[Payment Request] Displays Contact Info in the payment summary view

ios/chrome/browser/payments/cells/autofill_profile_item.mm

-// Copyright 2016 The Chromium Authors. All rights reserved.
+// Copyright 2017 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 "ios/chrome/browser/payments/cells/shipping_address_item.h"
+#import "ios/chrome/browser/payments/cells/autofill_profile_item.h"
 
-#import "ios/third_party/material_components_ios/src/components/Palettes/src/MaterialPalettes.h"
+#import "ios/chrome/browser/ui/colors/MDCPalette+CrAdditions.h"
+#import "ios/chrome/browser/ui/uikit_ui_util.h"
 #import "ios/third_party/material_components_ios/src/components/Typography/src/MaterialTypography.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 namespace {
 // Padding of the leading and trailing edges of the cell.
 const CGFloat kHorizontalPadding = 16;
 
 // Padding of the top and bottom edges of the cell.
 const CGFloat kVerticalPadding = 16;
 
 // Spacing between the labels.
 const CGFloat kVerticalSpacingBetweenLabels = 8;
 }  // namespace
 
-@implementation ShippingAddressItem
+@implementation AutofillProfileItem
 
 @synthesize name = _name;
 @synthesize address = _address;
 @synthesize phoneNumber = _phoneNumber;
+@synthesize email = _email;
+@synthesize notification = _notification;
 @synthesize accessoryType = _accessoryType;
 
 #pragma mark CollectionViewItem
 
 - (instancetype)initWithType:(NSInteger)type {
   self = [super initWithType:type];
   if (self) {
-    self.cellClass = [ShippingAddressCell class];
+    self.cellClass = [AutofillProfileCell class];
   }
   return self;
 }
 
-- (void)configureCell:(ShippingAddressCell*)cell {
+- (void)configureCell:(AutofillProfileCell*)cell {
   [super configureCell:cell];
   cell.accessoryType = self.accessoryType;
   cell.nameLabel.text = self.name;
   cell.addressLabel.text = self.address;
   cell.phoneNumberLabel.text = self.phoneNumber;
+  cell.emailLabel.text = self.email;
+  cell.notificationLabel.text = self.notification;
 }
 
 @end
 
-@implementation ShippingAddressCell
+@implementation AutofillProfileCell {
+  UIStackView* _stackView;
+}
 
 @synthesize nameLabel = _nameLabel;
 @synthesize addressLabel = _addressLabel;
 @synthesize phoneNumberLabel = _phoneNumberLabel;
+@synthesize emailLabel = _emailLabel;
+@synthesize notificationLabel = _notificationLabel;
 
 - (instancetype)initWithFrame:(CGRect)frame {
   self = [super initWithFrame:frame];
   if (self) {
     self.isAccessibilityElement = YES;
     [self addSubviews];
     [self setDefaultViewStyling];
     [self setViewConstraints];
   }
   return self;
 }
 
 // Create and add subviews.
 - (void)addSubviews {
   UIView* contentView = self.contentView;
   contentView.clipsToBounds = YES;
 
+  _stackView = [[UIStackView alloc] initWithArrangedSubviews:@[]];
+  _stackView.axis = UILayoutConstraintAxisVertical;
+  _stackView.layoutMarginsRelativeArrangement = YES;
+  _stackView.layoutMargins =
+      UIEdgeInsetsMake(kVerticalPadding, kHorizontalPadding, kVerticalPadding,
+                       kHorizontalPadding);
+  _stackView.alignment = UIStackViewAlignmentLeading;
+  _stackView.spacing = kVerticalSpacingBetweenLabels;
+  _stackView.translatesAutoresizingMaskIntoConstraints = NO;
+  [contentView addSubview:_stackView];
+
   _nameLabel = [[UILabel alloc] init];
-  _nameLabel.translatesAutoresizingMaskIntoConstraints = NO;
-  [contentView addSubview:_nameLabel];
+  [_stackView addArrangedSubview:_nameLabel];
 
   _addressLabel = [[UILabel alloc] init];
-  _addressLabel.translatesAutoresizingMaskIntoConstraints = NO;
-  [contentView addSubview:_addressLabel];
+  [_stackView addArrangedSubview:_addressLabel];
 
   _phoneNumberLabel = [[UILabel alloc] init];
-  _phoneNumberLabel.translatesAutoresizingMaskIntoConstraints = NO;
-  [contentView addSubview:_phoneNumberLabel];
+  [_stackView addArrangedSubview:_phoneNumberLabel];
+
+  _emailLabel = [[UILabel alloc] init];
+  [_stackView addArrangedSubview:_emailLabel];
+
+  _notificationLabel = [[UILabel alloc] init];
+  [_stackView addArrangedSubview:_notificationLabel];
 }
 
 // Set default font and text colors for labels.
 - (void)setDefaultViewStyling {
   _nameLabel.font = [MDCTypography body2Font];
   _nameLabel.textColor = [[MDCPalette greyPalette] tint900];
   _nameLabel.numberOfLines = 0;
   _nameLabel.lineBreakMode = NSLineBreakByWordWrapping;
 
   _addressLabel.font = [MDCTypography body1Font];
   _addressLabel.textColor = [[MDCPalette greyPalette] tint900];
   _addressLabel.numberOfLines = 0;
   _addressLabel.lineBreakMode = NSLineBreakByWordWrapping;
 
