Expose Web Animations API to Web Workers

Source/core/wawwa/AnimatableElement.cpp

+/*
+ * Copyright (C) 2014 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 "config.h"
+#include "core/wawwa/AnimatableElement.h"
+
+namespace blink {
+
+AnimatableElement::AnimatableElement(String inputID)
+    : m_id(inputID)
+{
+}
+
+PassRefPtrWillBeRawPtr<AnimatableElement> AnimatableElement::create(String inputID)
+{
+    return adoptRef(new AnimatableElement(inputID));
+}
+
+AnimatableElement * AnimatableElement::clone()
+{
+    return new AnimatableElement(m_id);
+}
+
+PassRefPtrWillBeRawPtr<RemotePlayer> AnimatableElement::animate(const Vector<Dictionary>& keyframeDictionaryVector, const Dictionary& timingInputDictionary, PassRefPtr<DedicatedWorkerGlobalScope> workerGlobalScope, ExceptionState& es)
+{
+    String temp = m_id.isolatedCopy();
+    ASSERT(temp.isSafeToSendToAnotherThread());    
+    Document* doc = static_cast<Document*>(workerGlobalScope->thread()->workerObjectProxy().context());
+    Page* page = doc->page();
+
+    Timing ti = TimingInput::convert(timingInputDictionary);

[dstockwell, 2014/08/29 01:05:43]

Don't use acronyms for local variable names.

+
+    Vector<ProxyKeyframe> holdVector;

[dstockwell, 2014/08/29 01:05:43]

Try to avoid using types in variable names. 'holds' might be more appropriate,
but I'm still not sure what it is.

+
+    ProxyKeyframe keyframe;
+    double lastOffset = 0;
+    for (size_t i = 0; i < keyframeDictionaryVector.size(); i++) {

[dstockwell, 2014/08/29 01:05:43]

This logic should be shared with EffectInput.

[nainar1, 2014/08/29 06:01:39]

Acknowledged.

+        ScriptValue scriptValue;
+        bool frameHasOffset = DictionaryHelper::get(keyframeDictionaryVector[i], "offset", scriptValue) && !scriptValue.isNull();
+        if (frameHasOffset) {
+            double offset;
+            DictionaryHelper::get(keyframeDictionaryVector[i], "offset", offset);
+            if (std::isnan(offset)) {
+                es.throwDOMException(InvalidModificationError, "Non numeric offset provided");
+            }
+            if (offset < 0 || offset > 1) {
+                es.throwDOMException(InvalidModificationError, "Offsets provided outside the range [0, 1]");
+                return nullptr;
+            }
+            if (offset < lastOffset) {
+                es.throwDOMException(InvalidModificationError, "Keyframes with specified offsets are not sorted");
+                return nullptr;
+            }
+            lastOffset = offset;
+            keyframe.offset = offset;
+        }
+        keyframe.offset = 2;
+        String compositeString;
+        DictionaryHelper::get(keyframeDictionaryVector[i], "composite", compositeString);
+        if (compositeString == "add")
+            keyframe.composite = compositeString;
+        String timingFunctionString;
+        if (DictionaryHelper::get(keyframeDictionaryVector[i], "easing", timingFunctionString)) {
+            if (RefPtrWillBeRawPtr<CSSValue> timingFunctionValue = BisonCSSParser::parseAnimationTimingFunctionValue(timingFunctionString))
+                keyframe.easing = timingFunctionString;
+        }
+
+        Vector<String> holdProperties;
+        holdProperties.clear();
+        keyframe.pairs.clear();
+        keyframeDictionaryVector[i].getOwnPropertyNames(holdProperties);
+        for (size_t j = 0; j < holdProperties.size(); j++) {
+            String property = holdProperties[j];
+            String value;
+            DictionaryHelper::get(keyframeDictionaryVector[i], property, value);
+            ProxyPairs pair1 = {property, value};
+            keyframe.pairs.append(pair1);
+        }
+        holdVector.append(keyframe);
+    }
+    WorkerObjectProxy wop = workerGlobalScope->thread()->workerObjectProxy();
+    wop.postTaskToMainExecutionContext(createCrossThreadTask(&ProxyMap::execute, AllowCrossThreadAccess(page->m_ProxyMap.get()), Animate, temp, holdVector, ti));
+    return adoptRef(new RemotePlayer(m_id, workerGlobalScope, holdVector, ti));
+}
+
+} // namespace blink