Bring up fast user switcher on right-click of the avatar menu on Mac.

Change the behavior of fast user switching on Mac from Command click to right
click to be consistent with Windows and Linux.

BUG=458755

TEST=
1. Disable #enable-fast-user-switcher and enable #new-avatar-menu flags in chrome://flags
2. Relaunch Chrome
3. Right click on the Avatar Button, the fast user switcher should be shown
4. Command+Click on the Avatar Button, nothing should happen

Review URL: https://codereview.chromium.org/916523003

Cr-Commit-Position: refs/heads/master@{#317631}

9 files changed, 220 insertions, 25 deletions

diff --git a/chrome/browser/ui/cocoa/profiles/avatar_base_controller.mm b/chrome/browser/ui/cocoa/profiles/avatar_base_controller.mm
index 66a424a..00cb1b3 100644
--- a/chrome/browser/ui/cocoa/profiles/avatar_base_controller.mm
+++ b/chrome/browser/ui/cocoa/profiles/avatar_base_controller.mm
@@ -33,6 +33,7 @@ const CGFloat kMenuXOffsetAdjust = 2.0;
 @interface AvatarBaseController (Private)
 // Shows the avatar bubble.
 - (IBAction)buttonClicked:(id)sender;
+- (IBAction)buttonRightClicked:(id)sender;
 
 - (void)bubbleWillClose:(NSNotification*)notif;
 
@@ -213,8 +214,14 @@ class ProfileInfoUpdateObserver : public ProfileInfoCacheObserver,
   BrowserWindow::AvatarBubbleMode mode =
       BrowserWindow::AVATAR_BUBBLE_MODE_DEFAULT;
 
-  if ([NSEvent modifierFlags] & NSCommandKeyMask)
-    mode = BrowserWindow::AVATAR_BUBBLE_MODE_FAST_USER_SWITCH;
+  [self showAvatarBubbleAnchoredAt:button_
+                          withMode:mode
+                   withServiceType:signin::GAIA_SERVICE_TYPE_NONE];
+}
+
+- (IBAction)buttonRightClicked:(id)sender {
+  BrowserWindow::AvatarBubbleMode mode =
+      BrowserWindow::AVATAR_BUBBLE_MODE_FAST_USER_SWITCH;
 
   [self showAvatarBubbleAnchoredAt:button_
                           withMode:mode
diff --git a/chrome/browser/ui/cocoa/profiles/avatar_button.h b/chrome/browser/ui/cocoa/profiles/avatar_button.h
new file mode 100644
index 0000000..444110d
--- /dev/null
+++ b/chrome/browser/ui/cocoa/profiles/avatar_button.h
@@ -0,0 +1,23 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_UI_COCOA_PROFILES_AVATAR_BUTTON_H_
+#define CHROME_BROWSER_UI_COCOA_PROFILES_AVATAR_BUTTON_H_
+
+#import <Cocoa/Cocoa.h>
+
+#import "ui/base/cocoa/hover_image_button.h"
+
+// A subclass of HoverImageButton that sends a target-action on right click.
+@interface AvatarButton : HoverImageButton {
+ @private
+  SEL rightAction_;
+}
+
+// Sets the action that will be called when this button is right clicked.
+- (void)setRightAction:(SEL)selector;
+
+@end
+
+#endif //CHROME_BROWSER_UI_COCOA_PROFILES_AVATAR_BUTTON_H_
diff --git a/chrome/browser/ui/cocoa/profiles/avatar_button.mm b/chrome/browser/ui/cocoa/profiles/avatar_button.mm
new file mode 100644
index 0000000..a1d5c12
--- /dev/null
+++ b/chrome/browser/ui/cocoa/profiles/avatar_button.mm
@@ -0,0 +1,48 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "chrome/browser/ui/cocoa/profiles/avatar_button.h"
+
+@interface AvatarButton (Private)
+
+- (void)rightMouseDown:(NSEvent*)event;
+- (void)performRightClick;
+
+@end
+
+@implementation AvatarButton
+
+// Overrides -rightMouseDown and implements a custom mouse tracking loop.
+- (void)rightMouseDown:(NSEvent*)event {
+  NSEvent* nextEvent = event;
+  BOOL mouseInBounds = NO;
+  hoverState_ = kHoverStateMouseDown;
+
+  do {
+    nextEvent = [[self window]
+        nextEventMatchingMask:NSRightMouseDraggedMask |
+                              NSRightMouseUpMask];
+
+    mouseInBounds = NSPointInRect(
+        [self convertPoint:[nextEvent locationInWindow] fromView:nil],
+        [self convertRect:[self frame] fromView:nil]);
+  } while (NSRightMouseUp != [nextEvent type]);
+
+  hoverState_ = kHoverStateNone;
+
+  if (mouseInBounds) {
+    hoverState_ = kHoverStateMouseOver;
+    [self performRightClick];
+  }
+}
+
+- (void)performRightClick {
+  [[super target] performSelector:rightAction_ withObject:self];
+}
+
+- (void)setRightAction:(SEL)selector {
+  rightAction_ = selector;
+}
+
+@end
diff --git a/chrome/browser/ui/cocoa/profiles/avatar_button_controller.mm b/chrome/browser/ui/cocoa/profiles/avatar_button_controller.mm
index 0ed4d4b..b5df7c7 100644
--- a/chrome/browser/ui/cocoa/profiles/avatar_button_controller.mm
+++ b/chrome/browser/ui/cocoa/profiles/avatar_button_controller.mm
@@ -14,11 +14,11 @@
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_window.h"
 #import "chrome/browser/ui/cocoa/browser_window_controller.h"
+#import "chrome/browser/ui/cocoa/profiles/avatar_button.h"
 #include "chrome/grit/generated_resources.h"
 #include "components/signin/core/browser/signin_error_controller.h"
 #include "grit/theme_resources.h"
 #import "ui/base/cocoa/appkit_utils.h"
-#import "ui/base/cocoa/hover_image_button.h"
 #include "ui/base/l10n/l10n_util_mac.h"
 #include "ui/base/nine_image_painter_factory.h"
 #include "ui/base/resource/resource_bundle.h"
@@ -102,7 +102,7 @@ NSImage* GetImageFromResourceID(int resourceId) {
 - (void)drawBezelWithFrame:(NSRect)frame
                     inView:(NSView*)controlView {
   HoverState hoverState =
-      [base::mac::ObjCCastStrict<HoverImageButton>(controlView) hoverState];
+      [base::mac::ObjCCastStrict<AvatarButton>(controlView) hoverState];
   ui::NinePartImageIds imageIds = kNormalBorderImageIds;
   if (isThemedWindow_)
     imageIds = kThemedBorderImageIds;
@@ -146,28 +146,29 @@ NSImage* GetImageFromResourceID(int resourceId) {
         ThemeServiceFactory::GetForProfile(browser->profile());
     isThemedWindow_ = !themeService->UsingSystemTheme();
 
