key input sequence as action/reducer

src/reducers/input.js

@@ -0,0 +1,23 @@
+import actions from '../actions';
+
+const defaultState = {
+  keys: [],
+};
+
+export default function reducer(state = defaultState, action = {}) {
+  switch (action.type) {
+  case actions.INPUT_KEY_PRESS:
+    return Object.assign({}, state, {
+      keys: state.keys.concat([{
+        code: action.code,
+        ctrl: action.ctrl
+      }])
+    });
+  case actions.INPUT_CLEAR_KEYS:
+    return Object.assign({}, state, {
+      keys: [],
+    });
+  default:
+    return state;
+  }
+}