Expose font and color of the main and secondary texts in CollectionViewTextItem

ios/chrome/browser/ui/collection_view/cells/collection_view_text_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/collection_view/cells/collection_view_text_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
 
 @implementation CollectionViewTextItem
 
 @synthesize accessoryType = _accessoryType;
 @synthesize text = _text;
 @synthesize detailText = _detailText;
 @synthesize image = _image;
+@synthesize textFont = _textFont;
+@synthesize textColor = _textColor;
+@synthesize detailTextFont = _detailTextFont;
+@synthesize detailTextColor = _detailTextColor;
 
 - (instancetype)initWithType:(NSInteger)type {
   self = [super initWithType:type];
   if (self) {
     self.cellClass = [MDCCollectionViewTextCell class];
+    _textFont = [[MDFRobotoFontLoader sharedInstance] mediumFontOfSize:14];
+    _textColor = [[MDCPalette greyPalette] tint900];
+    _detailTextFont =
+        [[MDFRobotoFontLoader sharedInstance] regularFontOfSize:14];
+    _detailTextColor = [[MDCPalette greyPalette] tint500];
   }
   return self;
 }
 
+- (void)setTextFont:(UIFont*)textFont {

[lpromero, 2017/01/13 10:13:26]

Could you do something like this:

- (UIFont*)textFont {
  if (!_textFont) {
    _textFont = [[MDFRobotoFontLoader sharedInstance] mediumFontOfSize:14];
  }
  return _textFont;
}

That way the default value can be reset easily by setting textFont to nil (which
is exactly the behavior of a null_resettable property).

[Moe, 2017/01/13 15:28:19]

Done.

+  if (textFont) {
+    _textFont = textFont;
+  }
+}
+
+- (void)setTextColor:(UIColor*)textColor {
+  if (textColor) {
+    _textColor = textColor;
+  }
+}
+
+- (void)setDetailTextFont:(UIFont*)detailTextFont {
+  if (detailTextFont) {
+    _detailTextFont = detailTextFont;
+  }
+}
+
+- (void)setDetailTextColor:(UIColor*)detailTextColor {
+  if (detailTextColor) {
+    _detailTextColor = detailTextColor;
+  }
+}
+
 #pragma mark CollectionViewItem
 
 - (void)configureCell:(MDCCollectionViewTextCell*)cell {
   [super configureCell:cell];
   cell.accessoryType = self.accessoryType;
   cell.textLabel.text = self.text;
   cell.detailTextLabel.text = self.detailText;
   cell.imageView.image = self.image;
   cell.isAccessibilityElement = YES;
   if (self.detailText.length == 0) {
     cell.accessibilityLabel = self.text;
   } else {
     cell.accessibilityLabel =
         [NSString stringWithFormat:@"%@, %@", self.text, self.detailText];
   }
 
   // Styling.
-  cell.textLabel.font =
-      [[MDFRobotoFontLoader sharedInstance] mediumFontOfSize:14];
-  cell.textLabel.textColor = [[MDCPalette greyPalette] tint900];
-
-  cell.detailTextLabel.font =
-      [[MDFRobotoFontLoader sharedInstance] regularFontOfSize:14];
-  cell.detailTextLabel.textColor = [[MDCPalette greyPalette] tint500];
+  cell.textLabel.font = self.textFont;
+  cell.textLabel.textColor = self.textColor;
+  cell.detailTextLabel.font = self.detailTextFont;
+  cell.detailTextLabel.textColor = self.detailTextColor;
 }
 
 @end