Second Life viewer sources 1.13.2.12

1 files changed, 99 insertions, 0 deletions

diff --git a/linden/indra/llmessage/llcallbacklisth.h b/linden/indra/llmessage/llcallbacklisth.h
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+/** 
+ * @file llcallbacklisth.h
+ * @brief Like LLCallbackList but uses handles instead of pointers for
+ * user data
+ *
+ * Copyright (c) 2002-2007, Linden Research, Inc.
+ * 
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlife.com/developers/opensource/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at http://secondlife.com/developers/opensource/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ */
+
+#ifndef LL_LLCALLBACKLISTH_H
+#define LL_LLCALLBACKLISTH_H
+
+#include "doublelinkedlist.h"
+
+typedef void(*LLHandleCallback)(void** handle );
+
+class LLCallbackNodeH;
+
+class LLCallbackListH
+{
+protected:
+        class LLCallbackNodeH
+        {
+        public:
+                LLCallbackNodeH( LLHandleCallback cb, void** h ) : mCallback(cb), mHandle(h) {}
+                void    call()                                  { (*mCallback)(mHandle); }
+
+        public:
+                LLHandleCallback        mCallback;
+                void**  mHandle;
+        };
+
+public:
+        ~LLCallbackListH()
+                { mCallbackList.deleteAllData(); }
+
+        void addFunction( LLHandleCallback func, void** handle = NULL )                 // register a callback, which will be called as func(data)
+                { mCallbackList.addDataAtEnd( new LLCallbackNodeH( func, handle ) ); }
+
+        BOOL containsFunction( LLHandleCallback func, void** handle = NULL )    // true if list already contains the function/data pair
+                {
+                        for( LLCallbackNodeH *p = mCallbackList.getFirstData(); p; p = mCallbackList.getNextData() )
+                        {
+                                if( p->mCallback == func && p->mHandle == handle)
+                                {
+                                        return TRUE;
+                                }
+                        }
+                        return FALSE;
+                }
+
+        BOOL deleteFunction( LLHandleCallback func, void** handle = NULL )              // removes the first instance of this function/data pair from the list, false if not found
+                {
+                        for( LLCallbackNodeH *p = mCallbackList.getFirstData(); p; p = mCallbackList.getNextData() )
+                        {
+                                if( p->mCallback == func && p->mHandle == handle)
+                                {
+                                        mCallbackList.deleteCurrentData();
+                                        return TRUE;
+                                }
+                        }
+                        return FALSE;
+                }
+
+        void callFunctions()                                                                                                    // calls all functions
+                {
+                        for( LLCallbackNodeH *p = mCallbackList.getFirstData(); p; p = mCallbackList.getNextData() )
+                        {
+                                p->call();
+                        }
+                }
+
+        void deleteAllFunctions()
+                { mCallbackList.deleteAllData(); }
+
+protected:
+        LLDoubleLinkedList<LLCallbackNodeH>     mCallbackList;
+};
+
+#endif  // LL_LLCALLBACKLISTH_H