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Unified Diff: Source/core/page/RuntimeCSSEnabled.cpp

Issue 14324009: Add support for disabling CSS Properties at runtime (Closed) Base URL: http://src.chromium.org/blink/trunk/Source/
Patch Set: Runtime guard more uses of CSSPropertyID, per Elliot's request. Created 7 years, 8 months ago
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Index: Source/core/page/RuntimeCSSEnabled.cpp
diff --git a/Source/core/page/RuntimeCSSEnabled.cpp b/Source/core/page/RuntimeCSSEnabled.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..7eb748686207544db85f803515184ffbc9cf37f3
--- /dev/null
+++ b/Source/core/page/RuntimeCSSEnabled.cpp
@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "core/page/RuntimeCSSEnabled.h"
+#include "core/page/RuntimeEnabledFeatures.h"
+#include "wtf/Vector.h"
+
+namespace WebCore {
+
+// FIXME: We should use a real BitVector class instead!
+typedef Vector<bool> BoolVector;
+
+static void setCSSPropertiesEnabled(CSSPropertyID* properties, size_t length, bool featureFlag)
+{
+ for (size_t i = 0; i < length; i++)
+ RuntimeCSSEnabled::setCSSPropertyEnabled(properties[i], featureFlag);
+}
+
+static void setPropertySwitchesFromRuntimeFeatures(BoolVector& properties)
+{
+#if ENABLE(CSS_REGIONS)
+ CSSPropertyID regionProperites[] = {
+ CSSPropertyWebkitFlowInto,
+ CSSPropertyWebkitFlowFrom,
+ CSSPropertyWebkitRegionOverflow,
+ CSSPropertyWebkitRegionBreakAfter,
+ CSSPropertyWebkitRegionBreakBefore,
+ CSSPropertyWebkitRegionBreakInside
+ };
+ setCSSPropertiesEnabled(regionProperites, WTF_ARRAY_LENGTH(regionProperites), RuntimeEnabledFeatures::cssRegionsEnabled());
+#endif
+#if ENABLE(CSS_EXCLUSIONS)
+ CSSPropertyID exclusionProperties[] = {
+ CSSPropertyWebkitWrap,
+ CSSPropertyWebkitWrapFlow,
+ CSSPropertyWebkitShapeMargin,
+ CSSPropertyWebkitShapePadding,
+ CSSPropertyWebkitWrapThrough,
+ CSSPropertyWebkitShapeInside,
+ CSSPropertyWebkitShapeOutside,
+ };
+ setCSSPropertiesEnabled(exclusionProperties, WTF_ARRAY_LENGTH(exclusionProperties), RuntimeEnabledFeatures::cssExclusionsEnabled());
+#endif
+#if ENABLE(CSS_COMPOSITING)
+ RuntimeCSSEnabled::setCSSPropertyEnabled(CSSPropertyBackgroundBlendMode, RuntimeEnabledFeatures::cssCompositingEnabled());
+ RuntimeCSSEnabled::setCSSPropertyEnabled(CSSPropertyWebkitBlendMode, RuntimeEnabledFeatures::cssCompositingEnabled());
+#endif
+}
+
+static BoolVector& propertySwitches()
+{
+ static BoolVector* switches = 0;
+ if (!switches) {
+ switches = new BoolVector;
+ switches->fill(true, numCSSProperties);
+ setPropertySwitchesFromRuntimeFeatures(*switches);
+ }
+ return *switches;
+}
+
+size_t indexForProperty(CSSPropertyID propertyId)
+{
+ RELEASE_ASSERT(propertyId >= firstCSSProperty && propertyId <= lastCSSProperty);
+ // Values all start at 0. Vector RELEASE_ASSERTS will catch if we're ever wrong.
+ return static_cast<size_t>(propertyId - firstCSSProperty);
+}
+
+bool RuntimeCSSEnabled::isCSSPropertyEnabled(CSSPropertyID propertyId)
+{
+ return propertySwitches()[indexForProperty(propertyId)];
+}
+
+void RuntimeCSSEnabled::setCSSPropertyEnabled(CSSPropertyID propertyId, bool enable)
+{
+ propertySwitches()[indexForProperty(propertyId)] = enable;
+}
+
+void RuntimeCSSEnabled::filterEnabledCSSPropertiesIntoVector(const CSSPropertyID* properties, size_t propertyCount, Vector<CSSPropertyID>& outVector)
+{
+ for (unsigned i = 0; i < propertyCount; i++) {
+ CSSPropertyID property = properties[i];
+ if (RuntimeCSSEnabled::isCSSPropertyEnabled(property))
+ outVector.append(property);
+ }
+}
+
+} // namespace WebCore
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