Dart bindings for WebKit

Source/WebCore/bindings/dart/DartController.h

+// Copyright 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.
+
+#ifndef DartController_h
+#define DartController_h
+
+#include "DartApplicationLoader.h"
+#include "ScriptSourceCode.h"
+
+#include <dart_api.h>
+#include <wtf/Vector.h>
+#include <wtf/text/WTFString.h>
+
+struct NPObject;
+
+namespace WebCore {
+
+class Frame;
+class ScriptExecutionContext;
+
+// VM state per single Dart <SCRIPT> tag.
+class DartPerScriptState {
+public:
+    PassRefPtr<DartApplicationLoader> dartApplicationLoader() { return m_dartApplicationLoader; }
+    Dart_Isolate isolate() { return m_isolate; }
+
+    DartPerScriptState(Document*, NPObject* layoutTestController);
+    ~DartPerScriptState();
+
+private:
+    RefPtr<DartApplicationLoader> m_dartApplicationLoader;
+    Dart_Isolate m_isolate;
+};
+
+// This class provides the linkage between a Frame and its attached
+// Dart isolates. It is similar to ScriptController for JavaScript.
+// The DartController is owned by its Frame.
+class DartController {
+public:
+    DartController(Frame*);
+
+    bool isScriptTypeSupported(const String& mimeType);
+    void evaluate(const ScriptSourceCode&);
+
+    // Creates a property of the global object of a frame.
+    void bindToWindowObject(Frame*, const String& key, NPObject*);
+
+    // FIXME: proper implementation.
+    static bool processingUserGesture() { return false; }
+
+    void clearWindowShell();
+
+    Dart_Handle callFunction(Dart_Handle function, int argc, Dart_Handle* argv);
+
+    Frame* frame() const { return m_frame; }
+
+    static DartController* retrieve(Frame*);
+    static DartController* retrieve(ScriptExecutionContext*);
+
+    static void setDartVMFlags(const String&);
+
+    static void setupDOMEnabledIsolate(ScriptExecutionContext*);
+
+private:
+    static void initVMIfNeeded();
+    static bool initializeIsolateCallback(void*, char** errorMsg);
+
+    void didLeaveScriptContext(int recursion);
+
+    // The frame that owns this controller.
+    Frame* m_frame;
+
+    typedef Vector< OwnPtr<DartPerScriptState> > DartScriptsList;
+    // Dart VM states associated with scripts in this document.
+    DartScriptsList m_states;
+
+    // NPObject for layoutTestController if any.
+    NPObject* m_layoutTestController;
+};
+
+}
+
+#endif // DartController_h