[ios] Fixes TableViewTextItem text color assignment.

TextItemColorBlack was being used as the default color even if
textColor was not being set. This was causing the item label
to skip the styler textColor for the label. This CL fixes that
problem and introduces some unit_tests to check this.

Bug: 865808
Cq-Include-Trybots: luci.chromium.try:ios-simulator-full-configs;master.tryserver.chromium.mac:ios-simulator-cronet
Change-Id: Ic9e7d368d4acb5cab8f2585762c69363c1143749
Reviewed-on: https://chromium-review.googlesource.com/1145584
Reviewed-by: Kurt Horimoto <kkhorimoto@chromium.org>
Commit-Queue: Sergio Collazos <sczs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577003}

ios/chrome/browser/ui/history/history_table_view_controller.mm

@@ -769,7 +769,7 @@ - (TableViewItem*)statusItemWithMessage:(NSString*)statusMessage
     TableViewTextItem* entriesStatusItem =
         [[TableViewTextItem alloc] initWithType:ItemTypeEntriesStatus];
     entriesStatusItem.text = statusMessage;
-    entriesStatusItem.textColor = TextItemColorBlack;
+    entriesStatusItem.textColor = [UIColor blackColor];
     statusMessageItem = entriesStatusItem;
   }
   return statusMessageItem;

ios/chrome/browser/ui/settings/table_cell_catalog_view_controller.mm

@@ -77,7 +77,7 @@ - (void)loadModel {
       [[TableViewTextItem alloc] initWithType:ItemTypeText];
   textItem.text = @"Simple Text Cell";
   textItem.textAlignment = NSTextAlignmentCenter;
-  textItem.textColor = TextItemColorBlack;
+  textItem.textColor = [UIColor blackColor];
   [model addItem:textItem toSectionWithIdentifier:SectionIdentifierText];
 
   TableViewAccessoryItem* textAccessoryItem =

ios/chrome/browser/ui/table_view/cells/table_view_cells_constants.h

@@ -34,4 +34,7 @@ extern const CGFloat kUseDefaultFontSize;
 // Spacing between text label and cell contentView.
 extern const CGFloat kTableViewLabelVerticalTopSpacing;
 
+// Hex Value for light gray label text color.
+extern const CGFloat kTableViewTextLabelColorLightGrey;
+
 #endif  // IOS_CHROME_BROWSER_UI_TABLE_VIEW_CELLS_TABLE_VIEW_CELLS_CONSTANTS_H_

ios/chrome/browser/ui/table_view/cells/table_view_cells_constants.mm

@@ -17,3 +17,5 @@
 const CGFloat kTableViewHighlightedCellColorAlpha = 0.5;
 const CGFloat kUseDefaultFontSize = 0.0;
 const CGFloat kTableViewLabelVerticalTopSpacing = 13.0;
+
+const CGFloat kTableViewTextLabelColorLightGrey = 0x6D6D72;

ios/chrome/browser/ui/table_view/cells/table_view_text_item.h

@@ -9,22 +9,16 @@
 
 #import "ios/chrome/browser/ui/table_view/cells/table_view_item.h"
 
-// Defines the colors used for the cell text.
-typedef NS_ENUM(UInt32, TextItemColor) {
-  TextItemColorLightGrey = 0x6D6D72,
-  TextItemColorBlack = 0x000000,
-};
-
 // TableViewTextItem contains the model data for a TableViewTextCell.
 @interface TableViewTextItem : TableViewItem
 
 // Text Alignment for the cell's textLabel. Default is NSTextAlignmentLeft.
 @property(nonatomic, assign) NSTextAlignment textAlignment;
 
-// Hex color for the cell's textLabel. Default is TextItemColorLightGrey.
-// ChromeTableViewStyler's |cellTitleColor| takes precedence over the default
-// color, but not over |textColor|.
-@property(nonatomic, assign) TextItemColor textColor;
+// UIColor for the cell's textLabel. Default is
+// kTableViewTextLabelColorLightGrey. ChromeTableViewStyler's |cellTitleColor|
+// takes precedence over the default color, but not over |textColor|.
+@property(nonatomic, assign) UIColor* textColor;
 
