Automated merge with file:///Users/nat/linden/viewer-leap-daggy

31 files changed, 3443 insertions, 1081 deletions

diff --git a/indra/llui/CMakeLists.txt b/indra/llui/CMakeLists.txt
index 772f173f17..20c3456a56 100644
--- a/indra/llui/CMakeLists.txt
+++ b/indra/llui/CMakeLists.txt
@@ -12,7 +12,6 @@ include(LLRender)
 include(LLWindow)
 include(LLVFS)
 include(LLXML)
-include(LLXUIXML)
 
 include_directories(
     ${LLCOMMON_INCLUDE_DIRS}
@@ -24,7 +23,6 @@ include_directories(
     ${LLWINDOW_INCLUDE_DIRS}
     ${LLVFS_INCLUDE_DIRS}
     ${LLXML_INCLUDE_DIRS}
-    ${LLXUIXML_INCLUDE_DIRS}
     )
 
 set(llui_SOURCE_FILES
@@ -83,7 +81,6 @@ set(llui_SOURCE_FILES
     llscrolllistcolumn.cpp
     llscrolllistctrl.cpp
     llscrolllistitem.cpp
-    llsdparam.cpp
     llsearcheditor.cpp
     llslider.cpp
     llsliderctrl.cpp
@@ -100,11 +97,13 @@ set(llui_SOURCE_FILES
     lltextutil.cpp
     lltextvalidate.cpp
     lltimectrl.cpp
+    lltrans.cpp
     lltransutil.cpp
     lltoggleablemenu.cpp
     lltoolbar.cpp
     lltooltip.cpp
     llui.cpp
+    lluicolor.cpp
     lluicolortable.cpp
     lluictrl.cpp
     lluictrlfactory.cpp
@@ -121,6 +120,7 @@ set(llui_SOURCE_FILES
     llview.cpp
     llviewquery.cpp
     llwindowshade.cpp
+    llxuiparser.cpp
     )
     
 set(llui_HEADER_FILES
@@ -189,7 +189,6 @@ set(llui_HEADER_FILES
     llscrolllistcolumn.h
     llscrolllistctrl.h
     llscrolllistitem.h
-    llsdparam.h
     llsliderctrl.h
     llslider.h
     llspinctrl.h
@@ -208,6 +207,7 @@ set(llui_HEADER_FILES
     lltoggleablemenu.h
     lltoolbar.h
     lltooltip.h
+    lltrans.h
     lltransutil.h
     lluicolortable.h
     lluiconstants.h
@@ -215,6 +215,7 @@ set(llui_HEADER_FILES
     lluictrl.h
     lluifwd.h
     llui.h
+    lluicolor.h
     lluiimage.h
     lluistring.h
     llundo.h
@@ -228,6 +229,7 @@ set(llui_HEADER_FILES
     llview.h
     llviewquery.h
     llwindowshade.h
+    llxuiparser.h
     )
 
 set_source_files_properties(${llui_HEADER_FILES}
diff --git a/indra/llui/llbutton.cpp b/indra/llui/llbutton.cpp
index 93d8282aa7..f0d92d597a 100644
--- a/indra/llui/llbutton.cpp
+++ b/indra/llui/llbutton.cpp
@@ -589,15 +589,23 @@ void LLButton::getOverlayImageSize(S32& overlay_width, S32& overlay_height)
 // virtual
 void LLButton::draw()
 {
+	static LLCachedControl<bool> sEnableButtonFlashing(*LLUI::sSettingGroups["config"], "EnableButtonFlashing", true);
 	F32 alpha = mUseDrawContextAlpha ? getDrawContext().mAlpha : getCurrentTransparency();
 	bool flash = FALSE;
 
-	if( mFlashing )
+	if( mFlashing)
 	{
-		F32 elapsed = mFlashingTimer.getElapsedTimeF32();
-		S32 flash_count = S32(elapsed * mButtonFlashRate * 2.f);
-		// flash on or off?
-		flash = (flash_count % 2 == 0) || flash_count > S32((F32)mButtonFlashCount * 2.f);
+		if ( sEnableButtonFlashing)
+		{
+			F32 elapsed = mFlashingTimer.getElapsedTimeF32();
+			S32 flash_count = S32(elapsed * mButtonFlashRate * 2.f);
+			// flash on or off?
+			flash = (flash_count % 2 == 0) || flash_count > S32((F32)mButtonFlashCount * 2.f);
+		}
+		else
+		{ // otherwise just highlight button in flash color
+			flash = true;
+		}
 	}
 
 	bool pressed_by_keyboard = FALSE;
diff --git a/indra/llui/lllayoutstack.cpp b/indra/llui/lllayoutstack.cpp
index 0e7060e22c..2f1c2a47c9 100644
--- a/indra/llui/lllayoutstack.cpp
+++ b/indra/llui/lllayoutstack.cpp
@@ -34,6 +34,10 @@
 #include "llpanel.h"
 #include "llresizebar.h"
 #include "llcriticaldamp.h"
+#include "boost/foreach.hpp"
+
+static const F32 MIN_FRACTIONAL_SIZE = 0.0001f;
+static const F32 MAX_FRACTIONAL_SIZE = 1.f;
 
 static LLDefaultChildRegistry::Register<LLLayoutStack> register_layout_stack("layout_stack");
 static LLLayoutStack::LayoutStackRegistry::Register<LLLayoutPanel> register_layout_panel("layout_panel");
@@ -49,39 +53,29 @@ void LLLayoutStack::OrientationNames::declareValues()
 //
 LLLayoutPanel::Params::Params()	
 :	expanded_min_dim("expanded_min_dim", 0),
-	min_dim("min_dim", 0),
-	max_dim("max_dim", S32_MAX),
-	user_resize("user_resize", true),
+	min_dim("min_dim", -1),
+	user_resize("user_resize", false),
 	auto_resize("auto_resize", true)
 {
 	addSynonym(min_dim, "min_width");
 	addSynonym(min_dim, "min_height");
-	addSynonym(max_dim, "max_width");
-	addSynonym(max_dim, "max_height");
 }
 
 LLLayoutPanel::LLLayoutPanel(const Params& p)	
 :	LLPanel(p),
-	mExpandedMinDimSpecified(false),
-	mExpandedMinDim(p.min_dim),
+	mExpandedMinDim(p.expanded_min_dim.isProvided() ? p.expanded_min_dim : p.min_dim),
  	mMinDim(p.min_dim), 
- 	mMaxDim(p.max_dim), 
  	mAutoResize(p.auto_resize),
  	mUserResize(p.user_resize),
 	mCollapsed(FALSE),
 	mCollapseAmt(0.f),
 	mVisibleAmt(1.f), // default to fully visible
 	mResizeBar(NULL),
-	mFractionalSize(0.f),
+	mFractionalSize(MIN_FRACTIONAL_SIZE),
+	mTargetDim(0),
+	mIgnoreReshape(false),
 	mOrientation(LLLayoutStack::HORIZONTAL)
 {
-	// Set the expanded min dim if it is provided, otherwise it gets the p.min_dim value
-	if (p.expanded_min_dim.isProvided())
-	{
-		mExpandedMinDimSpecified = true;
-		mExpandedMinDim = p.expanded_min_dim();
-	}
-	
 	// panels initialized as hidden should not start out partially visible
 	if (!getVisible())
 	{
@@ -103,33 +97,83 @@ LLLayoutPanel::~LLLayoutPanel()
 	mResizeBar = NULL;
 }
 
-void LLLayoutPanel::reshape(S32 width, S32 height, BOOL called_from_parent)
+F32 LLLayoutPanel::getAutoResizeFactor() const
+{
+	return mVisibleAmt * (1.f - mCollapseAmt);
+}
+ 
+F32 LLLayoutPanel::getVisibleAmount() const
+{
+	return mVisibleAmt;
+}
+
+S32 LLLayoutPanel::getLayoutDim() const
+{
+	return llround((F32)((mOrientation == LLLayoutStack::HORIZONTAL)
+					? getRect().getWidth()
+					: getRect().getHeight()));
+}
+ 
+S32 LLLayoutPanel::getVisibleDim() const
+{
+	F32 min_dim = getRelevantMinDim();
+	return llround(mVisibleAmt
+					* (min_dim
+						+ (((F32)mTargetDim - min_dim) * (1.f - mCollapseAmt))));
+}
+ 
+void LLLayoutPanel::setOrientation( LLLayoutStack::ELayoutOrientation orientation )
+{
+	mOrientation = orientation;
+	S32 layout_dim = llround((F32)((mOrientation == LLLayoutStack::HORIZONTAL)
+		? getRect().getWidth()
+		: getRect().getHeight()));
+
+	mTargetDim = llmax(layout_dim, getMinDim());
+}
+ 
+void LLLayoutPanel::setVisible( BOOL visible )
 {
-	if (mOrientation == LLLayoutStack::HORIZONTAL)
+	if (visible != getVisible())
 	{
-		mFractionalSize += width - llround(mFractionalSize);
+		LLLayoutStack* stackp = dynamic_cast<LLLayoutStack*>(getParent());
+		if (stackp)
+		{
+			stackp->mNeedsLayout = true;
+		}
 	}
-	else
+	LLPanel::setVisible(visible);
+}
+
+void LLLayoutPanel::reshape( S32 width, S32 height, BOOL called_from_parent /*= TRUE*/ )
+{
+	if (width == getRect().getWidth() && height == getRect().getHeight()) return;
+
+	if (!mIgnoreReshape && mAutoResize == false)
 	{
-		mFractionalSize += height - llround(mFractionalSize);
+		mTargetDim = (mOrientation == LLLayoutStack::HORIZONTAL) ? width : height;
+		LLLayoutStack* stackp = dynamic_cast<LLLayoutStack*>(getParent());
+		if (stackp)
+		{
+			stackp->mNeedsLayout = true;
+		}
 	}
 	LLPanel::reshape(width, height, called_from_parent);
 }
 
-F32 LLLayoutPanel::getCollapseFactor()
+void LLLayoutPanel::handleReshape(const LLRect& new_rect, bool by_user)
 {
-	if (mOrientation == LLLayoutStack::HORIZONTAL)
+	LLLayoutStack* stackp = dynamic_cast<LLLayoutStack*>(getParent());
+	if (stackp)
 	{
-		F32 collapse_amt = 
-			clamp_rescale(mCollapseAmt, 0.f, 1.f, 1.f, (F32)getRelevantMinDim() / (F32)llmax(1, getRect().getWidth()));
-		return mVisibleAmt * collapse_amt;
-	}
-	else
-	{
-		F32 collapse_amt = 
-			clamp_rescale(mCollapseAmt, 0.f, 1.f, 1.f, llmin(1.f, (F32)getRelevantMinDim() / (F32)llmax(1, getRect().getHeight())));
-		return mVisibleAmt * collapse_amt;
+		stackp->mNeedsLayout = true;
+		if (by_user)
+		{
+			// tell layout stack to account for new shape
+			stackp->updatePanelRect(this, new_rect);
+		}
 	}
+	LLPanel::handleReshape(new_rect, by_user);
 }
 
 //
@@ -142,20 +186,21 @@ LLLayoutStack::Params::Params()
 	clip("clip", true),
 	open_time_constant("open_time_constant", 0.02f),
 	close_time_constant("close_time_constant", 0.03f),
+	resize_bar_overlap("resize_bar_overlap", 1),
 	border_size("border_size", LLCachedControl<S32>(*LLUI::sSettingGroups["config"], "UIResizeBarHeight", 0))
 {}
 
 LLLayoutStack::LLLayoutStack(const LLLayoutStack::Params& p) 
 :	LLView(p),
-	mMinWidth(0),
-	mMinHeight(0),
 	mPanelSpacing(p.border_size),
 	mOrientation(p.orientation),
 	mAnimate(p.animate),
 	mAnimatedThisFrame(false),
+	mNeedsLayout(true),
 	mClip(p.clip),
 	mOpenTimeConstant(p.open_time_constant),
-	mCloseTimeConstant(p.close_time_constant)
+	mCloseTimeConstant(p.close_time_constant),
+	mResizeBarOverlap(p.resize_bar_overlap)
 {}
 
 LLLayoutStack::~LLLayoutStack()
@@ -169,26 +214,26 @@ void LLLayoutStack::draw()
 {
 	updateLayout();
 
-	e_panel_list_t::iterator panel_it;
-	for (panel_it = mPanels.begin(); panel_it != mPanels.end(); ++panel_it)
+	// always clip to stack itself
+	LLLocalClipRect clip(getLocalRect());
+	BOOST_FOREACH(LLLayoutPanel* panelp, mPanels)
 	{
 		// clip to layout rectangle, not bounding rectangle
-		LLRect clip_rect = (*panel_it)->getRect();
+		LLRect clip_rect = panelp->getRect();
 		// scale clipping rectangle by visible amount
 		if (mOrientation == HORIZONTAL)
 		{
-			clip_rect.mRight = clip_rect.mLeft + llround((F32)clip_rect.getWidth() * (*panel_it)->getCollapseFactor());
+			clip_rect.mRight = clip_rect.mLeft + panelp->getVisibleDim();
 		}
 		else
 		{
-			clip_rect.mBottom = clip_rect.mTop - llround((F32)clip_rect.getHeight() * (*panel_it)->getCollapseFactor());
+			clip_rect.mBottom = clip_rect.mTop - panelp->getVisibleDim();
 		}
 
-		LLPanel* panelp = (*panel_it);
-
-		LLLocalClipRect clip(clip_rect, mClip);
-		// only force drawing invisible children if visible amount is non-zero
-		drawChild(panelp, 0, 0, !clip_rect.isEmpty());
+		{LLLocalClipRect clip(clip_rect, mClip);
+			// only force drawing invisible children if visible amount is non-zero
+			drawChild(panelp, 0, 0, !clip_rect.isEmpty());
+		}
 	}
 	mAnimatedThisFrame = false;
 }
@@ -201,12 +246,10 @@ void LLLayoutStack::removeChild(LLView* view)
 	{
 		mPanels.erase(std::find(mPanels.begin(), mPanels.end(), embedded_panelp));
 		delete embedded_panelp;
+		updateFractionalSizes();
+		mNeedsLayout = true;
 	}
 
-	// need to update resizebars
-
-	calcMinExtents();
-
 	LLView::removeChild(view);
 }
 
@@ -221,29 +264,15 @@ bool LLLayoutStack::addChild(LLView* child, S32 tab_group)
 	LLLayoutPanel* panelp = dynamic_cast<LLLayoutPanel*>(child);
 	if (panelp)
 	{
-		panelp->mFractionalSize = (mOrientation == HORIZONTAL)
-									? panelp->getRect().getWidth()
-									: panelp->getRect().getHeight();
 		panelp->setOrientation(mOrientation);
 		mPanels.push_back(panelp);
+		createResizeBar(panelp);
+		mNeedsLayout = true;
 	}
-	return LLView::addChild(child, tab_group);
-}
+	BOOL result = LLView::addChild(child, tab_group);
 
-void LLLayoutStack::movePanel(LLPanel* panel_to_move, LLPanel* target_panel, bool move_to_front)
-{
-	LLLayoutPanel* embedded_panel_to_move = findEmbeddedPanel(panel_to_move);
-	LLLayoutPanel* embedded_target_panel = move_to_front ? *mPanels.begin() : findEmbeddedPanel(target_panel);
-
-	if (!embedded_panel_to_move || !embedded_target_panel || embedded_panel_to_move == embedded_target_panel)
-	{
-		llwarns << "One of the panels was not found in stack or NULL was passed instead of valid panel" << llendl;
-		return;
-	}
-	e_panel_list_t::iterator it = std::find(mPanels.begin(), mPanels.end(), embedded_panel_to_move);
-	mPanels.erase(it);
-	it = move_to_front ? mPanels.begin() : std::find(mPanels.begin(), mPanels.end(), embedded_target_panel);
-	mPanels.insert(it, embedded_panel_to_move);
+	updateFractionalSizes();
+	return result;
 }
 
 void LLLayoutStack::addPanel(LLLayoutPanel* panel, EAnimate animate)
@@ -258,84 +287,274 @@ void LLLayoutStack::addPanel(LLLayoutPanel* panel, EAnimate animate)
 	}
 }
 
-void LLLayoutStack::removePanel(LLPanel* panel)
-{
-	removeChild(panel);
-}
-
 void LLLayoutStack::collapsePanel(LLPanel* panel, BOOL collapsed)
 {
 	LLLayoutPanel* panel_container = findEmbeddedPanel(panel);
 	if (!panel_container) return;
 
 	panel_container->mCollapsed = collapsed;
+	mNeedsLayout = true;
 }
 
-void LLLayoutStack::updatePanelAutoResize(const std::string& panel_name, BOOL auto_resize)
-{
-	LLLayoutPanel* panel = findEmbeddedPanelByName(panel_name);
+static LLFastTimer::DeclareTimer FTM_UPDATE_LAYOUT("Update LayoutStacks");
 
-	if (panel)
+void LLLayoutStack::updateLayout()
+{	
+	LLFastTimer ft(FTM_UPDATE_LAYOUT);
+
+	if (!mNeedsLayout) return;
+
+	bool animation_in_progress = animatePanels();
+	F32 total_visible_fraction = 0.f;
+	F32 total_open_fraction = 0.f;
+	S32 space_to_distribute = (mOrientation == HORIZONTAL)
+							? getRect().getWidth()
+							: getRect().getHeight();
+
+	// first, assign minimum dimensions
+	LLLayoutPanel* panelp = NULL;
+	BOOST_FOREACH(panelp, mPanels)
 	{
-		panel->mAutoResize = auto_resize;
+		if (panelp->mAutoResize)
+		{
+			panelp->mTargetDim = panelp->getRelevantMinDim();
+			if (!panelp->mCollapsed && panelp->getVisible())
+			{
+				total_open_fraction += panelp->mFractionalSize;
+			}
+		}
+		space_to_distribute -= panelp->getVisibleDim() + llround((F32)mPanelSpacing * panelp->getVisibleAmount());
+		total_visible_fraction += panelp->mFractionalSize;
 	}
-}
 
-void LLLayoutStack::setPanelUserResize(const std::string& panel_name, BOOL user_resize)
+	llassert(total_visible_fraction < 1.01f);
+
+	// don't need spacing after last panel
+	space_to_distribute += panelp ? llround((F32)mPanelSpacing * panelp->getVisibleAmount()) : 0;
+
+	F32 fraction_distributed = 0.f;
+	if (space_to_distribute > 0 && total_visible_fraction > 0.f)
+	{	// give space proportionally to visible auto resize panels
+		BOOST_FOREACH(LLLayoutPanel* panelp, mPanels)
+		{
+			if (panelp->mAutoResize)
+			{
+				F32 fraction_to_distribute = (panelp->mFractionalSize * panelp->getAutoResizeFactor()) / (total_visible_fraction);
+				S32 delta = llround((F32)space_to_distribute * fraction_to_distribute);
+				fraction_distributed += fraction_to_distribute;
+				panelp->mTargetDim += delta;
+			}
+		}
+	}
+
+	if (fraction_distributed < total_visible_fraction)
+	{	// distribute any left over pixels to non-collapsed, visible panels
+		F32 fraction_left = total_visible_fraction - fraction_distributed;
+		S32 space_left = llround((F32)space_to_distribute * (fraction_left / total_visible_fraction));
+
+		BOOST_FOREACH(LLLayoutPanel* panelp, mPanels)
+		{
+			if (panelp->mAutoResize 
+				&& !panelp->mCollapsed 
+				&& panelp->getVisible())
+			{
+				S32 space_for_panel = llmax(0, llround((F32)space_left * (panelp->mFractionalSize / total_open_fraction)));
+				panelp->mTargetDim += space_for_panel;
+				space_left -= space_for_panel;
+				total_open_fraction -= panelp->mFractionalSize;
+			}
+		}
+	}
+
+	F32 cur_pos = (mOrientation == HORIZONTAL) ? 0.f : (F32)getRect().getHeight();
+
+	BOOST_FOREACH(LLLayoutPanel* panelp, mPanels)
+	{
+		F32 panel_dim = llmax(panelp->getExpandedMinDim(), panelp->mTargetDim);
+		F32 panel_visible_dim = panelp->getVisibleDim();
+
+		LLRect panel_rect;
+		if (mOrientation == HORIZONTAL)
+		{
+			panel_rect.setLeftTopAndSize(llround(cur_pos),
+										getRect().getHeight(),
+										llround(panel_dim),
+										getRect().getHeight());
+		}
+		else
+		{
+			panel_rect.setLeftTopAndSize(0,
+										llround(cur_pos),
+										getRect().getWidth(),
+										llround(panel_dim));
+		}
+		panelp->setIgnoreReshape(true);
+		panelp->setShape(panel_rect);
+		panelp->setIgnoreReshape(false);
+
+		LLRect resize_bar_rect(panel_rect);
+
+		F32 panel_spacing = (F32)mPanelSpacing * panelp->getVisibleAmount();
+		if (mOrientation == HORIZONTAL)
+		{
+			resize_bar_rect.mLeft = panel_rect.mRight - mResizeBarOverlap;
+			resize_bar_rect.mRight = panel_rect.mRight + (S32)(llround(panel_spacing)) + mResizeBarOverlap;
+
+			cur_pos += panel_visible_dim + panel_spacing;
+		}
+		else //VERTICAL
+		{
+			resize_bar_rect.mTop = panel_rect.mBottom + mResizeBarOverlap;
+			resize_bar_rect.mBottom = panel_rect.mBottom - (S32)(llround(panel_spacing)) - mResizeBarOverlap;
+
+			cur_pos -= panel_visible_dim + panel_spacing;
+		}
+		panelp->mResizeBar->setShape(resize_bar_rect);
+	}
+
+	updateResizeBarLimits();
+
+	// clear animation flag at end, since panel resizes will set it
+	// and leave it set if there is any animation in progress
+	mNeedsLayout = animation_in_progress;
+} // end LLLayoutStack::updateLayout
+
+LLLayoutPanel* LLLayoutStack::findEmbeddedPanel(LLPanel* panelp) const
 {
-	LLLayoutPanel* panel = findEmbeddedPanelByName(panel_name);
+	if (!panelp) return NULL;
 
-	if (panel)
+	e_panel_list_t::const_iterator panel_it;
+	BOOST_FOREACH(LLLayoutPanel* p, mPanels)
 	{
-		panel->mUserResize = user_resize;
+		if (p == panelp)
+		{
+			return p;
+		}
 	}
+	return NULL;
 }
 
-bool LLLayoutStack::getPanelMinSize(const std::string& panel_name, S32* min_dimp)
+LLLayoutPanel* LLLayoutStack::findEmbeddedPanelByName(const std::string& name) const
 {
-	LLLayoutPanel* panel = findEmbeddedPanelByName(panel_name);
+	LLLayoutPanel* result = NULL;
 
-	if (panel && min_dimp)
+	BOOST_FOREACH(LLLayoutPanel* p, mPanels)
 	{
-		*min_dimp = panel->getRelevantMinDim();
+		if (p->getName() == name)
+		{
+			result = p;
+			break;
+		}
 	}
 
-	return NULL != panel;
+	return result;
 }
 
-bool LLLayoutStack::getPanelMaxSize(const std::string& panel_name, S32* max_dimp)
+void LLLayoutStack::createResizeBar(LLLayoutPanel* panelp)
 {
-	LLLayoutPanel* panel = findEmbeddedPanelByName(panel_name);
+	BOOST_FOREACH(LLLayoutPanel* lp, mPanels)
+	{
+		if (lp->mResizeBar == NULL)
+		{
+			LLResizeBar::Side side = (mOrientation == HORIZONTAL) ? LLResizeBar::RIGHT : LLResizeBar::BOTTOM;
+			LLRect resize_bar_rect = getRect();
 
