src/third_party/WebKit/Source/core/css/RuntimeCSSEnabled.cpp

   1 /*
   2  * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  *
   8  * 1. Redistributions of source code must retain the above
   9  *    copyright notice, this list of conditions and the following
  10  *    disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above
  12  *    copyright notice, this list of conditions and the following
  13  *    disclaimer in the documentation and/or other materials
  14  *    provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  19  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  20  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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  26  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  27  * OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #include "config.h"
  31 #include "core/css/RuntimeCSSEnabled.h"
  32
  33 #include "platform/RuntimeEnabledFeatures.h"
  34 #include "wtf/BitArray.h"
  35
  36 namespace blink {
  37
  38 typedef BitArray<numCSSProperties> CSSPropertySwitches;
  39
  40 static void setCSSPropertiesEnabled(CSSPropertyID* properties, size_t length, bool featureFlag)
  41 {
  42     for (size_t i = 0; i < length; i++)
  43         RuntimeCSSEnabled::setCSSPropertyEnabled(properties[i], featureFlag);
  44 }
  45
  46 static void setPropertySwitchesFromRuntimeFeatures()
  47 {
  48     CSSPropertyID css3TextDecorationProperties[] = {
  49         CSSPropertyTextDecorationColor,
  50         CSSPropertyTextDecorationLine,
  51         CSSPropertyTextDecorationStyle,
  52         CSSPropertyTextUnderlinePosition,
  53     };
  54     setCSSPropertiesEnabled(css3TextDecorationProperties, WTF_ARRAY_LENGTH(css3TextDecorationProperties), RuntimeEnabledFeatures::css3TextDecorationsEnabled());
  55     CSSPropertyID css3TextProperties[] = {
  56         CSSPropertyTextAlignLast,
  57         CSSPropertyTextJustify,
  58     };
  59     setCSSPropertiesEnabled(css3TextProperties, WTF_ARRAY_LENGTH(css3TextProperties), RuntimeEnabledFeatures::css3TextEnabled());
  60     CSSPropertyID cssGridLayoutProperties[] = {
  61         CSSPropertyGridAutoColumns,
  62         CSSPropertyGridAutoRows,
  63         CSSPropertyGridTemplateColumns,
  64         CSSPropertyGridTemplateRows,
  65         CSSPropertyGridColumnStart,
  66         CSSPropertyGridColumnEnd,
  67         CSSPropertyGridRowStart,
  68         CSSPropertyGridRowEnd,
  69         CSSPropertyGridColumn,
  70         CSSPropertyGridRow,
  71         CSSPropertyGridArea,
  72         CSSPropertyGridAutoFlow,
  73         CSSPropertyGridTemplateAreas,
  74         CSSPropertyGridTemplate,
  75         CSSPropertyGrid,
  76         CSSPropertyJustifySelf,
  77         CSSPropertyJustifyItems
  78     };
  79     setCSSPropertiesEnabled(cssGridLayoutProperties, WTF_ARRAY_LENGTH(cssGridLayoutProperties), RuntimeEnabledFeatures::cssGridLayoutEnabled());
  80     CSSPropertyID cssObjectFitPositionProperties[] = {
  81         CSSPropertyObjectFit,
  82         CSSPropertyObjectPosition
  83     };
  84     setCSSPropertiesEnabled(cssObjectFitPositionProperties, WTF_ARRAY_LENGTH(cssObjectFitPositionProperties), RuntimeEnabledFeatures::objectFitPositionEnabled());
  85
  86     CSSPropertyID animationProperties[] = {
  87         CSSPropertyAnimation,
  88         CSSPropertyAnimationName,
  89         CSSPropertyAnimationDuration,
  90         CSSPropertyAnimationTimingFunction,
  91         CSSPropertyAnimationDelay,
  92         CSSPropertyAnimationIterationCount,
  93         CSSPropertyAnimationDirection,
  94         CSSPropertyAnimationFillMode,
  95         CSSPropertyAnimationPlayState
  96     };
  97     setCSSPropertiesEnabled(animationProperties, WTF_ARRAY_LENGTH(animationProperties), RuntimeEnabledFeatures::cssAnimationUnprefixedEnabled());
  98
  99     RuntimeCSSEnabled::setCSSPropertyEnabled(CSSPropertyMixBlendMode, RuntimeEnabledFeatures::cssCompositingEnabled());
 100     RuntimeCSSEnabled::setCSSPropertyEnabled(CSSPropertyIsolation, RuntimeEnabledFeatures::cssCompositingEnabled());
 101     RuntimeCSSEnabled::setCSSPropertyEnabled(CSSPropertyTouchActionDelay, RuntimeEnabledFeatures::cssTouchActionDelayEnabled());
 102     RuntimeCSSEnabled::setCSSPropertyEnabled(CSSPropertyMaskSourceType, RuntimeEnabledFeatures::cssMaskSourceTypeEnabled());
 103     RuntimeCSSEnabled::setCSSPropertyEnabled(CSSPropertyColumnFill, RuntimeEnabledFeatures::regionBasedColumnsEnabled());
 104     RuntimeCSSEnabled::setCSSPropertyEnabled(CSSPropertyScrollBehavior, RuntimeEnabledFeatures::cssomSmoothScrollEnabled());
 105     RuntimeCSSEnabled::setCSSPropertyEnabled(CSSPropertyWillChange, RuntimeEnabledFeatures::cssWillChangeEnabled());
 106
 107     // InternalCallback is an implementation detail, rather than an experimental feature, and should never be exposed to the web.
 108     RuntimeCSSEnabled::setCSSPropertyEnabled(CSSPropertyInternalCallback, false);
 109 }
 110
 111 static CSSPropertySwitches& propertySwitches()
 112 {
 113     static CSSPropertySwitches* switches = 0;
 114     if (!switches) {
 115         switches = new CSSPropertySwitches(true); // All bits sets to 1.
 116         setPropertySwitchesFromRuntimeFeatures();
 117     }
 118     return *switches;
 119 }
 120
 121 size_t indexForProperty(CSSPropertyID propertyId)
 122 {
 123     RELEASE_ASSERT(propertyId >= firstCSSProperty && propertyId <= lastCSSProperty);
 124     // Values all start at 0. BitArray ASSERTS will catch if we're ever wrong.
 125     return static_cast<size_t>(propertyId - firstCSSProperty);
 126 }
 127
 128 bool RuntimeCSSEnabled::isCSSPropertyEnabled(CSSPropertyID propertyId)
 129 {
 130     // Internal properties shouldn't be exposed to the web
 131     // so they are considered to be always disabled.
 132     if (isInternalProperty(propertyId))
 133         return false;
 134
 135     return propertySwitches().get(indexForProperty(propertyId));
 136 }
 137
 138 void RuntimeCSSEnabled::setCSSPropertyEnabled(CSSPropertyID propertyId, bool enable)
 139 {
 140     size_t propertyIndex = indexForProperty(propertyId);
 141     if (enable)
 142         propertySwitches().set(propertyIndex);
 143     else
 144         propertySwitches().clear(propertyIndex);
 145 }
 146
 147 void RuntimeCSSEnabled::filterEnabledCSSPropertiesIntoVector(const CSSPropertyID* properties, size_t propertyCount, Vector<CSSPropertyID>& outVector)
 148 {
 149     for (unsigned i = 0; i < propertyCount; i++) {
 150         CSSPropertyID property = properties[i];
 151         if (RuntimeCSSEnabled::isCSSPropertyEnabled(property))
 152             outVector.append(property);
 153     }
 154 }
 155
 156 } // namespace blink