/indra/llui/llfloater.cpp

Large files files are truncated, but you can click here to view the full file

/** 

 * @file llfloater.cpp
 * @brief LLFloater base class
 *
 * $LicenseInfo:firstyear=2002&license=viewerlgpl$
 * 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
 * $/LicenseInfo$
 */

// Floating "windows" within the GL display, like the inventory floater,
// mini-map floater, etc.

#include "linden_common.h"

#include "llfloater.h"

#include "llfocusmgr.h"

#include "lluictrlfactory.h"
#include "llbutton.h"
#include "llcheckboxctrl.h"
#include "lldir.h"
#include "lldraghandle.h"
#include "llfloaterreg.h"
#include "llfocusmgr.h"
#include "llresizebar.h"
#include "llresizehandle.h"
#include "llkeyboard.h"
#include "llmenugl.h"	// MENU_BAR_HEIGHT
#include "llmodaldialog.h"
#include "lltextbox.h"
#include "llresmgr.h"
#include "llui.h"
#include "llwindow.h"
#include "llstl.h"
#include "llcontrol.h"
#include "lltabcontainer.h"
#include "v2math.h"
#include "lltrans.h"
#include "llhelp.h"
#include "llmultifloater.h"
#include "llsdutil.h"
#include <boost/foreach.hpp>


// use this to control "jumping" behavior when Ctrl-Tabbing
const S32 TABBED_FLOATER_OFFSET = 0;

namespace LLInitParam
{
	void TypeValues<LLFloaterEnums::EOpenPositioning>::declareValues()
	{
		declare("none",       LLFloaterEnums::OPEN_POSITIONING_NONE);
		declare("cascading",  LLFloaterEnums::OPEN_POSITIONING_CASCADING);
		declare("centered",   LLFloaterEnums::OPEN_POSITIONING_CENTERED);
		declare("specified",  LLFloaterEnums::OPEN_POSITIONING_SPECIFIED);
	}
}

std::string	LLFloater::sButtonNames[BUTTON_COUNT] = 
{
	"llfloater_close_btn",		//BUTTON_CLOSE
	"llfloater_restore_btn",	//BUTTON_RESTORE
	"llfloater_minimize_btn",	//BUTTON_MINIMIZE
	"llfloater_tear_off_btn",	//BUTTON_TEAR_OFF
	"llfloater_dock_btn",		//BUTTON_DOCK
	"llfloater_help_btn"		//BUTTON_HELP
};

std::string LLFloater::sButtonToolTips[BUTTON_COUNT];

std::string LLFloater::sButtonToolTipsIndex[BUTTON_COUNT]=
{
#ifdef LL_DARWIN
	"BUTTON_CLOSE_DARWIN",	//"Close (Cmd-W)",	//BUTTON_CLOSE
#else
	"BUTTON_CLOSE_WIN",		//"Close (Ctrl-W)",	//BUTTON_CLOSE
#endif
	"BUTTON_RESTORE",		//"Restore",	//BUTTON_RESTORE
	"BUTTON_MINIMIZE",		//"Minimize",	//BUTTON_MINIMIZE
	"BUTTON_TEAR_OFF",		//"Tear Off",	//BUTTON_TEAR_OFF
	"BUTTON_DOCK",
	"BUTTON_HELP"
};

LLFloater::click_callback LLFloater::sButtonCallbacks[BUTTON_COUNT] =
{
	LLFloater::onClickClose,	//BUTTON_CLOSE
	LLFloater::onClickMinimize, //BUTTON_RESTORE
	LLFloater::onClickMinimize, //BUTTON_MINIMIZE
	LLFloater::onClickTearOff,	//BUTTON_TEAR_OFF
	LLFloater::onClickDock,		//BUTTON_DOCK
	LLFloater::onClickHelp		//BUTTON_HELP
};

LLMultiFloater* LLFloater::sHostp = NULL;
BOOL			LLFloater::sQuitting = FALSE; // Flag to prevent storing visibility controls while quitting

LLFloaterView* gFloaterView = NULL;

/*==========================================================================*|
// DEV-38598: The fundamental problem with this operation is that it can only
// support a subset of LLSD values. While it's plausible to compare two arrays
// lexicographically, what strict ordering can you impose on maps?
// (LLFloaterTOS's current key is an LLSD map.)

// Of course something like this is necessary if you want to build a std::set
// or std::map with LLSD keys. Fortunately we're getting by with other
// container types for now.

//static
bool LLFloater::KeyCompare::compare(const LLSD& a, const LLSD& b)
{
	if (a.type() != b.type())
	{
		//llerrs << "Mismatched LLSD types: (" << a << ") mismatches (" << b << ")" << llendl;
		return false;
	}
	else if (a.isUndefined())
		return false;
	else if (a.isInteger())
		return a.asInteger() < b.asInteger();
	else if (a.isReal())
		return a.asReal() < b.asReal();
	else if (a.isString())
		return a.asString() < b.asString();
	else if (a.isUUID())
		return a.asUUID() < b.asUUID();
	else if (a.isDate())
		return a.asDate() < b.asDate();
	else if (a.isURI())
		return a.asString() < b.asString(); // compare URIs as strings
	else if (a.isBoolean())
		return a.asBoolean() < b.asBoolean();
	else
		return false; // no valid operation for Binary
}
|*==========================================================================*/

bool LLFloater::KeyCompare::equate(const LLSD& a, const LLSD& b)
{
	return llsd_equals(a, b);
}

//************************************

LLFloater::Params::Params()
:	title("title"),
	short_title("short_title"),
	single_instance("single_instance", false),
	reuse_instance("reuse_instance", false),
	can_resize("can_resize", false),
	can_minimize("can_minimize", true),
	can_close("can_close", true),
	can_drag_on_left("can_drag_on_left", false),
	can_tear_off("can_tear_off", true),
	save_dock_state("save_dock_state", false),
	save_rect("save_rect", false),
	save_visibility("save_visibility", false),
	can_dock("can_dock", false),
	show_title("show_title", true),
	open_positioning("open_positioning", LLFloaterEnums::OPEN_POSITIONING_NONE),
	specified_left("specified_left"),
	specified_bottom("specified_bottom"),
	header_height("header_height", 0),
	legacy_header_height("legacy_header_height", 0),
	close_image("close_image"),
	restore_image("restore_image"),
	minimize_image("minimize_image"),
	tear_off_image("tear_off_image"),
	dock_image("dock_image"),
	help_image("help_image"),
	close_pressed_image("close_pressed_image"),
	restore_pressed_image("restore_pressed_image"),
	minimize_pressed_image("minimize_pressed_image"),
	tear_off_pressed_image("tear_off_pressed_image"),
	dock_pressed_image("dock_pressed_image"),
	help_pressed_image("help_pressed_image"),
	open_callback("open_callback"),
	close_callback("close_callback"),
	follows("follows")
{
	changeDefault(visible, false);
}


//static 
const LLFloater::Params& LLFloater::getDefaultParams()
{
	return LLUICtrlFactory::getDefaultParams<LLFloater>();
}

//static
void LLFloater::initClass()
{
	// translate tooltips for floater buttons
	for (S32 i = 0; i < BUTTON_COUNT; i++)
	{
		sButtonToolTips[i] = LLTrans::getString( sButtonToolTipsIndex[i] );
	}

	LLControlVariable* ctrl = LLUI::sSettingGroups["config"]->getControl("ActiveFloaterTransparency").get();
	if (ctrl)
	{
		ctrl->getSignal()->connect(boost::bind(&LLFloater::updateActiveFloaterTransparency));
		updateActiveFloaterTransparency();
	}

	ctrl = LLUI::sSettingGroups["config"]->getControl("InactiveFloaterTransparency").get();
	if (ctrl)
	{
		ctrl->getSignal()->connect(boost::bind(&LLFloater::updateInactiveFloaterTransparency));
		updateInactiveFloaterTransparency();
	}

