[ios] Added white text coloring to MWMButton.

iphone/Maps/Classes/Components/MWMButton.h

@@ -4,6 +4,7 @@ typedef NS_ENUM(NSUInteger, MWMButtonColoring)
   MWMButtonColoringBlue,
   MWMButtonColoringBlack,
   MWMButtonColoringWhite,
+  MWMButtonColoringWhiteText,
   MWMButtonColoringGray
 };
 

iphone/Maps/Classes/Components/MWMButton.mm

@@ -76,6 +76,9 @@ namespace
       case MWMButtonColoringGray:
         self.tintColor = [UIColor blackDividers];
         break;
+      case MWMButtonColoringWhiteText:
+        self.tintColor = [UIColor whitePrimaryTextHighlighted];
+        break;
       case MWMButtonColoringWhite:
       case MWMButtonColoringOther:
         break;
@@ -103,6 +106,7 @@ namespace
         self.tintColor = [UIColor linkBlue];
         break;
       case MWMButtonColoringWhite:
+      case MWMButtonColoringWhiteText:
       case MWMButtonColoringBlue:
       case MWMButtonColoringOther:
       case MWMButtonColoringGray:
@@ -125,6 +129,9 @@ namespace
     case MWMButtonColoringWhite:
       self.tintColor = [UIColor white];
       break;
+    case MWMButtonColoringWhiteText:
+      self.tintColor = [UIColor whitePrimaryText];
+      break;
     case MWMButtonColoringBlue:
       self.tintColor = [UIColor linkBlue];
       break;
@@ -145,6 +152,8 @@ namespace
     self.coloring = MWMButtonColoringBlack;
   else if ([coloring isEqualToString:@"MWMWhite"])
     self.coloring = MWMButtonColoringWhite;
+  else if ([coloring isEqualToString:@"MWMWhiteText"])
+    self.coloring = MWMButtonColoringWhiteText;
   else if ([coloring isEqualToString:@"MWMOther"])
     self.coloring = MWMButtonColoringOther;
   else if ([coloring isEqualToString:@"MWMGray"])

iphone/Maps/UIColor+MapsMeColor.h

@@ -24,6 +24,7 @@
 + (UIColor *)blackDividers;
 + (UIColor *)white;
 + (UIColor *)whitePrimaryText;
++ (UIColor *)whitePrimaryTextHighlighted;
 + (UIColor *)whiteSecondaryText;
 + (UIColor *)whiteHintText;
 + (UIColor *)whiteDividers;