ios/chrome/browser/authentication/ui_bundled/views/identity_view.mm - chromium/src.git - Git at Google

 // Copyright 2018 The Chromium Authors
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 #import "ios/chrome/browser/authentication/ui_bundled/views/identity_view.h"

 #import "base/check.h"
 #import "base/check_op.h"
 #import "base/notreached.h"
 #import "ios/chrome/browser/shared/model/profile/features.h"
 #import "ios/chrome/browser/shared/ui/symbols/symbols.h"
 #import "ios/chrome/browser/shared/ui/util/uikit_ui_util.h"
 #import "ios/chrome/common/ui/colors/semantic_color_names.h"
 #import "ios/chrome/common/ui/util/constraints_ui_util.h"

 namespace {

 // List of constants related to the IdentityViewStyle.
 typedef struct {
   const CGFloat avatarLeadingMargin;
   const CGFloat avatarSize;
   const CGFloat managementIconTrailingMargin;
   const CGFloat titleOffset;
   const CGFloat minimumTopMargin;
   const CGFloat minimumBottomMargin;
 } StyleValues;

 const StyleValues kDefaultStyle = {
     16., /* avatarLeadingMargin */
     40., /* avatarSize */
     0.,  /* managementIconTrailingMargin */
     4.,  /* titleOffset */
     12., /* minimumTopMargin */
     12., /* minimumBottomMargin */
 };

 const StyleValues kSignInChooseryStyle = {
     24., /* avatarLeadingMargin */
     40., /* avatarSize */
     16., /* managementIconTrailingMargin */
     4.,  /* titleOffset */
     7.,  /* minimumTopMargin */
     7.,  /* minimumBottomMargin */
 };

 const StyleValues kConsistencyStyle = {
     16., /* avatarLeadingMargin */
     30., /* avatarSize */
     16., /* managementIconTrailingMargin */
     0.,  /* titleOffset */
     10., /* minimumTopMargin */
     8.,  /* minimumBottomMargin */
 };

 const StyleValues kConsistencyContainedStyle = {
     16., /* avatarLeadingMargin */
     30., /* avatarSize */
     4.,  /* managementIconTrailingMargin */
     0.,  /* titleOffset */
     10., /* minimumTopMargin */
     8.,  /* minimumBottomMargin */
 };

 const StyleValues kConsistencyDefaultIdentityStyle = {
     16., /* avatarLeadingMargin */
     30., /* avatarSize */
     0.,  /* managementIconTrailingMargin */
     0.,  /* titleOffset */
     10., /* minimumTopMargin */
     8.,  /* minimumBottomMargin */
 };

 // Distances/margins.
 constexpr CGFloat kHorizontalAvatarLeadingMargin = 16.;

 // Point size of enterprise icon in the bottom view.
 constexpr CGFloat kEnterpriseIconPointSize = 20;

 }  // namespace

 @interface IdentityView ()

 // Avatar.
 @property(nonatomic, strong) UIImageView* avatarView;
 // Contains the name if it exists, otherwise it contains the email.
 @property(nonatomic, strong) UILabel* title;
 // Contains the email if the name exists, otherwise it is hidden.
 @property(nonatomic, strong) UILabel* subtitle;
 // Management icon.
 @property(nonatomic, strong) UIImageView* managementIconView;
 // Constraints if the name exists.
 @property(nonatomic, strong) NSLayoutConstraint* titleConstraintForNameAndEmail;
 // Constraints if the name doesn't exist.
 @property(nonatomic, strong) NSLayoutConstraint* titleConstraintForEmailOnly;
 // Constraints to update when `self.minimumTopMargin` is updated.
 @property(nonatomic, strong) NSArray<NSLayoutConstraint*>* topConstraints;
 // Constraints to update when `self.minimumBottomMargin` is updated.
 @property(nonatomic, strong) NSArray<NSLayoutConstraint*>* bottomConstraints;
 // Constraints for the avatar size.
 @property(nonatomic, strong)
     NSArray<NSLayoutConstraint*>* avatarSizeConstraints;
 // Leading margin constraint for the avatar.
 @property(nonatomic, strong) NSLayoutConstraint* avatarLeadingMarginConstraint;
 // Trailing margin constraint for the management icon.
 @property(nonatomic, strong)
     NSLayoutConstraint* managementIconTrailingMarginConstraint;