-	if (panel)
+			LLResizeBar::Params resize_params;
+			resize_params.name("resize");
+			resize_params.resizing_view(lp);
+			resize_params.min_size(lp->getRelevantMinDim());
+			resize_params.side(side);
+			resize_params.snapping_enabled(false);
+			LLResizeBar* resize_bar = LLUICtrlFactory::create<LLResizeBar>(resize_params);
+			lp->mResizeBar = resize_bar;
+			LLView::addChild(resize_bar, 0);
+		}
+	}
+	// bring all resize bars to the front so that they are clickable even over the panels
+	// with a bit of overlap
+	for (e_panel_list_t::iterator panel_it = mPanels.begin(); panel_it != mPanels.end(); ++panel_it)
 	{
-		if (max_dimp) *max_dimp = panel->mMaxDim;
+		LLResizeBar* resize_barp = (*panel_it)->mResizeBar;
+		sendChildToFront(resize_barp);
 	}
+}
 
-	return NULL != panel;
+// update layout stack animations, etc. once per frame
+// NOTE: we use this to size world view based on animating UI, *before* we draw the UI
+// we might still need to call updateLayout during UI draw phase, in case UI elements
+// are resizing themselves dynamically
+//static 
+void LLLayoutStack::updateClass()
+{
+	for (instance_iter it = beginInstances(); it != endInstances(); ++it)
+	{
+		it->updateLayout();
+	}
 }
 
-static LLFastTimer::DeclareTimer FTM_UPDATE_LAYOUT("Update LayoutStacks");
-void LLLayoutStack::updateLayout(BOOL force_resize)
+void LLLayoutStack::updateFractionalSizes()
 {
-	LLFastTimer ft(FTM_UPDATE_LAYOUT);
-	static LLUICachedControl<S32> resize_bar_overlap ("UIResizeBarOverlap", 0);
-	calcMinExtents();
-	createResizeBars();
+	F32 total_resizable_dim = 0;
+	S32 num_auto_resize_panels = 0;
 
-	// calculate current extents
-	F32 total_size = 0.f;
+	BOOST_FOREACH(LLLayoutPanel* panelp, mPanels)
+	{
+		if (panelp->mAutoResize)
+		{
+			total_resizable_dim += llmax(0, panelp->getLayoutDim() - panelp->getRelevantMinDim());
+			num_auto_resize_panels++;
+		}
+	}
 
+	F32 total_fractional_size = 0.f;
+	
+	BOOST_FOREACH(LLLayoutPanel* panelp, mPanels)
+	{
+		if (panelp->mAutoResize)
+		{
+			F32 panel_resizable_dim = llmax(MIN_FRACTIONAL_SIZE, (F32)(panelp->getLayoutDim() - panelp->getRelevantMinDim()));
+			panelp->mFractionalSize = panel_resizable_dim > 0.f 
+										? llclamp(panel_resizable_dim / total_resizable_dim, MIN_FRACTIONAL_SIZE, MAX_FRACTIONAL_SIZE)
+										: MIN_FRACTIONAL_SIZE;
+			total_fractional_size += panelp->mFractionalSize;
+			llassert(!llisnan(panelp->mFractionalSize));
+		}
+	}
+
+	if (total_fractional_size == 0.f)
+	{ // equal distribution
+		BOOST_FOREACH(LLLayoutPanel* panelp, mPanels)
+		{
+			if (panelp->mAutoResize)
+			{
+				panelp->mFractionalSize = MAX_FRACTIONAL_SIZE / (F32)num_auto_resize_panels;
+			}
+		}
+	}
+	else
+	{ // renormalize
+		BOOST_FOREACH(LLLayoutPanel* panelp, mPanels)
+		{
+			if (panelp->mAutoResize)
+			{
+				panelp->mFractionalSize /= total_fractional_size;
+			}
+		}
+	}
+}
+
+bool LLLayoutStack::animatePanels()
+{
+	bool animation_in_progress = false;
+	
 	//
 	// animate visibility
 	//
-	e_panel_list_t::iterator panel_it;
-	for (panel_it = mPanels.begin(); panel_it != mPanels.end();	++panel_it)
+	BOOST_FOREACH(LLLayoutPanel* panelp, mPanels)
 	{
-		LLLayoutPanel* panelp = (*panel_it);
-		if (panelp->getVisible()) 
+		if (panelp->getVisible())
 		{
-			if (mAnimate)
+			if (mAnimate && panelp->mVisibleAmt < 1.f)
 			{
 				if (!mAnimatedThisFrame)
 				{
@@ -345,15 +564,21 @@ void LLLayoutStack::updateLayout(BOOL force_resize)
 						panelp->mVisibleAmt = 1.f;
 					}
 				}
+				
+				animation_in_progress = true;
 			}
 			else
 			{
-				panelp->mVisibleAmt = 1.f;
+				if (panelp->mVisibleAmt != 1.f)
+				{
+					panelp->mVisibleAmt = 1.f;
+					animation_in_progress = true;
+				}
 			}
 		}
 		else // not visible
 		{
-			if (mAnimate)
+			if (mAnimate && panelp->mVisibleAmt > 0.f)
 			{
 				if (!mAnimatedThisFrame)
 				{
@@ -363,297 +588,213 @@ void LLLayoutStack::updateLayout(BOOL force_resize)
 						panelp->mVisibleAmt = 0.f;
 					}
 				}
+
+				animation_in_progress = true;
 			}
 			else
 			{
-				panelp->mVisibleAmt = 0.f;
+				if (panelp->mVisibleAmt != 0.f)
+				{
+					panelp->mVisibleAmt = 0.f;
+					animation_in_progress = true;
+				}
 			}
 		}
 
 		F32 collapse_state = panelp->mCollapsed ? 1.f : 0.f;
-		panelp->mCollapseAmt = lerp(panelp->mCollapseAmt, collapse_state, LLCriticalDamp::getInterpolant(mCloseTimeConstant));
-
-        total_size += panelp->mFractionalSize * panelp->getCollapseFactor();
-        // want n-1 panel gaps for n panels
-		if (panel_it != mPanels.begin())
-		{
-			total_size += mPanelSpacing;
-		}
-	}
-
-	S32 num_resizable_panels = 0;
-	F32 shrink_headroom_available = 0.f;
-	F32 shrink_headroom_total = 0.f;
-	for (panel_it = mPanels.begin(); panel_it != mPanels.end(); ++panel_it)
-	{
-		LLLayoutPanel* panelp = (*panel_it);
-
-		// panels that are not fully visible do not count towards shrink headroom
-		if (panelp->getCollapseFactor() < 1.f) 
-		{
-			continue;
-		}
-
-		F32 cur_size = panelp->mFractionalSize;
-		F32 min_size = (F32)panelp->getRelevantMinDim();
-		
-		// if currently resizing a panel or the panel is flagged as not automatically resizing
-		// only track total available headroom, but don't use it for automatic resize logic
-		if (panelp->mResizeBar->hasMouseCapture() 
-			|| (!panelp->mAutoResize 
-				&& !force_resize))
-		{
-			shrink_headroom_total += cur_size - min_size;
-		}
-		else
-		{
-			num_resizable_panels++;
-			
-			shrink_headroom_available += cur_size - min_size;
-			shrink_headroom_total += cur_size - min_size;
-		}
-	}
-
-	// calculate how many pixels need to be distributed among layout panels
-	// positive means panels need to grow, negative means shrink
-	F32 pixels_to_distribute = (mOrientation == HORIZONTAL)
-							? getRect().getWidth() - total_size
-							: getRect().getHeight() - total_size;
-
-	// now we distribute the pixels...
-	F32 cur_x = 0.f;
-	F32 cur_y = (F32)getRect().getHeight();
-
-	for (panel_it = mPanels.begin(); panel_it != mPanels.end(); ++panel_it)
-	{
-		LLLayoutPanel* panelp = (*panel_it);
-
-		F32 min_size = panelp->getRelevantMinDim();
-		F32 delta_size = 0.f;
-
-		// if panel can automatically resize (not animating, and resize flag set)...
-		if (panelp->getCollapseFactor() == 1.f 
-			&& (force_resize || panelp->mAutoResize) 
-			&& !panelp->mResizeBar->hasMouseCapture()) 
+		if (panelp->mCollapseAmt != collapse_state)
 		{
-			if (pixels_to_distribute < 0.f)
+			if (!mAnimatedThisFrame)
 			{
-				// shrink proportionally to amount over minimum
-				// so we can do this in one pass
-				delta_size = (shrink_headroom_available > 0.f) 
-					? pixels_to_distribute * ((F32)(panelp->mFractionalSize - min_size) / shrink_headroom_available) 
-					: 0.f;
-				shrink_headroom_available -= (panelp->mFractionalSize - min_size);
+				panelp->mCollapseAmt = lerp(panelp->mCollapseAmt, collapse_state, LLCriticalDamp::getInterpolant(mCloseTimeConstant));
 			}
-			else
+			animation_in_progress = true;
+			
+			if (llabs(panelp->mCollapseAmt - collapse_state) < 0.001f)
 			{
-				// grow all elements equally
-				delta_size = pixels_to_distribute / (F32)num_resizable_panels;
-				num_resizable_panels--;
+				panelp->mCollapseAmt = collapse_state;
 			}
-			
-			panelp->mFractionalSize = llmax(min_size, panelp->mFractionalSize + delta_size);
-			pixels_to_distribute -= delta_size;
 		}
+	}
 
-		// adjust running headroom count based on new sizes
-		shrink_headroom_total += delta_size;
+	mAnimatedThisFrame = true;
 
-		LLRect panel_rect;
-		if (mOrientation == HORIZONTAL)
-		{
-			panel_rect.setLeftTopAndSize(llround(cur_x), 
-										llround(cur_y), 
-										llround(panelp->mFractionalSize), 
-										getRect().getHeight());
-		}
-		else
-		{
-			panel_rect.setLeftTopAndSize(llround(cur_x), 
-										llround(cur_y), 
-										getRect().getWidth(), 
-										llround(panelp->mFractionalSize));
-		}
-		panelp->setShape(panel_rect);
+	return animation_in_progress;
+}
 
-		LLRect resize_bar_rect = panel_rect;
-		if (mOrientation == HORIZONTAL)
-		{
-			resize_bar_rect.mLeft = panel_rect.mRight - resize_bar_overlap;
-			resize_bar_rect.mRight = panel_rect.mRight + mPanelSpacing + resize_bar_overlap;
-		}
-		else
-		{
-			resize_bar_rect.mTop = panel_rect.mBottom + resize_bar_overlap;
-			resize_bar_rect.mBottom = panel_rect.mBottom - mPanelSpacing - resize_bar_overlap;
-		}
-		(*panel_it)->mResizeBar->setRect(resize_bar_rect);
+void LLLayoutStack::updatePanelRect( LLLayoutPanel* resized_panel, const LLRect& new_rect )
+{
+	S32 new_dim = (mOrientation == HORIZONTAL)
+					? new_rect.getWidth()
+					: new_rect.getHeight();
+	S32 delta_dim = new_dim - resized_panel->getVisibleDim();
+	if (delta_dim == 0) return;
 
-		F32 size = ((*panel_it)->mFractionalSize * (*panel_it)->getCollapseFactor()) + (F32)mPanelSpacing;
-		if (mOrientation == HORIZONTAL)
-		{
-			cur_x += size;
-		}
-		else //VERTICAL
-		{
-			cur_y -= size;
-		}
-	}
+	F32 total_visible_fraction = 0.f;
+	F32 delta_auto_resize_headroom = 0.f;
+	F32 total_auto_resize_headroom = 0.f;
 
-	// update resize bars with new limits
-	LLLayoutPanel* last_resizeable_panel = NULL;
-	for (panel_it = mPanels.begin(); panel_it != mPanels.end(); ++panel_it)
-	{
-		LLLayoutPanel* panelp = (*panel_it);
-		S32 relevant_min = panelp->getRelevantMinDim();
+	LLLayoutPanel* other_resize_panel = NULL;
+	LLLayoutPanel* following_panel = NULL;
 
-		if (mOrientation == HORIZONTAL)
+	BOOST_REVERSE_FOREACH(LLLayoutPanel* panelp, mPanels)
+	{
+		if (panelp->mAutoResize)
 		{
-			(*panel_it)->mResizeBar->setResizeLimits(
-				relevant_min, 
-				relevant_min + llround(shrink_headroom_total));
+			total_auto_resize_headroom += (F32)(panelp->mTargetDim - panelp->getRelevantMinDim());
+			total_visible_fraction += panelp->mFractionalSize * panelp->getAutoResizeFactor();
 		}
-		else //VERTICAL
+
+		if (panelp == resized_panel)
 		{
-			(*panel_it)->mResizeBar->setResizeLimits(
-				relevant_min, 
-				relevant_min + llround(shrink_headroom_total));
+			other_resize_panel = following_panel;
 		}
 
-		// toggle resize bars based on panel visibility, resizability, etc
-		BOOL resize_bar_enabled = panelp->getVisible() && (*panel_it)->mUserResize;
-		(*panel_it)->mResizeBar->setVisible(resize_bar_enabled);
-
-		if ((*panel_it)->mUserResize || (*panel_it)->mAutoResize)
+		if (panelp->getVisible() && !panelp->mCollapsed)
 		{
-			last_resizeable_panel = (*panel_it);
+			following_panel = panelp;
 		}
 	}
 
-	// hide last resize bar as there is nothing past it
-	// resize bars need to be in between two resizable panels
-	if (last_resizeable_panel)
+	if (resized_panel->mAutoResize == FALSE)
 	{
-		last_resizeable_panel->mResizeBar->setVisible(FALSE);
+		delta_auto_resize_headroom += -delta_dim;
 	}
-
-	// not enough room to fit existing contents
-	if (force_resize == FALSE
-		// layout did not complete by reaching target position
-		&& ((mOrientation == VERTICAL && llround(cur_y) != -mPanelSpacing)
-			|| (mOrientation == HORIZONTAL && llround(cur_x) != getRect().getWidth() + mPanelSpacing)))
+	if (other_resize_panel && other_resize_panel->mAutoResize == FALSE)
 	{
-		// do another layout pass with all stacked elements contributing
-		// even those that don't usually resize
-		llassert_always(force_resize == FALSE);
-		updateLayout(TRUE);
+		delta_auto_resize_headroom += delta_dim;
 	}
 
-	 mAnimatedThisFrame = true;
-} // end LLLayoutStack::updateLayout
+	F32 fraction_given_up = 0.f;
+	F32 fraction_remaining = 1.f;
+	F32 updated_auto_resize_headroom = total_auto_resize_headroom + delta_auto_resize_headroom;
 
-
-LLLayoutPanel* LLLayoutStack::findEmbeddedPanel(LLPanel* panelp) const
-{
-	if (!panelp) return NULL;
-
-	e_panel_list_t::const_iterator panel_it;
-	for (panel_it = mPanels.begin(); panel_it != mPanels.end(); ++panel_it)
+	enum
 	{
-		if ((*panel_it) == panelp)
-		{
-			return *panel_it;
-		}
-	}
-	return NULL;
-}
+		BEFORE_RESIZED_PANEL,
+		RESIZED_PANEL,
+		NEXT_PANEL,
+		AFTER_RESIZED_PANEL
+	} which_panel = BEFORE_RESIZED_PANEL;
 
-LLLayoutPanel* LLLayoutStack::findEmbeddedPanelByName(const std::string& name) const
-{
-	LLLayoutPanel* result = NULL;
-
-	for (e_panel_list_t::const_iterator panel_it = mPanels.begin(); panel_it != mPanels.end(); ++panel_it)
+	BOOST_FOREACH(LLLayoutPanel* panelp, mPanels)
 	{
-		LLLayoutPanel* p = *panel_it;
+		if (!panelp->getVisible() || panelp->mCollapsed) continue;
 
-		if (p->getName() == name)
+		if (panelp == resized_panel)
 		{
-			result = p;
-			break;
+			which_panel = RESIZED_PANEL;
 		}
-	}
-
-	return result;
-}
-
-// Compute sum of min_width or min_height of children
-void LLLayoutStack::calcMinExtents()
-{
-	mMinWidth = 0;
-	mMinHeight = 0;
 
-	e_panel_list_t::iterator panel_it;
-	for (panel_it = mPanels.begin(); panel_it != mPanels.end(); ++panel_it)
-	{
-		if (mOrientation == HORIZONTAL)
+		switch(which_panel)
 		{
-            mMinWidth += (*panel_it)->getRelevantMinDim();
-			if (panel_it != mPanels.begin())
+		case BEFORE_RESIZED_PANEL:
+			if (panelp->mAutoResize)
+			{	// freeze current size as fraction of overall auto_resize space
+				F32 fractional_adjustment_factor = total_auto_resize_headroom / updated_auto_resize_headroom;
+				F32 new_fractional_size = llclamp(panelp->mFractionalSize * fractional_adjustment_factor,
+													MIN_FRACTIONAL_SIZE,
+													MAX_FRACTIONAL_SIZE);
+				F32 fraction_delta = (new_fractional_size - panelp->mFractionalSize);
+				fraction_given_up -= fraction_delta;
+				fraction_remaining -= panelp->mFractionalSize;
+				panelp->mFractionalSize += fraction_delta;
+				llassert(!llisnan(panelp->mFractionalSize));
+			}
+			else
 			{
-				mMinWidth += mPanelSpacing;
+				// leave non auto-resize panels alone
 			}
-		}
-		else //VERTICAL
-		{
-			mMinHeight += (*panel_it)->getRelevantMinDim();
-			if (panel_it != mPanels.begin())
+			break;
+		case RESIZED_PANEL:
+			if (panelp->mAutoResize)
+			{	// freeze new size as fraction
+				F32 new_fractional_size = (updated_auto_resize_headroom == 0.f)
+					? MAX_FRACTIONAL_SIZE
+					: llclamp((F32)(new_dim - panelp->getRelevantMinDim()) / updated_auto_resize_headroom, MIN_FRACTIONAL_SIZE, MAX_FRACTIONAL_SIZE);
+				fraction_given_up -= new_fractional_size - panelp->mFractionalSize;
+				fraction_remaining -= panelp->mFractionalSize;
+				panelp->mFractionalSize = new_fractional_size;
+				llassert(!llisnan(panelp->mFractionalSize));
+			}
+			else
+			{	// freeze new size as original size
+				panelp->mTargetDim = new_dim;
+				fraction_remaining -= fraction_given_up;
+			}
+			which_panel = NEXT_PANEL;
+			break;
+		case NEXT_PANEL:
+			if (panelp->mAutoResize)
+			{
+				fraction_remaining -= panelp->mFractionalSize;
+				if (fraction_given_up != 0.f)
+				{
+					panelp->mFractionalSize = llclamp(panelp->mFractionalSize + fraction_given_up, MIN_FRACTIONAL_SIZE, MAX_FRACTIONAL_SIZE);
+					fraction_given_up = 0.f;
+				}
+				else
+				{
+					F32 new_fractional_size = llclamp((F32)(panelp->mTargetDim - panelp->getRelevantMinDim() + delta_auto_resize_headroom) 
+														/ updated_auto_resize_headroom,
+													MIN_FRACTIONAL_SIZE,
+													MAX_FRACTIONAL_SIZE);
+					fraction_given_up -= new_fractional_size - panelp->mFractionalSize;
+					panelp->mFractionalSize = new_fractional_size;
+				}
+			}
+			else
+			{
+				panelp->mTargetDim -= delta_dim;
+			}
+			which_panel = AFTER_RESIZED_PANEL;
+			break;
+		case AFTER_RESIZED_PANEL:
+			if (panelp->mAutoResize)
 			{
-				mMinHeight += mPanelSpacing;
+				panelp->mFractionalSize = llclamp(panelp->mFractionalSize + (panelp->mFractionalSize / fraction_remaining) * fraction_given_up,
+												MIN_FRACTIONAL_SIZE,
+												MAX_FRACTIONAL_SIZE);
 			}
+		default:
+			break;
 		}
 	}
 }
 
-void LLLayoutStack::createResizeBars()
+void LLLayoutStack::reshape(S32 width, S32 height, BOOL called_from_parent)
 {
-	for (e_panel_list_t::iterator panel_it = mPanels.begin(); panel_it != mPanels.end(); ++panel_it)
+	mNeedsLayout = true;
+	LLView::reshape(width, height, called_from_parent);
+}
+
+void LLLayoutStack::updateResizeBarLimits()
+{
+	LLLayoutPanel* previous_visible_panelp = NULL;
+	BOOST_REVERSE_FOREACH(LLLayoutPanel* visible_panelp, mPanels)
 	{
-		LLLayoutPanel* lp = (*panel_it);
-		if (lp->mResizeBar == NULL)
+		if (!visible_panelp->getVisible() || visible_panelp->mCollapsed)
 		{
-			LLResizeBar::Side side = (mOrientation == HORIZONTAL) ? LLResizeBar::RIGHT : LLResizeBar::BOTTOM;
-			LLRect resize_bar_rect = getRect();
-
-			LLResizeBar::Params resize_params;
-			resize_params.name("resize");
-			resize_params.resizing_view(lp);
-			resize_params.min_size(lp->getRelevantMinDim());
-			resize_params.side(side);
-			resize_params.snapping_enabled(false);
-			LLResizeBar* resize_bar = LLUICtrlFactory::create<LLResizeBar>(resize_params);
-			lp->mResizeBar = resize_bar;
-			LLView::addChild(resize_bar, 0);
+			visible_panelp->mResizeBar->setVisible(FALSE);
+			continue;
+		}
 
-			// bring all resize bars to the front so that they are clickable even over the panels
-			// with a bit of overlap
-			for (e_panel_list_t::iterator panel_it = mPanels.begin(); panel_it != mPanels.end(); ++panel_it)
-			{
-				LLResizeBar* resize_barp = (*panel_it)->mResizeBar;
-				sendChildToFront(resize_barp);
-			}
+		// toggle resize bars based on panel visibility, resizability, etc
+		if (previous_visible_panelp
+			&& (visible_panelp->mUserResize || previous_visible_panelp->mUserResize)				// one of the pair is user resizable
+			&& (visible_panelp->mAutoResize || visible_panelp->mUserResize)							// current panel is resizable
+			&& (previous_visible_panelp->mAutoResize || previous_visible_panelp->mUserResize))		// previous panel is resizable
+		{
+			visible_panelp->mResizeBar->setVisible(TRUE);
+			S32 previous_panel_headroom = previous_visible_panelp->getVisibleDim() - previous_visible_panelp->getRelevantMinDim();
+			visible_panelp->mResizeBar->setResizeLimits(visible_panelp->getRelevantMinDim(), 
+														visible_panelp->getVisibleDim() + previous_panel_headroom);
+		}
+		else
+		{
+			visible_panelp->mResizeBar->setVisible(FALSE);
 		}
-	}
-}
 
-// update layout stack animations, etc. once per frame
-// NOTE: we use this to size world view based on animating UI, *before* we draw the UI
-// we might still need to call updateLayout during UI draw phase, in case UI elements
-// are resizing themselves dynamically
-//static 
-void LLLayoutStack::updateClass()
-{
-	for (instance_iter it = beginInstances(); it != endInstances(); ++it)
-	{
-		it->updateLayout();
+		previous_visible_panelp = visible_panelp;
 	}
 }
diff --git a/indra/llui/lllayoutstack.h b/indra/llui/lllayoutstack.h
index ede6149a80..efe93f6def 100644
--- a/indra/llui/lllayoutstack.h
+++ b/indra/llui/lllayoutstack.h
@@ -5,7 +5,7 @@
  *
  * $LicenseInfo:firstyear=2001&license=viewerlgpl$
  * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
+ * Copyright (C) 2010, Linden Reshasearch, Inc.
  * 
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
@@ -60,6 +60,7 @@ public:
 								clip;
 		Optional<F32>			open_time_constant,
 								close_time_constant;
+		Optional<S32>			resize_bar_overlap;
 