-    HoverImageButton* hoverButton =
-        [[HoverImageButton alloc] initWithFrame:NSZeroRect];
-    button_.reset(hoverButton);
+    AvatarButton* avatarButton =
+        [[AvatarButton alloc] initWithFrame:NSZeroRect];
+    button_.reset(avatarButton);
     base::scoped_nsobject<CustomThemeButtonCell> cell(
         [[CustomThemeButtonCell alloc] initWithThemedWindow:isThemedWindow_]);
-    [button_ setCell:cell.get()];
+    [avatarButton setCell:cell.get()];
 
     // Check if the account already has an authentication error.
     SigninErrorController* errorController =
         profiles::GetSigninErrorController(browser->profile());
     hasError_ = errorController && errorController->HasError();
 
-    [button_ setWantsLayer:YES];
-    [self setView:button_];
+    [avatarButton setWantsLayer:YES];
+    [self setView:avatarButton];
 
-    [button_ setBezelStyle:NSShadowlessSquareBezelStyle];
-    [button_ setButtonType:NSMomentaryChangeButton];
-    [button_ setBordered:YES];
+    [avatarButton setBezelStyle:NSShadowlessSquareBezelStyle];
+    [avatarButton setButtonType:NSMomentaryChangeButton];
+    [avatarButton setBordered:YES];
 
-    [button_ setAutoresizingMask:NSViewMinXMargin | NSViewMinYMargin];
-    [button_ setTarget:self];
-    [button_ setAction:@selector(buttonClicked:)];
+    [avatarButton setAutoresizingMask:NSViewMinXMargin | NSViewMinYMargin];
+    [avatarButton setTarget:self];
+    [avatarButton setAction:@selector(buttonClicked:)];
+    [avatarButton setRightAction:@selector(buttonRightClicked:)];
 
     [self updateAvatarButtonAndLayoutParent:NO];
 
@@ -232,8 +233,8 @@ NSImage* GetImageFromResourceID(int resourceId) {
       profiles::GetAvatarButtonTextForProfile(browser_->profile()));
   [[button_ cell] setHasError:hasError_ withTitle:buttonTitle];
 
