/* -*- 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"

%{C++
#include "mozilla/MozPromise.h"

using DataFlavorsPromise = mozilla::MozPromise<nsTArray<nsCString>, nsresult, true>;
%}

interface nsIArray;

native AsyncGetDataPromise(RefPtr<mozilla::GenericPromise>);
native AsyncDataFlavorsPromise(RefPtr<DataFlavorsPromise>);

[scriptable, builtinclass, 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 ) ;

   /**
    * Filters the flavors aTransferable can import (see
    * `nsITransferable::flavorsTransferableCanImport`) and gets the data for the
    * first flavor. That data is set for aTransferable.
    *
    * @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  aWhichClipboard Specifies the clipboard to which this operation applies.
    * @outResult - if data is present matching one of
    * @result NS_OK if successful.
    */
    boolean hasDataMatchingFlavors ( in Array<ACString> aFlavorList,
                                     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 ( ) ;

    /**
     * Filters the flavors aTransferable can import (see
     * `nsITransferable::flavorsTransferableCanImport`) and gets the data for the
     * first flavor. That data is set for aTransferable.
     *
     * @param  aTransferable   The transferable
     * @param  aWhichClipboard Specifies the clipboard to which this operation applies.
     * @return MozPromise      The returned promise will resolve when the data is ready or reject
     *                         if any error occurs.
     */
    [noscript, notxpcom, nostdcall]
    AsyncGetDataPromise asyncGetData(in nsITransferable aTransferable, in long aWhichClipboard);

    /**
     * Check if there is data on the clipboard matching each of the flavors in the
     * given list.
     *
     * @param  aFlavorList     An array of ASCII strings.
     * @param  aWhichClipboard Specifies the clipboard to which this operation applies.
     * @return MozPromise      The returned promise will resolve with the list of matched flavors
     *                         when the check is completed or reject if any error occurs.
     */
    [noscript, notxpcom, nostdcall]
    AsyncDataFlavorsPromise asyncHasDataMatchingFlavors(in Array<ACString> aFlavorList, in long aWhichClipboard);
};