 @end

 @implementation IdentityView

 - (instancetype)initWithFrame:(CGRect)frame {
   self = [super initWithFrame:frame];
   if (self) {
     self.userInteractionEnabled = NO;
     // Avatar view.
     _avatarView = [[UIImageView alloc] init];
     _avatarView.translatesAutoresizingMaskIntoConstraints = NO;
     _avatarView.clipsToBounds = YES;
     [self addSubview:_avatarView];

     // Title.
     _title = [[UILabel alloc] init];
     _title.adjustsFontForContentSizeCategory = YES;
     _title.translatesAutoresizingMaskIntoConstraints = NO;
     _title.numberOfLines = 1;
     _title.textColor = [UIColor colorNamed:kTextPrimaryColor];
     _title.font = [UIFont preferredFontForTextStyle:UIFontTextStyleSubheadline];
     _title.adjustsFontSizeToFitWidth = NO;
     _title.lineBreakMode = NSLineBreakByTruncatingTail;

     // Subtitle.
     _subtitle = [[UILabel alloc] init];
     _subtitle.adjustsFontForContentSizeCategory = YES;
     _subtitle.translatesAutoresizingMaskIntoConstraints = NO;
     _subtitle.numberOfLines = 1;
     _subtitle.textColor = [UIColor colorNamed:kTextSecondaryColor];
     _subtitle.font = [UIFont preferredFontForTextStyle:UIFontTextStyleCaption1];
     _subtitle.adjustsFontSizeToFitWidth = NO;
     _subtitle.lineBreakMode = NSLineBreakByTruncatingTail;

     // Text container.
     UIStackView* contentView =
         [[UIStackView alloc] initWithArrangedSubviews:@[ _title, _subtitle ]];
     contentView.axis = UILayoutConstraintAxisVertical;
     contentView.distribution = UIStackViewDistributionEqualSpacing;
     contentView.alignment = UIStackViewAlignmentLeading;
     contentView.translatesAutoresizingMaskIntoConstraints = NO;
     [self addSubview:contentView];

     // Enterprise icon
     _managementIconView = [[UIImageView alloc] init];
     _managementIconView.image = SymbolWithPalette(
         CustomSymbolWithPointSize(kEnterpriseSymbol, kEnterpriseIconPointSize),
         @[ [UIColor colorNamed:kStaticGrey600Color] ]);
     _managementIconView.translatesAutoresizingMaskIntoConstraints = NO;
     _managementIconView.clipsToBounds = YES;
     [_managementIconView
         setContentCompressionResistancePriority:UILayoutPriorityDefaultLow
                                         forAxis:
                                             UILayoutConstraintAxisHorizontal];
     [self addSubview:_managementIconView];

     // Layout constraints.
     _avatarLeadingMarginConstraint = [_avatarView.leadingAnchor
         constraintEqualToAnchor:self.leadingAnchor
                        constant:kDefaultStyle.avatarLeadingMargin];
     [NSLayoutConstraint activateConstraints:@[
       [contentView.leadingAnchor
           constraintEqualToAnchor:_avatarView.trailingAnchor
                          constant:kHorizontalAvatarLeadingMargin],
       _avatarLeadingMarginConstraint,
     ]];
     _avatarSizeConstraints = @[
       [_avatarView.heightAnchor
           constraintEqualToConstant:kDefaultStyle.avatarSize],
       [_avatarView.widthAnchor
           constraintEqualToConstant:kDefaultStyle.avatarSize],
     ];
     [NSLayoutConstraint activateConstraints:_avatarSizeConstraints];
     AddSameCenterYConstraint(self, _avatarView);