-  HoverImageButton* button =
-      base::mac::ObjCCastStrict<HoverImageButton>(button_);
+  AvatarButton* button =
+      base::mac::ObjCCastStrict<AvatarButton>(button_);
   if (useGenericButton) {
     [button setDefaultImage:GetImageFromResourceID(
         IDR_AVATAR_MAC_BUTTON_AVATAR)];
diff --git a/chrome/browser/ui/cocoa/profiles/avatar_button_unittest.mm b/chrome/browser/ui/cocoa/profiles/avatar_button_unittest.mm
new file mode 100644
index 0000000..cca632f
--- /dev/null
+++ b/chrome/browser/ui/cocoa/profiles/avatar_button_unittest.mm
@@ -0,0 +1,93 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#import "chrome/browser/ui/cocoa/profiles/avatar_button.h"
+
+#import "base/mac/scoped_nsobject.h"
+#import "ui/events/test/cocoa_test_event_utils.h"
+#import "ui/gfx/test/ui_cocoa_test_helper.h"
+
+@interface AvatarButton (ExposedForTesting)
+- (void)performRightClick;
+@end
+
+@interface AvatarButtonTestObserver : NSObject
+@property BOOL clicked;
+
+- (void)buttonRightClicked;
+@end
+
+@implementation AvatarButtonTestObserver
+@synthesize clicked = clicked_;
+
+- (void)buttonRightClicked {
+  self.clicked = YES;
+}
+@end
+
+class AvatarButtonTest : public ui::CocoaTest {
+ public:
+  AvatarButtonTest() {
+    NSRect content_frame = [[test_window() contentView] frame];
+    base::scoped_nsobject<AvatarButton> button(
+        [[AvatarButton alloc] initWithFrame:content_frame]);
+    button_ = button.get();
+    [[test_window() contentView] addSubview:button_];
+  }
+
+  AvatarButton* button_;
+};
+
+TEST_F(AvatarButtonTest, RightClick) {
+  base::scoped_nsobject<AvatarButtonTestObserver> observer(
+      [[AvatarButtonTestObserver alloc] init]);
+  [button_ setTarget:observer.get()];
+  [button_ setRightAction:@selector(buttonRightClicked)];
+
+  ASSERT_FALSE(observer.get().clicked);
+
+  [button_ performRightClick];
+  ASSERT_TRUE(observer.get().clicked);
+}
+
+TEST_F(AvatarButtonTest, RightClickInView) {
+  base::scoped_nsobject<AvatarButtonTestObserver> observer(
+      [[AvatarButtonTestObserver alloc] init]);
+  [button_ setTarget:observer.get()];
+  [button_ setRightAction:@selector(buttonRightClicked)];
+
+  ASSERT_FALSE(observer.get().clicked);
+
+  std::pair<NSEvent*, NSEvent*> events =
+      cocoa_test_event_utils::RightMouseClickInView(button_, 1);
+
+  [NSApp postEvent:events.second atStart:YES];
+  [NSApp sendEvent:events.first];
+
+  ASSERT_TRUE(observer.get().clicked);
+}
+
+TEST_F(AvatarButtonTest, RightMouseUpOutOfView) {
+  base::scoped_nsobject<AvatarButtonTestObserver> observer(
+      [[AvatarButtonTestObserver alloc] init]);
+  [button_ setTarget:observer.get()];
+  [button_ setRightAction:@selector(buttonRightClicked)];
+
+  ASSERT_FALSE(observer.get().clicked);
+
+  const NSRect bounds = [button_ convertRect:[button_ bounds] toView:nil];
+  const NSPoint downLocation = NSMakePoint(NSMidX(bounds), NSMidY(bounds));
+  NSEvent* down = cocoa_test_event_utils::MouseEventAtPointInWindow(
+      downLocation, NSRightMouseDown, [button_ window], 1);
+
+  const NSPoint upLocation = NSMakePoint(downLocation.x + bounds.size.width,
+                                         downLocation.y + bounds.size.height);
+  NSEvent* up = cocoa_test_event_utils::MouseEventAtPointInWindow(
+      upLocation, NSRightMouseUp, [button_ window], 1);
+
+  [NSApp postEvent:up atStart:YES];
+  [NSApp sendEvent:down];
+
+  ASSERT_FALSE(observer.get().clicked);
+}
diff --git a/chrome/chrome_browser_ui.gypi b/chrome/chrome_browser_ui.gypi
index e520c87..01b0b29 100644
--- a/chrome/chrome_browser_ui.gypi
+++ b/chrome/chrome_browser_ui.gypi
@@ -623,6 +623,8 @@
       'browser/ui/cocoa/presentation_mode_controller.mm',
       'browser/ui/cocoa/profiles/avatar_base_controller.h',
       'browser/ui/cocoa/profiles/avatar_base_controller.mm',
+      'browser/ui/cocoa/profiles/avatar_button.h',
+      'browser/ui/cocoa/profiles/avatar_button.mm',
       'browser/ui/cocoa/profiles/avatar_button_controller.h',
       'browser/ui/cocoa/profiles/avatar_button_controller.mm',
       'browser/ui/cocoa/profiles/avatar_icon_controller.h',
diff --git a/chrome/chrome_tests_unit.gypi b/chrome/chrome_tests_unit.gypi
index 02ce0bd..c697526 100644
--- a/chrome/chrome_tests_unit.gypi
+++ b/chrome/chrome_tests_unit.gypi
@@ -469,6 +469,7 @@
       'browser/ui/cocoa/passwords/manage_passwords_bubble_pending_view_controller_unittest.mm',
       'browser/ui/cocoa/passwords/manage_passwords_controller_test.h',
       'browser/ui/cocoa/passwords/manage_passwords_controller_test.mm',
+      'browser/ui/cocoa/profiles/avatar_button_unittest.mm',
       'browser/ui/cocoa/profiles/avatar_button_controller_unittest.mm',
       'browser/ui/cocoa/profiles/avatar_icon_controller_unittest.mm',
       'browser/ui/cocoa/profiles/avatar_label_button_unittest.mm',
diff --git a/ui/events/test/cocoa_test_event_utils.h b/ui/events/test/cocoa_test_event_utils.h
index 6f6beb0..ea29e4b 100644
--- a/ui/events/test/cocoa_test_event_utils.h
+++ b/ui/events/test/cocoa_test_event_utils.h
@@ -18,19 +18,28 @@ namespace cocoa_test_event_utils {
 // basic, flesh out as needed.  Points are all in window coordinates;
 // where the window is not specified, coordinate system is undefined
 // (but will be repeated when the event is queried).
-NSEvent* MouseEventWithType(NSEventType type, NSUInteger modifiers);
 NSEvent* MouseEventAtPoint(NSPoint point, NSEventType type,
                            NSUInteger modifiers);
-NSEvent* LeftMouseDownAtPoint(NSPoint point);
-NSEvent* LeftMouseDownAtPointInWindow(NSPoint point, NSWindow* window);
+NSEvent* MouseEventWithType(NSEventType type, NSUInteger modifiers);
+NSEvent* MouseEventAtPointInWindow(NSPoint point,
+                                   NSEventType type,
+                                   NSWindow* window,
+                                   NSUInteger clickCount);
 NSEvent* RightMouseDownAtPoint(NSPoint point);
 NSEvent* RightMouseDownAtPointInWindow(NSPoint point, NSWindow* window);
+NSEvent* LeftMouseDownAtPoint(NSPoint point);
+NSEvent* LeftMouseDownAtPointInWindow(NSPoint point, NSWindow* window);
 
