Pull and merge from ssh://hg@bitbucket.org/lindenlab/viewer-development.

15 files changed, 541 insertions, 379 deletions

diff --git a/indra/llui/llclipboard.cpp b/indra/llui/llclipboard.cpp
index 6910b962a1..14173fdbb0 100644
--- a/indra/llui/llclipboard.cpp
+++ b/indra/llui/llclipboard.cpp
@@ -34,109 +34,113 @@
 #include "llview.h"
 #include "llwindow.h"
 
-// Global singleton
-LLClipboard gClipboard;
-
-
-LLClipboard::LLClipboard()
+LLClipboard::LLClipboard() :
+	mGeneration(0)
 {
-	mSourceItem = NULL;
+	reset();
 }
 
-
 LLClipboard::~LLClipboard()
 {
+	reset();
 }
 
-
-void LLClipboard::copyFromSubstring(const LLWString &src, S32 pos, S32 len, const LLUUID& source_id )
+void LLClipboard::reset()
 {
-	mSourceID = source_id;
-	mString = src.substr(pos, len);
-	LLView::getWindow()->copyTextToClipboard( mString );
+	// Increment the clipboard count
+	mGeneration++;
+	// Clear the clipboard
+	mObjects.clear();
+	mCutMode = false;
+	mString = LLWString();
 }
 
-void LLClipboard::copyFromString(const LLWString &src, const LLUUID& source_id )
+// Copy the input uuid to the LL clipboard
+bool LLClipboard::copyToClipboard(const LLUUID& src, const LLAssetType::EType type)
 {
-	mSourceID = source_id;
-	mString = src;
-	LLView::getWindow()->copyTextToClipboard( mString );
+	reset();
+	return addToClipboard(src, type);
 }
 
-const LLWString& LLClipboard::getPasteWString( LLUUID* source_id )
+// Add the input uuid to the LL clipboard
+// Convert the uuid to string and concatenate that string to the system clipboard if legit
+bool LLClipboard::addToClipboard(const LLUUID& src, const LLAssetType::EType type)
 {
-	if( mSourceID.notNull() )
+	bool res = false;
+	if (src.notNull())
 	{
-		LLWString temp_string;
-		LLView::getWindow()->pasteTextFromClipboard(temp_string);
-
-		if( temp_string != mString )
+		res = true;
+		if (LLAssetType::lookupIsAssetIDKnowable(type))
 		{
-			mSourceID.setNull();
-			mString = temp_string;
+			LLWString source = utf8str_to_wstring(src.asString());
+			res = addToClipboard(source, 0, source.size());
+		}
+		if (res)
+		{
+			mObjects.push_back(src);
+			mGeneration++;
 		}
 	}
-	else
-	{
-		LLView::getWindow()->pasteTextFromClipboard(mString);
-	}
+	return res;
+}
 
-	if( source_id )
+bool LLClipboard::pasteFromClipboard(std::vector<LLUUID>& inv_objects) const
+{
+	bool res = false;
+	S32 count = mObjects.size();
+	if (count > 0)
 	{
-		*source_id = mSourceID;
+		res = true;
+		inv_objects.clear();
+		for (S32 i = 0; i < count; i++)
+		{
+			inv_objects.push_back(mObjects[i]);
+		}
 	}
-
-	return mString;
+	return res;
 }
 
+// Returns true if the LL Clipboard has pasteable items in it
+bool LLClipboard::hasContents() const
+{
+	return (mObjects.size() > 0);
+}
 
-BOOL LLClipboard::canPasteString() const
+// Returns true if the input uuid is in the list of clipboard objects
+bool LLClipboard::isOnClipboard(const LLUUID& object) const
 {
-	return LLView::getWindow()->isClipboardTextAvailable();
+	std::vector<LLUUID>::const_iterator iter = std::find(mObjects.begin(), mObjects.end(), object);
+	return (iter != mObjects.end());
 }
 
+// Copy the input string to the LL and the system clipboard
+bool LLClipboard::copyToClipboard(const LLWString &src, S32 pos, S32 len, bool use_primary)
+{
+	return addToClipboard(src, pos, len, use_primary);
+}
 
-void LLClipboard::copyFromPrimarySubstring(const LLWString &src, S32 pos, S32 len, const LLUUID& source_id )
+// Concatenate the input string to the LL and the system clipboard
+bool LLClipboard::addToClipboard(const LLWString &src, S32 pos, S32 len, bool use_primary)
 {
-	mSourceID = source_id;
 	mString = src.substr(pos, len);
-	LLView::getWindow()->copyTextToPrimary( mString );
+	return (use_primary ? LLView::getWindow()->copyTextToPrimary(mString) : LLView::getWindow()->copyTextToClipboard(mString));
 }
 
-
-const LLWString& LLClipboard::getPastePrimaryWString( LLUUID* source_id )
+// Copy the System clipboard to the output string.
+// Manage the LL Clipboard / System clipboard consistency
+bool LLClipboard::pasteFromClipboard(LLWString &dst, bool use_primary)
 {
-	if( mSourceID.notNull() )
-	{
-		LLWString temp_string;
-		LLView::getWindow()->pasteTextFromPrimary(temp_string);
-
-		if( temp_string != mString )
-		{
-			mSourceID.setNull();
-			mString = temp_string;
-		}
-	}
-	else
-	{
-		LLView::getWindow()->pasteTextFromPrimary(mString);
-	}
-
-	if( source_id )
+	bool res = (use_primary ? LLView::getWindow()->pasteTextFromPrimary(dst) : LLView::getWindow()->pasteTextFromClipboard(dst));
+	if (res)
 	{
-		*source_id = mSourceID;
+		mString = dst;
 	}
-
-	return mString;
+	return res;
 }
 
-
-BOOL LLClipboard::canPastePrimaryString() const
+// Return true if there's something on the System clipboard
+bool LLClipboard::isTextAvailable(bool use_primary) const
 {
-	return LLView::getWindow()->isPrimaryTextAvailable();
+	return (use_primary ? LLView::getWindow()->isPrimaryTextAvailable() : LLView::getWindow()->isClipboardTextAvailable());
 }
 
-void LLClipboard::setSourceObject(const LLUUID& source_id, LLAssetType::EType type) 
-{
-	mSourceItem = new LLInventoryObject (source_id, LLUUID::null, type, "");
-}
diff --git a/indra/llui/llclipboard.h b/indra/llui/llclipboard.h
index 9371b94284..fd2e7610df 100644
--- a/indra/llui/llclipboard.h
+++ b/indra/llui/llclipboard.h
@@ -27,46 +27,68 @@
 #ifndef LL_LLCLIPBOARD_H
 #define LL_LLCLIPBOARD_H
 
+#include <boost/function.hpp>
 
 #include "llstring.h"
 #include "lluuid.h"
 #include "stdenums.h"
+#include "llsingleton.h"
+#include "llassettype.h"
 #include "llinventory.h"
 
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+// Class LLClipboard
+//
+// This class is used to cut/copy/paste text strings and inventory items around 
+// the world. Use LLClipboard::instance().method() to use its methods.
+// Note that the text and UUIDs are loosely coupled only. There are few cases
+// where the viewer does offer a serialized version of the UUID on the clipboard.
+// In those case, the text is overridden when copying/cutting the item. 
+// In all other cases, the text and the UUIDs are very much independent.
+//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-class LLClipboard
+class LLClipboard : public LLSingleton<LLClipboard>
 {
 public:
 	LLClipboard();
 	~LLClipboard();
+	
+	// Clears the clipboard
+	void reset();
+	// Returns the state of the clipboard so client can know if it has been modified (comparing with tracked state)
+	int	getGeneration() const { return mGeneration; }
 
