Automated merge with ssh://hg.lindenlab.com/richard/viewer-experience

20 files changed, 688 insertions, 298 deletions

diff --git a/indra/llui/llbutton.cpp b/indra/llui/llbutton.cpp
index f9e2ad8554..93d8282aa7 100644
--- a/indra/llui/llbutton.cpp
+++ b/indra/llui/llbutton.cpp
@@ -115,7 +115,7 @@ LLButton::Params::Params()
 
 LLButton::LLButton(const LLButton::Params& p)
 :	LLUICtrl(p),
-	LLBadgeOwner(LLView::getHandle()),
+	LLBadgeOwner(getHandle()),
 	mMouseDownFrame(0),
 	mMouseHeldDownCount(0),
 	mBorderEnabled( FALSE ),
diff --git a/indra/llui/llfloater.cpp b/indra/llui/llfloater.cpp
index a5fd3ea552..40b550269c 100644
--- a/indra/llui/llfloater.cpp
+++ b/indra/llui/llfloater.cpp
@@ -113,7 +113,6 @@ LLFloater::click_callback LLFloater::sButtonCallbacks[BUTTON_COUNT] =
 
 LLMultiFloater* LLFloater::sHostp = NULL;
 BOOL			LLFloater::sQuitting = FALSE; // Flag to prevent storing visibility controls while quitting
-LLFloater::handle_map_t	LLFloater::sFloaterMap;
 
 LLFloaterView* gFloaterView = NULL;
 
@@ -270,7 +269,6 @@ LLFloater::LLFloater(const LLSD& key, const LLFloater::Params& p)
 	mMinimizeSignal(NULL)
 //	mNotificationContext(NULL)
 {
-	mHandle.bind(this);
 //	mNotificationContext = new LLFloaterNotificationContext(getHandle());
 
 	// Clicks stop here.
@@ -325,9 +323,6 @@ void LLFloater::initFloater(const Params& p)
 	// Floaters are created in the invisible state	
 	setVisible(FALSE);
 
-	// add self to handle->floater map
-	sFloaterMap[mHandle] = this;
-
 	if (!getParent())
 	{
 		gFloaterView->addChild(this);
@@ -534,8 +529,6 @@ LLFloater::~LLFloater()
 	// correct, non-minimized positions.
 	setMinimized( FALSE );
 
-	sFloaterMap.erase(mHandle);
-
 	delete mDragHandle;
 	for (S32 i = 0; i < 4; i++) 
 	{
@@ -1040,7 +1033,9 @@ BOOL LLFloater::canSnapTo(const LLView* other_view)
 	if (other_view != getParent())
 	{
 		const LLFloater* other_floaterp = dynamic_cast<const LLFloater*>(other_view);		
-		if (other_floaterp && other_floaterp->getSnapTarget() == getHandle() && mDependents.find(other_floaterp->getHandle()) != mDependents.end())
+		if (other_floaterp 
+			&& other_floaterp->getSnapTarget() == getHandle() 
+			&& mDependents.find(other_floaterp->getHandle()) != mDependents.end())
 		{
 			// this is a dependent that is already snapped to us, so don't snap back to it
 			return FALSE;
@@ -1679,18 +1674,17 @@ void LLFloater::onClickHelp( LLFloater* self )
 LLFloater* LLFloater::getClosableFloaterFromFocus()
 {
 	LLFloater* focused_floater = NULL;
-
-	handle_map_iter_t iter;
-	for(iter = sFloaterMap.begin(); iter != sFloaterMap.end(); ++iter)
+	LLInstanceTracker<LLFloater>::instance_iter it = beginInstances();
+	LLInstanceTracker<LLFloater>::instance_iter end_it = endInstances();
+	for (; it != end_it; ++it)
 	{
-		focused_floater = iter->second;
-		if (focused_floater->hasFocus())
+		if (it->hasFocus())
 		{
 			break;
 		}
 	}
 
-	if (iter == sFloaterMap.end())
+	if (it == endInstances())
 	{
 		// nothing found, return
 		return NULL;
diff --git a/indra/llui/llfloater.h b/indra/llui/llfloater.h
index 8886ae3393..c70eb0958d 100644
--- a/indra/llui/llfloater.h
+++ b/indra/llui/llfloater.h
@@ -83,7 +83,7 @@ namespace LLInitParam
 }
 
 
-class LLFloater : public LLPanel
+class LLFloater : public LLPanel, public LLInstanceTracker<LLFloater>
 {
 	friend class LLFloaterView;
 	friend class LLFloaterReg;
@@ -283,7 +283,7 @@ public:
 	void			clearSnapTarget() { mSnappedTo.markDead(); }
 	LLHandle<LLFloater>	getSnapTarget() const { return mSnappedTo; }
 
-	LLHandle<LLFloater> getHandle() const { return mHandle; }
+	LLHandle<LLFloater> getHandle() const { return getDerivedHandle<LLFloater>(); }
 	const LLSD& 	getKey() { return mKey; }
 	virtual bool	matchesKey(const LLSD& key) { return mSingleInstance || KeyCompare::equate(key, mKey); }
 	
@@ -461,16 +461,9 @@ private:
 	typedef void(*click_callback)(LLFloater*);
 	static click_callback sButtonCallbacks[BUTTON_COUNT];
 
-	typedef std::map<LLHandle<LLFloater>, LLFloater*> handle_map_t;
-	typedef std::map<LLHandle<LLFloater>, LLFloater*>::iterator handle_map_iter_t;
-	static handle_map_t	sFloaterMap;
-
 	BOOL			mHasBeenDraggedWhileMinimized;
 	S32				mPreviousMinimizedBottom;
 	S32				mPreviousMinimizedLeft;
-
-//	LLFloaterNotificationContext* mNotificationContext;
-	LLRootHandle<LLFloater>		mHandle;	
 };
 
 
diff --git a/indra/llui/llhandle.h b/indra/llui/llhandle.h
index 8c000eee48..e6390ee599 100644
--- a/indra/llui/llhandle.h
+++ b/indra/llui/llhandle.h
@@ -28,17 +28,18 @@
 #define LLHANDLE_H
 
 #include "llpointer.h"
+#include <boost/type_traits/is_convertible.hpp>
+#include <boost/utility/enable_if.hpp>
 
-template <typename T>
 class LLTombStone : public LLRefCount
 {
 public:
-	LLTombStone(T* target = NULL) : mTarget(target) {}
+	LLTombStone(void* target = NULL) : mTarget(target) {}
 
-	void setTarget(T* target) { mTarget = target; }
-	T* getTarget() const { return mTarget; }
+	void setTarget(void* target) { mTarget = target; }
+	void* getTarget() const { return mTarget; }
 private:
-	T* mTarget;
+	mutable void* mTarget;
 };
 
 //	LLHandles are used to refer to objects whose lifetime you do not control or influence.  
@@ -53,13 +54,15 @@ private:
 template <typename T>
 class LLHandle
 {
+	template <typename U> friend class LLHandle;
+	template <typename U> friend class LLHandleProvider;
 public:
 	LLHandle() : mTombStone(getDefaultTombStone()) {}
-	const LLHandle<T>& operator =(const LLHandle<T>& other)  
-	{ 
-		mTombStone = other.mTombStone;
-		return *this; 
-	}
+
+	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 
 	{ 
@@ -73,7 +76,7 @@ public:
 
 	T* get() const
 	{
-		return mTombStone->getTarget();
+		return reinterpret_cast<T*>(mTombStone->getTarget());
 	}
 
 	friend bool operator== (const LLHandle<T>& lhs, const LLHandle<T>& rhs)
@@ -94,12 +97,13 @@ public:
 	}
 
 protected:
-	LLPointer<LLTombStone<T> > mTombStone;
+	LLPointer<LLTombStone> mTombStone;
 
 private:
-	static LLPointer<LLTombStone<T> >& getDefaultTombStone()
+	typedef T* pointer_t;
+	static LLPointer<LLTombStone>& getDefaultTombStone()
 	{
-		static LLPointer<LLTombStone<T> > sDefaultTombStone = new LLTombStone<T>;
+		static LLPointer<LLTombStone> sDefaultTombStone = new LLTombStone;
 		return sDefaultTombStone;
 	}
 };
@@ -108,23 +112,26 @@ 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 a LLRootHandle *is* an LLHandle
-	LLHandle<T> getHandle() { return LLHandle<T>(*this); }
+	// 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() == object) return;
+			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<T>(object);
+		LLHandle<T>::mTombStone = new LLTombStone((void*)object);
 	}
 
 	void unbind() 
@@ -142,6 +149,15 @@ private:
 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() 
@@ -149,16 +165,17 @@ protected:
 		// provided here to enforce T deriving from LLHandleProvider<T>
 	} 
 
-	LLHandle<T> getHandle() 
-	{ 
-		// perform lazy binding to avoid small tombstone allocations for handle
-		// providers whose handles are never referenced
-		mHandle.bind(static_cast<T*>(this)); 
-		return mHandle; 
+	template <typename U>
+	typename 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:
-	LLRootHandle<T> mHandle;
+	mutable LLRootHandle<T> mHandle;
 };
 
 #endif
diff --git a/indra/llui/llmenugl.h b/indra/llui/llmenugl.h
index bdae899933..36f3ba34b9 100644
--- a/indra/llui/llmenugl.h
+++ b/indra/llui/llmenugl.h
@@ -681,7 +681,7 @@ public:
 
