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+/*
+ * Copyright (C) 2010 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 AsyncImageResizer_h
+#define AsyncImageResizer_h
+
+#if ENABLE(IMAGE_RESIZER)
+
+#include "Blob.h"
+#include "CachedResourceClient.h"
+#include "ScriptValue.h"
+
+namespace WebCore {
+
+class CachedImage;
+class ImageResizerThread;
+
+// AsyncImageResizer waits for the CachedImage that is passed in to load completely,
+// then starts an ImageResizerThread to resize the image. Once created, ImageResizerThread
+// becomes in charge of its own lifetime and that of AsyncImageResizer. After the callbacks
+// occur, both objects are destroyed. If the document is destroyed during resizing,
+// AsyncImageResizer will receive a notification and subsequently block the callbacks from
+// occurring.
+class AsyncImageResizer : public CachedResourceClient, public RefCounted<AsyncImageResizer> {
+public:
+    struct CallbackInfo {
+        CallbackInfo(PassRefPtr<AsyncImageResizer> asyncImageResizer)
+            : asyncImageResizer(asyncImageResizer)
+            , blob(0)
+        {
+        }
+
+        RefPtr<AsyncImageResizer> asyncImageResizer;
+        RefPtr<Blob> blob;
+    };
+    
+    enum OutputType {
+        JPEG,
+        PNG
+    };
+
+    enum AspectRatioOption {
+        PreserveAspectRatio,
+        IgnoreAspectRatio
+    };
+
+    enum OrientationOption {
+        CorrectOrientation,
+        IgnoreOrientation
+    };
+
+    static PassRefPtr<AsyncImageResizer> create(CachedImage*, OutputType, IntSize desiredBounds, ScriptValue successCallback, ScriptValue errorCallback, float quality, AspectRatioOption, OrientationOption);
+    ~AsyncImageResizer();
+
+    // FIXME: Insert override function for notification of document destruction (change m_callbacksOk).
+
+    void resizeComplete(RefPtr<Blob>) { /* FIXME: Not yet implemented. */ }
+    void resizeError() { /* FIXME: Not yet implemented. */ }
+
+private:
+    AsyncImageResizer(CachedImage*, OutputType, IntSize desiredBounds, ScriptValue successCallback, ScriptValue errorCallback, float quality, AspectRatioOption, OrientationOption);
+    virtual void notifyFinished(CachedResource*);
+
+    CachedImage* m_cachedImage;
+    ScriptValue m_successCallback;
+    ScriptValue m_errorCallback;
+    
+    // Parameters to pass into ImageResizerThread.
+    OutputType m_outputType;
+    IntSize m_desiredBounds;
+    float m_quality;
+    AspectRatioOption m_aspectRatioOption;
+    OrientationOption m_orientationOption;
+};
+
+} // namespace WebCore
+
+#endif // ENABLE(IMAGE_RESIZER)
+
+#endif // AsyncImageResizer_h