Dart bindings for WebKit

Source/WebCore/bindings/dart/DartScheduledAction.cpp

+/*
+ * Copyright (C) 2011 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 "DartScheduledAction.h"
+
+#include "Document.h"
+#include "DartController.h"
+#include "DartIsolateState.h"
+#include "DartUtilities.h"
+
+namespace WebCore {
+
+DartScheduledAction::DartScheduledAction(Dart_Isolate isolate, Dart_Handle action)
+{
+    m_isolate = isolate;
+    m_action = Dart_NewPersistentHandle(action);
+}
+
+DartScheduledAction::~DartScheduledAction()
+{
+    ASSERT(m_action);
+    DartIsolateState::push(m_isolate);
+    // FIXME: implement persistent handles tracking a la V8GCController::unregisterGlobalHandle.
+    Dart_DeletePersistentHandle(m_action);
+    m_action = 0;
+    // FIXME: We probably should ref count the isolate and
+    // shutdown if this is the last one.  This can happen if the
+    // isolate sets a listener on another frame and its original
+    // frame is closed.
+    DartIsolateState::pop();
+}
+
+void DartScheduledAction::execute(ScriptExecutionContext* context)
+{
+    DartController* dartController = DartController::retrieve(context);
+    ASSERT(dartController);
+    ASSERT(m_action);
+    DartIsolateState::push(m_isolate);
+    {
+        DartApiScope scope;
+        Dart_Handle result = dartController->callFunction(m_action, 0, 0);
+        if (Dart_IsError(result))
+            DartUtilities::reportProblem(context, result);
+    }
+    DartIsolateState::pop();
+}
+
+} // namespace WebCore