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Diffstat (limited to '')
-rw-r--r-- | src/libs/xpcom18a4/xpcom/threads/nsPIEventQueueChain.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/xpcom/threads/nsPIEventQueueChain.h b/src/libs/xpcom18a4/xpcom/threads/nsPIEventQueueChain.h new file mode 100644 index 00000000..8d3c0933 --- /dev/null +++ b/src/libs/xpcom18a4/xpcom/threads/nsPIEventQueueChain.h @@ -0,0 +1,93 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is Mozilla Communicator client code. + * + * The Initial Developer of the Original Code is + * Netscape Communications Corporation. + * Portions created by the Initial Developer are Copyright (C) 1998 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * + * Alternatively, the contents of this file may be used under the terms of + * either of the GNU General Public License Version 2 or later (the "GPL"), + * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ + +#ifndef nsPIEventQueueChain_h__ +#define nsPIEventQueueChain_h__ + +#include "nsISupports.h" + +// {8f310040-82a7-11d3-95bc-0060083a0bcf} +#define NS_IEVENTQUEUECHAIN_IID \ +{ 0x8f310040, 0x82a7, 0x11d3, { 0x95, 0xbc, 0x0, 0x60, 0x8, 0x3a, 0xb, 0xcf } } + +class nsIEventQueue; + +class nsPIEventQueueChain : public nsISupports +{ +public: + NS_DEFINE_STATIC_IID_ACCESSOR(NS_IEVENTQUEUECHAIN_IID); + + /** + * Add the given queue as the new youngest member of our chain. + * It will not be addrefed. + * @param aQueue the queue. must not be null. + * @return error indication + */ + NS_IMETHOD AppendQueue(nsIEventQueue *aQueue) = 0; + + /** + * Remove this element from the chain. + * @return NS_OK + */ + NS_IMETHOD Unlink() = 0; + + /** + * Fetch (and addref) the youngest member of the chain. + * @param *aQueue the youngest queue. aQueue must not be null. + * @return error indication + */ + NS_IMETHOD GetYoungest(nsIEventQueue **aQueue) = 0; + + /** + * Fetch (and addref) the youngest member of the chain which is + * still accepting events, or at least still contains events in need + * of processing. + * @param *aQueue the youngest such queue. aQueue must not be null. + * *aQueue will be returned null, if no such queue is found. + * @return error indication -- can be NS_OK even if *aQueue is 0 + */ + NS_IMETHOD GetYoungestActive(nsIEventQueue **aQueue) = 0; + + NS_IMETHOD SetYounger(nsPIEventQueueChain *aQueue) = 0; + NS_IMETHOD GetYounger(nsIEventQueue **aQueue) = 0; + + NS_IMETHOD SetElder(nsPIEventQueueChain *aQueue) = 0; + NS_IMETHOD GetElder(nsIEventQueue **aQueue) = 0; +}; + +#endif /* nsPIEventQueueChain_h___ */ + |