Expose Web Animations API to Web Workers

Source/core/wawwa/ProxyPlayer.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/ProxyPlayer.h"
+
+#include "core/animation/AnimationTimeline.h"
+#include "core/page/Page.h"
+#include "core/wawwa/ListOfElements.cpp"
+
+namespace blink {
+
+ProxyPlayer::ProxyPlayer(String id, Vector<ProxyKeyframe> keyframes, Timing timingInputDictionary, ExceptionState& es, PassRefPtr<Worker> worker)
+    : m_worker(worker)
+    , m_target(toDocument(m_worker->executionContext())->documentElement()->querySelector(*(new AtomicString(id)), es))
+{
+    m_elemID = id;
+    m_player = 0;
+    for (size_t i = 0; i < keyframes.size(); i++) {
+        m_keyframes.append(keyframes[i]);
+    }
+    m_timingInputDictionary = timingInputDictionary;
+    animated = false;
+    reported = false;
+}
+
+void ProxyPlayer::execute(String val, ExceptionState& es)
+{
+    StyleSheetContents* styleSheetContents = m_target->document().elementSheet().contents();
+    StringKeyframeVector keyframes;
+    for (size_t i = 0; i < m_keyframes.size(); ++i) {
+        RefPtrWillBeRawPtr<StringKeyframe> keyframe = StringKeyframe::create();
+
+        if (m_keyframes[i].offset != 2) {
+            keyframe->setOffset(m_keyframes[i].offset);
+        }
+        if (m_keyframes[i].composite == "add")
+            keyframe->setComposite(AnimationEffect::CompositeAdd);
+        if (m_keyframes[i].easing.length() > 0) {
+            RefPtrWillBeRawPtr<CSSValue> timingFunctionValue = BisonCSSParser::parseAnimationTimingFunctionValue(m_keyframes[i].easing);
+            keyframe->setEasing(CSSToStyleMap::mapAnimationTimingFunction(timingFunctionValue.get(), true));
+        }
+
+        for (size_t j = 0; j < m_keyframes[i].pairs.size(); ++j) {
+            keyframe->setPropertyValue(camelCaseCSSPropertyNameToID(m_keyframes[i].pairs[j].property), m_keyframes[i].pairs[j].value, styleSheetContents);
+        }
+        keyframes.append(keyframe);
+    }
+    RefPtrWillBeRawPtr<StringKeyframeEffectModel> keyframeEffectModel = StringKeyframeEffectModel::create(keyframes);
+    if (!keyframeEffectModel->isReplaceOnly()) {
+        es.throwDOMException(NotSupportedError, "Partial keyframes are not supported.");
+        return;
+    }
+    keyframeEffectModel->forceConversionsToAnimatableValues(m_target.get());
+    if (val == "animate_element") {
+        if (!m_player) {
+            Document* doc = toDocument(m_worker->executionContext());
+            m_player = doc->timeline().play(Animation::create(m_target.get(), keyframeEffectModel, m_timingInputDictionary).get());
+            animated = true;
+        } else {
+            m_player->play();
+        }
+    } else if (val == "pause_element") {
+        m_player->pause();
+    } else if (val == "reverse_element") {
+        m_player->reverse();
+    } else if (val == "finish_element") {
+        m_player->finish(es);
+    } else if (val == "cancel_element") {
+        m_player->cancel();
+    } else if (val == "play_element") {
+        m_player->play();
+    }

[shans, 2014/08/25 11:53:59]

with an enum, you'll be able to use a switch statement here.

+}
+
+void ProxyPlayer::reportTime()
+{
+    if (!isnan(m_player->startTime())) {
+        Document* doc = toDocument(m_worker->executionContext());
+        WorkerMessagingProxy* mp = static_cast<WorkerMessagingProxy*>(m_worker->m_contextProxy);
+        WorkerGlobalScope* hold = mp->passObject();
+        if (hold) {
+            mp->postTaskToLoader(createCrossThreadTask(&ListOfElements::reportTime, AllowCrossThreadAccess(doc->page()->m_listOfElements.get()), m_elemID, m_player->startTime()));
+        }
+        reported = true;
+    }
+}
+
+} // namespace blink