Merging last four months of development

1 files changed, 2095 insertions, 0 deletions

diff --git a/indra/llui/llfolderviewitem.cpp b/indra/llui/llfolderviewitem.cpp
new file mode 100755
index 0000000000..fdb4108afb
--- /dev/null
+++ b/indra/llui/llfolderviewitem.cpp
@@ -0,0 +1,2095 @@
+/** 
+* @file llfolderviewitem.cpp
+* @brief Items and folders that can appear in a hierarchical folder view
+*
+* $LicenseInfo:firstyear=2001&license=viewerlgpl$
+* Second Life Viewer Source Code
+* Copyright (C) 2010, Linden Research, Inc.
+* 
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU Lesser General Public
+* License as published by the Free Software Foundation;
+* version 2.1 of the License only.
+* 
+* This library is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+* Lesser General Public License for more details.
+* 
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+* 
+* Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+* $/LicenseInfo$
+*/
+#include "../newview/llviewerprecompiledheaders.h"
+
+#include "llflashtimer.h"
+
+#include "linden_common.h"
+#include "llfolderviewitem.h"
+#include "llfolderview.h"
+#include "llfolderviewmodel.h"
+#include "llpanel.h"
+#include "llcriticaldamp.h"
+#include "llclipboard.h"
+#include "llfocusmgr.h"		// gFocusMgr
+#include "lltrans.h"
+#include "llwindow.h"
+
+///----------------------------------------------------------------------------
+/// Class LLFolderViewItem
+///----------------------------------------------------------------------------
+
+static LLDefaultChildRegistry::Register<LLFolderViewItem> r("folder_view_item");
+
+// statics 
+std::map<U8, LLFontGL*> LLFolderViewItem::sFonts; // map of styles to fonts
+
+bool LLFolderViewItem::sColorSetInitialized = false;
+LLUIColor LLFolderViewItem::sFgColor;
+LLUIColor LLFolderViewItem::sHighlightBgColor;
+LLUIColor LLFolderViewItem::sFlashBgColor;
+LLUIColor LLFolderViewItem::sFocusOutlineColor;
+LLUIColor LLFolderViewItem::sMouseOverColor;
+LLUIColor LLFolderViewItem::sFilterBGColor;
+LLUIColor LLFolderViewItem::sFilterTextColor;
+LLUIColor LLFolderViewItem::sSuffixColor;
+LLUIColor LLFolderViewItem::sSearchStatusColor;
+
+// only integers can be initialized in header
+const F32 LLFolderViewItem::FOLDER_CLOSE_TIME_CONSTANT = 0.02f;
+const F32 LLFolderViewItem::FOLDER_OPEN_TIME_CONSTANT = 0.03f;
+
+const LLColor4U DEFAULT_WHITE(255, 255, 255);
+
+
+//static
+LLFontGL* LLFolderViewItem::getLabelFontForStyle(U8 style)
+{
+	LLFontGL* rtn = sFonts[style];
+	if (!rtn) // grab label font with this style, lazily
+	{
+		LLFontDescriptor labelfontdesc("SansSerif", "Small", style);
+		rtn = LLFontGL::getFont(labelfontdesc);
+		if (!rtn)
+		{
+			rtn = LLFontGL::getFontDefault();
+		}
+		sFonts[style] = rtn;
+	}
+	return rtn;
+}
+
+//static
+void LLFolderViewItem::initClass()
+{
+}
+
+//static
+void LLFolderViewItem::cleanupClass()
+{
+	sFonts.clear();
+}
+
+
+// NOTE: Optimize this, we call it a *lot* when opening a large inventory
+LLFolderViewItem::Params::Params()
+:	root(),
+	listener(),
+	folder_arrow_image("folder_arrow_image"),
+	folder_indentation("folder_indentation"),
+	selection_image("selection_image"),
+	item_height("item_height"),
+	item_top_pad("item_top_pad"),
+	creation_date(),
+	allow_open("allow_open", true),
+	font_color("font_color"),
+	font_highlight_color("font_highlight_color"),
+    left_pad("left_pad", 0),
+    icon_pad("icon_pad", 0),
+    icon_width("icon_width", 0),
+    text_pad("text_pad", 0),
+    text_pad_right("text_pad_right", 0),
+    arrow_size("arrow_size", 0),
+    max_folder_item_overlap("max_folder_item_overlap", 0)
+{ }
+
+// Default constructor
+LLFolderViewItem::LLFolderViewItem(const LLFolderViewItem::Params& p)
+:	LLView(p),
+	mLabelWidth(0),
+	mLabelWidthDirty(false),
+    mLabelPaddingRight(DEFAULT_LABEL_PADDING_RIGHT),
+	mParentFolder( NULL ),
+	mIsSelected( FALSE ),
+	mIsCurSelection( FALSE ),
+	mSelectPending(FALSE),
+	mLabelStyle( LLFontGL::NORMAL ),
+	mHasVisibleChildren(FALSE),
+    mLocalIndentation(p.folder_indentation),
+	mIndentation(0),
+	mItemHeight(p.item_height),
+	mControlLabelRotation(0.f),
+	mDragAndDropTarget(FALSE),
+	mLabel(p.name),
+	mRoot(p.root),
+	mViewModelItem(p.listener),
+	mIsMouseOverTitle(false),
+	mAllowOpen(p.allow_open),
+	mFontColor(p.font_color),
+	mFontHighlightColor(p.font_highlight_color),
+    mLeftPad(p.left_pad),
+    mIconPad(p.icon_pad),
+    mIconWidth(p.icon_width),
+    mTextPad(p.text_pad),
+    mTextPadRight(p.text_pad_right),
+    mArrowSize(p.arrow_size),
+    mMaxFolderItemOverlap(p.max_folder_item_overlap)
+{
+	if (!sColorSetInitialized)
+	{
+		sFgColor = LLUIColorTable::instance().getColor("MenuItemEnabledColor", DEFAULT_WHITE);
+		sHighlightBgColor = LLUIColorTable::instance().getColor("MenuItemHighlightBgColor", DEFAULT_WHITE);
+		sFlashBgColor = LLUIColorTable::instance().getColor("MenuItemFlashBgColor", DEFAULT_WHITE);
+		sFocusOutlineColor = LLUIColorTable::instance().getColor("InventoryFocusOutlineColor", DEFAULT_WHITE);
+		sMouseOverColor = LLUIColorTable::instance().getColor("InventoryMouseOverColor", DEFAULT_WHITE);
+		sFilterBGColor = LLUIColorTable::instance().getColor("FilterBackgroundColor", DEFAULT_WHITE);
+		sFilterTextColor = LLUIColorTable::instance().getColor("FilterTextColor", DEFAULT_WHITE);
+		sSuffixColor = LLUIColorTable::instance().getColor("InventoryItemColor", DEFAULT_WHITE);
+		sSearchStatusColor = LLUIColorTable::instance().getColor("InventorySearchStatusColor", DEFAULT_WHITE);
+		sColorSetInitialized = true;
+	}
+
+	if (mViewModelItem)
+	{
+		mViewModelItem->setFolderViewItem(this);
+	}
+}
+
+// Destroys the object
+LLFolderViewItem::~LLFolderViewItem()
+{
+	mViewModelItem = NULL;
+}
+
+BOOL LLFolderViewItem::postBuild()
+{
+	refresh();
+	return TRUE;
+}
+
+
+LLFolderView* LLFolderViewItem::getRoot()
+{
+	return mRoot;
+}
+
+const LLFolderView* LLFolderViewItem::getRoot() const
+{
+	return mRoot;
+}
+// Returns true if this object is a child (or grandchild, etc.) of potential_ancestor.