     _managementIconTrailingMarginConstraint = [_managementIconView
                                                    .trailingAnchor
         constraintEqualToAnchor:self.trailingAnchor
                        constant:-kDefaultStyle.managementIconTrailingMargin];
     _managementIconTrailingMarginConstraint.active = YES;
     AddSameCenterYConstraint(self, _managementIconView);

     AddSameConstraintsToSides(_title, _subtitle,
                               LayoutSides::kLeading | LayoutSides::kTrailing);
     _titleConstraintForNameAndEmail =
         [_subtitle.topAnchor constraintEqualToAnchor:_title.bottomAnchor
                                             constant:kDefaultStyle.titleOffset];
     _titleConstraintForEmailOnly =
         [contentView.bottomAnchor constraintEqualToAnchor:_title.bottomAnchor];

     [NSLayoutConstraint activateConstraints:@[
       [self.centerYAnchor constraintEqualToAnchor:contentView.centerYAnchor],
       [contentView.leadingAnchor constraintEqualToAnchor:_title.leadingAnchor],
       [contentView.leadingAnchor
           constraintEqualToAnchor:_subtitle.leadingAnchor],
       [contentView.trailingAnchor
           constraintEqualToAnchor:_managementIconView.leadingAnchor
                          constant:-kHorizontalAvatarLeadingMargin],
       [contentView.topAnchor constraintEqualToAnchor:_title.topAnchor],
       [contentView.bottomAnchor constraintEqualToAnchor:_subtitle.bottomAnchor],
     ]];

     _topConstraints = @[
       [_avatarView.topAnchor
           constraintGreaterThanOrEqualToAnchor:self.topAnchor
                                       constant:kDefaultStyle.minimumTopMargin],
       [_title.topAnchor
           constraintGreaterThanOrEqualToAnchor:self.topAnchor
                                       constant:kDefaultStyle.minimumTopMargin],
       [_managementIconView.topAnchor
           constraintGreaterThanOrEqualToAnchor:self.topAnchor
                                       constant:kDefaultStyle.minimumTopMargin],
     ];
     [NSLayoutConstraint activateConstraints:_topConstraints];
     _bottomConstraints = @[
       [self.bottomAnchor
           constraintGreaterThanOrEqualToAnchor:_avatarView.bottomAnchor
                                       constant:kDefaultStyle
                                                    .minimumBottomMargin],
       [self.bottomAnchor
           constraintGreaterThanOrEqualToAnchor:_subtitle.bottomAnchor
                                       constant:kDefaultStyle
                                                    .minimumBottomMargin],
       [self.bottomAnchor
           constraintGreaterThanOrEqualToAnchor:_managementIconView.bottomAnchor
                                       constant:kDefaultStyle
                                                    .minimumBottomMargin],
     ];
     [NSLayoutConstraint activateConstraints:_bottomConstraints];

     _managementIconView.hidden = YES;
     // Initialize the style.
     [self updateStyle];
   }
   return self;
 }

 #pragma mark - Setter

 - (void)setAvatar:(UIImage*)avatarImage {
   if (!avatarImage) {
     self.avatarView.image = nil;
   } else {
     const StyleValues* style = [self styleValues];
     DCHECK_EQ(avatarImage.size.width, style->avatarSize);
     DCHECK_EQ(avatarImage.size.height, style->avatarSize);
     self.avatarView.image = avatarImage;
     self.avatarView.layer.cornerRadius = style->avatarSize / 2.0;
   }
 }

