1 files changed, 40 insertions, 0 deletions
diff --git a/src/content/reducers/setting.ts b/src/content/reducers/setting.ts
new file mode 100644
index 0000000..9ca1380
--- /dev/null
+++ b/src/content/reducers/setting.ts
@@ -0,0 +1,40 @@
+import * as actions from '../actions';
+import * as keyUtils from '../../shared/utils/keys';
+import * as operations from '../../shared/operations';
+import { Search, Properties, DefaultSetting } from '../../shared/Settings';
+
+export interface State {
+  keymaps: { key: keyUtils.Key[], op: operations.Operation }[];
+  search: Search;
+  properties: Properties;
+}
+
+// defaultState does not refer due to the state is load from
+// background on load.
+const defaultState: State = {
+  keymaps: [],
+  search: DefaultSetting.search,
+  properties: DefaultSetting.properties,
+};
+
+export default function reducer(
+  state: State = defaultState,
+  action: actions.SettingAction,
+): State {
+  switch (action.type) {
+  case actions.SETTING_SET:
+    return {
+      keymaps: Object.entries(action.settings.keymaps).map((entry) => {
+        return {
+          key: keyUtils.fromMapKeys(entry[0]),
+          op: entry[1],
+        };
+      }),
+      properties: action.settings.properties,
+      search: action.settings.search,
+    };
+  default:
+    return state;
+  }
+}
+