 @property(nonatomic, readwrite, strong) NSString* text;
 

ios/chrome/browser/ui/table_view/cells/table_view_text_item.mm

@@ -42,13 +42,13 @@ - (void)configureCell:(UITableViewCell*)tableCell
   cell.textLabel.backgroundColor = styler.tableViewBackgroundColor;
   // This item's text color takes precedence over the global styler.
   // TODO(crbug.com/854249): redo the logic for this convoluted if clause.
-  if (self.textColor == TextItemColorBlack ||
-      self.textColor == TextItemColorLightGrey) {
-    cell.textLabel.textColor = UIColorFromRGB(self.textColor);
+  if (self.textColor) {
+    cell.textLabel.textColor = self.textColor;
   } else if (styler.cellTitleColor) {
     cell.textLabel.textColor = styler.cellTitleColor;
   } else {
-    cell.textLabel.textColor = UIColorFromRGB(TextItemColorLightGrey);
+    cell.textLabel.textColor =
+        UIColorFromRGB(kTableViewTextLabelColorLightGrey);
   }
   cell.textLabel.textAlignment =
       self.textAlignment ? self.textAlignment : NSTextAlignmentLeft;

ios/chrome/browser/ui/table_view/cells/table_view_text_item_unittest.mm

@@ -5,7 +5,9 @@
 #import "ios/chrome/browser/ui/table_view/cells/table_view_text_item.h"
 
 #include "base/mac/foundation_util.h"
+#import "ios/chrome/browser/ui/table_view/cells/table_view_cells_constants.h"
 #import "ios/chrome/browser/ui/table_view/chrome_table_view_styler.h"
+#import "ios/chrome/browser/ui/uikit_ui_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/gtest_mac.h"
 #include "testing/platform_test.h"
@@ -42,9 +44,37 @@
   TableViewTextCell* cell = [[[item cellClass] alloc] init];
   ASSERT_TRUE([cell isMemberOfClass:[TableViewTextCell class]]);
 
+  ChromeTableViewStyler* styler = [[ChromeTableViewStyler alloc] init];
+  UIColor* testTextColor = [UIColor redColor];
+  styler.cellTitleColor = testTextColor;
+  UIColor* testBackgroundColor = [UIColor blueColor];
+  styler.tableViewBackgroundColor = testBackgroundColor;
+  [item configureCell:cell withStyler:styler];
+  EXPECT_NSEQ(testBackgroundColor, cell.textLabel.backgroundColor);
+  EXPECT_NSEQ(testTextColor, cell.textLabel.textColor);
+}
+
+TEST_F(TableViewTextItemTest, ConfigureLabelColorWithProperty) {
+  TableViewTextItem* item = [[TableViewTextItem alloc] initWithType:0];
+  UIColor* textColor = [UIColor blueColor];
+  item.textColor = textColor;
+  TableViewTextCell* cell = [[[item cellClass] alloc] init];
+  ASSERT_TRUE([cell isMemberOfClass:[TableViewTextCell class]]);
+
   ChromeTableViewStyler* styler = [[ChromeTableViewStyler alloc] init];
   UIColor* testColor = [UIColor redColor];
   styler.tableViewBackgroundColor = testColor;
   [item configureCell:cell withStyler:styler];
-  EXPECT_NSEQ(testColor, cell.textLabel.backgroundColor);
+  EXPECT_NSEQ(textColor, cell.textLabel.textColor);
+  EXPECT_NSNE(testColor, cell.textLabel.textColor);
+}
+
+TEST_F(TableViewTextItemTest, ConfigureLabelColorWithDefaultColor) {
+  TableViewTextItem* item = [[TableViewTextItem alloc] initWithType:0];
+  TableViewTextCell* cell = [[[item cellClass] alloc] init];
+  ASSERT_TRUE([cell isMemberOfClass:[TableViewTextCell class]]);
+  ChromeTableViewStyler* styler = [[ChromeTableViewStyler alloc] init];
+  [item configureCell:cell withStyler:styler];
+  EXPECT_NSEQ(UIColorFromRGB(kTableViewTextLabelColorLightGrey),
+              cell.textLabel.textColor);
 }