}

// defaults for floater param block pulled from widgets/floater.xml
static LLWidgetNameRegistry::StaticRegistrar sRegisterFloaterParams(&typeid(LLFloater::Params), "floater");

LLFloater::LLFloater(const LLSD& key, const LLFloater::Params& p)
:	LLPanel(),	// intentionally do not pass params here, see initFromParams
 	mDragHandle(NULL),
	mTitle(p.title),
	mShortTitle(p.short_title),
	mSingleInstance(p.single_instance),
	mReuseInstance(p.reuse_instance.isProvided() ? p.reuse_instance : p.single_instance), // reuse single-instance floaters by default
	mKey(key),
	mCanTearOff(p.can_tear_off),
	mCanMinimize(p.can_minimize),
	mCanClose(p.can_close),
	mDragOnLeft(p.can_drag_on_left),
	mResizable(p.can_resize),
	mOpenPositioning(p.open_positioning),
	mSpecifiedLeft(p.specified_left),
	mSpecifiedBottom(p.specified_bottom),
	mMinWidth(p.min_width),
	mMinHeight(p.min_height),
	mHeaderHeight(p.header_height),
	mLegacyHeaderHeight(p.legacy_header_height),
	mMinimized(FALSE),
	mForeground(FALSE),
	mFirstLook(TRUE),
	mButtonScale(1.0f),
	mAutoFocus(TRUE), // automatically take focus when opened
	mCanDock(false),
	mDocked(false),
	mTornOff(false),
	mHasBeenDraggedWhileMinimized(FALSE),
	mPreviousMinimizedBottom(0),
	mPreviousMinimizedLeft(0),
	mMinimizeSignal(NULL)
//	mNotificationContext(NULL)
{
//	mNotificationContext = new LLFloaterNotificationContext(getHandle());

	// Clicks stop here.
	setMouseOpaque(TRUE);
	
	// Floaters always draw their background, unlike every other panel.
	setBackgroundVisible(TRUE);

	// Floaters start not minimized.  When minimized, they save their
	// prior rectangle to be used on restore.
	mExpandedRect.set(0,0,0,0);
	
	memset(mButtonsEnabled, 0, BUTTON_COUNT * sizeof(bool));
	memset(mButtons, 0, BUTTON_COUNT * sizeof(LLButton*));
	
	addDragHandle();
	addResizeCtrls();
	
	initFromParams(p);
	
	initFloater(p);
}

// Note: Floaters constructed from XML call init() twice!
void LLFloater::initFloater(const Params& p)
{
	// Close button.
	if (mCanClose)
	{
		mButtonsEnabled[BUTTON_CLOSE] = TRUE;
	}

	// Help button: '?'
	if ( !mHelpTopic.empty() )
	{
		mButtonsEnabled[BUTTON_HELP] = TRUE;
	}

	// Minimize button only for top draggers
	if ( !mDragOnLeft && mCanMinimize )
	{
		mButtonsEnabled[BUTTON_MINIMIZE] = TRUE;
	}

	if(mCanDock)
	{
		mButtonsEnabled[BUTTON_DOCK] = TRUE;
	}

	buildButtons(p);

	// Floaters are created in the invisible state	
	setVisible(FALSE);

	if (!getParent())
	{
		gFloaterView->addChild(this);
	}
}

void LLFloater::addDragHandle()
{
	if (!mDragHandle)
	{
		if (mDragOnLeft)
		{
			LLDragHandleLeft::Params p;
			p.name("drag");
			p.follows.flags(FOLLOWS_ALL);
			p.label(mTitle);
			mDragHandle = LLUICtrlFactory::create<LLDragHandleLeft>(p);
		}
		else // drag on top
		{
			LLDragHandleTop::Params p;
			p.name("Drag Handle");
			p.follows.flags(FOLLOWS_ALL);
			p.label(mTitle);
			mDragHandle = LLUICtrlFactory::create<LLDragHandleTop>(p);
		}
		addChild(mDragHandle);
	}
	layoutDragHandle();
	applyTitle();
}

void LLFloater::layoutDragHandle()
{
	static LLUICachedControl<S32> floater_close_box_size ("UIFloaterCloseBoxSize", 0);
	S32 close_box_size = mCanClose ? floater_close_box_size : 0;
	
	LLRect rect;
	if (mDragOnLeft)
	{
		rect.setLeftTopAndSize(0, 0, DRAG_HANDLE_WIDTH, getRect().getHeight() - LLPANEL_BORDER_WIDTH - close_box_size);
	}
	else // drag on top
	{
		rect = getLocalRect();
	}
	mDragHandle->setShape(rect);
	updateTitleButtons();
}

// static
void LLFloater::updateActiveFloaterTransparency()
{
	sActiveControlTransparency = LLUI::sSettingGroups["config"]->getF32("ActiveFloaterTransparency");
}

// static
void LLFloater::updateInactiveFloaterTransparency()
{
	sInactiveControlTransparency = LLUI::sSettingGroups["config"]->getF32("InactiveFloaterTransparency");
}

void LLFloater::addResizeCtrls()
{	
	// Resize bars (sides)
	LLResizeBar::Params p;
	p.name("resizebar_left");
	p.resizing_view(this);
	p.min_size(mMinWidth);
	p.side(LLResizeBar::LEFT);
	mResizeBar[LLResizeBar::LEFT] = LLUICtrlFactory::create<LLResizeBar>(p);
	addChild( mResizeBar[LLResizeBar::LEFT] );

	p.name("resizebar_top");
	p.min_size(mMinHeight);
	p.side(LLResizeBar::TOP);

	mResizeBar[LLResizeBar::TOP] = LLUICtrlFactory::create<LLResizeBar>(p);
	addChild( mResizeBar[LLResizeBar::TOP] );

	p.name("resizebar_right");
	p.min_size(mMinWidth);
	p.side(LLResizeBar::RIGHT);	
	mResizeBar[LLResizeBar::RIGHT] = LLUICtrlFactory::create<LLResizeBar>(p);
	addChild( mResizeBar[LLResizeBar::RIGHT] );

	p.name("resizebar_bottom");
	p.min_size(mMinHeight);
	p.side(LLResizeBar::BOTTOM);
	mResizeBar[LLResizeBar::BOTTOM] = LLUICtrlFactory::create<LLResizeBar>(p);
	addChild( mResizeBar[LLResizeBar::BOTTOM] );

	// Resize handles (corners)
	LLResizeHandle::Params handle_p;
	// handles must not be mouse-opaque, otherwise they block hover events
	// to other buttons like the close box. JC
	handle_p.mouse_opaque(false);
	handle_p.min_width(mMinWidth);
	handle_p.min_height(mMinHeight);
	handle_p.corner(LLResizeHandle::RIGHT_BOTTOM);
	mResizeHandle[0] = LLUICtrlFactory::create<LLResizeHandle>(handle_p);
	addChild(mResizeHandle[0]);

	handle_p.corner(LLResizeHandle::RIGHT_TOP);
	mResizeHandle[1] = LLUICtrlFactory::create<LLResizeHandle>(handle_p);
	addChild(mResizeHandle[1]);
	
	handle_p.corner(LLResizeHandle::LEFT_BOTTOM);
	mResizeHandle[2] = LLUICtrlFactory::create<LLResizeHandle>(handle_p);
	addChild(mResizeHandle[2]);

	handle_p.corner(LLResizeHandle::LEFT_TOP);
	mResizeHandle[3] = LLUICtrlFactory::create<LLResizeHandle>(handle_p);
	addChild(mResizeHandle[3]);

	layoutResizeCtrls();
}

void LLFloater::layoutResizeCtrls()
{
	LLRect rect;

