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/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */


#include "nsISupports.idl"
#include "nsITransferable.idl"
#include "nsIClipboardOwner.idl"

interface nsIArray;

[scriptable, uuid(ceaa0047-647f-4b8e-ad1c-aff9fa62aa51)]
interface nsIClipboard : nsISupports
{
    const long kSelectionClipboard = 0;
    const long kGlobalClipboard = 1;
    const long kFindClipboard = 2;
    // Used to cache current selection on (nsClipboard) for macOS service menu.
    const long kSelectionCache = 3;
    
   /**
    * Given a transferable, set the data on the native clipboard
    *
    * @param  aTransferable The transferable
    * @param  anOwner The owner of the transferable
    * @param  aWhichClipboard Specifies the clipboard to which this operation applies.
    * @result NS_Ok if no errors
    */
  
    void setData ( in nsITransferable aTransferable, in nsIClipboardOwner anOwner, 
                    in long aWhichClipboard ) ;

   /**
    * Given a transferable, get the clipboard data.
    *
    * @param  aTransferable The transferable
    * @param  aWhichClipboard Specifies the clipboard to which this operation applies.
    * @result NS_Ok if no errors
    */
  
    void getData ( in nsITransferable aTransferable, in long aWhichClipboard ) ;

   /**
    * This empties the clipboard and notifies the clipboard owner.
    * This empties the "logical" clipboard. It does not clear the native clipboard.
    *
    * @param  aWhichClipboard Specifies the clipboard to which this operation applies.
    * @result NS_OK if successful.
    */
  
    void emptyClipboard ( in long aWhichClipboard ) ;

   /**
    * This provides a way to give correct UI feedback about, for instance, a paste 
    * should be allowed. It does _NOT_ actually retreive the data and should be a very
    * inexpensive call. All it does is check if there is data on the clipboard matching
    * any of the flavors in the given list.
    *
    * @param  aFlavorList     An array of ASCII strings.
    * @param  aLength         The length of the aFlavorList.
    * @param  aWhichClipboard Specifies the clipboard to which this operation applies.
    * @outResult - if data is present matching one of 
    * @result NS_OK if successful.
    */
    boolean hasDataMatchingFlavors ( [array, size_is(aLength)] in string aFlavorList,
                                     in unsigned long aLength,
                                     in long aWhichClipboard ) ;

   /**
    * Allows clients to determine if the implementation supports the concept of a 
    * separate clipboard for selection.
    * 
    * @outResult - true if 
    * @result NS_OK if successful.
    */
    boolean supportsSelectionClipboard ( ) ;

    /**
    * Allows clients to determine if the implementation supports the concept of a
    * separate clipboard for find search strings.
    *
    * @result NS_OK if successful.
    */
    boolean supportsFindClipboard ( ) ;
};


%{ C++

%}