+BOOL LLFolderViewItem::isDescendantOf( const LLFolderViewFolder* potential_ancestor )
+{
+	LLFolderViewItem* root = this;
+	while( root->mParentFolder )
+	{
+		if( root->mParentFolder == potential_ancestor )
+		{
+			return TRUE;
+		}
+		root = root->mParentFolder;
+	}
+	return FALSE;
+}
+
+LLFolderViewItem* LLFolderViewItem::getNextOpenNode(BOOL include_children)
+{
+	if (!mParentFolder)
+	{
+		return NULL;
+	}
+
+	LLFolderViewItem* itemp = mParentFolder->getNextFromChild( this, include_children );
+	while(itemp && !itemp->getVisible())
+	{
+		LLFolderViewItem* next_itemp = itemp->mParentFolder->getNextFromChild( itemp, include_children );
+		if (itemp == next_itemp) 
+		{
+			// hit last item
+			return itemp->getVisible() ? itemp : this;
+		}
+		itemp = next_itemp;
+	}
+
+	return itemp;
+}
+
+LLFolderViewItem* LLFolderViewItem::getPreviousOpenNode(BOOL include_children)
+{
+	if (!mParentFolder)
+	{
+		return NULL;
+	}
+
+	LLFolderViewItem* itemp = mParentFolder->getPreviousFromChild( this, include_children );
+
+	// Skip over items that are invisible or are hidden from the UI.
+	while(itemp && !itemp->getVisible())
+	{
+		LLFolderViewItem* next_itemp = itemp->mParentFolder->getPreviousFromChild( itemp, include_children );
+		if (itemp == next_itemp) 
+		{
+			// hit first item
+			return itemp->getVisible() ? itemp : this;
+		}
+		itemp = next_itemp;
+	}
+
+	return itemp;
+}
+
+BOOL LLFolderViewItem::passedFilter(S32 filter_generation) 
+{
+	return getViewModelItem()->passedFilter(filter_generation);
+}
+
+void LLFolderViewItem::refresh()
+{
+	LLFolderViewModelItem& vmi = *getViewModelItem();
+
+	mLabel = vmi.getDisplayName();
+
+	setToolTip(vmi.getName());
+	mIcon = vmi.getIcon();
+	mIconOpen = vmi.getIconOpen();
+	mIconOverlay = vmi.getIconOverlay();
+
+	if (mRoot->useLabelSuffix())
+	{
+		mLabelStyle = vmi.getLabelStyle();
+		mLabelSuffix = vmi.getLabelSuffix();
+	}
+
+	mLabelWidthDirty = true;
+	vmi.dirtyFilter();
+}
+
+// Utility function for LLFolderView
+void LLFolderViewItem::arrangeAndSet(BOOL set_selection,
+									 BOOL take_keyboard_focus)
+{
+	LLFolderView* root = getRoot();
+	if (getParentFolder())
+	{
+	getParentFolder()->requestArrange();
+	}
+	if(set_selection)
+	{
+		getRoot()->setSelection(this, TRUE, take_keyboard_focus);
+		if(root)
+		{
+			root->scrollToShowSelection();
+		}
+	}		
+}
+
+
+std::set<LLFolderViewItem*> LLFolderViewItem::getSelectionList() const
+{
+	std::set<LLFolderViewItem*> selection;
+	return selection;
+}
+
+// addToFolder() returns TRUE if it succeeds. FALSE otherwise
+void LLFolderViewItem::addToFolder(LLFolderViewFolder* folder)
+{
+	folder->addItem(this);
+}
+
+
+// Finds width and height of this object and its children.  Also
+// makes sure that this view and its children are the right size.
+S32 LLFolderViewItem::arrange( S32* width, S32* height )
+{
+	// Only indent deeper items in hierarchy
+	mIndentation = (getParentFolder())
+		? getParentFolder()->getIndentation() + mLocalIndentation
+		: 0;
+	if (mLabelWidthDirty)
+	{
+		mLabelWidth = getLabelXPos() + getLabelFontForStyle(mLabelStyle)->getWidth(mLabel) + getLabelFontForStyle(mLabelStyle)->getWidth(mLabelSuffix) + mLabelPaddingRight; 
+		mLabelWidthDirty = false;
+	}
+
+	*width = llmax(*width, mLabelWidth); 
+
+	// determine if we need to use ellipses to avoid horizontal scroll. EXT-719
+	bool use_ellipses = getRoot()->getUseEllipses();
+	if (use_ellipses)
+	{
+		// limit to set rect to avoid horizontal scrollbar
+		*width = llmin(*width, getRoot()->getRect().getWidth());
+	}
+	*height = getItemHeight();
+	return *height;
+}
+
+S32 LLFolderViewItem::getItemHeight()
+{
+	return mItemHeight;
+}
+
+S32 LLFolderViewItem::getLabelXPos()
+{
+    return getIndentation() + mArrowSize + mTextPad + mIconWidth + mIconPad;
+}
+
+S32 LLFolderViewItem::getIconPad()
+{
+    return mIconPad;
+}
+
+S32 LLFolderViewItem::getTextPad()
+{
+    return mTextPad;
+}
+
+// *TODO: This can be optimized a lot by simply recording that it is
+// selected in the appropriate places, and assuming that set selection
+// means 'deselect' for a leaf item. Do this optimization after
+// multiple selection is implemented to make sure it all plays nice
+// together.
+BOOL LLFolderViewItem::setSelection(LLFolderViewItem* selection, BOOL openitem, BOOL take_keyboard_focus)
+{
+	if (selection == this && !mIsSelected)
+	{
+		selectItem();
+	}
+	else if (mIsSelected)	// Deselect everything else.
+	{
+		deselectItem();
+	}
+	return mIsSelected;
+}
+
+BOOL LLFolderViewItem::changeSelection(LLFolderViewItem* selection, BOOL selected)
+{
+	if (selection == this)
+	{
+		if (mIsSelected)
+		{
+			deselectItem();
+		}
+		else
+		{
+			selectItem();
+		}
+		return TRUE;
+	}
+	return FALSE;
+}
+
+void LLFolderViewItem::deselectItem(void)
+{
+	mIsSelected = FALSE;
+}
+
+void LLFolderViewItem::selectItem(void)
+{
+	if (mIsSelected == FALSE)
+	{
+		mIsSelected = TRUE;
+		getViewModelItem()->selectItem();
+	}
+}
+
+BOOL LLFolderViewItem::isMovable()
+{
+	return getViewModelItem()->isItemMovable();
+}
+
+BOOL LLFolderViewItem::isRemovable()
+{
+	return getViewModelItem()->isItemRemovable();
+}
+
+void LLFolderViewItem::destroyView()
+{
+	getRoot()->removeFromSelectionList(this);
+
+	if (mParentFolder)
+	{
+		// removeView deletes me
+		mParentFolder->extractItem(this);
+	}
+	delete this;
+}
+
+// Call through to the viewed object and return true if it can be
+// removed.
+//BOOL LLFolderViewItem::removeRecursively(BOOL single_item)
+BOOL LLFolderViewItem::remove()
+{
+	if(!isRemovable())
+	{
+		return FALSE;
+	}
+	return getViewModelItem()->removeItem();
+}
+
+// Build an appropriate context menu for the item.
+void LLFolderViewItem::buildContextMenu(LLMenuGL& menu, U32 flags)
+{
+	getViewModelItem()->buildContextMenu(menu, flags);
+}
+
+void LLFolderViewItem::openItem( void )
+{
+	if (mAllowOpen)
+	{
+		getViewModelItem()->openItem();
+	}
+}
+
+void LLFolderViewItem::rename(const std::string& new_name)
+{
+	if( !new_name.empty() )
+	{
+		getViewModelItem()->renameItem(new_name);
+	}
+}
+
+const std::string& LLFolderViewItem::getName( void ) const
+{
+	static const std::string noName("");
+	return getViewModelItem() ? getViewModelItem()->getName() : noName;
+}
+
+// LLView functionality
+BOOL LLFolderViewItem::handleRightMouseDown( S32 x, S32 y, MASK mask )
+{
+	if(!mIsSelected)
+	{
+		getRoot()->setSelection(this, FALSE);
+	}
+	make_ui_sound("UISndClick");
+	return TRUE;
+}
+
+BOOL LLFolderViewItem::handleMouseDown( S32 x, S32 y, MASK mask )
+{
+	if (LLView::childrenHandleMouseDown(x, y, mask))
+	{
+		return TRUE;
+	}
+	
+	// No handler needed for focus lost since this class has no
+	// state that depends on it.
+	gFocusMgr.setMouseCapture( this );
+    
+	if (!mIsSelected)
+	{
+		if(mask & MASK_CONTROL)
+		{
+			getRoot()->changeSelection(this, !mIsSelected);
+		}
+		else if (mask & MASK_SHIFT)
+		{
+			getParentFolder()->extendSelectionTo(this);
+		}
+		else
+		{
+			getRoot()->setSelection(this, FALSE);
+		}
+		make_ui_sound("UISndClick");
+	}
+	else
+	{
+		// If selected, we reserve the decision of deselecting/reselecting to the mouse up moment.
