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      1 /*
      2  * Copyright (C) 2009 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef JSDataGridDataSource_h
     27 #define JSDataGridDataSource_h
     28 
     29 #if ENABLE(DATAGRID)
     30 
     31 #include "DataGridDataSource.h"
     32 #include <heap/Strong.h>
     33 #include <runtime/JSValue.h>
     34 #include <wtf/PassRefPtr.h>
     35 #include <wtf/RefPtr.h>
     36 
     37 namespace WebCore {
     38 
     39 class Frame;
     40 class HTMLDataGridElement;
     41 
     42 class JSDataGridDataSource : public DataGridDataSource {
     43 public:
     44     static PassRefPtr<JSDataGridDataSource> create(JSC::JSValue dataSource, Frame* frame)
     45     {
     46         return adoptRef(new JSDataGridDataSource(dataSource, frame));
     47     }
     48 
     49     virtual ~JSDataGridDataSource();
     50 
     51     virtual bool isJSDataGridDataSource() const { return true; }
     52     JSC::JSValue jsDataSource() const { return m_dataSource.get(); }
     53 
     54 private:
     55     JSDataGridDataSource(JSC::JSValue, Frame*);
     56 
     57     JSC::ProtectedJSValue m_dataSource;
     58     RefPtr<Frame> m_frame;
     59 };
     60 
     61 inline JSDataGridDataSource* asJSDataGridDataSource(DataGridDataSource* dataSource)
     62 {
     63     ASSERT(dataSource->isJSDataGridDataSource());
     64     return static_cast<JSDataGridDataSource*>(dataSource);
     65 }
     66 
     67 inline const JSDataGridDataSource* asJSDataGridDataSource(const DataGridDataSource* dataSource)
     68 {
     69     ASSERT(dataSource->isJSDataGridDataSource());
     70     return static_cast<const JSDataGridDataSource*>(dataSource);
     71 }
     72 
     73 } // namespace WebCore
     74 
     75 #endif // ENABLE(DATAGRID)
     76 #endif // JSDataGridDataSource_h
     77