Move the ContentSuggestions items to a new target

ios/chrome/browser/ui/content_suggestions/cells/content_suggestions_item.mm

 // 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/ui/content_suggestions/cells/content_suggestions_item.h"
 
 #include "base/time/time.h"
-#import "ios/chrome/browser/ui/colors/MDCPalette+CrAdditions.h"
+#import "ios/chrome/browser/ui/content_suggestions/cells/content_suggestions_cell.h"
 #import "ios/chrome/browser/ui/content_suggestions/identifier/content_suggestion_identifier.h"
 #import "ios/chrome/browser/ui/favicon/favicon_attributes.h"
 #import "ios/chrome/browser/ui/favicon/favicon_view.h"
-#import "ios/chrome/browser/ui/uikit_ui_util.h"
-#import "ios/chrome/browser/ui/util/i18n_string.h"
-#import "ios/third_party/material_components_ios/src/components/Palettes/src/MaterialPalettes.h"
-#import "ios/third_party/material_components_ios/src/components/Typography/src/MaterialTypography.h"
 #include "url/gurl.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
-namespace {
-const CGFloat kImageSize = 72;
-const CGFloat kStandardSpacing = 16;
-const CGFloat kSmallSpacing = 8;
-
-// Name of the icon displayed when a suggestion is available offline.
-NSString* const kOfflineIconName = @"content_suggestions_offline";
-// Size of the icon displayed when a suggestion is available offline.
-const CGFloat kOfflineIconSize = 24;
-
-// Size of the favicon view.
-const CGFloat kFaviconSize = 16;
-// Size of the icon displayed when there is not image but one should be
-// displayed.
-const CGFloat kIconSize = 24;
-// Name of the icon displayed when there is not image but one should be
-// displayed.
-NSString* const kNoImageIconName = @"content_suggestions_no_image";
-// No image icon percentage of white.
-const CGFloat kNoImageIconWhite = 0.38;
-// No image background percentage of white.
-const CGFloat kNoImageBackgroundWhite = 0.95;
-// Duration of the animation to display the image.
-const CGFloat kAnimationDuration = 0.3;
-}
-
 @interface ContentSuggestionsItem ()
 
 @property(nonatomic, copy) NSString* subtitle;
 // Used to check if the image has already been fetched. There is no way to
 // discriminate between failed image download and nonexitent image. The
 // suggestion tries to download the image only once.
 @property(nonatomic, assign) BOOL imageFetched;
 
 @end
 
@@ skipping 33 matching lines @@
   if (self.hasImage && !self.imageFetched) {
     self.imageFetched = YES;
     // Fetch the image. During the fetch the cell's image should still be set.
     [self.delegate loadImageForSuggestedItem:self];
   }
   [cell.faviconView configureWithAttributes:self.attributes];
   cell.titleLabel.text = self.title;
   [cell setSubtitleText:self.subtitle];
   cell.displayImage = self.hasImage;
   [cell setContentImage:self.image];
+  NSDate* date =
+      [NSDate dateWithTimeIntervalSince1970:self.publishDate.ToDoubleT()];
   [cell setAdditionalInformationWithPublisherName:self.publisher
-                                             date:self.publishDate
+                                             date:date
                               offlineAvailability:self.availableOffline];
 }
 