-	/* We support two flavors of clipboard.  The default is the explicitly
-	   copy-and-pasted clipboard.  The second is the so-called 'primary' clipboard
-	   which is implicitly copied upon selection on platforms which expect this
-	   (i.e. X11/Linux). */
-
-	void		copyFromSubstring(const LLWString &copy_from, S32 pos, S32 len, const LLUUID& source_id = LLUUID::null );
-	void		copyFromString(const LLWString &copy_from, const LLUUID& source_id = LLUUID::null );
-	BOOL		canPasteString() const;
-	const LLWString&	getPasteWString(LLUUID* source_id = NULL);
+	// Text strings management:
+	// ------------------------
+	// We support two flavors of text clipboards. The default is the explicitly
+	// copy-and-pasted clipboard. The second is the so-called 'primary' clipboard
+	// which is implicitly copied upon selection on platforms which expect this
+	// (i.e. X11/Linux, Mac).
+	bool copyToClipboard(const LLWString& src, S32 pos, S32 len, bool use_primary = false);
+	bool addToClipboard(const LLWString& src, S32 pos, S32 len, bool use_primary = false);
+	bool pasteFromClipboard(LLWString& dst, bool use_primary = false);
+	bool isTextAvailable(bool use_primary = false) const;
+	
+	// Object list management:
+	// -----------------------
+	// Clears and adds one single object to the clipboard
+	bool copyToClipboard(const LLUUID& src, const LLAssetType::EType type = LLAssetType::AT_NONE);
+	// Adds one object to the current list of objects on the clipboard
+	bool addToClipboard(const LLUUID& src, const LLAssetType::EType type = LLAssetType::AT_NONE);
+	// Gets a copy of the objects on the clipboard
+	bool pasteFromClipboard(std::vector<LLUUID>& inventory_objects) const;
+	
+	bool hasContents() const;										// True if the clipboard has pasteable objects
+	bool isOnClipboard(const LLUUID& object) const;					// True if the input object uuid is on the clipboard
 
-	void		copyFromPrimarySubstring(const LLWString &copy_from, S32 pos, S32 len, const LLUUID& source_id = LLUUID::null );
-	BOOL		canPastePrimaryString() const;
-	const LLWString&	getPastePrimaryWString(LLUUID* source_id = NULL);	
+	bool isCutMode() const { return mCutMode; }
+	void setCutMode(bool mode) { mCutMode = mode; mGeneration++; }
 
-	// Support clipboard for object known only by their uuid and asset type
-	void		  setSourceObject(const LLUUID& source_id, LLAssetType::EType type);
-	const LLInventoryObject* getSourceObject() { return mSourceItem; }
-	
 private:
-	LLUUID      mSourceID;
-	LLWString	mString;
-	LLInventoryObject* mSourceItem;
+	std::vector<LLUUID> mObjects;		// Objects on the clipboard. Can be empty while mString contains something licit (e.g. text from chat)
+	LLWString mString;					// The text string. If mObjects is not empty, this string is reflecting them (UUIDs for the moment) if the asset type is knowable.
+	bool mCutMode;						// This is a convenience flag for the viewer.
+	int mGeneration;					// Incremented when the clipboard changes so that interested parties can check for changes on the clipboard.	
 };
 
-
-// Global singleton
-extern LLClipboard gClipboard;
-
-
 #endif  // LL_LLCLIPBOARD_H
diff --git a/indra/llui/llfloater.cpp b/indra/llui/llfloater.cpp
index 22b20969fc..a8a3a1f906 100644
--- a/indra/llui/llfloater.cpp
+++ b/indra/llui/llfloater.cpp
@@ -68,10 +68,10 @@ namespace LLInitParam
 {
 	void TypeValues<LLFloaterEnums::EOpenPositioning>::declareValues()
 	{
-		declare("none",       LLFloaterEnums::OPEN_POSITIONING_NONE);
-		declare("cascading",  LLFloaterEnums::OPEN_POSITIONING_CASCADING);
-		declare("centered",   LLFloaterEnums::OPEN_POSITIONING_CENTERED);
-		declare("specified",  LLFloaterEnums::OPEN_POSITIONING_SPECIFIED);
+		declare("relative",   LLFloaterEnums::POSITIONING_RELATIVE);
+		declare("cascading",  LLFloaterEnums::POSITIONING_CASCADING);
+		declare("centered",   LLFloaterEnums::POSITIONING_CENTERED);
+		declare("specified",  LLFloaterEnums::POSITIONING_SPECIFIED);
 	}
 }
 
@@ -177,9 +177,7 @@ LLFloater::Params::Params()
 	save_visibility("save_visibility", false),
 	can_dock("can_dock", false),
 	show_title("show_title", true),
-	open_positioning("open_positioning", LLFloaterEnums::OPEN_POSITIONING_NONE),
-	specified_left("specified_left"),
-	specified_bottom("specified_bottom"),
+	positioning("positioning", LLFloaterEnums::POSITIONING_RELATIVE),
 	header_height("header_height", 0),
 	legacy_header_height("legacy_header_height", 0),
 	close_image("close_image"),
@@ -249,9 +247,7 @@ LLFloater::LLFloater(const LLSD& key, const LLFloater::Params& p)
 	mCanClose(p.can_close),
 	mDragOnLeft(p.can_drag_on_left),
 	mResizable(p.can_resize),
-	mOpenPositioning(p.open_positioning),
-	mSpecifiedLeft(p.specified_left),
-	mSpecifiedBottom(p.specified_bottom),
+	mPositioning(p.positioning),
 	mMinWidth(p.min_width),
 	mMinHeight(p.min_height),
 	mHeaderHeight(p.header_height),
@@ -547,10 +543,18 @@ LLFloater::~LLFloater()
 
 void LLFloater::storeRectControl()
 {
-	if( mRectControl.size() > 1 )
+	if (!mRectControl.empty())
 	{
 		getControlGroup()->setRect( mRectControl, getRect() );
 	}
+	if (!mPosXControl.empty() && mPositioning == LLFloaterEnums::POSITIONING_RELATIVE)
+	{
+		getControlGroup()->setF32( mPosXControl, mPosition.mX );
+	}
+	if (!mPosYControl.empty() && mPositioning == LLFloaterEnums::POSITIONING_RELATIVE)
+	{
+		getControlGroup()->setF32( mPosYControl, mPosition.mY );
+	}
 }
 
 void LLFloater::storeVisibilityControl()
@@ -569,23 +573,6 @@ void LLFloater::storeDockStateControl()
 	}
 }
 
-LLRect LLFloater::getSavedRect() const
-{
-	LLRect rect;
-
-	if (mRectControl.size() > 1)
-	{
-		rect = getControlGroup()->getRect(mRectControl);
-	}
-
-	return rect;
-}
-
-bool LLFloater::hasSavedRect() const
-{
-	return !getSavedRect().isEmpty();
-}
-
 // static
 std::string LLFloater::getControlName(const std::string& name, const LLSD& key)
 {
@@ -863,7 +850,7 @@ void LLFloater::applyControlsAndPosition(LLFloater* other)
 	{
 		if (!applyRectControl())
 		{
-			applyPositioning(other);
+			applyPositioning(other, true);
 		}
 	}
 }
@@ -872,29 +859,68 @@ bool LLFloater::applyRectControl()
 {
 	bool saved_rect = false;
 
+	LLRect screen_rect = calcScreenRect();
+	mPosition = LLCoordGL(screen_rect.getCenterX(), screen_rect.getCenterY()).convert();
+	
 	LLFloater* last_in_group = LLFloaterReg::getLastFloaterInGroup(mInstanceName);
 	if (last_in_group && last_in_group != this)
 	{
 		// other floaters in our group, position ourselves relative to them and don't save the rect
 		mRectControl.clear();
-		mOpenPositioning = LLFloaterEnums::OPEN_POSITIONING_CASCADE_GROUP;
+		mPositioning = LLFloaterEnums::POSITIONING_CASCADE_GROUP;
 	}
-	else if (mRectControl.size() > 1)
+	else
 	{
-		// If we have a saved rect, use it
-		const LLRect& rect = getControlGroup()->getRect(mRectControl);
-		saved_rect = rect.notEmpty();
-		if (saved_rect)
+		bool rect_specified = false;
+		if (!mRectControl.empty())
 		{
-			setOrigin(rect.mLeft, rect.mBottom);
-
-			if (mResizable)
+			// If we have a saved rect, use it
+			const LLRect& rect = getControlGroup()->getRect(mRectControl);
+			if (rect.notEmpty()) saved_rect = true;
+			if (saved_rect)
 			{
-				reshape(llmax(mMinWidth, rect.getWidth()), llmax(mMinHeight, rect.getHeight()));
+				setOrigin(rect.mLeft, rect.mBottom);
+
+				if (mResizable)
+				{
+					reshape(llmax(mMinWidth, rect.getWidth()), llmax(mMinHeight, rect.getHeight()));
+				}
+				mPositioning = LLFloaterEnums::POSITIONING_RELATIVE;
+				LLRect screen_rect = calcScreenRect();
+				mPosition = LLCoordGL(screen_rect.getCenterX(), screen_rect.getCenterY()).convert();
+				rect_specified = true;
 			}
 		}
+
+		LLControlVariablePtr x_control = getControlGroup()->getControl(mPosXControl);
+		LLControlVariablePtr y_control = getControlGroup()->getControl(mPosYControl);
+		if (x_control.notNull() 
+			&& y_control.notNull()
+			&& !x_control->isDefault()
+			&& !y_control->isDefault())
+		{
+			mPosition.mX = x_control->getValue().asReal();
+			mPosition.mY = y_control->getValue().asReal();
+			mPositioning = LLFloaterEnums::POSITIONING_RELATIVE;
+			applyRelativePosition();
+
+			saved_rect = true;
+		}
+
+		// remember updated position
+		if (rect_specified)
+		{
+			storeRectControl();
+		}
+	}
+
+	if (saved_rect)
+	{
+		// propagate any derived positioning data back to settings file
+		storeRectControl();
 	}
 
