[Mac] Add tab and keyboard navigation to the new avatar bubble

Tabbing should navigate through all the visible controls.

I've changed the EditablePhotoButton to actually be a button and
not just an image, so that tabbing and pressing enter actually
works.

BUG=405056

Review URL: https://codereview.chromium.org/489143002

Cr-Commit-Position: refs/heads/master@{#292455}

chrome/browser/ui/cocoa/profiles/profile_chooser_controller.mm

@@ -85,6 +85,7 @@
 const int kBezelThickness = 3;  // Width of the bezel on an NSButton.
 const int kImageTitleSpacing = 10;
 const int kBlueButtonHeight = 30;
+const CGFloat kFocusRingLineWidth = 2;
 
 // Fixed size for embedded sign in pages as defined in Gaia.
 const CGFloat kFixedGaiaViewWidth = 360;
@@ -410,22 +411,34 @@ - (NSSize)cellSize {
   return buttonSize;
 }
 
-@end
+- (NSFocusRingType)focusRingType {
+  // This is taken care of by the custom drawing code.
+  return NSFocusRingTypeNone;
+}
 
-// A custom button that has a transparent backround.
-@interface TransparentBackgroundButton : NSButton
-@end
+- (void)drawWithFrame:(NSRect)frame inView:(NSView *)controlView {
+  [super drawInteriorWithFrame:frame inView:controlView];
 
-@implementation TransparentBackgroundButton
-- (id)initWithFrame:(NSRect)frameRect {
-  if ((self = [super initWithFrame:frameRect])) {
-    [self setBordered:NO];
-    [self setFont:[NSFont labelFontOfSize:kTextFontSize]];
-    [self setButtonType:NSMomentaryChangeButton];
+  // Focus ring.
+  if ([self showsFirstResponder]) {
+    NSRect focusRingRect =
+        NSInsetRect(frame, kFocusRingLineWidth, kFocusRingLineWidth);
+    // TODO(noms): When we are targetting 10.7, we should change this to use
+    // -drawFocusRingMaskWithFrame instead.
+    [[[NSColor keyboardFocusIndicatorColor] colorWithAlphaComponent:1] set];
+    NSBezierPath* path = [NSBezierPath bezierPathWithRect:focusRingRect];
+    [path setLineWidth:kFocusRingLineWidth];
+    [path stroke];
   }
-  return self;
 }
 
+@end
+
+// A custom image view that has a transparent backround.
+@interface TransparentBackgroundImageView : NSImageView
+@end
+
+@implementation TransparentBackgroundImageView
 - (void)drawRect:(NSRect)dirtyRect {
   NSColor* backgroundColor = [NSColor colorWithCalibratedWhite:1 alpha:0.6f];
   [backgroundColor setFill];
@@ -434,13 +447,31 @@ - (void)drawRect:(NSRect)dirtyRect {
 }
 @end
 
+@interface CustomCircleImageCell : NSButtonCell
+@end
+
+@implementation CustomCircleImageCell
+- (void)drawWithFrame:(NSRect)frame inView:(NSView *)controlView {
+  // Display everything as a circle that spans the entire control.
+  NSBezierPath* path = [NSBezierPath bezierPathWithOvalInRect:frame];
+  [path addClip];
+
+  [super drawImage:[self image] withFrame:frame inView:controlView];
+
+  // Focus ring.
+  if ([self showsFirstResponder]) {
+    [[[NSColor keyboardFocusIndicatorColor] colorWithAlphaComponent:1] set];
+    [path setLineWidth:kFocusRingLineWidth];
+    [path stroke];
+  }
+}
+@end
+
 // A custom image control that shows a "Change" button when moused over.
-@interface EditableProfilePhoto : NSImageView {
+@interface EditableProfilePhoto : HoverImageButton {
  @private
   AvatarMenu* avatarMenu_;  // Weak; Owned by ProfileChooserController.
-  base::scoped_nsobject<TransparentBackgroundButton> changePhotoButton_;
-  // Used to display the "Change" button on hover.
-  ui::ScopedCrTrackingArea trackingArea_;
+  base::scoped_nsobject<TransparentBackgroundImageView> changePhotoImage_;
   ProfileChooserController* controller_;
 }
 
@@ -453,16 +484,6 @@ - (id)initWithFrame:(NSRect)frameRect
 // Called when the "Change" button is clicked.
 - (void)editPhoto:(id)sender;
 