 @end
-
-#pragma mark - ContentSuggestionsCell
-
-@interface ContentSuggestionsCell ()
-
-@property(nonatomic, strong) UILabel* additionalInformationLabel;
-// Contains the no-image icon or the image.
-@property(nonatomic, strong) UIView* imageContainer;
-// The no-image icon displayed when there is no image.
-@property(nonatomic, strong) UIImageView* noImageIcon;
-// Displays the image associated with this suggestion. It is added to the
-// imageContainer only if there is an image to display, hiding the no-image
-// icon.
-@property(nonatomic, strong) UIImageView* contentImageView;
-// Constraint for the size of the image.
-@property(nonatomic, strong) NSLayoutConstraint* imageSize;
-// Constraint for the distance between the texts and the image.
-@property(nonatomic, strong) NSLayoutConstraint* imageTitleSpacing;
-// Constraint for the vertical distance between the title and the subtitle.
-@property(nonatomic, strong) NSLayoutConstraint* titleSubtitleSpacing;
-// Label for the subtitle.
-@property(nonatomic, readonly, strong) UILabel* subtitleLabel;
-
-// Applies the constraints on the elements. Called in the init.
-- (void)applyConstraints;
-
-@end
-
-@implementation ContentSuggestionsCell
-
-@synthesize titleLabel = _titleLabel;
-@synthesize subtitleLabel = _subtitleLabel;
-@synthesize imageContainer = _imageContainer;
-@synthesize noImageIcon = _noImageIcon;
-@synthesize additionalInformationLabel = _additionalInformationLabel;
-@synthesize contentImageView = _contentImageView;
-@synthesize faviconView = _faviconView;
-@synthesize imageSize = _imageSize;
-@synthesize imageTitleSpacing = _imageTitleSpacing;
-@synthesize displayImage = _displayImage;
-@synthesize titleSubtitleSpacing = _titleSubtitleSpacing;
-
-- (instancetype)initWithFrame:(CGRect)frame {
-  self = [super initWithFrame:frame];
-  if (self) {
-    _titleLabel = [[UILabel alloc] initWithFrame:CGRectZero];
-    _subtitleLabel = [[UILabel alloc] initWithFrame:CGRectZero];
-    _imageContainer = [[UIView alloc] initWithFrame:CGRectZero];
-    _noImageIcon = [[UIImageView alloc] initWithFrame:CGRectZero];
-    _additionalInformationLabel = [[UILabel alloc] initWithFrame:CGRectZero];
-    _contentImageView = [[UIImageView alloc] initWithFrame:CGRectZero];
-    _faviconView = [[FaviconViewNew alloc] init];
-
-    _titleLabel.numberOfLines = 2;
-    _subtitleLabel.numberOfLines = 2;
-    [_subtitleLabel setContentHuggingPriority:UILayoutPriorityDefaultHigh
-                                      forAxis:UILayoutConstraintAxisVertical];
-    [_titleLabel setContentHuggingPriority:UILayoutPriorityDefaultHigh
-                                   forAxis:UILayoutConstraintAxisVertical];
-
-    _contentImageView.contentMode = UIViewContentModeScaleAspectFill;
-    _contentImageView.clipsToBounds = YES;
-    _contentImageView.hidden = YES;
-
-    _imageContainer.translatesAutoresizingMaskIntoConstraints = NO;
-    _noImageIcon.translatesAutoresizingMaskIntoConstraints = NO;
-    _titleLabel.translatesAutoresizingMaskIntoConstraints = NO;
-    _subtitleLabel.translatesAutoresizingMaskIntoConstraints = NO;
-    _additionalInformationLabel.translatesAutoresizingMaskIntoConstraints = NO;
-    _contentImageView.translatesAutoresizingMaskIntoConstraints = NO;
-    _faviconView.translatesAutoresizingMaskIntoConstraints = NO;
-
-    [self.contentView addSubview:_imageContainer];
-    [self.contentView addSubview:_titleLabel];
-    [self.contentView addSubview:_subtitleLabel];
-    [self.contentView addSubview:_additionalInformationLabel];
-    [self.contentView addSubview:_faviconView];
-
-    [_imageContainer addSubview:_noImageIcon];
-    [_imageContainer addSubview:_contentImageView];
-
-    _imageContainer.backgroundColor =
-        [UIColor colorWithWhite:kNoImageBackgroundWhite alpha:1];