+		// This is necessary so we maintain selection consistent when starting a drag.
+		mSelectPending = TRUE;
+	}
+
+	mDragStartX = x;
+	mDragStartY = y;
+	return TRUE;
+}
+
+BOOL LLFolderViewItem::handleHover( S32 x, S32 y, MASK mask )
+{
+	static LLCachedControl<S32> drag_and_drop_threshold(*LLUI::sSettingGroups["config"],"DragAndDropDistanceThreshold");
+
+	mIsMouseOverTitle = (y > (getRect().getHeight() - mItemHeight));
+
+	if( hasMouseCapture() && isMovable() )
+	{
+			LLFolderView* root = getRoot();
+
+		if( (x - mDragStartX) * (x - mDragStartX) + (y - mDragStartY) * (y - mDragStartY) > drag_and_drop_threshold() * drag_and_drop_threshold() 
+			&& root->getCurSelectedItem()
+			&& root->startDrag())
+		{
+					// RN: when starting drag and drop, clear out last auto-open
+					root->autoOpenTest(NULL);
+					root->setShowSelectionContext(TRUE);
+
+					// Release keyboard focus, so that if stuff is dropped into the
+					// world, pressing the delete key won't blow away the inventory
+					// item.
+					gFocusMgr.setKeyboardFocus(NULL);
+
+			getWindow()->setCursor(UI_CURSOR_ARROW);
+		}
+		else if (x != mDragStartX || y != mDragStartY)
+		{
+			getWindow()->setCursor(UI_CURSOR_NOLOCKED);
+		}
+
+		return TRUE;
+	}
+	else
+	{
+		getRoot()->setShowSelectionContext(FALSE);
+		getWindow()->setCursor(UI_CURSOR_ARROW);
+		// let parent handle this then...
+		return FALSE;
+	}
+}
+
+
+BOOL LLFolderViewItem::handleDoubleClick( S32 x, S32 y, MASK mask )
+{
+	openItem();
+	return TRUE;
+}
+
+BOOL LLFolderViewItem::handleMouseUp( S32 x, S32 y, MASK mask )
+{
+	if (LLView::childrenHandleMouseUp(x, y, mask))
+	{
+		return TRUE;
+	}
+	
+	// if mouse hasn't moved since mouse down...
+	if ( pointInView(x, y) && mSelectPending )
+	{
+		//...then select
+		if(mask & MASK_CONTROL)
+		{
+			getRoot()->changeSelection(this, !mIsSelected);
+		}
+		else if (mask & MASK_SHIFT)
+		{
+			getParentFolder()->extendSelectionTo(this);
+		}
+		else
+		{
+			getRoot()->setSelection(this, FALSE);
+		}
+	}
+
+	mSelectPending = FALSE;
+
+	if( hasMouseCapture() )
+	{
+		if (getRoot())
+		{
+		getRoot()->setShowSelectionContext(FALSE);
+		}
+		gFocusMgr.setMouseCapture( NULL );
+	}
+	return TRUE;
+}
+
+void LLFolderViewItem::onMouseLeave(S32 x, S32 y, MASK mask)
+{
+	mIsMouseOverTitle = false;
+}
+
+BOOL LLFolderViewItem::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
+										 EDragAndDropType cargo_type,
+										 void* cargo_data,
+										 EAcceptance* accept,
+										 std::string& tooltip_msg)
+{
+	BOOL handled = FALSE;
+	BOOL accepted = getViewModelItem()->dragOrDrop(mask,drop,cargo_type,cargo_data, tooltip_msg);
+		handled = accepted;
+		if (accepted)
+		{
+			mDragAndDropTarget = TRUE;
+			*accept = ACCEPT_YES_MULTI;
+		}
+		else
+		{
+			*accept = ACCEPT_NO;
+		}
+	if(mParentFolder && !handled)
+	{
+		// store this item to get it in LLFolderBridge::dragItemIntoFolder on drop event.
+		mRoot->setDraggingOverItem(this);
+		handled = mParentFolder->handleDragAndDropFromChild(mask,drop,cargo_type,cargo_data,accept,tooltip_msg);
+		mRoot->setDraggingOverItem(NULL);
+	}
+	if (handled)
+	{
+		lldebugst(LLERR_USER_INPUT) << "dragAndDrop handled by LLFolderViewItem" << llendl;
+	}
+
+	return handled;
+}
+
+void LLFolderViewItem::drawOpenFolderArrow(const Params& default_params, const LLUIColor& fg_color)
+{
+	//--------------------------------------------------------------------------------//
+	// Draw open folder arrow
+	//
+	const S32 TOP_PAD = default_params.item_top_pad;
+
+	if (hasVisibleChildren() || getViewModelItem()->hasChildren())
+	{
+		LLUIImage* arrow_image = default_params.folder_arrow_image;
+		gl_draw_scaled_rotated_image(
+			mIndentation, getRect().getHeight() - mArrowSize - mTextPad - TOP_PAD,
+			mArrowSize, mArrowSize, mControlLabelRotation, arrow_image->getImage(), fg_color);
+	}
+}
+
+/*virtual*/ bool LLFolderViewItem::isHighlightAllowed()
+{
+	return mIsSelected;
+}
+
+/*virtual*/ bool LLFolderViewItem::isHighlightActive()
+{
+	return mIsCurSelection;
+}
+
+void LLFolderViewItem::drawHighlight(const BOOL showContent, const BOOL hasKeyboardFocus, const LLUIColor &selectColor, const LLUIColor &flashColor,  
+                                                        const LLUIColor &focusOutlineColor, const LLUIColor &mouseOverColor)
+{
+    const S32 focus_top = getRect().getHeight();
+    const S32 focus_bottom = getRect().getHeight() - mItemHeight;
+    const bool folder_open = (getRect().getHeight() > mItemHeight + 4);
+    const S32 FOCUS_LEFT = 1;
+	
+	// Determine which background color to use for highlighting
+	LLUIColor bgColor = (isFlashing() ? flashColor : selectColor);
+
+    //--------------------------------------------------------------------------------//
+    // Draw highlight for selected items
+	// Note: Always render "current" item or flashing item, only render other selected 
+	// items if mShowSingleSelection is FALSE.