 - (void)setTitle:(NSString*)title
         subtitle:(NSString*)subtitle
          managed:(BOOL)managed {
   DCHECK(title);
   self.title.text = title;
   if (!subtitle.length) {
     self.titleConstraintForNameAndEmail.active = NO;
     self.titleConstraintForEmailOnly.active = YES;
     self.subtitle.hidden = YES;
   } else {
     self.titleConstraintForEmailOnly.active = NO;
     self.titleConstraintForNameAndEmail.active = YES;
     self.subtitle.hidden = NO;
     self.subtitle.text = subtitle;
   }
   self.managementIconView.hidden =
       !AreSeparateProfilesForManagedAccountsEnabled() || !managed;
   // Update the style to reflect the management icon changes.
   [self updateStyle];
 }

 - (void)setTitleColor:(UIColor*)color {
   self.title.textColor = color;
 }

 #pragma mark - properties

 - (void)setTitleFont:(UIFont*)titleFont {
   self.title.font = titleFont;
 }

 - (UIFont*)titleFont {
   return self.title.font;
 }

 - (void)setSubtitleFont:(UIFont*)subtitleFont {
   self.subtitle.font = subtitleFont;
 }

 - (UIFont*)subtitleFont {
   return self.subtitleFont;
 }

 - (void)setStyle:(IdentityViewStyle)style {
   if (_style == style) {
     return;
   }
   _style = style;
   [self updateStyle];
 }

 #pragma mark - private

 // Returns the default style values according to `self.style`.
 - (const StyleValues*)styleValues {
   switch (self.style) {
     case IdentityViewStyleDefault:
       return &kDefaultStyle;
     case IdentityViewStyleIdentityChooser:
       return &kSignInChooseryStyle;
     case IdentityViewStyleConsistency:
       return &kConsistencyStyle;
     case IdentityViewStyleConsistencyContained:
       return &kConsistencyContainedStyle;
     case IdentityViewStyleConsistencyDefaultIdentity:
       return &kConsistencyDefaultIdentityStyle;
   }
   NOTREACHED();
 }

 // Updates the current view according the style.
 - (void)updateStyle {
   const StyleValues* style = [self styleValues];
   switch (self.style) {
     case IdentityViewStyleDefault:
       self.titleFont =
           [UIFont preferredFontForTextStyle:UIFontTextStyleSubheadline];
       self.subtitleFont =
           [UIFont preferredFontForTextStyle:UIFontTextStyleCaption1];
       break;
     case IdentityViewStyleIdentityChooser:
       self.titleFont =
           [UIFont preferredFontForTextStyle:UIFontTextStyleSubheadline];
       self.subtitleFont =
           [UIFont preferredFontForTextStyle:UIFontTextStyleCaption1];
       break;
     case IdentityViewStyleConsistency:
     case IdentityViewStyleConsistencyContained:
     case IdentityViewStyleConsistencyDefaultIdentity:
       self.titleFont = [UIFont preferredFontForTextStyle:UIFontTextStyleBody];
       self.subtitleFont =
           [UIFont preferredFontForTextStyle:UIFontTextStyleFootnote];
       break;
   }
   DCHECK(style);
   self.avatarLeadingMarginConstraint.constant = style->avatarLeadingMargin;
   for (NSLayoutConstraint* constraint in self.avatarSizeConstraints) {
     constraint.constant = style->avatarSize;
   }
   self.avatarView.layer.cornerRadius = style->avatarSize / 2.;
   // Ensure the management icon does not collapse when it is visible but
   // collapses when hidden.
   [_managementIconView
       setContentCompressionResistancePriority:self.managementIconView.hidden
                                                   ? UILayoutPriorityDefaultLow
                                                   : UILayoutPriorityRequired
                                       forAxis:UILayoutConstraintAxisHorizontal];
   self.managementIconTrailingMarginConstraint.constant =
       self.managementIconView.hidden ? 0.
                                      : -style->managementIconTrailingMargin;
   for (NSLayoutConstraint* constraint in self.topConstraints) {
     constraint.constant = style->minimumTopMargin;
   }
   for (NSLayoutConstraint* constraint in self.bottomConstraints) {
     constraint.constant = style->minimumBottomMargin;
   }
   self.titleConstraintForNameAndEmail.constant = style->titleOffset;
 }

