Introduce KeyframeEffectReadOnly interface

third_party/WebKit/Source/core/animation/KeyframeEffectReadOnly.cpp

+/*
+ * Copyright (C) 2016 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * 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
+ * OWNER 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 "core/animation/KeyframeEffectReadOnly.h"
+
+#include "bindings/core/v8/Dictionary.h"
+#include "bindings/core/v8/ExceptionState.h"
+#include "core/animation/EffectInput.h"
+#include "core/animation/KeyframeEffect.h"
+#include "core/animation/KeyframeEffectOptions.h"
+#include "core/animation/SampledEffect.h"
+#include "core/animation/TimingInput.h"
+#include "core/dom/Element.h"
+#include "core/frame/UseCounter.h"
+
+namespace blink {
+
+// Web Animations API Bindings constructors. We never actually want to create a
+// KeyframeEffectReadOnly object, we just want to provide a read-only interface
+// to the KeyframeEffect object, so pass straight through to the subclass
+// factory methods.
+KeyframeEffectReadOnly* KeyframeEffectReadOnly::create(ExecutionContext* executionContext, Element* element, const DictionarySequenceOrDictionary& effectInput, double duration, ExceptionState& exceptionState)
+{
+    return KeyframeEffect::create(executionContext, element, effectInput, duration, exceptionState);
+}
+
+KeyframeEffectReadOnly* KeyframeEffectReadOnly::create(ExecutionContext* executionContext, Element* element, const DictionarySequenceOrDictionary& effectInput, const KeyframeEffectOptions& timingInput, ExceptionState& exceptionState)
+{
+    return KeyframeEffect::create(executionContext, element, effectInput, timingInput, exceptionState);
+}
+
+KeyframeEffectReadOnly* KeyframeEffectReadOnly::create(ExecutionContext* executionContext, Element* element, const DictionarySequenceOrDictionary& effectInput, ExceptionState& exceptionState)
+{
+    return KeyframeEffect::create(executionContext, element, effectInput, exceptionState);
+}
+
+KeyframeEffectReadOnly::KeyframeEffectReadOnly(Element* target, EffectModel* model, const Timing& timing, Priority priority, EventDelegate* eventDelegate)
+    : AnimationEffectReadOnly(timing, eventDelegate)
+    , m_target(target)
+    , m_model(model)
+    , m_sampledEffect(nullptr)
+    , m_priority(priority)
+{
+}
+
+KeyframeEffectReadOnly::~KeyframeEffectReadOnly()
+{
+}

[alancutter (OOO until 2018), 2016/09/27 05:09:05]

It's fine to have empty destructors in headers.

[suzyh_UTC10 (ex-contributor), 2016/09/27 07:21:59]

Done.

+
+DEFINE_TRACE(KeyframeEffectReadOnly)
+{
+    visitor->trace(m_target);
+    visitor->trace(m_model);
+    visitor->trace(m_sampledEffect);
+    AnimationEffectReadOnly::trace(visitor);
+}
+
+} // namespace blink