 		Params();
 	};
@@ -72,12 +73,11 @@ public:
 	/*virtual*/ void removeChild(LLView*);
 	/*virtual*/ BOOL postBuild();
 	/*virtual*/ bool addChild(LLView* child, S32 tab_group = 0);
+	/*virtual*/ void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+
 
 	static LLView* fromXML(LLXMLNodePtr node, LLView *parent, LLXMLNodePtr output_node = NULL);
 
-	S32 getMinWidth() const { return mMinWidth; }
-	S32 getMinHeight() const { return mMinHeight; }
-	
 	typedef enum e_animate
 	{
 		NO_ANIMATE,
@@ -85,47 +85,24 @@ public:
 	} EAnimate;
 
 	void addPanel(LLLayoutPanel* panel, EAnimate animate = NO_ANIMATE);
-	void removePanel(LLPanel* panel);
 	void collapsePanel(LLPanel* panel, BOOL collapsed = TRUE);
 	S32 getNumPanels() { return mPanels.size(); }
-	/**
-	 * Moves panel_to_move before target_panel inside layout stack (both panels should already be there).
-	 * If move_to_front is true target_panel is ignored and panel_to_move is moved to the beginning of mPanels
-	 */
-	void movePanel(LLPanel* panel_to_move, LLPanel* target_panel, bool move_to_front = false);
-
-	void updatePanelAutoResize(const std::string& panel_name, BOOL auto_resize);
-	void setPanelUserResize(const std::string& panel_name, BOOL user_resize);
-	
-	/**
-	 * Gets minimal dimension along layout_stack axis of the specified by name panel.
-	 *
-	 * @returns true if specified by panel_name internal panel exists, false otherwise.
-	 */
-	bool getPanelMinSize(const std::string& panel_name, S32* min_dimp);
-
-	/**
-	 * Gets maximal dimension along layout_stack axis of the specified by name panel.
-	 *
-	 * @returns true if specified by panel_name internal panel exists, false otherwise.
-	 */
-	bool getPanelMaxSize(const std::string& panel_name, S32* max_dim);
-	
-	void updateLayout(BOOL force_resize = FALSE);
-	
+
+	void updateLayout();
+
 	S32 getPanelSpacing() const { return mPanelSpacing; }
-	BOOL getAnimate () const { return mAnimate; }
-	void setAnimate (BOOL animate) { mAnimate = animate; }
 	
 	static void updateClass();
 
 protected:
 	LLLayoutStack(const Params&);
 	friend class LLUICtrlFactory;
+	friend class LLLayoutPanel;
 
 private:
-	void createResizeBars();
-	void calcMinExtents();
+	void updateResizeBarLimits();
+	bool animatePanels();
+	void createResizeBar(LLLayoutPanel* panel);
 
 	const ELayoutOrientation mOrientation;
 
@@ -134,17 +111,19 @@ private:
 
 	LLLayoutPanel* findEmbeddedPanel(LLPanel* panelp) const;
 	LLLayoutPanel* findEmbeddedPanelByName(const std::string& name) const;
+	void updateFractionalSizes();
+	void updatePanelRect( LLLayoutPanel* param1, const LLRect& new_rect );
 
-	S32 mMinWidth;  // calculated by calcMinExtents
-	S32 mMinHeight;  // calculated by calcMinExtents
 	S32 mPanelSpacing;
 
 	// true if we already applied animation this frame
 	bool mAnimatedThisFrame;
 	bool mAnimate;
 	bool mClip;
-	F32 mOpenTimeConstant;
-	F32 mCloseTimeConstant;
+	F32  mOpenTimeConstant;
+	F32  mCloseTimeConstant;
+	bool mNeedsLayout;
+	S32  mResizeBarOverlap;
 }; // end class LLLayoutStack
 
 
@@ -156,8 +135,7 @@ public:
 	struct Params : public LLInitParam::Block<Params, LLPanel::Params>
 	{
 		Optional<S32>			expanded_min_dim,
-								min_dim,
-								max_dim;
+								min_dim;
 		Optional<bool>			user_resize,
 								auto_resize;
 
@@ -168,16 +146,19 @@ public:
 
 	void initFromParams(const Params& p);
 
+	void handleReshape(const LLRect& new_rect, bool by_user);
+
 	void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+	
 
-	S32 getMinDim() const { return mMinDim; }
-	void setMinDim(S32 value) { mMinDim = value; if (!mExpandedMinDimSpecified) mExpandedMinDim = value; }
+	void setVisible(BOOL visible);
 
-	S32 getMaxDim() const { return mMaxDim; }
-	void setMaxDim(S32 value) { mMaxDim = value; }
+	S32 getLayoutDim() const;
+	S32 getMinDim() const { return (mMinDim >= 0 || mAutoResize) ? llmax(0, mMinDim) : getLayoutDim(); }
+	void setMinDim(S32 value) { mMinDim = value; }
 
-	S32 getExpandedMinDim() const { return mExpandedMinDim; }
-	void setExpandedMinDim(S32 value) { mExpandedMinDim = value; mExpandedMinDimSpecified = true; }
+	S32 getExpandedMinDim() const { return mExpandedMinDim >= 0 ? mExpandedMinDim : mMinDim; }
+	void setExpandedMinDim(S32 value) { mExpandedMinDim = value; }
 	
 	S32 getRelevantMinDim() const
 	{
@@ -185,30 +166,35 @@ public:
 		
 		if (!mCollapsed)
 		{
-			min_dim = mExpandedMinDim;
+			min_dim = getExpandedMinDim();
 		}
 		
 		return min_dim;
 	}
 
-	void setOrientation(LLLayoutStack::ELayoutOrientation orientation) { mOrientation = orientation; }
+	F32 getAutoResizeFactor() const;
+	F32 getVisibleAmount() const;
+	S32 getVisibleDim() const;
+
+	void setOrientation(LLLayoutStack::ELayoutOrientation orientation);
+	void storeOriginalDim();
+
+	void setIgnoreReshape(bool ignore) { mIgnoreReshape = ignore; }
 
 protected:
 	LLLayoutPanel(const Params& p);
 	
-	F32 getCollapseFactor();
+	const bool	mAutoResize;
+	const bool	mUserResize;
 
-	bool	mExpandedMinDimSpecified;
 	S32		mExpandedMinDim;
-	
 	S32		mMinDim;
-	S32		mMaxDim;
-	bool	mAutoResize;
-	bool	mUserResize;
 	bool	mCollapsed;
 	F32		mVisibleAmt;
 	F32		mCollapseAmt;
 	F32		mFractionalSize;
+	S32		mTargetDim;
+	bool	mIgnoreReshape;
 	LLLayoutStack::ELayoutOrientation mOrientation;
 	class LLResizeBar* mResizeBar;
 };
diff --git a/indra/llui/llmenugl.cpp b/indra/llui/llmenugl.cpp
index cb237fca7c..95ecbb1c94 100644
--- a/indra/llui/llmenugl.cpp
+++ b/indra/llui/llmenugl.cpp
@@ -947,9 +947,14 @@ LLMenuItemBranchGL::LLMenuItemBranchGL(const LLMenuItemBranchGL::Params& p)
 
 LLMenuItemBranchGL::~LLMenuItemBranchGL()
 {
-	delete mBranchHandle.get();
+	if (mBranchHandle.get())
+	{
+		mBranchHandle.get()->die();
+	}
 }
 
+
+
 // virtual
 LLView* LLMenuItemBranchGL::getChildView(const std::string& name, BOOL recurse) const
 {
diff --git a/indra/llui/llpanel.h b/indra/llui/llpanel.h
index cd33938226..f620201020 100644
--- a/indra/llui/llpanel.h
+++ b/indra/llui/llpanel.h
@@ -135,6 +135,8 @@ public:
 	const LLColor4&	getBackgroundColor() const { return mBgOpaqueColor; }
 	void			setTransparentColor(const LLColor4& color) { mBgAlphaColor = color; }
 	const LLColor4& getTransparentColor() const { return mBgAlphaColor; }
+	void			setBackgroundImage(LLUIImage* image) { mBgOpaqueImage = image; }
+	void			setTransparentImage(LLUIImage* image) { mBgAlphaImage = image; }
 	LLPointer<LLUIImage> getBackgroundImage() const { return mBgOpaqueImage; }
 	LLPointer<LLUIImage> getTransparentImage() const { return mBgAlphaImage; }
 	LLColor4		getBackgroundImageOverlay() { return mBgOpaqueImageOverlay; }
diff --git a/indra/llui/llresizebar.cpp b/indra/llui/llresizebar.cpp
index 02f60c76fa..87aeb4d7a7 100644
--- a/indra/llui/llresizebar.cpp
+++ b/indra/llui/llresizebar.cpp
@@ -79,6 +79,8 @@ LLResizeBar::LLResizeBar(const LLResizeBar::Params& p)
 
 BOOL LLResizeBar::handleMouseDown(S32 x, S32 y, MASK mask)
 {
+	if (!canResize()) return FALSE;
+
 	// Route future Mouse messages here preemptively.  (Release on mouse up.)
 	// No handler needed for focus lost since this clas has no state that depends on it.
 	gFocusMgr.setMouseCapture( this );
@@ -243,7 +245,7 @@ BOOL LLResizeBar::handleHover(S32 x, S32 y, MASK mask)
 		handled = TRUE;
 	}
 
-	if( handled )
+	if( handled && canResize() )
 	{
 		switch( mSide )
 		{
diff --git a/indra/llui/llresizebar.h b/indra/llui/llresizebar.h
index 0725fbd846..6daf191918 100644
--- a/indra/llui/llresizebar.h
+++ b/indra/llui/llresizebar.h
@@ -70,6 +70,7 @@ public:
 	void			setResizeLimits( S32 min_size, S32 max_size ) { mMinSize = min_size; mMaxSize = max_size; }
 	void			setEnableSnapping(BOOL enable) { mSnappingEnabled = enable; }
 	void			setAllowDoubleClickSnapping(BOOL allow) { mAllowDoubleClickSnapping = allow; }
+	bool			canResize() { return getEnabled() && mMaxSize > mMinSize; }
 
 private:
 	S32				mDragLastScreenX;
diff --git a/indra/llui/llscrollcontainer.cpp b/indra/llui/llscrollcontainer.cpp
index fe3f688fc5..ad4cc20d9a 100644
--- a/indra/llui/llscrollcontainer.cpp
+++ b/indra/llui/llscrollcontainer.cpp
@@ -424,63 +424,66 @@ void LLScrollContainer::draw()
 		focusFirstItem();
 	}
 
-	// Draw background
-	if( mIsOpaque )
+	if (getRect().isValid()) 
 	{
-		F32 alpha = getCurrentTransparency();
+		// Draw background
+		if( mIsOpaque )
+		{
+			F32 alpha = getCurrentTransparency();
 
-		gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
-		gl_rect_2d(mInnerRect, mBackgroundColor.get() % alpha);
-	}
+			gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+			gl_rect_2d(mInnerRect, mBackgroundColor.get() % alpha);
+		}
 	
-	// Draw mScrolledViews and update scroll bars.
-	// get a scissor region ready, and draw the scrolling view. The
-	// scissor region ensures that we don't draw outside of the bounds
-	// of the rectangle.
-	if( mScrolledView )
-	{
-		updateScroll();
-
-		// Draw the scrolled area.
+		// Draw mScrolledViews and update scroll bars.
+		// get a scissor region ready, and draw the scrolling view. The
+		// scissor region ensures that we don't draw outside of the bounds
+		// of the rectangle.
+		if( mScrolledView )
 		{
-			S32 visible_width = 0;
-			S32 visible_height = 0;
-			BOOL show_v_scrollbar = FALSE;
-			BOOL show_h_scrollbar = FALSE;
-			calcVisibleSize( &visible_width, &visible_height, &show_h_scrollbar, &show_v_scrollbar );
-
-			LLLocalClipRect clip(LLRect(mInnerRect.mLeft, 
-					mInnerRect.mBottom + (show_h_scrollbar ? scrollbar_size : 0) + visible_height,
-					mInnerRect.mRight - (show_v_scrollbar ? scrollbar_size: 0),
-					mInnerRect.mBottom + (show_h_scrollbar ? scrollbar_size : 0)
-					));
-			drawChild(mScrolledView);
-		}
-	}
-
-	// Highlight border if a child of this container has keyboard focus
-	if( mBorder->getVisible() )
-	{
-		mBorder->setKeyboardFocusHighlight( gFocusMgr.childHasKeyboardFocus(this) );
-	}
+			updateScroll();
 
-	// Draw all children except mScrolledView
-	// Note: scrollbars have been adjusted by above drawing code
-	for (child_list_const_reverse_iter_t child_iter = getChildList()->rbegin();
-		 child_iter != getChildList()->rend(); ++child_iter)
-	{
-		LLView *viewp = *child_iter;
-		if( sDebugRects )
-		{
-			sDepth++;
+			// Draw the scrolled area.
+			{
+				S32 visible_width = 0;
+				S32 visible_height = 0;
+				BOOL show_v_scrollbar = FALSE;
+				BOOL show_h_scrollbar = FALSE;
+				calcVisibleSize( &visible_width, &visible_height, &show_h_scrollbar, &show_v_scrollbar );
+
+				LLLocalClipRect clip(LLRect(mInnerRect.mLeft, 
+						mInnerRect.mBottom + (show_h_scrollbar ? scrollbar_size : 0) + visible_height,
+						mInnerRect.mRight - (show_v_scrollbar ? scrollbar_size: 0),
+						mInnerRect.mBottom + (show_h_scrollbar ? scrollbar_size : 0)
+						));
+				drawChild(mScrolledView);
+			}
 		}
-		if( (viewp != mScrolledView) && viewp->getVisible() )
+
+		// Highlight border if a child of this container has keyboard focus
+		if( mBorder->getVisible() )
 		{
-			drawChild(viewp);
+			mBorder->setKeyboardFocusHighlight( gFocusMgr.childHasKeyboardFocus(this) );
 		}
-		if( sDebugRects )
+
+		// Draw all children except mScrolledView
+		// Note: scrollbars have been adjusted by above drawing code
+		for (child_list_const_reverse_iter_t child_iter = getChildList()->rbegin();
+			 child_iter != getChildList()->rend(); ++child_iter)
 		{
-			sDepth--;
+			LLView *viewp = *child_iter;
+			if( sDebugRects )
+			{
+				sDepth++;
+			}
+			if( (viewp != mScrolledView) && viewp->getVisible() )
+			{
+				drawChild(viewp);
+			}
+			if( sDebugRects )
+			{
+				sDepth--;
+			}
 		}
 	}
 } // end draw
diff --git a/indra/llui/llsdparam.cpp b/indra/llui/llsdparam.cpp
deleted file mode 100644
index 0e29873bb0..0000000000
--- a/indra/llui/llsdparam.cpp
+++ /dev/null
@@ -1,342 +0,0 @@
-/** 
- * @file llsdparam.cpp
- * @brief parameter block abstraction for creating complex objects and 
- * parsing construction parameters from xml and LLSD
- *
- * $LicenseInfo:firstyear=2008&license=viewerlgpl$
- * 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
- * $/LicenseInfo$
- */
-
-#include "linden_common.h"
-
-// Project includes
-#include "llsdparam.h"
-#include "llsdutil.h"
-
-static 	LLInitParam::Parser::parser_read_func_map_t sReadFuncs;
-static 	LLInitParam::Parser::parser_write_func_map_t sWriteFuncs;
-static 	LLInitParam::Parser::parser_inspect_func_map_t sInspectFuncs;
-static const LLSD NO_VALUE_MARKER;
-
-LLFastTimer::DeclareTimer FTM_SD_PARAM_ADAPTOR("LLSD to LLInitParam conversion");
-
-//
-// LLParamSDParser
-//
-LLParamSDParser::LLParamSDParser()
-: Parser(sReadFuncs, sWriteFuncs, sInspectFuncs)
-{
-	using boost::bind;
-
-	if (sReadFuncs.empty())
-	{
-		registerParserFuncs<LLInitParam::Flag>(readFlag, &LLParamSDParser::writeFlag);
-		registerParserFuncs<S32>(readS32, &LLParamSDParser::writeTypedValue<S32>);
-		registerParserFuncs<U32>(readU32, &LLParamSDParser::writeU32Param);
-		registerParserFuncs<F32>(readF32, &LLParamSDParser::writeTypedValue<F32>);
-		registerParserFuncs<F64>(readF64, &LLParamSDParser::writeTypedValue<F64>);
-		registerParserFuncs<bool>(readBool, &LLParamSDParser::writeTypedValue<bool>);
-		registerParserFuncs<std::string>(readString, &LLParamSDParser::writeTypedValue<std::string>);
-		registerParserFuncs<LLUUID>(readUUID, &LLParamSDParser::writeTypedValue<LLUUID>);
-		registerParserFuncs<LLDate>(readDate, &LLParamSDParser::writeTypedValue<LLDate>);
-		registerParserFuncs<LLURI>(readURI, &LLParamSDParser::writeTypedValue<LLURI>);
-		registerParserFuncs<LLSD>(readSD, &LLParamSDParser::writeTypedValue<LLSD>);
-	}
-}
-
-// special case handling of U32 due to ambiguous LLSD::assign overload
-bool LLParamSDParser::writeU32Param(LLParamSDParser::parser_t& parser, const void* val_ptr, parser_t::name_stack_t& name_stack)
-{
-	LLParamSDParser& sdparser = static_cast<LLParamSDParser&>(parser);
-	if (!sdparser.mWriteRootSD) return false;
-	
-	parser_t::name_stack_range_t range(name_stack.begin(), name_stack.end());
-	LLSD& sd_to_write = LLParamSDParserUtilities::getSDWriteNode(*sdparser.mWriteRootSD, range);
-	sd_to_write.assign((S32)*((const U32*)val_ptr));
-
-	return true;
-}
-
-bool LLParamSDParser::writeFlag(LLParamSDParser::parser_t& parser, const void* val_ptr, parser_t::name_stack_t& name_stack)
-{
-	LLParamSDParser& sdparser = static_cast<LLParamSDParser&>(parser);
-	if (!sdparser.mWriteRootSD) return false;
-
-	parser_t::name_stack_range_t range(name_stack.begin(), name_stack.end());
-	LLParamSDParserUtilities::getSDWriteNode(*sdparser.mWriteRootSD, range);
-
-	return true;
-}
-
-void LLParamSDParser::submit(LLInitParam::BaseBlock& block, const LLSD& sd, LLInitParam::Parser::name_stack_t& name_stack)
-{
-	mCurReadSD = &sd;
-	block.submitValue(name_stack, *this);
-}
-
-void LLParamSDParser::readSD(const LLSD& sd, LLInitParam::BaseBlock& block, bool silent)
-{
-	mCurReadSD = NULL;
-	mNameStack.clear();
-	setParseSilently(silent);
-
-	LLParamSDParserUtilities::readSDValues(boost::bind(&LLParamSDParser::submit, this, boost::ref(block), _1, _2), sd, mNameStack);
-	//readSDValues(sd, block);
-}
-
-void LLParamSDParser::writeSD(LLSD& sd, const LLInitParam::BaseBlock& block)
-{
-	mNameStack.clear();
-	mWriteRootSD = &sd;
-
-	name_stack_t name_stack;
-	block.serializeBlock(*this, name_stack);
-}
-
-/*virtual*/ std::string LLParamSDParser::getCurrentElementName()
-{
-	std::string full_name = "sd";
-	for (name_stack_t::iterator it = mNameStack.begin();	
-		it != mNameStack.end();
-		++it)
-	{
-		full_name += llformat("[%s]", it->first.c_str());
-	}
-
-	return full_name;
-}
-
-
-bool LLParamSDParser::readFlag(Parser& parser, void* val_ptr)
-{
-	LLParamSDParser& self = static_cast<LLParamSDParser&>(parser);
-	return self.mCurReadSD == &NO_VALUE_MARKER;
-}
-
-
-bool LLParamSDParser::readS32(Parser& parser, void* val_ptr)
-{
-	LLParamSDParser& self = static_cast<LLParamSDParser&>(parser);
-
-    *((S32*)val_ptr) = self.mCurReadSD->asInteger();
-    return true;
-}
-
-bool LLParamSDParser::readU32(Parser& parser, void* val_ptr)
-{
-	LLParamSDParser& self = static_cast<LLParamSDParser&>(parser);
-
-    *((U32*)val_ptr) = self.mCurReadSD->asInteger();
-    return true;
-}
-
-bool LLParamSDParser::readF32(Parser& parser, void* val_ptr)
-{
-	LLParamSDParser& self = static_cast<LLParamSDParser&>(parser);
-
-    *((F32*)val_ptr) = self.mCurReadSD->asReal();
-    return true;
-}
-
-bool LLParamSDParser::readF64(Parser& parser, void* val_ptr)
-{
-	LLParamSDParser& self = static_cast<LLParamSDParser&>(parser);
-
-    *((F64*)val_ptr) = self.mCurReadSD->asReal();
-    return true;
-}
-
-bool LLParamSDParser::readBool(Parser& parser, void* val_ptr)
-{
-	LLParamSDParser& self = static_cast<LLParamSDParser&>(parser);
-
-    *((bool*)val_ptr) = self.mCurReadSD->asBoolean();
-    return true;
-}
-
-bool LLParamSDParser::readString(Parser& parser, void* val_ptr)
-{
-	LLParamSDParser& self = static_cast<LLParamSDParser&>(parser);
-
-	*((std::string*)val_ptr) = self.mCurReadSD->asString();
-    return true;
-}
-
-bool LLParamSDParser::readUUID(Parser& parser, void* val_ptr)
-{
-	LLParamSDParser& self = static_cast<LLParamSDParser&>(parser);
-
-	*((LLUUID*)val_ptr) = self.mCurReadSD->asUUID();
-    return true;
-}
-
-bool LLParamSDParser::readDate(Parser& parser, void* val_ptr)
-{
-	LLParamSDParser& self = static_cast<LLParamSDParser&>(parser);
-
-	*((LLDate*)val_ptr) = self.mCurReadSD->asDate();
-    return true;
-}
-
-bool LLParamSDParser::readURI(Parser& parser, void* val_ptr)
-{
-	LLParamSDParser& self = static_cast<LLParamSDParser&>(parser);
-
-	*((LLURI*)val_ptr) = self.mCurReadSD->asURI();
-    return true;
-}
-
-bool LLParamSDParser::readSD(Parser& parser, void* val_ptr)
-{
-	LLParamSDParser& self = static_cast<LLParamSDParser&>(parser);
-
-	*((LLSD*)val_ptr) = *self.mCurReadSD;
-    return true;
-}
-
-// static
-LLSD& LLParamSDParserUtilities::getSDWriteNode(LLSD& input, LLInitParam::Parser::name_stack_range_t& name_stack_range)
-{
-	LLSD* sd_to_write = &input;
-	
-	for (LLInitParam::Parser::name_stack_t::iterator it = name_stack_range.first;
-		it != name_stack_range.second;
-		++it)
-	{
-		bool new_traversal = it->second;
-
-		LLSD* child_sd = it->first.empty() ? sd_to_write : &(*sd_to_write)[it->first];
-
-		if (child_sd->isArray())
-		{
-			if (new_traversal)
-			{
-				// write to new element at end
-				sd_to_write = &(*child_sd)[child_sd->size()];
-			}
-			else
-			{
-				// write to last of existing elements, or first element if empty
-				sd_to_write = &(*child_sd)[llmax(0, child_sd->size() - 1)];
-			}
-		}
-		else
-		{
-			if (new_traversal 
-				&& child_sd->isDefined() 
-				&& !child_sd->isArray())
-			{
-				// copy child contents into first element of an array
-				LLSD new_array = LLSD::emptyArray();
-				new_array.append(*child_sd);
-				// assign array to slot that previously held the single value
-				*child_sd = new_array;
-				// return next element in that array
-				sd_to_write = &((*child_sd)[1]);
-			}
-			else
-			{
-				sd_to_write = child_sd;
-			}
-		}
-		it->second = false;
-	}
-	
-	return *sd_to_write;
-}
-
-//static
-void LLParamSDParserUtilities::readSDValues(read_sd_cb_t cb, const LLSD& sd, LLInitParam::Parser::name_stack_t& stack)
-{
-	if (sd.isMap())
-	{
-		for (LLSD::map_const_iterator it = sd.beginMap();
-			it != sd.endMap();
-			++it)
-		{
-			stack.push_back(make_pair(it->first, true));
-			readSDValues(cb, it->second, stack);
-			stack.pop_back();
-		}
-	}
-	else if (sd.isArray())
-	{
-		for (LLSD::array_const_iterator it = sd.beginArray();
-			it != sd.endArray();
-			++it)
-		{
-			stack.back().second = true;
-			readSDValues(cb, *it, stack);
-		}
-	}
-	else if (sd.isUndefined())
-	{
-		if (!cb.empty())
-		{
-			cb(NO_VALUE_MARKER, stack);
-		}
-	}
-	else
-	{
-		if (!cb.empty())
-		{
-			cb(sd, stack);
-		}
-	}
-}
-
-//static
-void LLParamSDParserUtilities::readSDValues(read_sd_cb_t cb, const LLSD& sd)
-{
-	LLInitParam::Parser::name_stack_t stack = LLInitParam::Parser::name_stack_t();
-	readSDValues(cb, sd, stack);
-}
-namespace LLInitParam
-{
-	// LLSD specialization
-	// block param interface
-	bool ParamValue<LLSD, TypeValues<LLSD>, false>::deserializeBlock(Parser& p, Parser::name_stack_range_t name_stack, bool new_name)
-	{
-		LLSD& sd = LLParamSDParserUtilities::getSDWriteNode(mValue, name_stack);
-
-		LLSD::String string;
-
-		if (p.readValue<LLSD::String>(string))
-		{
-			sd = string;
-			return true;
-		}
-		return false;
-	}
-
-	//static
-	void ParamValue<LLSD, TypeValues<LLSD>, false>::serializeElement(Parser& p, const LLSD& sd, Parser::name_stack_t& name_stack)
-	{
-		p.writeValue<LLSD::String>(sd.asString(), name_stack);
-	}
-
-	void ParamValue<LLSD, TypeValues<LLSD>, false>::serializeBlock(Parser& p, Parser::name_stack_t& name_stack, const BaseBlock* diff_block) const
-	{
-		// read from LLSD value and serialize out to parser (which could be LLSD, XUI, etc)
-		Parser::name_stack_t stack;
-		LLParamSDParserUtilities::readSDValues(boost::bind(&serializeElement, boost::ref(p), _1, _2), mValue, stack);
-	}
-}
diff --git a/indra/llui/llsdparam.h b/indra/llui/llsdparam.h
deleted file mode 100644
index 3dfc6d020e..0000000000
--- a/indra/llui/llsdparam.h
+++ /dev/null
@@ -1,126 +0,0 @@
-/** 
- * @file llsdparam.h
- * @brief parameter block abstraction for creating complex objects and 
- * parsing construction parameters from xml and LLSD
- *
- * $LicenseInfo:firstyear=2008&license=viewerlgpl$
- * 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 LL_LLSDPARAM_H
-#define LL_LLSDPARAM_H
-
-#include "llinitparam.h"
-#include "boost/function.hpp"
-
-struct LLParamSDParserUtilities
-{
-	static LLSD& getSDWriteNode(LLSD& input, LLInitParam::Parser::name_stack_range_t& name_stack_range);
-
-	typedef boost::function<void (const LLSD&, LLInitParam::Parser::name_stack_t&)> read_sd_cb_t;
-	static void readSDValues(read_sd_cb_t cb, const LLSD& sd, LLInitParam::Parser::name_stack_t& stack);
-	static void readSDValues(read_sd_cb_t cb, const LLSD& sd);
-};
-
-class LLParamSDParser 
-:	public LLInitParam::Parser
-{
-LOG_CLASS(LLParamSDParser);
-
-typedef LLInitParam::Parser parser_t;
-
-public:
-	LLParamSDParser();
-	void readSD(const LLSD& sd, LLInitParam::BaseBlock& block, bool silent = false);
-	void writeSD(LLSD& sd, const LLInitParam::BaseBlock& block);
-
-	/*virtual*/ std::string getCurrentElementName();
-
-private:
-	void submit(LLInitParam::BaseBlock& block, const LLSD& sd, LLInitParam::Parser::name_stack_t& name_stack);
-
-	template<typename T>
-	static bool writeTypedValue(Parser& parser, const void* val_ptr, parser_t::name_stack_t& name_stack)
-	{
-		LLParamSDParser& sdparser = static_cast<LLParamSDParser&>(parser);
-		if (!sdparser.mWriteRootSD) return false;
-		
-		LLInitParam::Parser::name_stack_range_t range(name_stack.begin(), name_stack.end());
-		LLSD& sd_to_write = LLParamSDParserUtilities::getSDWriteNode(*sdparser.mWriteRootSD, range);
-
-		sd_to_write.assign(*((const T*)val_ptr));
-		return true;
-	}
-
-	static bool writeU32Param(Parser& parser, const void* value_ptr, parser_t::name_stack_t& name_stack);
-	static bool writeFlag(Parser& parser, const void* value_ptr, parser_t::name_stack_t& name_stack);
-
-	static bool readFlag(Parser& parser, void* val_ptr);
-	static bool readS32(Parser& parser, void* val_ptr);
-	static bool readU32(Parser& parser, void* val_ptr);
-	static bool readF32(Parser& parser, void* val_ptr);
-	static bool readF64(Parser& parser, void* val_ptr);
-	static bool readBool(Parser& parser, void* val_ptr);
-	static bool readString(Parser& parser, void* val_ptr);
-	static bool readUUID(Parser& parser, void* val_ptr);
-	static bool readDate(Parser& parser, void* val_ptr);
-	static bool readURI(Parser& parser, void* val_ptr);
-	static bool readSD(Parser& parser, void* val_ptr);
-
-	Parser::name_stack_t	mNameStack;
-	const LLSD*				mCurReadSD;
-	LLSD*					mWriteRootSD;
-	LLSD*					mCurWriteSD;
-};
-
-
-extern LLFastTimer::DeclareTimer FTM_SD_PARAM_ADAPTOR;
-template<typename T>
-class LLSDParamAdapter : public T
-{
-public:
-	LLSDParamAdapter() {}
-	LLSDParamAdapter(const LLSD& sd)
-	{
-		LLFastTimer _(FTM_SD_PARAM_ADAPTOR);
-		LLParamSDParser parser;
-		// don't spam for implicit parsing of LLSD, as we want to allow arbitrary freeform data and ignore most of it
-		bool parse_silently = true;
-		parser.readSD(sd, *this, parse_silently);
-	}
-
-	operator LLSD() const
-	{
-		LLParamSDParser parser;
-		LLSD sd;
-		parser.writeSD(sd, *this);
-		return sd;
-	}
-		
-	LLSDParamAdapter(const T& val)
-	: T(val)
-	{
-		T::operator=(val);
-	}
-};
-
-#endif // LL_LLSDPARAM_H
-
diff --git a/indra/llui/lltabcontainer.cpp b/indra/llui/lltabcontainer.cpp
index d5f8707381..5fc2cc350d 100644
--- a/indra/llui/lltabcontainer.cpp
+++ b/indra/llui/lltabcontainer.cpp
@@ -98,24 +98,25 @@ class LLCustomButtonIconCtrl : public LLButton
 {
 public:
 	struct Params
-	: public LLInitParam::Block<Params, LLButton::Params>
+	:	public LLInitParam::Block<Params, LLButton::Params>
 	{
 		// LEFT, RIGHT, TOP, BOTTOM paddings of LLIconCtrl in this class has same value
 		Optional<S32>					icon_ctrl_pad;
 