-    _noImageIcon.image = [[UIImage imageNamed:kNoImageIconName]
-        imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
-    [_noImageIcon
-        setTintColor:[UIColor colorWithWhite:kNoImageIconWhite alpha:1]];
-
-    _titleLabel.font = [MDCTypography subheadFont];
-    _subtitleLabel.font = [MDCTypography body1Font];
-    _additionalInformationLabel.font = [MDCTypography captionFont];
-    _faviconView.font = [[MDCTypography fontLoader] mediumFontOfSize:10];
-
-    _subtitleLabel.textColor = [[MDCPalette greyPalette] tint700];
-    _additionalInformationLabel.textColor = [[MDCPalette greyPalette] tint700];
-
-    [self applyConstraints];
-  }
-  return self;
-}
-
-- (void)setContentImage:(UIImage*)image {
-  if (!image) {
-    self.contentImageView.hidden = YES;
-    return;
-  }
-
-  self.contentImageView.image = image;
-
-  self.contentImageView.alpha = 0;
-  self.contentImageView.hidden = NO;
-
-  [UIView animateWithDuration:kAnimationDuration
-                   animations:^{
-                     self.contentImageView.alpha = 1;
-                   }];
-}
-
-- (void)setAdditionalInformationWithPublisherName:(NSString*)publisherName
-                                             date:(base::Time)publishDate
-                              offlineAvailability:(BOOL)availableOffline {
-  NSDate* date = [NSDate dateWithTimeIntervalSince1970:publishDate.ToDoubleT()];
-  NSString* dateString =
-      [NSDateFormatter localizedStringFromDate:date
-                                     dateStyle:NSDateFormatterMediumStyle
-                                     timeStyle:NSDateFormatterNoStyle];
-
-  NSString* publisherString = AdjustStringForLocaleDirection(
-      [NSString stringWithFormat:@"%@ - %@ ", publisherName, dateString]);
-
-  NSMutableAttributedString* additionInformation =
-      [[NSMutableAttributedString alloc] initWithString:publisherString
-                                             attributes:nil];
-
-  if (availableOffline) {
-    NSTextAttachment* offlineIcon = [[NSTextAttachment alloc] init];
-    offlineIcon.image = [[UIImage imageNamed:kOfflineIconName]
-        imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
-    offlineIcon.bounds = CGRectMake(
-        0, (_additionalInformationLabel.font.xHeight - kOfflineIconSize) / 2,
-        kOfflineIconSize, kOfflineIconSize);
-
-    [additionInformation
-        appendAttributedString:[NSAttributedString
-                                   attributedStringWithAttachment:offlineIcon]];
-  }
-
-  self.additionalInformationLabel.attributedText = additionInformation;
-}
-
-- (void)setSubtitleText:(NSString*)subtitle {
-  self.subtitleLabel.text = subtitle;
-  if (subtitle.length > 0) {
-    self.titleSubtitleSpacing.constant = kSmallSpacing;
-  } else {
-    self.titleSubtitleSpacing.constant = 0;
-  }
-}
-
-- (void)setDisplayImage:(BOOL)displayImage {
-  if (displayImage) {
-    self.imageTitleSpacing.constant = kStandardSpacing;
-    self.imageSize.constant = kImageSize;
-    self.imageContainer.hidden = NO;
-  } else {
-    self.imageTitleSpacing.constant = 0;
-    self.imageSize.constant = 0;
-    self.imageContainer.hidden = YES;
-  }
-  _displayImage = displayImage;
-}
-
-#pragma mark - UICollectionViewCell
-
-- (void)prepareForReuse {
-  self.contentImageView.hidden = YES;
-}
-
-#pragma mark - UIView
-
-// Implements -layoutSubviews as per instructions in documentation for
-// +[MDCCollectionViewCell cr_preferredHeightForWidth:forItem:].
-- (void)layoutSubviews {
-  [super layoutSubviews];
-
-  // Adjust the text label preferredMaxLayoutWidth when the parent's width
-  // changes, for instance on screen rotation.
-  CGFloat parentWidth = CGRectGetWidth(self.contentView.bounds);
-
-  CGFloat offset = 0;
-  if (self.displayImage) {
