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-rw-r--r--devtools/client/memory/reducers/tree-map-display.js19
1 files changed, 19 insertions, 0 deletions
diff --git a/devtools/client/memory/reducers/tree-map-display.js b/devtools/client/memory/reducers/tree-map-display.js
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+++ b/devtools/client/memory/reducers/tree-map-display.js
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+/* 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 { actions, treeMapDisplays } = require("../constants");
+const DEFAULT_TREE_MAP_DISPLAY = treeMapDisplays.coarseType;
+
+const handlers = Object.create(null);
+
+handlers[actions.SET_TREE_MAP_DISPLAY] = function (_, { display }) {
+ return display;
+};
+
+module.exports = function (state = DEFAULT_TREE_MAP_DISPLAY, action) {
+ const handler = handlers[action.type];
+ return handler ? handler(state, action) : state;
+};