+
 	return saved_rect;
 }
 
@@ -911,50 +937,56 @@ bool LLFloater::applyDockState()
 	return docked;
 }
 
-void LLFloater::applyPositioning(LLFloater* other)
+void LLFloater::applyPositioning(LLFloater* other, bool on_open)
 {
 	// Otherwise position according to the positioning code
-	switch (mOpenPositioning)
+	switch (mPositioning)
 	{
-	case LLFloaterEnums::OPEN_POSITIONING_CENTERED:
+	case LLFloaterEnums::POSITIONING_CENTERED:
 		center();
 		break;
 
-	case LLFloaterEnums::OPEN_POSITIONING_SPECIFIED:
-		{
-			// Translate relative to snap rect
-			setOrigin(mSpecifiedLeft, mSpecifiedBottom);
-			const LLRect& snap_rect = gFloaterView->getSnapRect();
-			translate(snap_rect.mLeft, snap_rect.mBottom);
-			translateIntoRect(snap_rect);
-		}
+	case LLFloaterEnums::POSITIONING_SPECIFIED:
 		break;
 
-	case LLFloaterEnums::OPEN_POSITIONING_CASCADE_GROUP:
-	case LLFloaterEnums::OPEN_POSITIONING_CASCADING:
-		if (other != NULL && other != this)
+	case LLFloaterEnums::POSITIONING_CASCADING:
+		if (!on_open)
 		{
-			stackWith(*other);
+			applyRelativePosition();
 		}
-		else
+		// fall through
+	case LLFloaterEnums::POSITIONING_CASCADE_GROUP:
+		if (on_open)
 		{
-			static const U32 CASCADING_FLOATER_HOFFSET = 0;
-			static const U32 CASCADING_FLOATER_VOFFSET = 0;
+			if (other != NULL && other != this)
+			{
+				stackWith(*other);
+			}
+			else
+			{
+				static const U32 CASCADING_FLOATER_HOFFSET = 0;
+				static const U32 CASCADING_FLOATER_VOFFSET = 0;
 			
-			const LLRect& snap_rect = gFloaterView->getSnapRect();
+				const LLRect& snap_rect = gFloaterView->getSnapRect();
 
-			const S32 horizontal_offset = CASCADING_FLOATER_HOFFSET;
-			const S32 vertical_offset = snap_rect.getHeight() - CASCADING_FLOATER_VOFFSET;
+				const S32 horizontal_offset = CASCADING_FLOATER_HOFFSET;
+				const S32 vertical_offset = snap_rect.getHeight() - CASCADING_FLOATER_VOFFSET;
 
-			S32 rect_height = getRect().getHeight();
-			setOrigin(horizontal_offset, vertical_offset - rect_height);
+				S32 rect_height = getRect().getHeight();
+				setOrigin(horizontal_offset, vertical_offset - rect_height);
 
-			translate(snap_rect.mLeft, snap_rect.mBottom);
-			translateIntoRect(snap_rect);
+				translate(snap_rect.mLeft, snap_rect.mBottom);
+			}
+			setFollows(FOLLOWS_TOP | FOLLOWS_LEFT);
 		}
 		break;
 
-	case LLFloaterEnums::OPEN_POSITIONING_NONE:
+	case LLFloaterEnums::POSITIONING_RELATIVE:
+		{
+			applyRelativePosition();
+
+			break;
+		}
 	default:
 		// Do nothing
 		break;
@@ -1072,7 +1104,9 @@ void LLFloater::handleReshape(const LLRect& new_rect, bool by_user)
 	if (by_user && !isMinimized())
 	{
 		storeRectControl();
-		mOpenPositioning = LLFloaterEnums::OPEN_POSITIONING_NONE;
+		mPositioning = LLFloaterEnums::POSITIONING_RELATIVE;
+		LLRect screen_rect = calcScreenRect();
+		mPosition = LLCoordGL(screen_rect.getCenterX(), screen_rect.getCenterY()).convert();
 	}
 
 	// if not minimized, adjust all snapped dependents to new shape
@@ -1250,6 +1284,7 @@ void LLFloater::setMinimized(BOOL minimize)
 
 		// Reshape *after* setting mMinimized
 		reshape( mExpandedRect.getWidth(), mExpandedRect.getHeight(), TRUE );
+		applyPositioning(NULL, false);
 	}
 
 	make_ui_sound("UISndWindowClose");
@@ -1590,7 +1625,7 @@ void LLFloater::setDocked(bool docked, bool pop_on_undock)
 		if (mDocked)
 		{
 			setMinimized(FALSE);
-			mOpenPositioning = LLFloaterEnums::OPEN_POSITIONING_NONE;
+			mPositioning = LLFloaterEnums::POSITIONING_RELATIVE;
 		}
 
 		updateTitleButtons();
@@ -1624,7 +1659,7 @@ void LLFloater::onClickTearOff(LLFloater* self)
 		self->openFloater(self->getKey());
 		
 		// only force position for floaters that don't have that data saved
-		if (self->mRectControl.size() <= 1)
+		if (self->mRectControl.empty())
 		{
 			new_rect.setLeftTopAndSize(host_floater->getRect().mLeft + 5, host_floater->getRect().mTop - floater_header_size - 5, self->getRect().getWidth(), self->getRect().getHeight());
 			self->setRect(new_rect);
@@ -2164,19 +2199,14 @@ LLFloaterView::LLFloaterView (const Params& p)
 	mSnapOffsetBottom(0),
 	mSnapOffsetRight(0)
 {
+	mSnapView = getHandle();
 }
 
 // By default, adjust vertical.
 void LLFloaterView::reshape(S32 width, S32 height, BOOL called_from_parent)
 {
-	S32 old_right = mLastSnapRect.mRight;
-	S32 old_top = mLastSnapRect.mTop;
-
 	LLView::reshape(width, height, called_from_parent);
 
-	S32 new_right = getSnapRect().mRight;
-	S32 new_top = getSnapRect().mTop;
-
 	mLastSnapRect = getSnapRect();
 
 	for ( child_list_const_iter_t child_it = getChildList()->begin(); child_it != getChildList()->end(); ++child_it)
@@ -2189,35 +2219,39 @@ void LLFloaterView::reshape(S32 width, S32 height, BOOL called_from_parent)
 			continue;
 		}
 
-		if (!floaterp->isMinimized())
+		if (!floaterp->isMinimized() && floaterp->getCanDrag())
 		{
-			LLRect r = floaterp->getRect();
+			LLRect old_rect = floaterp->getRect();
+			floaterp->applyPositioning(NULL, false);
+			LLRect new_rect = floaterp->getRect();
 
-			// Compute absolute distance from each edge of screen
-			S32 left_offset = llabs(r.mLeft - 0);
-			S32 right_offset = llabs(old_right - r.mRight);
+			//LLRect r = floaterp->getRect();
 
-			S32 top_offset = llabs(old_top - r.mTop);
-			S32 bottom_offset = llabs(r.mBottom - 0);
+			//// Compute absolute distance from each edge of screen
+			//S32 left_offset = llabs(r.mLeft - 0);
+			//S32 right_offset = llabs(old_right - r.mRight);
 