   _phoneNumberLabel.font = [MDCTypography body1Font];
   _phoneNumberLabel.textColor = [[MDCPalette greyPalette] tint900];
+
+  _emailLabel.font = [MDCTypography body1Font];
+  _emailLabel.textColor = [[MDCPalette greyPalette] tint900];
+
+  _notificationLabel.font = [MDCTypography body1Font];
+  _notificationLabel.textColor = [[MDCPalette cr_bluePalette] tint500];
 }
 
 // Set constraints on subviews.
 - (void)setViewConstraints {
-  UIView* contentView = self.contentView;
-
-  [NSLayoutConstraint activateConstraints:@[
-    // Set leading anchors.
-    [_nameLabel.leadingAnchor constraintEqualToAnchor:contentView.leadingAnchor
-                                             constant:kHorizontalPadding],
-    [_addressLabel.leadingAnchor
-        constraintEqualToAnchor:_nameLabel.leadingAnchor],
-    [_phoneNumberLabel.leadingAnchor
-        constraintEqualToAnchor:_addressLabel.leadingAnchor],
-
-    // Set vertical anchors.
-    [_nameLabel.topAnchor constraintEqualToAnchor:contentView.topAnchor
-                                         constant:kVerticalPadding],
-    [_addressLabel.topAnchor
-        constraintEqualToAnchor:_nameLabel.bottomAnchor
-                       constant:kVerticalSpacingBetweenLabels],
-    [_addressLabel.bottomAnchor
-        constraintEqualToAnchor:_phoneNumberLabel.topAnchor
-                       constant:-kVerticalSpacingBetweenLabels],
-    [_phoneNumberLabel.bottomAnchor
-        constraintEqualToAnchor:contentView.bottomAnchor
-                       constant:-kVerticalPadding],
-
-    // Set trailing anchors.
-    [_nameLabel.trailingAnchor
-        constraintLessThanOrEqualToAnchor:contentView.trailingAnchor
-                                 constant:-kHorizontalPadding],
-    [_addressLabel.trailingAnchor
-        constraintLessThanOrEqualToAnchor:_nameLabel.trailingAnchor],
-    [_phoneNumberLabel.trailingAnchor
-        constraintLessThanOrEqualToAnchor:_addressLabel.trailingAnchor],
-  ]];
+  AddSameSizeConstraint(self.contentView, _stackView);
 }
 
 #pragma mark - UIView
 
 // Implement -layoutSubviews as per instructions in documentation for
 // +[MDCCollectionViewCell cr_preferredHeightForWidth:forItem:].
 - (void)layoutSubviews {
+  _nameLabel.hidden = !_nameLabel.text;
+  _addressLabel.hidden = !_addressLabel.text;
+  _phoneNumberLabel.hidden = !_phoneNumberLabel.text;
+  _emailLabel.hidden = !_emailLabel.text;
+  _notificationLabel.hidden = !_notificationLabel.text;
+
   // When the accessory type is None, the content view of the cell (and thus)
   // the labels inside it span larger than when there is a Checkmark accessory
   // type. That means that toggling the accessory type can induce a rewrapping
   // of the texts, which is not visually pleasing. To alleviate that issue
   // always lay out the cell as if there was a Checkmark accessory type.
   //
   // Force the accessory type to Checkmark for the duration of layout.
   MDCCollectionViewCellAccessoryType realAccessoryType = self.accessoryType;
   self.accessoryType = MDCCollectionViewCellAccessoryCheckmark;
 
   [super layoutSubviews];
 
-  // Adjust labels' preferredMaxLayoutWidth when the parent's width changes, for
-  // instance on screen rotation.
+  // Adjust preferredMaxLayoutWidth of _nameLabel and _addressLabel when the
+  // parent's width changes, for instance on screen rotation.
   CGFloat parentWidth = CGRectGetWidth(self.contentView.frame);
   CGFloat preferredMaxLayoutWidth = parentWidth - (2 * kHorizontalPadding);
   _nameLabel.preferredMaxLayoutWidth = preferredMaxLayoutWidth;
   _addressLabel.preferredMaxLayoutWidth = preferredMaxLayoutWidth;
-  _phoneNumberLabel.preferredMaxLayoutWidth = preferredMaxLayoutWidth;
 
   // Re-layout with the new preferred width to allow the label to adjust its
   // height.
   [super layoutSubviews];
 
   // Restore the real accessory type at the end of the layout.
   self.accessoryType = realAccessoryType;
 }
 
 #pragma mark - UICollectionReusableView
 
 - (void)prepareForReuse {
   [super prepareForReuse];
   self.nameLabel.text = nil;
   self.addressLabel.text = nil;
   self.phoneNumberLabel.text = nil;
+  self.emailLabel.text = nil;
+  self.notificationLabel.text = nil;
   self.accessoryType = MDCCollectionViewCellAccessoryNone;
 }
 
 #pragma mark - NSObject(Accessibility)
 
 - (NSString*)accessibilityLabel {
-  return [NSString stringWithFormat:@"%@, %@, %@", self.nameLabel.text,
-                                    self.addressLabel.text,
-                                    self.phoneNumberLabel.text];
+  return [NSString
+      stringWithFormat:@"%@, %@, %@, %@, %@", self.nameLabel.text,
+                       self.addressLabel.text, self.phoneNumberLabel.text,
+                       self.emailLabel.text, self.notificationLabel.text];
 }
 
 @end