Move llhandle.h into llcommon; same generality as llpointer.h.

Leaving llhandle.h in llui restricts the set of viewer project directories
which could potentially use it, and there's nothing whatsoever UI-specific
about it.

2 files changed, 0 insertions, 182 deletions

diff --git a/indra/llui/CMakeLists.txt b/indra/llui/CMakeLists.txt
index cca4ca3981..d92b6aa1c0 100644
--- a/indra/llui/CMakeLists.txt
+++ b/indra/llui/CMakeLists.txt
@@ -155,7 +155,6 @@ set(llui_HEADER_FILES
     llflyoutbutton.h 
     llfocusmgr.h
     llfunctorregistry.h
-    llhandle.h
     llhelp.h
     lliconctrl.h
     llkeywords.h
diff --git a/indra/llui/llhandle.h b/indra/llui/llhandle.h
deleted file mode 100644
index 37c657dd92..0000000000
--- a/indra/llui/llhandle.h
+++ /dev/null
@@ -1,181 +0,0 @@
-/** 
-* @file llhandle.h
-* @brief "Handle" to an object (usually a floater) whose lifetime you don't
-* control.
-*
-* $LicenseInfo:firstyear=2001&license=viewerlgpl$
-* Second Life Viewer Source Code
-* Copyright (C) 2010, Linden Research, Inc.
-* 
-* This library is free software; you can redistribute it and/or
-* modify it under the terms of the GNU Lesser General Public
-* License as published by the Free Software Foundation;
-* version 2.1 of the License only.
-* 
-* This library is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-* Lesser General Public License for more details.
-* 
-* You should have received a copy of the GNU Lesser General Public
-* License along with this library; if not, write to the Free Software
-* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
-* 
-* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
-* $/LicenseInfo$
-*/
-#ifndef LLHANDLE_H
-#define LLHANDLE_H
-
-#include "llpointer.h"
-#include <boost/type_traits/is_convertible.hpp>
-#include <boost/utility/enable_if.hpp>
-
-class LLTombStone : public LLRefCount
-{
-public:
-	LLTombStone(void* target = NULL) : mTarget(target) {}
-
-	void setTarget(void* target) { mTarget = target; }
-	void* getTarget() const { return mTarget; }
-private:
-	mutable void* mTarget;
-};
-
-//	LLHandles are used to refer to objects whose lifetime you do not control or influence.  
-//	Calling get() on a handle will return a pointer to the referenced object or NULL, 
-//	if the object no longer exists.  Note that during the lifetime of the returned pointer, 
-//	you are assuming that the object will not be deleted by any action you perform, 
-//	or any other thread, as normal when using pointers, so avoid using that pointer outside of
-//	the local code block.
-// 
-//  https://wiki.lindenlab.com/mediawiki/index.php?title=LLHandle&oldid=79669
-
-template <typename T>
-class LLHandle
-{
-	template <typename U> friend class LLHandle;
-	template <typename U> friend class LLHandleProvider;
-public:
-	LLHandle() : mTombStone(getDefaultTombStone()) {}
-
-	template<typename U>
-	LLHandle(const LLHandle<U>& other, typename boost::enable_if< typename boost::is_convertible<U*, T*> >::type* dummy = 0)
-	: mTombStone(other.mTombStone)
-	{}
-
-	bool isDead() const 
-	{ 
-		return mTombStone->getTarget() == NULL; 
-	}
-
-	void markDead() 
-	{ 
-		mTombStone = getDefaultTombStone();
-	}
-
-	T* get() const
-	{
-		return reinterpret_cast<T*>(mTombStone->getTarget());
-	}
-
-	friend bool operator== (const LLHandle<T>& lhs, const LLHandle<T>& rhs)
-	{
-		return lhs.mTombStone == rhs.mTombStone;
-	}
-	friend bool operator!= (const LLHandle<T>& lhs, const LLHandle<T>& rhs)
-	{
-		return !(lhs == rhs);
-	}
-	friend bool	operator< (const LLHandle<T>& lhs, const LLHandle<T>& rhs)
-	{
-		return lhs.mTombStone < rhs.mTombStone;
-	}
-	friend bool	operator> (const LLHandle<T>& lhs, const LLHandle<T>& rhs)
-	{
-		return lhs.mTombStone > rhs.mTombStone;
-	}
-
-protected:
-	LLPointer<LLTombStone> mTombStone;
-
-private:
-	typedef T* pointer_t;
-	static LLPointer<LLTombStone>& getDefaultTombStone()
-	{
-		static LLPointer<LLTombStone> sDefaultTombStone = new LLTombStone;
-		return sDefaultTombStone;
-	}
-};
-
-template <typename T>
-class LLRootHandle : public LLHandle<T>
-{
-public:
-	typedef LLRootHandle<T> self_t;
-	typedef LLHandle<T> base_t;
-
-	LLRootHandle(T* object) { bind(object); }
-	LLRootHandle() {};
-	~LLRootHandle() { unbind(); }
-
-	// this is redundant, since an LLRootHandle *is* an LLHandle
-	//LLHandle<T> getHandle() { return LLHandle<T>(*this); }
-
-	void bind(T* object) 
-	{ 
-		// unbind existing tombstone
-		if (LLHandle<T>::mTombStone.notNull())
-		{
-			if (LLHandle<T>::mTombStone->getTarget() == (void*)object) return;
-			LLHandle<T>::mTombStone->setTarget(NULL);
-		}
-		// tombstone reference counted, so no paired delete
-		LLHandle<T>::mTombStone = new LLTombStone((void*)object);
-	}
-
-	void unbind() 
-	{
-		LLHandle<T>::mTombStone->setTarget(NULL);
-	}
-
-	//don't allow copying of root handles, since there should only be one
-private:
-	LLRootHandle(const LLRootHandle& other) {};
-};
-
-// Use this as a mixin for simple classes that need handles and when you don't
-// want handles at multiple points of the inheritance hierarchy
-template <typename T>
-class LLHandleProvider
-{
-public:
-	LLHandle<T> getHandle() const
-	{ 
-		// perform lazy binding to avoid small tombstone allocations for handle
-		// providers whose handles are never referenced
-		mHandle.bind(static_cast<T*>(const_cast<LLHandleProvider<T>* >(this))); 
-		return mHandle; 
-	}
-
-protected:
-	typedef LLHandle<T> handle_type_t;
-	LLHandleProvider() 
-	{
-		// provided here to enforce T deriving from LLHandleProvider<T>
-	} 
-
-	template <typename U>
-	LLHandle<U> getDerivedHandle(typename boost::enable_if< typename boost::is_convertible<U*, T*> >::type* dummy = 0) const
-	{
-		LLHandle<U> downcast_handle;
-		downcast_handle.mTombStone = getHandle().mTombStone;
-		return downcast_handle;
-	}
-
-
-private:
-	mutable LLRootHandle<T> mHandle;
-};
-
-#endif