+    //
+    if (isHighlightAllowed())	
+    							
+    {
+        gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+		
+		// Highlight for selected but not current items
+        if (!isHighlightActive() && !isFlashing())
+        {
+			LLColor4 bg_color = bgColor;
+            // do time-based fade of extra objects
+            F32 fade_time = (getRoot() ? getRoot()->getSelectionFadeElapsedTime() : 0.0f);
+            if (getRoot() && getRoot()->getShowSingleSelection())
+            {
+                // fading out
+                bg_color.mV[VALPHA] = clamp_rescale(fade_time, 0.f, 0.4f, bg_color.mV[VALPHA], 0.f);
+            }
+            else
+            {
+                // fading in
+                bg_color.mV[VALPHA] = clamp_rescale(fade_time, 0.f, 0.4f, 0.f, bg_color.mV[VALPHA]);
+            }
+        	gl_rect_2d(FOCUS_LEFT,
+					   focus_top,
+					   getRect().getWidth() - 2,
+					   focus_bottom,
+					   bg_color, hasKeyboardFocus);
+        }
+
+		// Highlight for currently selected or flashing item
+        if (isHighlightActive())
+        {
+			// Background
+        	gl_rect_2d(FOCUS_LEFT,
+                focus_top,
+                getRect().getWidth() - 2,
+                focus_bottom,
+                bgColor, hasKeyboardFocus);
+			// Outline
+            gl_rect_2d(FOCUS_LEFT, 
+                focus_top, 
+                getRect().getWidth() - 2,
+                focus_bottom,
+                focusOutlineColor, FALSE);
+        }
+
+        if (folder_open)
+        {
+            gl_rect_2d(FOCUS_LEFT,
+                focus_bottom + 1, // overlap with bottom edge of above rect
+                getRect().getWidth() - 2,
+                0,
+                focusOutlineColor, FALSE);
+            if (showContent && !isFlashing())
+            {
+                gl_rect_2d(FOCUS_LEFT,
+                    focus_bottom + 1,
+                    getRect().getWidth() - 2,
+                    0,
+                    bgColor, TRUE);
+            }
+        }
+    }
+    else if (mIsMouseOverTitle)
+    {
+        gl_rect_2d(FOCUS_LEFT,
+            focus_top, 
+            getRect().getWidth() - 2,
+            focus_bottom,
+            mouseOverColor, FALSE);
+    }
+
+    //--------------------------------------------------------------------------------//
+    // Draw DragNDrop highlight
+    //
+    if (mDragAndDropTarget)
+    {
+        gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
+        gl_rect_2d(FOCUS_LEFT, 
+            focus_top, 
+            getRect().getWidth() - 2,
+            focus_bottom,
+            bgColor, FALSE);
+        if (folder_open)
+        {
+            gl_rect_2d(FOCUS_LEFT,
+                focus_bottom + 1, // overlap with bottom edge of above rect
+                getRect().getWidth() - 2,
+                0,
+                bgColor, FALSE);
+        }
+        mDragAndDropTarget = FALSE;
+    }
+}
+
+void LLFolderViewItem::drawLabel(const LLFontGL * font, const F32 x, const F32 y, const LLColor4& color, F32 &right_x)
+{
+    //--------------------------------------------------------------------------------//
+    // Draw the actual label text
+    //
+    font->renderUTF8(mLabel, 0, x, y, color,
+        LLFontGL::LEFT, LLFontGL::BOTTOM, LLFontGL::NORMAL, LLFontGL::NO_SHADOW,
+        S32_MAX, getRect().getWidth() - (S32) x - mLabelPaddingRight, &right_x, TRUE);
+}
+
+void LLFolderViewItem::draw()
+{
+    const BOOL show_context = (getRoot() ? getRoot()->getShowSelectionContext() : FALSE);
+    const BOOL filled = show_context || (getRoot() ? getRoot()->getParentPanel()->hasFocus() : FALSE); // If we have keyboard focus, draw selection filled
+
+	const Params& default_params = LLUICtrlFactory::getDefaultParams<LLFolderViewItem>();
+	const S32 TOP_PAD = default_params.item_top_pad;
+	
+	const LLFontGL* font = getLabelFontForStyle(mLabelStyle);
+
+    getViewModelItem()->update();
+
+    drawOpenFolderArrow(default_params, sFgColor);
+
+    drawHighlight(show_context, filled, sHighlightBgColor, sFlashBgColor, sFocusOutlineColor, sMouseOverColor);
+
+	//--------------------------------------------------------------------------------//
+	// Draw open icon
+	//
+	const S32 icon_x = mIndentation + mArrowSize + mTextPad;
+	if (!mIconOpen.isNull() && (llabs(mControlLabelRotation) > 80)) // For open folders
+ 	{
+		mIconOpen->draw(icon_x, getRect().getHeight() - mIconOpen->getHeight() - TOP_PAD + 1);
+	}
+	else if (mIcon)
+	{
+ 		mIcon->draw(icon_x, getRect().getHeight() - mIcon->getHeight() - TOP_PAD + 1);
+ 	}
+
+	if (mIconOverlay && getRoot()->showItemLinkOverlays())
+	{
+		mIconOverlay->draw(icon_x, getRect().getHeight() - mIcon->getHeight() - TOP_PAD + 1);
+	}
+
+	//--------------------------------------------------------------------------------//
+	// Exit if no label to draw
+	//
+	if (mLabel.empty())
+	{
+		return;
+	}
+
+	std::string::size_type filter_string_length = mViewModelItem->hasFilterStringMatch() ? mViewModelItem->getFilterStringSize() : 0;
+	F32 right_x  = 0;
+	F32 y = (F32)getRect().getHeight() - font->getLineHeight() - (F32)mTextPad - (F32)TOP_PAD;
+	F32 text_left = (F32)getLabelXPos();
+	std::string combined_string = mLabel + mLabelSuffix;
+
+	if (filter_string_length > 0)
+	{
+		S32 left = llround(text_left) + font->getWidth(combined_string, 0, mViewModelItem->getFilterStringOffset()) - 2;
+		S32 right = left + font->getWidth(combined_string, mViewModelItem->getFilterStringOffset(), filter_string_length) + 2;
+		S32 bottom = llfloor(getRect().getHeight() - font->getLineHeight() - 3 - TOP_PAD);
+		S32 top = getRect().getHeight() - TOP_PAD;
+
+		LLUIImage* box_image = default_params.selection_image;
+		LLRect box_rect(left, top, right, bottom);
+		box_image->draw(box_rect, sFilterBGColor);
+    }
+
+    LLColor4 color = (mIsSelected && filled) ? mFontHighlightColor : mFontColor;
+    drawLabel(font, text_left, y, color, right_x);
+
+	//--------------------------------------------------------------------------------//
+	// Draw label suffix
+	//
+	if (!mLabelSuffix.empty())
+	{
+		font->renderUTF8( mLabelSuffix, 0, right_x, y, sSuffixColor,
+						  LLFontGL::LEFT, LLFontGL::BOTTOM, LLFontGL::NORMAL, LLFontGL::NO_SHADOW,
+						  S32_MAX, S32_MAX, &right_x, FALSE );
+	}
+    
+	//--------------------------------------------------------------------------------//
+	// Highlight string match
+	//
+    if (filter_string_length > 0)
+    {
+        F32 match_string_left = text_left + font->getWidthF32(combined_string, 0, mViewModelItem->getFilterStringOffset());
+        F32 yy = (F32)getRect().getHeight() - font->getLineHeight() - (F32)mTextPad - (F32)TOP_PAD;
+        font->renderUTF8( combined_string, mViewModelItem->getFilterStringOffset(), match_string_left, yy,
+            sFilterTextColor, LLFontGL::LEFT, LLFontGL::BOTTOM, LLFontGL::NORMAL, LLFontGL::NO_SHADOW,
+            filter_string_length, S32_MAX, &right_x, FALSE );
+    }
+
+    //Gilbert Linden 9-20-2012: Although this should be legal, removing it because it causes the mLabelSuffix rendering to
+    //be distorted...oddly. I initially added this in but didn't need it after all. So removing to prevent unnecessary bug.
+    //LLView::draw();
+}
+
+const LLFolderViewModelInterface* LLFolderViewItem::getFolderViewModel( void ) const
+{
+	return getRoot()->getFolderViewModel();
+}
+
+LLFolderViewModelInterface* LLFolderViewItem::getFolderViewModel( void )
+{
+	return getRoot()->getFolderViewModel();
+}
+
+bool LLFolderViewItem::isInSelection() const
+{
+	return mIsSelected || (mParentFolder && mParentFolder->isInSelection());
+}
+
+
+
+///----------------------------------------------------------------------------
+/// Class LLFolderViewFolder
+///----------------------------------------------------------------------------
+
+LLFolderViewFolder::LLFolderViewFolder( const LLFolderViewItem::Params& p ): 
+	LLFolderViewItem( p ),
+	mIsOpen(FALSE),
+	mExpanderHighlighted(FALSE),
+	mCurHeight(0.f),
+	mTargetHeight(0.f),
+	mAutoOpenCountdown(0.f),
+	mLastArrangeGeneration( -1 ),
+	mLastCalculatedWidth(0)
+{
+}
+
+void LLFolderViewFolder::updateLabelRotation()
+{
+	if (mAutoOpenCountdown != 0.f)
+	{
+		mControlLabelRotation = mAutoOpenCountdown * -90.f;
+	}
+	else if (isOpen())
+	{
+		mControlLabelRotation = lerp(mControlLabelRotation, -90.f, LLCriticalDamp::getInterpolant(0.04f));
+	}
+	else
+	{
+		mControlLabelRotation = lerp(mControlLabelRotation, 0.f, LLCriticalDamp::getInterpolant(0.025f));
+	}
+}
+
+// Destroys the object
+LLFolderViewFolder::~LLFolderViewFolder( void )
+{
+	// The LLView base class takes care of object destruction. make sure that we
+	// don't have mouse or keyboard focus
+	gFocusMgr.releaseFocusIfNeeded( this ); // calls onCommit()
+}
+
+// addToFolder() returns TRUE if it succeeds. FALSE otherwise
+void LLFolderViewFolder::addToFolder(LLFolderViewFolder* folder)
+{
+	folder->addFolder(this);
+}
+
+static LLFastTimer::DeclareTimer FTM_ARRANGE("Arrange");
+
+// Finds width and height of this object and its children. Also
+// makes sure that this view and its children are the right size.