-			S32 translate_x = 0;
-			S32 translate_y = 0;
+			//S32 top_offset = llabs(old_top - r.mTop);
+			//S32 bottom_offset = llabs(r.mBottom - 0);
 
-			if (left_offset > right_offset)
-			{
-				translate_x = new_right - old_right;
-			}
+			S32 translate_x = new_rect.mLeft - old_rect.mLeft;
+			S32 translate_y = new_rect.mBottom - old_rect.mBottom;
 
-			if (top_offset < bottom_offset)
-			{
-				translate_y = new_top - old_top;
-			}
+			//if (left_offset > right_offset)
+			//{
+			//	translate_x = new_right - old_right;
+			//}
+
+			//if (top_offset < bottom_offset)
+			//{
+			//	translate_y = new_top - old_top;
+			//}
 
 			// don't reposition immovable floaters
-			if (floaterp->getCanDrag())
-			{
-				floaterp->translate(translate_x, translate_y);
-			}
+			//if (floaterp->getCanDrag())
+			//{
+			//	floaterp->translate(translate_x, translate_y);
+			//}
 			BOOST_FOREACH(LLHandle<LLFloater> dependent_floater, floaterp->mDependents)
 			{
 				if (dependent_floater.get())
@@ -2913,9 +2947,11 @@ void LLFloater::setInstanceName(const std::string& name)
 		std::string ctrl_name = getControlName(mInstanceName, mKey);
 
 		// save_rect and save_visibility only apply to registered floaters
-		if (!mRectControl.empty())
+		if (mSaveRect)
 		{
 			mRectControl = LLFloaterReg::declareRectControl(ctrl_name);
+			mPosXControl = LLFloaterReg::declarePosXControl(ctrl_name);
+			mPosYControl = LLFloaterReg::declarePosYControl(ctrl_name);
 		}
 		if (!mVisibilityControl.empty())
 		{
@@ -2972,7 +3008,10 @@ void LLFloater::initFromParams(const LLFloater::Params& p)
 	LLPanel::initFromParams(p);
 
 	// override any follows flags
-	setFollows(FOLLOWS_NONE);
+	if (mPositioning != LLFloaterEnums::POSITIONING_SPECIFIED)
+	{
+		setFollows(FOLLOWS_NONE);
+	}
 
 	mTitle = p.title;
 	mShortTitle = p.short_title;
@@ -2991,14 +3030,9 @@ void LLFloater::initFromParams(const LLFloater::Params& p)
 	mSingleInstance = p.single_instance;
 	mReuseInstance = p.reuse_instance.isProvided() ? p.reuse_instance : p.single_instance;
 
-	mOpenPositioning = p.open_positioning;
-	mSpecifiedLeft = p.specified_left;
-	mSpecifiedBottom = p.specified_bottom;
+	mPositioning = p.positioning;
 
-	if (p.save_rect && mRectControl.empty())
-	{
-		mRectControl = "t"; // flag to build mRectControl name once mInstanceName is set
-	}
+	mSaveRect = p.save_rect;
 	if (p.save_visibility)
 	{
 		mVisibilityControl = "t"; // flag to build mVisibilityControl name once mInstanceName is set
@@ -3113,7 +3147,7 @@ bool LLFloater::initFloaterXML(LLXMLNodePtr node, LLView *parent, const std::str
 		params.rect.left.set(0);
 	}
 	params.from_xui = true;
-	applyXUILayout(params, parent);
+	applyXUILayout(params, parent, parent == gFloaterView ? gFloaterView->getSnapRect() : parent->getLocalRect());
  	initFromParams(params);
 
 	initFloater(params);
@@ -3272,8 +3306,24 @@ void LLFloater::stackWith(LLFloater& other)
 	next_rect.setLeftTopAndSize(next_rect.mLeft, next_rect.mTop, getRect().getWidth(), getRect().getHeight());
 	
 	setShape(next_rect);
+
+	other.mPositioning = LLFloaterEnums::POSITIONING_CASCADE_GROUP;
+	other.setFollows(FOLLOWS_LEFT | FOLLOWS_TOP);
 }
 
+void LLFloater::applyRelativePosition()
+{
+	LLRect snap_rect = gFloaterView->getSnapRect();
+	LLRect floater_view_screen_rect = gFloaterView->calcScreenRect();
+	snap_rect.translate(floater_view_screen_rect.mLeft, floater_view_screen_rect.mBottom);
+	LLRect floater_screen_rect = calcScreenRect();
+
+	LLCoordGL new_center = mPosition.convert();
+	LLCoordGL cur_center(floater_screen_rect.getCenterX(), floater_screen_rect.getCenterY());
+	translate(new_center.mX - cur_center.mX, new_center.mY - cur_center.mY);
+}
+
+
 LLCoordFloater::LLCoordFloater(F32 x, F32 y, LLFloater& floater)
 :	coord_t((S32)x, (S32)y)
 {
@@ -3306,9 +3356,12 @@ bool LLCoordFloater::operator==(const LLCoordFloater& other) const
 
 LLCoordCommon LL_COORD_FLOATER::convertToCommon() const
 {
-	const LLCoordFloater& self = static_cast<const LLCoordFloater&>(*this);
+	const LLCoordFloater& self = static_cast<const LLCoordFloater&>(LLCoordFloater::getTypedCoords(*this));
 
 	LLRect snap_rect = gFloaterView->getSnapRect();
+	LLRect floater_view_screen_rect = gFloaterView->calcScreenRect();
+	snap_rect.translate(floater_view_screen_rect.mLeft, floater_view_screen_rect.mBottom);
+
 	LLFloater* floaterp = mFloater.get();
 	S32 floater_width = floaterp ? floaterp->getRect().getWidth() : 0;
 	S32 floater_height = floaterp ? floaterp->getRect().getHeight() : 0;
@@ -3348,8 +3401,12 @@ LLCoordCommon LL_COORD_FLOATER::convertToCommon() const
 
 void LL_COORD_FLOATER::convertFromCommon(const LLCoordCommon& from)
 {
-	LLCoordFloater& self = static_cast<LLCoordFloater&>(*this);
+	LLCoordFloater& self = static_cast<LLCoordFloater&>(LLCoordFloater::getTypedCoords(*this));
 	LLRect snap_rect = gFloaterView->getSnapRect();
+	LLRect floater_view_screen_rect = gFloaterView->calcScreenRect();
+	snap_rect.translate(floater_view_screen_rect.mLeft, floater_view_screen_rect.mBottom);
+
+
 	LLFloater* floaterp = mFloater.get();
 	S32 floater_width = floaterp ? floaterp->getRect().getWidth() : 0;
 	S32 floater_height = floaterp ? floaterp->getRect().getHeight() : 0;
diff --git a/indra/llui/llfloater.h b/indra/llui/llfloater.h
index a7cc9ae961..64d6dcea04 100644
--- a/indra/llui/llfloater.h
+++ b/indra/llui/llfloater.h
@@ -64,12 +64,12 @@ namespace LLFloaterEnums
 {
 	enum EOpenPositioning
 	{
-		OPEN_POSITIONING_NONE,
-		OPEN_POSITIONING_CASCADING,
-		OPEN_POSITIONING_CASCADE_GROUP,
-		OPEN_POSITIONING_CENTERED,
-		OPEN_POSITIONING_SPECIFIED,
-		OPEN_POSITIONING_COUNT
+		POSITIONING_RELATIVE,
+		POSITIONING_CASCADING,
+		POSITIONING_CASCADE_GROUP,
+		POSITIONING_CENTERED,
+		POSITIONING_SPECIFIED,
+		POSITIONING_COUNT
 	};
 }
 
@@ -163,10 +163,7 @@ public:
 								can_dock,
 								show_title;
 		
-		Optional<LLFloaterEnums::EOpenPositioning>	open_positioning;
-		Optional<S32>								specified_left;
-		Optional<S32>								specified_bottom;
-
+		Optional<LLFloaterEnums::EOpenPositioning>	positioning;
 		
