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      1 /*
      2  * Copyright (C) 2009 Google 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 are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 
     32 #ifndef V8DataGridDataSource_h
     33 #define V8DataGridDataSource_h
     34 
     35 #if ENABLE(DATAGRID)
     36 
     37 #include "DataGridDataSource.h"
     38 #include <v8.h>
     39 #include <wtf/PassRefPtr.h>
     40 #include <wtf/RefPtr.h>
     41 
     42 namespace WebCore {
     43 
     44 class Frame;
     45 class HTMLDataGridElement;
     46 
     47 class V8DataGridDataSource : public DataGridDataSource {
     48 public:
     49     static PassRefPtr<V8DataGridDataSource> create(v8::Handle<v8::Value> dataSource, Frame* frame)
     50     {
     51         return adoptRef(new V8DataGridDataSource(dataSource, frame));
     52     }
     53 
     54     virtual ~V8DataGridDataSource();
     55 
     56     virtual bool isJSDataGridDataSource() const { return true; }
     57     v8::Handle<v8::Value> jsDataSource() const { return m_dataSource; }
     58 
     59 private:
     60     V8DataGridDataSource(v8::Handle<v8::Value>, Frame*);
     61 
     62     v8::Persistent<v8::Value> m_dataSource;
     63     RefPtr<Frame> m_frame;
     64 };
     65 
     66 inline V8DataGridDataSource* asV8DataGridDataSource(DataGridDataSource* dataSource)
     67 {
     68     ASSERT(dataSource->isJSDataGridDataSource());
     69     return static_cast<V8DataGridDataSource*>(dataSource);
     70 }
     71 
     72 inline const V8DataGridDataSource* asV8DataGridDataSource(const DataGridDataSource* dataSource)
     73 {
     74     ASSERT(dataSource->isJSDataGridDataSource());
     75     return static_cast<const V8DataGridDataSource*>(dataSource);
     76 }
     77 
     78 } // namespace WebCore
     79 
     80 #endif // ENABLE(DATAGRID)
     81 #endif // V8DataGridDataSource_h
     82