Merged in dfighter1985/ryzomcore/dfighter-tools (pull request #90)

GUI Editor improvements
Widget dragging, group selection, multiple selection, grouping, ungrouping.

--HG--
branch : develop

code/nel/include/nel/gui/ctrl_text_button.h

@@ -126,6 +126,7 @@ namespace NLGUI
 
 		void onRemoved();
 		void onWidgetDeleted( CInterfaceElement *e );
+		void moveBy( sint32 x, sint32 y );
 
 	protected:
 

code/nel/include/nel/gui/editor_selection_watcher.h

@@ -15,6 +15,7 @@
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 #include <string>
+#include <vector>
 
 namespace NLGUI
 {
@@ -24,7 +25,7 @@ namespace NLGUI
 	public:
 
 		/// Notifies the watcher about the change
-		virtual void selectionChanged( std::string &newSelection ) = 0;
+		virtual void selectionChanged() = 0;
 	};
 }
 

code/nel/include/nel/gui/interface_element.h

@@ -508,7 +508,24 @@ namespace NLGUI
 
 		/// Called when the widget is deleted,
 		/// so other widgets in the group can check if it belongs to them
-		virtual void onWidgetDeleted( CInterfaceElement *e ){}
+		virtual void onWidgetDeleted( CInterfaceElement *e );
+
+		/// Move the element by x in the X direction and y in the Y direction
+		//  Uses real coordinates
+		virtual void moveBy( sint32 x, sint32 y )
+		{
+			_XReal += x;
+			_YReal += y;
+		}
+
+		/// Retrieves the coordinates of the specified hotspot
+		void getHSCoords( const THotSpot &hs, sint32 &x, sint32 &y ) const;
+
+		/// Tells which hotspot is the closest to the specified element
+		void getClosestHotSpot( const CInterfaceElement *other, THotSpot &hs );
+
+		/// Aligns the element to the other element specified
+		void alignTo( CInterfaceElement *other );
 
 	protected:
 

code/nel/include/nel/gui/interface_factory.h

@@ -14,19 +14,22 @@
 // You should have received a copy of the GNU Affero General Public License
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-#ifndef WIDGET_ADD_WATCHER
+#ifndef IFACE_FACTORY
-#define WIDGET_ADD_WATCHER
+#define IFACE_FACTORY
 
 #include <string>
 
 namespace NLGUI
 {
-	class IWidgetAdditionWatcher
+	class CViewBase;
+
+	/// Simple interface element ( widget ) factory
+	class CInterfaceFactory
 	{
 	public:
-		virtual void widgetAdded( const std::string &name ) = 0;
+		static CViewBase* createClass( const std::string &name );
 	};
 }
 
-#endif
 
+#endif

code/nel/include/nel/gui/interface_group.h

@@ -57,6 +57,7 @@ namespace NLGUI
 		CInterfaceElement* findFromShortId(const std::string &id);
 
 		/// Dynamic creation
+		virtual void addElement (CInterfaceElement *child, sint eltOrder = -1 );
 		virtual void addView  (CViewBase *child , sint eltOrder = -1);
 		virtual void addCtrl  (CCtrlBase *child, sint eltOrder = -1);
 		virtual void addGroup (CInterfaceGroup *child, sint eltOrder = -1);
@@ -327,6 +328,17 @@ namespace NLGUI
 
 		void onWidgetDeleted( CInterfaceElement *e );
 
+		void moveBy( sint32 x, sint32 y );
+
+		// Blows up the group, moves it's children to it's parent
+		bool explode();
+
+		/// Adjusts the group's size so that all elements are fully inside the borders
+		void spanElements();
+
+		/// Aligns the elements - used for forming groups
+		void alignElements();
+
 	protected:
 
 		void makeNewClip (sint32 &oldClipX, sint32 &oldClipY, sint32 &oldClipW, sint32 &oldClipH);

code/nel/include/nel/gui/view_text.h

@@ -204,7 +204,11 @@ namespace NLGUI
 		REFLECT_EXPORT_END
 
 
-			virtual void serial(NLMISC::IStream &f);
+		virtual void serial(NLMISC::IStream &f);
+
+		// Sets the parent element
+		// See the comment at the field
+		void setParentElm( CInterfaceElement *parent ){ _ParentElm = parent; }
 
 	protected:
 		std::string _HardtextFormat;
@@ -382,6 +386,9 @@ namespace NLGUI
 		/// Dynamic tooltips
 		std::vector<CCtrlToolTip*>	_Tooltips;
 
+		// Parent element is the element where this text belongs to
+		// For example: text button
+		CInterfaceElement *_ParentElm;
 
 	private:
 		void setup ();

code/nel/include/nel/gui/widget_manager.h

@@ -75,6 +75,16 @@ namespace NLGUI
 			virtual void process() = 0;
 		};
 
+		// Interface for event handlers that can be called when widgets are added or moved
+		class IWidgetWatcher
+		{
+		public:
+			IWidgetWatcher(){}
+			virtual ~IWidgetWatcher(){}
+			virtual void onWidgetAdded( const std::string &name ) = 0;
+			virtual void onWidgetMoved( const std::string &oldid, const std::string &newid ) = 0;
+		};
+
 		/// Frame render times
 		struct SInterfaceTimes
 		{
@@ -493,18 +503,32 @@ namespace NLGUI
 
 		IParser* getParser() const{ return parser; }
 
-		std::string& getCurrentEditorSelection(){ return currentEditorSelection; }
+		/// Retrieves the Id of the currently selected widgets
-		void setCurrentEditorSelection( const std::string &name );
+		void getEditorSelection( std::vector< std::string > &selection );
+
+		/// Adds the widget with the specified Id to the selected widgets
+		void selectWidget( const std::string &name );
+
+		/// Clears the selection
+		void clearEditorSelection();
+
 		void notifySelectionWatchers();
 		void registerSelectionWatcher( IEditorSelectionWatcher *watcher );
 		void unregisterSelectionWatcher( IEditorSelectionWatcher *watcher );
 
-		void notifyAdditionWatchers( const std::string &widgetName );
+
-		void registerAdditionWatcher( IWidgetAdditionWatcher *watcher );
+		void onWidgetAdded( const std::string &id );
-		void unregisterAdditionWatcher( IWidgetAdditionWatcher *watcher );
+		void onWidgetMoved( const std::string &oldid, const std::string &newid );
+		void registerWidgetWatcher( IWidgetWatcher *watcher );
+		void unregisterWidgetWatcher( IWidgetWatcher *watcher );
 
 		CInterfaceElement* addWidgetToGroup( std::string &group, std::string &widgetClass, std::string &widgetName );
 
+		void setGroupSelection( bool b ){ _GroupSelection = b; }
+		bool groupSelection();
+		bool unGroupSelection();
+		void setMultiSelection( bool b ){ multiSelection = b; }
+				
 	private:
 		CWidgetManager();
 		~CWidgetManager();
@@ -532,7 +556,7 @@ namespace NLGUI
 
 		NLMISC::CRefPtr< CViewBase > _CapturedView;
 