 		Optional<S32>			header_height,
 								legacy_header_height; // HACK see initFromXML()
@@ -272,8 +269,6 @@ public:
 	BOOL			isResizable() const				{ return mResizable; }
 	void			setResizeLimits( S32 min_width, S32 min_height );
 	void			getResizeLimits( S32* min_width, S32* min_height ) { *min_width = mMinWidth; *min_height = mMinHeight; }
-	LLRect			getSavedRect() const;
-	bool			hasSavedRect() const;
 
 	static std::string		getControlName(const std::string& name, const LLSD& key);
 	static LLControlGroup*	getControlGroup();
@@ -355,7 +350,7 @@ public:
 		
 	void			enableResizeCtrls(bool enable, bool width = true, bool height = true);
 
-	bool			isPositioning(LLFloaterEnums::EOpenPositioning p) const { return (p == mOpenPositioning); }
+	bool			isPositioning(LLFloaterEnums::EOpenPositioning p) const { return (p == mPositioning); }
 protected:
 	void			applyControlsAndPosition(LLFloater* other);
 
@@ -363,7 +358,9 @@ protected:
 
 	virtual bool	applyRectControl();
 	bool			applyDockState();
-	void			applyPositioning(LLFloater* other);
+	void			applyPositioning(LLFloater* other, bool on_open);
+	void			applyRelativePosition();
+
 	void			storeRectControl();
 	void			storeVisibilityControl();
 	void			storeDockStateControl();
@@ -427,7 +424,10 @@ public:
 	commit_signal_t* mMinimizeSignal;
 
 protected:
+	bool			mSaveRect;
 	std::string		mRectControl;
+	std::string		mPosXControl;
+	std::string		mPosYControl;
 	std::string		mVisibilityControl;
 	std::string		mDocStateControl;
 	LLSD			mKey;				// Key used for retrieving instances; set (for now) by LLFLoaterReg
@@ -453,9 +453,7 @@ private:
 	BOOL			mDragOnLeft;
 	BOOL			mResizable;
 
-	LLFloaterEnums::EOpenPositioning	mOpenPositioning;
-	S32									mSpecifiedLeft;
-	S32									mSpecifiedBottom;
+	LLFloaterEnums::EOpenPositioning	mPositioning;
 	LLCoordFloater	mPosition;
 	
 	S32				mMinWidth;
diff --git a/indra/llui/llfloaterreg.cpp b/indra/llui/llfloaterreg.cpp
index e144b68f5e..9115eb7174 100644
--- a/indra/llui/llfloaterreg.cpp
+++ b/indra/llui/llfloaterreg.cpp
@@ -96,7 +96,9 @@ LLFloater* LLFloaterReg::getLastFloaterCascading()
 		{
 			LLFloater* inst = *iter;
 
-			if (inst->getVisible() && inst->isPositioning(LLFloaterEnums::OPEN_POSITIONING_CASCADING))
+			if (inst->getVisible() 
+				&& (inst->isPositioning(LLFloaterEnums::POSITIONING_CASCADING)
+					|| inst->isPositioning(LLFloaterEnums::POSITIONING_CASCADE_GROUP)))
 			{
 				if (candidate_rect.mTop > inst->getRect().mTop)
 				{
@@ -358,9 +360,7 @@ void LLFloaterReg::restoreVisibleInstances()
 //static
 std::string LLFloaterReg::getRectControlName(const std::string& name)
 {
-	std::string res = std::string("floater_rect_") + name;
-	LLStringUtil::replaceChar( res, ' ', '_' );
-	return res;
+	return std::string("floater_rect_") + getBaseControlName(name);
 }
 
 //static
@@ -368,19 +368,48 @@ std::string LLFloaterReg::declareRectControl(const std::string& name)
 {
 	std::string controlname = getRectControlName(name);
 	LLFloater::getControlGroup()->declareRect(controlname, LLRect(),
-												 llformat("Window Position and Size for %s", name.c_str()),
+												 llformat("Window Size for %s", name.c_str()),
 												 TRUE);
 	return controlname;
 }
 
+std::string LLFloaterReg::declarePosXControl(const std::string& name)
+{
+	std::string controlname = std::string("floater_pos_") + getBaseControlName(name) + "_x";
+	LLFloater::getControlGroup()->declareF32(controlname, 
+											10.f,
+											llformat("Window X Position for %s", name.c_str()),
+											TRUE);
+	return controlname;
+}
+
+std::string LLFloaterReg::declarePosYControl(const std::string& name)
+{
+	std::string controlname = std::string("floater_pos_") + getBaseControlName(name) + "_y";
+	LLFloater::getControlGroup()->declareF32(controlname,
+											10.f,
+											llformat("Window Y Position for %s", name.c_str()),
+											TRUE);
+
+	return controlname;
+}
+
+
 //static
 std::string LLFloaterReg::getVisibilityControlName(const std::string& name)
 {
-	std::string res = std::string("floater_vis_") + name;
+	return std::string("floater_vis_") + getBaseControlName(name);
+}
+
+//static 
+std::string LLFloaterReg::getBaseControlName(const std::string& name)
+{
+	std::string res(name);
 	LLStringUtil::replaceChar( res, ' ', '_' );
 	return res;
 }
 
+
 //static
 std::string LLFloaterReg::declareVisibilityControl(const std::string& name)
 {
diff --git a/indra/llui/llfloaterreg.h b/indra/llui/llfloaterreg.h
index 534cf8b40a..a1e1f8a988 100644
--- a/indra/llui/llfloaterreg.h
+++ b/indra/llui/llfloaterreg.h
@@ -115,9 +115,11 @@ public:
 	// Control Variables
 	static std::string getRectControlName(const std::string& name);
 	static std::string declareRectControl(const std::string& name);
+	static std::string declarePosXControl(const std::string& name);
+	static std::string declarePosYControl(const std::string& name);
 	static std::string getVisibilityControlName(const std::string& name);
 	static std::string declareVisibilityControl(const std::string& name);
-
+	static std::string getBaseControlName(const std::string& name);
 	static std::string declareDockStateControl(const std::string& name);
 	static std::string getDockStateControlName(const std::string& name);
 
diff --git a/indra/llui/lllayoutstack.cpp b/indra/llui/lllayoutstack.cpp
index ae262f794e..4c730286da 100644
--- a/indra/llui/lllayoutstack.cpp
+++ b/indra/llui/lllayoutstack.cpp
@@ -113,7 +113,26 @@ S32 LLLayoutPanel::getLayoutDim() const
 					? getRect().getWidth()
 					: getRect().getHeight()));
 }
- 
+
+S32 LLLayoutPanel::getTargetDim() const
+{
+	return mTargetDim;
+}
+
+void LLLayoutPanel::setTargetDim(S32 value)
+{
+	LLRect new_rect(getRect());
+	if (mOrientation == LLLayoutStack::HORIZONTAL)
+	{
+		new_rect.mRight = new_rect.mLeft + value;
+	}
+	else
+	{
+		new_rect.mTop = new_rect.mBottom + value;
+	}
+	setShape(new_rect, true);
+}
+
 S32 LLLayoutPanel::getVisibleDim() const
 {
 	F32 min_dim = getRelevantMinDim();
@@ -172,12 +191,15 @@ void LLLayoutPanel::handleReshape(const LLRect& new_rect, bool by_user)
 	LLLayoutStack* stackp = dynamic_cast<LLLayoutStack*>(getParent());
 	if (stackp)
 	{
-		stackp->mNeedsLayout = true;
 		if (by_user)
-		{
-			// tell layout stack to account for new shape
+		{	// tell layout stack to account for new shape
+			
+			// make sure that panels have already been auto resized
+			stackp->updateLayout();
+			// now apply requested size to panel
 			stackp->updatePanelRect(this, new_rect);
 		}
+		stackp->mNeedsLayout = true;
 	}
 	LLPanel::handleReshape(new_rect, by_user);
 }
@@ -241,7 +263,6 @@ void LLLayoutStack::draw()
 			drawChild(panelp, 0, 0, !clip_rect.isEmpty());
 		}
 	}
-	mAnimatedThisFrame = false;
 }
 
 void LLLayoutStack::removeChild(LLView* view)
@@ -310,7 +331,7 @@ void LLLayoutStack::updateLayout()
 
 	if (!mNeedsLayout) return;
 