-    offset = kImageSize + kStandardSpacing;
-  }
-
-  self.titleLabel.preferredMaxLayoutWidth =
-      parentWidth - 2 * kStandardSpacing - offset;
-  self.subtitleLabel.preferredMaxLayoutWidth =
-      parentWidth - 2 * kStandardSpacing - offset;
-  self.additionalInformationLabel.preferredMaxLayoutWidth =
-      parentWidth - kFaviconSize - kSmallSpacing - 2 * kStandardSpacing;
-
-  // Re-layout with the new preferred width to allow the label to adjust its
-  // height.
-  [super layoutSubviews];
-}
-
-#pragma mark - Private
-
-- (void)applyConstraints {
-  _imageSize =
-      [_imageContainer.heightAnchor constraintEqualToConstant:kImageSize];
-  _imageTitleSpacing = [_imageContainer.leadingAnchor
-      constraintEqualToAnchor:_titleLabel.trailingAnchor
-                     constant:kStandardSpacing];
-  _titleSubtitleSpacing =
-      [_subtitleLabel.topAnchor constraintEqualToAnchor:_titleLabel.bottomAnchor
-                                               constant:kSmallSpacing];
-
-  [NSLayoutConstraint activateConstraints:@[
-    // Image.
-    _imageSize,
-    [_imageContainer.widthAnchor
-        constraintEqualToAnchor:_imageContainer.heightAnchor],
-    [_imageContainer.topAnchor constraintEqualToAnchor:_titleLabel.topAnchor],
-
-    // Text.
-    _imageTitleSpacing, _titleSubtitleSpacing,
-    [_titleLabel.trailingAnchor
-        constraintEqualToAnchor:_subtitleLabel.trailingAnchor],
-
-    // Additional Information.
-    [_additionalInformationLabel.topAnchor
-        constraintGreaterThanOrEqualToAnchor:_imageContainer.bottomAnchor
-                                    constant:kStandardSpacing],
-    [_additionalInformationLabel.topAnchor
-        constraintGreaterThanOrEqualToAnchor:_subtitleLabel.bottomAnchor
-                                    constant:kStandardSpacing],
-    [_additionalInformationLabel.bottomAnchor
-        constraintLessThanOrEqualToAnchor:self.contentView.bottomAnchor
-                                 constant:-kStandardSpacing],
-
-    // Favicon.
-    [_faviconView.topAnchor
-        constraintGreaterThanOrEqualToAnchor:_imageContainer.bottomAnchor
-                                    constant:kStandardSpacing],
-    [_faviconView.topAnchor
-        constraintGreaterThanOrEqualToAnchor:_subtitleLabel.bottomAnchor
-                                    constant:kStandardSpacing],
-    [_faviconView.centerYAnchor
-        constraintEqualToAnchor:_additionalInformationLabel.centerYAnchor],
-    [_faviconView.bottomAnchor
-        constraintLessThanOrEqualToAnchor:self.contentView.bottomAnchor
-                                 constant:-kStandardSpacing],
-    [_faviconView.heightAnchor constraintEqualToConstant:kFaviconSize],
-    [_faviconView.widthAnchor
-        constraintEqualToAnchor:_faviconView.heightAnchor],
-
-    // No image icon.
-    [_noImageIcon.centerXAnchor
-        constraintEqualToAnchor:_imageContainer.centerXAnchor],
-    [_noImageIcon.centerYAnchor
-        constraintEqualToAnchor:_imageContainer.centerYAnchor],
-    [_noImageIcon.widthAnchor constraintEqualToConstant:kIconSize],
-    [_noImageIcon.heightAnchor constraintEqualToAnchor:_noImageIcon.widthAnchor]
-  ]];
-
-  AddSameConstraints(_contentImageView, _imageContainer);
-
-  ApplyVisualConstraintsWithMetrics(
-      @[
-        @"H:|-(space)-[title]",
-        @"H:[image]-(space)-|",
-        @"H:|-(space)-[text]",
-        @"V:|-(space)-[title]",
-        @"H:|-(space)-[favicon]-(small)-[additional]-(space)-|",
-      ],
-      @{
-        @"image" : _imageContainer,
-        @"title" : _titleLabel,
-        @"text" : _subtitleLabel,
-        @"additional" : _additionalInformationLabel,
-        @"favicon" : _faviconView,
-      },
-      @{ @"space" : @(kStandardSpacing),
-         @"small" : @(kSmallSpacing) });
-}
-
-@end