IndexedDB Observers

third_party/WebKit/Source/bindings/modules/v8/V8IDBObserverCallback.cpp

+// Copyright 2016 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 "bindings/modules/v8/V8IDBObserverCallback.h"
+
+#include "bindings/core/v8/ScriptController.h"
+#include "bindings/core/v8/V8Binding.h"
+#include "bindings/modules/v8/V8IDBObserver.h"
+#include "core/dom/ExecutionContext.h"
+#include "wtf/Assertions.h"
+
+namespace blink {
+
+V8IDBObserverCallback::V8IDBObserverCallback(v8::Local<v8::Function> callback, v8::Local<v8::Object> owner, ScriptState* scriptState)
+    : ActiveDOMCallback(scriptState->getExecutionContext())
+    , m_callback(scriptState->isolate(), callback)
+    , m_scriptState(scriptState)
+{
+    V8HiddenValue::setHiddenValue(scriptState, owner, V8HiddenValue::callback(scriptState->isolate()), callback);
+    m_callback.setWeak(this, &setWeakCallback);
+}
+
+V8IDBObserverCallback::~V8IDBObserverCallback()
+{
+}
+
+void V8IDBObserverCallback::setWeakCallback(const v8::WeakCallbackInfo<V8IDBObserverCallback>& data)
+{
+    data.GetParameter()->m_callback.clear();
+}
+
+DEFINE_TRACE(V8IDBObserverCallback)
+{
+    IDBObserverCallback::trace(visitor);
+    ActiveDOMCallback::trace(visitor);
+}
+
+} // namespace blink