	// Resize bars (sides)
	const S32 RESIZE_BAR_THICKNESS = 3;
	rect = LLRect( 0, getRect().getHeight(), RESIZE_BAR_THICKNESS, 0);
	mResizeBar[LLResizeBar::LEFT]->setRect(rect);

	rect = LLRect( 0, getRect().getHeight(), getRect().getWidth(), getRect().getHeight() - RESIZE_BAR_THICKNESS);
	mResizeBar[LLResizeBar::TOP]->setRect(rect);

	rect = LLRect(getRect().getWidth() - RESIZE_BAR_THICKNESS, getRect().getHeight(), getRect().getWidth(), 0);
	mResizeBar[LLResizeBar::RIGHT]->setRect(rect);

	rect = LLRect(0, RESIZE_BAR_THICKNESS, getRect().getWidth(), 0);
	mResizeBar[LLResizeBar::BOTTOM]->setRect(rect);

	// Resize handles (corners)
	rect = LLRect( getRect().getWidth() - RESIZE_HANDLE_WIDTH, RESIZE_HANDLE_HEIGHT, getRect().getWidth(), 0);
	mResizeHandle[0]->setRect(rect);

	rect = LLRect( getRect().getWidth() - RESIZE_HANDLE_WIDTH, getRect().getHeight(), getRect().getWidth(), getRect().getHeight() - RESIZE_HANDLE_HEIGHT);
	mResizeHandle[1]->setRect(rect);
	
	rect = LLRect( 0, RESIZE_HANDLE_HEIGHT, RESIZE_HANDLE_WIDTH, 0 );
	mResizeHandle[2]->setRect(rect);

	rect = LLRect( 0, getRect().getHeight(), RESIZE_HANDLE_WIDTH, getRect().getHeight() - RESIZE_HANDLE_HEIGHT );
	mResizeHandle[3]->setRect(rect);
}

void LLFloater::enableResizeCtrls(bool enable, bool width, bool height)
{
	mResizeBar[LLResizeBar::LEFT]->setVisible(enable && width);
	mResizeBar[LLResizeBar::LEFT]->setEnabled(enable && width);

	mResizeBar[LLResizeBar::TOP]->setVisible(enable && height);
	mResizeBar[LLResizeBar::TOP]->setEnabled(enable && height);
	
	mResizeBar[LLResizeBar::RIGHT]->setVisible(enable && width);
	mResizeBar[LLResizeBar::RIGHT]->setEnabled(enable && width);
	
	mResizeBar[LLResizeBar::BOTTOM]->setVisible(enable && height);
	mResizeBar[LLResizeBar::BOTTOM]->setEnabled(enable && height);

	for (S32 i = 0; i < 4; ++i)
	{
		mResizeHandle[i]->setVisible(enable && width && height);
		mResizeHandle[i]->setEnabled(enable && width && height);
	}
}

void LLFloater::destroy()
{
	// LLFloaterReg should be synchronized with "dead" floater to avoid returning dead instance before
	// it was deleted via LLMortician::updateClass(). See EXT-8458.
	LLFloaterReg::removeInstance(mInstanceName, mKey);
	die();
}

// virtual
LLFloater::~LLFloater()
{
	LLFloaterReg::removeInstance(mInstanceName, mKey);
	
//	delete mNotificationContext;
//	mNotificationContext = NULL;

	//// am I not hosted by another floater?
	//if (mHostHandle.isDead())
	//{
	//	LLFloaterView* parent = (LLFloaterView*) getParent();

	//	if( parent )
	//	{
	//		parent->removeChild( this );
	//	}
	//}

	// Just in case we might still have focus here, release it.
	releaseFocus();

	// This is important so that floaters with persistent rects (i.e., those
	// created with rect control rather than an LLRect) are restored in their
	// correct, non-minimized positions.
	setMinimized( FALSE );

	delete mDragHandle;
	for (S32 i = 0; i < 4; i++) 
	{
		delete mResizeBar[i];
		delete mResizeHandle[i];
	}

	setVisible(false); // We're not visible if we're destroyed
	storeVisibilityControl();
	storeDockStateControl();

	delete mMinimizeSignal;
}

void LLFloater::storeRectControl()
{
	if( mRectControl.size() > 1 )
	{
		getControlGroup()->setRect( mRectControl, getRect() );
	}
}

void LLFloater::storeVisibilityControl()
{
	if( !sQuitting && mVisibilityControl.size() > 1 )
	{
		getControlGroup()->setBOOL( mVisibilityControl, getVisible() );
	}
}

void LLFloater::storeDockStateControl()
{
	if( !sQuitting && mDocStateControl.size() > 1 )
	{
		getControlGroup()->setBOOL( mDocStateControl, isDocked() );
	}
}

LLRect LLFloater::getSavedRect() const
{
	LLRect rect;

	if (mRectControl.size() > 1)
	{
		rect = getControlGroup()->getRect(mRectControl);
	}

	return rect;
}

bool LLFloater::hasSavedRect() const
{
	return !getSavedRect().isEmpty();
}

// static
std::string LLFloater::getControlName(const std::string& name, const LLSD& key)
{
	std::string ctrl_name = name;

	// Add the key to the control name if appropriate.
	if (key.isString() && !key.asString().empty())
	{
		ctrl_name += "_" + key.asString();
	}

	return ctrl_name;
}

// static
LLControlGroup*	LLFloater::getControlGroup()
{
	// Floater size, position, visibility, etc are saved in per-account settings.
	return LLUI::sSettingGroups["account"];
}

void LLFloater::setVisible( BOOL visible )
{
	LLPanel::setVisible(visible); // calls handleVisibilityChange()
	if( visible && mFirstLook )
	{
		mFirstLook = FALSE;
	}

	if( !visible )
	{
		LLUI::removePopup(this);

		if( gFocusMgr.childHasMouseCapture( this ) )
		{
			gFocusMgr.setMouseCapture(NULL);
		}
	}

	for(handle_set_iter_t dependent_it = mDependents.begin();
		dependent_it != mDependents.end(); )
	{
		LLFloater* floaterp = dependent_it->get();

		if (floaterp)
		{
			floaterp->setVisible(visible);
		}
		++dependent_it;
	}

	storeVisibilityControl();
}

// virtual
void LLFloater::handleVisibilityChange ( BOOL new_visibility )
{
	if (new_visibility)
	{
		if (getHost())
			getHost()->setFloaterFlashing(this, FALSE);
	}
	LLPanel::handleVisibilityChange ( new_visibility );
}

void LLFloater::openFloater(const LLSD& key)
{
	llinfos << "Opening floater " << getName() << llendl;
	mKey = key; // in case we need to open ourselves again
	
	if (getSoundFlags() != SILENT 
	// don't play open sound for hosted (tabbed) windows
		&& !getHost() 
		&& !getFloaterHost()
		&& (!getVisible() || isMinimized()))
	{
		make_ui_sound("UISndWindowOpen");
	}

