1 files changed, 61 insertions, 0 deletions
diff --git a/devtools/client/debugger/src/actions/navigation.js b/devtools/client/debugger/src/actions/navigation.js
new file mode 100644
index 0000000000..03d06a2baa
--- /dev/null
+++ b/devtools/client/debugger/src/actions/navigation.js
@@ -0,0 +1,61 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
+
+import { clearDocuments } from "../utils/editor";
+import sourceQueue from "../utils/source-queue";
+
+import { clearWasmStates } from "../utils/wasm";
+import { getMainThread, getThreadContext } from "../selectors";
+import { evaluateExpressions } from "../actions/expressions";
+
+/**
+ * Redux actions for the navigation state
+ * @module actions/navigation
+ */
+
+/**
+ * @memberof actions/navigation
+ * @static
+ */
+export function willNavigate(event) {
+  return async function ({
+    dispatch,
+    getState,
+    client,
+    sourceMapLoader,
+    parserWorker,
+  }) {
+    sourceQueue.clear();
+    sourceMapLoader.clearSourceMaps();
+    clearWasmStates();
+    clearDocuments();
+    parserWorker.clear();
+    const thread = getMainThread(getState());
+
+    dispatch({
+      type: "NAVIGATE",
+      mainThread: { ...thread, url: event.url },
+    });
+  };
+}
+
+/**
+ * @memberof actions/navigation
+ * @static
+ */
+export function navigated() {
+  return async function ({ getState, dispatch, panel }) {
+    try {
+      // Update the watched expressions once the page is fully loaded
+      const threadcx = getThreadContext(getState());
+      await dispatch(evaluateExpressions(threadcx));
+    } catch (e) {
+      // This may throw if we resume during the page load.
+      // browser_dbg-debugger-buttons.js highlights this, especially on MacOS or when ran many times
+      console.error("Failed to update expression on navigation", e);
+    }
+
+    panel.emit("reloaded");
+  };
+}