 @end
	// Copyright 2018 The Chromium Authors
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	#import "ios/chrome/browser/authentication/ui_bundled/views/identity_view.h"

	#import "base/check.h"
	#import "base/check_op.h"
	#import "base/notreached.h"
	#import "ios/chrome/browser/shared/model/profile/features.h"
	#import "ios/chrome/browser/shared/ui/symbols/symbols.h"
	#import "ios/chrome/browser/shared/ui/util/uikit_ui_util.h"
	#import "ios/chrome/common/ui/colors/semantic_color_names.h"
	#import "ios/chrome/common/ui/util/constraints_ui_util.h"

	namespace {

	// List of constants related to the IdentityViewStyle.
	typedef struct {
	const CGFloat avatarLeadingMargin;
	const CGFloat avatarSize;
	const CGFloat managementIconTrailingMargin;
	const CGFloat titleOffset;
	const CGFloat minimumTopMargin;
	const CGFloat minimumBottomMargin;
	} StyleValues;

	const StyleValues kDefaultStyle = {
	16., /* avatarLeadingMargin */
	40., /* avatarSize */
	0., /* managementIconTrailingMargin */
	4., /* titleOffset */
	12., /* minimumTopMargin */
	12., /* minimumBottomMargin */
	};

	const StyleValues kSignInChooseryStyle = {
	24., /* avatarLeadingMargin */
	40., /* avatarSize */
	16., /* managementIconTrailingMargin */
	4., /* titleOffset */
	7., /* minimumTopMargin */
	7., /* minimumBottomMargin */
	};

	const StyleValues kConsistencyStyle = {
	16., /* avatarLeadingMargin */
	30., /* avatarSize */
	16., /* managementIconTrailingMargin */
	0., /* titleOffset */
	10., /* minimumTopMargin */
	8., /* minimumBottomMargin */
	};

	const StyleValues kConsistencyContainedStyle = {
	16., /* avatarLeadingMargin */
	30., /* avatarSize */
	4., /* managementIconTrailingMargin */
	0., /* titleOffset */
	10., /* minimumTopMargin */
	8., /* minimumBottomMargin */
	};

	const StyleValues kConsistencyDefaultIdentityStyle = {
	16., /* avatarLeadingMargin */
	30., /* avatarSize */
	0., /* managementIconTrailingMargin */
	0., /* titleOffset */
	10., /* minimumTopMargin */
	8., /* minimumBottomMargin */
	};

	// Distances/margins.
	constexpr CGFloat kHorizontalAvatarLeadingMargin = 16.;

	// Point size of enterprise icon in the bottom view.
	constexpr CGFloat kEnterpriseIconPointSize = 20;

	} // namespace

	@interface IdentityView ()

	// Avatar.
	@property(nonatomic, strong) UIImageView* avatarView;
	// Contains the name if it exists, otherwise it contains the email.
	@property(nonatomic, strong) UILabel* title;
	// Contains the email if the name exists, otherwise it is hidden.
	@property(nonatomic, strong) UILabel* subtitle;
	// Management icon.
	@property(nonatomic, strong) UIImageView* managementIconView;
	// Constraints if the name exists.
	@property(nonatomic, strong) NSLayoutConstraint* titleConstraintForNameAndEmail;
	// Constraints if the name doesn't exist.
	@property(nonatomic, strong) NSLayoutConstraint* titleConstraintForEmailOnly;
	// Constraints to update when `self.minimumTopMargin` is updated.
	@property(nonatomic, strong) NSArray<NSLayoutConstraint> topConstraints;
	// Constraints to update when `self.minimumBottomMargin` is updated.
	@property(nonatomic, strong) NSArray<NSLayoutConstraint> bottomConstraints;
	// Constraints for the avatar size.
	@property(nonatomic, strong)
	NSArray<NSLayoutConstraint> avatarSizeConstraints;
	// Leading margin constraint for the avatar.
	@property(nonatomic, strong) NSLayoutConstraint* avatarLeadingMarginConstraint;
	// Trailing margin constraint for the management icon.
	@property(nonatomic, strong)
	NSLayoutConstraint* managementIconTrailingMarginConstraint;