	//RN: for now, we don't allow rehosting from one multifloater to another
	// just need to fix the bugs
	if (getFloaterHost() != NULL && getHost() == NULL)
	{
		// needs a host
		// only select tabs if window they are hosted in is visible
		getFloaterHost()->addFloater(this, getFloaterHost()->getVisible());
	}

	if (getHost() != NULL)
	{
		getHost()->setMinimized(FALSE);
		getHost()->setVisibleAndFrontmost(mAutoFocus);
		getHost()->showFloater(this);
	}
	else
	{
		LLFloater* floater_to_stack = LLFloaterReg::getLastFloaterInGroup(mInstanceName);
		if (!floater_to_stack)
		{
			floater_to_stack = LLFloaterReg::getLastFloaterCascading();
		}
		applyControlsAndPosition(floater_to_stack);
		setMinimized(FALSE);
		setVisibleAndFrontmost(mAutoFocus);
	}

	mOpenSignal(this, key);
	onOpen(key);

	dirtyRect();
}

void LLFloater::closeFloater(bool app_quitting)
{
	llinfos << "Closing floater " << getName() << llendl;
	if (app_quitting)
	{
		LLFloater::sQuitting = true;
	}
	
	// Always unminimize before trying to close.
	// Most of the time the user will never see this state.
	setMinimized(FALSE);

	if (canClose())
	{
		if (getHost())
		{
			((LLMultiFloater*)getHost())->removeFloater(this);
			gFloaterView->addChild(this);
		}

		if (getSoundFlags() != SILENT
			&& getVisible()
			&& !getHost()
			&& !app_quitting)
		{
			make_ui_sound("UISndWindowClose");
		}

		// now close dependent floater
		for(handle_set_iter_t dependent_it = mDependents.begin();
			dependent_it != mDependents.end(); )
		{
			
			LLFloater* floaterp = dependent_it->get();
			if (floaterp)
			{
				++dependent_it;
				floaterp->closeFloater(app_quitting);
			}
			else
			{
				mDependents.erase(dependent_it++);
			}
		}
		
		cleanupHandles();
		gFocusMgr.clearLastFocusForGroup(this);

		if (hasFocus())
		{
			// Do this early, so UI controls will commit before the
			// window is taken down.
			releaseFocus();

			// give focus to dependee floater if it exists, and we had focus first
			if (isDependent())
			{
				LLFloater* dependee = mDependeeHandle.get();
				if (dependee && !dependee->isDead())
				{
					dependee->setFocus(TRUE);
				}
			}
		}

		dirtyRect();

		// Close callbacks
		onClose(app_quitting);
		mCloseSignal(this, LLSD(app_quitting));
		
		// Hide or Destroy
		if (mSingleInstance)
		{
			// Hide the instance
			if (getHost())
			{
				getHost()->setVisible(FALSE);
			}
			else
			{
				setVisible(FALSE);
				if (!mReuseInstance)
				{
					destroy();
				}
			}
		}
		else
		{
			setVisible(FALSE); // hide before destroying (so handleVisibilityChange() gets called)
			if (!mReuseInstance)
			{
				destroy();
			}
		}
	}
}

/*virtual*/
void LLFloater::reshape(S32 width, S32 height, BOOL called_from_parent)
{
	LLPanel::reshape(width, height, called_from_parent);
}

void LLFloater::releaseFocus()
{
	LLUI::removePopup(this);

	setFocus(FALSE);

	if( gFocusMgr.childHasMouseCapture( this ) )
	{
		gFocusMgr.setMouseCapture(NULL);
	}
}


void LLFloater::setResizeLimits( S32 min_width, S32 min_height )
{
	mMinWidth = min_width;
	mMinHeight = min_height;

	for( S32 i = 0; i < 4; i++ )
	{
		if( mResizeBar[i] )
		{
			if (i == LLResizeBar::LEFT || i == LLResizeBar::RIGHT)
			{
				mResizeBar[i]->setResizeLimits( min_width, S32_MAX );
			}
			else
			{
				mResizeBar[i]->setResizeLimits( min_height, S32_MAX );
			}
		}
		if( mResizeHandle[i] )
		{
			mResizeHandle[i]->setResizeLimits( min_width, min_height );
		}
	}
}


void LLFloater::center()
{
	if(getHost())
	{
		// hosted floaters can't move
		return;
	}
	centerWithin(gFloaterView->getRect());
}

LLMultiFloater* LLFloater::getHost()
{ 
	return (LLMultiFloater*)mHostHandle.get(); 
}

void LLFloater::applyControlsAndPosition(LLFloater* other)
{
	if (!applyDockState())
	{
		if (!applyRectControl())
		{
			applyPositioning(other);
		}
	}
}

bool LLFloater::applyRectControl()
{
	bool saved_rect = false;

	LLFloater* last_in_group = LLFloaterReg::getLastFloaterInGroup(mInstanceName);
	if (last_in_group && last_in_group != this)
	{
		// other floaters in our group, position ourselves relative to them and don't save the rect
		mRectControl.clear();
		mOpenPositioning = LLFloaterEnums::OPEN_POSITIONING_CASCADE_GROUP;
	}
	else if (mRectControl.size() > 1)
	{
		// If we have a saved rect, use it
		const LLRect& rect = getControlGroup()->getRect(mRectControl);
		saved_rect = rect.notEmpty();
		if (saved_rect)
		{
			setOrigin(rect.mLeft, rect.mBottom);

			if (mResizable)
			{
				reshape(llmax(mMinWidth, rect.getWidth()), llmax(mMinHeight, rect.getHeight()));
			}
		}
	}

	return saved_rect;
}

bool LLFloater::applyDockState()
{
	bool docked = false;

	if (mDocStateControl.size() > 1)
	{
		docked = getControlGroup()->getBOOL(mDocStateControl);
		setDocked(docked);
	}

	return docked;
}

void LLFloater::applyPositioning(LLFloater* other)
{
	// Otherwise position according to the positioning code
	switch (mOpenPositioning)
	{
	case LLFloaterEnums::OPEN_POSITIONING_CENTERED:
		center();
		break;

	case LLFloaterEnums::OPEN_POSITIONING_SPECIFIED:
		{
			// Translate relative to snap rect
			setOrigin(mSpecifiedLeft, mSpecifiedBottom);
			const LLRect& snap_rect = gFloaterView->getSnapRect();
			translate(snap_rect.mLeft, snap_rect.mBottom);
			translateIntoRect(snap_rect, FALSE);
		}
		break;

	case LLFloaterEnums::OPEN_POSITIONING_CASCADE_GROUP:
	case LLFloaterEnums::OPEN_POSITIONING_CASCADING:
		if (other != NULL && other != this)
		{
			stackWith(*other);
		}
		else
		{
			static const U32 CASCADING_FLOATER_HOFFSET = 0;
			static const U32 CASCADING_FLOATER_VOFFSET = 0;
			
			const LLRect& snap_rect = gFloaterView->getSnapRect();

			const S32 horizontal_offset = CASCADING_FLOATER_HOFFSET;
			const S32 vertical_offset = snap_rect.getHeight() - CASCADING_FLOATER_VOFFSET;

			S32 rect_height = getRect().getHeight();
			setOrigin(horizontal_offset, vertical_offset - rect_height);

			translate(snap_rect.mLeft, snap_rect.mBottom);
			translateIntoRect(snap_rect, FALSE);
		}
		break;

	case LLFloaterEnums::OPEN_POSITIONING_NONE:
	default:
		// Do nothing
		break;
	}
}

void LLFloater::applyTitle()
{
	if (!mDragHandle)
	{
		return;
	}

	if (isMinimized() && !mShortTitle.empty())
	{
		mDragHandle->setTitle( mShortTitle );
	}
	else
	{
		mDragHandle->setTitle ( mTitle );
	}

	if (getHost())
	{
		getHost()->updateFloaterTitle(this);	
	}
}

std::string LLFloater::getCurrentTitle() const
{
	return mDragHandle ? mDragHandle->getTitle() : LLStringUtil::null;
}

void LLFloater::setTitle( const std::string& title )
{
	mTitle = title;
	applyTitle();
}

std::string LLFloater::getTitle() const
{
	if (mTitle.empty())
	{
		return mDragHandle ? mDragHandle->getTitle() : LLStringUtil::null;
	}
	else
	{
		return mTitle;
	}
}

void LLFloater::setShortTitle( const std::string& short_title )
{
	mShortTitle = short_title;
	applyTitle();
}

std::string LLFloater::getShortTitle() const
{
	if (mShortTitle.empty())
	{
		return mDragHandle ? mDragHandle->getTitle() : LLStringUtil::null;
	}
	else
	{
		return mShortTitle;
	}
}

