Suggestions UI - Add Data Source and Item

ios/chrome/browser/ui/suggestions/suggestions_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/suggestions/suggestions_item.h"
+
+#import "ios/chrome/browser/ui/suggestions/suggestions_item_actions.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
+
+@interface SuggestionsItem ()
+
+@property(nonatomic, copy) NSString* title;
+@property(nonatomic, copy) NSString* subtitle;
+
+@end
+
+@implementation SuggestionsItem
+
+@synthesize title = _title;
+@synthesize subtitle = _subtitle;
+
+- (instancetype)initWithType:(NSInteger)type
+                       title:(NSString*)title
+                    subtitle:(NSString*)subtitle {
+  self = [super initWithType:type];
+  if (self) {
+    self.cellClass = [SuggestionsCell class];
+    _title = [title copy];
+    _subtitle = [subtitle copy];
+  }
+  return self;
+}
+
+#pragma mark - CollectionViewItem
+
+- (void)configureCell:(SuggestionsCell*)cell {
+  [super configureCell:cell];
+  [cell.titleButton setTitle:self.title forState:UIControlStateNormal];
+  cell.detailTextLabel.text = self.subtitle;
+}
+
+@end
+
+#pragma mark - SuggestionsCell
+
+@implementation SuggestionsCell
+
+@synthesize titleButton = _titleButton;
+@synthesize detailTextLabel = _detailTextLabel;
+
+- (instancetype)initWithFrame:(CGRect)frame {
+  self = [super initWithFrame:frame];
+  if (self) {
+    MDFRobotoFontLoader* fontLoader = [MDFRobotoFontLoader sharedInstance];
+    _titleButton = [UIButton buttonWithType:UIButtonTypeSystem];
+    _titleButton.titleLabel.font = [fontLoader mediumFontOfSize:16];
+    _titleButton.titleLabel.textColor = [[MDCPalette greyPalette] tint900];
+    [_titleButton addTarget:nil
+                     action:@selector(addNewItem:)
+           forControlEvents:UIControlEventTouchUpInside];
+
+    _detailTextLabel = [[UILabel alloc] init];
+    _detailTextLabel.font = [fontLoader mediumFontOfSize:14];
+    _detailTextLabel.textColor = [[MDCPalette greyPalette] tint500];
+
+    UIStackView* labelsStack = [[UIStackView alloc]
+        initWithArrangedSubviews:@[ _titleButton, _detailTextLabel ]];
+    labelsStack.axis = UILayoutConstraintAxisVertical;
+
+    [self.contentView addSubview:labelsStack];
+    labelsStack.layoutMarginsRelativeArrangement = YES;
+    labelsStack.layoutMargins = UIEdgeInsetsMake(16, 16, 16, 16);
+    labelsStack.alignment = UIStackViewAlignmentCenter;
+
+    labelsStack.translatesAutoresizingMaskIntoConstraints = NO;
+    [NSLayoutConstraint activateConstraints:@[
+      [self.contentView.leadingAnchor
+          constraintEqualToAnchor:labelsStack.leadingAnchor],
+      [self.contentView.trailingAnchor
+          constraintEqualToAnchor:labelsStack.trailingAnchor],
+      [self.contentView.topAnchor
+          constraintEqualToAnchor:labelsStack.topAnchor],
+      [self.contentView.bottomAnchor
+          constraintEqualToAnchor:labelsStack.bottomAnchor]
+    ]];
+
+    self.backgroundColor = [UIColor whiteColor];
+  }
+  return self;
+}
+
+@end