1 files changed, 39 insertions, 0 deletions
diff --git a/indra/newview/llcallbacklist.h b/indra/newview/llcallbacklist.h
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+++ b/indra/newview/llcallbacklist.h
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+/** 
+ * @file llcallbacklist.h
+ * @brief A simple list of callback functions to call.
+ *
+ * Copyright (c) 2001-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+#ifndef LL_LLCALLBACKLIST_H
+#define LL_LLCALLBACKLIST_H
+
+#include "llstl.h"
+
+class LLCallbackList
+{
+public:
+	typedef void (*callback_t)(void*);
+	
+	LLCallbackList();
+	~LLCallbackList();
+
+	void addFunction( callback_t func, void *data = NULL );		// register a callback, which will be called as func(data)
+	BOOL containsFunction( callback_t func, void *data = NULL );	// true if list already contains the function/data pair
+	BOOL deleteFunction( callback_t func, void *data = NULL );		// removes the first instance of this function/data pair from the list, false if not found
+	void callFunctions();												// calls all functions
+	void deleteAllFunctions();
+
+	static void test();
+
+protected:
+	// Use a list so that the callbacks are ordered in case that matters
+	typedef std::pair<callback_t,void*> callback_pair_t;
+	typedef std::list<callback_pair_t > callback_list_t;
+	callback_list_t	mCallbackList;
+};
+
+extern LLCallbackList gIdleCallbacks;
+
+#endif