 			BOOL	appendContextSubMenu(LLContextMenu *menu);
 
-			LLHandle<LLContextMenu> getHandle() { mHandle.bind(this); return mHandle; }
+			LLHandle<LLContextMenu> getHandle() { return getDerivedHandle<LLContextMenu>(); }
 
 protected:
 	BOOL						mHoveredAnyItem;
diff --git a/indra/llui/llpanel.cpp b/indra/llui/llpanel.cpp
index a45b617c2e..00318cec6b 100644
--- a/indra/llui/llpanel.cpp
+++ b/indra/llui/llpanel.cpp
@@ -122,8 +122,6 @@ LLPanel::LLPanel(const LLPanel::Params& p)
 	{
 		addBorder(p.border);
 	}
-	
-	mPanelHandle.bind(this);
 }
 
 LLPanel::~LLPanel()
diff --git a/indra/llui/llpanel.h b/indra/llui/llpanel.h
index ab1c87caff..cd33938226 100644
--- a/indra/llui/llpanel.h
+++ b/indra/llui/llpanel.h
@@ -153,7 +153,7 @@ public:
 	
 	void			setCtrlsEnabled(BOOL b);
 
-	LLHandle<LLPanel>	getHandle() const { return mPanelHandle; }
+	LLHandle<LLPanel>	getHandle() const { return getDerivedHandle<LLPanel>(); }
 
 	const LLCallbackMap::map_t& getFactoryMap() const { return mFactoryMap; }
 	
@@ -278,7 +278,6 @@ private:
 	LLViewBorder*	mBorder;
 	LLButton*		mDefaultBtn;
 	LLUIString		mLabel;
-	LLRootHandle<LLPanel> mPanelHandle;
 
 	typedef std::map<std::string, std::string> ui_string_map_t;
 	ui_string_map_t	mUIStrings;
diff --git a/indra/llui/lluictrl.cpp b/indra/llui/lluictrl.cpp
index 2fa260ded1..b9c843e931 100644
--- a/indra/llui/lluictrl.cpp
+++ b/indra/llui/lluictrl.cpp
@@ -118,7 +118,6 @@ LLUICtrl::LLUICtrl(const LLUICtrl::Params& p, const LLViewModelPtr& viewmodel)
 	mDoubleClickSignal(NULL),
 	mTransparencyType(TT_DEFAULT)
 {
-	mUICtrlHandle.bind(this);
 }
 
 void LLUICtrl::initFromParams(const Params& p)
@@ -460,7 +459,7 @@ void LLUICtrl::setControlVariable(LLControlVariable* control)
 	if (control)
 	{
 		mControlVariable = control;
-		mControlConnection = mControlVariable->getSignal()->connect(boost::bind(&controlListener, _2, getUICtrlHandle(), std::string("value")));
+		mControlConnection = mControlVariable->getSignal()->connect(boost::bind(&controlListener, _2, getHandle(), std::string("value")));
 		setValue(mControlVariable->getValue());
 	}
 }
@@ -491,7 +490,7 @@ void LLUICtrl::setEnabledControlVariable(LLControlVariable* control)
 	if (control)
 	{
 		mEnabledControlVariable = control;
-		mEnabledControlConnection = mEnabledControlVariable->getSignal()->connect(boost::bind(&controlListener, _2, getUICtrlHandle(), std::string("enabled")));
+		mEnabledControlConnection = mEnabledControlVariable->getSignal()->connect(boost::bind(&controlListener, _2, getHandle(), std::string("enabled")));
 		setEnabled(mEnabledControlVariable->getValue().asBoolean());
 	}
 }
@@ -506,7 +505,7 @@ void LLUICtrl::setDisabledControlVariable(LLControlVariable* control)
 	if (control)
 	{
 		mDisabledControlVariable = control;
-		mDisabledControlConnection = mDisabledControlVariable->getSignal()->connect(boost::bind(&controlListener, _2, getUICtrlHandle(), std::string("disabled")));
+		mDisabledControlConnection = mDisabledControlVariable->getSignal()->connect(boost::bind(&controlListener, _2, getHandle(), std::string("disabled")));
 		setEnabled(!(mDisabledControlVariable->getValue().asBoolean()));
 	}
 }
@@ -521,7 +520,7 @@ void LLUICtrl::setMakeVisibleControlVariable(LLControlVariable* control)
 	if (control)
 	{
 		mMakeVisibleControlVariable = control;
-		mMakeVisibleControlConnection = mMakeVisibleControlVariable->getSignal()->connect(boost::bind(&controlListener, _2, getUICtrlHandle(), std::string("visible")));
+		mMakeVisibleControlConnection = mMakeVisibleControlVariable->getSignal()->connect(boost::bind(&controlListener, _2, getHandle(), std::string("visible")));
 		setVisible(mMakeVisibleControlVariable->getValue().asBoolean());
 	}
 }
@@ -536,7 +535,7 @@ void LLUICtrl::setMakeInvisibleControlVariable(LLControlVariable* control)
 	if (control)
 	{
 		mMakeInvisibleControlVariable = control;
-		mMakeInvisibleControlConnection = mMakeInvisibleControlVariable->getSignal()->connect(boost::bind(&controlListener, _2, getUICtrlHandle(), std::string("invisible")));
+		mMakeInvisibleControlConnection = mMakeInvisibleControlVariable->getSignal()->connect(boost::bind(&controlListener, _2, getHandle(), std::string("invisible")));
 		setVisible(!(mMakeInvisibleControlVariable->getValue().asBoolean()));
 	}
 }
diff --git a/indra/llui/lluictrl.h b/indra/llui/lluictrl.h
index 3e055a9d06..fb2196bb16 100644
--- a/indra/llui/lluictrl.h
+++ b/indra/llui/lluictrl.h
@@ -223,7 +223,7 @@ public:
 	BOOL	focusLastItem(BOOL prefer_text_fields = FALSE);
 
 	// Non Virtuals
-	LLHandle<LLUICtrl> getUICtrlHandle() const { return mUICtrlHandle; }
+	LLHandle<LLUICtrl> getHandle() const { return getDerivedHandle<LLUICtrl>(); }
 	BOOL			getIsChrome() const;
 	
 	void			setTabStop( BOOL b );
@@ -313,7 +313,6 @@ private:
 	BOOL			mRequestsFront;
 	BOOL			mTabStop;
 	BOOL			mTentative;
-	LLRootHandle<LLUICtrl> mUICtrlHandle;
 
 	ETypeTransparency mTransparencyType;
 
diff --git a/indra/llui/llview.h b/indra/llui/llview.h
index 08828e55e6..13f118abec 100644
--- a/indra/llui/llview.h
+++ b/indra/llui/llview.h
@@ -97,7 +97,11 @@ private:
 	static std::vector<LLViewDrawContext*> sDrawContextStack;
 };
 
-class LLView : public LLMouseHandler, public LLMortician, public LLFocusableElement
+class LLView 
+:	public LLMouseHandler,			// handles mouse events
+	public LLFocusableElement,		// handles keyboard events
+	public LLMortician,				// lazy deletion
+	public LLHandleProvider<LLView>	// passes out weak references to self
 {
 public:
 	struct Follows : public LLInitParam::ChoiceBlock<Follows>
@@ -306,8 +310,6 @@ public:
 	void			popVisible()				{ setVisible(mLastVisible); }
 	BOOL			getLastVisible()	const	{ return mLastVisible; }
 
-	LLHandle<LLView>	getHandle()				{ mHandle.bind(this); return mHandle; }
-
 	U32			getFollows() const				{ return mReshapeFlags; }
 	BOOL		followsLeft() const				{ return mReshapeFlags & FOLLOWS_LEFT; }
 	BOOL		followsRight() const			{ return mReshapeFlags & FOLLOWS_RIGHT; }
@@ -606,7 +608,6 @@ private:
 	BOOL		mIsFocusRoot;
 	BOOL		mUseBoundingRect; // hit test against bounding rectangle that includes all child elements
 
-	LLRootHandle<LLView> mHandle;
 	BOOL		mLastVisible;
 
 	S32			mNextInsertionOrdinal;
diff --git a/indra/llui/tests/llurlentry_stub.cpp b/indra/llui/tests/llurlentry_stub.cpp
index 4f251db93b..c75df86891 100644
--- a/indra/llui/tests/llurlentry_stub.cpp
+++ b/indra/llui/tests/llurlentry_stub.cpp
@@ -105,8 +105,6 @@ LLStyle::Params::Params()
 
 namespace LLInitParam
 {
-	BaseBlock::BaseBlock() {}
-	BaseBlock::~BaseBlock() {}
 	Param::Param(BaseBlock* enclosing_block)
 	:	mIsProvided(false)
 	{
@@ -114,7 +112,6 @@ namespace LLInitParam
 		const U8* block_addr = reinterpret_cast<const U8*>(enclosing_block);
 		mEnclosingBlockOffset = (U16)(my_addr - block_addr);
 	}
-	void BaseBlock::paramChanged(const Param& last_param, bool user_provided) {}
 
 	void BaseBlock::addParam(BlockDescriptor& block_data, const ParamDescriptorPtr in_param, const char* char_name){}
 	void BaseBlock::addSynonym(Param& param, const std::string& synonym) {}
diff --git a/indra/llui/tests/llurlmatch_test.cpp b/indra/llui/tests/llurlmatch_test.cpp
index 627f3129e9..7183413463 100644
--- a/indra/llui/tests/llurlmatch_test.cpp
+++ b/indra/llui/tests/llurlmatch_test.cpp
@@ -63,9 +63,6 @@ S32 LLUIImage::getHeight() const
 
 namespace LLInitParam
 {
-	BaseBlock::BaseBlock() {}
-	BaseBlock::~BaseBlock() {}
-
 	BlockDescriptor::BlockDescriptor() {}
 	ParamDescriptor::ParamDescriptor(param_handle_t p, 
 						merge_func_t merge_func, 
@@ -77,8 +74,6 @@ namespace LLInitParam
 						S32 max_count){}
 	ParamDescriptor::~ParamDescriptor() {}
 
