Upstream Chrome on iOS source code [7/11].

ios/chrome/browser/ui/settings/cells/autofill_data_item.mm

+// Copyright 2016 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/ui/settings/cells/autofill_data_item.h"
+
+#import "ios/third_party/material_components_ios/src/components/Palettes/src/MaterialPalettes.h"
+#import "ios/third_party/material_roboto_font_loader_ios/src/src/MaterialRobotoFontLoader.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+namespace {
+// Padding used on the leading and trailing edges of the cell.
+const CGFloat kHorizontalPadding = 16;
+// Padding used on the top and bottom edges of the cell.
+const CGFloat kVerticalPadding = 16;
+}
+
+@implementation AutofillDataItem
+
+@synthesize deletable = _deletable;
+@synthesize GUID = _GUID;
+@synthesize text = _text;
+@synthesize leadingDetailText = _leadingDetailText;
+@synthesize trailingDetailText = _trailingDetailText;
+@synthesize accessoryType = _accessoryType;
+
+- (instancetype)initWithType:(NSInteger)type {
+  self = [super initWithType:type];
+  if (self) {
+    self.cellClass = [AutofillDataCell class];
+  }
+  return self;
+}
+
+#pragma mark - CollectionViewItem
+
+- (void)configureCell:(AutofillDataCell*)cell {
+  [super configureCell:cell];
+  cell.textLabel.text = self.text;
+  cell.leadingDetailTextLabel.text = self.leadingDetailText;
+  cell.trailingDetailTextLabel.text = self.trailingDetailText;
+  cell.accessoryType = self.accessoryType;
+}
+
+@end
+
+@implementation AutofillDataCell {
+  NSLayoutConstraint* _textLabelWidthConstraint;
+}
+
+@synthesize textLabel = _textLabel;
+@synthesize leadingDetailTextLabel = _leadingDetailTextLabel;
+@synthesize trailingDetailTextLabel = _trailingDetailTextLabel;
+
+- (instancetype)initWithFrame:(CGRect)frame {
+  self = [super initWithFrame:frame];
+  if (self) {
+    self.isAccessibilityElement = YES;
+    [self addSubviews];
+    [self setDefaultViewStyling];
+    [self setViewConstraints];
+  }
+  return self;
+}
+
+// Creates and adds subviews.
+- (void)addSubviews {
+  UIView* contentView = self.contentView;
+
+  _textLabel = [[UILabel alloc] init];
+  _textLabel.translatesAutoresizingMaskIntoConstraints = NO;
+  [contentView addSubview:_textLabel];
+
+  _leadingDetailTextLabel = [[UILabel alloc] init];
+  _leadingDetailTextLabel.translatesAutoresizingMaskIntoConstraints = NO;
+  [contentView addSubview:_leadingDetailTextLabel];
+
+  _trailingDetailTextLabel = [[UILabel alloc] init];
+  _trailingDetailTextLabel.translatesAutoresizingMaskIntoConstraints = NO;
+  [contentView addSubview:_trailingDetailTextLabel];
+}
+
+// Sets default font and text colors for labels.
+- (void)setDefaultViewStyling {
+  _textLabel.font = [[MDFRobotoFontLoader sharedInstance] mediumFontOfSize:14];
+  _textLabel.textColor = [[MDCPalette greyPalette] tint900];
+  _textLabel.numberOfLines = 0;
+  _textLabel.lineBreakMode = NSLineBreakByWordWrapping;
+
+  _leadingDetailTextLabel.font =
+      [[MDFRobotoFontLoader sharedInstance] regularFontOfSize:14];
+  _leadingDetailTextLabel.textColor = [[MDCPalette greyPalette] tint500];
+  _leadingDetailTextLabel.numberOfLines = 0;
+  _leadingDetailTextLabel.lineBreakMode = NSLineBreakByWordWrapping;
+
+  _trailingDetailTextLabel.font =
+      [[MDFRobotoFontLoader sharedInstance] regularFontOfSize:12];
+  _trailingDetailTextLabel.textColor = [[MDCPalette greyPalette] tint500];
+}
+
+// Sets constraints on subviews.
+- (void)setViewConstraints {
+  UIView* contentView = self.contentView;
+
+  // Set up the width constraint for the text label. It is activated here
+  // and updated in layoutSubviews.
+  _textLabelWidthConstraint =
+      [_textLabel.widthAnchor constraintEqualToConstant:0];
+
+  [NSLayoutConstraint activateConstraints:@[
+    // Set horizontal anchors.
+    [_textLabel.leadingAnchor constraintEqualToAnchor:contentView.leadingAnchor
+                                             constant:kHorizontalPadding],
+    [_leadingDetailTextLabel.leadingAnchor
+        constraintEqualToAnchor:_textLabel.leadingAnchor],
+    [_trailingDetailTextLabel.trailingAnchor
+        constraintEqualToAnchor:contentView.trailingAnchor
+                       constant:-kHorizontalPadding],
+
+    // Set width anchors.
+    [_leadingDetailTextLabel.widthAnchor
+        constraintEqualToAnchor:_textLabel.widthAnchor],
+    _textLabelWidthConstraint,
+
+    // Set vertical anchors.
+    [_textLabel.topAnchor constraintEqualToAnchor:contentView.topAnchor
+                                         constant:kVerticalPadding],
+    [_leadingDetailTextLabel.topAnchor
+        constraintEqualToAnchor:_textLabel.bottomAnchor],
+    [_leadingDetailTextLabel.bottomAnchor
+        constraintEqualToAnchor:contentView.bottomAnchor
+                       constant:-kVerticalPadding],
+    [_trailingDetailTextLabel.centerYAnchor
+        constraintEqualToAnchor:contentView.centerYAnchor],
+  ]];
+}
+
+// Implement -layoutSubviews as per instructions in documentation for
+// +[MDCCollectionViewCell cr_preferredHeightForWidth:forItem:].
+- (void)layoutSubviews {
+  [super layoutSubviews];
+
+  // Size the trailing detail label to determine how much width it wants.
+  [self.trailingDetailTextLabel sizeToFit];
+
+  // Update the text label's width constraint.
+  CGFloat availableWidth =
+      CGRectGetWidth(self.contentView.bounds) - (3 * kHorizontalPadding);
+  CGFloat trailingDetailLabelWidth =
+      CGRectGetWidth(self.trailingDetailTextLabel.frame);
+  _textLabelWidthConstraint.constant =
+      availableWidth - trailingDetailLabelWidth;
+
+  [super layoutSubviews];
+}
+
+#pragma mark - UICollectionReusableView
+
+- (void)prepareForReuse {
+  [super prepareForReuse];
+  self.textLabel.text = nil;
+  self.leadingDetailTextLabel.text = nil;
+  self.trailingDetailTextLabel.text = nil;
+  self.accessoryType = MDCCollectionViewCellAccessoryNone;
+}
+
+#pragma mark - NSObject(Accessibility)
+
+- (NSString*)accessibilityLabel {
+  if (self.trailingDetailTextLabel.text) {
+    return [NSString stringWithFormat:@"%@, %@, %@", self.textLabel.text,
+                                      self.leadingDetailTextLabel.text,
+                                      self.trailingDetailTextLabel.text];
+  }
+  return [NSString stringWithFormat:@"%@, %@", self.textLabel.text,
+                                    self.leadingDetailTextLabel.text];
+}
+
+@end