BOOL LLFloater::canSnapTo(const LLView* other_view)
{
	if (NULL == other_view)
	{
		llwarns << "other_view is NULL" << llendl;
		return FALSE;
	}

	if (other_view != getParent())
	{
		const LLFloater* other_floaterp = dynamic_cast<const LLFloater*>(other_view);		
		if (other_floaterp 
			&& other_floaterp->getSnapTarget() == getHandle() 
			&& mDependents.find(other_floaterp->getHandle()) != mDependents.end())
		{
			// this is a dependent that is already snapped to us, so don't snap back to it
			return FALSE;
		}
	}

	return LLPanel::canSnapTo(other_view);
}

void LLFloater::setSnappedTo(const LLView* snap_view)
{
	if (!snap_view || snap_view == getParent())
	{
		clearSnapTarget();
	}
	else
	{
		//RN: assume it's a floater as it must be a sibling to our parent floater
		const LLFloater* floaterp = dynamic_cast<const LLFloater*>(snap_view);
		if (floaterp)
		{
			setSnapTarget(floaterp->getHandle());
		}
	}
}

void LLFloater::handleReshape(const LLRect& new_rect, bool by_user)
{
	const LLRect old_rect = getRect();
	LLView::handleReshape(new_rect, by_user);

	if (by_user && !isMinimized())
	{
		storeRectControl();
		mOpenPositioning = LLFloaterEnums::OPEN_POSITIONING_NONE;
	}

	// if not minimized, adjust all snapped dependents to new shape
	if (!isMinimized())
	{
		// gather all snapped dependents
		for(handle_set_iter_t dependent_it = mDependents.begin();
			dependent_it != mDependents.end(); ++dependent_it)
		{
			LLFloater* floaterp = dependent_it->get();
			// is a dependent snapped to us?
			if (floaterp && floaterp->getSnapTarget() == getHandle())
			{
				S32 delta_x = 0;
				S32 delta_y = 0;
				// check to see if it snapped to right or top, and move if dependee floater is resizing
				LLRect dependent_rect = floaterp->getRect();
				if (dependent_rect.mLeft - getRect().mLeft >= old_rect.getWidth() || // dependent on my right?
					dependent_rect.mRight == getRect().mLeft + old_rect.getWidth()) // dependent aligned with my right
				{
					// was snapped directly onto right side or aligned with it
					delta_x += new_rect.getWidth() - old_rect.getWidth();
				}
				if (dependent_rect.mBottom - getRect().mBottom >= old_rect.getHeight() ||
					dependent_rect.mTop == getRect().mBottom + old_rect.getHeight())
				{
					// was snapped directly onto top side or aligned with it
					delta_y += new_rect.getHeight() - old_rect.getHeight();
				}

				// take translation of dependee floater into account as well
				delta_x += new_rect.mLeft - old_rect.mLeft;
				delta_y += new_rect.mBottom - old_rect.mBottom;

				dependent_rect.translate(delta_x, delta_y);
				floaterp->setShape(dependent_rect, by_user);
			}
		}
	}
	else
	{
		// If minimized, and origin has changed, set
		// mHasBeenDraggedWhileMinimized to TRUE
		if ((new_rect.mLeft != old_rect.mLeft) ||
			(new_rect.mBottom != old_rect.mBottom))
		{
			mHasBeenDraggedWhileMinimized = TRUE;
		}
	}
}

void LLFloater::setMinimized(BOOL minimize)
{
	const LLFloater::Params& default_params = LLFloater::getDefaultParams();
	S32 floater_header_size = default_params.header_height;
	static LLUICachedControl<S32> minimized_width ("UIMinimizedWidth", 0);

	if (minimize == mMinimized) return;

	if (mMinimizeSignal)
	{
		(*mMinimizeSignal)(this, LLSD(minimize));
	}

	if (minimize)
	{
		// minimized flag should be turned on before release focus
		mMinimized = TRUE;

		mExpandedRect = getRect();

		// If the floater has been dragged while minimized in the
		// past, then locate it at its previous minimized location.
		// Otherwise, ask the view for a minimize position.
		if (mHasBeenDraggedWhileMinimized)
		{
			setOrigin(mPreviousMinimizedLeft, mPreviousMinimizedBottom);
		}
		else
		{
			S32 left, bottom;
			gFloaterView->getMinimizePosition(&left, &bottom);
			setOrigin( left, bottom );
		}

		if (mButtonsEnabled[BUTTON_MINIMIZE])
		{
			mButtonsEnabled[BUTTON_MINIMIZE] = FALSE;
			mButtonsEnabled[BUTTON_RESTORE] = TRUE;
		}

		setBorderVisible(TRUE);

		for(handle_set_iter_t dependent_it = mDependents.begin();
			dependent_it != mDependents.end();
			++dependent_it)
		{
			LLFloater* floaterp = dependent_it->get();
			if (floaterp)
			{
				if (floaterp->isMinimizeable())
				{
					floaterp->setMinimized(TRUE);
				}
				else if (!floaterp->isMinimized())
				{
					floaterp->setVisible(FALSE);
				}
			}
		}

		// Lose keyboard focus when minimized
		releaseFocus();

		for (S32 i = 0; i < 4; i++)
		{
			if (mResizeBar[i] != NULL)
			{
				mResizeBar[i]->setEnabled(FALSE);
			}
			if (mResizeHandle[i] != NULL)
			{
				mResizeHandle[i]->setEnabled(FALSE);
			}
		}
		
		// Reshape *after* setting mMinimized
		reshape( minimized_width, floater_header_size, TRUE);
	}
	else
	{
		// If this window has been dragged while minimized (at any time),
		// remember its position for the next time it's minimized.
		if (mHasBeenDraggedWhileMinimized)
		{
			const LLRect& currentRect = getRect();
			mPreviousMinimizedLeft = currentRect.mLeft;
			mPreviousMinimizedBottom = currentRect.mBottom;
		}

		setOrigin( mExpandedRect.mLeft, mExpandedRect.mBottom );

		if (mButtonsEnabled[BUTTON_RESTORE])
		{
			mButtonsEnabled[BUTTON_MINIMIZE] = TRUE;
			mButtonsEnabled[BUTTON_RESTORE] = FALSE;
		}

		// show dependent floater
		for(handle_set_iter_t dependent_it = mDependents.begin();
			dependent_it != mDependents.end();
			++dependent_it)
		{
			LLFloater* floaterp = dependent_it->get();
			if (floaterp)
			{
				floaterp->setMinimized(FALSE);
				floaterp->setVisible(TRUE);
			}
		}

		for (S32 i = 0; i < 4; i++)
		{
			if (mResizeBar[i] != NULL)
			{
				mResizeBar[i]->setEnabled(isResizable());
			}
			if (mResizeHandle[i] != NULL)
			{
				mResizeHandle[i]->setEnabled(isResizable());
			}
		}
		
		mMinimized = FALSE;

		// Reshape *after* setting mMinimized
		reshape( mExpandedRect.getWidth(), mExpandedRect.getHeight(), TRUE );
	}

	make_ui_sound("UISndWindowClose");
	updateTitleButtons();
	applyTitle ();
}

void LLFloater::setFocus( BOOL b )
{
	if (b && getIsChrome())
	{
		return;
	}
	LLUICtrl* last_focus = gFocusMgr.getLastFocusForGroup(this);
	// a descendent already has focus
	BOOL child_had_focus = hasFocus();

