pjs/content/base/public/nsCopySupport.h

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: NPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Netscape 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/NPL/
 *
 * 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 
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * 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 NPL, 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 NPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#include "nscore.h"
#include "nsCOMPtr.h"

class nsISelection;
class nsIDocument;
class nsIDOMNode;
class nsIDOMHTMLImageElement;
class nsIContent;
class nsIPresContext;
class nsIPresShell;
class nsIImageFrame;
class nsIImage;
class nsITransferable;
 
class nsCopySupport
{
  // class of static helper functions for copy support
  public:
    static nsresult HTMLCopy(nsISelection *aSel, nsIDocument *aDoc, PRInt16 aClipboardID);
    static nsresult DoHooks(nsIDocument *aDoc, nsITransferable *aTrans,
                            PRBool *aDoPutOnClipboard);
    static nsresult IsPlainTextContext(nsISelection *aSel, nsIDocument *aDoc, PRBool *aIsPlainTextContext);

    // Get the selection, or entire document, in the format specified by the mime type
    // (text/html or text/plain). If aSel is non-null, use it, otherwise get the entire
    // doc.
    static nsresult GetContents(const nsACString& aMimeType, PRUint32 aFlags, nsISelection *aSel, nsIDocument *aDoc, nsAString& outdata);
    
    static nsresult ImageCopy(nsIDOMHTMLImageElement* imageElement, PRInt16 aClipboardID);

  protected:
  
    // these are ripped from nsContentAreaDragDrop. This so needs factoring.    
    static nsresult GetImageFromDOMNode(nsIDOMNode* inNode, nsIImage**outImage);

};