-		NLMISC::CRefPtr< CInterfaceElement > draggedElement;
+		NLMISC::CRefPtr< CInterfaceElement > draggedElement; // the element that we're currently dragging
 
 		bool startDragging();
 		void stopDragging();
@@ -594,10 +618,12 @@ namespace NLGUI
 		std::vector< INewScreenSizeHandler* > newScreenSizeHandlers;
 		std::vector< IOnWidgetsDrawnHandler* > onWidgetsDrawnHandlers;
 		std::vector< IEditorSelectionWatcher* > selectionWatchers;
-		std::vector< IWidgetAdditionWatcher* > additionWatchers;
+		std::vector< IWidgetWatcher* > widgetWatchers;
 		
-
+		std::vector< std::string > editorSelection;
-		std::string currentEditorSelection;
+		bool _GroupSelection;
+		bool multiSelection;
+		uint32 _WidgetCount;
 	};
 
 }

code/nel/src/gui/ctrl_text_button.cpp

@@ -23,6 +23,7 @@
 #include "nel/gui/group_container_base.h"
 #include "nel/gui/lua_ihm.h"
 #include "nel/gui/widget_manager.h"
+#include "nel/gui/interface_factory.h"
 #include "nel/misc/i18n.h"
 
 using namespace std;
@@ -66,8 +67,6 @@ namespace NLGUI
 	{
 		if( _ViewText != NULL )
 		{
-			if( _Parent != NULL )
-				_Parent->delView( _ViewText, true );
 			delete _ViewText;
 			_ViewText = NULL;
 		}
@@ -569,6 +568,7 @@ namespace NLGUI
 			((CViewTextID*)_ViewText)->parseTextIdOptions(cur);
 		// Same RenderLayer as us.
 		_ViewText->setRenderLayer(getRenderLayer());
+		_ViewText->setParentElm(this);
 		// Parse the hardText (if not text id)
 		if(!_IsViewTextId)
 		{
@@ -863,6 +863,8 @@ namespace NLGUI
 			}
 			if(getFrozen() && getFrozenHalfTone())
 				_ViewText->setAlpha(_ViewText->getAlpha()>>2);
+
+			_ViewText->draw();
 		}
 	}
 
@@ -873,6 +875,9 @@ namespace NLGUI
 		// Should have been setuped with addCtrl
 		nlassert(_Setuped);
 
+		if( _Name == "==MARKED==" )
+			bool marked = true;
+
 		// Compute Size according to bitmap and Text.
 		if (!(_SizeRef & 1))
 		{
@@ -886,6 +891,8 @@ namespace NLGUI
 		}
 
 		CViewBase::updateCoords();
+
+		_ViewText->updateCoords();
 	}
 
 	// ***************************************************************************
@@ -901,7 +908,7 @@ namespace NLGUI
 
 		if( _ViewText == NULL )
 		{
-			CViewBase *v = CWidgetManager::getInstance()->getParser()->createClass( "text" );
+			CViewBase *v = CInterfaceFactory::createClass( "text" );
 			nlassert( v != NULL );
 			_ViewText = dynamic_cast< CViewText* >( v );
 			_ViewText->setId( _Id + "_text" );
@@ -910,15 +917,13 @@ namespace NLGUI
 		}
 
 		// setup the viewText and add to parent
-		_ViewText->setParent (getParent());
+		_ViewText->setParentElm (this);
 		_ViewText->setParentPos (this);
 		_ViewText->setParentPosRef (_TextParentPosRef);
 		_ViewText->setPosRef (_TextPosRef);
 		_ViewText->setActive(_Active);
 		_ViewText->setX(_TextX);
 		_ViewText->setY(_TextY);
-
-		getParent()->addView(_ViewText);
 	}
 
 	// ***************************************************************************
@@ -1007,17 +1012,18 @@ namespace NLGUI
 	// ***************************************************************************
 	void CCtrlTextButton::onRemoved()
 	{
-		if( _ViewText != NULL )
-		{
-			if( _Parent != NULL )
-				_Parent->delView( _ViewText, true );
-		}
 	}
 
 	void CCtrlTextButton::onWidgetDeleted( CInterfaceElement *e )
 	{
-		if( e == _ViewText )
+	}
-			_ViewText = NULL;
+
+	void CCtrlTextButton::moveBy( sint32 x, sint32 y )
+	{
+		CInterfaceElement::moveBy( x, y );
+
+		if( _ViewText != NULL )
+			_ViewText->updateCoords();
 	}
 }
 

code/nel/src/gui/group_editbox.cpp

@@ -27,6 +27,7 @@
 #include "nel/gui/widget_manager.h"
 #include "nel/gui/view_renderer.h"
 #include "nel/gui/db_manager.h"
+#include "nel/gui/interface_factory.h"
 #include <limits>
 
 using namespace std;
@@ -1543,7 +1544,7 @@ namespace NLGUI
 			if( editorMode )
 			{
 				nlwarning( "Trying to create a new 'edit_text' for %s", getId().c_str() );
-				_ViewText = dynamic_cast< CViewText* >( CWidgetManager::getInstance()->getParser()->createClass( "text" ) );
+				_ViewText = dynamic_cast< CViewText* >( CInterfaceFactory::createClass( "text" ) );
 				if( _ViewText != NULL )
 				{
 					_ViewText->setParent( this );

code/nel/src/gui/interface_element.cpp

@@ -226,13 +226,13 @@ namespace NLGUI
 		else
 		if( name == "posref" )
 		{
-			convertHotSpot( value.c_str() );
+			_PosRef = convertHotSpot( value.c_str() );
 			return;
 		}
 		else
 		if( name == "parentposref" )
 		{
-			convertHotSpot( value.c_str() );
+			_ParentPosRef = convertHotSpot( value.c_str() );
 		}
 		else
 		if( name == "sizeref" )
@@ -1594,6 +1594,105 @@ namespace NLGUI
 		}
 	}
 
