1 files changed, 124 insertions, 0 deletions
diff --git a/devtools/client/responsive/reducers/devices.js b/devtools/client/responsive/reducers/devices.js
new file mode 100644
index 0000000000..29e5777550
--- /dev/null
+++ b/devtools/client/responsive/reducers/devices.js
@@ -0,0 +1,124 @@
+/* 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 {
+  ADD_DEVICE,
+  ADD_DEVICE_TYPE,
+  EDIT_DEVICE,
+  LOAD_DEVICE_LIST_START,
+  LOAD_DEVICE_LIST_ERROR,
+  LOAD_DEVICE_LIST_END,
+  REMOVE_DEVICE,
+  UPDATE_DEVICE_DISPLAYED,
+  UPDATE_DEVICE_MODAL,
+} = require("devtools/client/responsive/actions/index");
+
+const Types = require("devtools/client/responsive/types");
+
+const INITIAL_DEVICES = {
+  isModalOpen: false,
+  listState: Types.loadableState.INITIALIZED,
+  modalOpenedFromViewport: null,
+  types: [],
+};
+
+const reducers = {
+  [ADD_DEVICE](devices, { device, deviceType }) {
+    return {
+      ...devices,
+      [deviceType]: [...devices[deviceType], device],
+    };
+  },
+
+  [ADD_DEVICE_TYPE](devices, { deviceType }) {
+    return {
+      ...devices,
+      types: [...devices.types, deviceType],
+      [deviceType]: [],
+    };
+  },
+
+  [EDIT_DEVICE](devices, { oldDevice, newDevice, deviceType }) {
+    const index = devices[deviceType].indexOf(oldDevice);
+    if (index < 0) {
+      return devices;
+    }
+
+    devices[deviceType].splice(index, 1, newDevice);
+
+    return {
+      ...devices,
+      [deviceType]: [...devices[deviceType]],
+    };
+  },
+
+  [UPDATE_DEVICE_DISPLAYED](devices, { device, deviceType, displayed }) {
+    const newDevices = devices[deviceType].map(d => {
+      if (d == device) {
+        d.displayed = displayed;
+      }
+
+      return d;
+    });
+
+    return {
+      ...devices,
+      [deviceType]: newDevices,
+    };
+  },
+
+  [LOAD_DEVICE_LIST_START](devices, action) {
+    return {
+      ...devices,
+      listState: Types.loadableState.LOADING,
+    };
+  },
+
+  [LOAD_DEVICE_LIST_ERROR](devices, action) {
+    return {
+      ...devices,
+      listState: Types.loadableState.ERROR,
+    };
+  },
+
+  [LOAD_DEVICE_LIST_END](devices, action) {
+    return {
+      ...devices,
+      listState: Types.loadableState.LOADED,
+    };
+  },
+
+  [REMOVE_DEVICE](devices, { device, deviceType }) {
+    const index = devices[deviceType].indexOf(device);
+    if (index < 0) {
+      return devices;
+    }
+
+    const list = [...devices[deviceType]];
+    list.splice(index, 1);
+
+    return {
+      ...devices,
+      [deviceType]: list,
+    };
+  },
+
+  [UPDATE_DEVICE_MODAL](devices, { isOpen, modalOpenedFromViewport }) {
+    return {
+      ...devices,
+      isModalOpen: isOpen,
+      modalOpenedFromViewport,
+    };
+  },
+};
+
+module.exports = function(devices = INITIAL_DEVICES, action) {
+  const reducer = reducers[action.type];
+  if (!reducer) {
+    return devices;
+  }
+  return reducer(devices, action);
+};