+S32 LLFolderViewFolder::arrange( S32* width, S32* height )
+{
+	// sort before laying out contents
+	getRoot()->getFolderViewModel()->sort(this);
+
+	LLFastTimer t2(FTM_ARRANGE);
+
+	// evaluate mHasVisibleChildren
+	mHasVisibleChildren = false;
+	if (getViewModelItem()->descendantsPassedFilter())
+	{
+		// We have to verify that there's at least one child that's not filtered out
+		bool found = false;
+		// Try the items first
+		for (items_t::iterator iit = mItems.begin(); iit != mItems.end(); ++iit)
+		{
+			LLFolderViewItem* itemp = (*iit);
+			found = itemp->passedFilter();
+			if (found)
+				break;
+		}
+		if (!found)
+		{
+			// If no item found, try the folders
+			for (folders_t::iterator fit = mFolders.begin(); fit != mFolders.end(); ++fit)
+			{
+				LLFolderViewFolder* folderp = (*fit);
+				found = folderp->passedFilter();
+				if (found)
+					break;
+			}
+		}
+
+		mHasVisibleChildren = found;
+	}
+
+	// calculate height as a single item (without any children), and reshapes rectangle to match
+	LLFolderViewItem::arrange( width, height );
+
+	// clamp existing animated height so as to never get smaller than a single item
+	mCurHeight = llmax((F32)*height, mCurHeight);
+
+	// initialize running height value as height of single item in case we have no children
+	F32 running_height = (F32)*height;
+	F32 target_height = (F32)*height;
+
+	// are my children visible?
+	if (needsArrange())
+	{
+		// set last arrange generation first, in case children are animating
+		// and need to be arranged again
+		mLastArrangeGeneration = getRoot()->getArrangeGeneration();
+		if (isOpen())
+		{
+			// Add sizes of children
+			S32 parent_item_height = getRect().getHeight();
+
+			for(folders_t::iterator fit = mFolders.begin(); fit != mFolders.end(); ++fit)
+			{
+				LLFolderViewFolder* folderp = (*fit);
+				folderp->setVisible(folderp->passedFilter()); // passed filter or has descendants that passed filter
+
+				if (folderp->getVisible())
+				{
+					S32 child_width = *width;
+					S32 child_height = 0;
+					S32 child_top = parent_item_height - llround(running_height);
+
+					target_height += folderp->arrange( &child_width, &child_height );
+
+					running_height += (F32)child_height;
+					*width = llmax(*width, child_width);
+					folderp->setOrigin( 0, child_top - folderp->getRect().getHeight() );
+				}
+			}
+			for(items_t::iterator iit = mItems.begin();
+				iit != mItems.end(); ++iit)
+			{
+				LLFolderViewItem* itemp = (*iit);
+				itemp->setVisible(itemp->passedFilter());
+
+				if (itemp->getVisible())
+				{
+					S32 child_width = *width;
+					S32 child_height = 0;
+					S32 child_top = parent_item_height - llround(running_height);
+
+					target_height += itemp->arrange( &child_width, &child_height );
+					// don't change width, as this item is as wide as its parent folder by construction
+					itemp->reshape( itemp->getRect().getWidth(), child_height);
+
+					running_height += (F32)child_height;
+					*width = llmax(*width, child_width);
+					itemp->setOrigin( 0, child_top - itemp->getRect().getHeight() );
+				}
+			}
+		}
+
+		mTargetHeight = target_height;
+		// cache this width so next time we can just return it
+		mLastCalculatedWidth = *width;
+	}
+	else
+	{
+		// just use existing width
+		*width = mLastCalculatedWidth;
+	}
+
+	// animate current height towards target height
+	if (llabs(mCurHeight - mTargetHeight) > 1.f)
+	{
+		mCurHeight = lerp(mCurHeight, mTargetHeight, LLCriticalDamp::getInterpolant(isOpen() ? FOLDER_OPEN_TIME_CONSTANT : FOLDER_CLOSE_TIME_CONSTANT));
+
+		requestArrange();
+
+		// hide child elements that fall out of current animated height
+		for (folders_t::iterator iter = mFolders.begin();
+			iter != mFolders.end();)
+		{
+			folders_t::iterator fit = iter++;
+			// number of pixels that bottom of folder label is from top of parent folder
+			if (getRect().getHeight() - (*fit)->getRect().mTop + (*fit)->getItemHeight() 
+				> llround(mCurHeight) + mMaxFolderItemOverlap)
+			{
+				// hide if beyond current folder height
+				(*fit)->setVisible(FALSE);
+			}
+		}
+
+		for (items_t::iterator iter = mItems.begin();
+			iter != mItems.end();)
+		{
+			items_t::iterator iit = iter++;
+			// number of pixels that bottom of item label is from top of parent folder
+			if (getRect().getHeight() - (*iit)->getRect().mBottom
+				> llround(mCurHeight) + mMaxFolderItemOverlap)
+			{
+				(*iit)->setVisible(FALSE);
+			}
+		}
+	}
+	else
+	{
+		mCurHeight = mTargetHeight;
+	}
+
+	// don't change width as this item is already as wide as its parent folder
+	reshape(getRect().getWidth(),llround(mCurHeight));
+
+	// pass current height value back to parent
+	*height = llround(mCurHeight);
+
+	return llround(mTargetHeight);
+}
+
+BOOL LLFolderViewFolder::needsArrange()
+{
+	return mLastArrangeGeneration < getRoot()->getArrangeGeneration(); 
+}
+
+// Passes selection information on to children and record selection
+// information if necessary.
+BOOL LLFolderViewFolder::setSelection(LLFolderViewItem* selection, BOOL openitem,
+                                      BOOL take_keyboard_focus)
+{
+	BOOL rv = FALSE;
+	if (selection == this)
+	{
+		if (!isSelected())
+		{
+			selectItem();
+		}
+		rv = TRUE;
+	}
+	else
+	{
+		if (isSelected())
+		{
+			deselectItem();
+		}
+		rv = FALSE;
+	}
+	BOOL child_selected = FALSE;
+
+	for (folders_t::iterator iter = mFolders.begin();
+		iter != mFolders.end();)
+	{
+		folders_t::iterator fit = iter++;
+		if((*fit)->setSelection(selection, openitem, take_keyboard_focus))
+		{
+			rv = TRUE;
+			child_selected = TRUE;
+		}
+	}
+	for (items_t::iterator iter = mItems.begin();
+		iter != mItems.end();)
+	{
+		items_t::iterator iit = iter++;
+		if((*iit)->setSelection(selection, openitem, take_keyboard_focus))
+		{
+			rv = TRUE;
+			child_selected = TRUE;
+		}
+	}
+	if(openitem && child_selected)
+	{
+		setOpenArrangeRecursively(TRUE);
+	}
+	return rv;
+}
+
+// This method is used to change the selection of an item.
+// Recursively traverse all children; if 'selection' is 'this' then change
+// the select status if necessary.
+// Returns TRUE if the selection state of this folder, or of a child, was changed.