	// give focus to first valid descendent
	LLPanel::setFocus(b);

	if (b)
	{
		// only push focused floaters to front of stack if not in midst of ctrl-tab cycle
		if (!getHost() && !((LLFloaterView*)getParent())->getCycleMode())
		{
			if (!isFrontmost())
			{
				setFrontmost();
			}
		}

		// when getting focus, delegate to last descendent which had focus
		if (last_focus && !child_had_focus && 
			last_focus->isInEnabledChain() &&
			last_focus->isInVisibleChain())
		{
			// *FIX: should handle case where focus doesn't stick
			last_focus->setFocus(TRUE);
		}
	}
	updateTransparency(b ? TT_ACTIVE : TT_INACTIVE);
}

// virtual
void LLFloater::setRect(const LLRect &rect)
{
	LLPanel::setRect(rect);
	layoutDragHandle();
	layoutResizeCtrls();
}

// virtual
void LLFloater::setIsChrome(BOOL is_chrome)
{
	// chrome floaters don't take focus at all
	if (is_chrome)
	{
		// remove focus if we're changing to chrome
		setFocus(FALSE);
		// can't Ctrl-Tab to "chrome" floaters
		setFocusRoot(FALSE);
		mButtons[BUTTON_CLOSE]->setToolTip(LLStringExplicit(getButtonTooltip(Params(), BUTTON_CLOSE, is_chrome)));
	}
	
	LLPanel::setIsChrome(is_chrome);
}

// Change the draw style to account for the foreground state.
void LLFloater::setForeground(BOOL front)
{
	if (front != mForeground)
	{
		mForeground = front;
		if (mDragHandle)
			mDragHandle->setForeground( front );

		if (!front)
		{
			releaseFocus();
		}

		setBackgroundOpaque( front ); 
	}
}

void LLFloater::cleanupHandles()
{
	// remove handles to non-existent dependents
	for(handle_set_iter_t dependent_it = mDependents.begin();
		dependent_it != mDependents.end(); )
	{
		LLFloater* floaterp = dependent_it->get();
		if (!floaterp)
		{
			mDependents.erase(dependent_it++);
		}
		else
		{
			++dependent_it;
		}
	}
}

void LLFloater::setHost(LLMultiFloater* host)
{
	if (mHostHandle.isDead() && host)
	{
		// make buttons smaller for hosted windows to differentiate from parent
		mButtonScale = 0.9f;

		// add tear off button
		if (mCanTearOff)
		{
			mButtonsEnabled[BUTTON_TEAR_OFF] = TRUE;
		}
	}
	else if (!mHostHandle.isDead() && !host)
	{
		mButtonScale = 1.f;
		//mButtonsEnabled[BUTTON_TEAR_OFF] = FALSE;
	}
	updateTitleButtons();
	if (host)
	{
		mHostHandle = host->getHandle();
		mLastHostHandle = host->getHandle();
	}
	else
	{
		mHostHandle.markDead();
	}
}

void LLFloater::moveResizeHandlesToFront()
{
	for( S32 i = 0; i < 4; i++ )
	{
		if( mResizeBar[i] )
		{
			sendChildToFront(mResizeBar[i]);
		}
	}

	for( S32 i = 0; i < 4; i++ )
	{
		if( mResizeHandle[i] )
		{
			sendChildToFront(mResizeHandle[i]);
		}
	}
}

BOOL LLFloater::isFrontmost()
{
	LLFloaterView* floater_view = getParentByType<LLFloaterView>();
	return getVisible()
			&& (floater_view 
				&& floater_view->getFrontmost() == this);
}

void LLFloater::addDependentFloater(LLFloater* floaterp, BOOL reposition)
{
	mDependents.insert(floaterp->getHandle());
	floaterp->mDependeeHandle = getHandle();

	if (reposition)
	{
		floaterp->setRect(gFloaterView->findNeighboringPosition(this, floaterp));
		floaterp->setSnapTarget(getHandle());
	}
	gFloaterView->adjustToFitScreen(floaterp, FALSE);
	if (floaterp->isFrontmost())
	{
		// make sure to bring self and sibling floaters to front
		gFloaterView->bringToFront(floaterp);
	}
}

void LLFloater::addDependentFloater(LLHandle<LLFloater> dependent, BOOL reposition)
{
	LLFloater* dependent_floaterp = dependent.get();
	if(dependent_floaterp)
	{
		addDependentFloater(dependent_floaterp, reposition);
	}
}

void LLFloater::removeDependentFloater(LLFloater* floaterp)
{
	mDependents.erase(floaterp->getHandle());
	floaterp->mDependeeHandle = LLHandle<LLFloater>();
}

BOOL LLFloater::offerClickToButton(S32 x, S32 y, MASK mask, EFloaterButton index)
{
	if( mButtonsEnabled[index] )
	{
		LLButton* my_butt = mButtons[index];
		S32 local_x = x - my_butt->getRect().mLeft;
		S32 local_y = y - my_butt->getRect().mBottom;

		if (
			my_butt->pointInView(local_x, local_y) &&
			my_butt->handleMouseDown(local_x, local_y, mask))
		{
			// the button handled it
			return TRUE;
		}
	}
	return FALSE;
}

BOOL LLFloater::handleScrollWheel(S32 x, S32 y, S32 clicks)
{
	LLPanel::handleScrollWheel(x,y,clicks);
	return TRUE;//always
}

// virtual
BOOL LLFloater::handleMouseDown(S32 x, S32 y, MASK mask)
{
	if( mMinimized )
	{
		// Offer the click to titlebar buttons.
		// Note: this block and the offerClickToButton helper method can be removed
		// because the parent container will handle it for us but we'll keep it here
		// for safety until after reworking the panel code to manage hidden children.
		if(offerClickToButton(x, y, mask, BUTTON_CLOSE)) return TRUE;
		if(offerClickToButton(x, y, mask, BUTTON_RESTORE)) return TRUE;
		if(offerClickToButton(x, y, mask, BUTTON_TEAR_OFF)) return TRUE;
		if(offerClickToButton(x, y, mask, BUTTON_DOCK)) return TRUE;

		// Otherwise pass to drag handle for movement
		return mDragHandle->handleMouseDown(x, y, mask);
	}
	else
	{
		bringToFront( x, y );
		return LLPanel::handleMouseDown( x, y, mask );
	}
}

// virtual
BOOL LLFloater::handleRightMouseDown(S32 x, S32 y, MASK mask)
{
	BOOL was_minimized = mMinimized;
	bringToFront( x, y );
	return was_minimized || LLPanel::handleRightMouseDown( x, y, mask );
}

BOOL LLFloater::handleMiddleMouseDown(S32 x, S32 y, MASK mask)
{
	bringToFront( x, y );
	return LLPanel::handleMiddleMouseDown( x, y, mask );
}


// virtual
BOOL LLFloater::handleDoubleClick(S32 x, S32 y, MASK mask)
{
	BOOL was_minimized = mMinimized;
	setMinimized(FALSE);
	return was_minimized || LLPanel::handleDoubleClick(x, y, mask);
}

void LLFloater::bringToFront( S32 x, S32 y )
{
	if (getVisible() && pointInView(x, y))
	{
		LLMultiFloater* hostp = getHost();
		if (hostp)
		{
			hostp->showFloater(this);
		}
		else
		{
			LLFloaterView* parent = (LLFloaterView*) getParent();
			if (parent)
			{
				parent->bringToFront( this );
			}
		}
	}
}