-		Params():
-		icon_ctrl_pad("icon_ctrl_pad", 1)
+		Params()
+		:	icon_ctrl_pad("icon_ctrl_pad", 1)
 		{}
 	};
 
 protected:
 	friend class LLUICtrlFactory;
-	LLCustomButtonIconCtrl(const Params& p):
-		LLButton(p),
+
+	LLCustomButtonIconCtrl(const Params& p)
+	:	LLButton(p),
 		mIcon(NULL),
 		mIconAlignment(LLFontGL::HCENTER),
 		mIconCtrlPad(p.icon_ctrl_pad)
-		{}
+	{}
 
 public:
 
diff --git a/indra/llui/lltextbase.cpp b/indra/llui/lltextbase.cpp
index 3b768166f1..0040be45c7 100644
--- a/indra/llui/lltextbase.cpp
+++ b/indra/llui/lltextbase.cpp
@@ -598,7 +598,7 @@ S32 LLTextBase::insertStringNoUndo(S32 pos, const LLWString &wstr, LLTextBase::s
 
 	pos = getEditableIndex(pos, true);
 
-	segment_set_t::iterator seg_iter = getSegIterContaining(pos);
+	segment_set_t::iterator seg_iter = getEditableSegIterContaining(pos);
 
 	LLTextSegmentPtr default_segment;
 
@@ -1510,8 +1510,48 @@ void LLTextBase::getSegmentAndOffset( S32 startpos, segment_set_t::iterator* seg
 	}
 }
 
+LLTextBase::segment_set_t::iterator LLTextBase::getEditableSegIterContaining(S32 index)
+{
+	segment_set_t::iterator it = getSegIterContaining(index);
+	segment_set_t::iterator orig_it = it;
+
+	if (it == mSegments.end()) return it;
+
+	if (!(*it)->canEdit() 
+		&& index == (*it)->getStart() 
+		&& it != mSegments.begin())
+	{
+		it--;
+		if ((*it)->canEdit())
+		{
+			return it;
+		}
+	}
+	return orig_it;
+}
+
+LLTextBase::segment_set_t::const_iterator LLTextBase::getEditableSegIterContaining(S32 index) const
+{
+	segment_set_t::const_iterator it = getSegIterContaining(index);
+	segment_set_t::const_iterator orig_it = it;
+	if (it == mSegments.end()) return it;
+
+	if (!(*it)->canEdit() 
+		&& index == (*it)->getStart() 
+		&& it != mSegments.begin())
+	{
+		it--;
+		if ((*it)->canEdit())
+		{
+			return it;
+		}
+	}
+	return orig_it;
+}
+
 LLTextBase::segment_set_t::iterator LLTextBase::getSegIterContaining(S32 index)
 {
+
 	static LLPointer<LLIndexSegment> index_segment = new LLIndexSegment();
 
 	if (index > getLength()) { return mSegments.end(); }
diff --git a/indra/llui/lltextbase.h b/indra/llui/lltextbase.h
index b699601908..0549141b72 100644
--- a/indra/llui/lltextbase.h
+++ b/indra/llui/lltextbase.h
@@ -461,6 +461,8 @@ protected:
 	void                			getSegmentAndOffset( S32 startpos, segment_set_t::const_iterator* seg_iter, S32* offsetp ) const;
 	void                			getSegmentAndOffset( S32 startpos, segment_set_t::iterator* seg_iter, S32* offsetp );
 	LLTextSegmentPtr    			getSegmentAtLocalPos( S32 x, S32 y, bool hit_past_end_of_line = true);
+	segment_set_t::iterator			getEditableSegIterContaining(S32 index);
+	segment_set_t::const_iterator	getEditableSegIterContaining(S32 index) const;
 	segment_set_t::iterator			getSegIterContaining(S32 index);
 	segment_set_t::const_iterator	getSegIterContaining(S32 index) const;
 	void                			clearSegments();
diff --git a/indra/llui/lltexteditor.cpp b/indra/llui/lltexteditor.cpp
index 9bd445988d..3a23ce1cac 100644
--- a/indra/llui/lltexteditor.cpp
+++ b/indra/llui/lltexteditor.cpp
@@ -2250,6 +2250,22 @@ void LLTextEditor::insertText(const std::string &new_text)
 	setEnabled( enabled );
 }
 
+void LLTextEditor::insertText(LLWString &new_text)
+{
+	BOOL enabled = getEnabled();
+	setEnabled( TRUE );
+
+	// Delete any selected characters (the insertion replaces them)
+	if( hasSelection() )
+	{
+		deleteSelection(TRUE);
+	}
+
+	setCursorPos(mCursorPos + insert( mCursorPos, new_text, FALSE, LLTextSegmentPtr() ));
+
+	setEnabled( enabled );
+}
+
 void LLTextEditor::appendWidget(const LLInlineViewSegment::Params& params, const std::string& text, bool allow_undo)
 {
 	// Save old state
@@ -2838,3 +2854,13 @@ void LLTextEditor::clear()
 	getViewModel()->setDisplay(LLWStringUtil::null);
 	clearSegments();
 }
+
+bool LLTextEditor::canLoadOrSaveToFile()
+{
+	return !mReadOnly;
+}
+
+S32 LLTextEditor::spacesPerTab()
+{
+	return SPACES_PER_TAB;
+}
diff --git a/indra/llui/lltexteditor.h b/indra/llui/lltexteditor.h
index 9e4b95003b..40821ae9fb 100644
--- a/indra/llui/lltexteditor.h
+++ b/indra/llui/lltexteditor.h
@@ -92,6 +92,8 @@ public:
 
 	void	setParseHighlights(BOOL parsing) {mParseHighlights=parsing;}
 
+	static S32		spacesPerTab();
+
 	// mousehandler overrides
 	virtual BOOL	handleMouseDown(S32 x, S32 y, MASK mask);
 	virtual BOOL	handleMouseUp(S32 x, S32 y, MASK mask);
@@ -140,6 +142,8 @@ public:
 	virtual void	selectAll();
 	virtual BOOL	canSelectAll()	const;
 
+	virtual bool	canLoadOrSaveToFile();
+
 	void			selectNext(const std::string& search_text_in, BOOL case_insensitive, BOOL wrap = TRUE);
 	BOOL			replaceText(const std::string& search_text, const std::string& replace_text, BOOL case_insensitive, BOOL wrap = TRUE);
 	void			replaceTextAll(const std::string& search_text, const std::string& replace_text, BOOL case_insensitive);
@@ -158,6 +162,7 @@ public:
 
 	// inserts text at cursor
 	void			insertText(const std::string &text);
+	void			insertText(LLWString &text);
 
 	void			appendWidget(const LLInlineViewSegment::Params& params, const std::string& text, bool allow_undo);
 	// Non-undoable
diff --git a/indra/llui/lltoolbar.cpp b/indra/llui/lltoolbar.cpp
index 7f96c1373c..9b31a6449d 100644
--- a/indra/llui/lltoolbar.cpp
+++ b/indra/llui/lltoolbar.cpp
@@ -151,14 +151,20 @@ void LLToolBar::createContextMenu()
 		if (menu)
 		{
 			menu->setBackgroundColor(LLUIColorTable::instance().getColor("MenuPopupBgColor"));
-
 			mPopupMenuHandle = menu->getHandle();
+			mRemoveButtonHandle = menu->getChild<LLView>("Remove button")->getHandle();
 		}
 		else
 		{
 			llwarns << "Unable to load toolbars context menu." << llendl;
 		}
 	}
+	
+	if (mRemoveButtonHandle.get())
+	{
+		// Disable/Enable the "Remove button" menu item depending on whether or not a button was clicked
+		mRemoveButtonHandle.get()->setEnabled(mRightMouseTargetButton != NULL);
+	}
 }
 
 void LLToolBar::initFromParams(const LLToolBar::Params& p)
@@ -401,6 +407,7 @@ BOOL LLToolBar::handleRightMouseDown(S32 x, S32 y, MASK mask)
 	{
 		// Determine which button the mouse was over during the click in case the context menu action
 		// is intended to affect the button.
+		mRightMouseTargetButton = NULL;
 		BOOST_FOREACH(LLToolBarButton* button, mButtons)
 		{
 			LLRect button_rect;
diff --git a/indra/llui/lltoolbar.h b/indra/llui/lltoolbar.h
index 51fe23ddd1..a50c60282c 100644
--- a/indra/llui/lltoolbar.h
+++ b/indra/llui/lltoolbar.h
@@ -271,6 +271,7 @@ private:
 	LLLayoutStack*					mCenteringStack;
 	LLPanel*						mButtonPanel;
 	LLHandle<class LLContextMenu>	mPopupMenuHandle;
+	LLHandle<class LLView>			mRemoveButtonHandle;
 
 	LLToolBarButton*				mRightMouseTargetButton;
 
