Upstream Chrome on iOS source code [3/11].

ios/chrome/browser/ui/bookmarks/cells/bookmark_parent_folder_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/bookmarks/cells/bookmark_parent_folder_item.h"
+
+#import "ios/chrome/browser/ui/bookmarks/bookmark_utils_ios.h"
+#import "ios/chrome/browser/ui/icons/chrome_icon.h"
+#import "ios/chrome/browser/ui/uikit_ui_util.h"
+#include "ios/chrome/grit/ios_strings.h"
+#import "ios/third_party/material_roboto_font_loader_ios/src/src/MaterialRobotoFontLoader.h"
+#include "ui/base/l10n/l10n_util_mac.h"
+
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
+@interface BookmarkParentFolderCell ()
+@property(nonatomic, readwrite, strong) UILabel* parentFolderNameLabel;
+@property(nonatomic, strong) UILabel* decorationLabel;
+@end
+
+@implementation BookmarkParentFolderItem
+
+@synthesize title = _title;
+
+- (instancetype)initWithType:(NSInteger)type {
+  self = [super initWithType:type];
+  if (self) {
+    self.accessibilityIdentifier = @"Change Folder";
+    self.cellClass = [BookmarkParentFolderCell class];
+  }
+  return self;
+}
+
+#pragma mark CollectionViewItem
+
+- (void)configureCell:(BookmarkParentFolderCell*)cell {
+  [super configureCell:cell];
+  cell.parentFolderNameLabel.text = self.title;
+}
+
+@end
+
+@implementation BookmarkParentFolderCell
+
+@synthesize parentFolderNameLabel = _parentFolderNameLabel;
+@synthesize decorationLabel = _decorationLabel;
+
+- (instancetype)initWithFrame:(CGRect)frame {
+  self = [super initWithFrame:frame];
+  if (!self)
+    return nil;
+
+  self.isAccessibilityElement = YES;
+  self.accessibilityTraits |= UIAccessibilityTraitButton;
+
+  const CGFloat kHorizontalPadding = 15;
+  const CGFloat kVerticalPadding = 8;
+  const CGFloat kParentFolderLabelTopPadding = 7;
+
+  _decorationLabel = [[UILabel alloc] init];
+  _decorationLabel.translatesAutoresizingMaskIntoConstraints = NO;
+  _decorationLabel.text = l10n_util::GetNSString(IDS_IOS_BOOKMARK_GROUP_BUTTON);
+  _decorationLabel.font =
+      [[MDFRobotoFontLoader sharedInstance] regularFontOfSize:12];
+  _decorationLabel.textColor = bookmark_utils_ios::lightTextColor();
+  [self.contentView addSubview:_decorationLabel];
+
+  _parentFolderNameLabel = [[UILabel alloc] init];
+  _parentFolderNameLabel.translatesAutoresizingMaskIntoConstraints = NO;
+  _parentFolderNameLabel.font =
+      [[MDFRobotoFontLoader sharedInstance] regularFontOfSize:16];
+  _parentFolderNameLabel.textColor =
+      [UIColor colorWithWhite:33.0 / 255.0 alpha:1.0];
+  _parentFolderNameLabel.textAlignment = NSTextAlignmentNatural;
+  [self.contentView addSubview:_parentFolderNameLabel];
+
+  UIImageView* navigationChevronImage = [[UIImageView alloc] init];
+  UIImage* image = TintImage([ChromeIcon chevronIcon], [UIColor grayColor]);
+  navigationChevronImage.image = image;
+  navigationChevronImage.translatesAutoresizingMaskIntoConstraints = NO;
+  [self.contentView addSubview:navigationChevronImage];
+
+  // Set up the constraints.
+  [NSLayoutConstraint activateConstraints:@[
+    [_decorationLabel.topAnchor constraintEqualToAnchor:self.topAnchor
+                                               constant:kVerticalPadding],
+    [_decorationLabel.leadingAnchor constraintEqualToAnchor:self.leadingAnchor
+                                                   constant:kHorizontalPadding],
+    [_parentFolderNameLabel.topAnchor
+        constraintEqualToAnchor:_decorationLabel.bottomAnchor
+                       constant:kParentFolderLabelTopPadding],
+    [_parentFolderNameLabel.leadingAnchor
+        constraintEqualToAnchor:_decorationLabel.leadingAnchor],
+    [navigationChevronImage.centerYAnchor
+        constraintEqualToAnchor:_parentFolderNameLabel.centerYAnchor],
+    [navigationChevronImage.leadingAnchor
+        constraintEqualToAnchor:_parentFolderNameLabel.trailingAnchor],
+    [navigationChevronImage.widthAnchor
+        constraintEqualToConstant:navigationChevronImage.image.size.width],
+    [navigationChevronImage.trailingAnchor
+        constraintEqualToAnchor:self.trailingAnchor
+                       constant:-kHorizontalPadding],
+  ]];
+
+  self.shouldHideSeparator = YES;
+  return self;
+}
+
+- (void)prepareForReuse {
+  [super prepareForReuse];
+  self.parentFolderNameLabel.text = nil;
+}
+
+- (NSString*)accessibilityLabel {
+  return self.parentFolderNameLabel.text;
+}
+
+- (NSString*)accessibilityHint {
+  return l10n_util::GetNSString(
+      IDS_IOS_BOOKMARK_EDIT_PARENT_FOLDER_BUTTON_HINT);
+}
+
+@end