+BOOL LLFolderViewFolder::changeSelection(LLFolderViewItem* selection, BOOL selected)
+{
+	BOOL rv = FALSE;
+	if(selection == this)
+	{
+		if (isSelected() != selected)
+		{
+			rv = TRUE;
+			if (selected)
+			{
+				selectItem();
+			}
+			else
+			{
+				deselectItem();
+			}
+		}
+	}
+
+	for (folders_t::iterator iter = mFolders.begin();
+		iter != mFolders.end();)
+	{
+		folders_t::iterator fit = iter++;
+		if((*fit)->changeSelection(selection, selected))
+		{
+			rv = TRUE;
+		}
+	}
+	for (items_t::iterator iter = mItems.begin();
+		iter != mItems.end();)
+	{
+		items_t::iterator iit = iter++;
+		if((*iit)->changeSelection(selection, selected))
+		{
+			rv = TRUE;
+		}
+	}
+	return rv;
+}
+
+LLFolderViewFolder* LLFolderViewFolder::getCommonAncestor(LLFolderViewItem* item_a, LLFolderViewItem* item_b, bool& reverse)
+{
+	if (!item_a->getParentFolder() || !item_b->getParentFolder()) return NULL;
+
+	std::deque<LLFolderViewFolder*> item_a_ancestors;
+
+	LLFolderViewFolder* parent = item_a->getParentFolder();
+	while(parent)
+	{
+		item_a_ancestors.push_back(parent);
+		parent = parent->getParentFolder();
+	}
+
+	std::deque<LLFolderViewFolder*> item_b_ancestors;
+	
+	parent = item_b->getParentFolder();
+	while(parent)
+	{
+		item_b_ancestors.push_back(parent);
+		parent = parent->getParentFolder();
+	}
+
+	LLFolderViewFolder* common_ancestor = item_a->getRoot();
+
+	while(item_a_ancestors.size() > item_b_ancestors.size())
+	{
+		item_a = item_a_ancestors.front();
+		item_a_ancestors.pop_front();
+	}
+
+	while(item_b_ancestors.size() > item_a_ancestors.size())
+	{
+		item_b = item_b_ancestors.front();
+		item_b_ancestors.pop_front();
+	}
+
+	while(item_a_ancestors.size())
+	{
+		common_ancestor = item_a_ancestors.front();
+
+		if (item_a_ancestors.front() == item_b_ancestors.front())
+		{
+			// which came first, sibling a or sibling b?
+			for (folders_t::iterator it = common_ancestor->mFolders.begin(), end_it = common_ancestor->mFolders.end();
+				it != end_it;
+				++it)
+			{
+				LLFolderViewItem* item = *it;
+
+				if (item == item_a)
+				{
+					reverse = false;
+					return common_ancestor;
+				}
+				if (item == item_b)
+				{
+					reverse = true;
+					return common_ancestor;
+				}
+			}
+
+			for (items_t::iterator it = common_ancestor->mItems.begin(), end_it = common_ancestor->mItems.end();
+				it != end_it;
+				++it)
+			{
+				LLFolderViewItem* item = *it;
+
+				if (item == item_a)
+				{
+					reverse = false;
+					return common_ancestor;
+				}
+				if (item == item_b)
+				{
+					reverse = true;
+					return common_ancestor;
+				}
+			}
+			break;
+		}
+
+		item_a = item_a_ancestors.front();
+		item_a_ancestors.pop_front();
+		item_b = item_b_ancestors.front();
+		item_b_ancestors.pop_front();
+	}
+
+	return NULL;
+}
+
+void LLFolderViewFolder::gatherChildRangeExclusive(LLFolderViewItem* start, LLFolderViewItem* end, bool reverse, std::vector<LLFolderViewItem*>& items)
+{
+	bool selecting = start == NULL;
+	if (reverse)
+	{
+		for (items_t::reverse_iterator it = mItems.rbegin(), end_it = mItems.rend();
+			it != end_it;
+			++it)
+		{
+			if (*it == end)
+			{
+				return;
+			}
+			if (selecting)
+			{
+				items.push_back(*it);
+			}
+
+			if (*it == start)
+			{
+				selecting = true;
+			}
+		}
+		for (folders_t::reverse_iterator it = mFolders.rbegin(), end_it = mFolders.rend();
+			it != end_it;
+			++it)
+		{
+			if (*it == end)
+			{
+				return;
+			}
+
+			if (selecting)
+			{
+				items.push_back(*it);
+			}
+
+			if (*it == start)
+			{
+				selecting = true;
+			}
+		}
+	}
+	else
+	{
+		for (folders_t::iterator it = mFolders.begin(), end_it = mFolders.end();
+			it != end_it;
+			++it)
+		{
+			if (*it == end)
+			{
+				return;
+			}
+
+			if (selecting)
+			{
+				items.push_back(*it);
+			}
+
+			if (*it == start)
+			{
+				selecting = true;
+			}
+		}
+		for (items_t::iterator it = mItems.begin(), end_it = mItems.end();
+			it != end_it;
+			++it)
+		{
+			if (*it == end)
+			{
+				return;
+			}
+
+			if (selecting)
+			{
+				items.push_back(*it);
+			}
+
+			if (*it == start)
+			{
+				selecting = true;
+			}
+		}
+	}
+}
+
+void LLFolderViewFolder::extendSelectionTo(LLFolderViewItem* new_selection)
+{
+	if (getRoot()->getAllowMultiSelect() == FALSE) return;
+
+	LLFolderViewItem* cur_selected_item = getRoot()->getCurSelectedItem();
+	if (cur_selected_item == NULL)
+	{
+		cur_selected_item = new_selection;
+	}
+
+
+	bool reverse = false;
+	LLFolderViewFolder* common_ancestor = getCommonAncestor(cur_selected_item, new_selection, reverse);
+	if (!common_ancestor) return;
+
+	LLFolderViewItem* last_selected_item_from_cur = cur_selected_item;
+	LLFolderViewFolder* cur_folder = cur_selected_item->getParentFolder();
+
+	std::vector<LLFolderViewItem*> items_to_select_forward;
+
+	while(cur_folder != common_ancestor)
+	{
+		cur_folder->gatherChildRangeExclusive(last_selected_item_from_cur, NULL, reverse, items_to_select_forward);
+			
+		last_selected_item_from_cur = cur_folder;
+		cur_folder = cur_folder->getParentFolder();
+	}
+
+	std::vector<LLFolderViewItem*> items_to_select_reverse;
+
+	LLFolderViewItem* last_selected_item_from_new = new_selection;
+	cur_folder = new_selection->getParentFolder();
+	while(cur_folder != common_ancestor)
+	{
+		cur_folder->gatherChildRangeExclusive(last_selected_item_from_new, NULL, !reverse, items_to_select_reverse);
+
+		last_selected_item_from_new = cur_folder;
+		cur_folder = cur_folder->getParentFolder();
+	}
+
+	common_ancestor->gatherChildRangeExclusive(last_selected_item_from_cur, last_selected_item_from_new, reverse, items_to_select_forward);
+
+	for (std::vector<LLFolderViewItem*>::reverse_iterator it = items_to_select_reverse.rbegin(), end_it = items_to_select_reverse.rend();
+		it != end_it;
+		++it)
+	{
+		items_to_select_forward.push_back(*it);
+	}
+
+	LLFolderView* root = getRoot();
+
+	for (std::vector<LLFolderViewItem*>::iterator it = items_to_select_forward.begin(), end_it = items_to_select_forward.end();
+		it != end_it;
+		++it)
+	{
+		LLFolderViewItem* item = *it;
+		if (item->isSelected())
+		{
+			root->removeFromSelectionList(item);
+		}
+		else
+		{
+			item->selectItem();
+		}
+		root->addToSelectionList(item);
+	}
+
+	if (new_selection->isSelected())
+	{
+		root->removeFromSelectionList(new_selection);
+	}
+	else
+	{
+		new_selection->selectItem();
+	}
+	root->addToSelectionList(new_selection);
+}
+
+
+void LLFolderViewFolder::destroyView()
+{
+    while (!mItems.empty())
+    {
+    	LLFolderViewItem *itemp = mItems.back();
+    	itemp->destroyView(); // LLFolderViewItem::destroyView() removes entry from mItems
+    }
+
+	while (!mFolders.empty())
+	{
+		LLFolderViewFolder *folderp = mFolders.back();
+		folderp->destroyView(); // LLFolderVievFolder::destroyView() removes entry from mFolders
+	}
+
+	LLFolderViewItem::destroyView();
+}
+
+// extractItem() removes the specified item from the folder, but
+// doesn't delete it.
+void LLFolderViewFolder::extractItem( LLFolderViewItem* item )
+{
+	if (item->isSelected())
+		getRoot()->clearSelection();
+	items_t::iterator it = std::find(mItems.begin(), mItems.end(), item);
+	if(it == mItems.end())
+	{
+		// This is an evil downcast. However, it's only doing
+		// pointer comparison to find if (which it should be ) the
+		// item is in the container, so it's pretty safe.
