mirror of
https://github.com/rn10950/RetroZilla.git
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117 lines
4.3 KiB
JavaScript
117 lines
4.3 KiB
JavaScript
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2001
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Joe Hewitt <hewitt@netscape.com> (original author)
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/***************************************************************
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* DNDUtils -------------------------------------------------
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* Utility functions for common drag and drop tasks.
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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* REQUIRED IMPORTS:
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****************************************************************/
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//////////// global variables /////////////////////
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var app;
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//////////// global constants ////////////////////
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////////////////////////////////////////////////////////////////////////////
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//// class DNDUtils
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var DNDUtils =
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{
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invokeSession: function(aTarget, aTypes, aValues)
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{
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var transData, trans, supports;
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var transArray = XPCU.createInstance("@mozilla.org/supports-array;1", "nsISupportsArray");
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for (var i = 0; i < aTypes.length; ++i) {
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transData = this.createTransferableData(aValues[i]);
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trans = XPCU.createInstance("@mozilla.org/widget/transferable;1", "nsITransferable");
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trans.addDataFlavor(aTypes[i]);
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trans.setTransferData (aTypes[i], transData.data, transData.size);
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supports = trans.QueryInterface(Components.interfaces.nsISupports);
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transArray.AppendElement(supports);
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}
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var nsIDragService = Components.interfaces.nsIDragService;
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var dragService = XPCU.getService("@mozilla.org/widget/dragservice;1", "nsIDragService");
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dragService.invokeDragSession(aTarget, transArray, null, nsIDragService.DRAGDROP_ACTION_MOVE);
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},
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createTransferableData: function(aValue)
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{
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var obj = {};
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if (typeof(aValue) == "string") {
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obj.data = XPCU.createInstance("@mozilla.org/supports-string;1", "nsISupportsString");
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obj.data.data = aValue;
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obj.size = aValue.length*2;
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} else if (false) {
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// TODO: create data for other primitive types
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}
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return obj;
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},
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checkCanDrop: function(aType)
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{
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var dragService = XPCU.getService("@mozilla.org/widget/dragservice;1", "nsIDragService");
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var dragSession = dragService.getCurrentSession();
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var gotFlavor = false;
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for (var i = 0; i < arguments.length; ++i)
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gotFlavor |= dragSession.isDataFlavorSupported(arguments[i]);
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dragSession.canDrop = gotFlavor;
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return gotFlavor;
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},
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getData: function(aType, aIndex)
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{
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var dragService = XPCU.getService("@mozilla.org/widget/dragservice;1", "nsIDragService");
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var dragSession = dragService.getCurrentSession();
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var trans = XPCU.createInstance("@mozilla.org/widget/transferable;1", "nsITransferable");
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trans.addDataFlavor(aType);
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dragSession.getData(trans, aIndex);
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var data = new Object();
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trans.getAnyTransferData ({}, data, {});
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return data.value;
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}
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};
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