[selectors4] Implement :focus-within pseudo-class

third_party/WebKit/Source/core/css/CSSSelector.cpp

 /*
  * Copyright (C) 1999-2003 Lars Knoll (knoll@kde.org)
  *               1999 Waldo Bastian (bastian@kde.org)
  *               2001 Andreas Schlapbach (schlpbch@iam.unibe.ch)
  *               2001-2003 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2002, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights
  * reserved.
  * Copyright (C) 2008 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
@@ skipping 198 matching lines @@
     case kPseudoNthLastChild:
     case kPseudoNthLastOfType:
     case kPseudoLink:
     case kPseudoVisited:
     case kPseudoAny:
     case kPseudoAnyLink:
     case kPseudoAutofill:
     case kPseudoHover:
     case kPseudoDrag:
     case kPseudoFocus:
+    case kPseudoFocusWithin:
     case kPseudoActive:
     case kPseudoChecked:
     case kPseudoEnabled:
     case kPseudoFullPageMedia:
     case kPseudoDefault:
     case kPseudoDisabled:
     case kPseudoOptional:
     case kPseudoPlaceholder:
     case kPseudoPlaceholderShown:
     case kPseudoRequired:
@@ skipping 97 matching lines @@
     {"double-button", CSSSelector::kPseudoDoubleButton},
     {"empty", CSSSelector::kPseudoEmpty},
     {"enabled", CSSSelector::kPseudoEnabled},
     {"end", CSSSelector::kPseudoEnd},
     {"first", CSSSelector::kPseudoFirstPage},
     {"first-child", CSSSelector::kPseudoFirstChild},
     {"first-letter", CSSSelector::kPseudoFirstLetter},
     {"first-line", CSSSelector::kPseudoFirstLine},
     {"first-of-type", CSSSelector::kPseudoFirstOfType},
     {"focus", CSSSelector::kPseudoFocus},
+    {"focus-within", CSSSelector::kPseudoFocusWithin},
     {"future", CSSSelector::kPseudoFutureCue},
     {"horizontal", CSSSelector::kPseudoHorizontal},
     {"host", CSSSelector::kPseudoHost},
     {"hover", CSSSelector::kPseudoHover},
     {"in-range", CSSSelector::kPseudoInRange},
     {"increment", CSSSelector::kPseudoIncrement},
     {"indeterminate", CSSSelector::kPseudoIndeterminate},
     {"invalid", CSSSelector::kPseudoInvalid},
     {"last-child", CSSSelector::kPseudoLastChild},
     {"last-of-type", CSSSelector::kPseudoLastOfType},
@@ skipping 195 matching lines @@
     case kPseudoDefined:
     case kPseudoDisabled:
     case kPseudoDoubleButton:
     case kPseudoDrag:
     case kPseudoEmpty:
     case kPseudoEnabled:
     case kPseudoEnd:
     case kPseudoFirstChild:
     case kPseudoFirstOfType:
     case kPseudoFocus:
+    case kPseudoFocusWithin:
     case kPseudoFullPageMedia:
     case kPseudoFullScreen:
     case kPseudoFullScreenAncestor:
     case kPseudoFutureCue:
     case kPseudoHorizontal:
     case kPseudoHost:
     case kPseudoHostContext:
     case kPseudoHostHasAppearance:
     case kPseudoHover:
     case kPseudoInRange:
@@ skipping 449 matching lines @@
     if (count < NthBValue())
       return false;
     return (count - NthBValue()) % NthAValue() == 0;
   }
   if (count > NthBValue())
     return false;
   return (NthBValue() - count) % (-NthAValue()) == 0;
 }
 
 }  // namespace blink