	@end

	@implementation IdentityView

	- (instancetype)initWithFrame:(CGRect)frame {
	self = [super initWithFrame:frame];
	if (self) {
	self.userInteractionEnabled = NO;
	// Avatar view.
	_avatarView = [[UIImageView alloc] init];
	_avatarView.translatesAutoresizingMaskIntoConstraints = NO;
	_avatarView.clipsToBounds = YES;
	[self addSubview:_avatarView];

	// Title.
	_title = [[UILabel alloc] init];
	_title.adjustsFontForContentSizeCategory = YES;
	_title.translatesAutoresizingMaskIntoConstraints = NO;
	_title.numberOfLines = 1;
	_title.textColor = [UIColor colorNamed:kTextPrimaryColor];
	_title.font = [UIFont preferredFontForTextStyle:UIFontTextStyleSubheadline];
	_title.adjustsFontSizeToFitWidth = NO;
	_title.lineBreakMode = NSLineBreakByTruncatingTail;

	// Subtitle.
	_subtitle = [[UILabel alloc] init];
	_subtitle.adjustsFontForContentSizeCategory = YES;
	_subtitle.translatesAutoresizingMaskIntoConstraints = NO;
	_subtitle.numberOfLines = 1;
	_subtitle.textColor = [UIColor colorNamed:kTextSecondaryColor];
	_subtitle.font = [UIFont preferredFontForTextStyle:UIFontTextStyleCaption1];
	_subtitle.adjustsFontSizeToFitWidth = NO;
	_subtitle.lineBreakMode = NSLineBreakByTruncatingTail;

	// Text container.
	UIStackView* contentView =
	[[UIStackView alloc] initWithArrangedSubviews:@[ _title, _subtitle ]];
	contentView.axis = UILayoutConstraintAxisVertical;
	contentView.distribution = UIStackViewDistributionEqualSpacing;
	contentView.alignment = UIStackViewAlignmentLeading;
	contentView.translatesAutoresizingMaskIntoConstraints = NO;
	[self addSubview:contentView];

	// Enterprise icon
	_managementIconView = [[UIImageView alloc] init];
	_managementIconView.image = SymbolWithPalette(
	CustomSymbolWithPointSize(kEnterpriseSymbol, kEnterpriseIconPointSize),
	@[ [UIColor colorNamed:kStaticGrey600Color] ]);
	_managementIconView.translatesAutoresizingMaskIntoConstraints = NO;
	_managementIconView.clipsToBounds = YES;
	[_managementIconView
	setContentCompressionResistancePriority:UILayoutPriorityDefaultLow
	forAxis:
	UILayoutConstraintAxisHorizontal];
	[self addSubview:_managementIconView];

	// Layout constraints.
	_avatarLeadingMarginConstraint = [_avatarView.leadingAnchor
	constraintEqualToAnchor:self.leadingAnchor
	constant:kDefaultStyle.avatarLeadingMargin];
	[NSLayoutConstraint activateConstraints:@[
	[contentView.leadingAnchor
	constraintEqualToAnchor:_avatarView.trailingAnchor
	constant:kHorizontalAvatarLeadingMargin],
	_avatarLeadingMarginConstraint,
	]];
	_avatarSizeConstraints = @[
	[_avatarView.heightAnchor
	constraintEqualToConstant:kDefaultStyle.avatarSize],
	[_avatarView.widthAnchor
	constraintEqualToConstant:kDefaultStyle.avatarSize],
	];
	[NSLayoutConstraint activateConstraints:_avatarSizeConstraints];
	AddSameCenterYConstraint(self, _avatarView);

