 2001
From: Mats Bosson <mats.bosson@gmail.com>
Date: Sun, 29 Mar 2026 05:32:45 +0700
Subject: [PATCH] Dialog types and context

---
 .../src/components/dialog/dialog-context.ts   | 71 +++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 packages/core/src/components/dialog/dialog-context.ts

diff --git a/packages/core/src/components/dialog/dialog-context.ts b/packages/core/src/components/dialog/dialog-context.ts
new file mode 100644
index 0000000..062979c
--- /dev/null
+++ b/packages/core/src/components/dialog/dialog-context.ts
@@ -0,0 +1,71 @@
+// packages/core/src/components/dialog/dialog-context.ts
+import type { Accessor } from "solid-js";
+import { createContext, useContext } from "solid-js";
+
+// ─── Internal Context (used only by Dialog parts) ──────────────────────────
+
+export interface InternalDialogContextValue {
+  isOpen: Accessor<boolean>;
+  setOpen: (open: boolean) => void;
+  modal: Accessor<boolean>;
+  /** SSR-safe ID for Dialog.Content element */
+  contentId: Accessor<string>;
+  /** Registered ID from Dialog.Title — used for aria-labelledby */
+  titleId: Accessor<string | undefined>;
+  setTitleId: (id: string | undefined) => void;
+  /** Registered ID from Dialog.Description — used for aria-describedby */
+  descriptionId: Accessor<string | undefined>;
+  setDescriptionId: (id: string | undefined) => void;
+  /** Whether Dialog.Trigger has been explicitly rendered */
+  hasTrigger: Accessor<boolean>;
+  setHasTrigger: (has: boolean) => void;
+}
+
+const InternalDialogContext = createContext<InternalDialogContextValue>();
+
+/**
+ * Returns the internal Dialog context value.
+ * Throws if used outside of a Dialog root.
+ */
+export function useInternalDialogContext(): InternalDialogContextValue {
+  const ctx = useContext(InternalDialogContext);
+  if (!ctx) {
+    throw new Error(
+      "[PettyUI] Dialog parts must be used inside <Dialog>.\n" +
+        "  Fix: Wrap your Dialog.Content, Dialog.Trigger, etc. inside <Dialog>.\n" +
+        "  Docs: https://pettyui.dev/components/dialog#composition",
+    );
+  }
+  return ctx;
+}
+
+export const InternalDialogContextProvider = InternalDialogContext.Provider;
+
+// ─── Public Context (exported via Dialog.useContext) ───────────────────────
+
+export interface DialogContextValue {
+  /** Whether the dialog is currently open. */
+  open: Accessor<boolean>;
+  /** Whether the dialog renders as a modal (blocks outside interaction). */
+  modal: Accessor<boolean>;
+}
+
+const DialogContext = createContext<DialogContextValue>();
+
+/**
+ * Returns the public Dialog context value.
+ * Throws if used outside of a Dialog root.
+ */
+export function useDialogContext(): DialogContextValue {
+  const ctx = useContext(DialogContext);
+  if (!ctx) {
+    throw new Error(
+      "[PettyUI] Dialog.useContext() was called outside of a <Dialog>.\n" +
+        "  Fix: Call Dialog.useContext() inside a component rendered within <Dialog>.\n" +
+        "  Docs: https://pettyui.dev/components/dialog#context",
+    );
+  }
+  return ctx;
+}
+
+export const DialogContextProvider = DialogContext.Provider;