Implements hanging property for text-indent from CSS3

Source/core/css/resolver/StyleBuilderCustom.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
@@ skipping 533 matching lines @@
         CSSValue* item = i.value();
         t |= *toCSSPrimitiveValue(item);
     }
     state.style()->setTextDecoration(t);
 }
 
 void StyleBuilderFunctions::applyInheritCSSPropertyTextIndent(StyleResolverState& state)
 {
     state.style()->setTextIndent(state.parentStyle()->textIndent());
     state.style()->setTextIndentLine(state.parentStyle()->textIndentLine());
+    state.style()->setTextIndentType(state.parentStyle()->textIndentType());
 }
 
 void StyleBuilderFunctions::applyInitialCSSPropertyTextIndent(StyleResolverState& state)
 {
     state.style()->setTextIndent(RenderStyle::initialTextIndent());
     state.style()->setTextIndentLine(RenderStyle::initialTextIndentLine());
+    state.style()->setTextIndentType(RenderStyle::initialTextIndentType());
 }
 
 void StyleBuilderFunctions::applyValueCSSPropertyTextIndent(StyleResolverState& state, CSSValue* value)
 {
     if (!value->isValueList())
         return;
 
-    // [ <length> | <percentage> ] each-line
-    // The order is guaranteed. See BisonCSSParser::parseTextIndent.
-    // The second value, each-line is handled only when css3TextEnabled() returns true.
+    Length lengthOrPercentageValue;
+    TextIndentLine textIndentLineValue = RenderStyle::initialTextIndentLine();
+    TextIndentType textIndentTypeValue = RenderStyle::initialTextIndentType();
 
-    CSSValueList* valueList = toCSSValueList(value);
-    CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(valueList->itemWithoutBoundsCheck(0));
-    Length lengthOrPercentageValue = primitiveValue->convertToLength<FixedConversion | PercentConversion>(state.cssToLengthConversionData());
+    for (CSSValueListIterator i(value); i.hasMore(); i.advance()) {
+        CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(i.value());
+        if (!primitiveValue->getValueID())
+            lengthOrPercentageValue = primitiveValue->convertToLength<FixedConversion | PercentConversion>(state.cssToLengthConversionData());
+        else if (primitiveValue->getValueID() == CSSValueEachLine)
+            textIndentLineValue = TextIndentEachLine;
+        else if (primitiveValue->getValueID() == CSSValueHanging)
+            textIndentTypeValue = TextIndentHanging;
+        else
+            ASSERT_NOT_REACHED();
+    }
+
     state.style()->setTextIndent(lengthOrPercentageValue);
-
-    ASSERT(valueList->length() <= 2);
-    CSSPrimitiveValue* eachLineValue = toCSSPrimitiveValue(valueList->item(1));
-    if (eachLineValue) {
-        ASSERT(eachLineValue->getValueID() == CSSValueEachLine);
-        state.style()->setTextIndentLine(TextIndentEachLine);
-    } else
-        state.style()->setTextIndentLine(TextIndentFirstLine);
+    state.style()->setTextIndentLine(textIndentLineValue);
+    state.style()->setTextIndentType(textIndentTypeValue);
 }
 
 void StyleBuilderFunctions::applyInitialCSSPropertyTransformOrigin(StyleResolverState& state)
 {
     applyInitialCSSPropertyWebkitTransformOriginX(state);
     applyInitialCSSPropertyWebkitTransformOriginY(state);
     applyInitialCSSPropertyWebkitTransformOriginZ(state);
 }
 
 void StyleBuilderFunctions::applyInheritCSSPropertyTransformOrigin(StyleResolverState& state)
@@ skipping 1697 matching lines @@
         break;
     }
     case CSSPropertyEnableBackground:
         // Silently ignoring this property for now
         // http://bugs.webkit.org/show_bug.cgi?id=6022
         break;
     }
 }
 
 } // namespace WebCore