+	void CInterfaceElement::getHSCoords( const THotSpot &hs, sint32 &x, sint32 &y ) const
+	{
+		x = _XReal;
+		y = _YReal;
+
+		if( ( hs & Hotspot_Mx ) != 0 )
+			y += _HReal / 2;
+		else
+		if( ( hs & Hotspot_Tx ) != 0 )
+			y += _HReal;
+
+
+		if( ( hs & Hotspot_xM ) != 0 )
+			x += _WReal / 2;
+		else
+		if( ( hs & Hotspot_xR ) != 0 )
+			x += _WReal;
+	}
+
+	void CInterfaceElement::getClosestHotSpot( const CInterfaceElement *other, THotSpot &hs )
+	{
+		/// Iterate over the following hotspots, calculate the distance and store the closest
+
+
+		static THotSpot hslist[] =
+		{
+			Hotspot_BL,
+			Hotspot_BR,
+			Hotspot_MM,
+			Hotspot_TL,
+			Hotspot_TR
+		};
+
+		int c = sizeof( hslist ) / sizeof( THotSpot );
+
+		int x,y,ox,oy,vx,vy;
+		float d;
+		float closestd = 9999999.0f;
+		THotSpot closestHS = Hotspot_TR;
+
+		for( int i = 0; i < c; i++ )
+		{
+			other->getHSCoords( hslist[ i ], ox, oy );
+			getHSCoords( hslist[ i ], x, y );
+
+			// Make a vector between the two hotspots
+			vx = x - ox;
+			vy = y - oy;
+
+			// Calculate length
+			d = sqrt( pow( vx, 2.0f ) + pow( vy, 2.0f ) );
+
+			// If these hotspots are the closest, store the hotspot
+			if( d < closestd )
+			{
+				closestd = d;
+				closestHS = hslist[ i ];
+			}
+		}
+
+		hs = closestHS;
+	}
+
+	void CInterfaceElement::alignTo( CInterfaceElement *other )
+	{
+		if( other == this )
+			return;
+
+		// Check which hotspot is the closest
+		THotSpot hs;
+		other->getClosestHotSpot( this, hs );
+
+		// Get the hotspot coordinates
+		sint32 x, y, ox, oy;
+		getHSCoords( hs, x, y );
+		other->getHSCoords( hs, ox, oy );
+
+		// Calculate the difference between the hotspot we found and our current position,
+		sint32 dx = ox - x;
+		sint32 dy = oy - y;
+
+		// This difference is our offset, so we remain in the same position
+		setX( -1 * dx );
+		setY( -1 * dy );
+
+		setPosRef( hs );
+		setParentPosRef( hs );
+
+		invalidateCoords();
+	}
+
+	void CInterfaceElement::onWidgetDeleted( CInterfaceElement *e )
+	{
+		if( e == getParentPos() )
+			setParentPos( NULL );
+		if( e == getParentSize() )
+			setParentSize( NULL );
+	}
+
 	CStringMapper* CStringShared::_UIStringMapper = NULL;
 
 

code/nel/src/gui/interface_factory.cpp

@@ -0,0 +1,29 @@
+// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
+// Copyright (C) 2010  Winch Gate Property Limited
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program 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 Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+#include "nel/gui/interface_factory.h"
+#include "nel/gui/view_base.h"
+#include "nel/misc/factory.h"
+
+namespace NLGUI
+{
+	CViewBase* CInterfaceFactory::createClass( const std::string &name )
+	{
+		return NLMISC_GET_FACTORY( CViewBase, std::string ).createObject( std::string( name ) , CViewBase::TCtorParam() );
+	}
+}
+
+

code/nel/src/gui/interface_group.cpp

@@ -911,6 +911,31 @@ namespace NLGUI
 		}
 	}
 
+	// ------------------------------------------------------------------------------------------------
+	void CInterfaceGroup::addElement (CInterfaceElement *child, sint eltOrder /*= -1*/)
+	{
+		if (!child)
+		{
+			nlwarning("<CInterfaceGroup::addView> : tried to add a NULL view");
+			return;
+		}
+
+		if( child->isGroup() )
+		{
+			addGroup( static_cast< CInterfaceGroup* >( child ), eltOrder );
+		}
+		else
+		if( child->isCtrl() )
+		{
+			addCtrl( static_cast< CCtrlBase* >( child ), eltOrder );
+		}
+		else
+		if( child->isView() )
+		{
+			addView( static_cast< CViewBase* >( child ), eltOrder );
+		}
+	}
+
 	// ------------------------------------------------------------------------------------------------
 	void CInterfaceGroup::addView (CViewBase *child, sint eltOrder /*= -1*/)
 	{
@@ -1312,6 +1337,11 @@ namespace NLGUI
 			for (ite = _EltOrder.begin() ; ite != _EltOrder.end(); ite++)
 			{
 				CViewBase *pVB = *ite;
+				if( pVB->getName() == "=MARKED=" )
+				{
+					nlinfo( "=MARKED=" );
+				}
+
 				if (pVB->getActive())
 					pVB->draw();
 			}
@@ -2514,5 +2544,101 @@ namespace NLGUI
 		for( std::vector< CInterfaceGroup* >::iterator itr = _ChildrenGroups.begin(); itr != _ChildrenGroups.end(); ++itr )
 			(*itr)->onWidgetDeleted( e );
 	}
+
+	void CInterfaceGroup::moveBy( sint32 x, sint32 y )
+	{
+		CInterfaceElement::moveBy( x, y );
+
+		for( int i = 0; i < _EltOrder.size(); i++ )
+		{
+			CViewBase *v = _EltOrder[ i ];
+			v->updateCoords();
+		}
+	}
+
+	bool CInterfaceGroup::explode()
+	{
+		CInterfaceGroup *p = getParent();
+		if( p == NULL )
+			return false;
+
+		std::string oldId;
+
+		// Reparent children
+		for( sint32 i = 0; i < _EltOrder.size(); i++ )
+		{
+			CInterfaceElement *e = _EltOrder[ i ];
+
+			oldId = e->getId();
+
+			e->setW( e->getWReal() );
+			e->setH( e->getHReal() );
+			e->setSizeRef( "" );
+
+			e->setParent( p );
+			
+			e->setParentPos( p );
+			e->setParentSize( p );
+			e->alignTo( p );
+
+			p->addElement( e );
+			e->setIdRecurse( e->getShortId() );
+
+			CWidgetManager::getInstance()->onWidgetMoved( oldId, e->getId() );
+		}
+
+		_EltOrder.clear();
+		_Views.clear();
+		_Controls.clear();
+		_ChildrenGroups.clear();
+
+		return true;
+	}
+
+	void CInterfaceGroup::spanElements()
+	{
+		sint32 minx = std::numeric_limits< sint32 >::max();
+		sint32 miny = std::numeric_limits< sint32 >::max();
+		sint32 maxx = std::numeric_limits< sint32 >::min();
+		sint32 maxy = std::numeric_limits< sint32 >::min();
+
+		sint32 tlx,tly,brx,bry;
+
+		// Find the min and max coordinates of the elements
+		for( int i = 0; i < _EltOrder.size(); i++ )
+		{
+			CViewBase *v = _EltOrder[ i ];
+
+			v->getHSCoords( Hotspot_TL, tlx, tly );
+			v->getHSCoords( Hotspot_BR, brx, bry );
+
+			if( tlx < minx )
+				minx = tlx;
+			if( brx > maxx )
+				maxx = brx;
+			if( bry < miny )
+				miny = bry;
+			if( tly > maxy )
+				maxy = tly;
+		}
+
+		// Set the position and the width and height based on these coords
+		setW( maxx - minx );
+		setH( maxy - miny );
+		_WReal = getW();
+		_HReal = getH();
+		_XReal = minx;
+		_YReal = miny;
+	}
+
+	void CInterfaceGroup::alignElements()
+	{
+		for( int i = 0; i < _EltOrder.size(); i++ )
+		{
+			CViewBase *v = _EltOrder[ i ];
+			v->alignTo( this );
+		}
+	}
+
 }
 

code/nel/src/gui/view_base.cpp

@@ -57,7 +57,7 @@ namespace NLGUI
 			{
 				if( editorMode )
 				{
-					CWidgetManager::getInstance()->setCurrentEditorSelection( getId() );
+					CWidgetManager::getInstance()->selectWidget( getId() );
 					return true;
 				}
 			}

