1 files changed, 44 insertions, 0 deletions
diff --git a/devtools/client/memory/actions/refresh.js b/devtools/client/memory/actions/refresh.js
new file mode 100644
index 000000000..801a4f867
--- /dev/null
+++ b/devtools/client/memory/actions/refresh.js
@@ -0,0 +1,44 @@
+/* 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/. */
+"use strict";
+
+const { assert } = require("devtools/shared/DevToolsUtils");
+const { viewState } = require("../constants");
+const { refreshDiffing } = require("./diffing");
+const snapshot = require("./snapshot");
+
+/**
+ * Refresh the main thread's data from the heap analyses worker, if needed.
+ *
+ * @param {HeapAnalysesWorker} heapWorker
+ */
+exports.refresh = function (heapWorker) {
+  return function* (dispatch, getState) {
+    switch (getState().view.state) {
+      case viewState.DIFFING:
+        assert(getState().diffing, "Should have diffing state if in diffing view");
+        yield dispatch(refreshDiffing(heapWorker));
+        return;
+
+      case viewState.CENSUS:
+        yield dispatch(snapshot.refreshSelectedCensus(heapWorker));
+        return;
+
+      case viewState.DOMINATOR_TREE:
+        yield dispatch(snapshot.refreshSelectedDominatorTree(heapWorker));
+        return;
+
+      case viewState.TREE_MAP:
+        yield dispatch(snapshot.refreshSelectedTreeMap(heapWorker));
+        return;
+
+      case viewState.INDIVIDUALS:
+        yield dispatch(snapshot.refreshIndividuals(heapWorker));
+        return;
+
+      default:
+        assert(false, `Unexpected view state: ${getState().view.state}`);
+    }
+  };
+};