// virtual
void LLFloater::setVisibleAndFrontmost(BOOL take_focus)
{
	setVisible(TRUE);
	setFrontmost(take_focus);
}

void LLFloater::setFrontmost(BOOL take_focus)
{
	LLMultiFloater* hostp = getHost();
	if (hostp)
	{
		// this will bring the host floater to the front and select
		// the appropriate panel
		hostp->showFloater(this);
	}
	else
	{
		// there are more than one floater view
		// so we need to query our parent directly
		((LLFloaterView*)getParent())->bringToFront(this, take_focus);

		// Make sure to set the appropriate transparency type (STORM-732).
		updateTransparency(hasFocus() || getIsChrome() ? TT_ACTIVE : TT_INACTIVE);
	}
}

void LLFloater::setCanDock(bool b)
{
	if(b != mCanDock)
	{
		mCanDock = b;
		if(mCanDock)
		{
			mButtonsEnabled[BUTTON_DOCK] = !mDocked;
		}
		else
		{
			mButtonsEnabled[BUTTON_DOCK] = FALSE;
		}
	}
	updateTitleButtons();
}

void LLFloater::setDocked(bool docked, bool pop_on_undock)
{
	if(docked != mDocked && mCanDock)
	{
		mDocked = docked;
		mButtonsEnabled[BUTTON_DOCK] = !mDocked;

		if (mDocked)
		{
			setMinimized(FALSE);
			mOpenPositioning = LLFloaterEnums::OPEN_POSITIONING_NONE;
		}

		updateTitleButtons();

		storeDockStateControl();
	}
	
}

// static
void LLFloater::onClickMinimize(LLFloater* self)
{
	if (!self)
		return;
	self->setMinimized( !self->isMinimized() );
}

void LLFloater::onClickTearOff(LLFloater* self)
{
	if (!self)
		return;
	S32 floater_header_size = self->mHeaderHeight;
	LLMultiFloater* host_floater = self->getHost();
	if (host_floater) //Tear off
	{
		LLRect new_rect;
		host_floater->removeFloater(self);
		// reparent to floater view
		gFloaterView->addChild(self);

		self->openFloater(self->getKey());
		
		// only force position for floaters that don't have that data saved
		if (self->mRectControl.size() <= 1)
		{
			new_rect.setLeftTopAndSize(host_floater->getRect().mLeft + 5, host_floater->getRect().mTop - floater_header_size - 5, self->getRect().getWidth(), self->getRect().getHeight());
			self->setRect(new_rect);
		}
		gFloaterView->adjustToFitScreen(self, FALSE);
		// give focus to new window to keep continuity for the user
		self->setFocus(TRUE);
		self->setTornOff(true);
	}
	else  //Attach to parent.
	{
		LLMultiFloater* new_host = (LLMultiFloater*)self->mLastHostHandle.get();
		if (new_host)
		{
			self->setMinimized(FALSE); // to reenable minimize button if it was minimized
			new_host->showFloater(self);
			// make sure host is visible
			new_host->openFloater(new_host->getKey());
		}
		self->setTornOff(false);
	}
	self->updateTitleButtons();
}

// static
void LLFloater::onClickDock(LLFloater* self)
{
	if(self && self->mCanDock)
	{
		self->setDocked(!self->mDocked, true);
	}
}

// static
void LLFloater::onClickHelp( LLFloater* self )
{
	if (self && LLUI::sHelpImpl)
	{
		// find the current help context for this floater
		std::string help_topic;
		if (self->findHelpTopic(help_topic))
		{
			LLUI::sHelpImpl->showTopic(help_topic);
		}
	}
}

// static 
LLFloater* LLFloater::getClosableFloaterFromFocus()
{
	LLFloater* focused_floater = NULL;
	LLInstanceTracker<LLFloater>::instance_iter it = beginInstances();
	LLInstanceTracker<LLFloater>::instance_iter end_it = endInstances();
	for (; it != end_it; ++it)
	{
		if (it->hasFocus())
		{
			break;
		}
	}

	if (it == endInstances())
	{
		// nothing found, return
		return NULL;
	}

	// The focused floater may not be closable,
	// Find and close a parental floater that is closeable, if any.
	LLFloater* prev_floater = NULL;
	for(LLFloater* floater_to_close = focused_floater;
		NULL != floater_to_close; 
		floater_to_close = gFloaterView->getParentFloater(floater_to_close))
	{
		if(floater_to_close->isCloseable())
		{
			return floater_to_close;
		}

		// If floater has as parent root view
		// gFloaterView->getParentFloater(floater_to_close) returns
		// the same floater_to_close, so we need to check this.
		if (prev_floater == floater_to_close) {
			break;
		}
		prev_floater = floater_to_close;
	}

	return NULL;
}

// static
void LLFloater::closeFocusedFloater()
{
	LLFloater* floater_to_close = LLFloater::getClosableFloaterFromFocus();
	if(floater_to_close)
	{
		floater_to_close->closeFloater();
	}

	// if nothing took focus after closing focused floater
	// give it to next floater (to allow closing multiple windows via keyboard in rapid succession)
	if (gFocusMgr.getKeyboardFocus() == NULL)
	{
		// HACK: use gFloaterView directly in case we are using Ctrl-W to close snapshot window
		// which sits in gSnapshotFloaterView, and needs to pass focus on to normal floater view
		gFloaterView->focusFrontFloater();
	}
}


// static
void LLFloater::onClickClose( LLFloater* self )
{
	if (!self)
		return;
	self->onClickCloseBtn();
}

void	LLFloater::onClickCloseBtn()
{
	closeFloater(false);
}


// virtual
void LLFloater::draw()
{
	const F32 alpha = getCurrentTransparency();

	// draw background
	if( isBackgroundVisible() )
	{
		drawShadow(this);

		S32 left = LLPANEL_BORDER_WIDTH;
		S32 top = getRect().getHeight() - LLPANEL_BORDER_WIDTH;
		S32 right = getRect().getWidth() - LLPANEL_BORDER_WIDTH;
		S32 bottom = LLPANEL_BORDER_WIDTH;

		LLUIImage* image = NULL;
		LLColor4 color;
		LLColor4 overlay_color;
		if (isBackgroundOpaque())
		{
			// NOTE: image may not be set
			image = getBackgroundImage();
			color = getBackgroundColor();
			overlay_color = getBackgroundImageOverlay();
		}
		else
		{
			image = getTransparentImage();
			color = getTransparentColor();
			overlay_color = getTransparentImageOverlay();
		}

		if (image)
		{
			// We're using images for this floater's backgrounds
			image->draw(getLocalRect(), overlay_color % alpha);
		}
		else
		{
			// We're not using images, use old-school flat colors
			gl_rect_2d( left, top, right, bottom, color % alpha );

			// draw highlight on title bar to indicate focus.  RDW
			if(hasFocus() 
				&& !getIsChrome() 
				&& !getCurrentTitle().empty())
			{
				static LLUIColor titlebar_focus_color = LLUIColorTable::instance().getColor("TitleBarFocusColor");
				
				const LLFontGL* font = LLFontGL::getFontSansSerif();
				LLRect r = getRect();
				gl_rect_2d_offset_local(0, r.getHeight(), r.getWidth(), r.getHeight() - (S32)font->getLineHeight() - 1, 
					titlebar_focus_color % alpha, 0, TRUE);
			}
		}
	}

