1 files changed, 92 insertions, 0 deletions
diff --git a/Source/WebCore/dom/AsyncScriptRunner.cpp b/Source/WebCore/dom/AsyncScriptRunner.cpp
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+++ b/Source/WebCore/dom/AsyncScriptRunner.cpp
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+/*
+ * Copyright (C) 2010 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:
+ * 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 APPLE INC. ``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 APPLE INC. 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 "AsyncScriptRunner.h"
+
+#include "CachedScript.h"
+#include "Document.h"
+#include "Element.h"
+#include "PendingScript.h"
+#include "ScriptElement.h"
+
+namespace WebCore {
+
+AsyncScriptRunner::AsyncScriptRunner(Document* document)
+    : m_document(document)
+    , m_timer(this, &AsyncScriptRunner::timerFired)
+{
+    ASSERT(document);
+}
+
+AsyncScriptRunner::~AsyncScriptRunner()
+{
+    for (size_t i = 0; i < m_scriptsToExecuteSoon.size(); ++i)
+        m_document->decrementLoadEventDelayCount();
+}
+
+void AsyncScriptRunner::executeScriptSoon(ScriptElement* scriptElement, CachedResourceHandle<CachedScript> cachedScript)
+{
+    ASSERT_ARG(scriptElement, scriptElement);
+
+    Element* element = scriptElement->element();
+    ASSERT(element);
+    ASSERT(element->inDocument());
+
+    m_document->incrementLoadEventDelayCount();
+    m_scriptsToExecuteSoon.append(PendingScript(element, cachedScript.get()));
+    if (!m_timer.isActive())
+        m_timer.startOneShot(0);
+}
+
+void AsyncScriptRunner::suspend()
+{
+    m_timer.stop();
+}
+
+void AsyncScriptRunner::resume()
+{
+    if (hasPendingScripts())
+        m_timer.startOneShot(0);
+}
+
+void AsyncScriptRunner::timerFired(Timer<AsyncScriptRunner>* timer)
+{
+    ASSERT_UNUSED(timer, timer == &m_timer);
+
+    RefPtr<Document> protect(m_document);
+    
+    Vector<PendingScript> scripts;
+    scripts.swap(m_scriptsToExecuteSoon);
+    size_t size = scripts.size();
+    for (size_t i = 0; i < size; ++i) {
+        CachedScript* cachedScript = scripts[i].cachedScript();
+        RefPtr<Element> element = scripts[i].releaseElementAndClear();
+        toScriptElement(element.get())->execute(cachedScript);
+        m_document->decrementLoadEventDelayCount();
+    }
+}
+
+}