The Tor Browser: toolkit/obsolete/content/nsClipboard.js@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 /**

     7  * nsClipboard - wrapper around nsIClipboard and nsITransferable

     8  *               that simplifies access to the clipboard.

     9  **/

    10 var nsClipboard = {

    11   _CB: null,

    12   get mClipboard()

    13     {

    14       if (!this._CB)

    15         {

    16           const kCBContractID = "@mozilla.org/widget/clipboard;1";

    17           const kCBIID = Components.interfaces.nsIClipboard;

    18           this._CB = Components.classes[kCBContractID].getService(kCBIID);

    19         }

    20       return this._CB;

    21     },

    23   currentClipboard: null,

    24   /**

    25    * Array/Object read (Object aFlavourList, long aClipboard, Bool aAnyFlag) ;

    26    *

    27    * returns the data in the clipboard

    28    *

    29    * @param FlavourSet aFlavourSet

    30    *        formatted list of desired flavours

    31    * @param long aClipboard

    32    *        the clipboard to read data from (kSelectionClipboard/kGlobalClipboard)

    33    * @param Bool aAnyFlag

    34    *        should be false.

    35    **/

    36   read: function (aFlavourList, aClipboard, aAnyFlag)

    37     {

    38       this.currentClipboard = aClipboard;

    39       var data = nsTransferable.get(aFlavourList, this.getClipboardTransferable, aAnyFlag);

    40       return data.first.first;  // only support one item

    41     },

    43   /**

    44    * nsISupportsArray getClipboardTransferable (Object aFlavourList) ;

    45    *

    46    * returns a nsISupportsArray of the item on the clipboard

    47    *

    48    * @param Object aFlavourList

    49    *        formatted list of desired flavours.

    50    **/

    51   getClipboardTransferable: function (aFlavourList)

    52     {

    53       const supportsContractID = "@mozilla.org/supports-array;1";

    54       const supportsIID = Components.interfaces.nsISupportsArray;

    55       var supportsArray = Components.classes[supportsContractID].createInstance(supportsIID);

    56       var trans = nsTransferable.createTransferable();

    57       for (var flavour in aFlavourList)

    58         trans.addDataFlavor(flavour);

    59       nsClipboard.mClipboard.getData(trans, nsClipboard.currentClipboard)

    60       supportsArray.AppendElement(trans);

    61       return supportsArray;

    62     }

    63 };

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