Allow setting in electron whether or not to auto hide menu bar

src/BasePlatform.js

@@ -128,6 +128,18 @@ export default class BasePlatform {
         throw new Error("Unimplemented");
     }
 
+    supportsAutoHideMenuBar(): boolean {
+        return false;
+    }
+
+    async getAutoHideMenuBarEnabled(): boolean {
+        return false;
+    }
+
+    async setAutoHideMenuBarEnabled(enabled: boolean): void {
+        throw new Error("Unimplemented");
+    }
+
     supportsMinimizeToTray(): boolean {
         return false;
     }

src/components/views/settings/tabs/user/PreferencesUserSettingsTab.js

@@ -64,6 +64,8 @@ export default class PreferencesUserSettingsTab extends React.Component {
         this.state = {
             autoLaunch: false,
             autoLaunchSupported: false,
+            alwaysShowMenuBar: true,
+            alwaysShowMenuBarSupported: false,
             minimizeToTray: true,
             minimizeToTraySupported: false,
             autocompleteDelay: SettingsStore.getValueAt(SettingLevel.DEVICE, 'autocompleteDelay').toString(10),
@@ -80,20 +82,38 @@ export default class PreferencesUserSettingsTab extends React.Component {
             autoLaunch = await platform.getAutoLaunchEnabled();
         }
 
+        const alwaysShowMenuBarSupported = await platform.supportsAutoHideMenuBar();
+        let alwaysShowMenuBar = true;
+
+        if (alwaysShowMenuBarSupported) {
+            alwaysShowMenuBar = !await platform.getAutoHideMenuBarEnabled();
+        }
+
         const minimizeToTraySupported = await platform.supportsMinimizeToTray();
         let minimizeToTray = true;
 
         if (minimizeToTraySupported) {
             minimizeToTray = await platform.getMinimizeToTrayEnabled();
         }
 
-        this.setState({autoLaunch, autoLaunchSupported, minimizeToTraySupported, minimizeToTray});
+        this.setState({
+            autoLaunch,
+            autoLaunchSupported,
+            alwaysShowMenuBarSupported,
+            alwaysShowMenuBar,
+            minimizeToTraySupported,
+            minimizeToTray,
+        });
     }
 
     _onAutoLaunchChange = (checked) => {
         PlatformPeg.get().setAutoLaunchEnabled(checked).then(() => this.setState({autoLaunch: checked}));
     };
 
+    _onAlwaysShowMenuBarChange = (checked) => {
+        PlatformPeg.get().setAutoHideMenuBarEnabled(!checked).then(() => this.setState({alwaysShowMenuBar: checked}));
+    };
+
     _onMinimizeToTrayChange = (checked) => {
         PlatformPeg.get().setMinimizeToTrayEnabled(checked).then(() => this.setState({minimizeToTray: checked}));
     };
@@ -116,6 +136,13 @@ export default class PreferencesUserSettingsTab extends React.Component {
                                                      label={_t('Start automatically after system login')} />;
         }
 
+        let autoHideMenuOption = null;
+        if (this.state.alwaysShowMenuBarSupported) {
+            autoHideMenuOption = <LabelledToggleSwitch value={this.state.alwaysShowMenuBar}
+                                                       onChange={this._onAlwaysShowMenuBarChange}
+                                                       label={_t('Always show the window menu bar')} />;
+        }
+
         let minimizeToTrayOption = null;
         if (this.state.minimizeToTraySupported) {
             minimizeToTrayOption = <LabelledToggleSwitch value={this.state.minimizeToTray}
@@ -139,6 +166,7 @@ export default class PreferencesUserSettingsTab extends React.Component {
                     <span className="mx_SettingsTab_subheading">{_t("Advanced")}</span>
                     {this._renderGroup(PreferencesUserSettingsTab.ADVANCED_SETTINGS)}
                     {minimizeToTrayOption}
+                    {autoHideMenuOption}
                     {autoLaunchOption}
                     <Field id={"autocompleteDelay"} label={_t('Autocomplete delay (ms)')} type='number'
                            value={this.state.autocompleteDelay}

src/i18n/strings/en_EN.json

@@ -591,6 +591,7 @@
     "Labs": "Labs",
     "Notifications": "Notifications",
     "Start automatically after system login": "Start automatically after system login",
+    "Always show the window menu bar": "Always show the window menu bar",
     "Close button should minimize window to tray": "Close button should minimize window to tray",
     "Preferences": "Preferences",
     "Composer": "Composer",