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lightning-sunbird  0.9+nobinonly
nsDocShellTransferableHooks.cpp
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00001 /* ***** BEGIN LICENSE BLOCK *****
00002  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00003  *
00004  * The contents of this file are subject to the Mozilla Public License Version
00005  * 1.1 (the "License"); you may not use this file except in compliance with
00006  * the License. You may obtain a copy of the License at
00007  * http://www.mozilla.org/MPL/
00008  *
00009  * Software distributed under the License is distributed on an "AS IS" basis,
00010  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00011  * for the specific language governing rights and limitations under the
00012  * License.
00013  *
00014  * The Original Code is Mozilla Communicator.
00015  *
00016  * The Initial Developer of the Original Code is
00017  * Netscape Communications.
00018  * Portions created by the Initial Developer are Copyright (C) 2003
00019  * the Initial Developer. All Rights Reserved.
00020  *
00021  * Contributor(s):
00022  *  Kathleen Brade <brade@netscape.com>
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either the GNU General Public License Version 2 or later (the "GPL"), or
00026  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027  * in which case the provisions of the GPL or the LGPL are applicable instead
00028  * of those above. If you wish to allow use of your version of this file only
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00032  * and other provisions required by the GPL or the LGPL. If you do not delete
00033  * the provisions above, a recipient may use your version of this file under
00034  * the terms of any one of the MPL, the GPL or the LGPL.
00035  *
00036  * ***** END LICENSE BLOCK ***** */
00037 
00038 #include "nsCOMPtr.h"
00039 #include "nsCOMArray.h"
00040 #include "nsDocShellTransferableHooks.h"
00041 #include "nsIClipboardDragDropHooks.h"
00042 #include "nsIClipboardDragDropHookList.h"
00043 #include "nsISimpleEnumerator.h"
00044 #include "nsArrayEnumerator.h"
00045 
00046 nsTransferableHookData::nsTransferableHookData()
00047 {
00048 }
00049 
00050 
00051 nsTransferableHookData::~nsTransferableHookData()
00052 {
00053 }
00054 
00055 //*****************************************************************************
00056 // nsIClipboardDragDropHookList
00057 //*****************************************************************************
00058 
00059 NS_IMPL_ISUPPORTS1(nsTransferableHookData, nsIClipboardDragDropHookList)
00060 
00061 NS_IMETHODIMP
00062 nsTransferableHookData::AddClipboardDragDropHooks(
00063                                         nsIClipboardDragDropHooks *aOverrides)
00064 {
00065     NS_ENSURE_ARG(aOverrides);
00066 
00067     // don't let a hook be added more than once
00068     if (mHookList.IndexOfObject(aOverrides) == -1)
00069     {
00070         if (!mHookList.AppendObject(aOverrides))
00071             return NS_ERROR_FAILURE;
00072     }
00073 
00074     return NS_OK;
00075 }
00076 
00077 NS_IMETHODIMP
00078 nsTransferableHookData::RemoveClipboardDragDropHooks(
00079                                          nsIClipboardDragDropHooks *aOverrides)
00080 {
00081     NS_ENSURE_ARG(aOverrides);
00082     if (!mHookList.RemoveObject(aOverrides))
00083         return NS_ERROR_FAILURE;
00084 
00085     return NS_OK;
00086 }
00087 
00088 NS_IMETHODIMP
00089 nsTransferableHookData::GetHookEnumerator(nsISimpleEnumerator **aResult)
00090 {
00091     return NS_NewArrayEnumerator(aResult, mHookList);
00092 }