+		LLFolderViewFolder* f = static_cast<LLFolderViewFolder*>(item);
+		folders_t::iterator ft;
+		ft = std::find(mFolders.begin(), mFolders.end(), f);
+		if (ft != mFolders.end())
+		{
+			mFolders.erase(ft);
+		}
+	}
+	else
+	{
+		mItems.erase(it);
+	}
+	//item has been removed, need to update filter
+	getViewModelItem()->removeChild(item->getViewModelItem());
+	//because an item is going away regardless of filter status, force rearrange
+	requestArrange();
+	removeChild(item);
+}
+
+BOOL LLFolderViewFolder::isMovable()
+{
+	if( !(getViewModelItem()->isItemMovable()) )
+	{
+			return FALSE;
+		}
+
+		for (items_t::iterator iter = mItems.begin();
+			iter != mItems.end();)
+		{
+			items_t::iterator iit = iter++;
+			if(!(*iit)->isMovable())
+			{
+				return FALSE;
+			}
+		}
+
+		for (folders_t::iterator iter = mFolders.begin();
+			iter != mFolders.end();)
+		{
+			folders_t::iterator fit = iter++;
+			if(!(*fit)->isMovable())
+			{
+				return FALSE;
+			}
+		}
+	return TRUE;
+}
+
+
+BOOL LLFolderViewFolder::isRemovable()
+{
+	if( !(getViewModelItem()->isItemRemovable()) )
+	{
+			return FALSE;
+		}
+
+		for (items_t::iterator iter = mItems.begin();
+			iter != mItems.end();)
+		{
+			items_t::iterator iit = iter++;
+			if(!(*iit)->isRemovable())
+			{
+				return FALSE;
+			}
+		}
+
+		for (folders_t::iterator iter = mFolders.begin();
+			iter != mFolders.end();)
+		{
+			folders_t::iterator fit = iter++;
+			if(!(*fit)->isRemovable())
+			{
+				return FALSE;
+			}
+		}
+	return TRUE;
+}
+
+// this is an internal method used for adding items to folders. 
+void LLFolderViewFolder::addItem(LLFolderViewItem* item)
+{
+	if (item->getParentFolder())
+	{
+		item->getParentFolder()->extractItem(item);
+	}
+	item->setParentFolder(this);
+
+	mItems.push_back(item);
+	
+	item->setRect(LLRect(0, 0, getRect().getWidth(), 0));
+	item->setVisible(FALSE);
+	
+	addChild(item);
+
+	// When the model is already hooked into a hierarchy (i.e. has a parent), do not reparent it
+	// Note: this happens when models are created before views or shared between views
+	if (!item->getViewModelItem()->hasParent())
+	{
+		getViewModelItem()->addChild(item->getViewModelItem());
+	}
+}
+
+// this is an internal method used for adding items to folders. 
+void LLFolderViewFolder::addFolder(LLFolderViewFolder* folder)
+{
+	if (folder->mParentFolder)
+	{
+		folder->mParentFolder->extractItem(folder);
+	}
+	folder->mParentFolder = this;
+	mFolders.push_back(folder);
+	folder->setOrigin(0, 0);
+	folder->reshape(getRect().getWidth(), 0);
+	folder->setVisible(FALSE);
+	// rearrange all descendants too, as our indentation level might have changed
+	//folder->requestArrange();
+	//requestSort();
+
+	addChild(folder);
+
+	// When the model is already hooked into a hierarchy (i.e. has a parent), do not reparent it
+	// Note: this happens when models are created before views or shared between views
+	if (!folder->getViewModelItem()->hasParent())
+	{
+		getViewModelItem()->addChild(folder->getViewModelItem());
+	}
+}
+
+void LLFolderViewFolder::requestArrange()
+{ 
+	if ( mLastArrangeGeneration != -1)
+	{
+		mLastArrangeGeneration = -1; 
+		// flag all items up to root
+		if (mParentFolder)
+		{
+			mParentFolder->requestArrange();
+		}
+	}
+}
+
+void LLFolderViewFolder::toggleOpen()
+{
+	setOpen(!isOpen());
+}
+
+// Force a folder open or closed
+void LLFolderViewFolder::setOpen(BOOL openitem)
+{
+	setOpenArrangeRecursively(openitem);
+}
+
+void LLFolderViewFolder::setOpenArrangeRecursively(BOOL openitem, ERecurseType recurse)
+{
+	BOOL was_open = isOpen();
+	mIsOpen = openitem;
+		if(!was_open && openitem)
+		{
+		getViewModelItem()->openItem();
+		}
+		else if(was_open && !openitem)
+		{
+		getViewModelItem()->closeItem();
+	}
+
+	if (recurse == RECURSE_DOWN || recurse == RECURSE_UP_DOWN)
+	{
+		for (folders_t::iterator iter = mFolders.begin();
+			iter != mFolders.end();)
+		{
+			folders_t::iterator fit = iter++;
+			(*fit)->setOpenArrangeRecursively(openitem, RECURSE_DOWN);		/* Flawfinder: ignore */
+		}
+	}
+	if (mParentFolder
+		&&	(recurse == RECURSE_UP
+			|| recurse == RECURSE_UP_DOWN))
+	{
+		mParentFolder->setOpenArrangeRecursively(openitem, RECURSE_UP);
+	}
+
+	if (was_open != isOpen())
+	{
+		requestArrange();
+	}
+}
+
+BOOL LLFolderViewFolder::handleDragAndDropFromChild(MASK mask,
+													BOOL drop,
+													EDragAndDropType c_type,
+													void* cargo_data,
+													EAcceptance* accept,
+													std::string& tooltip_msg)
+{
+	BOOL accepted = mViewModelItem->dragOrDrop(mask,drop,c_type,cargo_data, tooltip_msg);
+	if (accepted) 
+	{
+		mDragAndDropTarget = TRUE;
+		*accept = ACCEPT_YES_MULTI;
+	}
+	else 
+	{
+		*accept = ACCEPT_NO;
+	}
+
+	// drag and drop to child item, so clear pending auto-opens
+	getRoot()->autoOpenTest(NULL);
+
+	return TRUE;
+}
+
+void LLFolderViewFolder::openItem( void )
+{
+	toggleOpen();
+}
+
+void LLFolderViewFolder::applyFunctorToChildren(LLFolderViewFunctor& functor)
+{
+	for (folders_t::iterator iter = mFolders.begin();
+		iter != mFolders.end();)
+	{
+		folders_t::iterator fit = iter++;
+		functor.doItem((*fit));
+	}
+	for (items_t::iterator iter = mItems.begin();
+		iter != mItems.end();)
+	{
+		items_t::iterator iit = iter++;
+		functor.doItem((*iit));
+	}
+}
+
+void LLFolderViewFolder::applyFunctorRecursively(LLFolderViewFunctor& functor)
+{
+	functor.doFolder(this);
+
+	for (folders_t::iterator iter = mFolders.begin();
+		iter != mFolders.end();)
+	{
+		folders_t::iterator fit = iter++;
+		(*fit)->applyFunctorRecursively(functor);
+	}
+	for (items_t::iterator iter = mItems.begin();
+		iter != mItems.end();)
+	{
+		items_t::iterator iit = iter++;
+		functor.doItem((*iit));
+	}
+}
+
+// LLView functionality
+BOOL LLFolderViewFolder::handleDragAndDrop(S32 x, S32 y, MASK mask,
+										   BOOL drop,
+										   EDragAndDropType cargo_type,
+										   void* cargo_data,
+										   EAcceptance* accept,
+										   std::string& tooltip_msg)
+{
+	BOOL handled = FALSE;
+
+	if (isOpen())
+	{
+		handled = (childrenHandleDragAndDrop(x, y, mask, drop, cargo_type, cargo_data, accept, tooltip_msg) != NULL);
+	}
+
+	if (!handled)
+	{
+		handleDragAndDropToThisFolder(mask, drop, cargo_type, cargo_data, accept, tooltip_msg);
+
+		lldebugst(LLERR_USER_INPUT) << "dragAndDrop handled by LLFolderViewFolder" << llendl;
+	}
+
+	return TRUE;
+}
+
+BOOL LLFolderViewFolder::handleDragAndDropToThisFolder(MASK mask,
+													   BOOL drop,
+													   EDragAndDropType cargo_type,
+													   void* cargo_data,
+													   EAcceptance* accept,
+													   std::string& tooltip_msg)
+{
+	BOOL accepted = getViewModelItem()->dragOrDrop(mask,drop,cargo_type,cargo_data, tooltip_msg);
+	
+	if (accepted) 
+	{
+		mDragAndDropTarget = TRUE;
+		*accept = ACCEPT_YES_MULTI;
+	}
+	else 
+	{
+		*accept = ACCEPT_NO;
+	}
+	
+	if (!drop && accepted)
+	{