	LLPanel::updateDefaultBtn();

	if( getDefaultButton() )
	{
		if (hasFocus() && getDefaultButton()->getEnabled())
		{
			LLFocusableElement* focus_ctrl = gFocusMgr.getKeyboardFocus();
			// is this button a direct descendent and not a nested widget (e.g. checkbox)?
			BOOL focus_is_child_button = dynamic_cast<LLButton*>(focus_ctrl) != NULL && dynamic_cast<LLButton*>(focus_ctrl)->getParent() == this;
			// only enable default button when current focus is not a button
			getDefaultButton()->setBorderEnabled(!focus_is_child_button);
		}
		else
		{
			getDefaultButton()->setBorderEnabled(FALSE);
		}
	}
	if (isMinimized())
	{
		for (S32 i = 0; i < BUTTON_COUNT; i++)
		{
			drawChild(mButtons[i]);
		}
		drawChild(mDragHandle, 0, 0, TRUE);
	}
	else
	{
		// don't call LLPanel::draw() since we've implemented custom background rendering
		LLView::draw();
	}

	// update tearoff button for torn off floaters
	// when last host goes away
	if (mCanTearOff && !getHost())
	{
		LLFloater* old_host = mLastHostHandle.get();
		if (!old_host)
		{
			setCanTearOff(FALSE);
		}
	}
}

void	LLFloater::drawShadow(LLPanel* panel)
{
	S32 left = LLPANEL_BORDER_WIDTH;
	S32 top = panel->getRect().getHeight() - LLPANEL_BORDER_WIDTH;
	S32 right = panel->getRect().getWidth() - LLPANEL_BORDER_WIDTH;
	S32 bottom = LLPANEL_BORDER_WIDTH;

	static LLUICachedControl<S32> shadow_offset_S32 ("DropShadowFloater", 0);
	static LLUIColor shadow_color_cached = LLUIColorTable::instance().getColor("ColorDropShadow");
	LLColor4 shadow_color = shadow_color_cached;
	F32 shadow_offset = (F32)shadow_offset_S32;

	if (!panel->isBackgroundOpaque())
	{
		shadow_offset *= 0.2f;
		shadow_color.mV[VALPHA] *= 0.5f;
	}
	gl_drop_shadow(left, top, right, bottom, 
		shadow_color % getCurrentTransparency(),
		llround(shadow_offset));
}

void LLFloater::updateTransparency(LLView* view, ETypeTransparency transparency_type)
{
	child_list_t children = *view->getChildList();
	child_list_t::iterator it = children.begin();

	LLUICtrl* ctrl = dynamic_cast<LLUICtrl*>(view);
	if (ctrl)
	{
		ctrl->setTransparencyType(transparency_type);
	}

	for(; it != children.end(); ++it)
	{
		updateTransparency(*it, transparency_type);
	}
}

void LLFloater::updateTransparency(ETypeTransparency transparency_type)
{
	updateTransparency(this, transparency_type);
}

void	LLFloater::setCanMinimize(BOOL can_minimize)
{
	// if removing minimize/restore button programmatically,
	// go ahead and unminimize floater
	mCanMinimize = can_minimize;
	if (!can_minimize)
	{
		setMinimized(FALSE);
	}

	mButtonsEnabled[BUTTON_MINIMIZE] = can_minimize && !isMinimized();
	mButtonsEnabled[BUTTON_RESTORE]  = can_minimize &&  isMinimized();

	updateTitleButtons();
}

void	LLFloater::setCanClose(BOOL can_close)
{
	mCanClose = can_close;
	mButtonsEnabled[BUTTON_CLOSE] = can_close;

	updateTitleButtons();
}

void	LLFloater::setCanTearOff(BOOL can_tear_off)
{
	mCanTearOff = can_tear_off;
	mButtonsEnabled[BUTTON_TEAR_OFF] = mCanTearOff && !mHostHandle.isDead();

	updateTitleButtons();
}


void LLFloater::setCanResize(BOOL can_resize)
{
	mResizable = can_resize;
	enableResizeCtrls(can_resize);
}

void LLFloater::setCanDrag(BOOL can_drag)
{
	// if we delete drag handle, we no longer have access to the floater's title
	// so just enable/disable it
	if (!can_drag && mDragHandle->getEnabled())
	{
		mDragHandle->setEnabled(FALSE);
	}
	else if (can_drag && !mDragHandle->getEnabled())
	{
		mDragHandle->setEnabled(TRUE);
	}
}

bool LLFloater::getCanDrag()
{
	return mDragHandle->getEnabled();
}


void LLFloater::updateTitleButtons()
{
	static LLUICachedControl<S32> floater_close_box_size ("UIFloaterCloseBoxSize", 0);
	static LLUICachedControl<S32> close_box_from_top ("UICloseBoxFromTop", 0);
	LLRect buttons_rect;
	S32 button_count = 0;
	for (S32 i = 0; i < BUTTON_COUNT; i++)
	{
		if (!mButtons[i])
		{
			continue;
		}

		bool enabled = mButtonsEnabled[i];
		if (i == BUTTON_HELP)
		{
			// don't show the help button if the floater is minimized
			// or if it is a docked tear-off floater
			if (isMinimized() || (mButtonsEnabled[BUTTON_TEAR_OFF] && ! mTornOff))
			{
				enabled = false;
			}
		}
		if (i == BUTTON_CLOSE && mButtonScale != 1.f)
		{
			//*HACK: always render close button for hosted floaters so
			//that users don't accidentally hit the button when
			//closing multiple windows in the chatterbox
			enabled = true;
		}

		mButtons[i]->setEnabled(enabled);

		if (enabled)
		{
			button_count++;

			LLRect btn_rect;
			if (mDragOnLeft)
			{
				btn_rect.setLeftTopAndSize(
					LLPANEL_BORDER_WIDTH,
					getRect().getHeight() - close_box_from_top - (floater_close_box_size + 1) * button_count,
					llround((F32)floater_close_box_size * mButtonScale),
					llround((F32)floater_close_box_size * mButtonScale));
			}
			else
			{
				btn_rect.setLeftTopAndSize(
					getRect().getWidth() - LLPANEL_BORDER_WIDTH - (floater_close_box_size + 1) * button_count,
					getRect().getHeight() - close_box_from_top,
					llround((F32)floater_close_box_size * mButtonScale),
					llround((F32)floater_close_box_size * mButtonScale));
			}

			// first time here, init 'buttons_rect'
			if(1 == button_count)
			{
				buttons_rect = btn_rect;
			}
			else
			{
				// if mDragOnLeft=true then buttons are on top-left side vertically aligned
				// title is not displayed in this case, calculating 'buttons_rect' for future use
				mDragOnLeft ? buttons_rect.mBottom -= btn_rect.mBottom : 
					buttons_rect.mLeft = btn_rect.mLeft;
			}
			mButtons[i]->setRect(btn_rect);
			mButtons[i]->setVisible(TRUE);
			// the restore button should have a tab stop so that it takes action when you Ctrl-Tab to a minimized floater
			mButtons[i]->setTabStop(i == BUTTON_RESTORE);
		}
		else
		{
			mButtons[i]->setVisible(FALSE);
		}
	}
	if (mDragHandle)
	{
		localRectToOtherView(buttons_rect, &buttons_rect, mDragHandle);
		mDragHandle->setButtonsRect(buttons_rect);
	}
}

void LLFloater::buildButtons(const Params& floater_params)
{
	static LLUICachedControl<S32> floater_close_box_size ("UIFloaterCloseBoxSize", 0);
	static LLUICachedControl<S32> close_box_from_top ("UICloseBoxFromTop", 0);
	for (S32 i = 0; i < BUTTON_COUNT; i++)
	{
		if (mButtons[i])
		{
			removeChild(mButtons[i]);
			delete mButtons[i];
			mButtons[i] = NULL;
		}
		
		LLRect btn_rect;
		if (mDragOnLeft)
		{
			btn_rect.setL…