-	void BaseBlock::paramChanged(const Param& last_param, bool user_provided) {}
-
 	void BaseBlock::addParam(BlockDescriptor& block_data, const ParamDescriptorPtr in_param, const char* char_name){}
 	param_handle_t BaseBlock::getHandleFromParam(const Param* param) const {return 0;}
 	void BaseBlock::addSynonym(Param& param, const std::string& synonym) {}
diff --git a/indra/llxuixml/llinitparam.cpp b/indra/llxuixml/llinitparam.cpp
index 482064ed7b..db72aa19b9 100644
--- a/indra/llxuixml/llinitparam.cpp
+++ b/indra/llxuixml/llinitparam.cpp
@@ -40,7 +40,7 @@ namespace LLInitParam
 	{
 		const U8* my_addr = reinterpret_cast<const U8*>(this);
 		const U8* block_addr = reinterpret_cast<const U8*>(enclosing_block);
-		mEnclosingBlockOffset = 0x7FFFffff & ((U32)(my_addr - block_addr));
+		mEnclosingBlockOffset = 0x7FFFffff & (U32)(my_addr - block_addr);
 	}
 
 	//
@@ -118,16 +118,6 @@ namespace LLInitParam
 		mCurrentBlockPtr(NULL)
 	{}
 
-	//
-	// BaseBlock
-	//
-	BaseBlock::BaseBlock()
-	:	mChangeVersion(0)
-	{}
-
-	BaseBlock::~BaseBlock()
-	{}
-
 	// called by each derived class in least to most derived order
 	void BaseBlock::init(BlockDescriptor& descriptor, BlockDescriptor& base_descriptor, size_t block_size)
 	{
@@ -427,14 +417,6 @@ namespace LLInitParam
 		}
 	}
 
-	void BaseBlock::paramChanged(const Param& changed_param, bool user_provided)
-	{ 
-		if (user_provided)
-		{
-			mChangeVersion++;
-		}
-	}
-
 	const std::string& BaseBlock::getParamName(const BlockDescriptor& block_data, const Param* paramp) const
 	{
 		param_handle_t handle = getHandleFromParam(paramp);
@@ -478,6 +460,7 @@ namespace LLInitParam
 			if (merge_func)
 			{
 				Param* paramp = getParamFromHandle((*it)->mParamHandle);
+				llassert(paramp->mEnclosingBlockOffset == (*it)->mParamHandle);
 				some_param_changed |= merge_func(*paramp, *other_paramp, overwrite);
 			}
 		}
diff --git a/indra/llxuixml/llinitparam.h b/indra/llxuixml/llinitparam.h
index 183472450d..80b6504c4f 100644
--- a/indra/llxuixml/llinitparam.h
+++ b/indra/llxuixml/llinitparam.h
@@ -51,7 +51,7 @@ namespace LLInitParam
 			return a == b;
 		}
     };
-    
+
 	// boost function types are not comparable
 	template<typename T>
 	struct ParamCompare<T, true>
@@ -74,6 +74,7 @@ namespace LLInitParam
 		static bool equals(const Flag& a, const Flag& b) { return false; }
 	};
 
+
 	// helper functions and classes
 	typedef ptrdiff_t param_handle_t;
 
@@ -82,8 +83,11 @@ namespace LLInitParam
 	template <typename T>
 	class TypeValues
 	{
+	private:
+		struct Inaccessable{};
 	public:
 		typedef std::map<std::string, T> value_name_map_t;
+		typedef Inaccessable name_t;
 
 		void setValueName(const std::string& key) {}
 		std::string getValueName() const { return ""; }
@@ -113,6 +117,7 @@ namespace LLInitParam
 	{
 	public:
 		typedef typename std::map<std::string, T> value_name_map_t;
+		typedef std::string name_t;
 
 		//TODO: cache key by index to save on param block size
 		void setValueName(const std::string& value_name) 
@@ -293,36 +298,7 @@ namespace LLInitParam
 		parser_inspect_func_map_t*	mParserInspectFuncs;
 	};
 
-	class BaseBlock;
-
-	class Param
-	{
-	public:
-		// public to allow choice blocks to clear provided flag on stale choices
-		void setProvided(bool is_provided) { mIsProvided = is_provided; }
-
-	protected:
-		bool anyProvided() const { return mIsProvided; }
-
-		Param(BaseBlock* enclosing_block);
-
-		// store pointer to enclosing block as offset to reduce space and allow for quick copying
-		BaseBlock& enclosingBlock() const
-		{ 
-			const U8* my_addr = reinterpret_cast<const U8*>(this);
-			// get address of enclosing BLOCK class using stored offset to enclosing BaseBlock class
-			return *const_cast<BaseBlock*>
-				(reinterpret_cast<const BaseBlock*>
-					(my_addr - (ptrdiff_t)(S32)mEnclosingBlockOffset));
-		}
-
-	private:
-		friend class BaseBlock;
-
-		U32		mEnclosingBlockOffset:31;
-		U32		mIsProvided:1;
-
-	};
+	class Param;
 
 	// various callbacks and constraints associated with an individual param
 	struct ParamDescriptor
@@ -390,12 +366,91 @@ namespace LLInitParam
 		all_params_list_t				mAllParams;				// all parameters, owns descriptors
 		size_t							mMaxParamOffset;
 		EInitializationState			mInitializationState;	// whether or not static block data has been initialized
-		BaseBlock*						mCurrentBlockPtr;		// pointer to block currently being constructed
+		class BaseBlock*				mCurrentBlockPtr;		// pointer to block currently being constructed
 	};
 
 	class BaseBlock
 	{
 	public:
+		//TODO: implement in terms of owned_ptr
+		template<typename T>
+		class Lazy
+		{
+		public:
+			Lazy()
+				: mPtr(NULL)
+			{}
+
+			~Lazy()
+			{
+				delete mPtr;
+			}
+
+			Lazy(const Lazy& other)
+			{
+				if (other.mPtr)
+				{
+					mPtr = new T(*other.mPtr);
+				}
+				else
+				{
+					mPtr = NULL;
+				}
+			}
+
+			Lazy<T>& operator = (const Lazy<T>& other)
+			{
+				if (other.mPtr)
+				{
+					mPtr = new T(*other.mPtr);
+				}
+				else
+				{
+					mPtr = NULL;
+				}
+				return *this;
+			}
+
+			bool empty() const
+			{
+				return mPtr == NULL;
+			}
+
+			void set(const T& other)
+			{
+				delete mPtr;
+				mPtr = new T(other);
+			}
+
+			const T& get() const
+			{
+				return ensureInstance();
+			}
+
+			T& get()
+			{
+				return ensureInstance();
+			}
+
+		private:
+			// lazily allocate an instance of T
+			T* ensureInstance() const
+			{
+				if (mPtr == NULL)
+				{
+					mPtr = new T();
+				}
+				return mPtr;
+			}
+
+		private:
+			// if you get a compilation error with this, that means you are using a forward declared struct for T
+			// unfortunately, the type traits we rely on don't work with forward declared typed
+			//static const int dummy = sizeof(T);
+
+			mutable T* mPtr;
+		};
+
 		// "Multiple" constraint types, put here in root class to avoid ambiguity during use
 		struct AnyAmount
 		{
@@ -436,8 +491,7 @@ namespace LLInitParam
 		LOG_CLASS(BaseBlock);
 		friend class Param;
 
-		BaseBlock();
-		virtual ~BaseBlock();
+		virtual ~BaseBlock() {}
 		bool submitValue(Parser::name_stack_t& name_stack, Parser& p, bool silent=false);
 
 		param_handle_t getHandleFromParam(const Param* param) const;
@@ -460,9 +514,7 @@ namespace LLInitParam
 		void addSynonym(Param& param, const std::string& synonym);
 
 		// Blocks can override this to do custom tracking of changes
-		virtual void paramChanged(const Param& changed_param, bool user_provided);
-
-		S32 getLastChangeVersion() const { return mChangeVersion; }
+		virtual void paramChanged(const Param& changed_param, bool user_provided) {}
 
 		bool deserializeBlock(Parser& p, Parser::name_stack_range_t name_stack_range, bool new_name);
 		void serializeBlock(Parser& p, Parser::name_stack_t& name_stack, const BaseBlock* diff_block = NULL) const;
@@ -498,9 +550,6 @@ namespace LLInitParam
 		// take all provided params from other and apply to self
 		bool mergeBlock(BlockDescriptor& block_data, const BaseBlock& other, bool overwrite);
 