-	bool animation_in_progress = animatePanels();
+	bool continue_animating = animatePanels();
 	F32 total_visible_fraction = 0.f;
 	S32 space_to_distribute = (mOrientation == HORIZONTAL)
 							? getRect().getWidth()
@@ -415,7 +436,7 @@ void LLLayoutStack::updateLayout()
 
 	// 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;
+	mNeedsLayout = continue_animating;
 } // end LLLayoutStack::updateLayout
 
 LLLayoutPanel* LLLayoutStack::findEmbeddedPanel(LLPanel* panelp) const
@@ -488,6 +509,7 @@ void LLLayoutStack::updateClass()
 	for (instance_iter it = beginInstances(); it != endInstances(); ++it)
 	{
 		it->updateLayout();
+		it->mAnimatedThisFrame = false;
 	}
 }
 
@@ -557,7 +579,7 @@ void LLLayoutStack::normalizeFractionalSizes()
 
 bool LLLayoutStack::animatePanels()
 {
-	bool animation_in_progress = false;
+	bool continue_animating = false;
 	
 	//
 	// animate visibility
@@ -577,14 +599,15 @@ bool LLLayoutStack::animatePanels()
 					}
 				}
 				
-				animation_in_progress = true;
+				mAnimatedThisFrame = true;
+				continue_animating = true;
 			}
 			else
 			{
 				if (panelp->mVisibleAmt != 1.f)
 				{
 					panelp->mVisibleAmt = 1.f;
-					animation_in_progress = true;
+					mAnimatedThisFrame = true;
 				}
 			}
 		}
@@ -601,14 +624,15 @@ bool LLLayoutStack::animatePanels()
 					}
 				}
 
-				animation_in_progress = true;
+				continue_animating = true;
+				mAnimatedThisFrame = true;
 			}
 			else
 			{
 				if (panelp->mVisibleAmt != 0.f)
 				{
 					panelp->mVisibleAmt = 0.f;
-					animation_in_progress = true;
+					mAnimatedThisFrame = true;
 				}
 			}
 		}
@@ -616,22 +640,31 @@ bool LLLayoutStack::animatePanels()
 		F32 collapse_state = panelp->mCollapsed ? 1.f : 0.f;
 		if (panelp->mCollapseAmt != collapse_state)
 		{
-			if (!mAnimatedThisFrame)
+			if (mAnimate)
 			{
-				panelp->mCollapseAmt = lerp(panelp->mCollapseAmt, collapse_state, LLCriticalDamp::getInterpolant(mCloseTimeConstant));
-			}
-			animation_in_progress = true;
+				if (!mAnimatedThisFrame)
+				{
+					panelp->mCollapseAmt = lerp(panelp->mCollapseAmt, collapse_state, LLCriticalDamp::getInterpolant(mCloseTimeConstant));
+				}
 			
-			if (llabs(panelp->mCollapseAmt - collapse_state) < 0.001f)
+				if (llabs(panelp->mCollapseAmt - collapse_state) < 0.001f)
+				{
+					panelp->mCollapseAmt = collapse_state;
+				}
+
+				mAnimatedThisFrame = true;
+				continue_animating = true;
+			}
+			else
 			{
 				panelp->mCollapseAmt = collapse_state;
+				mAnimatedThisFrame = true;
 			}
 		}
 	}
 
-	mAnimatedThisFrame = true;
-
-	return animation_in_progress;
+	if (mAnimatedThisFrame) mNeedsLayout = true;
+	return continue_animating;
 }
 
 void LLLayoutStack::updatePanelRect( LLLayoutPanel* resized_panel, const LLRect& new_rect )
diff --git a/indra/llui/lllayoutstack.h b/indra/llui/lllayoutstack.h
index d32caec5f9..648cd5fdce 100644
--- a/indra/llui/lllayoutstack.h
+++ b/indra/llui/lllayoutstack.h
@@ -155,6 +155,8 @@ public:
 	void setVisible(BOOL visible);
 
 	S32 getLayoutDim() const;
+	S32 getTargetDim() const;
+	void setTargetDim(S32 value);
 	S32 getMinDim() const { return llmax(0, mMinDim); }
 	void setMinDim(S32 value) { mMinDim = value; }
 
diff --git a/indra/llui/lllineeditor.cpp b/indra/llui/lllineeditor.cpp
index 7e84814c51..d0fbf4b913 100644
--- a/indra/llui/lllineeditor.cpp
+++ b/indra/llui/lllineeditor.cpp
@@ -1047,7 +1047,7 @@ void LLLineEditor::cut()
 		// Prepare for possible rollback
 		LLLineEditorRollback rollback( this );
 
-		gClipboard.copyFromSubstring( mText.getWString(), left_pos, length );
+		LLClipboard::instance().copyToClipboard( mText.getWString(), left_pos, length );
 		deleteSelection();
 
 		// Validate new string and rollback the if needed.
@@ -1078,13 +1078,13 @@ void LLLineEditor::copy()
 	{
 		S32 left_pos = llmin( mSelectionStart, mSelectionEnd );
 		S32 length = llabs( mSelectionStart - mSelectionEnd );
-		gClipboard.copyFromSubstring( mText.getWString(), left_pos, length );
+		LLClipboard::instance().copyToClipboard( mText.getWString(), left_pos, length );
 	}
 }
 
 BOOL LLLineEditor::canPaste() const
 {
-	return !mReadOnly && gClipboard.canPasteString(); 
+	return !mReadOnly && LLClipboard::instance().isTextAvailable(); 
 }
 
 void LLLineEditor::paste()
@@ -1115,14 +1115,7 @@ void LLLineEditor::pasteHelper(bool is_primary)
 	if (can_paste_it)
 	{
 		LLWString paste;
-		if (is_primary)
-		{
-			paste = gClipboard.getPastePrimaryWString();
-		}
-		else 
-		{
-			paste = gClipboard.getPasteWString();
-		}
+		LLClipboard::instance().pasteFromClipboard(paste, is_primary);
 
 		if (!paste.empty())
 		{
@@ -1209,13 +1202,13 @@ void LLLineEditor::copyPrimary()
 	{
 		S32 left_pos = llmin( mSelectionStart, mSelectionEnd );
 		S32 length = llabs( mSelectionStart - mSelectionEnd );
-		gClipboard.copyFromPrimarySubstring( mText.getWString(), left_pos, length );
+		LLClipboard::instance().copyToClipboard( mText.getWString(), left_pos, length, true);
 	}
 }
 
 BOOL LLLineEditor::canPastePrimary() const
 {
-	return !mReadOnly && gClipboard.canPastePrimaryString(); 
+	return !mReadOnly && LLClipboard::instance().isTextAvailable(true); 
 }
 
 void LLLineEditor::updatePrimary()
diff --git a/indra/llui/llscrollcontainer.cpp b/indra/llui/llscrollcontainer.cpp
index 20bed050ad..9b7e30bb04 100644
--- a/indra/llui/llscrollcontainer.cpp
+++ b/indra/llui/llscrollcontainer.cpp
@@ -389,10 +389,17 @@ void LLScrollContainer::calcVisibleSize( S32 *visible_width, S32 *visible_height
 		{
 			*show_h_scrollbar = TRUE;
 			*visible_height -= scrollbar_size;
-			// Note: Do *not* recompute *show_v_scrollbar here because with
-			// the (- scrollbar_size) we just did we will always add a vertical scrollbar
-			// even if the height of the items is actually less than the visible size.
-			// Fear not though: there's enough calcVisibleSize() calls to add a vertical slider later.
+
+			// The view inside the scroll container should not be extended
+			// to container's full height to ensure the correct computation
+			// of *show_v_scrollbar after subtracting horizontal scrollbar_size.
+
+			// Must retest now that visible_height has changed
+			if( !*show_v_scrollbar && ((doc_height - *visible_height) > 1) )
+			{
+				*show_v_scrollbar = TRUE;
+				*visible_width -= scrollbar_size;
+			}
 		}
 	}
 }
diff --git a/indra/llui/llscrollcontainer.h b/indra/llui/llscrollcontainer.h
index 3aa79cc255..d87c95b3d7 100644
--- a/indra/llui/llscrollcontainer.h
+++ b/indra/llui/llscrollcontainer.h
@@ -91,7 +91,7 @@ public:
 	void			setReserveScrollCorner( BOOL b ) { mReserveScrollCorner = b; }
 	LLRect			getVisibleContentRect();
 	LLRect			getContentWindowRect();
-	const LLRect&	getScrolledViewRect() const { return mScrolledView ? mScrolledView->getRect() : LLRect::null; }
+	virtual const LLRect	getScrolledViewRect() const { return mScrolledView ? mScrolledView->getRect() : LLRect::null; }
 	void			pageUp(S32 overlap = 0);
 	void			pageDown(S32 overlap = 0);
 	void			goToTop();
@@ -116,6 +116,9 @@ public:
 	
 	bool autoScroll(S32 x, S32 y);
 
