Merge WebKit at r82507: Initial merge by git

Change-Id: I60ce9d780725b58b45e54165733a8ffee23b683e

1 files changed, 119 insertions, 0 deletions

diff --git a/Source/WebCore/dom/ScriptRunner.cpp b/Source/WebCore/dom/ScriptRunner.cpp
new file mode 100644
index 0000000..10198bf
--- /dev/null
+++ b/Source/WebCore/dom/ScriptRunner.cpp
@@ -0,0 +1,119 @@
+/*
+ * 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 "ScriptRunner.h"
+
+#include "CachedScript.h"
+#include "Document.h"
+#include "Element.h"
+#include "PendingScript.h"
+#include "ScriptElement.h"
+
+namespace WebCore {
+
+ScriptRunner::ScriptRunner(Document* document)
+    : m_document(document)
+    , m_timer(this, &ScriptRunner::timerFired)
+{
+    ASSERT(document);
+}
+
+ScriptRunner::~ScriptRunner()
+{
+    for (size_t i = 0; i < m_scriptsToExecuteSoon.size(); ++i)
+        m_document->decrementLoadEventDelayCount();
+    for (size_t i = 0; i < m_scriptsToExecuteInOrder.size(); ++i)
+        m_document->decrementLoadEventDelayCount();
+}
+
+void ScriptRunner::queueScriptForExecution(ScriptElement* scriptElement, CachedResourceHandle<CachedScript> cachedScript, ExecutionType executionType)
+{
+    ASSERT(scriptElement);
+
+    Element* element = scriptElement->element();
+    ASSERT(element);
+    ASSERT(element->inDocument());
+
+    m_document->incrementLoadEventDelayCount();
+
+    switch (executionType) {
+    case ASYNC_EXECUTION:
+        m_scriptsToExecuteSoon.append(PendingScript(element, cachedScript.get()));
+        if (!m_timer.isActive())
+            m_timer.startOneShot(0);
+        break;
+
+    case IN_ORDER_EXECUTION:
+        m_scriptsToExecuteInOrder.append(PendingScript(element, cachedScript.get()));
+        break;
+
+    default:
+        ASSERT_NOT_REACHED();
+    }
+}
+
+void ScriptRunner::suspend()
+{
+    m_timer.stop();
+}
+
+void ScriptRunner::resume()
+{
+    if (hasPendingScripts())
+        m_timer.startOneShot(0);
+}
+
+void ScriptRunner::notifyInOrderScriptReady()
+{
+    ASSERT(!m_scriptsToExecuteInOrder.isEmpty());
+    m_timer.startOneShot(0);
+}
+
+void ScriptRunner::timerFired(Timer<ScriptRunner>* timer)
+{
+    ASSERT_UNUSED(timer, timer == &m_timer);
+
+    RefPtr<Document> protect(m_document);
+
+    Vector<PendingScript> scripts;
+    scripts.swap(m_scriptsToExecuteSoon);
+
+    size_t numInOrderScriptsToExecute = 0;
+    for (; numInOrderScriptsToExecute < m_scriptsToExecuteInOrder.size() && m_scriptsToExecuteInOrder[numInOrderScriptsToExecute].cachedScript()->isLoaded(); ++numInOrderScriptsToExecute)
+        scripts.append(m_scriptsToExecuteInOrder[numInOrderScriptsToExecute]);
+    if (numInOrderScriptsToExecute)
+        m_scriptsToExecuteInOrder.remove(0, numInOrderScriptsToExecute);
+
+    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();
+    }
+}
+
+}