+		getRoot()->autoOpenTest(this);
+	}
+	
+	return TRUE;
+}
+
+
+BOOL LLFolderViewFolder::handleRightMouseDown( S32 x, S32 y, MASK mask )
+{
+	BOOL handled = FALSE;
+
+	if( isOpen() )
+	{
+		handled = childrenHandleRightMouseDown( x, y, mask ) != NULL;
+	}
+	if (!handled)
+	{
+		handled = LLFolderViewItem::handleRightMouseDown( x, y, mask );
+	}
+	return handled;
+}
+
+
+BOOL LLFolderViewFolder::handleHover(S32 x, S32 y, MASK mask)
+{
+	mIsMouseOverTitle = (y > (getRect().getHeight() - mItemHeight));
+
+	BOOL handled = LLView::handleHover(x, y, mask);
+
+	if (!handled)
+	{
+		// this doesn't do child processing
+		handled = LLFolderViewItem::handleHover(x, y, mask);
+	}
+
+	return handled;
+}
+
+BOOL LLFolderViewFolder::handleMouseDown( S32 x, S32 y, MASK mask )
+{
+	BOOL handled = FALSE;
+	if( isOpen() )
+	{
+		handled = childrenHandleMouseDown(x,y,mask) != NULL;
+	}
+	if( !handled )
+	{
+		if(mIndentation < x && x < mIndentation + (isCollapsed() ? 0 : mArrowSize) + mTextPad)
+		{
+			toggleOpen();
+			handled = TRUE;
+		}
+		else
+		{
+			// do normal selection logic
+			handled = LLFolderViewItem::handleMouseDown(x, y, mask);
+		}
+	}
+
+	return handled;
+}
+
+BOOL LLFolderViewFolder::handleDoubleClick( S32 x, S32 y, MASK mask )
+{
+	BOOL handled = FALSE;
+	if( isOpen() )
+	{
+		handled = childrenHandleDoubleClick( x, y, mask ) != NULL;
+	}
+	if( !handled )
+	{
+		if(mIndentation < x && x < mIndentation + (isCollapsed() ? 0 : mArrowSize) + mTextPad)
+		{
+			// don't select when user double-clicks plus sign
+			// so as not to contradict single-click behavior
+			toggleOpen();
+		}
+		else
+		{
+			getRoot()->setSelection(this, FALSE);
+			toggleOpen();
+		}
+		handled = TRUE;
+	}
+	return handled;
+}
+
+void LLFolderViewFolder::draw()
+{
+	updateLabelRotation();
+
+	LLFolderViewItem::draw();
+
+	// draw children if root folder, or any other folder that is open or animating to closed state
+	if( getRoot() == this || (isOpen() || mCurHeight != mTargetHeight ))
+	{
+		LLView::draw();
+	}
+
+	mExpanderHighlighted = FALSE;
+}
+
+// this does prefix traversal, as folders are listed above their contents
+LLFolderViewItem* LLFolderViewFolder::getNextFromChild( LLFolderViewItem* item, BOOL include_children )
+{
+	BOOL found_item = FALSE;
+
+	LLFolderViewItem* result = NULL;
+	// when not starting from a given item, start at beginning
+	if(item == NULL)
+	{
+		found_item = TRUE;
+	}
+
+	// find current item among children
+	folders_t::iterator fit = mFolders.begin();
+	folders_t::iterator fend = mFolders.end();
+
+	items_t::iterator iit = mItems.begin();
+	items_t::iterator iend = mItems.end();
+
+	// if not trivially starting at the beginning, we have to find the current item
+	if (!found_item)
+	{
+		// first, look among folders, since they are always above items
+		for(; fit != fend; ++fit)
+		{
+			if(item == (*fit))
+			{
+				found_item = TRUE;
+				// if we are on downwards traversal
+				if (include_children && (*fit)->isOpen())
+				{
+					// look for first descendant
+					return (*fit)->getNextFromChild(NULL, TRUE);
+				}
+				// otherwise advance to next folder
+				++fit;
+				include_children = TRUE;
+				break;
+			}
+		}
+
+		// didn't find in folders?  Check items...
+		if (!found_item)
+		{
+			for(; iit != iend; ++iit)
+			{
+				if(item == (*iit))
+				{
+					found_item = TRUE;
+					// point to next item
+					++iit;
+					break;
+				}
+			}
+		}
+	}
+
+	if (!found_item)
+	{
+		// you should never call this method with an item that isn't a child
+		// so we should always find something
+		llassert(FALSE);
+		return NULL;
+	}
+
+	// at this point, either iit or fit point to a candidate "next" item
+	// if both are out of range, we need to punt up to our parent
+
+	// now, starting from found folder, continue through folders
+	// searching for next visible folder
+	while(fit != fend && !(*fit)->getVisible())
+	{
+		// turn on downwards traversal for next folder
+		++fit;
+	} 
+
+	if (fit != fend)
+	{
+		result = (*fit);
+	}
+	else
+	{
+		// otherwise, scan for next visible item
+		while(iit != iend && !(*iit)->getVisible())
+		{
+			++iit;
+		} 
+
+		// check to see if we have a valid item
+		if (iit != iend)
+		{
+			result = (*iit);
+		}
+	}
+
+	if( !result && mParentFolder )
+	{
+		// If there are no siblings or children to go to, recurse up one level in the tree
+		// and skip children for this folder, as we've already discounted them
+		result = mParentFolder->getNextFromChild(this, FALSE);
+	}
+
+	return result;
+}
+
+// this does postfix traversal, as folders are listed above their contents
+LLFolderViewItem* LLFolderViewFolder::getPreviousFromChild( LLFolderViewItem* item, BOOL include_children )
+{
+	BOOL found_item = FALSE;
+
+	LLFolderViewItem* result = NULL;
+	// when not starting from a given item, start at end
+	if(item == NULL)
+	{
+		found_item = TRUE;
+	}
+
+	// find current item among children
+	folders_t::reverse_iterator fit = mFolders.rbegin();
+	folders_t::reverse_iterator fend = mFolders.rend();
+
+	items_t::reverse_iterator iit = mItems.rbegin();
+	items_t::reverse_iterator iend = mItems.rend();
+
+	// if not trivially starting at the end, we have to find the current item
+	if (!found_item)
+	{
+		// first, look among items, since they are always below the folders
+		for(; iit != iend; ++iit)
+		{
+			if(item == (*iit))
+			{
+				found_item = TRUE;
+				// point to next item
+				++iit;
+				break;
+			}
+		}
+
+		// didn't find in items?  Check folders...
+		if (!found_item)
+		{
+			for(; fit != fend; ++fit)
+			{
+				if(item == (*fit))
+				{
+					found_item = TRUE;
+					// point to next folder
+					++fit;
+					break;
+				}
+			}
+		}
+	}
+
+	if (!found_item)
+	{
+		// you should never call this method with an item that isn't a child
+		// so we should always find something
+		llassert(FALSE);
+		return NULL;
+	}
+
+	// at this point, either iit or fit point to a candidate "next" item
+	// if both are out of range, we need to punt up to our parent
+
+	// now, starting from found item, continue through items
+	// searching for next visible item
+	while(iit != iend && !(*iit)->getVisible())
+	{
+		++iit;
+	} 
+
+	if (iit != iend)
+	{
+		// we found an appropriate item
+		result = (*iit);
+	}
+	else
+	{
+		// otherwise, scan for next visible folder
+		while(fit != fend && !(*fit)->getVisible())
+		{
+			++fit;
+		} 
+
+		// check to see if we have a valid folder
+		if (fit != fend)
+		{
+			// try selecting child element of this folder
+			if ((*fit)->isOpen() && include_children)
+			{
+				result = (*fit)->getPreviousFromChild(NULL);
+			}
+			else
+			{
+				result = (*fit);
+			}
+		}
+	}
+
+	if( !result )
+	{
+		// If there are no siblings or children to go to, recurse up one level in the tree
+		// which gets back to this folder, which will only be visited if it is a valid, visible item
+		result = this;
+	}
+
+	return result;
+}
+