Initial commit

lib/components/data-grid/context.ts

@@ -0,0 +1,28 @@
+/**
+ * DataGrid Context
+ *
+ * Provides shared state to child components via Svelte context.
+ */
+
+import { getContext, setContext } from 'svelte';
+import type { DataGridContext } from './types';
+
+const DATA_GRID_CONTEXT_KEY = Symbol('data-grid');
+
+/**
+ * Set the DataGrid context (called by DataGrid.svelte)
+ */
+export function setDataGridContext<T>(ctx: DataGridContext<T>): void {
+	setContext(DATA_GRID_CONTEXT_KEY, ctx);
+}
+
+/**
+ * Get the DataGrid context (called by child components)
+ */
+export function getDataGridContext<T = unknown>(): DataGridContext<T> {
+	const ctx = getContext<DataGridContext<T>>(DATA_GRID_CONTEXT_KEY);
+	if (!ctx) {
+		throw new Error('DataGrid context not found. Ensure component is used within a DataGrid.');
+	}
+	return ctx;
+}