michael@0: /* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: /** 
michael@0:  * nsClipboard - wrapper around nsIClipboard and nsITransferable
michael@0:  *               that simplifies access to the clipboard. 
michael@0:  **/ 
michael@0: var nsClipboard = {
michael@0:   _CB: null,
michael@0:   get mClipboard()
michael@0:     {
michael@0:       if (!this._CB) 
michael@0:         {
michael@0:           const kCBContractID = "@mozilla.org/widget/clipboard;1";
michael@0:           const kCBIID = Components.interfaces.nsIClipboard;
michael@0:           this._CB = Components.classes[kCBContractID].getService(kCBIID);
michael@0:         }
michael@0:       return this._CB;
michael@0:     },
michael@0:     
michael@0:   currentClipboard: null,
michael@0:   /** 
michael@0:    * Array/Object read (Object aFlavourList, long aClipboard, Bool aAnyFlag) ;
michael@0:    *
michael@0:    * returns the data in the clipboard
michael@0:    * 
michael@0:    * @param FlavourSet aFlavourSet
michael@0:    *        formatted list of desired flavours
michael@0:    * @param long aClipboard
michael@0:    *        the clipboard to read data from (kSelectionClipboard/kGlobalClipboard)
michael@0:    * @param Bool aAnyFlag
michael@0:    *        should be false.
michael@0:    **/
michael@0:   read: function (aFlavourList, aClipboard, aAnyFlag)
michael@0:     {
michael@0:       this.currentClipboard = aClipboard;
michael@0:       var data = nsTransferable.get(aFlavourList, this.getClipboardTransferable, aAnyFlag);
michael@0:       return data.first.first;  // only support one item
michael@0:     },
michael@0:     
michael@0:   /**
michael@0:    * nsISupportsArray getClipboardTransferable (Object aFlavourList) ;
michael@0:    * 
michael@0:    * returns a nsISupportsArray of the item on the clipboard
michael@0:    *
michael@0:    * @param Object aFlavourList
michael@0:    *        formatted list of desired flavours.
michael@0:    **/
michael@0:   getClipboardTransferable: function (aFlavourList)
michael@0:     {
michael@0:       const supportsContractID = "@mozilla.org/supports-array;1";
michael@0:       const supportsIID = Components.interfaces.nsISupportsArray;
michael@0:       var supportsArray = Components.classes[supportsContractID].createInstance(supportsIID);
michael@0:       var trans = nsTransferable.createTransferable();
michael@0:       for (var flavour in aFlavourList) 
michael@0:         trans.addDataFlavor(flavour);
michael@0:       nsClipboard.mClipboard.getData(trans, nsClipboard.currentClipboard)
michael@0:       supportsArray.AppendElement(trans);
michael@0:       return supportsArray;
michael@0:     }
michael@0: };
michael@0: