feat: add mouse navigation

Simple support for back/forward mouse buttons. Need to test on Mac and Linux.

src/main/createWindow.js

@@ -73,6 +73,17 @@ export default appState => {
 
   setupBarMenu();
 
+  window.on('app-command', function(e, cmd) {
+    switch (cmd) {
+      case 'browser-backward':
+        window.webContents.send('navigate-backward', null);
+        return;
+      case 'browser-forward':
+        window.webContents.send('navigate-forward', null);
+        return;
+    }
+  });
+
   window.on('close', event => {
     if (!appState.isQuitting && !appState.autoUpdateAccepted) {
       event.preventDefault();

src/renderer/index.js

@@ -18,7 +18,7 @@ import {
   doHideModal,
 } from 'redux/actions/app';
 import { doToast, doBlackListedOutpointsSubscribe, isURIValid, setSearchApi } from 'lbry-redux';
-import { doNavigate } from 'redux/actions/navigation';
+import { doNavigate, doHistoryBack, doHistoryForward } from 'redux/actions/navigation';
 import { doDownloadLanguages, doUpdateIsNightAsync } from 'redux/actions/settings';
 import { doAuthenticate, Lbryio, rewards } from 'lbryinc';
 import 'scss/all.scss';
@@ -41,6 +41,14 @@ if (process.env.SEARCH_API_URL) {
   setSearchApi(process.env.SEARCH_API_URL);
 }
 
+ipcRenderer.on('navigate-backward', () => {
+  app.store.dispatch(doHistoryBack());
+});
+
+ipcRenderer.on('navigate-forward', () => {
+  app.store.dispatch(doHistoryForward());
+});
+
 // We need to override Lbryio for getting/setting the authToken
 // We interect with ipcRenderer to get the auth key from a users keyring
 // We keep a local variable for authToken beacuse `ipcRenderer.send` does not