-		// can be updated in getters
-		mutable S32				mChangeVersion;
-
 		static BlockDescriptor& selfBlockDescriptor()
 		{
 			static BlockDescriptor sBlockDescriptor;
@@ -511,18 +560,73 @@ namespace LLInitParam
 		const std::string& getParamName(const BlockDescriptor& block_data, const Param* paramp) const;
 	};
 
+	template<typename T>
+	struct ParamCompare<BaseBlock::Lazy<T>, false >
+	{
+		static bool equals(const BaseBlock::Lazy<T>& a, const BaseBlock::Lazy<T>& b) { return !a.empty() || !b.empty(); }
+	};
+
+	class Param
+	{
+	public:
+		void setProvided(bool is_provided = true)
+		{
+			mIsProvided = is_provided;
+			enclosingBlock().paramChanged(*this, is_provided);
+		}
+
+		Param& operator =(const Param& other)
+		{
+			mIsProvided = other.mIsProvided;
+			// don't change mEnclosingblockoffset
+			return *this;
+		}
+	protected:
+
+		bool anyProvided() const { return mIsProvided; }
+
+		Param(BaseBlock* enclosing_block);
+
+		// store pointer to enclosing block as offset to reduce space and allow for quick copying
+		BaseBlock& enclosingBlock() const
+		{ 
+			const U8* my_addr = reinterpret_cast<const U8*>(this);
+			// get address of enclosing BLOCK class using stored offset to enclosing BaseBlock class
+			return *const_cast<BaseBlock*>
+				(reinterpret_cast<const BaseBlock*>
+					(my_addr - (ptrdiff_t)(S32)mEnclosingBlockOffset));
+		}
+
+	private:
+		friend BaseBlock;
+
+		U32		mEnclosingBlockOffset:31;
+		U32		mIsProvided:1;
+
+	};
+
 	// these templates allow us to distinguish between template parameters
 	// that derive from BaseBlock and those that don't
 	template<typename T, typename Void = void>
 	struct IsBlock
 	{
 		static const bool value = false;
+		struct EmptyBase {};
+		typedef EmptyBase base_class_t;
 	};
 
 	template<typename T>
 	struct IsBlock<T, typename T::baseblock_base_class_t>
 	{
 		static const bool value = true;
+		typedef BaseBlock base_class_t;
+	};
+
+	template<typename T>
+	struct IsBlock<BaseBlock::Lazy<T>, typename T::baseblock_base_class_t >
+	{
+		static const bool value = true;
+		typedef BaseBlock base_class_t;
 	};
 
 	template<typename T, typename NAME_VALUE_LOOKUP, bool VALUE_IS_BLOCK = IsBlock<T>::value>
@@ -530,6 +634,8 @@ namespace LLInitParam
 	{
 	public:
 		typedef const T&							value_assignment_t;
+		typedef T									value_t;
+		typedef ParamValue<T, NAME_VALUE_LOOKUP, VALUE_IS_BLOCK>	self_t;
 
 		ParamValue(): mValue() {}
 		ParamValue(value_assignment_t other) : mValue(other) {}
@@ -559,8 +665,22 @@ namespace LLInitParam
 			return mValue;
 		}
 
+		void operator ()(const typename NAME_VALUE_LOOKUP::name_t& name)
+		{
+			*this = name;
+		}
 
-	private:
+		self_t& operator =(const typename NAME_VALUE_LOOKUP::name_t& name)
+		{
+			if (NAME_VALUE_LOOKUP::getValueFromName(name, mValue))
+			{
+				setValueName(name);
+			}
+
+			return *this;
+		}
+
+	protected:
 		T mValue;
 	};
 
@@ -571,18 +691,16 @@ namespace LLInitParam
 	{
 	public:
 		typedef const T&							value_assignment_t;
+		typedef T									value_t;
+		typedef ParamValue<T, NAME_VALUE_LOOKUP, true>	self_t;
 
 		ParamValue() 
 		:	T(),
-			mKeyVersion(0),
-			mValidatedVersion(-1),
 			mValidated(false)
 		{}
 
 		ParamValue(value_assignment_t other)
 		:	T(other),
-			mKeyVersion(0),
-			mValidatedVersion(-1),
 			mValidated(false)
 		{}
 
@@ -611,13 +729,74 @@ namespace LLInitParam
 			return *this;
 		}
 
-		S32 			mKeyVersion;
+		void operator ()(const typename NAME_VALUE_LOOKUP::name_t& name)
+		{
+			*this = name;
+		}
+
+		self_t& operator =(const typename NAME_VALUE_LOOKUP::name_t& name)
+		{
+			if (NAME_VALUE_LOOKUP::getValueFromName(name, mValue))
+			{
+				setValueName(name);
+			}
+
+			return *this;
+		}
 
 	protected:
-		mutable S32 	mValidatedVersion;
 		mutable bool 	mValidated; // lazy validation flag
 	};
 
+	template<typename NAME_VALUE_LOOKUP>
+	class ParamValue<std::string, NAME_VALUE_LOOKUP, false>
+	: public NAME_VALUE_LOOKUP
+	{
+	public:
+		typedef const std::string&	value_assignment_t;
+		typedef std::string			value_t;
+		typedef ParamValue<std::string, NAME_VALUE_LOOKUP, false>	self_t;
+
+		ParamValue(): mValue() {}
+		ParamValue(value_assignment_t other) : mValue(other) {}
+
+		void setValue(value_assignment_t val)
+		{
+			if (NAME_VALUE_LOOKUP::getValueFromName(val, mValue))
+			{
+				setValueName(val);
+			}
+			else
+			{
+				mValue = val;
+			}
+		}
+
+		value_assignment_t getValue() const
+		{
+			return mValue;
+		}
+
+		std::string& getValue()
+		{
+			return mValue;
+		}
+
+		operator value_assignment_t() const
+		{
+			return mValue;
+		}
+
+		value_assignment_t operator()() const
+		{
+			return mValue;
+		}
+
+	protected:
+		std::string mValue;
+	};
+
+
 	template<typename T, typename NAME_VALUE_LOOKUP = TypeValues<T> >
 	struct ParamIterator
 	{
@@ -636,10 +815,12 @@ namespace LLInitParam
 		public ParamValue<T, NAME_VALUE_LOOKUP>
 	{
 	public:
-		typedef const T&																	value_assignment_t;
 		typedef	TypedParam<T, NAME_VALUE_LOOKUP, HAS_MULTIPLE_VALUES, VALUE_IS_BLOCK>		self_t;
-		typedef NAME_VALUE_LOOKUP															name_value_lookup_t;
 		typedef ParamValue<T, NAME_VALUE_LOOKUP>											param_value_t;
+		typedef param_value_t::value_assignment_t											value_assignment_t;
+		typedef NAME_VALUE_LOOKUP															name_value_lookup_t;
+
+		using param_value_t::operator();
 
 		TypedParam(BlockDescriptor& block_descriptor, const char* name, value_assignment_t value, ParamDescriptor::validation_func_t validate_func, S32 min_count, S32 max_count) 
 		:	Param(block_descriptor.mCurrentBlockPtr)
@@ -671,8 +852,7 @@ namespace LLInitParam
 				if (parser.readValue(typed_param.getValue()))
 				{
 					typed_param.clearValueName();
-					typed_param.setProvided(true);
-					typed_param.enclosingBlock().paramChanged(param, true);
+					typed_param.setProvided();
 					return true;
 				}
 				
@@ -687,8 +867,7 @@ namespace LLInitParam
 						if (name_value_lookup_t::getValueFromName(name, typed_param.getValue()))
 						{
 							typed_param.setValueName(name);
-							typed_param.setProvided(true);
-							typed_param.enclosingBlock().paramChanged(param, true);
+							typed_param.setProvided();
 							return true;
 						}
 
@@ -746,14 +925,25 @@ namespace LLInitParam
 
 		void set(value_assignment_t val, bool flag_as_provided = true)
 		{
-			setValue(val);
 			param_value_t::clearValueName();
+			setValue(val);
 			setProvided(flag_as_provided);
-			Param::enclosingBlock().paramChanged(*this, flag_as_provided);
+		}
+
+		self_t& operator =(const typename NAME_VALUE_LOOKUP::name_t& name)
+		{
+			return static_cast<self_t&>(param_value_t::operator =(name));
 		}
 
 	protected:
 
+		self_t& operator =(const self_t& other)
+		{
+			param_value_t::operator =(other);
+			Param::operator =(other);
+			return *this;
+		}
+
 		static bool mergeWith(Param& dst, const Param& src, bool overwrite)
 		{
 			const self_t& src_typed_param = static_cast<const self_t&>(src);
@@ -776,12 +966,12 @@ namespace LLInitParam
 		public ParamValue<T, NAME_VALUE_LOOKUP>
 	{
 	public:
-		typedef const T											value_const_t;
-		typedef T												value_t;
-		typedef value_const_t&									value_assignment_t;
+		typedef ParamValue<T, NAME_VALUE_LOOKUP>				param_value_t;
+		typedef typename param_value_t::value_assignment_t		value_assignment_t;
 		typedef TypedParam<T, NAME_VALUE_LOOKUP, false, true>	self_t;
 		typedef NAME_VALUE_LOOKUP								name_value_lookup_t;
-		typedef ParamValue<T, NAME_VALUE_LOOKUP>				param_value_t;
+
+		using param_value_t::operator();
 