diff --git a/indra/llui/lltrans.cpp b/indra/llui/lltrans.cpp
new file mode 100644
index 0000000000..5388069c24
--- /dev/null
+++ b/indra/llui/lltrans.cpp
@@ -0,0 +1,295 @@
+/**
+ * @file lltrans.cpp
+ * @brief LLTrans implementation
+ *
+ * $LicenseInfo:firstyear=2000&license=viewerlgpl$
+ * 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
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "lltrans.h"
+
+#include "llfasttimer.h"	// for call count statistics
+#include "llxuiparser.h"
+#include "llsd.h"
+#include "llxmlnode.h"
+
+#include <map>
+
+LLTrans::template_map_t LLTrans::sStringTemplates;
+LLStringUtil::format_map_t LLTrans::sDefaultArgs;
+
+struct StringDef : public LLInitParam::Block<StringDef>
+{
+	Mandatory<std::string> name;
+	Mandatory<std::string> value;
+
+	StringDef()
+	:	name("name"),
+		value("value")
+	{}
+};
+
+struct StringTable : public LLInitParam::Block<StringTable>
+{
+	Multiple<StringDef> strings;
+	StringTable()
+	:	strings("string")
+	{}
+};
+
+//static 
+bool LLTrans::parseStrings(LLXMLNodePtr &root, const std::set<std::string>& default_args)
+{
+	std::string xml_filename = "(strings file)";
+	if (!root->hasName("strings"))
+	{
+		llerrs << "Invalid root node name in " << xml_filename 
+			<< ": was " << root->getName() << ", expected \"strings\"" << llendl;
+	}
+
+	StringTable string_table;
+	LLXUIParser parser;
+	parser.readXUI(root, string_table, xml_filename);
+
+	if (!string_table.validateBlock())
+	{
+		llerrs << "Problem reading strings: " << xml_filename << llendl;
+		return false;
+	}
+	
+	sStringTemplates.clear();
+	sDefaultArgs.clear();
+	
+	for(LLInitParam::ParamIterator<StringDef>::const_iterator it = string_table.strings.begin();
+		it != string_table.strings.end();
+		++it)
+	{
+		LLTransTemplate xml_template(it->name, it->value);
+		sStringTemplates[xml_template.mName] = xml_template;
+		
+		std::set<std::string>::const_iterator iter = default_args.find(xml_template.mName);
+		if (iter != default_args.end())
+		{
+			std::string name = *iter;
+			if (name[0] != '[')
+				name = llformat("[%s]",name.c_str());
+			sDefaultArgs[name] = xml_template.mText;
+		}
+	}
+
+	return true;
+}
+
+
+//static
+bool LLTrans::parseLanguageStrings(LLXMLNodePtr &root)
+{
+	std::string xml_filename = "(language strings file)";
+	if (!root->hasName("strings"))
+	{
+		llerrs << "Invalid root node name in " << xml_filename 
+		<< ": was " << root->getName() << ", expected \"strings\"" << llendl;
+	}
+	
+	StringTable string_table;
+	LLXUIParser parser;
+	parser.readXUI(root, string_table, xml_filename);
+	
+	if (!string_table.validateBlock())
+	{
+		llerrs << "Problem reading strings: " << xml_filename << llendl;
+		return false;
+	}
+		
+	for(LLInitParam::ParamIterator<StringDef>::const_iterator it = string_table.strings.begin();
+		it != string_table.strings.end();
+		++it)
+	{
+		// share the same map with parseStrings() so we can search the strings using the same getString() function.- angela
+		LLTransTemplate xml_template(it->name, it->value);
+		sStringTemplates[xml_template.mName] = xml_template;
+	}
+	
+	return true;
+}
+
+
+
+static LLFastTimer::DeclareTimer FTM_GET_TRANS("Translate string");
+
+//static 
+std::string LLTrans::getString(const std::string &xml_desc, const LLStringUtil::format_map_t& msg_args)
+{
+	// Don't care about time as much as call count.  Make sure we're not
+	// calling LLTrans::getString() in an inner loop. JC
+	LLFastTimer timer(FTM_GET_TRANS);
+	
+	template_map_t::iterator iter = sStringTemplates.find(xml_desc);
+	if (iter != sStringTemplates.end())
+	{
+		std::string text = iter->second.mText;
+		LLStringUtil::format_map_t args = sDefaultArgs;
+		args.insert(msg_args.begin(), msg_args.end());
+		LLStringUtil::format(text, args);
+		
+		return text;
+	}
+	else
+	{
+		LL_WARNS_ONCE("configuration") << "Missing String in strings.xml: [" << xml_desc << "]" << LL_ENDL;
+		return "MissingString("+xml_desc+")";
+	}
+}
+
+//static
+std::string LLTrans::getString(const std::string &xml_desc, const LLSD& msg_args)
+{
+	// Don't care about time as much as call count.  Make sure we're not
+	// calling LLTrans::getString() in an inner loop. JC
+	LLFastTimer timer(FTM_GET_TRANS);
+
+	template_map_t::iterator iter = sStringTemplates.find(xml_desc);
+	if (iter != sStringTemplates.end())
+	{
+		std::string text = iter->second.mText;
+		LLStringUtil::format(text, msg_args);
+		return text;
+	}
+	else
+	{
+		LL_WARNS_ONCE("configuration") << "Missing String in strings.xml: [" << xml_desc << "]" << LL_ENDL;
+		return "MissingString("+xml_desc+")";
+	}
+}
+
+//static 
+bool LLTrans::findString(std::string &result, const std::string &xml_desc, const LLStringUtil::format_map_t& msg_args)
+{
+	LLFastTimer timer(FTM_GET_TRANS);
+	
+	template_map_t::iterator iter = sStringTemplates.find(xml_desc);
+	if (iter != sStringTemplates.end())
+	{
+		std::string text = iter->second.mText;
+		LLStringUtil::format_map_t args = sDefaultArgs;
+		args.insert(msg_args.begin(), msg_args.end());
+		LLStringUtil::format(text, args);
+		result = text;
+		return true;
+	}
+	else
+	{
+		LL_WARNS_ONCE("configuration") << "Missing String in strings.xml: [" << xml_desc << "]" << LL_ENDL;	
+		return false;
+	}
+}
+
+//static
+bool LLTrans::findString(std::string &result, const std::string &xml_desc, const LLSD& msg_args)
+{
+	LLFastTimer timer(FTM_GET_TRANS);
+
+	template_map_t::iterator iter = sStringTemplates.find(xml_desc);
+	if (iter != sStringTemplates.end())
+	{
+		std::string text = iter->second.mText;
+		LLStringUtil::format(text, msg_args);
+		result = text;
+		return true;
+	}
+	else
+	{
+		LL_WARNS_ONCE("configuration") << "Missing String in strings.xml: [" << xml_desc << "]" << LL_ENDL;	
+		return false;
+	}
+}
+
+//static
+std::string LLTrans::getCountString(const std::string& language, const std::string& xml_desc, S32 count)
+{
+	// Compute which string identifier to use
+	const char* form = "";
+	if (language == "ru") // Russian
+	{
+		// From GNU ngettext()
+		// Plural-Forms: nplurals=3; plural=n%10==1 && n%100!=11 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2;
+		if (count % 10 == 1
+			&& count % 100 != 11)
+		{
+			// singular, "1 item"
+			form = "A";
+		}
+		else if (count % 10 >= 2
+			&& count % 10 <= 4
+			&& (count % 100 < 10 || count % 100 >= 20) )
+		{
+			// special case "2 items", "23 items", but not "13 items"
+			form = "B";
+		}
+		else
+		{
+			// English-style plural, "5 items"
+			form = "C";
+		}
+	}
+	else if (language == "fr" || language == "pt") // French, Brazilian Portuguese
+	{
+		// French and Portuguese treat zero as a singular "0 item" not "0 items"
+		if (count == 0 || count == 1)
+		{
+			form = "A";
+		}
+		else
+		{
+			// English-style plural
+			form = "B";
+		}
+	}
+	else // default
+	{
+		// languages like English with 2 forms, singular and plural
+		if (count == 1)
+		{
+			// "1 item"
+			form = "A";
+		}
+		else
+		{
+			// "2 items", also use plural for "0 items"
+			form = "B";
+		}
+	}
+
+	// Translate that string
+	LLStringUtil::format_map_t args;
+	args["[COUNT]"] = llformat("%d", count);
+
+	// Look up "AgeYearsB" or "AgeWeeksC" including the "form"
+	std::string key = llformat("%s%s", xml_desc.c_str(), form);
+	return getString(key, args);
+}
+
+void LLTrans::setDefaultArg(const std::string& name, const std::string& value)
+{
+	sDefaultArgs[name] = value;
+}
diff --git a/indra/llui/lltrans.h b/indra/llui/lltrans.h
new file mode 100644
index 0000000000..128b51d383
--- /dev/null
+++ b/indra/llui/lltrans.h
@@ -0,0 +1,133 @@
+/**
+ * @file lltrans.h
+ * @brief LLTrans definition
+ *
+ * $LicenseInfo:firstyear=2000&license=viewerlgpl$
+ * 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 LL_TRANS_H
+#define LL_TRANS_H
+
+#include <map>
+
+#include "llpointer.h"
+#include "llstring.h"
+
+class LLXMLNode;
+
+class LLSD;
+
+/**
+ * @brief String template loaded from strings.xml
+ */
+class LLTransTemplate
+{
+public:
+	LLTransTemplate(const std::string& name = LLStringUtil::null, const std::string& text = LLStringUtil::null) : mName(name), mText(text) {}
+
+	std::string mName;
+	std::string mText;
+};
+
+/**
+ * @brief Localized strings class
+ * This class is used to retrieve translations of strings used to build larger ones, as well as
+ * strings with a general usage that don't belong to any specific floater. For example,
+ * "Owner:", "Retrieving..." used in the place of a not yet known name, etc.
+ */
+class LLTrans
+{
+public:
+	LLTrans();
+
+	/**
+	 * @brief Parses the xml root that holds the strings. Used once on startup
+// *FIXME	 * @param xml_filename Filename to parse
+	 * @param default_args Set of strings (expected to be in the file) to use as default replacement args, e.g. "SECOND_LIFE"
+	 * @returns true if the file was parsed successfully, true if something went wrong
+	 */
+	static bool parseStrings(LLPointer<LLXMLNode> & root, const std::set<std::string>& default_args);
+
+	static bool parseLanguageStrings(LLPointer<LLXMLNode> & root);
+
+	/**
+	 * @brief Returns a translated string
+	 * @param xml_desc String's description
+	 * @param args A list of substrings to replace in the string
+	 * @returns Translated string
+	 */
+	static std::string getString(const std::string &xml_desc, const LLStringUtil::format_map_t& args);
+	static std::string getString(const std::string &xml_desc, const LLSD& args);
+	static bool findString(std::string &result, const std::string &xml_desc, const LLStringUtil::format_map_t& args);
+	static bool findString(std::string &result, const std::string &xml_desc, const LLSD& args);
+
+	// Returns translated string with [COUNT] replaced with a number, following
+	// special per-language logic for plural nouns.  For example, some languages
+	// may have different plurals for 0, 1, 2 and > 2.
+	// See "AgeWeeksA", "AgeWeeksB", etc. in strings.xml for examples.
+	static std::string getCountString(const std::string& language, const std::string& xml_desc, S32 count);
+
+	/**
+	 * @brief Returns a translated string
+	 * @param xml_desc String's description
+	 * @returns Translated string
+	 */
+	static std::string getString(const std::string &xml_desc)
+	{
+		LLStringUtil::format_map_t empty;
+		return getString(xml_desc, empty);
+	}
+
+	static bool findString(std::string &result, const std::string &xml_desc)
+	{
+		LLStringUtil::format_map_t empty;
+		return findString(result, xml_desc, empty);
+	}
+
+	static std::string getKeyboardString(const char* keystring)
+	{
+		std::string key_str(keystring);
+		std::string trans_str;
+		return findString(trans_str, key_str) ? trans_str : key_str; 
+	}
+
+	// get the default args
+	static const LLStringUtil::format_map_t& getDefaultArgs()
+	{
+		return sDefaultArgs;
+	}
+
+	static void setDefaultArg(const std::string& name, const std::string& value);
+
+	// insert default args into an arg list
+	static void getArgs(LLStringUtil::format_map_t& args)
+	{
+		args.insert(sDefaultArgs.begin(), sDefaultArgs.end());
+	}
+	
+private:
+	typedef std::map<std::string, LLTransTemplate > template_map_t;
+	static template_map_t sStringTemplates;
+	static LLStringUtil::format_map_t sDefaultArgs;
+};
+
+#endif
diff --git a/indra/llui/lluicolor.cpp b/indra/llui/lluicolor.cpp
new file mode 100644
index 0000000000..f9bb80f8c5
--- /dev/null
+++ b/indra/llui/lluicolor.cpp
@@ -0,0 +1,87 @@
+/** 
+ * @file lluicolor.cpp
+ * @brief brief LLUIColor class implementation file
+ *
+ * $LicenseInfo:firstyear=2009&license=viewerlgpl$
+ * 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
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "lluicolor.h"
+
+LLUIColor::LLUIColor()
+	:mColorPtr(NULL)
+{
+}
+
+
+LLUIColor::LLUIColor(const LLColor4& color)
+:	mColor(color), 
+	mColorPtr(NULL)
+{
+}
+
+LLUIColor::LLUIColor(const LLUIColor* color)
+:	mColorPtr(color)
+{
+}
+
+void LLUIColor::set(const LLColor4& color)
+{
+	mColor = color;
+	mColorPtr = NULL;
+}
+
+void LLUIColor::set(const LLUIColor* color)
+{
+	mColorPtr = color;
+}
+
+const LLColor4& LLUIColor::get() const
+{
+	return (mColorPtr == NULL ? mColor : mColorPtr->get());
+}
+
+LLUIColor::operator const LLColor4& () const
+{
+	return get();
+}
+
+const LLColor4& LLUIColor::operator()() const
+{
+	return get();
+}
+
+bool LLUIColor::isReference() const
+{
+	return mColorPtr != NULL;
+}
+
+namespace LLInitParam
+{
+	// used to detect equivalence with default values on export
+	bool ParamCompare<LLUIColor, false>::equals(const LLUIColor &a, const LLUIColor &b)
+	{
+		// do not detect value equivalence, treat pointers to colors as distinct from color values
+		return (a.mColorPtr == NULL && b.mColorPtr == NULL ? a.mColor == b.mColor : a.mColorPtr == b.mColorPtr);
+	}
+}
diff --git a/indra/llui/lluicolor.h b/indra/llui/lluicolor.h
new file mode 100644
index 0000000000..97ebea854a
--- /dev/null
+++ b/indra/llui/lluicolor.h
@@ -0,0 +1,71 @@
+/** 
+ * @file lluicolor.h
+ * @brief brief LLUIColor class header file
+ *
+ * $LicenseInfo:firstyear=2009&license=viewerlgpl$
+ * 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 LL_LLUICOLOR_H_
+#define LL_LLUICOLOR_H_
+
+#include "v4color.h"
+
+namespace LLInitParam
+{
+	template<typename T, bool>
+	struct ParamCompare;
+}
+
+class LLUIColor
+{
+public:
+	LLUIColor();
+	LLUIColor(const LLColor4& color);
+	LLUIColor(const LLUIColor* color);
+
+	void set(const LLColor4& color);
+	void set(const LLUIColor* color);
+
+	const LLColor4& get() const;
+
+	operator const LLColor4& () const;
+	const LLColor4& operator()() const;
+
+	bool isReference() const;
+
+private:
+	friend struct LLInitParam::ParamCompare<LLUIColor, false>;
+
+	const LLUIColor* mColorPtr;
+	LLColor4 mColor;
+};
+
+namespace LLInitParam
+{
+	template<>
+	struct ParamCompare<LLUIColor, false>
+	{
+		static bool equals(const LLUIColor& a, const LLUIColor& b);
+	};
+}
+
+#endif
diff --git a/indra/llui/llview.cpp b/indra/llui/llview.cpp
index 486babb0ab..e1ee0a5b14 100644
--- a/indra/llui/llview.cpp
+++ b/indra/llui/llview.cpp
@@ -121,6 +121,7 @@ LLView::Params::Params()
 
 LLView::LLView(const LLView::Params& p)
 :	mVisible(p.visible),
+	mInDraw(false),
 	mName(p.name),
 	mParentView(NULL),
 	mReshapeFlags(FOLLOWS_NONE),
@@ -333,6 +334,8 @@ void LLView::removeChild(LLView* child)
 	//llassert_always(sDepth == 0); // Avoid re-ordering while drawing; it can cause subtle iterator bugs
 	if (child->mParentView == this) 
 	{
+		// if we are removing an item we are currently iterating over, that would be bad
+		llassert(child->mInDraw == false);
 		mChildList.remove( child );
 		child->mParentView = NULL;
 		if (child->isCtrl())
@@ -1090,6 +1093,11 @@ void LLView::drawChildren()
 		{
 			child_list_reverse_iter_t child = child_iter++;
 			LLView *viewp = *child;
+			
+			if (viewp == NULL)
+			{
+				continue;
+			}
 
 			if (viewp->getVisible() && viewp->getRect().isValid())
 			{
@@ -1099,7 +1107,10 @@ void LLView::drawChildren()
 					LLUI::pushMatrix();
 					{
 						LLUI::translate((F32)viewp->getRect().mLeft, (F32)viewp->getRect().mBottom, 0.f);
+						// flag the fact we are in draw here, in case overridden draw() method attempts to remove this widget
+						viewp->mInDraw = true;
 						viewp->draw();
+						viewp->mInDraw = false;
 
 						if (sDebugRects)
 						{
diff --git a/indra/llui/llview.h b/indra/llui/llview.h
index f21fb37e18..f1fac5f69c 100644
--- a/indra/llui/llview.h
+++ b/indra/llui/llview.h
@@ -612,6 +612,8 @@ private:
 
 	S32			mNextInsertionOrdinal;
 
+	bool		mInDraw;
+
 	static LLWindow* sWindow;	// All root views must know about their window.
 
 	typedef std::map<std::string, LLView*> default_widget_map_t;
diff --git a/indra/llui/llwindowshade.cpp b/indra/llui/llwindowshade.cpp
index cf76202215..f5c463c961 100644
--- a/indra/llui/llwindowshade.cpp
+++ b/indra/llui/llwindowshade.cpp
@@ -37,10 +37,13 @@
 const S32 MIN_NOTIFICATION_AREA_HEIGHT = 30;
 const S32 MAX_NOTIFICATION_AREA_HEIGHT = 100;
 
+static LLDefaultChildRegistry::Register<LLWindowShade> r("window_shade");
+
 LLWindowShade::Params::Params()
 :	bg_image("bg_image"),
 	modal("modal", false),
 	text_color("text_color"),
+	shade_color("shade_color"),
 	can_close("can_close", true)
 {
 	changeDefault(mouse_opaque, false);
@@ -48,7 +51,6 @@ LLWindowShade::Params::Params()
 
 LLWindowShade::LLWindowShade(const LLWindowShade::Params& params)
 :	LLUICtrl(params),
-	mNotification(params.notification),
 	mModal(params.modal),
 	mFormHeight(0),
 	mTextColor(params.text_color)
@@ -72,7 +74,7 @@ void LLWindowShade::initFromParams(const LLWindowShade::Params& params)
 	addChild(stackp);
 
 	LLLayoutPanel::Params panel_p;
-	panel_p.rect = LLRect(0, 30, 800, 0);
+	panel_p.rect = LLRect(0, MIN_NOTIFICATION_AREA_HEIGHT, 800, 0);
 	panel_p.name = "notification_area";
 	panel_p.visible = false;
 	panel_p.user_resize = false;
@@ -89,7 +91,7 @@ void LLWindowShade::initFromParams(const LLWindowShade::Params& params)
 	panel_p.name = "background_area";
 	panel_p.mouse_opaque = false;
 	panel_p.background_visible = false;
-	panel_p.bg_alpha_color = LLColor4(0.f, 0.f, 0.f, 0.2f);
+	panel_p.bg_alpha_color = params.shade_color;
 	LLLayoutPanel* dummy_panel = LLUICtrlFactory::create<LLLayoutPanel>(panel_p);
 	stackp->addChild(dummy_panel);
 
@@ -107,11 +109,11 @@ void LLWindowShade::initFromParams(const LLWindowShade::Params& params)
 
 	LLIconCtrl::Params icon_p;
 	icon_p.name = "notification_icon";
-	icon_p.rect = LLRect(5, 23, 21, 8);
+	icon_p.rect = LLRect(5, 25, 21, 10);
 	panel->addChild(LLUICtrlFactory::create<LLIconCtrl>(icon_p));
 
 	LLTextBox::Params text_p;
-	text_p.rect = LLRect(31, 20, panel->getRect().getWidth() - 5, 0);
+	text_p.rect = LLRect(31, 23, panel->getRect().getWidth() - 5, 3);
 	text_p.follows.flags = FOLLOWS_ALL;
 	text_p.text_color = mTextColor;
 	text_p.font = LLFontGL::getFontSansSerifSmall();
@@ -125,41 +127,132 @@ void LLWindowShade::initFromParams(const LLWindowShade::Params& params)
 	panel_p.auto_resize = false;
 	panel_p.user_resize = false;
 	panel_p.name="form_elements";
-	panel_p.rect = LLRect(0, 30, 130, 0);
+	panel_p.rect = LLRect(0, MIN_NOTIFICATION_AREA_HEIGHT, 130, 0);
 	LLLayoutPanel* form_elements_panel = LLUICtrlFactory::create<LLLayoutPanel>(panel_p);
 	stackp->addChild(form_elements_panel);
 
-	if (params.can_close)
+	panel_p = LLUICtrlFactory::getDefaultParams<LLLayoutPanel>();
+	panel_p.auto_resize = false;
+	panel_p.user_resize = false;
+	panel_p.rect = LLRect(0, MIN_NOTIFICATION_AREA_HEIGHT, 25, 0);
+	panel_p.name = "close_panel";
+	LLLayoutPanel* close_panel = LLUICtrlFactory::create<LLLayoutPanel>(panel_p);
+	stackp->addChild(close_panel);
+
+	LLButton::Params button_p;
+	button_p.name = "close_notification";
+	button_p.rect = LLRect(5, 23, 21, 7);
+	button_p.image_color.control="DkGray_66";
+	button_p.image_unselected.name="Icon_Close_Foreground";
+	button_p.image_selected.name="Icon_Close_Press";
+	button_p.click_callback.function = boost::bind(&LLWindowShade::onCloseNotification, this);
+
+	close_panel->addChild(LLUICtrlFactory::create<LLButton>(button_p));
+	
+	close_panel->setVisible(params.can_close);
+}
+
+void LLWindowShade::draw()
+{
+	LLRect message_rect = getChild<LLTextBox>("notification_text")->getTextBoundingRect();
+
+	LLLayoutPanel* notification_area = getChild<LLLayoutPanel>("notification_area");
+
+	notification_area->reshape(notification_area->getRect().getWidth(), 
+		llclamp(message_rect.getHeight() + 15, 
+				llmax(mFormHeight, MIN_NOTIFICATION_AREA_HEIGHT),
+				MAX_NOTIFICATION_AREA_HEIGHT));
+
+	LLUICtrl::draw();
+
+	while(!mNotifications.empty() && !mNotifications.back()->isActive())
+	{
+		mNotifications.pop_back();
+		// go ahead and hide 
+		hide();
+	}
+
+	if (mNotifications.empty())
+	{
+		hide();
+	}
+	else if (notification_area->getVisibleAmount() < 0.01f)
+	{
+		displayLatestNotification();
+	}
+
+	if (!notification_area->getVisible() && (notification_area->getVisibleAmount() < 0.001f))
 	{
-		panel_p = LLUICtrlFactory::getDefaultParams<LLLayoutPanel>();
-		panel_p.auto_resize = false;
-		panel_p.user_resize = false;
-		panel_p.rect = LLRect(0, 30, 25, 0);
-		LLLayoutPanel* close_panel = LLUICtrlFactory::create<LLLayoutPanel>(panel_p);
-		stackp->addChild(close_panel);
-
-		LLButton::Params button_p;
-		button_p.name = "close_notification";
-		button_p.rect = LLRect(5, 23, 21, 7);
-		button_p.image_color.control="DkGray_66";
-		button_p.image_unselected.name="Icon_Close_Foreground";
-		button_p.image_selected.name="Icon_Close_Press";
-		button_p.click_callback.function = boost::bind(&LLWindowShade::onCloseNotification, this);
-
-		close_panel->addChild(LLUICtrlFactory::create<LLButton>(button_p));
+		getChildRef<LLLayoutPanel>("background_area").setBackgroundVisible(false);
+		setMouseOpaque(false);
 	}
+}
+
+void LLWindowShade::hide()
+{
+	getChildRef<LLLayoutPanel>("notification_area").setVisible(false);
+}
+
+void LLWindowShade::onCloseNotification()
+{
+	if (!mNotifications.empty())
+		LLNotifications::instance().cancel(mNotifications.back());
+}
+
+void LLWindowShade::onClickIgnore(LLUICtrl* ctrl)
+{
+	LLNotificationPtr notify = getCurrentNotification();
+	if (!notify) return;
+
+	bool check = ctrl->getValue().asBoolean();
+	if (notify->getForm()->getIgnoreType() == LLNotificationForm::IGNORE_SHOW_AGAIN)
+	{
+		// question was "show again" so invert value to get "ignore"
+		check = !check;
+	}
+	notify->setIgnored(check);
+}
+
+void LLWindowShade::onClickNotificationButton(const std::string& name)
+{
+	LLNotificationPtr notify = getCurrentNotification();
+	if (!notify) return;
 
-	LLSD payload = mNotification->getPayload();
+	mNotificationResponse[name] = true;
+
+	notify->respond(mNotificationResponse);
+}
 
-	LLNotificationFormPtr formp = mNotification->getForm();
+void LLWindowShade::onEnterNotificationText(LLUICtrl* ctrl, const std::string& name)
+{
+	mNotificationResponse[name] = ctrl->getValue().asString();
+}
+
+void LLWindowShade::show(LLNotificationPtr notification)
+{
+	mNotifications.push_back(notification);
+
+	displayLatestNotification();
+}
+
+void LLWindowShade::displayLatestNotification()
+{
+	if (mNotifications.empty()) return;
+
+	LLNotificationPtr notification = mNotifications.back();
+
+	LLSD payload = notification->getPayload();
+
+	LLNotificationFormPtr formp = notification->getForm();
 	LLLayoutPanel& notification_area = getChildRef<LLLayoutPanel>("notification_area");
-	notification_area.getChild<LLUICtrl>("notification_icon")->setValue(mNotification->getIcon());
-	notification_area.getChild<LLUICtrl>("notification_text")->setValue(mNotification->getMessage());
-	notification_area.getChild<LLUICtrl>("notification_text")->setToolTip(mNotification->getMessage());
+	notification_area.getChild<LLUICtrl>("notification_icon")->setValue(notification->getIcon());
+	notification_area.getChild<LLUICtrl>("notification_text")->setValue(notification->getMessage());
+	notification_area.getChild<LLUICtrl>("notification_text")->setToolTip(notification->getMessage());
 
 	LLNotificationForm::EIgnoreType ignore_type = formp->getIgnoreType(); 
 	LLLayoutPanel& form_elements = notification_area.getChildRef<LLLayoutPanel>("form_elements");
 	form_elements.deleteAllChildren();
+	form_elements.reshape(form_elements.getRect().getWidth(), MIN_NOTIFICATION_AREA_HEIGHT);
 
 	const S32 FORM_PADDING_HORIZONTAL = 10;
 	const S32 FORM_PADDING_VERTICAL = 3;
@@ -229,7 +322,7 @@ void LLWindowShade::initFromParams(const LLWindowShade::Params& params)
 			label_p.v_pad = 5;
 			LLTextBox* textbox = LLUICtrlFactory::create<LLTextBox>(label_p);
 			textbox->reshapeToFitText();
-			textbox->reshape(textbox->getRect().getWidth(), form_elements.getRect().getHeight() - 2 * FORM_PADDING_VERTICAL); 
+			textbox->reshape(textbox->getRect().getWidth(), MIN_NOTIFICATION_AREA_HEIGHT - 2 * FORM_PADDING_VERTICAL); 
 			form_elements.addChild(textbox);
 			cur_x = textbox->getRect().mRight + FORM_PADDING_HORIZONTAL;
 
@@ -249,7 +342,7 @@ void LLWindowShade::initFromParams(const LLWindowShade::Params& params)
 		}
 	}
 
-	mFormHeight = form_elements.getRect().getHeight() - (cur_y - FORM_PADDING_VERTICAL) + WIDGET_HEIGHT;
+	mFormHeight = form_elements.getRect().getHeight() - (cur_y - WIDGET_HEIGHT - FORM_PADDING_VERTICAL);
 	form_elements.reshape(form_width, mFormHeight);
 	form_elements.setMinDim(form_width);
 
@@ -261,68 +354,39 @@ void LLWindowShade::initFromParams(const LLWindowShade::Params& params)
 	{
 		(*it)->translate(0, delta_y);
 	}
-}
 
-void LLWindowShade::show()
-{
 	getChildRef<LLLayoutPanel>("notification_area").setVisible(true);
 	getChildRef<LLLayoutPanel>("background_area").setBackgroundVisible(mModal);
 
 	setMouseOpaque(mModal);
 }
 
-void LLWindowShade::draw()
+void LLWindowShade::setBackgroundImage(LLUIImage* image)
 {
-	LLRect message_rect = getChild<LLTextBox>("notification_text")->getTextBoundingRect();
-
-	LLLayoutPanel* notification_area = getChild<LLLayoutPanel>("notification_area");
-
-	notification_area->reshape(notification_area->getRect().getWidth(), 
-		llclamp(message_rect.getHeight() + 10, 
-				llmin(mFormHeight, MAX_NOTIFICATION_AREA_HEIGHT),
-				MAX_NOTIFICATION_AREA_HEIGHT));
-
-	LLUICtrl::draw();
-	if (mNotification && !mNotification->isActive())
-	{
-		hide();
-	}
+	getChild<LLLayoutPanel>("notification_area")->setTransparentImage(image);
 }
 
-void LLWindowShade::hide()
+void LLWindowShade::setTextColor(LLColor4 color)
 {
-	getChildRef<LLLayoutPanel>("notification_area").setVisible(false);
-	getChildRef<LLLayoutPanel>("background_area").setBackgroundVisible(false);
-
-	setMouseOpaque(false);
+	getChild<LLTextBox>("notification_text")->setColor(color);
 }
 
-void LLWindowShade::onCloseNotification()
+bool LLWindowShade::isShown() const
 {
-	LLNotifications::instance().cancel(mNotification);
+	return getChildRef<LLLayoutPanel>("notification_area").getVisible();
 }
 
-void LLWindowShade::onClickIgnore(LLUICtrl* ctrl)
+void LLWindowShade::setCanClose(bool can_close)
 {
-	bool check = ctrl->getValue().asBoolean();
-	if (mNotification && mNotification->getForm()->getIgnoreType() == LLNotificationForm::IGNORE_SHOW_AGAIN)
-	{
-		// question was "show again" so invert value to get "ignore"
-		check = !check;
-	}
-	mNotification->setIgnored(check);
+	getChildView("close_panel")->setVisible(can_close);
 }
 
