Keymaps are now updated without restarting (#2455)

* Reload keymaps without restarting

* Reattach key listeners when config have changed

lib/actions/config.js

@@ -8,8 +8,10 @@ export function loadConfig(config) {
 }
 
 export function reloadConfig(config) {
+  const now = Date.now();
   return {
     type: CONFIG_RELOAD,
-    config
+    config,
+    now
   };
 }

lib/containers/hyper.js

@@ -20,6 +20,9 @@ class Hyper extends PureComponent {
     this.handleFocusActive = this.handleFocusActive.bind(this);
     this.onTermsRef = this.onTermsRef.bind(this);
     this.mousetrap = null;
+    this.state = {
+      lastConfigUpdate: 0
+    };
   }
 
   componentWillReceiveProps(next) {
@@ -28,6 +31,11 @@ class Hyper extends PureComponent {
       // starts working again
       document.body.style.backgroundColor = next.backgroundColor;
     }
+    const {lastConfigUpdate} = next;
+    if (lastConfigUpdate && lastConfigUpdate !== this.state.lastConfigUpdate) {
+      this.setState({lastConfigUpdate});
+      this.attachKeyListeners();
+    }
   }
 
   handleFocusActive() {
@@ -132,7 +140,8 @@ const HyperContainer = connect(
       borderColor: state.ui.borderColor,
       activeSession: state.sessions.activeUid,
       backgroundColor: state.ui.backgroundColor,
-      maximized: state.ui.maximized
+      maximized: state.ui.maximized,
+      lastConfigUpdate: state.ui._lastUpdate
     };
   },
   dispatch => {

lib/reducers/ui.js

@@ -103,7 +103,7 @@ const reducer = (state = initial, action) => {
     case CONFIG_LOAD:
     // eslint-disable-next-line no-case-declarations, no-fallthrough
     case CONFIG_RELOAD:
-      const {config} = action;
+      const {config, now} = action;
       state_ = state
         // unset the user font size override if the
         // font size changed from the config
@@ -205,6 +205,8 @@ const reducer = (state = initial, action) => {
               ret.quickEdit = config.quickEdit;
             }
 
+            ret._lastUpdate = now;
+
             return ret;
           })()
         );