code/nel/src/gui/view_text.cpp

@@ -1847,9 +1847,18 @@ namespace NLGUI
 		if (_AutoClamp)
 		{
 			CViewBase::updateCoords ();
-			if (_Parent)
+
+			// If there's no parent, try the parent of the parent element.
+			// Since we will be under the same group
+			CInterfaceGroup *parent = _Parent;
+			if( parent == NULL )
+			{
+				if( _ParentElm != NULL )
+					parent = _ParentElm->getParent();
+			}
+
+			if (parent)
 			{
-				CInterfaceGroup *parent = _Parent;
 				// avoid resizing parents to compute the limiter
 				while (parent && (parent->getResizeFromChildW() || parent->isGroupList() ))
 				{

code/nel/src/gui/widget_manager.cpp

@@ -34,7 +34,6 @@
 #include "nel/gui/interface_expr.h"
 #include "nel/gui/reflect_register.h"
 #include "nel/gui/editor_selection_watcher.h"
-#include "nel/gui/widget_addition_watcher.h"
 #include "nel/misc/events.h"
 
 namespace NLGUI
@@ -2079,9 +2078,9 @@ namespace NLGUI
 
 		if( CInterfaceElement::getEditorMode() )
 		{
-			if( !currentEditorSelection.empty() )
+			for( int i = 0; i < editorSelection.size(); i++ )
 			{
-				CInterfaceElement *e = getElementFromId( currentEditorSelection );
+				CInterfaceElement *e = getElementFromId( editorSelection[ i ] );
 				if( e != NULL )
 					e->drawHighlight();
 			}
@@ -2304,6 +2303,14 @@ namespace NLGUI
 		eventDesc.setX( _Pointer->getX() );
 		eventDesc.setY( _Pointer->getY() );
 
+		if( CInterfaceElement::getEditorMode() )
+		{
+			// Let's pretend we've handled the event... or actually we have!
+			if( ( eventDesc.getEventTypeExtended() == CEventDescriptorMouse::mouserightdown ) ||
+				( eventDesc.getEventTypeExtended() == CEventDescriptorMouse::mouserightup ) )
+				return true;
+		}
+
 		if( isMouseHandlingEnabled() )
 		{
 			// First thing to do : Capture handling
@@ -2402,20 +2409,37 @@ namespace NLGUI
 				// This may happen when alt-tab has been used => the sheet is dragged but the left button is up
 				if (!CCtrlDraggable::getDraggedSheet())
 				{
-					// Take the top most control.
+					if( CInterfaceElement::getEditorMode() && _GroupSelection )
-					uint nMaxDepth = 0;
-					const std::vector< CCtrlBase* >& _CtrlsUnderPointer = getCtrlsUnderPointer();
-					for (sint32 i = (sint32)_CtrlsUnderPointer.size()-1; i >= 0; i--)
 					{
-						CCtrlBase	*ctrl= _CtrlsUnderPointer[i];
+						for( sint32 i = _GroupsUnderPointer.size() - 1; i >= 0; i-- )
-						if (ctrl && ctrl->isCapturable() && ctrl->isInGroup( pNewCurrentWnd ) )
 						{
-							uint d = ctrl->getDepth( pNewCurrentWnd );
+							CInterfaceGroup *g = _GroupsUnderPointer[ i ];
-							if (d > nMaxDepth)
+							if( ( g != NULL ) && ( g->isInGroup( pNewCurrentWnd ) ) )
 							{
-								nMaxDepth = d;
+								_CapturedView = g;
-								setCapturePointerLeft( ctrl );
 								captured = true;
+								break;
+							}
+						}
+					}
+
+					if( !captured )
+					{
+						// Take the top most control.
+						uint nMaxDepth = 0;
+						const std::vector< CCtrlBase* >& _CtrlsUnderPointer = getCtrlsUnderPointer();
+						for (sint32 i = (sint32)_CtrlsUnderPointer.size()-1; i >= 0; i--)
+						{
+							CCtrlBase	*ctrl= _CtrlsUnderPointer[i];
+							if (ctrl && ctrl->isCapturable() && ctrl->isInGroup( pNewCurrentWnd ) )
+							{
+								uint d = ctrl->getDepth( pNewCurrentWnd );
+								if (d > nMaxDepth)
+								{
+									nMaxDepth = d;
+									setCapturePointerLeft( ctrl );
+									captured = true;
+								}
 							}
 						}
 					}
@@ -2452,6 +2476,11 @@ namespace NLGUI
 					// handle the capture
 					_CapturedView->handleEvent( evnt );
 				}
+				else
+				{
+					if( CInterfaceElement::getEditorMode() )
+						clearEditorSelection();
+				}
 			}
 
 			// Manage RightClick
@@ -2631,9 +2660,10 @@ namespace NLGUI
 			else
 			if( draggedElement != NULL )
 			{
-				draggedElement->setXReal( newX );
+				sint32 dx = newX - oldX;
-				draggedElement->setYReal( newY );
+				sint32 dy = newY - oldY;
-				draggedElement->invalidateCoords();
+
+				draggedElement->moveBy( dx, dy );
 			}
 		}
 
@@ -2666,7 +2696,30 @@ namespace NLGUI
 
 	void CWidgetManager::stopDragging()
 	{
-		draggedElement = NULL;
+		if( draggedElement != NULL )
+		{
+			CInterfaceGroup *g = getGroupUnder( draggedElement->getXReal(), draggedElement->getYReal() );
+			CInterfaceElement *e = draggedElement;
+			CInterfaceGroup *tw = getTopWindow();
+
+			if( g == NULL )
+				g = tw;
+
+			std::string oldid = e->getId();
+			
+			e->setParent( g );
+			e->setIdRecurse( e->getShortId() );
+			e->setParentPos( g );
+			e->setParentSize( g );
+			g->addElement( e );
+
+			e->alignTo( g );
+			//e->setName( "==MARKED==" );
+
+			draggedElement = NULL;
+
+			onWidgetMoved( oldid, e->getId() );
+		}
 	}
 	
 	// ------------------------------------------------------------------------------------------------
@@ -3297,25 +3350,53 @@ namespace NLGUI
 		}
 	}
 
-
+	void CWidgetManager::getEditorSelection( std::vector< std::string > &selection )
-	void CWidgetManager::setCurrentEditorSelection( const std::string &name )
 	{
+		selection.clear();
+		for( int i = 0; i < editorSelection.size(); i++ )
+			selection.push_back( editorSelection[ i ] );
+	}
+
+	void CWidgetManager::selectWidget( const std::string &name )
+	{
+		std::vector< std::string >::iterator itr 
+			= std::find( editorSelection.begin(), editorSelection.end(), name );
+
 		CInterfaceElement *e = getElementFromId( name );
-		if( e != NULL )
+		
+		if( itr != editorSelection.end() )
 		{
-			if( !currentEditorSelection.empty() )
+			// If multiselection is on unselect if already selected
+			if( multiSelection )
 			{
-				CInterfaceElement *prev = getElementFromId( currentEditorSelection );
+				editorSelection.erase( itr );
-				if( prev != NULL )
+				if( e != NULL )
-					prev->setEditorSelected( false );
+					e->setEditorSelected( false );
 			}
-			e->setEditorSelected( true );
 		}
 		else
-		if( !name.empty() )
+		{
-			return;
+			// Select if not yet selected
+			if( e != NULL )
+			{
+				// If multiselection is off, we can only have 1 widget selected
+				if( !multiSelection )
+				{
+					editorSelection.clear();
+				}
 