 		TypedParam(BlockDescriptor& block_descriptor, const char* name, value_assignment_t value, ParamDescriptor::validation_func_t validate_func, S32 min_count, S32 max_count)
 		:	Param(block_descriptor.mCurrentBlockPtr),
@@ -808,8 +998,7 @@ namespace LLInitParam
 			if(typed_param.deserializeBlock(parser, name_stack_range, new_name))
 			{
 				typed_param.clearValueName();
-				typed_param.enclosingBlock().paramChanged(param, true);
-				typed_param.setProvided(true);
+				typed_param.setProvided();
 				return true;
 			}
 
@@ -822,10 +1011,8 @@ namespace LLInitParam
 					// try to parse a per type named value
 					if (name_value_lookup_t::getValueFromName(name, typed_param.getValue()))
 					{
-						typed_param.enclosingBlock().paramChanged(param, true);
 						typed_param.setValueName(name);
-						typed_param.setProvided(true);
-						typed_param.mKeyVersion = typed_param.getLastChangeVersion();
+						typed_param.setProvided();
 						return true;
 					}
 
@@ -845,7 +1032,7 @@ namespace LLInitParam
 			}
 
 			std::string key = typed_param.getValueName();
-			if (!key.empty() && typed_param.mKeyVersion == typed_param.getLastChangeVersion())
+			if (!key.empty())
 			{
 				if (!parser.writeValue(key, name_stack))
 				{
@@ -870,11 +1057,10 @@ namespace LLInitParam
 		bool isProvided() const 
 		{ 
 			// only validate block when it hasn't already passed validation with current data
-			if (Param::anyProvided() && param_value_t::mValidatedVersion < param_value_t::getLastChangeVersion())
+			if (Param::anyProvided() && !param_value_t::mValidated)
 			{
 				// a sub-block is "provided" when it has been filled in enough to be valid
 				param_value_t::mValidated = param_value_t::validateBlock(false);
-				param_value_t::mValidatedVersion = param_value_t::getLastChangeVersion();
 			}
 			return Param::anyProvided() && param_value_t::mValidated;
 		}
@@ -884,28 +1070,44 @@ namespace LLInitParam
 		{
 			setValue(val);
 			param_value_t::clearValueName();
-			// force revalidation of block by clearing known provided version
+			// force revalidation of block
 			// next call to isProvided() will update provision status based on validity
-			param_value_t::mValidatedVersion = -1;
+			param_value_t::mValidated = false;
 			setProvided(flag_as_provided);
-			Param::enclosingBlock().paramChanged(*this, flag_as_provided);
+		}
+
+		self_t& operator =(const typename NAME_VALUE_LOOKUP::name_t& name)
+		{
+			return static_cast<self_t&>(param_value_t::operator =(name));
 		}
 
 		// propagate changed status up to enclosing block
 		/*virtual*/ void paramChanged(const Param& changed_param, bool user_provided)
 		{ 
 			param_value_t::paramChanged(changed_param, user_provided);
-			Param::enclosingBlock().paramChanged(*this, user_provided);
 			if (user_provided)
 			{
 				// a child param has been explicitly changed
 				// so *some* aspect of this block is now provided
-				setProvided(true);
+				param_value_t::mValidated = false;
+				setProvided();
+				param_value_t::clearValueName();
+			}
+			else
+			{
+				Param::enclosingBlock().paramChanged(*this, user_provided);
 			}
 		}
 
 	protected:
 
+		self_t& operator =(const self_t& other)
+		{
+			param_value_t::operator =(other);
+			Param::operator =(other);
+			return *this;
+		}
+
 		static bool mergeWith(Param& dst, const Param& src, bool overwrite)
 		{
 			const self_t& src_typed_param = static_cast<const self_t&>(src);
@@ -917,7 +1119,6 @@ namespace LLInitParam
 				{
 					dst_typed_param.clearValueName();
 					dst_typed_param.setProvided(true);
-					dst_typed_param.enclosingBlock().paramChanged(dst_typed_param, true);
 					return true;
 				}
 			}
@@ -936,7 +1137,7 @@ namespace LLInitParam
 		typedef typename std::vector<param_value_t>							container_t;
 		typedef const container_t&											value_assignment_t;
 
-		typedef VALUE_TYPE													value_t;
+		typedef typename param_value_t::value_t								value_t;
 		typedef NAME_VALUE_LOOKUP											name_value_lookup_t;
 		
 		TypedParam(BlockDescriptor& block_descriptor, const char* name, value_assignment_t value, ParamDescriptor::validation_func_t validate_func, S32 min_count, S32 max_count) 
@@ -1004,7 +1205,7 @@ namespace LLInitParam
 				it != end_it;
 				++it)
 			{
-				std::string key = it->getValue();
+				std::string key = it->getValueName();
 				name_stack.back().second = true;
 
 				if(key.empty())
@@ -1013,7 +1214,7 @@ namespace LLInitParam
 					bool value_written = parser.writeValue(*it, name_stack);
 					if (!value_written)
 					{
-						std::string calculated_key = it->calcValueName(key);
+						std::string calculated_key = it->calcValueName(it->getValue());
 						if (!parser.writeValue(calculated_key, name_stack))
 						{
 							break;
@@ -1043,22 +1244,33 @@ namespace LLInitParam
 		{
 			mValues = val;
 			setProvided(flag_as_provided);
-			Param::enclosingBlock().paramChanged(*this, flag_as_provided);
 		}
 
-		value_t& add()
+		param_value_t& add()
 		{
 			mValues.push_back(param_value_t(value_t()));
-			setProvided(true);
-			Param::enclosingBlock().paramChanged(*this, true);
+			Param::setProvided();
 			return mValues.back();
 		}
 
 		void add(const value_t& item)
 		{
-			mValues.push_back(param_value_t(item));
-			setProvided(true);
-			Param::enclosingBlock().paramChanged(*this, true);
+			param_value_t param_value;
+			param_value.setValue(item);
+			mValues.push_back(param_value);
+			setProvided();
+		}
+
+		void add(typename const name_value_lookup_t::name_t& name)
+		{
+			value_t value;
+
+			// try to parse a per type named value
+			if (name_value_lookup_t::getValueFromName(name, value))
+			{
+				add(value);
+				mValues.back().setValueName(name);
+			}
 		}
 
 		// implicit conversion
@@ -1099,8 +1311,7 @@ namespace LLInitParam
 
 			if (src_typed_param.begin() != src_typed_param.end())
 			{
-				dst_typed_param.setProvided(true);
-				dst_typed_param.enclosingBlock().paramChanged(dst_typed_param, true);
+				dst_typed_param.setProvided();
 			}
 			return true;
 		}
@@ -1116,9 +1327,9 @@ namespace LLInitParam
 	public:
 		typedef TypedParam<VALUE_TYPE, NAME_VALUE_LOOKUP, true, true>	self_t;
 		typedef ParamValue<VALUE_TYPE, NAME_VALUE_LOOKUP>				param_value_t;
-		typedef typename std::vector<param_value_t>				container_t;
+		typedef typename std::vector<param_value_t>						container_t;
 		typedef const container_t&										value_assignment_t;
-		typedef VALUE_TYPE												value_t;
+		typedef typename param_value_t::value_t							value_t;
 		typedef NAME_VALUE_LOOKUP										name_value_lookup_t;
 
 		TypedParam(BlockDescriptor& block_descriptor, const char* name, value_assignment_t value, ParamDescriptor::validation_func_t validate_func, S32 min_count, S32 max_count) 
@@ -1158,8 +1369,7 @@ namespace LLInitParam
 			// attempt to parse block...
 			if(value.deserializeBlock(parser, name_stack_range, new_name))
 			{
-				typed_param.enclosingBlock().paramChanged(param, true);
-				typed_param.setProvided(true);
+				typed_param.setProvided();
 				return true;
 			}
 			else if(name_value_lookup_t::valueNamesExist())
@@ -1172,9 +1382,7 @@ namespace LLInitParam
 					if (name_value_lookup_t::getValueFromName(name, value.getValue()))
 					{
 						typed_param.mValues.back().setValueName(name);
-						typed_param.mValues.back().mKeyVersion = value.getLastChangeVersion();
-						typed_param.enclosingBlock().paramChanged(param, true);
-						typed_param.setProvided(true);
+						typed_param.setProvided();
 						return true;
 					}
 
@@ -1201,7 +1409,7 @@ namespace LLInitParam
 				name_stack.back().second = true;
 
 				std::string key = it->getValueName();
-				if (!key.empty() && it->mKeyVersion == it->getLastChangeVersion())
+				if (!key.empty())
 				{
 					parser.writeValue(key, name_stack);
 				}
@@ -1224,22 +1432,31 @@ namespace LLInitParam
 		{
 			mValues = val;
 			setProvided(flag_as_provided);
-			Param::enclosingBlock().paramChanged(*this, flag_as_provided);
 		}
 
-		value_t& add()
+		param_value_t& add()
 		{
 			mValues.push_back(value_t());
-			setProvided(true);
-			Param::enclosingBlock().paramChanged(*this, true);
+			setProvided();
 			return mValues.back();
 		}
 
 		void add(const value_t& item)
 		{
 			mValues.push_back(item);
-			setProvided(true);
-			Param::enclosingBlock().paramChanged(*this, true);
+			setProvided();
+		}
+
+		void add(typename const name_value_lookup_t::name_t& name)
+		{
+			value_t value;
+
+			// try to parse a per type named value
+			if (name_value_lookup_t::getValueFromName(name, value))
+			{
+				add(value);
+				mValues.back().setValueName(name);
+			}
 		}
 
