Add support for disabling CSS Properties at runtime

bindings/v8/RuntimeCSSEnabled.cpp

+/*
+ * 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 "RuntimeCSSEnabled.h"
+
+namespace WebCore {
+
+Vector<bool, numCSSProperties>* RuntimeCSSEnabled::CSSPropertiesSwitches = NULL;
+Vector<bool, numCSSValueKeywords>* RuntimeCSSEnabled::CSSValuesSwitches = NULL;
+
+Vector<bool, numCSSProperties>* RuntimeCSSEnabled::getCSSPropertiesSwitches()
+{
+    if (!CSSPropertiesSwitches) {
+        CSSPropertiesSwitches = new Vector<bool, numCSSProperties>;
+        CSSPropertiesSwitches->fill(true, numCSSProperties);
+    }
+
+    return CSSPropertiesSwitches;
+}
+
+Vector<bool, numCSSValueKeywords>* RuntimeCSSEnabled::getCSSValuesSwitches()
+{
+    if (!CSSValuesSwitches) {
+        CSSValuesSwitches = new Vector<bool, numCSSValueKeywords>;
+        CSSValuesSwitches->fill(true, numCSSValueKeywords);
+    }
+
+    return CSSValuesSwitches;
+}
+
+bool RuntimeCSSEnabled::isCSSValueEnabled(CSSValueID valueID)
+{
+    return getCSSValuesSwitches()->at(
+        static_cast<size_t>(valueID));
+}
+
+void RuntimeCSSEnabled::setCSSValueEnabled(CSSValueID valueID, bool enable)
+{
+    getCSSValuesSwitches()->at(
+        static_cast<size_t>(valueID)) = enable;
+}
+
+bool RuntimeCSSEnabled::isCSSPropertyEnabled(CSSPropertyID propID)
+{
+    size_t propIDIndex = static_cast<size_t>(propID);
+    if (propIDIndex < firstCSSProperty || propIDIndex > lastCSSProperty)
+        return true;
+
+    propIDIndex -= firstCSSProperty;
+    return getCSSPropertiesSwitches()->at(propIDIndex);
+}
+
+void RuntimeCSSEnabled::setCSSPropertyEnabled(CSSPropertyID propID, bool enable)
+{
+    size_t propIDIndex = static_cast<size_t>(propID);
+    if (propIDIndex < firstCSSProperty || propIDIndex > lastCSSProperty)
+        return;
+
+    propIDIndex -= firstCSSProperty;
+    getCSSPropertiesSwitches()->at(propIDIndex) = enable;
+}
+
+} // namespace WebCore