/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Mozilla Corporation.
 * Portions created by the Initial Developer are Copyright (C) 2006
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *    Josh Aas <josh@mozilla.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#ifndef nsDragService_h_
#define nsDragService_h_

#include "nsBaseDragService.h"

#include <Cocoa/Cocoa.h>

extern NSString* const kWildcardPboardType;
extern NSString* const kCorePboardType_url;
extern NSString* const kCorePboardType_urld;
extern NSString* const kCorePboardType_urln;

class nsDragService : public nsBaseDragService
{
public:
  nsDragService();
  virtual ~nsDragService();

  // nsIDragService
  NS_IMETHOD InvokeDragSession(nsIDOMNode *aDOMNode, nsISupportsArray * anArrayTransferables,
                               nsIScriptableRegion * aRegion, PRUint32 aActionType);
  NS_IMETHOD EndDragSession(bool aDoneDrag);

  // nsIDragSession
  NS_IMETHOD GetData(nsITransferable * aTransferable, PRUint32 aItemIndex);
  NS_IMETHOD IsDataFlavorSupported(const char *aDataFlavor, bool *_retval);
  NS_IMETHOD GetNumDropItems(PRUint32 * aNumItems);

private:

  NSImage* ConstructDragImage(nsIDOMNode* aDOMNode,
                              nsIntRect* aDragRect,
                              nsIScriptableRegion* aRegion);

  nsCOMPtr<nsISupportsArray> mDataItems; // only valid for a drag started within gecko
  NSView* mNativeDragView;
  NSEvent* mNativeDragEvent;
};

#endif // nsDragService_h_