 		// implicit conversion
@@ -1288,8 +1505,7 @@ namespace LLInitParam
 
 			if (src_typed_param.begin() != src_typed_param.end())
 			{
-				dst_typed_param.setProvided(true);
-				dst_typed_param.enclosingBlock().paramChanged(dst_typed_param, true);
+				dst_typed_param.setProvided();
 			}
 
 			return true;
@@ -1298,24 +1514,25 @@ namespace LLInitParam
 		container_t			mValues;
 	};
 
-	template <typename DERIVED_BLOCK>
-	class ChoiceBlock : public BaseBlock
+	template <typename DERIVED_BLOCK, typename BASE_BLOCK = BaseBlock>
+	class ChoiceBlock : public BASE_BLOCK
 	{
-		typedef ChoiceBlock<DERIVED_BLOCK>	self_t;
-		typedef ChoiceBlock<DERIVED_BLOCK>	enclosing_block_t;
+		typedef ChoiceBlock<DERIVED_BLOCK, BASE_BLOCK>	self_t;
+		typedef ChoiceBlock<DERIVED_BLOCK, BASE_BLOCK>	enclosing_block_t;
+		typedef BASE_BLOCK								base_block_t;
 		
 		LOG_CLASS(self_t);
 	public:
 		// take all provided params from other and apply to self
 		bool overwriteFrom(const self_t& other)
 		{
-			return mergeBlock(selfBlockDescriptor(), other, true);
+			return static_cast<DERIVED_BLOCK*>(this)->mergeBlock(selfBlockDescriptor(), other, true);
 		}
 
 		// take all provided params that are not already provided, and apply to self
 		bool fillFrom(const self_t& other)
 		{
-			return mergeBlock(selfBlockDescriptor(), other, false);
+			return static_cast<DERIVED_BLOCK*>(this)->mergeBlock(selfBlockDescriptor(), other, false);
 		}
 
 		bool mergeBlockParam(bool source_provided, bool dest_provided, BlockDescriptor& block_data, const self_t& source, bool overwrite)
@@ -1333,25 +1550,25 @@ namespace LLInitParam
 		bool mergeBlock(BlockDescriptor& block_data, const self_t& other, bool overwrite)
 		{
 			mCurChoice = other.mCurChoice;
-			return BaseBlock::mergeBlock(selfBlockDescriptor(), other, overwrite);
+			return base_block_t::mergeBlock(selfBlockDescriptor(), other, overwrite);
 		}
 
 		// clear out old choice when param has changed
 		/*virtual*/ void paramChanged(const Param& changed_param, bool user_provided)
 		{ 
-			param_handle_t changed_param_handle = BaseBlock::getHandleFromParam(&changed_param);
+			param_handle_t changed_param_handle = base_block_t::getHandleFromParam(&changed_param);
 			// if we have a new choice...
 			if (changed_param_handle != mCurChoice)
 			{
 				// clear provided flag on previous choice
-				Param* previous_choice = BaseBlock::getParamFromHandle(mCurChoice);
+				Param* previous_choice = base_block_t::getParamFromHandle(mCurChoice);
 				if (previous_choice) 
 				{
 					previous_choice->setProvided(false);
 				}
 				mCurChoice = changed_param_handle;
 			}
-			BaseBlock::paramChanged(changed_param, user_provided);
+			base_block_t::paramChanged(changed_param, user_provided);
 		}
 
 		virtual const BlockDescriptor& mostDerivedBlockDescriptor() const { return selfBlockDescriptor(); }
@@ -1361,7 +1578,7 @@ namespace LLInitParam
 		ChoiceBlock()
 		:	mCurChoice(0)
 		{
-			BaseBlock::init(selfBlockDescriptor(), BaseBlock::selfBlockDescriptor(), sizeof(DERIVED_BLOCK));
+			BaseBlock::init(selfBlockDescriptor(), base_block_t::selfBlockDescriptor(), sizeof(DERIVED_BLOCK));
 		}
 
 		// Alternatives are mutually exclusive wrt other Alternatives in the same block.  
@@ -1377,6 +1594,8 @@ namespace LLInitParam
 			typedef TypedParam<T, NAME_VALUE_LOOKUP, false, IsBlock<ParamValue<T, NAME_VALUE_LOOKUP> >::value>		super_t;
 			typedef typename super_t::value_assignment_t								value_assignment_t;
 
+			using super_t::operator =;
+
 			explicit Alternative(const char* name = "", value_assignment_t val = defaultValue<T>())
 			:	super_t(DERIVED_BLOCK::selfBlockDescriptor(), name, val, NULL, 0, 1),
 				mOriginalValue(val)
@@ -1402,7 +1621,7 @@ namespace LLInitParam
 				super_t::set(val);
 			}
 
-			void operator=(value_assignment_t val)
+			void operator =(value_assignment_t val)
 			{
 				super_t::set(val);
 			}
@@ -1447,7 +1666,7 @@ namespace LLInitParam
 
 		const Param* getCurrentChoice() const
 		{
-			return BaseBlock::getParamFromHandle(mCurChoice);
+			return base_block_t::getParamFromHandle(mCurChoice);
 		}
 	};
 
@@ -1493,13 +1712,16 @@ namespace LLInitParam
 			typedef TypedParam<T, NAME_VALUE_LOOKUP, false, IsBlock<ParamValue<T, NAME_VALUE_LOOKUP> >::value>		super_t;
 			typedef typename super_t::value_assignment_t								value_assignment_t;
 
+			using super_t::operator();
+			using super_t::operator =;
+			
 			explicit Optional(const char* name = "", value_assignment_t val = defaultValue<T>())
 			:	super_t(DERIVED_BLOCK::selfBlockDescriptor(), name, val, NULL, 0, 1)
 			{
 				//#pragma message("Parsing LLInitParam::Block::Optional")
 			}
 
-			Optional& operator=(value_assignment_t val)
+			Optional& operator =(value_assignment_t val)
 			{
 				set(val);
 				return *this;
@@ -1510,7 +1732,6 @@ namespace LLInitParam
 				super_t::set(val);
 				return static_cast<DERIVED_BLOCK&>(Param::enclosingBlock());
 			}
-			using super_t::operator();
 		};
 
 		template <typename T, typename NAME_VALUE_LOOKUP = TypeValues<T> >
@@ -1521,12 +1742,15 @@ namespace LLInitParam
 			typedef Mandatory<T, NAME_VALUE_LOOKUP>										self_t;
 			typedef typename super_t::value_assignment_t								value_assignment_t;
 
+			using super_t::operator();
+			using super_t::operator =;
+
 			// mandatory parameters require a name to be parseable
 			explicit Mandatory(const char* name = "", value_assignment_t val = defaultValue<T>())
 			:	super_t(DERIVED_BLOCK::selfBlockDescriptor(), name, val, &validate, 1, 1)
 			{}
 
-			Mandatory& operator=(value_assignment_t val)
+			Mandatory& operator =(value_assignment_t val)
 			{
 				set(val);
 				return *this;
@@ -1537,7 +1761,6 @@ namespace LLInitParam
 				super_t::set(val);
 				return static_cast<DERIVED_BLOCK&>(Param::enclosingBlock());
 			}
-			using super_t::operator();
 
 			static bool validate(const Param* p)
 			{
@@ -1562,7 +1785,7 @@ namespace LLInitParam
 			:	super_t(DERIVED_BLOCK::selfBlockDescriptor(), name, container_t(), &validate, RANGE::minCount, RANGE::maxCount)
 			{}
 
-			Multiple& operator=(value_assignment_t val)
+			Multiple& operator =(value_assignment_t val)
 			{
 				set(val);
 				return *this;
@@ -1690,18 +1913,15 @@ namespace LLInitParam
 	public:
 		typedef BatchBlock<DERIVED_BLOCK, BASE_BLOCK> block_t;
 		typedef const BatchBlock<DERIVED_BLOCK, BASE_BLOCK>&	value_assignment_t;
+		typedef block_t value_t;
 
 		ParamValue()
 		:	block_t(),
-			mKeyVersion(0),
-			mValidatedVersion(-1),
 			mValidated(false)
 		{}
 
 		ParamValue(value_assignment_t other)
 		:	block_t(other),
-			mKeyVersion(0),
-			mValidatedVersion(-1),
 			mValidated(false)
 		{
 		}
@@ -1731,11 +1951,80 @@ namespace LLInitParam
 			return *this;
 		}
 