-		currentEditorSelection = name;
+				e->setEditorSelected( true );
+				editorSelection.push_back( name );
+			}
+				
+		}
+
+		notifySelectionWatchers();
+	}
+
+	void CWidgetManager::clearEditorSelection()
+	{
+		editorSelection.clear();
 		notifySelectionWatchers();
 	}
 
@@ -3324,7 +3405,7 @@ namespace NLGUI
 		std::vector< IEditorSelectionWatcher* >::iterator itr = selectionWatchers.begin();
 		while( itr != selectionWatchers.end() )
 		{
-			(*itr)->selectionChanged( currentEditorSelection );
+			(*itr)->selectionChanged();	
 			++itr;
 		}
 	}
@@ -3353,36 +3434,46 @@ namespace NLGUI
 		selectionWatchers.erase( itr );
 	}
 
-	void CWidgetManager::notifyAdditionWatchers( const std::string &widgetName )
+	void CWidgetManager::onWidgetAdded( const std::string &id )
 	{
-		std::vector< IWidgetAdditionWatcher* >::const_iterator itr = additionWatchers.begin();
+		std::vector< IWidgetWatcher* >::const_iterator itr = widgetWatchers.begin();
-		while( itr != additionWatchers.end() )
+		while( itr != widgetWatchers.end() )
 		{
-			(*itr)->widgetAdded( widgetName );
+			(*itr)->onWidgetAdded( id );
 			++itr;
 		}
 	}
 
-	void CWidgetManager::registerAdditionWatcher( IWidgetAdditionWatcher *watcher )
+	void CWidgetManager::onWidgetMoved( const std::string &oldid, const std::string &newid )
 	{
-		std::vector< IWidgetAdditionWatcher* >::const_iterator itr 
+		std::vector< IWidgetWatcher* >::const_iterator itr = widgetWatchers.begin();
-			= std::find( additionWatchers.begin(), additionWatchers.end(), watcher );
+		while( itr != widgetWatchers.end() )
-		// already exists
+		{
-		if( itr != additionWatchers.end() )
+			(*itr)->onWidgetMoved( oldid, newid );
-			return;
+			++itr;
-
+		}
-		additionWatchers.push_back( watcher );
 	}
 
-	void CWidgetManager::unregisterAdditionWatcher( IWidgetAdditionWatcher *watcher )
+	void CWidgetManager::registerWidgetWatcher( IWidgetWatcher *watcher )
 	{
-		std::vector< IWidgetAdditionWatcher* >::iterator itr
+		std::vector< IWidgetWatcher* >::const_iterator itr 
-			= std::find( additionWatchers.begin(), additionWatchers.end(), watcher );
+			= std::find( widgetWatchers.begin(), widgetWatchers.end(), watcher );
-		// doesn't exist
+		// already exists
-		if( itr == additionWatchers.end() )
+		if( itr != widgetWatchers.end() )
 			return;
 
-		additionWatchers.erase( itr );
+		widgetWatchers.push_back( watcher );
+	}
+
+	void CWidgetManager::unregisterWidgetWatcher( IWidgetWatcher *watcher )
+	{
+		std::vector< IWidgetWatcher* >::iterator itr
+			= std::find( widgetWatchers.begin(), widgetWatchers.end(), watcher );
+		// doesn't exist
+		if( itr == widgetWatchers.end() )
+			return;
+
+		widgetWatchers.erase( itr );
 	}
 
 	CInterfaceElement* CWidgetManager::addWidgetToGroup( std::string &group, std::string &widgetClass, std::string &widgetName )
@@ -3415,11 +3506,103 @@ namespace NLGUI
 		else
 			g->addView( v );
 
-		notifyAdditionWatchers( v->getId() );
+		onWidgetAdded( v->getId() );
 		
 		return v;
 	}
 
+	bool CWidgetManager::groupSelection()
+	{
+		std::vector< CInterfaceElement* > elms;
+
+		// Resolve the widget names
+		for( int i = 0; i < editorSelection.size(); i++ )
+		{
+			CInterfaceElement *e = getElementFromId( editorSelection[ i ] );
+			if( e != NULL )
+				elms.push_back( e );
+		}
+
+		editorSelection.clear();
+
+		if( elms.empty() )
+			return false;
+
+		// Create the group as the subgroup of the top window
+		CInterfaceGroup *g = static_cast< CInterfaceGroup* >( getParser()->createClass( "interface_group" ) );
+		getTopWindow()->addGroup( g );
+		g->setParent( getTopWindow() );
+		g->setIdRecurse( std::string( "group" ) + NLMISC::toString( _WidgetCount ) );
+		_WidgetCount++;
+		onWidgetAdded( g->getId() );
+
+		std::string oldId;
+
+		// Reparent the widgets to the new group
+		for( int i = 0; i < elms.size(); i++ )
+		{
+			CInterfaceElement *e = elms[ i ];
+			oldId = e->getId();
+			CInterfaceGroup *p = e->getParent();
+			if( p != NULL )
+				p->takeElement( e );
+
+			g->addElement( e );
+			e->setParent( g );
+			e->setParentPos( g );
+			e->setParentSize( g );
+			e->setIdRecurse( e->getShortId() );	
+
+			onWidgetMoved( oldId, e->getId() );
+		}
+		elms.clear();
+
+		// Make sure widgets aren't clipped because the group isn't big enough
+		g->spanElements();
+		// Make sure widgets are aligned
+		g->alignElements();
+		// Align the new group to the top window
+		g->alignTo( getTopWindow() );
+		
+		g->setActive( true );
+		
+		return true;
+	}
+
+	bool CWidgetManager::unGroupSelection()
+	{
+		if( editorSelection.size() != 1 )
+			return false;
+
+		// Does the element exist?
+		CInterfaceElement *e = getElementFromId( editorSelection[ 0 ] );
+		if( e == NULL )
+			return false;
+
+		// Is the element a group?
+		CInterfaceGroup *g = dynamic_cast< CInterfaceGroup* >( e );
+		if( g == NULL )
+			return false;
+
+		// Can't blow up a root group :(
+		CInterfaceGroup *p = g->getParent();
+		if( p == NULL )
+			return false;
+
+		// KABOOM!
+		bool ok = g->explode();
+		if( !ok )
+			return false;
+
+		p->delElement( g );
+
+		clearEditorSelection();
+
+		p->updateCoords();
+
+		return true;
+	}
+
 
 	CWidgetManager::CWidgetManager()
 	{
@@ -3458,7 +3641,9 @@ namespace NLGUI
 
 		setScreenWH( 0, 0 );
 
-		currentEditorSelection = "";
+		_GroupSelection = false;
+		multiSelection = false;
+		_WidgetCount = 0;
 	}
 
 	CWidgetManager::~CWidgetManager()
@@ -3472,6 +3657,8 @@ namespace NLGUI
 		curContextHelp = NULL;
 