	_managementIconTrailingMarginConstraint = [_managementIconView
	.trailingAnchor
	constraintEqualToAnchor:self.trailingAnchor
	constant:-kDefaultStyle.managementIconTrailingMargin];
	_managementIconTrailingMarginConstraint.active = YES;
	AddSameCenterYConstraint(self, _managementIconView);

	AddSameConstraintsToSides(_title, _subtitle,
	LayoutSides::kLeading \| LayoutSides::kTrailing);
	_titleConstraintForNameAndEmail =
	[_subtitle.topAnchor constraintEqualToAnchor:_title.bottomAnchor
	constant:kDefaultStyle.titleOffset];
	_titleConstraintForEmailOnly =
	[contentView.bottomAnchor constraintEqualToAnchor:_title.bottomAnchor];

	[NSLayoutConstraint activateConstraints:@[
	[self.centerYAnchor constraintEqualToAnchor:contentView.centerYAnchor],
	[contentView.leadingAnchor constraintEqualToAnchor:_title.leadingAnchor],
	[contentView.leadingAnchor
	constraintEqualToAnchor:_subtitle.leadingAnchor],
	[contentView.trailingAnchor
	constraintEqualToAnchor:_managementIconView.leadingAnchor
	constant:-kHorizontalAvatarLeadingMargin],
	[contentView.topAnchor constraintEqualToAnchor:_title.topAnchor],
	[contentView.bottomAnchor constraintEqualToAnchor:_subtitle.bottomAnchor],
	]];

	_topConstraints = @[
	[_avatarView.topAnchor
	constraintGreaterThanOrEqualToAnchor:self.topAnchor
	constant:kDefaultStyle.minimumTopMargin],
	[_title.topAnchor
	constraintGreaterThanOrEqualToAnchor:self.topAnchor
	constant:kDefaultStyle.minimumTopMargin],
	[_managementIconView.topAnchor
	constraintGreaterThanOrEqualToAnchor:self.topAnchor
	constant:kDefaultStyle.minimumTopMargin],
	];
	[NSLayoutConstraint activateConstraints:_topConstraints];
	_bottomConstraints = @[
	[self.bottomAnchor
	constraintGreaterThanOrEqualToAnchor:_avatarView.bottomAnchor
	constant:kDefaultStyle
	.minimumBottomMargin],
	[self.bottomAnchor
	constraintGreaterThanOrEqualToAnchor:_subtitle.bottomAnchor
	constant:kDefaultStyle
	.minimumBottomMargin],
	[self.bottomAnchor
	constraintGreaterThanOrEqualToAnchor:_managementIconView.bottomAnchor
	constant:kDefaultStyle
	.minimumBottomMargin],
	];
	[NSLayoutConstraint activateConstraints:_bottomConstraints];

	_managementIconView.hidden = YES;
	// Initialize the style.
	[self updateStyle];
	}
	return self;
	}

	#pragma mark - Setter

	- (void)setAvatar:(UIImage*)avatarImage {
	if (!avatarImage) {
	self.avatarView.image = nil;
	} else {
	const StyleValues* style = [self styleValues];
	DCHECK_EQ(avatarImage.size.width, style->avatarSize);
	DCHECK_EQ(avatarImage.size.height, style->avatarSize);
	self.avatarView.image = avatarImage;
	self.avatarView.layer.cornerRadius = style->avatarSize / 2.0;
	}
	}

	- (void)setTitle:(NSString*)title
	subtitle:(NSString*)subtitle
	managed:(BOOL)managed {
	DCHECK(title);
	self.title.text = title;
	if (!subtitle.length) {
	self.titleConstraintForNameAndEmail.active = NO;
	self.titleConstraintForEmailOnly.active = YES;
	self.subtitle.hidden = YES;
	} else {
	self.titleConstraintForEmailOnly.active = NO;
	self.titleConstraintForNameAndEmail.active = YES;
	self.subtitle.hidden = NO;
	self.subtitle.text = subtitle;
	}
	self.managementIconView.hidden =
	!AreSeparateProfilesForManagedAccountsEnabled() \|\| !managed;
	// Update the style to reflect the management icon changes.
	[self updateStyle];
	}