 // Return a mouse down and an up event with the given |clickCount| at
 // |view|'s midpoint.
 std::pair<NSEvent*, NSEvent*> MouseClickInView(NSView* view,
                                                NSUInteger clickCount);
 
+// Return a right mouse down and an up event with the given |clickCount| at
+// |view|'s midpoint.
+std::pair<NSEvent*, NSEvent*> RightMouseClickInView(NSView* view,
+                                                    NSUInteger clickCount);
+
 // Returns a key event with the given character.
 NSEvent* KeyEventWithCharacter(unichar c);
 
diff --git a/ui/events/test/cocoa_test_event_utils.mm b/ui/events/test/cocoa_test_event_utils.mm
index b27cd12..bbc7ac3 100644
--- a/ui/events/test/cocoa_test_event_utils.mm
+++ b/ui/events/test/cocoa_test_event_utils.mm
@@ -72,10 +72,10 @@ NSEvent* MouseEventWithType(NSEventType type, NSUInteger modifiers) {
   return MouseEventAtPoint(NSZeroPoint, type, modifiers);
 }
 
-static NSEvent* MouseEventAtPointInWindow(NSPoint point,
-                                          NSEventType type,
-                                          NSWindow* window,
-                                          NSUInteger clickCount) {
+NSEvent* MouseEventAtPointInWindow(NSPoint point,
+                                   NSEventType type,
+                                   NSWindow* window,
+                                   NSUInteger clickCount) {
   return [NSEvent mouseEventWithType:type
                             location:point
                        modifierFlags:0
@@ -114,6 +114,17 @@ std::pair<NSEvent*,NSEvent*> MouseClickInView(NSView* view,
   return std::make_pair(down, up);
 }
 
+std::pair<NSEvent*, NSEvent*> RightMouseClickInView(NSView* view,
+                                                    NSUInteger clickCount) {
+  const NSRect bounds = [view convertRect:[view bounds] toView:nil];
+  const NSPoint mid_point = NSMakePoint(NSMidX(bounds), NSMidY(bounds));
+  NSEvent* down = MouseEventAtPointInWindow(mid_point, NSRightMouseDown,
+                                            [view window], clickCount);
+  NSEvent* up = MouseEventAtPointInWindow(mid_point, NSRightMouseUp,
+                                          [view window], clickCount);
+  return std::make_pair(down, up);
+}
+
 NSEvent* KeyEventWithCharacter(unichar c) {
   return KeyEventWithKeyCode(0, c, NSKeyDown, 0);
 }