Implement group item

atom/browser/native_window_mac.mm

@@ -395,6 +395,8 @@ bool ScopedDisableResize::disable_resize_ = false;
         [idents addObject:[NSString stringWithFormat:@"%@%@", SliderIdentifier, [NSString stringWithUTF8String:item_id.c_str()]]];
       } else if (type == "popover") {
         [idents addObject:[NSString stringWithFormat:@"%@%@", PopOverIdentifier, [NSString stringWithUTF8String:item_id.c_str()]]];
+      } else if (type == "group") {
+        [idents addObject:[NSString stringWithFormat:@"%@%@", GroupIdentifier, [NSString stringWithUTF8String:item_id.c_str()]]];
       }
     }
   }
@@ -627,14 +629,43 @@ bool ScopedDisableResize::disable_resize_ = false;
   return popOverItem;
 }
 
+- (nullable NSTouchBarItem*) makeGroupForID:(NSString*)id withIdentifier:(NSString*)identifier {
+  std::string s_id = std::string([id UTF8String]);
+  if (![self hasTBDict:s_id]) return nil;
+  mate::PersistentDictionary item = item_id_map[s_id];
+
+  std::vector<mate::PersistentDictionary> items;
+  if (!item.Get("items", &items)) {
+    return nil;
+  }
+
+  NSMutableArray<NSTouchBarItem*>* generatedItems = [[NSMutableArray alloc] init];
+  NSMutableArray<NSString*>* identList = [self identifierArrayFromDicts:items];
+  for (NSUInteger i = 0; i < [identList count]; i++) {
+    NSTouchBarItem* generatedItem = [self makeItemForIdentifier:[identList objectAtIndex:i]];
+    if (generatedItem) {
+      [generatedItems addObject:generatedItem];
+    }
+  }
+  NSGroupTouchBarItem *groupItem = [NSGroupTouchBarItem groupItemWithIdentifier:identifier items:generatedItems];
+
+  std::string customizationLabel;
+  if (item.Get("customizationLabel", &customizationLabel)) {
+    groupItem.customizationLabel = [NSString stringWithUTF8String:customizationLabel.c_str()];
+  }
+
+  return groupItem;
+}
+
 static NSTouchBarItemIdentifier ButtonIdentifier = @"com.electron.tb.button.";
 static NSTouchBarItemIdentifier ColorPickerIdentifier = @"com.electron.tb.colorpicker.";
 // static NSTouchBarItemIdentifier ListIdentifier = @"com.electron.tb.list.";
+static NSTouchBarItemIdentifier GroupIdentifier = @"com.electron.tb.group.";
 static NSTouchBarItemIdentifier LabelIdentifier = @"com.electron.tb.label.";
 static NSTouchBarItemIdentifier PopOverIdentifier = @"com.electron.tb.popover.";
 static NSTouchBarItemIdentifier SliderIdentifier = @"com.electron.tb.slider.";
 
-- (nullable NSTouchBarItem *)touchBar:(NSTouchBar *)touchBar makeItemForIdentifier:(NSTouchBarItemIdentifier)identifier {
+- (nullable NSTouchBarItem *)makeItemForIdentifier:(NSTouchBarItemIdentifier)identifier {
   if ([identifier hasPrefix:ButtonIdentifier]) {
     NSString* id = [self idFromIdentifier:identifier withPrefix:ButtonIdentifier];
     return [self makeButtonForID:id withIdentifier:identifier];
@@ -650,11 +681,18 @@ static NSTouchBarItemIdentifier SliderIdentifier = @"com.electron.tb.slider.";
   } else if ([identifier hasPrefix:PopOverIdentifier]) {
     NSString* id = [self idFromIdentifier:identifier withPrefix:PopOverIdentifier];
     return [self makePopOverForID:id withIdentifier:identifier];
+  } else if ([identifier hasPrefix:GroupIdentifier]) {
+    NSString* id = [self idFromIdentifier:identifier withPrefix:GroupIdentifier];
+    return [self makeGroupForID:id withIdentifier:identifier];
   }
 
   return nil;
 }
 
+- (nullable NSTouchBarItem *)touchBar:(NSTouchBar *)touchBar makeItemForIdentifier:(NSTouchBarItemIdentifier)identifier {
+  return [self makeItemForIdentifier:identifier];
+}
+
 
 // NSWindow overrides.
 

default_app/default_app.js

@@ -48,11 +48,15 @@ exports.load = (appUrl) => {
         label: 'foo',
         showCloseButton: true,
         touchBar: new TouchBar([
-          new (TouchBar.Button)({
+          new (TouchBar.Group)({
-            label: 'Sub Button',
+            items: new TouchBar(
+              [1, 2, 3].map((i) => new (TouchBar.Button)({
+                label: `Button ${i}`,
                 click: () => {
-              console.log('Sub Button Clicked')
+                  console.log(`Button ${i} (group) Clicked`)
                 }
+              }))
+            )
           })
         ])
       }),

lib/browser/api/touch-bar.js

@@ -74,6 +74,20 @@ TouchBar.ColorPicker = class TouchBarColorPicker extends TouchBarItem {
   }
 }
 
+TouchBar.Group = class TouchBarGroup extends TouchBarItem {
+  constructor (config) {
+    super(config)
+    this.config.type = 'group'
+  }
+
+  toJSON () {
+    const config = this.config;
+    return Object.assign({}, config, {
+      items: config.items && config.items.toJSON ? config.items.toJSON() : []
+    })
+  }
+}
+
 TouchBar.Label = class TouchBarLabel extends TouchBarItem {
   constructor (config) {
     super(config)
@@ -81,13 +95,6 @@ TouchBar.Label = class TouchBarLabel extends TouchBarItem {
   }
 }
 
-TouchBar.List = class TouchBarList extends TouchBarItem {
-  constructor (config) {
-    super(config)
-    this.config.type = 'list'
-  }
-}
-
 TouchBar.PopOver = class TouchBarPopOver extends TouchBarItem {
   constructor (config) {
     super(config)