+protected:
+	LLView*		mScrolledView;
+
 private:
 	// internal scrollbar handlers
 	virtual void scrollHorizontal( S32 new_pos );
@@ -124,7 +127,6 @@ private:
 	void calcVisibleSize( S32 *visible_width, S32 *visible_height, BOOL* show_h_scrollbar, BOOL* show_v_scrollbar ) const;
 
 	LLScrollbar* mScrollbar[SCROLLBAR_COUNT];
-	LLView*		mScrolledView;
 	S32			mSize;
 	BOOL		mIsOpaque;
 	LLUIColor	mBackgroundColor;
diff --git a/indra/llui/llscrolllistctrl.cpp b/indra/llui/llscrolllistctrl.cpp
index f7017064d7..802914e25b 100644
--- a/indra/llui/llscrolllistctrl.cpp
+++ b/indra/llui/llscrolllistctrl.cpp
@@ -2520,7 +2520,7 @@ void	LLScrollListCtrl::copy()
 	{
 		buffer += (*itor)->getContentsCSV() + "\n";
 	}
-	gClipboard.copyFromSubstring(utf8str_to_wstring(buffer), 0, buffer.length());
+	LLClipboard::instance().copyToClipboard(utf8str_to_wstring(buffer), 0, buffer.length());
 }
 
 // virtual
diff --git a/indra/llui/lltexteditor.cpp b/indra/llui/lltexteditor.cpp
index 3409b6817d..9720dded6c 100644
--- a/indra/llui/lltexteditor.cpp
+++ b/indra/llui/lltexteditor.cpp
@@ -1332,7 +1332,7 @@ void LLTextEditor::cut()
 	}
 	S32 left_pos = llmin( mSelectionStart, mSelectionEnd );
 	S32 length = llabs( mSelectionStart - mSelectionEnd );
-	gClipboard.copyFromSubstring( getWText(), left_pos, length, mSourceID );
+	LLClipboard::instance().copyToClipboard( getWText(), left_pos, length);
 	deleteSelection( FALSE );
 
 	onKeyStroke();
@@ -1352,12 +1352,12 @@ void LLTextEditor::copy()
 	}
 	S32 left_pos = llmin( mSelectionStart, mSelectionEnd );
 	S32 length = llabs( mSelectionStart - mSelectionEnd );
-	gClipboard.copyFromSubstring(getWText(), left_pos, length, mSourceID);
+	LLClipboard::instance().copyToClipboard(getWText(), left_pos, length);
 }
 
 BOOL LLTextEditor::canPaste() const
 {
-	return !mReadOnly && gClipboard.canPasteString();
+	return !mReadOnly && LLClipboard::instance().isTextAvailable();
 }
 
 // paste from clipboard
@@ -1393,16 +1393,8 @@ void LLTextEditor::pasteHelper(bool is_primary)
 		return;
 	}
 
-	LLUUID source_id;
 	LLWString paste;
-	if (is_primary)
-	{
-		paste = gClipboard.getPastePrimaryWString(&source_id);
-	}
-	else 
-	{
-		paste = gClipboard.getPasteWString(&source_id);
-	}
+	LLClipboard::instance().pasteFromClipboard(paste, is_primary);
 
 	if (paste.empty())
 	{
@@ -1475,12 +1467,12 @@ void LLTextEditor::copyPrimary()
 	}
 	S32 left_pos = llmin( mSelectionStart, mSelectionEnd );
 	S32 length = llabs( mSelectionStart - mSelectionEnd );
-	gClipboard.copyFromPrimarySubstring(getWText(), left_pos, length, mSourceID);
+	LLClipboard::instance().copyToClipboard(getWText(), left_pos, length, true);
 }
 
 BOOL LLTextEditor::canPastePrimary() const
 {
-	return !mReadOnly && gClipboard.canPastePrimaryString();
+	return !mReadOnly && LLClipboard::instance().isTextAvailable(true);
 }
 
 void LLTextEditor::updatePrimary()
diff --git a/indra/llui/llview.cpp b/indra/llui/llview.cpp
index 421166dcd4..54843227b7 100644
--- a/indra/llui/llview.cpp
+++ b/indra/llui/llview.cpp
@@ -1835,7 +1835,10 @@ const LLCtrlQuery & LLView::getFocusRootsQuery()
 
 void	LLView::setShape(const LLRect& new_rect, bool by_user)
 {
-	handleReshape(new_rect, by_user);
+	if (new_rect != getRect())
+	{
+		handleReshape(new_rect, by_user);
+	}
 }
 
 void LLView::handleReshape(const LLRect& new_rect, bool by_user)
@@ -2225,145 +2228,163 @@ static bool get_last_child_rect(LLView* parent, LLRect *rect)
 }
 
 //static
-void LLView::applyXUILayout(LLView::Params& p, LLView* parent)
+void LLView::applyXUILayout(LLView::Params& p, LLView* parent, LLRect layout_rect)
 {
+	if (!parent) return;
+
 	const S32 VPAD = 4;
 	const S32 MIN_WIDGET_HEIGHT = 10;
 	
 	// *NOTE:  This will confuse export of floater/panel coordinates unless
 	// the default is also "topleft".  JC
-	if (p.layout().empty() && parent)
+	if (p.layout().empty())
 	{
 		p.layout = parent->getLayout();
 	}
 
-	if (parent)
+	if (layout_rect.isEmpty())
 	{
-		LLRect parent_rect = parent->getLocalRect();
-		// overwrite uninitialized rect params, using context
-		LLRect default_rect = parent->getLocalRect();
+		layout_rect = parent->getLocalRect();
+	}
 
-		bool layout_topleft = (p.layout() == "topleft");
+	// overwrite uninitialized rect params, using context
+	LLRect default_rect = parent->getLocalRect();
 
-		// convert negative or centered coordinates to parent relative values
-		// Note: some of this logic matches the logic in TypedParam<LLRect>::setValueFromBlock()
-		if (p.rect.left.isProvided() && p.rect.left < 0) p.rect.left = p.rect.left + parent_rect.getWidth();
-		if (p.rect.right.isProvided() && p.rect.right < 0) p.rect.right = p.rect.right + parent_rect.getWidth();
-		if (p.rect.bottom.isProvided() && p.rect.bottom < 0) p.rect.bottom = p.rect.bottom + parent_rect.getHeight();
-		if (p.rect.top.isProvided() && p.rect.top < 0) p.rect.top = p.rect.top + parent_rect.getHeight();
+	bool layout_topleft = (p.layout() == "topleft");
 
+	// convert negative or centered coordinates to parent relative values
+	// Note: some of this logic matches the logic in TypedParam<LLRect>::setValueFromBlock()
+	if (p.rect.left.isProvided()) 
+	{
+		p.rect.left = p.rect.left + ((p.rect.left >= 0) ? layout_rect.mLeft : layout_rect.mRight);
+	}
+	if (p.rect.right.isProvided())
+	{
+		p.rect.right = p.rect.right + ((p.rect.right >= 0) ? layout_rect.mLeft : layout_rect.mRight);
+	}
+	if (p.rect.bottom.isProvided()) 
+	{
+		p.rect.bottom = p.rect.bottom + ((p.rect.bottom >= 0) ? layout_rect.mBottom : layout_rect.mTop);
 		if (layout_topleft)
 		{
 			//invert top to bottom
-			if (p.rect.top.isProvided()) p.rect.top = parent_rect.getHeight() - p.rect.top;
-			if (p.rect.bottom.isProvided()) p.rect.bottom = parent_rect.getHeight() - p.rect.bottom;
+			p.rect.bottom = layout_rect.mBottom + layout_rect.mTop - p.rect.bottom;
 		}
-
-		// DEPRECATE: automatically fall back to height of MIN_WIDGET_HEIGHT pixels
-		if (!p.rect.height.isProvided() && !p.rect.top.isProvided() && p.rect.height == 0)
+	}
+	if (p.rect.top.isProvided())
+	{
+		p.rect.top = p.rect.top + ((p.rect.top >= 0) ? layout_rect.mBottom : layout_rect.mTop);
+		if (layout_topleft)
 		{
-			p.rect.height = MIN_WIDGET_HEIGHT;
+			//invert top to bottom
+			p.rect.top = layout_rect.mBottom + layout_rect.mTop - p.rect.top;
 		}
+	}
+
+	// DEPRECATE: automatically fall back to height of MIN_WIDGET_HEIGHT pixels
+	if (!p.rect.height.isProvided() && !p.rect.top.isProvided() && p.rect.height == 0)
+	{
+		p.rect.height = MIN_WIDGET_HEIGHT;
+	}
 