-void LLWindowShade::onClickNotificationButton(const std::string& name)
+LLNotificationPtr LLWindowShade::getCurrentNotification()
 {
-	if (!mNotification) return;
-
-	mNotificationResponse[name] = true;
-
-	mNotification->respond(mNotificationResponse);
+	if (mNotifications.empty())
+	{
+		return LLNotificationPtr();
+	}
+	return mNotifications.back();
 }
 
-void LLWindowShade::onEnterNotificationText(LLUICtrl* ctrl, const std::string& name)
-{
-	mNotificationResponse[name] = ctrl->getValue().asString();
-}
diff --git a/indra/llui/llwindowshade.h b/indra/llui/llwindowshade.h
index 09ffc2cd54..6d753d1161 100644
--- a/indra/llui/llwindowshade.h
+++ b/indra/llui/llwindowshade.h
@@ -36,20 +36,28 @@ class LLWindowShade : public LLUICtrl
 public:
 	struct Params : public LLInitParam::Block<Params, LLUICtrl::Params>
 	{
-		Mandatory<LLNotificationPtr>	notification;
 		Optional<LLUIImage*>			bg_image;
-		Optional<LLUIColor>				text_color;
+		Optional<LLUIColor>				text_color,
+										shade_color;
 		Optional<bool>					modal,
 										can_close;
 
 		Params();
 	};
 
-	void show();
+	void show(LLNotificationPtr);
 	/*virtual*/ void draw();
 	void hide();
+	
+	bool isShown() const;
+
+	void setBackgroundImage(LLUIImage* image);
+	void setTextColor(LLColor4 color);
+	void setCanClose(bool can_close);
 
 private:
+	void displayLatestNotification();
+	LLNotificationPtr getCurrentNotification();
 	friend class LLUICtrlFactory;
 
 	LLWindowShade(const Params& p);
@@ -60,7 +68,7 @@ private:
 	void onEnterNotificationText(LLUICtrl* ctrl, const std::string& name);
 	void onClickIgnore(LLUICtrl* ctrl);
 