-		S32 			mKeyVersion;
+	protected:
+		mutable bool 	mValidated; // lazy validation flag
+	};
+
+	template<typename T, bool IS_BLOCK>
+	class ParamValue <BaseBlock::Lazy<T>,
+					TypeValues<T>,
+					IS_BLOCK>
+	:	public IsBlock<T>::base_class_t
+	{
+	public:
+		typedef ParamValue <BaseBlock::Lazy<T>, TypeValues<T>, false> self_t;
+		typedef const T& value_assignment_t;
+		typedef T value_t;
+	
+		ParamValue()
+		:	mValue(),
+			mValidated(false)
+		{}
+
+		ParamValue(value_assignment_t other)
+		:	mValue(other),
+			mValidated(false)
+		{}
+
+		void setValue(value_assignment_t val)
+		{
+			mValue.set(val);
+		}
+
+		value_assignment_t getValue() const
+		{
+			return mValue.get();
+		}
+
+		T& getValue()
+		{
+			return mValue.get();
+		}
+
+		operator value_assignment_t() const
+		{
+			return mValue.get();
+		}
+
+		value_assignment_t operator()() const
+		{
+			return mValue.get();
+		}
+
+		bool deserializeBlock(Parser& p, Parser::name_stack_range_t name_stack_range, bool new_name)
+		{
+			return mValue.get().deserializeBlock(p, name_stack_range, new_name);
+		}
+
+		void serializeBlock(Parser& p, Parser::name_stack_t& name_stack, const BaseBlock* diff_block = NULL) const
+		{
+			if (mValue.empty()) return;
+			
+			mValue.get().serializeBlock(p, name_stack, diff_block);
+		}
+
+		bool inspectBlock(Parser& p, Parser::name_stack_t name_stack = Parser::name_stack_t(), S32 min_count = 0, S32 max_count = S32_MAX) const
+		{
+			if (mValue.empty()) return false;
+
+			return mValue.get().inspectBlock(p, name_stack, min_count, max_count);
+		}
 
 	protected:
-		mutable S32 	mValidatedVersion;
 		mutable bool 	mValidated; // lazy validation flag
+
+	private:
+		BaseBlock::Lazy<T>	mValue;
 	};
 
 	template <>
@@ -1750,15 +2039,11 @@ namespace LLInitParam
 		typedef const LLSD&	value_assignment_t;
 
 		ParamValue()
-		:	mKeyVersion(0),
-			mValidatedVersion(-1),
-			mValidated(false)
+		:	mValidated(false)
 		{}
 
 		ParamValue(value_assignment_t other)
 		:	mValue(other),
-			mKeyVersion(0),
-			mValidatedVersion(-1),
 			mValidated(false)
 		{}
 
@@ -1770,7 +2055,6 @@ namespace LLInitParam
 		operator value_assignment_t() const { return mValue; }
 		value_assignment_t operator()() const { return mValue; }
 		
-		S32 			mKeyVersion;
 
 		// block param interface
 		bool deserializeBlock(Parser& p, Parser::name_stack_range_t name_stack_range, bool new_name);
@@ -1782,7 +2066,6 @@ namespace LLInitParam
 		}
 
 	protected:
-		mutable S32 	mValidatedVersion;
 		mutable bool 	mValidated; // lazy validation flag
 
 	private:
@@ -1806,14 +2089,14 @@ namespace LLInitParam
 
 		typedef ParamValue<T, TypeValues<T> >	derived_t;
 		typedef CustomParamValue<T>				self_t;
-		typedef Block<derived_t>		block_t;
+		typedef Block<derived_t>				block_t;
 		typedef const T&						value_assignment_t;
+		typedef T								value_t;
+
 
 		CustomParamValue(const T& value = T())
 		:	mValue(value),
 			mValueAge(VALUE_AUTHORITATIVE),
-			mKeyVersion(0),
-			mValidatedVersion(-1),
 			mValidated(false)
 		{}
 
@@ -1966,8 +2249,6 @@ namespace LLInitParam
 			return getValue();
 		}
 
-		S32 				mKeyVersion;
-
 	protected:
 
 		// use this from within updateValueFromBlock() to set the value without making it authoritative
@@ -2001,7 +2282,6 @@ namespace LLInitParam
 			return block_t::mergeBlock(block_data, source, overwrite);
 		}
 
-		mutable S32			mValidatedVersion;
 		mutable bool 		mValidated; // lazy validation flag
 
 	private:
diff --git a/indra/llxuixml/llxuiparser.cpp b/indra/llxuixml/llxuiparser.cpp
index 878f992178..90c2671242 100644
--- a/indra/llxuixml/llxuiparser.cpp
+++ b/indra/llxuixml/llxuiparser.cpp
@@ -59,28 +59,24 @@ const char* NO_VALUE_MARKER = "no_value";
 
 const S32 LINE_NUMBER_HERE = 0;
 
-struct MaxOccur : public LLInitParam::ChoiceBlock<MaxOccur>
+struct MaxOccursValues : public LLInitParam::TypeValuesHelper<U32, MaxOccursValues>
 {
-	Alternative<int> count;
-	Alternative<std::string> unbounded;
-
-	MaxOccur()
-	:	unbounded("", "unbounded")
-	{}
+	static void declareValues()
+	{
+		declare("unbounded", U32_MAX);
+	}
 };
 
 struct Occurs : public LLInitParam::Block<Occurs>
 {
-	Optional<S32>	minOccurs;
-	Optional<MaxOccur>	maxOccurs;
+	Optional<U32>					minOccurs;
+	Optional<U32, MaxOccursValues>	maxOccurs;
 
 	Occurs()
-	:	minOccurs("minOccurs"),
-		maxOccurs("maxOccurs")
-	{
-		minOccurs = 0;
-		maxOccurs.unbounded.choose();
-	}
+	:	minOccurs("minOccurs", 0),
+		maxOccurs("maxOccurs", U32_MAX)
+
+	{}
 };
 
 
@@ -103,18 +99,15 @@ namespace LLInitParam
 	};
 }
 
-struct Name : public LLInitParam::Block<Name>
-{
-	Mandatory<std::string> name;
-
-	Name()
-	:	name("name")
-	{}
-};
+struct Element;
+struct Group;
+struct Choice;
+struct Sequence;
+struct Any;
 
 struct Attribute : public LLInitParam::Block<Attribute>
 {
-	Mandatory<Name>			name;
+	Mandatory<std::string>	name;
 	Mandatory<std::string>	type;
 	Mandatory<EUse>			use;
 	
@@ -122,41 +115,170 @@ struct Attribute : public LLInitParam::Block<Attribute>
 	:	name("name"),
 		type("type"),
 		use("use")
+	{}
+};
+
+struct Any : public LLInitParam::Block<Any, Occurs>
+{
+	Optional<std::string> _namespace;
+
+	Any()
+	:	_namespace("namespace")
+	{}
+};
+
+struct All : public LLInitParam::Block<All, Occurs>
+{
+	Multiple<Lazy<Element>> elements;
+
+	All()
+	:	elements("element")
 	{
+		maxOccurs = 1;
 	}
 };
 
-struct ComplexType : public LLInitParam::Block<ComplexType>
+struct Choice : public LLInitParam::ChoiceBlock<Choice, Occurs>
+{
+	Alternative<Lazy<Element>>	element;
+	Alternative<Lazy<Group>>	group;
+	Alternative<Lazy<Choice>>	choice;
+	Alternative<Lazy<Sequence>>	sequence;
+	Alternative<Lazy<Any>>		any;
+
+	Choice()
+	:	element("element"),
+		group("group"),
+		choice("choice"),
+		sequence("sequence"),
+		any("any")
+	{}
+
+};
+
+struct Sequence : public LLInitParam::ChoiceBlock<Sequence, Occurs>
+{
+	Alternative<Lazy<Element>>	element;
+	Alternative<Lazy<Group>>	group;
+	Alternative<Lazy<Choice>>	choice;
+	Alternative<Lazy<Sequence>>	sequence;
+	Alternative<Lazy<Any>>		any;
+};
+
+struct GroupContents : public LLInitParam::ChoiceBlock<GroupContents, Occurs>
+{
+	Alternative<All>		all;
+	Alternative<Choice>		choice;
+	Alternative<Sequence>	sequence;
+
+	GroupContents()
+	:	all("all"),
+		choice("choice"),
+		sequence("sequence")
+	{}
+};
+
+struct Group : public LLInitParam::Block<Group, GroupContents>
+{
+	Optional<std::string>	name,
+							ref;
+
+	Group()
+	:	name("name"),
+		ref("ref")
+	{}
+};
+
+struct Restriction : public LLInitParam::Block<Restriction>
+{
+};
+
+struct Extension : public LLInitParam::Block<Extension>
+{
+};
+
+struct SimpleContent : public LLInitParam::ChoiceBlock<SimpleContent>
+{
+	Alternative<Restriction> restriction;
+	Alternative<Extension> extension;
+
+	SimpleContent()
+	:	restriction("restriction"),
+		extension("extension")
+	{}
+};
+
+struct SimpleType : public LLInitParam::Block<SimpleType>
+{
+	// TODO
+};
+
+struct ComplexContent : public LLInitParam::Block<ComplexContent, SimpleContent>
 {
-	Multiple<Attribute>			attribute;
-	//Multiple<struct Element>	elements;
-	Optional<bool>				mixed;
+	Optional<bool> mixed;
+
+	ComplexContent()
+	:	mixed("mixed", true)
+	{}
+};
+
+struct ComplexTypeContents : public LLInitParam::ChoiceBlock<ComplexTypeContents>
+{
+	Alternative<SimpleContent>	simple_content;
+	Alternative<ComplexContent> complex_content;
+	Alternative<Group>			group;
+	Alternative<All>			all;
+	Alternative<Choice>			choice;
+	Alternative<Sequence>		sequence;
+
+	ComplexTypeContents()
+	:	simple_content("simpleContent"),
+		complex_content("complexContent"),
+		group("group"),
+		all("all"),
+		choice("choice"),
+		sequence("sequence")
+	{}
+};
+
+struct ComplexType : public LLInitParam::Block<ComplexType, ComplexTypeContents>
+{
+	Optional<std::string>			name;
+	Optional<bool>					mixed;
+
+	Multiple<Attribute>				attribute;
+	Multiple<Lazy<Element>>			elements;
 
