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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "config.h"
#include "web/SuspendableScriptExecutor.h"
#include "bindings/core/v8/ScriptController.h"
#include "core/dom/Document.h"
#include "core/frame/LocalFrame.h"
#include "platform/UserGestureIndicator.h"
#include "public/platform/WebVector.h"
#include "public/web/WebScriptExecutionCallback.h"
namespace blink {
void SuspendableScriptExecutor::createAndRun(LocalFrame* frame, int worldID, const Vector<ScriptSourceCode>& sources, int extensionGroup, bool userGesture, WebScriptExecutionCallback* callback)
{
RefPtrWillBeRawPtr<SuspendableScriptExecutor> executor = adoptRefWillBeNoop(new SuspendableScriptExecutor(frame, worldID, sources, extensionGroup, userGesture, callback));
executor->run();
executor->ref();
}
void SuspendableScriptExecutor::resume()
{
executeAndDestroySelf();
}
void SuspendableScriptExecutor::contextDestroyed()
{
// this method can only be called if the script was not called in run()
// and context remained suspend (method resume has never called)
ActiveDOMObject::contextDestroyed();
m_callback->completed(Vector<v8::Local<v8::Value>>());
deref();
}
SuspendableScriptExecutor::SuspendableScriptExecutor(LocalFrame* frame, int worldID, const Vector<ScriptSourceCode>& sources, int extensionGroup, bool userGesture, WebScriptExecutionCallback* callback)
: ActiveDOMObject(frame->document())
, m_frame(frame)
, m_worldID(worldID)
, m_sources(sources)
, m_extensionGroup(extensionGroup)
, m_userGesture(userGesture)
, m_callback(callback)
{
}
SuspendableScriptExecutor::~SuspendableScriptExecutor()
{
}
void SuspendableScriptExecutor::run()
{
suspendIfNeeded();
ExecutionContext* context = executionContext();
ASSERT(context);
if (context && !context->activeDOMObjectsAreSuspended())
executeAndDestroySelf();
}
void SuspendableScriptExecutor::executeAndDestroySelf()
{
// after calling the destructor of object - object will be unsubscribed from
// resumed and contextDestroyed LifecycleObserver methods
OwnPtr<UserGestureIndicator> indicator;
if (m_userGesture)
indicator = adoptPtr(new UserGestureIndicator(DefinitelyProcessingNewUserGesture));
v8::HandleScope scope(v8::Isolate::GetCurrent());
Vector<v8::Local<v8::Value>> results;
if (m_worldID) {
m_frame->script().executeScriptInIsolatedWorld(m_worldID, m_sources, m_extensionGroup, &results);
} else {
v8::Local<v8::Value> scriptValue = m_frame->script().executeScriptInMainWorldAndReturnValue(m_sources.first());
results.append(scriptValue);
}
m_callback->completed(results);
deref();
}
void SuspendableScriptExecutor::trace(Visitor* visitor)
{
visitor->trace(m_frame);
ActiveDOMObject::trace(visitor);
}
} // namespace blink
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