 		CStringShared::deleteStringMapper();
+
+		editorSelection.clear();
 	}
 
 }

code/studio/src/plugins/gui_editor/editor_message_processor.cpp

@@ -25,35 +25,40 @@ namespace GUIEditor
 {
 	void CEditorMessageProcessor::onDelete()
 	{
-		std::string selection = CWidgetManager::getInstance()->getCurrentEditorSelection();
+		std::vector< std::string > selection;
+
+		CWidgetManager::getInstance()->getEditorSelection( selection );
 		if( selection.empty() )
 			return;
 
 		QMessageBox::StandardButton r =
 			QMessageBox::question( NULL, 
 									tr( "Deleting widget" ),
-									tr( "Are you sure you want to delete %1?" ).arg( selection.c_str() ),
+									tr( "Are you sure you want to delete these?" ),
 									QMessageBox::Yes | QMessageBox::No );
 		if( r != QMessageBox::Yes )
 			return;
 
-		CInterfaceElement *e =
+		for( int i = 0; i < selection.size(); i++ )
-			CWidgetManager::getInstance()->getElementFromId( selection );
-		if( e == NULL )
-			return;
-
-		CInterfaceElement *p = e->getParent();
-		if( p == NULL )
-			return;
-		
-		CInterfaceGroup *g = dynamic_cast< CInterfaceGroup* >( p );
-		if( g == NULL )
-			return;
-
-		if( g->delElement( e ) )
 		{
-			CWidgetManager::getInstance()->setCurrentEditorSelection( "" );
+			CInterfaceElement *e = CWidgetManager::getInstance()->getElementFromId( selection[ i ] );
+			if( e == NULL )
+				continue;
+
+			CInterfaceElement *p = e->getParent();
+			if( p == NULL )
+				continue;
+
+			CInterfaceGroup *g = dynamic_cast< CInterfaceGroup* >( p );
+			if( g == NULL )
+				continue;
+
+			g->delElement( e );
+
 		}
+
+	
+		CWidgetManager::getInstance()->clearEditorSelection();
 	}
 
 	void CEditorMessageProcessor::onAdd( const QString &parentGroup, const QString &widgetType, const QString &name )
@@ -130,5 +135,32 @@ namespace GUIEditor
 		e->setActive( false );
 		e->setActive( true );
 	}
+
+	void CEditorMessageProcessor::onSetGroupSelection( bool b )
+	{
+		CWidgetManager::getInstance()->setGroupSelection( b );
+	}
+
+	void CEditorMessageProcessor::onGroup()
+	{
+		CWidgetManager::getInstance()->groupSelection();
+	}
+
+	void CEditorMessageProcessor::onUngroup()
+	{
+		bool ok = CWidgetManager::getInstance()->unGroupSelection();
+
+		if( !ok )
+		{
+			QMessageBox::critical( NULL,
+									tr( "Ungrouping widgets" ),
+									tr( "Couldn't ungroup widgets." ) );
+		}
+	}
+
+	void CEditorMessageProcessor::onSetMultiSelection( bool b )
+	{
+		CWidgetManager::getInstance()->setMultiSelection( b );
+	}
 }
 

code/studio/src/plugins/gui_editor/editor_message_processor.h

@@ -38,6 +38,10 @@ namespace GUIEditor
 	public Q_SLOTS:
 		void onDelete();
 		void onAdd( const QString &parentGroup, const QString &widgetType, const QString &name );
+		void onSetGroupSelection( bool b );
+		void onGroup();
+		void onUngroup();
+		void onSetMultiSelection( bool b );
 
 	private:
 		CWidgetInfoTree *tree;

code/studio/src/plugins/gui_editor/editor_selection_watcher.cpp

@@ -18,9 +18,9 @@
 
 namespace GUIEditor
 {
-	void CEditorSelectionWatcher::selectionChanged( std::string &newSelection )
+	void CEditorSelectionWatcher::selectionChanged()
 	{
-		Q_EMIT sgnSelectionChanged( newSelection );
+		Q_EMIT sgnSelectionChanged();
 	}
 }
 

code/studio/src/plugins/gui_editor/editor_selection_watcher.h

@@ -27,10 +27,10 @@ namespace GUIEditor
 	public:
 		CEditorSelectionWatcher() : QObject( NULL ){}
 
-		void selectionChanged( std::string &newSelection );
+		void selectionChanged();
 
 	Q_SIGNALS:
-		void sgnSelectionChanged( std::string &id );
+		void sgnSelectionChanged();
 	};
 }
 

code/studio/src/plugins/gui_editor/gui_editor_window.cpp

@@ -283,8 +283,8 @@ namespace GUIEditor
 
 
 		CEditorSelectionWatcher *w = GUICtrl->getWatcher();
-		disconnect( w, SIGNAL( sgnSelectionChanged( std::string& ) ), hierarchyView, SLOT( onSelectionChanged( std::string& ) ) );
+		disconnect( w, SIGNAL( sgnSelectionChanged() ), hierarchyView, SLOT( onSelectionChanged() ) );
-		disconnect( w, SIGNAL( sgnSelectionChanged( std::string& ) ), &browserCtrl, SLOT( onSelectionChanged( std::string& ) ) );
+		disconnect( w, SIGNAL( sgnSelectionChanged() ), &browserCtrl, SLOT( onSelectionChanged() ) );
 
 		projectFiles.clearAll();
 		projectWindow->clear();
@@ -322,8 +322,8 @@ namespace GUIEditor
 		linkList->onGUILoaded();
 
 		CEditorSelectionWatcher *w = GUICtrl->getWatcher();
-		connect( w, SIGNAL( sgnSelectionChanged( std::string& ) ), hierarchyView, SLOT( onSelectionChanged( std::string& ) ) );
+		connect( w, SIGNAL( sgnSelectionChanged() ), hierarchyView, SLOT( onSelectionChanged() ) );
-		connect( w, SIGNAL( sgnSelectionChanged( std::string& ) ), &browserCtrl, SLOT( onSelectionChanged( std::string& ) ) );
+		connect( w, SIGNAL( sgnSelectionChanged() ), &browserCtrl, SLOT( onSelectionChanged() ) );
 	}
 
 	void GUIEditorWindow::onAddWidgetClicked()
@@ -399,6 +399,30 @@ namespace GUIEditor
 			connect( a, SIGNAL( triggered( bool ) ), this, SLOT( onAddWidgetClicked() ) );
 			m->addAction( a );
 
