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___ */
+