	- (void)setTitleColor:(UIColor*)color {
	self.title.textColor = color;
	}

	#pragma mark - properties

	- (void)setTitleFont:(UIFont*)titleFont {
	self.title.font = titleFont;
	}

	- (UIFont*)titleFont {
	return self.title.font;
	}

	- (void)setSubtitleFont:(UIFont*)subtitleFont {
	self.subtitle.font = subtitleFont;
	}

	- (UIFont*)subtitleFont {
	return self.subtitleFont;
	}

	- (void)setStyle:(IdentityViewStyle)style {
	if (_style == style) {
	return;
	}
	_style = style;
	[self updateStyle];
	}

	#pragma mark - private

	// Returns the default style values according to `self.style`.
	- (const StyleValues*)styleValues {
	switch (self.style) {
	case IdentityViewStyleDefault:
	return &kDefaultStyle;
	case IdentityViewStyleIdentityChooser:
	return &kSignInChooseryStyle;
	case IdentityViewStyleConsistency:
	return &kConsistencyStyle;
	case IdentityViewStyleConsistencyContained:
	return &kConsistencyContainedStyle;
	case IdentityViewStyleConsistencyDefaultIdentity:
	return &kConsistencyDefaultIdentityStyle;
	}
	NOTREACHED();
	}

	// Updates the current view according the style.
	- (void)updateStyle {
	const StyleValues* style = [self styleValues];
	switch (self.style) {
	case IdentityViewStyleDefault:
	self.titleFont =
	[UIFont preferredFontForTextStyle:UIFontTextStyleSubheadline];
	self.subtitleFont =
	[UIFont preferredFontForTextStyle:UIFontTextStyleCaption1];
	break;
	case IdentityViewStyleIdentityChooser:
	self.titleFont =
	[UIFont preferredFontForTextStyle:UIFontTextStyleSubheadline];
	self.subtitleFont =
	[UIFont preferredFontForTextStyle:UIFontTextStyleCaption1];
	break;
	case IdentityViewStyleConsistency:
	case IdentityViewStyleConsistencyContained:
	case IdentityViewStyleConsistencyDefaultIdentity:
	self.titleFont = [UIFont preferredFontForTextStyle:UIFontTextStyleBody];
	self.subtitleFont =
	[UIFont preferredFontForTextStyle:UIFontTextStyleFootnote];
	break;
	}
	DCHECK(style);
	self.avatarLeadingMarginConstraint.constant = style->avatarLeadingMargin;
	for (NSLayoutConstraint* constraint in self.avatarSizeConstraints) {
	constraint.constant = style->avatarSize;
	}
	self.avatarView.layer.cornerRadius = style->avatarSize / 2.;
	// Ensure the management icon does not collapse when it is visible but
	// collapses when hidden.
	[_managementIconView
	setContentCompressionResistancePriority:self.managementIconView.hidden
	? UILayoutPriorityDefaultLow
	: UILayoutPriorityRequired
	forAxis:UILayoutConstraintAxisHorizontal];
	self.managementIconTrailingMarginConstraint.constant =
	self.managementIconView.hidden ? 0.
	: -style->managementIconTrailingMargin;
	for (NSLayoutConstraint* constraint in self.topConstraints) {
	constraint.constant = style->minimumTopMargin;
	}
	for (NSLayoutConstraint* constraint in self.bottomConstraints) {
	constraint.constant = style->minimumBottomMargin;
	}
	self.titleConstraintForNameAndEmail.constant = style->titleOffset;
	}

	@end