Initial support for experimental touch-action CSS feature

Source/core/css/CSSParser.cpp

 /*
  * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  * Copyright (C) 2012 Intel Corporation. All rights reserved.
  *
@@ skipping 191 matching lines @@
 }
 
 CSSParserContext::CSSParserContext(CSSParserMode mode, const KURL& baseURL)
     : baseURL(baseURL)
     , mode(mode)
     , isHTMLDocument(false)
     , isCSSCustomFilterEnabled(false)
     , isCSSStickyPositionEnabled(false)
     , isCSSGridLayoutEnabled(false)
     , isCSSVariablesEnabled(false)
+    , isCSSTouchActionEnabled(false)
     , needsSiteSpecificQuirks(false)
 {
 }
 
 CSSParserContext::CSSParserContext(Document* document, const KURL& baseURL, const String& charset)
     : baseURL(baseURL.isNull() ? document->baseURL() : baseURL)
     , charset(charset)
     , mode(document->inQuirksMode() ? CSSQuirksMode : CSSStrictMode)
     , isHTMLDocument(document->isHTMLDocument())
     , isCSSCustomFilterEnabled(document->settings() ? document->settings()->isCSSCustomFilterEnabled() : false)
     , isCSSStickyPositionEnabled(document->cssStickyPositionEnabled())
     , isCSSGridLayoutEnabled(document->cssGridLayoutEnabled())
     , isCSSVariablesEnabled(document->settings() ? document->settings()->cssVariablesEnabled() : false)
+    , isCSSTouchActionEnabled(RuntimeEnabledFeatures::cssTouchActionEnabled())
     , needsSiteSpecificQuirks(document->settings() ? document->settings()->needsSiteSpecificQuirks() : false)
 {
 }
 
 bool operator==(const CSSParserContext& a, const CSSParserContext& b)
 {
     return a.baseURL == b.baseURL
         && a.charset == b.charset
         && a.mode == b.mode
         && a.isHTMLDocument == b.isHTMLDocument
         && a.isCSSCustomFilterEnabled == b.isCSSCustomFilterEnabled
         && a.isCSSStickyPositionEnabled == b.isCSSStickyPositionEnabled
         && a.isCSSGridLayoutEnabled == b.isCSSGridLayoutEnabled
         && a.isCSSVariablesEnabled == b.isCSSVariablesEnabled
+        && a.isCSSTouchActionEnabled == b.isCSSTouchActionEnabled
         && a.needsSiteSpecificQuirks == b.needsSiteSpecificQuirks;
 }
 
 CSSParser::CSSParser(const CSSParserContext& context, UseCounter* counter)
     : m_context(context)
     , m_important(false)
     , m_id(CSSPropertyInvalid)
     , m_styleSheet(0)
     , m_supportsCondition(false)
     , m_selectorListForParseSelector(0)
@@ skipping 452 matching lines @@
             return true;
         break;
     case CSSPropertyTextRendering: // auto | optimizeSpeed | optimizeLegibility | geometricPrecision
         if (valueID == CSSValueAuto || valueID == CSSValueOptimizespeed || valueID == CSSValueOptimizelegibility || valueID == CSSValueGeometricprecision)
             return true;
         break;
     case CSSPropertyTextTransform: // capitalize | uppercase | lowercase | none | inherit
         if ((valueID >= CSSValueCapitalize && valueID <= CSSValueLowercase) || valueID == CSSValueNone)
             return true;
         break;
+    case CSSPropertyTouchAction: // auto | none
+        if (parserContext.isCSSTouchActionEnabled && (valueID == CSSValueAuto || valueID == CSSValueNone))
+            return true;
+        break;
     case CSSPropertyVisibility: // visible | hidden | collapse | inherit
         if (valueID == CSSValueVisible || valueID == CSSValueHidden || valueID == CSSValueCollapse)
             return true;
         break;
     case CSSPropertyWebkitAppearance:
         if ((valueID >= CSSValueCheckbox && valueID <= CSSValueTextarea) || valueID == CSSValueNone)
             return true;
         break;
     case CSSPropertyWebkitBackfaceVisibility:
         if (valueID == CSSValueVisible || valueID == CSSValueHidden)
@@ skipping 242 matching lines @@
     case CSSPropertyTableLayout:
     case CSSPropertyTextLineThroughMode:
     case CSSPropertyTextLineThroughStyle:
     case CSSPropertyTextOverflow:
     case CSSPropertyTextOverlineMode:
     case CSSPropertyTextOverlineStyle:
     case CSSPropertyTextRendering:
     case CSSPropertyTextTransform:
     case CSSPropertyTextUnderlineMode:
     case CSSPropertyTextUnderlineStyle:
+    case CSSPropertyTouchAction:
     case CSSPropertyVisibility:
     case CSSPropertyWebkitAppearance:
     case CSSPropertyWebkitBackfaceVisibility:
     case CSSPropertyWebkitBorderAfterStyle:
     case CSSPropertyWebkitBorderBeforeStyle:
     case CSSPropertyWebkitBorderEndStyle:
     case CSSPropertyWebkitBorderFit:
     case CSSPropertyWebkitBorderStartStyle:
     case CSSPropertyWebkitBoxAlign:
     case CSSPropertyWebkitBoxDecorationBreak:
@@ skipping 1779 matching lines @@
     case CSSPropertyTableLayout:
     case CSSPropertyTextLineThroughMode:
     case CSSPropertyTextLineThroughStyle:
     case CSSPropertyTextOverflow:
     case CSSPropertyTextOverlineMode:
     case CSSPropertyTextOverlineStyle:
     case CSSPropertyTextRendering:
     case CSSPropertyTextTransform:
     case CSSPropertyTextUnderlineMode:
     case CSSPropertyTextUnderlineStyle:
+    case CSSPropertyTouchAction:
     case CSSPropertyVariable:
     case CSSPropertyVisibility:
     case CSSPropertyWebkitAppearance:
     case CSSPropertyWebkitBackfaceVisibility:
     case CSSPropertyWebkitBorderAfterStyle:
     case CSSPropertyWebkitBorderBeforeStyle:
     case CSSPropertyWebkitBorderEndStyle:
     case CSSPropertyWebkitBorderFit:
     case CSSPropertyWebkitBorderStartStyle:
     case CSSPropertyWebkitBoxAlign:
@@ skipping 8929 matching lines @@
     result.lineNumber = lineNumber;
     result.content = content;
     size_t newLength = content.length();
     while (newLength > 0 && isHTMLSpace(result.content[newLength - 1]))
         --newLength;
     result.content.setLength(newLength);
     return result;
 }
 
 }