-		default_rect.translate(0, default_rect.getHeight());
+	default_rect.translate(0, default_rect.getHeight());
 
-		// If there was a recently constructed child, use its rectangle
-		get_last_child_rect(parent, &default_rect);
+	// If there was a recently constructed child, use its rectangle
+	get_last_child_rect(parent, &default_rect);
 
-		if (layout_topleft)
+	if (layout_topleft)
+	{
+		// Invert the sense of bottom_delta for topleft layout
+		if (p.bottom_delta.isProvided())
 		{
-			// Invert the sense of bottom_delta for topleft layout
-			if (p.bottom_delta.isProvided())
-			{
-				p.bottom_delta = -p.bottom_delta;
-			}
-			else if (p.top_pad.isProvided()) 
-			{
-				p.bottom_delta = -(p.rect.height + p.top_pad);
-			}
-			else if (p.top_delta.isProvided())
-			{
-				p.bottom_delta =
-					-(p.top_delta + p.rect.height - default_rect.getHeight());
-			}
-			else if (!p.left_delta.isProvided()
-					 && !p.left_pad.isProvided())
-			{
-				// set default position is just below last rect
-				p.bottom_delta.set(-(p.rect.height + VPAD), false);
-			}
-			else
-			{
-				p.bottom_delta.set(0, false);
-			}
-	
-			// default to same left edge
-			if (!p.left_delta.isProvided())
-			{
-				p.left_delta.set(0, false);
-			}
-			if (p.left_pad.isProvided())
-			{
-				// left_pad is based on prior widget's right edge
-				p.left_delta.set(p.left_pad + default_rect.getWidth(), false);
-			}
-			
-			default_rect.translate(p.left_delta, p.bottom_delta);				
+			p.bottom_delta = -p.bottom_delta;
 		}
-		else
-		{	
-			// set default position is just below last rect
-			if (!p.bottom_delta.isProvided())
-			{
-				p.bottom_delta.set(-(p.rect.height + VPAD), false);
-			}
-			if (!p.left_delta.isProvided())
-			{
-				p.left_delta.set(0, false);
-			}
-			default_rect.translate(p.left_delta, p.bottom_delta);
+		else if (p.top_pad.isProvided()) 
+		{
+			p.bottom_delta = -(p.rect.height + p.top_pad);
 		}
-
-		// this handles case where *both* x and x_delta are provided
-		// ignore x in favor of default x + x_delta
-		if (p.bottom_delta.isProvided()) p.rect.bottom.set(0, false);
-		if (p.left_delta.isProvided()) p.rect.left.set(0, false);
-
-		// selectively apply rectangle defaults, making sure that
-		// params are not flagged as having been "provided"
-		// as rect params are overconstrained and rely on provided flags
-		if (!p.rect.left.isProvided())
+		else if (p.top_delta.isProvided())
 		{
-			p.rect.left.set(default_rect.mLeft, false);
-			//HACK: get around the fact that setting a rect param component value won't invalidate the existing rect object value
-			p.rect.paramChanged(p.rect.left, true);
+			p.bottom_delta =
+				-(p.top_delta + p.rect.height - default_rect.getHeight());
 		}
-		if (!p.rect.bottom.isProvided())
+		else if (!p.left_delta.isProvided()
+					&& !p.left_pad.isProvided())
 		{
-			p.rect.bottom.set(default_rect.mBottom, false);
-			p.rect.paramChanged(p.rect.bottom, true);
+			// set default position is just below last rect
+			p.bottom_delta.set(-(p.rect.height + VPAD), false);
 		}
-		if (!p.rect.top.isProvided())
+		else
 		{
-			p.rect.top.set(default_rect.mTop, false);
-			p.rect.paramChanged(p.rect.top, true);
+			p.bottom_delta.set(0, false);
 		}
-		if (!p.rect.right.isProvided())
+	
+		// default to same left edge
+		if (!p.left_delta.isProvided())
 		{
-			p.rect.right.set(default_rect.mRight, false);
-			p.rect.paramChanged(p.rect.right, true);
-
+			p.left_delta.set(0, false);
 		}
-		if (!p.rect.width.isProvided())
+		if (p.left_pad.isProvided())
 		{
-			p.rect.width.set(default_rect.getWidth(), false);
-			p.rect.paramChanged(p.rect.width, true);
+			// left_pad is based on prior widget's right edge
+			p.left_delta.set(p.left_pad + default_rect.getWidth(), false);
 		}
-		if (!p.rect.height.isProvided())
+			
+		default_rect.translate(p.left_delta, p.bottom_delta);				
+	}
+	else
+	{	
+		// set default position is just below last rect
+		if (!p.bottom_delta.isProvided())
 		{
-			p.rect.height.set(default_rect.getHeight(), false);
-			p.rect.paramChanged(p.rect.height, true);
+			p.bottom_delta.set(-(p.rect.height + VPAD), false);
 		}
+		if (!p.left_delta.isProvided())
+		{
+			p.left_delta.set(0, false);
+		}
+		default_rect.translate(p.left_delta, p.bottom_delta);
+	}
+
+	// this handles case where *both* x and x_delta are provided
+	// ignore x in favor of default x + x_delta
+	if (p.bottom_delta.isProvided()) p.rect.bottom.set(0, false);
+	if (p.left_delta.isProvided()) p.rect.left.set(0, false);
+
+	// selectively apply rectangle defaults, making sure that
+	// params are not flagged as having been "provided"
+	// as rect params are overconstrained and rely on provided flags
+	if (!p.rect.left.isProvided())
+	{
+		p.rect.left.set(default_rect.mLeft, false);
+		//HACK: get around the fact that setting a rect param component value won't invalidate the existing rect object value
+		p.rect.paramChanged(p.rect.left, true);
+	}
+	if (!p.rect.bottom.isProvided())
+	{
+		p.rect.bottom.set(default_rect.mBottom, false);
+		p.rect.paramChanged(p.rect.bottom, true);
+	}
+	if (!p.rect.top.isProvided())
+	{
+		p.rect.top.set(default_rect.mTop, false);
+		p.rect.paramChanged(p.rect.top, true);
+	}
+	if (!p.rect.right.isProvided())
+	{
+		p.rect.right.set(default_rect.mRight, false);
+		p.rect.paramChanged(p.rect.right, true);
+
+	}
+	if (!p.rect.width.isProvided())
+	{
+		p.rect.width.set(default_rect.getWidth(), false);
+		p.rect.paramChanged(p.rect.width, true);
+	}
+	if (!p.rect.height.isProvided())
+	{
+		p.rect.height.set(default_rect.getHeight(), false);
+		p.rect.paramChanged(p.rect.height, true);
 	}
 }
 
diff --git a/indra/llui/llview.h b/indra/llui/llview.h
index fd19309a56..1c35349510 100644
--- a/indra/llui/llview.h
+++ b/indra/llui/llview.h
@@ -505,7 +505,7 @@ public:
 
 	// Set up params after XML load before calling new(),
 	// usually to adjust layout.
-	static void applyXUILayout(Params& p, LLView* parent);
+	static void applyXUILayout(Params& p, LLView* parent, LLRect layout_rect = LLRect());
 
 	// For re-export of floaters and panels, convert the coordinate system
 	// to be top-left based.