1 files changed, 48 insertions, 0 deletions
diff --git a/devtools/client/netmonitor/src/reducers/sort.js b/devtools/client/netmonitor/src/reducers/sort.js
new file mode 100644
index 0000000000..0d3486f57b
--- /dev/null
+++ b/devtools/client/netmonitor/src/reducers/sort.js
@@ -0,0 +1,48 @@
+/* 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 {
+  SORT_BY,
+  RESET_COLUMNS,
+} = require("resource://devtools/client/netmonitor/src/constants.js");
+
+function Sort() {
+  return {
+    // null means: sort by "waterfall", but don't highlight the table header
+    type: null,
+    ascending: true,
+  };
+}
+
+function sortReducer(state = new Sort(), action) {
+  switch (action.type) {
+    case SORT_BY: {
+      state = { ...state };
+      if (action.sortType != null && action.sortType == state.type) {
+        state.ascending = !state.ascending;
+      } else {
+        state.type = action.sortType;
+        state.ascending = true;
+      }
+      return state;
+    }
+
+    case RESET_COLUMNS: {
+      state = { ...state };
+      state.type = null;
+      state.ascending = true;
+      return state;
+    }
+
+    default:
+      return state;
+  }
+}
+
+module.exports = {
+  Sort,
+  sortReducer,
+};