chore: publish from main

extensions/flight-map-canvas/game/hostBridge.js

@@ -0,0 +1,73 @@
+/************************************************************************
+ * HostBridge - Thin abstraction over the VS Code webview messaging API. *
+ *                                                                       *
+ * The simulator runs in two places: inside a VS Code webview panel and  *
+ * as a plain page in a browser. Everything that needs the extension     *
+ * host (config injection, saving renderMap.json) goes through here so   *
+ * the rest of the code stays identical in both environments.            *
+ *                                                                       *
+ * In the browser the API is absent and every call degrades to a no-op,  *
+ * leaving the original web behavior in place.                           *
+ ***********************************************************************/
+var HostBridge = (function () {
+
+    var api = null;
+    var handlers = {};
+
+    // acquireVsCodeApi exists only inside a webview, and may be called
+    // exactly once per page load
+    if (typeof acquireVsCodeApi === 'function') {
+        try {
+            api = acquireVsCodeApi();
+        } catch (e) {
+            api = null;
+        }
+    }
+
+    if (api) {
+        window.addEventListener('message', function (event) {
+            var message = event.data;
+            if (!message || !message.command) return;
+            var fn = handlers[message.command];
+            if (fn) fn(message);
+        });
+    }
+
+    /**
+     * True when running inside the VS Code webview panel.
+     */
+    function isHosted() {
+        return api !== null;
+    }
+
+    /**
+     * Send a message to the extension host. No-op in the browser.
+     */
+    function post(message) {
+        if (api) api.postMessage(message);
+    }
+
+    /**
+     * Register a handler for a command sent by the extension host.
+     */
+    function on(command, fn) {
+        handlers[command] = fn;
+    }
+
+    /**
+     * Render configuration injected by the extension host, or null when
+     * running as a standalone page.
+     */
+    function getInjectedConfig() {
+        return (window.__flightMapConfig && typeof window.__flightMapConfig === 'object')
+            ? window.__flightMapConfig
+            : null;
+    }
+
+    return {
+        isHosted: isHosted,
+        post: post,
+        on: on,
+        getInjectedConfig: getInjectedConfig
+    };
+})();