-// When hovering over the profile photo, show the "Change" button.
-- (void)mouseEntered:(NSEvent*)event;
-
-// When hovering away from the profile photo, hide the "Change" button.
-- (void)mouseExited:(NSEvent*)event;
-@end
-
-@interface EditableProfilePhoto (Private)
-// Create the "Change" avatar photo button.
-- (TransparentBackgroundButton*)changePhotoButtonWithRect:(NSRect)rect;
 @end
 
 @implementation EditableProfilePhoto
@@ -474,24 +495,29 @@ - (id)initWithFrame:(NSRect)frameRect
   if ((self = [super initWithFrame:frameRect])) {
     avatarMenu_ = avatarMenu;
     controller_ = controller;
-    [self setImage:CreateProfileImage(
-        profileIcon, kLargeImageSide).ToNSImage()];
 
-    // Add a tracking area so that we can show/hide the button when hovering.
-    trackingArea_.reset([[CrTrackingArea alloc]
-        initWithRect:[self bounds]
-             options:NSTrackingMouseEnteredAndExited | NSTrackingActiveAlways
-               owner:self
-            userInfo:nil]);
-    [self addTrackingArea:trackingArea_.get()];
+    [self setBordered:NO];
+
+    base::scoped_nsobject<CustomCircleImageCell> cell(
+        [[CustomCircleImageCell alloc] init]);
+    [self setCell:cell.get()];
+
+    [self setDefaultImage:CreateProfileImage(
+        profileIcon, kLargeImageSide).ToNSImage()];
+    [self setImagePosition:NSImageOnly];
 
     NSRect bounds = NSMakeRect(0, 0, kLargeImageSide, kLargeImageSide);
     if (editingAllowed) {
-      changePhotoButton_.reset([self changePhotoButtonWithRect:bounds]);
-      [self addSubview:changePhotoButton_];
-
-      // Hide the button until the image is hovered over.
-      [changePhotoButton_ setHidden:YES];
+      [self setTarget:self];
+      [self setAction:@selector(editPhoto:)];
+      changePhotoImage_.reset([[TransparentBackgroundImageView alloc]
+          initWithFrame:bounds]);
+      [changePhotoImage_ setImage:ui::ResourceBundle::GetSharedInstance().
+          GetNativeImageNamed(IDR_ICON_PROFILES_EDIT_CAMERA).AsNSImage()];
+      [self addSubview:changePhotoImage_];
+
+      // Hide the image until the button is hovered over.
+      [changePhotoImage_ setHidden:YES];
     }
 
     // Set the image cell's accessibility strings to be the same as the
@@ -523,36 +549,15 @@ - (id)initWithFrame:(NSRect)frameRect
   return self;
 }
 
-- (void)drawRect:(NSRect)dirtyRect {
-  NSRect bounds = [self bounds];
-
-  // Display the profile picture as a circle.
-  NSBezierPath* path = [NSBezierPath bezierPathWithOvalInRect:bounds];
-  [path addClip];
-  [self.image drawAtPoint:bounds.origin
-                 fromRect:bounds
-                operation:NSCompositeSourceOver
-                 fraction:1.0];
-
-}
-
 - (void)editPhoto:(id)sender {
   avatarMenu_->EditProfile(avatarMenu_->GetActiveProfileIndex());
   [controller_
       postActionPerformed:ProfileMetrics::PROFILE_DESKTOP_MENU_EDIT_IMAGE];
 }
 
-- (void)mouseEntered:(NSEvent*)event {
-  [changePhotoButton_ setHidden:NO];
-}
-
-- (void)mouseExited:(NSEvent*)event {
-  [changePhotoButton_ setHidden:YES];
-}
-
-// Make sure the element is focusable for accessibility.
-- (BOOL)canBecomeKeyView {
-  return YES;
+- (void)setHoverState:(HoverState)state {
+  [super setHoverState:state];
+  [changePhotoImage_ setHidden:([self hoverState] == kHoverStateNone)];
 }
 
 - (BOOL)accessibilityIsIgnored {
@@ -572,16 +577,6 @@ - (void)accessibilityPerformAction:(NSString*)action {
   [super accessibilityPerformAction:action];
 }
 
