Introduce ExecutionContextClient

Source/core/dom/ExecutionContextClient.h

+/*
+ * Copyright (C) 2013 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.
+ *     * 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.
+ */
+
+#ifndef ExecutionContextClient_h
+#define ExecutionContextClient_h
+
+#include "core/frame/ConsoleTypes.h"
+#include "core/platform/LifecycleNotifier.h"
+#include "wtf/Forward.h"
+#include "wtf/PassRefPtr.h"
+#include "wtf/text/WTFString.h"
+
+namespace WebCore {
+
+class DOMWindow;
+class EventQueue;
+class EventTarget;
+class ExecutionContextTask;
+class KURL;
+class LifecycleNotifier;
+class ScriptCallStack;
+class ScriptState;
+class SecurityContext;
+
+class ExecutionContextClient {
+public:
+    virtual void postTask(PassOwnPtr<ExecutionContextTask>) = 0; // Executes the task on context's thread asynchronously.
+
+    virtual bool isDocument() const { return false; }
+    virtual bool isWorkerGlobalScope() const { return false; }
+
+    virtual bool isJSExecutionForbidden() const = 0;
+    virtual DOMWindow* executingWindow() { return 0; }
+    virtual void userEventWasHandled() { }
+    virtual String userAgent(const KURL&) const = 0;
+    virtual void disableEval(const String& errorMessage) = 0;
+    virtual EventQueue* eventQueue() const = 0;
+    virtual const KURL& virtualURL() const = 0;
+    virtual KURL virtualCompleteURL(const String&) const = 0;
+    virtual void addMessage(MessageSource, MessageLevel, const String& message, const String& sourceURL, unsigned lineNumber, ScriptState*) = 0;
+    virtual EventTarget* errorEventTarget() = 0;
+    virtual void logExceptionToConsole(const String& errorMessage, const String& sourceURL, int lineNumber, int columnNumber, PassRefPtr<ScriptCallStack>) = 0;
+    virtual double timerAlignmentInterval() const = 0;
+    virtual PassOwnPtr<LifecycleNotifier> createLifecycleNotifier() = 0;
+
+protected:
+    virtual ~ExecutionContextClient() { }
+};
+
+} // namespace
+
+#endif