 	ComplexType()
-	:	attribute("xs:attribute"),
-		//elements("xs:element"),
+	:	name("name"),
+		attribute("xs:attribute"),
+		elements("xs:element"),
 		mixed("mixed")
 	{
-		mixed = true;
 	}
 };
 
-struct Element : public LLInitParam::Block<Element, Occurs>
+struct ElementContents : public LLInitParam::ChoiceBlock<ElementContents, Occurs>
 {
-	Mandatory<ComplexType>	complexType;
-	Mandatory<Name>			name;
+	Alternative<SimpleType>		simpleType;
+	Alternative<ComplexType>	complexType;
 
-	Element()
-	:	complexType("xs:complexType")
+	ElementContents()
+	:	simpleType("simpleType"),
+		complexType("complexType")
 	{}
 };
 
-struct Elements : public LLInitParam::Block<Elements, Occurs>
+struct Element : public LLInitParam::Block<Element, ElementContents>
 {
-	Multiple<Element> elements;
+	Optional<std::string>	name,
+							ref,
+							type;
 
-	Elements()
-	:	elements("xs:element")
+	Element()
+	:	name("xs:name"),
+		ref("xs:ref"),
+		type("xs:type")
 	{}
 };
 
@@ -164,28 +286,32 @@ struct Schema : public LLInitParam::Block<Schema>
 {
 private:
 	Mandatory<std::string>	targetNamespace,
-							xmlns;
+							xmlns,
+							xs;
 
 public:
 	Optional<std::string>	attributeFormDefault,
-							elementFormDefault,
-							xs;
+							elementFormDefault;
 
-	Optional<Elements>		elements;
+	Mandatory<Element>		root_element;
 	
 	void setNameSpace(const std::string& ns) {targetNamespace = ns; xmlns = ns;}
 
-	Schema()
+	Schema(const std::string& ns = LLStringUtil::null)
 	:	attributeFormDefault("attributeFormDefault"),
 		elementFormDefault("elementFormDefault"),
 		xs("xmlns:xs"),
 		targetNamespace("targetNamespace"),
 		xmlns("xmlns"),
-		elements("xs:choice")
+		root_element("xs:element")
 	{
 		attributeFormDefault = "unqualified";
 		elementFormDefault = "qualified";
 		xs = "http://www.w3.org/2001/XMLSchema";
+		if (!ns.empty())
+		{
+			setNameSpace(ns);
+		};
 	}
 
 };
@@ -214,22 +340,30 @@ LLXSDWriter::LLXSDWriter()
 
 void LLXSDWriter::writeXSD(const std::string& type_name, LLXMLNodePtr node, const LLInitParam::BaseBlock& block, const std::string& xml_namespace)
 {
+	Schema schema(xml_namespace);
+
+	schema.root_element.name = type_name;
+	Choice& choice = schema.root_element.complexType.choice;
+
+	choice.minOccurs = 0;
+	choice.maxOccurs = "unbounded";
+
 	mSchemaNode = node;
-	node->setName("xs:schema");
-	node->createChild("attributeFormDefault", true)->setStringValue("unqualified");
-	node->createChild("elementFormDefault", true)->setStringValue("qualified");
-	node->createChild("targetNamespace", true)->setStringValue(xml_namespace);
-	node->createChild("xmlns:xs", true)->setStringValue("http://www.w3.org/2001/XMLSchema");
-	node->createChild("xmlns", true)->setStringValue(xml_namespace);
-
-	node = node->createChild("xs:complexType", false);
-	node->createChild("name", true)->setStringValue(type_name);
-	node->createChild("mixed", true)->setStringValue("true");
-
-	mAttributeNode = node;
-	mElementNode = node->createChild("xs:choice", false);
-	mElementNode->createChild("minOccurs", true)->setStringValue("0");
-	mElementNode->createChild("maxOccurs", true)->setStringValue("unbounded");
+	//node->setName("xs:schema");
+	//node->createChild("attributeFormDefault", true)->setStringValue("unqualified");
+	//node->createChild("elementFormDefault", true)->setStringValue("qualified");
+	//node->createChild("targetNamespace", true)->setStringValue(xml_namespace);
+	//node->createChild("xmlns:xs", true)->setStringValue("http://www.w3.org/2001/XMLSchema");
+	//node->createChild("xmlns", true)->setStringValue(xml_namespace);
+
+	//node = node->createChild("xs:complexType", false);
+	//node->createChild("name", true)->setStringValue(type_name);
+	//node->createChild("mixed", true)->setStringValue("true");
+
+	//mAttributeNode = node;
+	//mElementNode = node->createChild("xs:choice", false);
+	//mElementNode->createChild("minOccurs", true)->setStringValue("0");
+	//mElementNode->createChild("maxOccurs", true)->setStringValue("unbounded");
 	block.inspectBlock(*this);
 
 	// duplicate element choices
diff --git a/indra/newview/llfloatercamera.cpp b/indra/newview/llfloatercamera.cpp
index b33dea4890..8c2dd73bd9 100644
--- a/indra/newview/llfloatercamera.cpp
+++ b/indra/newview/llfloatercamera.cpp
@@ -346,7 +346,7 @@ LLFloaterCamera::LLFloaterCamera(const LLSD& val)
 	mCurrMode(CAMERA_CTRL_MODE_PAN),
 	mPrevMode(CAMERA_CTRL_MODE_PAN)
 {
-	LLHints::registerHintTarget("view_popup", LLView::getHandle());
+	LLHints::registerHintTarget("view_popup", getHandle());
 	mCommitCallbackRegistrar.add("CameraPresets.ChangeView", boost::bind(&LLFloaterCamera::onClickCameraItem, _2));
 }
 
diff --git a/indra/newview/llfloaterwebcontent.cpp b/indra/newview/llfloaterwebcontent.cpp
index f410c31f44..d6db7aa6ad 100644
--- a/indra/newview/llfloaterwebcontent.cpp
+++ b/indra/newview/llfloaterwebcontent.cpp
@@ -167,7 +167,7 @@ LLFloater* LLFloaterWebContent::create( Params p)
 //static
 void LLFloaterWebContent::closeRequest(const std::string &uuid)
 {
-	LLFloaterWebContent* floaterp = getInstance(uuid);
+	LLFloaterWebContent* floaterp = instance_tracker_t::getInstance(uuid);
 	if (floaterp)
 	{
 		floaterp->closeFloater(false);
@@ -177,7 +177,7 @@ void LLFloaterWebContent::closeRequest(const std::string &uuid)
 //static
 void LLFloaterWebContent::geometryChanged(const std::string &uuid, S32 x, S32 y, S32 width, S32 height)
 {
-	LLFloaterWebContent* floaterp = getInstance(uuid);
+	LLFloaterWebContent* floaterp = instance_tracker_t::getInstance(uuid);
 	if (floaterp)
 	{
 		floaterp->geometryChanged(x, y, width, height);
diff --git a/indra/newview/llfloaterwebcontent.h b/indra/newview/llfloaterwebcontent.h
index 6fc66d1ad8..9d90306a9c 100644
--- a/indra/newview/llfloaterwebcontent.h
+++ b/indra/newview/llfloaterwebcontent.h
@@ -43,6 +43,7 @@ class LLFloaterWebContent :
 	public LLInstanceTracker<LLFloaterWebContent, std::string>
 {
 public:
+	typedef LLInstanceTracker<LLFloaterWebContent, std::string> instance_tracker_t;
     LOG_CLASS(LLFloaterWebContent);
 
 	struct _Params : public LLInitParam::Block<_Params>
diff --git a/indra/newview/llnavigationbar.cpp b/indra/newview/llnavigationbar.cpp
index 146bcbe47b..2a08cb1845 100644
--- a/indra/newview/llnavigationbar.cpp
+++ b/indra/newview/llnavigationbar.cpp
@@ -317,7 +317,7 @@ BOOL LLNavigationBar::postBuild()
 	LLTeleportHistory::getInstance()->setHistoryChangedCallback(
 			boost::bind(&LLNavigationBar::onTeleportHistoryChanged, this));
 
-	LLHints::registerHintTarget("nav_bar", LLView::getHandle());
+	LLHints::registerHintTarget("nav_bar", getHandle());
 
 	return TRUE;
 }
diff --git a/indra/newview/lltoast.h b/indra/newview/lltoast.h
index 242f786bf2..380c2c391a 100644
--- a/indra/newview/lltoast.h
+++ b/indra/newview/lltoast.h
@@ -196,7 +196,7 @@ public:
 
 	virtual S32	notifyParent(const LLSD& info);
 
-	LLHandle<LLToast> getHandle() { mHandle.bind(this); return mHandle; }
+	LLHandle<LLToast> getHandle() const { return getDerivedHandle<LLToast>(); }
 
 protected:
 	void updateTransparency();
@@ -215,7 +215,7 @@ private:
 	LLUUID				mSessionID;
 	LLNotificationPtr	mNotification;
 
-	LLRootHandle<LLToast>	mHandle;
+	//LLRootHandle<LLToast>	mHandle;
 		
 	LLPanel* mWrapperPanel;