-- (TransparentBackgroundButton*)changePhotoButtonWithRect:(NSRect)rect {
-  TransparentBackgroundButton* button =
-      [[TransparentBackgroundButton alloc] initWithFrame:rect];
-  [button setImage:ui::ResourceBundle::GetSharedInstance().GetNativeImageNamed(
-      IDR_ICON_PROFILES_EDIT_CAMERA).AsNSImage()];
-  [button setImagePosition:NSImageOnly];
-  [button setTarget:self];
-  [button setAction:@selector(editPhoto:)];
-  return button;
-}
 @end
 
 // A custom text control that turns into a textfield for editing when clicked.
@@ -773,6 +768,26 @@ - (void)drawRect:(NSRect)dirtyRect {
 }
 @end
 
+// A custom dummy button that is used to clear focus from the bubble's controls.
+@interface DummyWindowFocusButton : NSButton
+@end
+
+@implementation DummyWindowFocusButton
+// Ignore accessibility, as this is a placeholder button.
+- (BOOL)accessibilityIsIgnored {
+  return YES;
+}
+
+- (id)accessibilityAttributeValue:(NSString*)attribute {
+  return @[];
+}
+
+- (BOOL)canBecomeKeyView {
+  return false;
+}
+
+@end
+
 @interface ProfileChooserController ()
 // Builds the profile chooser view.
 - (NSView*)buildProfileChooserView;
@@ -1127,7 +1142,15 @@ - (void)initMenuContentsWithView:(profiles::BubbleViewMode)viewToDisplay {
   if (viewMode_ != profiles::BUBBLE_VIEW_MODE_PROFILE_CHOOSER)
     tutorialMode_ = profiles::TUTORIAL_MODE_NONE;
 
+  // Add a dummy, empty element so that we don't initially display any
+  // focus rings.
+  NSButton* dummyFocusButton =
+      [[[DummyWindowFocusButton alloc] initWithFrame:NSZeroRect] autorelease];
+  [dummyFocusButton setNextKeyView:subView];
+  [[self window] makeFirstResponder:dummyFocusButton];
+
   [contentView addSubview:subView];
+  [contentView addSubview:dummyFocusButton];
   SetWindowSize([self window],
       NSMakeSize(NSWidth([subView frame]), NSHeight([subView frame])));
 }
@@ -1671,7 +1694,8 @@ - (NSView*)createGuestProfileView {
 - (NSButton*)createOtherProfileView:(int)itemIndex {
   const AvatarMenu::Item& item = avatarMenu_->GetItemAt(itemIndex);
 
-  NSRect rect = NSMakeRect(0, 0, kFixedMenuWidth, kBlueButtonHeight);
+  NSRect rect = NSMakeRect(
+      0, 0, kFixedMenuWidth, kBlueButtonHeight + kSmallVerticalSpacing);
   base::scoped_nsobject<BackgroundColorHoverButton> profileButton(
       [[BackgroundColorHoverButton alloc]
           initWithFrame:rect

chrome/browser/ui/cocoa/profiles/profile_chooser_controller_unittest.mm

@@ -107,7 +107,7 @@ void EnableFastUserSwitching() {
   StartProfileChooserController();
 
   NSArray* subviews = [[[controller() window] contentView] subviews];
-  ASSERT_EQ(1U, [subviews count]);
+  ASSERT_EQ(2U, [subviews count]);
   subviews = [[subviews objectAtIndex:0] subviews];
 
   // Three profiles means we should have one active card, one separator and
@@ -146,7 +146,7 @@ void EnableFastUserSwitching() {
 
   // Profile icon.
   NSView* activeProfileImage = [activeCardSubviews objectAtIndex:2];
-  EXPECT_TRUE([activeProfileImage isKindOfClass:[NSImageView class]]);
+  EXPECT_TRUE([activeProfileImage isKindOfClass:[NSButton class]]);
 
   // Profile name.
   NSView* activeProfileName = [activeCardSubviews objectAtIndex:1];
@@ -174,7 +174,7 @@ void EnableFastUserSwitching() {
   StartProfileChooserController();
 
   NSArray* subviews = [[[controller() window] contentView] subviews];
-  ASSERT_EQ(1U, [subviews count]);
+  ASSERT_EQ(2U, [subviews count]);
   subviews = [[subviews objectAtIndex:0] subviews];
 
   // Three profiles means we should have one active card and a
@@ -217,7 +217,7 @@ void EnableFastUserSwitching() {
 