-	LLNotificationPtr	mNotification;
+	std::vector<LLNotificationPtr>	mNotifications;
 	LLSD				mNotificationResponse;
 	bool				mModal;
 	S32					mFormHeight;
diff --git a/indra/llui/llxuiparser.cpp b/indra/llui/llxuiparser.cpp
new file mode 100644
index 0000000000..afc76024d1
--- /dev/null
+++ b/indra/llui/llxuiparser.cpp
@@ -0,0 +1,1756 @@
+/** 
+ * @file llxuiparser.cpp
+ * @brief Utility functions for handling XUI structures in XML
+ *
+ * $LicenseInfo:firstyear=2003&license=viewerlgpl$
+ * 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
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "llxuiparser.h"
+
+#include "llxmlnode.h"
+
+#ifdef LL_STANDALONE
+#include <expat.h>
+#else
+#include "expat/expat.h"
+#endif
+
+#include <fstream>
+#include <boost/tokenizer.hpp>
+//#include <boost/spirit/include/qi.hpp>
+#include <boost/spirit/include/classic_core.hpp>
+
+#include "lluicolor.h"
+
+using namespace BOOST_SPIRIT_CLASSIC_NS;
+
+const S32 MAX_STRING_ATTRIBUTE_SIZE = 40;
+
+static 	LLInitParam::Parser::parser_read_func_map_t sXSDReadFuncs;
+static 	LLInitParam::Parser::parser_write_func_map_t sXSDWriteFuncs;
+static 	LLInitParam::Parser::parser_inspect_func_map_t sXSDInspectFuncs;
+
+static 	LLInitParam::Parser::parser_read_func_map_t sSimpleXUIReadFuncs;
+static 	LLInitParam::Parser::parser_write_func_map_t sSimpleXUIWriteFuncs;
+static 	LLInitParam::Parser::parser_inspect_func_map_t sSimpleXUIInspectFuncs;
+
+const char* NO_VALUE_MARKER = "no_value";
+
+const S32 LINE_NUMBER_HERE = 0;
+
+struct MaxOccursValues : public LLInitParam::TypeValuesHelper<U32, MaxOccursValues>
+{
+	static void declareValues()
+	{
+		declare("unbounded", U32_MAX);
+	}
+};
+
+struct Occurs : public LLInitParam::Block<Occurs>
+{
+	Optional<U32>					minOccurs;
+	Optional<U32, MaxOccursValues>	maxOccurs;
+
+	Occurs()
+	:	minOccurs("minOccurs", 0),
+		maxOccurs("maxOccurs", U32_MAX)
+
+	{}
+};
+
+
+typedef enum
+{
+	USE_REQUIRED,
+	USE_OPTIONAL
+} EUse;
+
+namespace LLInitParam
+{
+	template<>
+	struct TypeValues<EUse> : public TypeValuesHelper<EUse>
+	{
+		static void declareValues()
+		{
+			declare("required", USE_REQUIRED);
+			declare("optional", USE_OPTIONAL);
+		}
+	};
+}
+
+struct Element;
+struct Group;
+struct Choice;
+struct Sequence;
+struct Any;
+
+struct Attribute : public LLInitParam::Block<Attribute>
+{
+	Mandatory<std::string>	name;
+	Mandatory<std::string>	type;
+	Mandatory<EUse>			use;
+	
+	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 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>
+{
+	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()
+	:	name("name"),
+		attribute("xs:attribute"),
+		elements("xs:element"),
+		mixed("mixed")
+	{
+	}
+};
+
+struct ElementContents : public LLInitParam::ChoiceBlock<ElementContents, Occurs>
+{
+	Alternative<SimpleType>		simpleType;
+	Alternative<ComplexType>	complexType;
+
+	ElementContents()
+	:	simpleType("simpleType"),
+		complexType("complexType")
+	{}
+};
+
+struct Element : public LLInitParam::Block<Element, ElementContents>
+{
+	Optional<std::string>	name,
+							ref,
+							type;
+
+	Element()
+	:	name("xs:name"),
+		ref("xs:ref"),
+		type("xs:type")
+	{}
+};
+
+struct Schema : public LLInitParam::Block<Schema>
+{
+private:
+	Mandatory<std::string>	targetNamespace,
+							xmlns,
+							xs;
+
+public:
+	Optional<std::string>	attributeFormDefault,
+							elementFormDefault;
+
+	Mandatory<Element>		root_element;
+	
+	void setNameSpace(const std::string& ns) {targetNamespace = ns; xmlns = ns;}
+
+	Schema(const std::string& ns = LLStringUtil::null)
+	:	attributeFormDefault("attributeFormDefault"),
+		elementFormDefault("elementFormDefault"),
+		xs("xmlns:xs"),
+		targetNamespace("targetNamespace"),
+		xmlns("xmlns"),
+		root_element("xs:element")
+	{
+		attributeFormDefault = "unqualified";
+		elementFormDefault = "qualified";
+		xs = "http://www.w3.org/2001/XMLSchema";
+		if (!ns.empty())
+		{
+			setNameSpace(ns);
+		};
+	}
+
+};
+
+//
+// LLXSDWriter
+//
+LLXSDWriter::LLXSDWriter()
+: Parser(sXSDReadFuncs, sXSDWriteFuncs, sXSDInspectFuncs)
+{
+	registerInspectFunc<bool>(boost::bind(&LLXSDWriter::writeAttribute, this, "xs:boolean", _1, _2, _3, _4));
+	registerInspectFunc<std::string>(boost::bind(&LLXSDWriter::writeAttribute, this, "xs:string", _1, _2, _3, _4));
+	registerInspectFunc<U8>(boost::bind(&LLXSDWriter::writeAttribute, this, "xs:unsignedByte", _1, _2, _3, _4));
+	registerInspectFunc<S8>(boost::bind(&LLXSDWriter::writeAttribute, this, "xs:signedByte", _1, _2, _3, _4));
+	registerInspectFunc<U16>(boost::bind(&LLXSDWriter::writeAttribute, this, "xs:unsignedShort", _1, _2, _3, _4));
+	registerInspectFunc<S16>(boost::bind(&LLXSDWriter::writeAttribute, this, "xs:signedShort", _1, _2, _3, _4));
+	registerInspectFunc<U32>(boost::bind(&LLXSDWriter::writeAttribute, this, "xs:unsignedInt", _1, _2, _3, _4));
+	registerInspectFunc<S32>(boost::bind(&LLXSDWriter::writeAttribute, this, "xs:integer", _1, _2, _3, _4));
+	registerInspectFunc<F32>(boost::bind(&LLXSDWriter::writeAttribute, this, "xs:float", _1, _2, _3, _4));
+	registerInspectFunc<F64>(boost::bind(&LLXSDWriter::writeAttribute, this, "xs:double", _1, _2, _3, _4));
+	registerInspectFunc<LLColor4>(boost::bind(&LLXSDWriter::writeAttribute, this, "xs:string", _1, _2, _3, _4));
+	registerInspectFunc<LLUIColor>(boost::bind(&LLXSDWriter::writeAttribute, this, "xs:string", _1, _2, _3, _4));
+	registerInspectFunc<LLUUID>(boost::bind(&LLXSDWriter::writeAttribute, this, "xs:string", _1, _2, _3, _4));
+	registerInspectFunc<LLSD>(boost::bind(&LLXSDWriter::writeAttribute, this, "xs:string", _1, _2, _3, _4));
+}
+
+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");
+	block.inspectBlock(*this);
+
+	// duplicate element choices
+	LLXMLNodeList children;
+	mElementNode->getChildren("xs:element", children, FALSE);
+	for (LLXMLNodeList::iterator child_it = children.begin(); child_it != children.end(); ++child_it)
+	{
+		LLXMLNodePtr child_copy = child_it->second->deepCopy();
+		std::string child_name;
+		child_copy->getAttributeString("name", child_name);
+		child_copy->setAttributeString("name", type_name + "." + child_name);
+		mElementNode->addChild(child_copy);
+	}
+
+	LLXMLNodePtr element_declaration_node = mSchemaNode->createChild("xs:element", false);
+	element_declaration_node->createChild("name", true)->setStringValue(type_name);
+	element_declaration_node->createChild("type", true)->setStringValue(type_name);
+}
+
+void LLXSDWriter::writeAttribute(const std::string& type, const Parser::name_stack_t& stack, S32 min_count, S32 max_count, const std::vector<std::string>* possible_values)
+{
+	name_stack_t non_empty_names;
+	std::string attribute_name;
+	for (name_stack_t::const_iterator it = stack.begin();
+		it != stack.end();
+		++it)
+	{
+		const std::string& name = it->first;
+		if (!name.empty())
+		{
+			non_empty_names.push_back(*it);
+		}
+	}
+
+	for (name_stack_t::const_iterator it = non_empty_names.begin();
+		it != non_empty_names.end();
+		++it)
+	{
+		if (!attribute_name.empty())
+		{
+			attribute_name += ".";
+		}
+		attribute_name += it->first;
+	}
+
+	// only flag non-nested attributes as mandatory, nested attributes have variant syntax
+	// that can't be properly constrained in XSD
+	// e.g. <foo mandatory.value="bar"/> vs <foo><mandatory value="bar"/></foo>
+	bool attribute_mandatory = min_count == 1 && max_count == 1 && non_empty_names.size() == 1;
+
+	// don't bother supporting "Multiple" params as xml attributes
+	if (max_count <= 1)
+	{
+		// add compound attribute to root node
+		addAttributeToSchema(mAttributeNode, attribute_name, type, attribute_mandatory, possible_values);
+	}
+
+	// now generated nested elements for compound attributes
+	if (non_empty_names.size() > 1 && !attribute_mandatory)
+	{
+		std::string element_name;
+
+		// traverse all but last element, leaving that as an attribute name
+		name_stack_t::const_iterator end_it = non_empty_names.end();
+		end_it--;
+
+		for (name_stack_t::const_iterator it = non_empty_names.begin();
+			it != end_it;
+			++it)
+		{
+			if (it != non_empty_names.begin())
+			{
+				element_name += ".";
+			}
+			element_name += it->first;
+		}
+
+		std::string short_attribute_name = non_empty_names.back().first;
+
+		LLXMLNodePtr complex_type_node;
+
+		// find existing element node here, starting at tail of child list
+		if (mElementNode->mChildren.notNull())
+		{
+			for(LLXMLNodePtr element = mElementNode->mChildren->tail;
+				element.notNull(); 
+				element = element->mPrev)
+			{
+				std::string name;
+				if(element->getAttributeString("name", name) && name == element_name)
+				{
+					complex_type_node = element->mChildren->head;
+					break;
+				}
+			}
+		}
+		//create complex_type node
+		//
+		//<xs:element
+        //    maxOccurs="1"
+        //    minOccurs="0"
+        //    name="name">
+        //       <xs:complexType>
+        //       </xs:complexType>
+        //</xs:element>
+		if(complex_type_node.isNull())
+		{
+			complex_type_node = mElementNode->createChild("xs:element", false);
+
+			complex_type_node->createChild("minOccurs", true)->setIntValue(min_count);
+			complex_type_node->createChild("maxOccurs", true)->setIntValue(max_count);
+			complex_type_node->createChild("name",		true)->setStringValue(element_name);
+			complex_type_node = complex_type_node->createChild("xs:complexType", false);
+		}
+
+		addAttributeToSchema(complex_type_node, short_attribute_name, type, false, possible_values);
+	}
+}
+
+void LLXSDWriter::addAttributeToSchema(LLXMLNodePtr type_declaration_node, const std::string& attribute_name, const std::string& type, bool mandatory, const std::vector<std::string>* possible_values)
+{
+	if (!attribute_name.empty())
+	{
+		LLXMLNodePtr new_enum_type_node;
+		if (possible_values != NULL)
+		{
+			// custom attribute type, for example
+			//<xs:simpleType>
+			 // <xs:restriction
+			 //    base="xs:string">
+			 //     <xs:enumeration
+			 //      value="a" />
+			 //     <xs:enumeration
+			 //      value="b" />
+			 //   </xs:restriction>
+			 // </xs:simpleType>
+			new_enum_type_node = new LLXMLNode("xs:simpleType", false);
+
+			LLXMLNodePtr restriction_node = new_enum_type_node->createChild("xs:restriction", false);
+			restriction_node->createChild("base", true)->setStringValue("xs:string");
+
+			for (std::vector<std::string>::const_iterator it = possible_values->begin();
+				it != possible_values->end();
+				++it)
+			{
+				LLXMLNodePtr enum_node = restriction_node->createChild("xs:enumeration", false);
+				enum_node->createChild("value", true)->setStringValue(*it);
+			}
+		}
+
+		string_set_t& attributes_written = mAttributesWritten[type_declaration_node];
+
+		string_set_t::iterator found_it = attributes_written.lower_bound(attribute_name);
+
+		// attribute not yet declared
+		if (found_it == attributes_written.end() || attributes_written.key_comp()(attribute_name, *found_it))
+		{
+			attributes_written.insert(found_it, attribute_name);
+
+			LLXMLNodePtr attribute_node = type_declaration_node->createChild("xs:attribute", false);
+
+			// attribute name
+			attribute_node->createChild("name", true)->setStringValue(attribute_name);
+
+			if (new_enum_type_node.notNull())
+			{
+				attribute_node->addChild(new_enum_type_node);
+			}
+			else
+			{
+				// simple attribute type
+				attribute_node->createChild("type", true)->setStringValue(type);
+			}
+
+			// required or optional
+			attribute_node->createChild("use", true)->setStringValue(mandatory ? "required" : "optional");
+		}
+		 // attribute exists...handle collision of same name attributes with potentially different types
+		else
+		{
+			LLXMLNodePtr attribute_declaration;
+			if (type_declaration_node.notNull())
+			{
+				for(LLXMLNodePtr node = type_declaration_node->mChildren->tail; 
+					node.notNull(); 
+					node = node->mPrev)
+				{
+					std::string name;
+					if (node->getAttributeString("name", name) && name == attribute_name)
+					{
+						attribute_declaration = node;
+						break;
+					}
+				}
+			}
+
+			bool new_type_is_enum = new_enum_type_node.notNull();
+			bool existing_type_is_enum = !attribute_declaration->hasAttribute("type");
+
+			// either type is enum, revert to string in collision
+			// don't bother to check for enum equivalence
+			if (new_type_is_enum || existing_type_is_enum)
+			{
+				if (attribute_declaration->hasAttribute("type"))
+				{
+					attribute_declaration->setAttributeString("type", "xs:string");
+				}
+				else
+				{
+					attribute_declaration->createChild("type", true)->setStringValue("xs:string");
+				}
+				attribute_declaration->deleteChildren("xs:simpleType");
+			}
+			else 
+			{
+				// check for collision of different standard types
+				std::string existing_type;
+				attribute_declaration->getAttributeString("type", existing_type);
+				// if current type is not the same as the new type, revert to strnig
+				if (existing_type != type)
+				{
+					// ...than use most general type, string
+					attribute_declaration->setAttributeString("type", "string");
+				}
+			}
+		}
+	}
+}
+
+//
+// LLXUIXSDWriter
+//
+void LLXUIXSDWriter::writeXSD(const std::string& type_name, const std::string& path, const LLInitParam::BaseBlock& block)
+{
+	std::string file_name(path);
+	file_name += type_name + ".xsd";
+	LLXMLNodePtr root_nodep = new LLXMLNode();
+
+	LLXSDWriter::writeXSD(type_name, root_nodep, block, "http://www.lindenlab.com/xui");
+
+	// add includes for all possible children
+	const std::type_info* type = *LLWidgetTypeRegistry::instance().getValue(type_name);
+	const widget_registry_t* widget_registryp = LLChildRegistryRegistry::instance().getValue(type);
+
+	// add choices for valid children
+	if (widget_registryp)
+	{
+		// add include declarations for all valid children
+		for (widget_registry_t::Registrar::registry_map_t::const_iterator it = widget_registryp->currentRegistrar().beginItems();
+		     it != widget_registryp->currentRegistrar().endItems();
+		     ++it)
+		{
+			std::string widget_name = it->first;
+			if (widget_name == type_name)
+			{
+				continue;
+			}
+			LLXMLNodePtr nodep = new LLXMLNode("xs:include", false);
+			nodep->createChild("schemaLocation", true)->setStringValue(widget_name + ".xsd");
+			
+			// add to front of schema
+			mSchemaNode->addChild(nodep, mSchemaNode);
+		}
+
+		for (widget_registry_t::Registrar::registry_map_t::const_iterator it = widget_registryp->currentRegistrar().beginItems();
+			it != widget_registryp->currentRegistrar().endItems();
+			++it)
+		{
+			std::string widget_name = it->first;
+			//<xs:element name="widget_name" type="widget_name">
+			LLXMLNodePtr widget_node = mElementNode->createChild("xs:element", false);
+			widget_node->createChild("name", true)->setStringValue(widget_name);
+			widget_node->createChild("type", true)->setStringValue(widget_name);
+		}
+	}
+
+	LLFILE* xsd_file = LLFile::fopen(file_name.c_str(), "w");
+	LLXMLNode::writeHeaderToFile(xsd_file);
+	root_nodep->writeToFile(xsd_file);
+	fclose(xsd_file);
+}
+
+static 	LLInitParam::Parser::parser_read_func_map_t sXUIReadFuncs;
+static 	LLInitParam::Parser::parser_write_func_map_t sXUIWriteFuncs;
+static 	LLInitParam::Parser::parser_inspect_func_map_t sXUIInspectFuncs;
+
+//
+// LLXUIParser
+//
+LLXUIParser::LLXUIParser()
+:	Parser(sXUIReadFuncs, sXUIWriteFuncs, sXUIInspectFuncs),
+	mCurReadDepth(0)
+{
+	if (sXUIReadFuncs.empty())
+	{
+		registerParserFuncs<LLInitParam::Flag>(readFlag, writeFlag);
+		registerParserFuncs<bool>(readBoolValue, writeBoolValue);
+		registerParserFuncs<std::string>(readStringValue, writeStringValue);
+		registerParserFuncs<U8>(readU8Value, writeU8Value);
+		registerParserFuncs<S8>(readS8Value, writeS8Value);
+		registerParserFuncs<U16>(readU16Value, writeU16Value);
+		registerParserFuncs<S16>(readS16Value, writeS16Value);
+		registerParserFuncs<U32>(readU32Value, writeU32Value);
+		registerParserFuncs<S32>(readS32Value, writeS32Value);
+		registerParserFuncs<F32>(readF32Value, writeF32Value);
+		registerParserFuncs<F64>(readF64Value, writeF64Value);
+		registerParserFuncs<LLColor4>(readColor4Value, writeColor4Value);
+		registerParserFuncs<LLUIColor>(readUIColorValue, writeUIColorValue);
+		registerParserFuncs<LLUUID>(readUUIDValue, writeUUIDValue);
+		registerParserFuncs<LLSD>(readSDValue, writeSDValue);
+	}
+}
+
+static LLFastTimer::DeclareTimer FTM_PARSE_XUI("XUI Parsing");
+const LLXMLNodePtr DUMMY_NODE = new LLXMLNode();
+
+void LLXUIParser::readXUI(LLXMLNodePtr node, LLInitParam::BaseBlock& block, const std::string& filename, bool silent)
+{
+	LLFastTimer timer(FTM_PARSE_XUI);
+	mNameStack.clear();
+	mRootNodeName = node->getName()->mString;
+	mCurFileName = filename;
+	mCurReadDepth = 0;
+	setParseSilently(silent);
+
+	if (node.isNull())
+	{
+		parserWarning("Invalid node");
+	}
+	else
+	{
+		readXUIImpl(node, block);
+	}
+}
+
+bool LLXUIParser::readXUIImpl(LLXMLNodePtr nodep, LLInitParam::BaseBlock& block)
+{
+	typedef boost::tokenizer<boost::char_separator<char> > tokenizer;
+	boost::char_separator<char> sep(".");
+
+	bool values_parsed = false;
+	bool silent = mCurReadDepth > 0;
+
+	if (nodep->getFirstChild().isNull() 
+		&& nodep->mAttributes.empty() 
+		&& nodep->getSanitizedValue().empty())
+	{
+		// empty node, just parse as flag
+		mCurReadNode = DUMMY_NODE;
+		return block.submitValue(mNameStack, *this, silent);
+	}
+
+	// submit attributes for current node
+	values_parsed |= readAttributes(nodep, block);
+
+	// treat text contents of xml node as "value" parameter
+	std::string text_contents = nodep->getSanitizedValue();
+	if (!text_contents.empty())
+	{
+		mCurReadNode = nodep;
+		mNameStack.push_back(std::make_pair(std::string("value"), true));
+		// child nodes are not necessarily valid parameters (could be a child widget)
+		// so don't complain once we've recursed
+		if (!block.submitValue(mNameStack, *this, true))
+		{
+			mNameStack.pop_back();
+			block.submitValue(mNameStack, *this, silent);
+		}
+		else
+		{
+			mNameStack.pop_back();
+		}
+	}
+
+	// then traverse children
+	// child node must start with last name of parent node (our "scope")
+	// for example: "<button><button.param nested_param1="foo"><param.nested_param2 nested_param3="bar"/></button.param></button>"
+	// which equates to the following nesting:
+	// button
+	//     param
+	//         nested_param1
+	//         nested_param2
+	//             nested_param3	
+	mCurReadDepth++;
+	for(LLXMLNodePtr childp = nodep->getFirstChild(); childp.notNull();)
+	{
+		std::string child_name(childp->getName()->mString);
+		S32 num_tokens_pushed = 0;
+
+		// for non "dotted" child nodes	check to see if child node maps to another widget type
+		// and if not, treat as a child element of the current node
+		// e.g. <button><rect left="10"/></button> will interpret <rect> as "button.rect"
+		// since there is no widget named "rect"
+		if (child_name.find(".") == std::string::npos) 
+		{
+			mNameStack.push_back(std::make_pair(child_name, true));
+			num_tokens_pushed++;
+		}
+		else
+		{
+			// parse out "dotted" name into individual tokens
+			tokenizer name_tokens(child_name, sep);
+
+			tokenizer::iterator name_token_it = name_tokens.begin();
+			if(name_token_it == name_tokens.end()) 
+			{
+				childp = childp->getNextSibling();
+				continue;
+			}
+
+			// check for proper nesting
+			if (mNameStack.empty())
+			{
+				if (*name_token_it != mRootNodeName)
+				{
+					childp = childp->getNextSibling();
+					continue;
+				}
+			}
+			else if(mNameStack.back().first != *name_token_it)
+			{
+				childp = childp->getNextSibling();
+				continue;
+			}
+
+			// now ignore first token
+			++name_token_it; 
+
+			// copy remaining tokens on to our running token list
+			for(tokenizer::iterator token_to_push = name_token_it; token_to_push != name_tokens.end(); ++token_to_push)
+			{
+				mNameStack.push_back(std::make_pair(*token_to_push, true));
+				num_tokens_pushed++;
+			}
+		}
+
+		// recurse and visit children XML nodes
+		if(readXUIImpl(childp, block))
+		{
+			// child node successfully parsed, remove from DOM
+
+			values_parsed = true;
+			LLXMLNodePtr node_to_remove = childp;
+			childp = childp->getNextSibling();
+
+			nodep->deleteChild(node_to_remove);
+		}
+		else
+		{
+			childp = childp->getNextSibling();
+		}
+
+		while(num_tokens_pushed-- > 0)
+		{
+			mNameStack.pop_back();
+		}
+	}
+	mCurReadDepth--;
+	return values_parsed;
+}
+
+bool LLXUIParser::readAttributes(LLXMLNodePtr nodep, LLInitParam::BaseBlock& block)
+{
+	typedef boost::tokenizer<boost::char_separator<char> > tokenizer;
+	boost::char_separator<char> sep(".");
+
+	bool any_parsed = false;
+	bool silent = mCurReadDepth > 0;
+
+	for(LLXMLAttribList::const_iterator attribute_it = nodep->mAttributes.begin(); 
+		attribute_it != nodep->mAttributes.end(); 
+		++attribute_it)
+	{
+		S32 num_tokens_pushed = 0;
+		std::string attribute_name(attribute_it->first->mString);
+		mCurReadNode = attribute_it->second;
+
+		tokenizer name_tokens(attribute_name, sep);
+		// copy remaining tokens on to our running token list
+		for(tokenizer::iterator token_to_push = name_tokens.begin(); token_to_push != name_tokens.end(); ++token_to_push)
+		{
+			mNameStack.push_back(std::make_pair(*token_to_push, true));
+			num_tokens_pushed++;
+		}
+
+		// child nodes are not necessarily valid attributes, so don't complain once we've recursed
+		any_parsed |= block.submitValue(mNameStack, *this, silent);
+		
+		while(num_tokens_pushed-- > 0)
+		{
+			mNameStack.pop_back();
+		}
+	}
+
+	return any_parsed;
+}
+
+void LLXUIParser::writeXUI(LLXMLNodePtr node, const LLInitParam::BaseBlock &block, const LLInitParam::BaseBlock* diff_block)
+{
+	mWriteRootNode = node;
+	name_stack_t name_stack = Parser::name_stack_t();
+	block.serializeBlock(*this, name_stack, diff_block);
+	mOutNodes.clear();
+}
+
+// go from a stack of names to a specific XML node
+LLXMLNodePtr LLXUIParser::getNode(name_stack_t& stack)
+{
+	LLXMLNodePtr out_node = mWriteRootNode;
+
+	name_stack_t::iterator next_it = stack.begin();
+	for (name_stack_t::iterator it = stack.begin();
+		it != stack.end();
+		it = next_it)
+	{
+		++next_it;
+		if (it->first.empty())
+		{
+			it->second = false;
+			continue;
+		}
+
+		out_nodes_t::iterator found_it = mOutNodes.find(it->first);
+
+		// node with this name not yet written
+		if (found_it == mOutNodes.end() || it->second)
+		{
+			// make an attribute if we are the last element on the name stack
+			bool is_attribute = next_it == stack.end();
+			LLXMLNodePtr new_node = new LLXMLNode(it->first.c_str(), is_attribute);
+			out_node->addChild(new_node);
+			mOutNodes[it->first] = new_node;
+			out_node = new_node;
+			it->second = false;
+		}
+		else
+		{
+			out_node = found_it->second;
+		}
+	}
+
+	return (out_node == mWriteRootNode ? LLXMLNodePtr(NULL) : out_node);
+}
+
+bool LLXUIParser::readFlag(Parser& parser, void* val_ptr)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	return self.mCurReadNode == DUMMY_NODE;
+}
+
+bool LLXUIParser::writeFlag(Parser& parser, const void* val_ptr, name_stack_t& stack)
+{
+	// just create node
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	LLXMLNodePtr node = self.getNode(stack);
+	return node.notNull();
+}
+
+bool LLXUIParser::readBoolValue(Parser& parser, void* val_ptr)
+{
+	S32 value;
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	bool success = self.mCurReadNode->getBoolValue(1, &value);
+	*((bool*)val_ptr) = (value != FALSE);
+	return success;
+}
+
+bool LLXUIParser::writeBoolValue(Parser& parser, const void* val_ptr, name_stack_t& stack)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	LLXMLNodePtr node = self.getNode(stack);
+	if (node.notNull())
+	{
+		node->setBoolValue(*((bool*)val_ptr));
+		return true;
+	}
+	return false;
+}
+
+bool LLXUIParser::readStringValue(Parser& parser, void* val_ptr)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	*((std::string*)val_ptr) = self.mCurReadNode->getSanitizedValue();
+	return true;
+}
+
+bool LLXUIParser::writeStringValue(Parser& parser, const void* val_ptr, name_stack_t& stack)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	LLXMLNodePtr node = self.getNode(stack);
+	if (node.notNull())
+	{
+		const std::string* string_val = reinterpret_cast<const std::string*>(val_ptr);
+		if (string_val->find('\n') != std::string::npos 
+			|| string_val->size() > MAX_STRING_ATTRIBUTE_SIZE)
+		{
+			// don't write strings with newlines into attributes
+			std::string attribute_name = node->getName()->mString;
+			LLXMLNodePtr parent_node = node->mParent;
+			parent_node->deleteChild(node);
+			// write results in text contents of node
+			if (attribute_name == "value")
+			{
+				// "value" is implicit, just write to parent
+				node = parent_node;
+			}
+			else
+			{
+				// create a child that is not an attribute, but with same name
+				node = parent_node->createChild(attribute_name.c_str(), false);
+			}
+		}
+		node->setStringValue(*string_val);
+		return true;
+	}
+	return false;
+}
+
+bool LLXUIParser::readU8Value(Parser& parser, void* val_ptr)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	return self.mCurReadNode->getByteValue(1, (U8*)val_ptr);
+}
+
+bool LLXUIParser::writeU8Value(Parser& parser, const void* val_ptr, name_stack_t& stack)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	LLXMLNodePtr node = self.getNode(stack);
+	if (node.notNull())
+	{
+		node->setUnsignedValue(*((U8*)val_ptr));
+		return true;
+	}
+	return false;
+}
+
+bool LLXUIParser::readS8Value(Parser& parser, void* val_ptr)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	S32 value;
+	if(self.mCurReadNode->getIntValue(1, &value))
+	{
+		*((S8*)val_ptr) = value;
+		return true;
+	}
+	return false;
+}
+
+bool LLXUIParser::writeS8Value(Parser& parser, const void* val_ptr, name_stack_t& stack)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	LLXMLNodePtr node = self.getNode(stack);
+	if (node.notNull())
+	{
+		node->setIntValue(*((S8*)val_ptr));
+		return true;
+	}
+	return false;
+}
+
+bool LLXUIParser::readU16Value(Parser& parser, void* val_ptr)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	U32 value;
+	if(self.mCurReadNode->getUnsignedValue(1, &value))
+	{
+		*((U16*)val_ptr) = value;
+		return true;
+	}
+	return false;
+}
+
+bool LLXUIParser::writeU16Value(Parser& parser, const void* val_ptr, name_stack_t& stack)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	LLXMLNodePtr node = self.getNode(stack);
+	if (node.notNull())
+	{
+		node->setUnsignedValue(*((U16*)val_ptr));
+		return true;
+	}
+	return false;
+}
+
+bool LLXUIParser::readS16Value(Parser& parser, void* val_ptr)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	S32 value;
+	if(self.mCurReadNode->getIntValue(1, &value))
+	{
+		*((S16*)val_ptr) = value;
+		return true;
+	}
+	return false;
+}
+
+bool LLXUIParser::writeS16Value(Parser& parser, const void* val_ptr, name_stack_t& stack)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	LLXMLNodePtr node = self.getNode(stack);
+	if (node.notNull())
+	{
+		node->setIntValue(*((S16*)val_ptr));
+		return true;
+	}
+	return false;
+}
+
+bool LLXUIParser::readU32Value(Parser& parser, void* val_ptr)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	return self.mCurReadNode->getUnsignedValue(1, (U32*)val_ptr);
+}
+
+bool LLXUIParser::writeU32Value(Parser& parser, const void* val_ptr, name_stack_t& stack)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	LLXMLNodePtr node = self.getNode(stack);
+	if (node.notNull())
+	{
+		node->setUnsignedValue(*((U32*)val_ptr));
+		return true;
+	}
+	return false;
+}
+
+bool LLXUIParser::readS32Value(Parser& parser, void* val_ptr)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	return self.mCurReadNode->getIntValue(1, (S32*)val_ptr);
+}
+
+bool LLXUIParser::writeS32Value(Parser& parser, const void* val_ptr, name_stack_t& stack)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	LLXMLNodePtr node = self.getNode(stack);
+	if (node.notNull())
+	{
+		node->setIntValue(*((S32*)val_ptr));
+		return true;
+	}
+	return false;
+}
+
+bool LLXUIParser::readF32Value(Parser& parser, void* val_ptr)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	return self.mCurReadNode->getFloatValue(1, (F32*)val_ptr);
+}
+
+bool LLXUIParser::writeF32Value(Parser& parser, const void* val_ptr, name_stack_t& stack)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	LLXMLNodePtr node = self.getNode(stack);
+	if (node.notNull())
+	{
+		node->setFloatValue(*((F32*)val_ptr));
+		return true;
+	}
+	return false;
+}
+
+bool LLXUIParser::readF64Value(Parser& parser, void* val_ptr)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	return self.mCurReadNode->getDoubleValue(1, (F64*)val_ptr);
+}
+
+bool LLXUIParser::writeF64Value(Parser& parser, const void* val_ptr, name_stack_t& stack)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	LLXMLNodePtr node = self.getNode(stack);
+	if (node.notNull())
+	{
+		node->setDoubleValue(*((F64*)val_ptr));
+		return true;
+	}
+	return false;
+}
+
+bool LLXUIParser::readColor4Value(Parser& parser, void* val_ptr)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	LLColor4* colorp = (LLColor4*)val_ptr;
+	if(self.mCurReadNode->getFloatValue(4, colorp->mV) >= 3)
+	{
+		return true;
+	}
+
+	return false;
+}
+
+bool LLXUIParser::writeColor4Value(Parser& parser, const void* val_ptr, name_stack_t& stack)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	LLXMLNodePtr node = self.getNode(stack);
+	if (node.notNull())
+	{
+		LLColor4 color = *((LLColor4*)val_ptr);
+		node->setFloatValue(4, color.mV);
+		return true;
+	}
+	return false;
+}
+
+bool LLXUIParser::readUIColorValue(Parser& parser, void* val_ptr)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	LLUIColor* param = (LLUIColor*)val_ptr;
+	LLColor4 color;
+	bool success =  self.mCurReadNode->getFloatValue(4, color.mV) >= 3;
+	if (success)
+	{
+		param->set(color);
+		return true;
+	}
+	return false;
+}
+
+bool LLXUIParser::writeUIColorValue(Parser& parser, const void* val_ptr, name_stack_t& stack)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	LLXMLNodePtr node = self.getNode(stack);
+	if (node.notNull())
+	{
+		LLUIColor color = *((LLUIColor*)val_ptr);
+		//RN: don't write out the color that is represented by a function
+		// rely on param block exporting to get the reference to the color settings
+		if (color.isReference()) return false;
+		node->setFloatValue(4, color.get().mV);
+		return true;
+	}
+	return false;
+}
+
+bool LLXUIParser::readUUIDValue(Parser& parser, void* val_ptr)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	LLUUID temp_id;
+	// LLUUID::set is destructive, so use temporary value
+	if (temp_id.set(self.mCurReadNode->getSanitizedValue()))
+	{
+		*(LLUUID*)(val_ptr) = temp_id;
+		return true;
+	}
+	return false;
+}
+
+bool LLXUIParser::writeUUIDValue(Parser& parser, const void* val_ptr, name_stack_t& stack)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	LLXMLNodePtr node = self.getNode(stack);
+	if (node.notNull())
+	{
+		node->setStringValue(((LLUUID*)val_ptr)->asString());
+		return true;
+	}
+	return false;
+}
+
+bool LLXUIParser::readSDValue(Parser& parser, void* val_ptr)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+	*((LLSD*)val_ptr) = LLSD(self.mCurReadNode->getSanitizedValue());
+	return true;
+}
+
+bool LLXUIParser::writeSDValue(Parser& parser, const void* val_ptr, name_stack_t& stack)
+{
+	LLXUIParser& self = static_cast<LLXUIParser&>(parser);
+
+	LLXMLNodePtr node = self.getNode(stack);
+	if (node.notNull())
+	{
+		std::string string_val = ((LLSD*)val_ptr)->asString();
+		if (string_val.find('\n') != std::string::npos || string_val.size() > MAX_STRING_ATTRIBUTE_SIZE)
+		{
+			// don't write strings with newlines into attributes
+			std::string attribute_name = node->getName()->mString;
+			LLXMLNodePtr parent_node = node->mParent;
+			parent_node->deleteChild(node);
+			// write results in text contents of node
+			if (attribute_name == "value")
+			{
+				// "value" is implicit, just write to parent
+				node = parent_node;
+			}
+			else
+			{
+				node = parent_node->createChild(attribute_name.c_str(), false);
+			}
+		}
+
+		node->setStringValue(string_val);
+		return true;
+	}
+	return false;
+}
+
+/*virtual*/ std::string LLXUIParser::getCurrentElementName()
+{
+	std::string full_name;
+	for (name_stack_t::iterator it = mNameStack.begin();	
+		it != mNameStack.end();
+		++it)
+	{
+		full_name += it->first + "."; // build up dotted names: "button.param.nestedparam."
+	}
+
+	return full_name;
+}
+
+void LLXUIParser::parserWarning(const std::string& message)
+{
+#ifdef LL_WINDOWS
+	// use Visual Studo friendly formatting of output message for easy access to originating xml
+	llutf16string utf16str = utf8str_to_utf16str(llformat("%s(%d):\t%s", mCurFileName.c_str(), mCurReadNode->getLineNumber(), message.c_str()).c_str());
+	utf16str += '\n';
+	OutputDebugString(utf16str.c_str());
+#else
+	Parser::parserWarning(message);
+#endif
+}
+
+void LLXUIParser::parserError(const std::string& message)
+{
+#ifdef LL_WINDOWS
+	llutf16string utf16str = utf8str_to_utf16str(llformat("%s(%d):\t%s", mCurFileName.c_str(), mCurReadNode->getLineNumber(), message.c_str()).c_str());
+	utf16str += '\n';
+	OutputDebugString(utf16str.c_str());
+#else
+	Parser::parserError(message);
+#endif
+}
+
+
+//
+// LLSimpleXUIParser
+//
+
+struct ScopedFile
+{
+	ScopedFile( const std::string& filename, const char* accessmode )
+	{
+		mFile = LLFile::fopen(filename, accessmode);
+	}
+
+	~ScopedFile()
+	{
+		fclose(mFile);
+		mFile = NULL;
+	}
+
+	S32 getRemainingBytes()
+	{
+		if (!isOpen()) return 0;
+
+		S32 cur_pos = ftell(mFile);
+		fseek(mFile, 0L, SEEK_END);
+		S32 file_size = ftell(mFile);
+		fseek(mFile, cur_pos, SEEK_SET);
+		return file_size - cur_pos;
+	}
+
+	bool isOpen() { return mFile != NULL; }
+
+	LLFILE* mFile;
+};
+LLSimpleXUIParser::LLSimpleXUIParser(LLSimpleXUIParser::element_start_callback_t element_cb)
+:	Parser(sSimpleXUIReadFuncs, sSimpleXUIWriteFuncs, sSimpleXUIInspectFuncs),
+	mCurReadDepth(0),
+	mElementCB(element_cb)
+{
+	if (sSimpleXUIReadFuncs.empty())
+	{
+		registerParserFuncs<LLInitParam::Flag>(readFlag);
+		registerParserFuncs<bool>(readBoolValue);
+		registerParserFuncs<std::string>(readStringValue);
+		registerParserFuncs<U8>(readU8Value);
+		registerParserFuncs<S8>(readS8Value);
+		registerParserFuncs<U16>(readU16Value);
+		registerParserFuncs<S16>(readS16Value);
+		registerParserFuncs<U32>(readU32Value);
+		registerParserFuncs<S32>(readS32Value);
+		registerParserFuncs<F32>(readF32Value);
+		registerParserFuncs<F64>(readF64Value);
+		registerParserFuncs<LLColor4>(readColor4Value);
+		registerParserFuncs<LLUIColor>(readUIColorValue);
+		registerParserFuncs<LLUUID>(readUUIDValue);
+		registerParserFuncs<LLSD>(readSDValue);
+	}
+}
+
+LLSimpleXUIParser::~LLSimpleXUIParser()
+{
+}
+
+
+bool LLSimpleXUIParser::readXUI(const std::string& filename, LLInitParam::BaseBlock& block, bool silent)
+{
+	LLFastTimer timer(FTM_PARSE_XUI);
+
+	mParser = XML_ParserCreate(NULL);
+	XML_SetUserData(mParser, this);
+	XML_SetElementHandler(			mParser,	startElementHandler, endElementHandler);
+	XML_SetCharacterDataHandler(	mParser,	characterDataHandler);
+
+	mOutputStack.push_back(std::make_pair(&block, 0));
+	mNameStack.clear();
+	mCurFileName = filename;
+	mCurReadDepth = 0;
+	setParseSilently(silent);
+
+	ScopedFile file(filename, "rb");
+	if( !file.isOpen() )
+	{
+		LL_WARNS("ReadXUI") << "Unable to open file " << filename << LL_ENDL;
+		XML_ParserFree( mParser );
+		return false;
+	}
+
+	S32 bytes_read = 0;
+	
+	S32 buffer_size = file.getRemainingBytes();
+	void* buffer = XML_GetBuffer(mParser, buffer_size);
+	if( !buffer ) 
+	{
+		LL_WARNS("ReadXUI") << "Unable to allocate XML buffer while reading file " << filename << LL_ENDL;
+		XML_ParserFree( mParser );
+		return false;
+	}
+
+	bytes_read = (S32)fread(buffer, 1, buffer_size, file.mFile);
+	if( bytes_read <= 0 )
+	{
+		LL_WARNS("ReadXUI") << "Error while reading file  " << filename << LL_ENDL;
+		XML_ParserFree( mParser );
+		return false;
+	}
+	
+	mEmptyLeafNode.push_back(false);
+
+	if( !XML_ParseBuffer(mParser, bytes_read, TRUE ) )
+	{
+		LL_WARNS("ReadXUI") << "Error while parsing file  " << filename << LL_ENDL;
+		XML_ParserFree( mParser );
+		return false;
+	}
+
+	mEmptyLeafNode.pop_back();
+
+	XML_ParserFree( mParser );
+	return true;
+}
+
+void LLSimpleXUIParser::startElementHandler(void *userData, const char *name, const char **atts)
+{
+	LLSimpleXUIParser* self = reinterpret_cast<LLSimpleXUIParser*>(userData);
+	self->startElement(name, atts);
+}
+
+void LLSimpleXUIParser::endElementHandler(void *userData, const char *name)
+{
+	LLSimpleXUIParser* self = reinterpret_cast<LLSimpleXUIParser*>(userData);
+	self->endElement(name);
+}
+
+void LLSimpleXUIParser::characterDataHandler(void *userData, const char *s, int len)
+{
+	LLSimpleXUIParser* self = reinterpret_cast<LLSimpleXUIParser*>(userData);
+	self->characterData(s, len);
+}
+
+void LLSimpleXUIParser::characterData(const char *s, int len)
+{
+	mTextContents += std::string(s, len);
+}
+
+void LLSimpleXUIParser::startElement(const char *name, const char **atts)
+{
+	processText();
+
+	typedef boost::tokenizer<boost::char_separator<char> > tokenizer;
+	boost::char_separator<char> sep(".");
+
+	if (mElementCB) 
+	{
+		LLInitParam::BaseBlock* blockp = mElementCB(*this, name);
+		if (blockp)
+		{
+			mOutputStack.push_back(std::make_pair(blockp, 0));
+		}
+	}
+
+	mOutputStack.back().second++;
+	S32 num_tokens_pushed = 0;
+	std::string child_name(name);
+
+	if (mOutputStack.back().second == 1)
+	{	// root node for this block
+		mScope.push_back(child_name);
+	}
+	else
+	{	// compound attribute
+		if (child_name.find(".") == std::string::npos) 
+		{
+			mNameStack.push_back(std::make_pair(child_name, true));
+			num_tokens_pushed++;
+			mScope.push_back(child_name);
+		}
+		else
+		{
+			// parse out "dotted" name into individual tokens
+			tokenizer name_tokens(child_name, sep);
+
+			tokenizer::iterator name_token_it = name_tokens.begin();
+			if(name_token_it == name_tokens.end()) 
+			{
+				return;
+			}
+
+			// check for proper nesting
+			if(!mScope.empty() && *name_token_it != mScope.back())
+			{
+				return;
+			}
+
+			// now ignore first token
+			++name_token_it; 
+
+			// copy remaining tokens on to our running token list
+			for(tokenizer::iterator token_to_push = name_token_it; token_to_push != name_tokens.end(); ++token_to_push)
+			{
+				mNameStack.push_back(std::make_pair(*token_to_push, true));
+				num_tokens_pushed++;
+			}
+			mScope.push_back(mNameStack.back().first);
+		}
+	}
+
+	// parent node is not empty
+	mEmptyLeafNode.back() = false;
+	// we are empty if we have no attributes
+	mEmptyLeafNode.push_back(atts[0] == NULL);
+
+	mTokenSizeStack.push_back(num_tokens_pushed);
+	readAttributes(atts);
+
+}
+
+void LLSimpleXUIParser::endElement(const char *name)
+{
+	bool has_text = processText();
+
+	// no text, attributes, or children
+	if (!has_text && mEmptyLeafNode.back())
+	{
+		// submit this as a valueless name (even though there might be text contents we haven't seen yet)
+		mCurAttributeValueBegin = NO_VALUE_MARKER;
+		mOutputStack.back().first->submitValue(mNameStack, *this, mParseSilently);
+	}
+
+	if (--mOutputStack.back().second == 0)
+	{
+		if (mOutputStack.empty())
+		{
+			LL_ERRS("ReadXUI") << "Parameter block output stack popped while empty." << LL_ENDL;
+		}
+		mOutputStack.pop_back();
+	}
+
+	S32 num_tokens_to_pop = mTokenSizeStack.back();
+	mTokenSizeStack.pop_back();
+	while(num_tokens_to_pop-- > 0)
+	{
+		mNameStack.pop_back();
+	}
+	mScope.pop_back();
+	mEmptyLeafNode.pop_back();
+}
+
+bool LLSimpleXUIParser::readAttributes(const char **atts)
+{
+	typedef boost::tokenizer<boost::char_separator<char> > tokenizer;
+	boost::char_separator<char> sep(".");
+
+	bool any_parsed = false;
+	for(S32 i = 0; atts[i] && atts[i+1]; i += 2 )
+	{
+		std::string attribute_name(atts[i]);
+		mCurAttributeValueBegin = atts[i+1];
+		
+		S32 num_tokens_pushed = 0;
+		tokenizer name_tokens(attribute_name, sep);
+		// copy remaining tokens on to our running token list
+		for(tokenizer::iterator token_to_push = name_tokens.begin(); token_to_push != name_tokens.end(); ++token_to_push)
+		{
+			mNameStack.push_back(std::make_pair(*token_to_push, true));
+			num_tokens_pushed++;
+		}
+
+		// child nodes are not necessarily valid attributes, so don't complain once we've recursed
+		any_parsed |= mOutputStack.back().first->submitValue(mNameStack, *this, mParseSilently);
+		
+		while(num_tokens_pushed-- > 0)
+		{
+			mNameStack.pop_back();
+		}
+	}
+	return any_parsed;
+}
+
+bool LLSimpleXUIParser::processText()
+{
+	if (!mTextContents.empty())
+	{
+		LLStringUtil::trim(mTextContents);
+		if (!mTextContents.empty())
+		{
+			mNameStack.push_back(std::make_pair(std::string("value"), true));
+			mCurAttributeValueBegin = mTextContents.c_str();
+			mOutputStack.back().first->submitValue(mNameStack, *this, mParseSilently);
+			mNameStack.pop_back();
+		}
+		mTextContents.clear();
+		return true;
+	}
+	return false;
+}
+
+/*virtual*/ std::string LLSimpleXUIParser::getCurrentElementName()
+{
+	std::string full_name;
+	for (name_stack_t::iterator it = mNameStack.begin();	
+		it != mNameStack.end();
+		++it)
+	{
+		full_name += it->first + "."; // build up dotted names: "button.param.nestedparam."
+	}
+
+	return full_name;
+}
+
+void LLSimpleXUIParser::parserWarning(const std::string& message)
+{
+#ifdef LL_WINDOWS
+	// use Visual Studo friendly formatting of output message for easy access to originating xml
+	llutf16string utf16str = utf8str_to_utf16str(llformat("%s(%d):\t%s", mCurFileName.c_str(), LINE_NUMBER_HERE, message.c_str()).c_str());
+	utf16str += '\n';
+	OutputDebugString(utf16str.c_str());
+#else
+	Parser::parserWarning(message);
+#endif
+}
+
+void LLSimpleXUIParser::parserError(const std::string& message)
+{
+#ifdef LL_WINDOWS
+	llutf16string utf16str = utf8str_to_utf16str(llformat("%s(%d):\t%s", mCurFileName.c_str(), LINE_NUMBER_HERE, message.c_str()).c_str());
+	utf16str += '\n';
+	OutputDebugString(utf16str.c_str());
+#else
+	Parser::parserError(message);
+#endif
+}
+
+bool LLSimpleXUIParser::readFlag(Parser& parser, void* val_ptr)
+{
+	LLSimpleXUIParser& self = static_cast<LLSimpleXUIParser&>(parser);
+	return self.mCurAttributeValueBegin == NO_VALUE_MARKER;
+}
+
+bool LLSimpleXUIParser::readBoolValue(Parser& parser, void* val_ptr)
+{
+	LLSimpleXUIParser& self = static_cast<LLSimpleXUIParser&>(parser);
+	if (!strcmp(self.mCurAttributeValueBegin, "true")) 
+	{
+		*((bool*)val_ptr) = true;
+		return true;
+	}
+	else if (!strcmp(self.mCurAttributeValueBegin, "false"))
+	{
+		*((bool*)val_ptr) = false;
+		return true;
+	}
+
+	return false;
+}
+
+bool LLSimpleXUIParser::readStringValue(Parser& parser, void* val_ptr)
+{
+	LLSimpleXUIParser& self = static_cast<LLSimpleXUIParser&>(parser);
+	*((std::string*)val_ptr) = self.mCurAttributeValueBegin;
+	return true;
+}
+
+bool LLSimpleXUIParser::readU8Value(Parser& parser, void* val_ptr)
+{
+	LLSimpleXUIParser& self = static_cast<LLSimpleXUIParser&>(parser);
+	return parse(self.mCurAttributeValueBegin, uint_p[assign_a(*(U8*)val_ptr)]).full;
+}
+
+bool LLSimpleXUIParser::readS8Value(Parser& parser, void* val_ptr)
+{
+	LLSimpleXUIParser& self = static_cast<LLSimpleXUIParser&>(parser);
+	return parse(self.mCurAttributeValueBegin, int_p[assign_a(*(S8*)val_ptr)]).full;
+}
+
+bool LLSimpleXUIParser::readU16Value(Parser& parser, void* val_ptr)
+{
+	LLSimpleXUIParser& self = static_cast<LLSimpleXUIParser&>(parser);
+	return parse(self.mCurAttributeValueBegin, uint_p[assign_a(*(U16*)val_ptr)]).full;
+}
+
+bool LLSimpleXUIParser::readS16Value(Parser& parser, void* val_ptr)
+{
+	LLSimpleXUIParser& self = static_cast<LLSimpleXUIParser&>(parser);
+	return parse(self.mCurAttributeValueBegin, int_p[assign_a(*(S16*)val_ptr)]).full;
+}
+
+bool LLSimpleXUIParser::readU32Value(Parser& parser, void* val_ptr)
+{
+	LLSimpleXUIParser& self = static_cast<LLSimpleXUIParser&>(parser);
+	return parse(self.mCurAttributeValueBegin, uint_p[assign_a(*(U32*)val_ptr)]).full;
+}
+
+bool LLSimpleXUIParser::readS32Value(Parser& parser, void* val_ptr)
+{
+	LLSimpleXUIParser& self = static_cast<LLSimpleXUIParser&>(parser);
+	return parse(self.mCurAttributeValueBegin, int_p[assign_a(*(S32*)val_ptr)]).full;
+}
+
+bool LLSimpleXUIParser::readF32Value(Parser& parser, void* val_ptr)
+{
+	LLSimpleXUIParser& self = static_cast<LLSimpleXUIParser&>(parser);
+	return parse(self.mCurAttributeValueBegin, real_p[assign_a(*(F32*)val_ptr)]).full;
+}
+
+bool LLSimpleXUIParser::readF64Value(Parser& parser, void* val_ptr)
+{
+	LLSimpleXUIParser& self = static_cast<LLSimpleXUIParser&>(parser);
+	return parse(self.mCurAttributeValueBegin, real_p[assign_a(*(F64*)val_ptr)]).full;
+}
+	
+bool LLSimpleXUIParser::readColor4Value(Parser& parser, void* val_ptr)
+{
+	LLSimpleXUIParser& self = static_cast<LLSimpleXUIParser&>(parser);
+	LLColor4 value;
+
+	if (parse(self.mCurAttributeValueBegin, real_p[assign_a(value.mV[0])] >> real_p[assign_a(value.mV[1])] >> real_p[assign_a(value.mV[2])] >> real_p[assign_a(value.mV[3])], space_p).full)
+	{
+		*(LLColor4*)(val_ptr) = value;
+		return true;
+	}
+	return false;
+}
+
+bool LLSimpleXUIParser::readUIColorValue(Parser& parser, void* val_ptr)
+{
+	LLSimpleXUIParser& self = static_cast<LLSimpleXUIParser&>(parser);
+	LLColor4 value;
+	LLUIColor* colorp = (LLUIColor*)val_ptr;
+
+	if (parse(self.mCurAttributeValueBegin, real_p[assign_a(value.mV[0])] >> real_p[assign_a(value.mV[1])] >> real_p[assign_a(value.mV[2])] >> real_p[assign_a(value.mV[3])], space_p).full)
+	{
+		colorp->set(value);
+		return true;
+	}
+	return false;
+}
+
+bool LLSimpleXUIParser::readUUIDValue(Parser& parser, void* val_ptr)
+{
+	LLSimpleXUIParser& self = static_cast<LLSimpleXUIParser&>(parser);
+	LLUUID temp_id;
+	// LLUUID::set is destructive, so use temporary value
+	if (temp_id.set(std::string(self.mCurAttributeValueBegin)))
+	{
+		*(LLUUID*)(val_ptr) = temp_id;
+		return true;
+	}
+	return false;
+}
+
+bool LLSimpleXUIParser::readSDValue(Parser& parser, void* val_ptr)
+{
+	LLSimpleXUIParser& self = static_cast<LLSimpleXUIParser&>(parser);
+	*((LLSD*)val_ptr) = LLSD(self.mCurAttributeValueBegin);
+	return true;
+}
diff --git a/indra/llui/llxuiparser.h b/indra/llui/llxuiparser.h
new file mode 100644
index 0000000000..d7cd256967
--- /dev/null
+++ b/indra/llui/llxuiparser.h
@@ -0,0 +1,242 @@
+/** 
+ * @file llxuiparser.h
+ * @brief Utility functions for handling XUI structures in XML
+ *
+ * $LicenseInfo:firstyear=2003&license=viewerlgpl$
+ * 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 LLXUIPARSER_H
+#define LLXUIPARSER_H
+
+#include "llinitparam.h"
+#include "llregistry.h"
+#include "llpointer.h"
+
+#include <boost/function.hpp>
+#include <iosfwd>
+#include <stack>
+#include <set>
+
+
+
+class LLView;
+
+
+typedef LLPointer<class LLXMLNode> LLXMLNodePtr;
+
+
+// lookup widget type by name
+class LLWidgetTypeRegistry
+:	public LLRegistrySingleton<std::string, const std::type_info*, LLWidgetTypeRegistry>
+{};
+
+
+// global static instance for registering all widget types
+typedef boost::function<LLView* (LLXMLNodePtr node, LLView *parent, LLXMLNodePtr output_node)> LLWidgetCreatorFunc;
+
+typedef LLRegistry<std::string, LLWidgetCreatorFunc> widget_registry_t;
+
+class LLChildRegistryRegistry
+: public LLRegistrySingleton<const std::type_info*, widget_registry_t, LLChildRegistryRegistry>
+{};
+
+
+
+class LLXSDWriter : public LLInitParam::Parser
+{
+	LOG_CLASS(LLXSDWriter);
+public:
+	void writeXSD(const std::string& name, LLXMLNodePtr node, const LLInitParam::BaseBlock& block, const std::string& xml_namespace);
+
+	/*virtual*/ std::string getCurrentElementName() { return LLStringUtil::null; }
+
+	LLXSDWriter();
+
+protected:
+	void writeAttribute(const std::string& type, const Parser::name_stack_t&, S32 min_count, S32 max_count, const std::vector<std::string>* possible_values);
+	void addAttributeToSchema(LLXMLNodePtr nodep, const std::string& attribute_name, const std::string& type, bool mandatory, const std::vector<std::string>* possible_values);
+	LLXMLNodePtr mAttributeNode;
+	LLXMLNodePtr mElementNode;
+	LLXMLNodePtr mSchemaNode;
+
+	typedef std::set<std::string> string_set_t;
+	typedef std::map<LLXMLNodePtr, string_set_t> attributes_map_t;
+	attributes_map_t	mAttributesWritten;
+};
+
+
+
+// NOTE: DOES NOT WORK YET
+// should support child widgets for XUI
+class LLXUIXSDWriter : public LLXSDWriter
+{
+public:
+	void writeXSD(const std::string& name, const std::string& path, const LLInitParam::BaseBlock& block);
+};
+
+
+class LLXUIParserImpl;
+
+class LLXUIParser : public LLInitParam::Parser
+{
+LOG_CLASS(LLXUIParser);
+
+public:
+	LLXUIParser();
+	typedef LLInitParam::Parser::name_stack_t name_stack_t;
+
+	/*virtual*/ std::string getCurrentElementName();
+	/*virtual*/ void parserWarning(const std::string& message);
+	/*virtual*/ void parserError(const std::string& message);
+
+	void readXUI(LLXMLNodePtr node, LLInitParam::BaseBlock& block, const std::string& filename = LLStringUtil::null, bool silent=false);
+	void writeXUI(LLXMLNodePtr node, const LLInitParam::BaseBlock& block, const LLInitParam::BaseBlock* diff_block = NULL);
+
+private:
+	bool readXUIImpl(LLXMLNodePtr node, LLInitParam::BaseBlock& block);
+	bool readAttributes(LLXMLNodePtr nodep, LLInitParam::BaseBlock& block);
+
+	//reader helper functions
+	static bool readFlag(Parser& parser, void* val_ptr);
+	static bool readBoolValue(Parser& parser, void* val_ptr);
+	static bool readStringValue(Parser& parser, void* val_ptr);
+	static bool readU8Value(Parser& parser, void* val_ptr);
+	static bool readS8Value(Parser& parser, void* val_ptr);
+	static bool readU16Value(Parser& parser, void* val_ptr);
+	static bool readS16Value(Parser& parser, void* val_ptr);
+	static bool readU32Value(Parser& parser, void* val_ptr);
+	static bool readS32Value(Parser& parser, void* val_ptr);
+	static bool readF32Value(Parser& parser, void* val_ptr);
+	static bool readF64Value(Parser& parser, void* val_ptr);
+	static bool readColor4Value(Parser& parser, void* val_ptr);
+	static bool readUIColorValue(Parser& parser, void* val_ptr);
+	static bool readUUIDValue(Parser& parser, void* val_ptr);
+	static bool readSDValue(Parser& parser, void* val_ptr);
+
+	//writer helper functions
+	static bool writeFlag(Parser& parser, const void* val_ptr, name_stack_t&);
+	static bool writeBoolValue(Parser& parser, const void* val_ptr, name_stack_t&);
+	static bool writeStringValue(Parser& parser, const void* val_ptr, name_stack_t&);
+	static bool writeU8Value(Parser& parser, const void* val_ptr, name_stack_t&);
+	static bool writeS8Value(Parser& parser, const void* val_ptr, name_stack_t&);
+	static bool writeU16Value(Parser& parser, const void* val_ptr, name_stack_t&);
+	static bool writeS16Value(Parser& parser, const void* val_ptr, name_stack_t&);
+	static bool writeU32Value(Parser& parser, const void* val_ptr, name_stack_t&);
+	static bool writeS32Value(Parser& parser, const void* val_ptr, name_stack_t&);
+	static bool writeF32Value(Parser& parser, const void* val_ptr, name_stack_t&);
+	static bool writeF64Value(Parser& parser, const void* val_ptr, name_stack_t&);
+	static bool writeColor4Value(Parser& parser, const void* val_ptr, name_stack_t&);
+	static bool writeUIColorValue(Parser& parser, const void* val_ptr, name_stack_t&);
+	static bool writeUUIDValue(Parser& parser, const void* val_ptr, name_stack_t&);
+	static bool writeSDValue(Parser& parser, const void* val_ptr, name_stack_t&);
+
+	LLXMLNodePtr getNode(name_stack_t& stack);
+
+private:
+	Parser::name_stack_t			mNameStack;
+	LLXMLNodePtr					mCurReadNode;
+	// Root of the widget XML sub-tree, for example, "line_editor"
+	LLXMLNodePtr					mWriteRootNode;
+	
+	typedef std::map<std::string, LLXMLNodePtr>	out_nodes_t;
+	out_nodes_t						mOutNodes;
+	LLXMLNodePtr					mLastWrittenChild;
+	S32								mCurReadDepth;
+	std::string						mCurFileName;
+	std::string						mRootNodeName;
+};
+
+// LLSimpleXUIParser is a streamlined SAX-based XUI parser that does not support localization 
+// or parsing of a tree of independent param blocks, such as child widgets.
+// Use this for reading non-localized files that only need a single param block as a result.
+//
+// NOTE: In order to support nested block parsing, we need callbacks for start element that
+// push new blocks contexts on the mScope stack.
+// NOTE: To support localization without building a DOM, we need to enforce consistent 
+// ordering of child elements from base file to localized diff file.  Then we can use a pair
+// of coroutines to perform matching of xml nodes during parsing.  Not sure if the overhead
+// of coroutines would offset the gain from SAX parsing
+class LLSimpleXUIParserImpl;
+
+class LLSimpleXUIParser : public LLInitParam::Parser
+{
+LOG_CLASS(LLSimpleXUIParser);
+public:
+	typedef LLInitParam::Parser::name_stack_t name_stack_t;
+	typedef LLInitParam::BaseBlock* (*element_start_callback_t)(LLSimpleXUIParser&, const char* block_name);
+
+	LLSimpleXUIParser(element_start_callback_t element_cb = NULL);
+	virtual ~LLSimpleXUIParser();
+
+	/*virtual*/ std::string getCurrentElementName();
+	/*virtual*/ void parserWarning(const std::string& message);
+	/*virtual*/ void parserError(const std::string& message);
+
+	bool readXUI(const std::string& filename, LLInitParam::BaseBlock& block, bool silent=false);
+
+
+private:
+	//reader helper functions
+	static bool readFlag(Parser&, void* val_ptr);
+	static bool readBoolValue(Parser&, void* val_ptr);
+	static bool readStringValue(Parser&, void* val_ptr);
+	static bool readU8Value(Parser&, void* val_ptr);
+	static bool readS8Value(Parser&, void* val_ptr);
+	static bool readU16Value(Parser&, void* val_ptr);
+	static bool readS16Value(Parser&, void* val_ptr);
+	static bool readU32Value(Parser&, void* val_ptr);
+	static bool readS32Value(Parser&, void* val_ptr);
+	static bool readF32Value(Parser&, void* val_ptr);
+	static bool readF64Value(Parser&, void* val_ptr);
+	static bool readColor4Value(Parser&, void* val_ptr);
+	static bool readUIColorValue(Parser&, void* val_ptr);
+	static bool readUUIDValue(Parser&, void* val_ptr);
+	static bool readSDValue(Parser&, void* val_ptr);
+
+private:
+	static void startElementHandler(void *userData, const char *name, const char **atts);
+	static void endElementHandler(void *userData, const char *name);
+	static void characterDataHandler(void *userData, const char *s, int len);
+
+	void startElement(const char *name, const char **atts);
+	void endElement(const char *name);
+	void characterData(const char *s, int len);
+	bool readAttributes(const char **atts);
+	bool processText();
+
+	Parser::name_stack_t			mNameStack;
+	struct XML_ParserStruct*		mParser;
+	LLXMLNodePtr					mLastWrittenChild;
+	S32								mCurReadDepth;
+	std::string						mCurFileName;
+	std::string						mTextContents;
+	const char*						mCurAttributeValueBegin;
+	std::vector<S32>				mTokenSizeStack;
+	std::vector<std::string>		mScope;
+	std::vector<bool>				mEmptyLeafNode;
+	element_start_callback_t		mElementCB;
+
+	std::vector<std::pair<LLInitParam::BaseBlock*, S32> > mOutputStack;
+};
+
+
+#endif //LLXUIPARSER_H
diff --git a/indra/llui/tests/llurlentry_stub.cpp b/indra/llui/tests/llurlentry_stub.cpp
index c75df86891..cb3b7abb14 100644
--- a/indra/llui/tests/llurlentry_stub.cpp
+++ b/indra/llui/tests/llurlentry_stub.cpp
@@ -105,28 +105,6 @@ LLStyle::Params::Params()
 