+			a = new QAction( "Group", this );
+			connect( a, SIGNAL( triggered() ), messageProcessor, SLOT( onGroup() ) );
+			m->addAction( a );
+
+			a = new QAction( "Ungroup", this );
+			connect( a, SIGNAL( triggered() ), messageProcessor, SLOT( onUngroup() ) );
+			m->addAction( a );
+
+			
+			// ----------------------------------------------------------------------------------			
+			m->addSeparator();
+
+			a = new QAction( "Select groups", this );
+			a->setCheckable( true );
+			a->setChecked( false );
+			connect( a, SIGNAL( triggered( bool ) ), messageProcessor, SLOT( onSetGroupSelection( bool ) ) );
+			m->addAction( a );
+
+			a = new QAction( "Multiselect", this );
+			a->setCheckable( true );
+			a->setChecked( false );
+			connect( a, SIGNAL( triggered( bool ) ), messageProcessor, SLOT( onSetMultiSelection( bool ) ) );
+			m->addAction( a );
+
 			menu = m;
 		}
 	}

code/studio/src/plugins/gui_editor/property_browser_ctrl.cpp

@@ -436,7 +436,7 @@ namespace GUIEditor
 		browser->clear();
 	}
 
-	void CPropBrowserCtrl::onSelectionChanged( std::string &id )
+	void CPropBrowserCtrl::onSelectionChanged()
 	{
 		if( browser == NULL )
 			return;
@@ -444,14 +444,20 @@ namespace GUIEditor
 		disablePropertyWatchers();
 		browser->clear();
 
-		CInterfaceElement *e = CWidgetManager::getInstance()->getElementFromId( id );
+		std::vector< std::string > selection;
+		CWidgetManager::getInstance()->getEditorSelection( selection );
+
+		if( selection.size() != 1 )
+			return;
+
+		CInterfaceElement *e = CWidgetManager::getInstance()->getElementFromId( selection[ 0 ] );
 		if( e == NULL )
 		{
 			enablePropertyWatchers();
 			return;
 		}
 
-		currentElement = id;
+		currentElement = selection[ 0 ];
 
         std::string n = e->getClassName();
 
@@ -494,6 +500,10 @@ namespace GUIEditor
 			return;
 		e->setProperty( propName.toUtf8().constData(), propValue.toUtf8().constData() );
 
+		CInterfaceGroup *g = e->getParent();
+		if( g != NULL )
+			g->updateCoords();
+		
 		
 		// Make sure the changes are applied
 		bool active = e->getActive();
@@ -514,13 +524,12 @@ namespace GUIEditor
 			return;
 		std::string type = itr->second;
 
+		CInterfaceElement *e = CWidgetManager::getInstance()->getElementFromId( currentElement );
+		if( e == NULL )
+			return;
 
 		if( type == "button_type" )
 		{
-			CInterfaceElement *e = CWidgetManager::getInstance()->getElementFromId( currentElement );
-			if( e == NULL )
-				return;
-
 			std::string v;
 			v = NelButtonType::toString( value );
 			if( v.empty() )
@@ -531,10 +540,6 @@ namespace GUIEditor
 		else
 		if( type == "text_justification" )
 		{
-			CInterfaceElement *e = CWidgetManager::getInstance()->getElementFromId( currentElement );
-			if( e == NULL )
-				return;
-
 			std::string v;
 			v = NelTxtJustification::toString( value );
 			if( v.empty() )
@@ -545,10 +550,6 @@ namespace GUIEditor
 		else
 		if( type == "posref" )
 		{
-			CInterfaceElement *e = CWidgetManager::getInstance()->getElementFromId( currentElement );
-			if( e == NULL )
-				return;
-
 			std::string v = NelPosRef::toString( value );
 			if( v.empty() )
 				return;
@@ -558,10 +559,6 @@ namespace GUIEditor
 		else
 		if( type == "posreftt" )
 		{
-			CInterfaceElement *e = CWidgetManager::getInstance()->getElementFromId( currentElement );
-			if( e == NULL )
-				return;
-
 			std::string v = NelPosRefTT::toString( value );
 			if( v.empty() )
 				return;
@@ -608,10 +605,6 @@ namespace GUIEditor
 		else
 		if( type == "tooltip_parent" )
 		{
-			CInterfaceElement *e = CWidgetManager::getInstance()->getElementFromId( currentElement );
-			if( e == NULL )
-				return;
-
 			std::string v = NelTTParent::toString( value );
 			if( v.empty() )
 				return;
@@ -621,16 +614,18 @@ namespace GUIEditor
 		else
 		if( type == "bitmap_align" )
 		{
-			CInterfaceElement *e = CWidgetManager::getInstance()->getElementFromId( currentElement );
-			if( e == NULL )
-				return;
-
 			std::string v = NelBMAlign::toString( value );
 			if( v.empty() )
 				return;
 
 			e->setProperty( propName.toUtf8().constData(), v );
 		}
+
+
+		CInterfaceGroup *g = e->getParent();
+		if( g != NULL )
+			g->updateCoords();
+
 	}
 
 
@@ -643,6 +638,10 @@ namespace GUIEditor
 			return;
 		
 		e->setProperty( propName.toUtf8().constData(), v.toUtf8().constData() );
+
+		CInterfaceGroup *g = e->getParent();
+		if( g != NULL )
+			g->updateCoords();
 	}
 
 	void CPropBrowserCtrl::onTexturePropertyChanged( QtProperty *p, const QString &v )
@@ -654,6 +653,10 @@ namespace GUIEditor
 			return;
 		
 		e->setProperty( propName.toUtf8().constData(), v.toUtf8().constData() );
+
+		CInterfaceGroup *g = e->getParent();
+		if( g != NULL )
+			g->updateCoords();
 	}
 
 	void CPropBrowserCtrl::enablePropertyWatchers()

code/studio/src/plugins/gui_editor/property_browser_ctrl.h

@@ -59,7 +59,7 @@ namespace GUIEditor
 		void clear();
 
 	public Q_SLOTS:
-		void onSelectionChanged( std::string &id );
+		void onSelectionChanged();
 
 	private Q_SLOTS:
 		void onPropertyChanged( QtProperty *prop, const QVariant &v );

code/studio/src/plugins/gui_editor/widget_hierarchy.cpp

@@ -18,7 +18,6 @@
 #include "widget_hierarchy.h"
 #include "nel/gui/interface_group.h"
 #include "nel/gui/widget_manager.h"
-#include "nel/gui/widget_addition_watcher.h"
 
 namespace
 {
@@ -76,18 +75,24 @@ namespace
 		GUIEditor::WidgetHierarchy *h;
 	};
 
-	class CWidgetAdditionWatcher : public IWidgetAdditionWatcher
+	class CWidgetWatcher : public CWidgetManager::IWidgetWatcher
 	{
 	public:
-		CWidgetAdditionWatcher(){ h = NULL; }
+		CWidgetWatcher(){ h = NULL; }
-		~CWidgetAdditionWatcher(){}
+		~CWidgetWatcher(){}
 
-		void widgetAdded( const std::string &name )
+		void onWidgetAdded( const std::string &name )
 		{
 			if( h != NULL )
 				h->onWidgetAdded( name );
 		}
 
+		void onWidgetMoved( const std::string &oldid, const std::string &newid )
+		{
+			if( h != NULL )
+				h->onWidgetMoved( oldid, newid );
+		}
+
 		void setWidgetHierarchy( GUIEditor::WidgetHierarchy *h ){ this->h = h; }
 
 	private:
@@ -95,7 +100,7 @@ namespace
 	};
 