   // Profile icon.
   NSView* activeProfileImage = [activeCardSubviews objectAtIndex:2];
-  EXPECT_TRUE([activeProfileImage isKindOfClass:[NSImageView class]]);
+  EXPECT_TRUE([activeProfileImage isKindOfClass:[NSButton class]]);
 
   // Profile name.
   NSView* activeProfileName = [activeCardSubviews objectAtIndex:1];
@@ -248,7 +248,7 @@ void EnableFastUserSwitching() {
   StartProfileChooserController();
 
   NSArray* subviews = [[[controller() window] contentView] subviews];
-  ASSERT_EQ(1U, [subviews count]);
+  ASSERT_EQ(2U, [subviews count]);
   subviews = [[subviews objectAtIndex:0] subviews];
   NSString* sortedNames[] = { @"Another Test",
                               @"New Profile",
@@ -280,7 +280,7 @@ void EnableFastUserSwitching() {
   switches::EnableNewAvatarMenuForTesting(CommandLine::ForCurrentProcess());
   StartProfileChooserController();
   NSArray* subviews = [[[controller() window] contentView] subviews];
-  ASSERT_EQ(1U, [subviews count]);
+  ASSERT_EQ(2U, [subviews count]);
   subviews = [[subviews objectAtIndex:0] subviews];
   NSArray* activeCardSubviews = [[subviews objectAtIndex:2] subviews];
   NSArray* activeCardLinks = [[activeCardSubviews objectAtIndex:0] subviews];
@@ -309,7 +309,7 @@ void EnableFastUserSwitching() {
 
   StartProfileChooserController();
   NSArray* subviews = [[[controller() window] contentView] subviews];
-  ASSERT_EQ(1U, [subviews count]);
+  ASSERT_EQ(2U, [subviews count]);
   subviews = [[subviews objectAtIndex:0] subviews];
   NSArray* activeCardSubviews = [[subviews objectAtIndex:2] subviews];
   NSArray* activeCardLinks = [[activeCardSubviews objectAtIndex:0] subviews];
@@ -331,7 +331,7 @@ void EnableFastUserSwitching() {
 
   StartProfileChooserController();
   NSArray* subviews = [[[controller() window] contentView] subviews];
-  ASSERT_EQ(1U, [subviews count]);
+  ASSERT_EQ(2U, [subviews count]);
   subviews = [[subviews objectAtIndex:0] subviews];
   NSArray* activeCardSubviews = [[subviews objectAtIndex:2] subviews];
   NSArray* activeCardLinks = [[activeCardSubviews objectAtIndex:0] subviews];
@@ -366,7 +366,7 @@ void EnableFastUserSwitching() {
       profiles::BUBBLE_VIEW_MODE_ACCOUNT_MANAGEMENT];
 
   NSArray* subviews = [[[controller() window] contentView] subviews];
-  ASSERT_EQ(1U, [subviews count]);
+  ASSERT_EQ(2U, [subviews count]);
   subviews = [[subviews objectAtIndex:0] subviews];
 
   // There should be one active card, one accounts container, two separators
@@ -443,7 +443,7 @@ void EnableFastUserSwitching() {
 
   // Profile icon.
   NSView* activeProfileImage = [activeCardSubviews objectAtIndex:2];
-  EXPECT_TRUE([activeProfileImage isKindOfClass:[NSImageView class]]);
+  EXPECT_TRUE([activeProfileImage isKindOfClass:[NSButton class]]);
 
   // Profile name.
   NSView* activeProfileName = [activeCardSubviews objectAtIndex:1];
@@ -470,7 +470,7 @@ void EnableFastUserSwitching() {
 
   StartProfileChooserController();
   NSArray* subviews = [[[controller() window] contentView] subviews];
-  ASSERT_EQ(1U, [subviews count]);
+  ASSERT_EQ(2U, [subviews count]);
   subviews = [[subviews objectAtIndex:0] subviews];
 
   // Three profiles means we should have one active card, one separator, one
@@ -503,7 +503,7 @@ void EnableFastUserSwitching() {
 
   StartProfileChooserController();
   NSArray* subviews = [[[controller() window] contentView] subviews];
-  ASSERT_EQ(1U, [subviews count]);
+  ASSERT_EQ(2U, [subviews count]);
   subviews = [[subviews objectAtIndex:0] subviews];
 
   // Three profiles means we should have one active card, one separator, one