 namespace LLInitParam
 {
-	Param::Param(BaseBlock* enclosing_block)
-	:	mIsProvided(false)
-	{
-		const U8* my_addr = reinterpret_cast<const U8*>(this);
-		const U8* block_addr = reinterpret_cast<const U8*>(enclosing_block);
-		mEnclosingBlockOffset = (U16)(my_addr - block_addr);
-	}
-
-	void BaseBlock::addParam(BlockDescriptor& block_data, const ParamDescriptorPtr in_param, const char* char_name){}
-	void BaseBlock::addSynonym(Param& param, const std::string& synonym) {}
-	param_handle_t BaseBlock::getHandleFromParam(const Param* param) const {return 0;}
-	
-	void BaseBlock::init(BlockDescriptor& descriptor, BlockDescriptor& base_descriptor, size_t block_size)
-	{
-		descriptor.mCurrentBlockPtr = this;
-	}
-	bool BaseBlock::deserializeBlock(Parser& p, Parser::name_stack_range_t name_stack, bool new_name){ return true; }
-	void BaseBlock::serializeBlock(Parser& parser, Parser::name_stack_t& name_stack, const LLInitParam::BaseBlock* diff_block) const {}
-	bool BaseBlock::inspectBlock(Parser& parser, Parser::name_stack_t name_stack, S32 min_value, S32 max_value) const { return true; }
-	bool BaseBlock::mergeBlock(BlockDescriptor& block_data, const BaseBlock& other, bool overwrite) { return true; }
-	bool BaseBlock::validateBlock(bool emit_errors) const { return true; }
-
 	ParamValue<LLUIColor, TypeValues<LLUIColor> >::ParamValue(const LLUIColor& color)
 	:	super_t(color)
 	{}
diff --git a/indra/llui/tests/llurlentry_test.cpp b/indra/llui/tests/llurlentry_test.cpp
index c1fb050206..8f0a48018f 100644
--- a/indra/llui/tests/llurlentry_test.cpp
+++ b/indra/llui/tests/llurlentry_test.cpp
@@ -70,21 +70,6 @@ S32 LLUIImage::getHeight() const
 	return 0;
 }
 
-namespace LLInitParam
-{
-	BlockDescriptor::BlockDescriptor() {}
-	ParamDescriptor::ParamDescriptor(param_handle_t p, 
-						merge_func_t merge_func, 
-						deserialize_func_t deserialize_func, 
-						serialize_func_t serialize_func,
-						validation_func_t validation_func,
-						inspect_func_t inspect_func,
-						S32 min_count,
-						S32 max_count){}
-	ParamDescriptor::~ParamDescriptor() {}
-
-}
-
 namespace tut
 {
 	struct LLUrlEntryData
diff --git a/indra/llui/tests/llurlmatch_test.cpp b/indra/llui/tests/llurlmatch_test.cpp
index 7183413463..963473c92a 100644
--- a/indra/llui/tests/llurlmatch_test.cpp
+++ b/indra/llui/tests/llurlmatch_test.cpp
@@ -63,40 +63,6 @@ S32 LLUIImage::getHeight() const
 
 namespace LLInitParam
 {
-	BlockDescriptor::BlockDescriptor() {}
-	ParamDescriptor::ParamDescriptor(param_handle_t p, 
-						merge_func_t merge_func, 
-						deserialize_func_t deserialize_func, 
-						serialize_func_t serialize_func,
-						validation_func_t validation_func,
-						inspect_func_t inspect_func,
-						S32 min_count,
-						S32 max_count){}
-	ParamDescriptor::~ParamDescriptor() {}
-
-	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) {}
-
-	void BaseBlock::init(BlockDescriptor& descriptor, BlockDescriptor& base_descriptor, size_t block_size)
-	{
-		descriptor.mCurrentBlockPtr = this;
-	}
-
-	Param::Param(BaseBlock* enclosing_block)
-	:	mIsProvided(false)
-	{
-		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));
-	}
-
-	bool BaseBlock::deserializeBlock(Parser& p, Parser::name_stack_range_t name_stack, bool new_name){ return true; }
-	void BaseBlock::serializeBlock(Parser& parser, Parser::name_stack_t& name_stack, const LLInitParam::BaseBlock* diff_block) const {}
-	bool BaseBlock::inspectBlock(Parser& parser, Parser::name_stack_t name_stack, S32 min_count, S32 max_count) const { return true; }
-	bool BaseBlock::mergeBlock(BlockDescriptor& block_data, const BaseBlock& other, bool overwrite) { return true; }
-	bool BaseBlock::validateBlock(bool emit_errors) const { return true; }
-
 	ParamValue<LLUIColor, TypeValues<LLUIColor> >::ParamValue(const LLUIColor& color)
 	:	super_t(color)
 	{}