 	CWidgetDeletionWatcher deletionWatcher;
-	CWidgetAdditionWatcher additionWatcher;
+	CWidgetWatcher widgetwatcher;
 }
 
 namespace GUIEditor
@@ -107,7 +112,7 @@ namespace GUIEditor
 		connect( widgetHT, SIGNAL( itemDoubleClicked( QTreeWidgetItem*, int ) ),
 			this, SLOT( onItemDblClicked( QTreeWidgetItem* ) ) );
 		deletionWatcher.setWidgetHierarchy( this );
-		additionWatcher.setWidgetHierarchy( this );
+		widgetwatcher.setWidgetHierarchy( this );
 	}
 
 	WidgetHierarchy::~WidgetHierarchy()
@@ -117,7 +122,7 @@ namespace GUIEditor
 	void WidgetHierarchy::clearHierarchy()
 	{
 		CInterfaceElement::unregisterDeletionWatcher( &deletionWatcher );
-		CWidgetManager::getInstance()->unregisterAdditionWatcher( &additionWatcher );
+		CWidgetManager::getInstance()->unregisterWidgetWatcher( &widgetwatcher );
 		widgetHT->clear();
 		widgetHierarchyMap.clear();
 	}
@@ -126,7 +131,7 @@ namespace GUIEditor
 	{
 		clearHierarchy();
 		CInterfaceElement::registerDeletionWatcher( &deletionWatcher );
-		CWidgetManager::getInstance()->registerAdditionWatcher( &additionWatcher );
+		CWidgetManager::getInstance()->registerWidgetWatcher( &widgetwatcher );
 
 		CInterfaceGroup *mg = CWidgetManager::getInstance()->getMasterGroupFromId( masterGroup );
 		if( mg != NULL )
@@ -177,6 +182,27 @@ namespace GUIEditor
 		}
 	}
 
+	QTreeWidgetItem* WidgetHierarchy::findItem( const std::string &id )
+	{
+		std::map< std::string, QTreeWidgetItem* >::iterator itr
+			= widgetHierarchyMap.find( id );
+		if( itr == widgetHierarchyMap.end() )
+			return NULL;
+		else
+			return itr->second;
+	}
+
+	QTreeWidgetItem* WidgetHierarchy::findParent( const std::string &id )
+	{
+		// Get the parent's name
+		std::string::size_type p = id.find_last_of( ':' );
+		if( p == std::string::npos )
+			return NULL;
+		std::string parentId = id.substr( 0, p );
+
+		return findItem( parentId );
+	}
+
 	void WidgetHierarchy::onWidgetDeleted( const std::string &id )
 	{
 		std::map< std::string, QTreeWidgetItem* >::iterator itr
@@ -231,16 +257,62 @@ namespace GUIEditor
 		widgetHierarchyMap[ id ] = item;
 	}
 
+	void WidgetHierarchy::onWidgetMoved( const std::string &oldid, const std::string &newid )
+	{
+		QTreeWidgetItem *newParent = NULL;
+		QTreeWidgetItem *item = NULL;
+		QString id;
+
+		newParent = findParent( newid );
+		item = findItem( oldid );
+
+		if( ( newParent == NULL ) || ( item == NULL ) )
+			return;
+
+		// Remove item from old parent
+		QTreeWidgetItem *p = item->parent();
+		if( p != NULL )
+			p->setExpanded( false );
+		p->removeChild( item );
+
+		// Remove reference to old item
+		widgetHierarchyMap.erase( oldid );
+		
+		// Add item to new parent
+		newParent->addChild( item );
+
+		// Add reference to new item
+		widgetHierarchyMap[ newid ] = item;
+
+		selectItem( item );
+	}
+
+	void WidgetHierarchy::selectItem( QTreeWidgetItem *item )
+	{
+		widgetHT->collapseAll();
+
+		QTreeWidgetItem *currItem = item;
+		while( currItem != NULL )
+		{
+			currItem->setExpanded( true );
+			currItem = currItem->parent();
+		}
+
+		widgetHT->setCurrentItem( item );
+		item->setSelected( true );
+	}
+
 	void WidgetHierarchy::getCurrentGroup( QString &g )
 	{
-		std::string s = CWidgetManager::getInstance()->getCurrentEditorSelection();
+		std::vector< std::string > selection;
-		if( s.empty() )
+		CWidgetManager::getInstance()->getEditorSelection( selection );
+		if( selection.size() != 1 )
 		{
 			g = "";
 			return;
 		}
 
-		NLGUI::CInterfaceElement *e = CWidgetManager::getInstance()->getElementFromId( s );
+		NLGUI::CInterfaceElement *e = CWidgetManager::getInstance()->getElementFromId( selection[ 0 ] );
 		if( e == NULL )
 		{
 			g = "";
@@ -271,8 +343,16 @@ namespace GUIEditor
 		currentSelection.clear();
 	}
 
-	void WidgetHierarchy::onSelectionChanged( std::string &newSelection )
+	void WidgetHierarchy::onSelectionChanged()
 	{
+		std::vector< std::string > selection;
+		CWidgetManager::getInstance()->getEditorSelection( selection );
+
+		if( selection.size() != 1 )
+			return;
+
+		std::string newSelection = selection[ 0 ];
+
 		if( newSelection == currentSelection )
 			return;
 
@@ -288,18 +368,11 @@ namespace GUIEditor
 		if( widgetHT->currentItem() != NULL )
 			widgetHT->currentItem()->setSelected( false );
 
-		// expand the tree items, so that we can see the selected item
+		widgetHT->collapseAll();
-		QTreeWidgetItem *item = itr->second;
-		QTreeWidgetItem *currItem = item;
-		while( currItem != NULL )
-		{
-			currItem->setExpanded( true );
-			currItem = currItem->parent();
-		}
 
 		// select the current item
-		item->setSelected( true );
+		QTreeWidgetItem *item = itr->second;
-		widgetHT->setCurrentItem( item );
+		selectItem( item );
 		currentSelection = newSelection;
 	}
 
@@ -308,8 +381,10 @@ namespace GUIEditor
 		if( item->parent() == NULL )
 			return;
 
+		selectItem( item );
+		
 		std::string n = item->text( 0 ).toUtf8().constData();
 		currentSelection = makeFullName( item, n );
-		CWidgetManager::getInstance()->setCurrentEditorSelection( currentSelection );
+		CWidgetManager::getInstance()->selectWidget( currentSelection );
 	}
 }

code/studio/src/plugins/gui_editor/widget_hierarchy.h

@@ -44,15 +44,19 @@ namespace GUIEditor
 
 		void onWidgetDeleted( const std::string &id );
 		void onWidgetAdded( const std::string &id );
+		void onWidgetMoved( const std::string &oldid, const std::string &newid );
 
 		void getCurrentGroup( QString &g );
 
 	private:
 		void buildHierarchy( QTreeWidgetItem *parent, NLGUI::CInterfaceGroup *group );
+		QTreeWidgetItem* findItem( const std::string &id );
+		QTreeWidgetItem* findParent( const std::string &id );
+		void selectItem( QTreeWidgetItem *item );
 
 	public Q_SLOTS:
 		void onGUILoaded();
-		void onSelectionChanged( std::string &newSelection );
+		void onSelectionChanged();
 
 	private Q_SLOTS:
 		void onItemDblClicked( QTreeWidgetItem *item );