/** 
 * @file llnotify.cpp
 * @brief Non-blocking notification that doesn't take keyboard focus.
 *
 * $LicenseInfo:firstyear=2003&license=viewergpl$
 * 
 * Copyright (c) 2003-2009, Linden Research, Inc.
 * 
 * Second Life Viewer Source Code
 * The source code in this file ("Source Code") is provided by Linden Lab
 * to you under the terms of the GNU General Public License, version 2.0
 * ("GPL"), unless you have obtained a separate licensing agreement
 * ("Other License"), formally executed by you and Linden Lab.  Terms of
 * the GPL can be found in doc/GPL-license.txt in this distribution, or
 * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
 * 
 * There are special exceptions to the terms and conditions of the GPL as
 * it is applied to this Source Code. View the full text of the exception
 * in the file doc/FLOSS-exception.txt in this software distribution, or
 * online at
 * http://secondlifegrid.net/programs/open_source/licensing/flossexception
 * 
 * By copying, modifying or distributing this software, you acknowledge
 * that you have read and understood your obligations described above,
 * and agree to abide by those obligations.
 * 
 * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
 * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
 * COMPLETENESS OR PERFORMANCE.
 * $/LicenseInfo$
 */

#include "llviewerprecompiledheaders.h"

#include "llnotify.h"

#include "llchat.h"
#include "llfocusmgr.h"
#include "llrender.h"

#include "llbutton.h"
#include "llfocusmgr.h"
#include "llglheaders.h"
#include "lliconctrl.h"
#include "lltextbox.h"
#include "lltexteditor.h"
#include "lluiconstants.h"
#include "llui.h"
#include "llxmlnode.h"
#include "llalertdialog.h"
#include "llviewercontrol.h"
#include "llviewerdisplay.h"
#include "llviewerimagelist.h"
#include "llfloaterchat.h"	// for add_chat_history()
#include "lloverlaybar.h" // for gOverlayBar
#include "lluictrlfactory.h"


// Globals
LLNotifyBoxView* gNotifyBoxView = NULL;

const F32 ANIMATION_TIME = 0.333f;
const S32 BOTTOM_PAD = VPAD * 3;


// statics
S32 LLNotifyBox::sNotifyBoxCount = 0;
const LLFontGL* LLNotifyBox::sFont = NULL;
const LLFontGL* LLNotifyBox::sFontSmall = NULL;
std::map<std::string, LLNotifyBox*> LLNotifyBox::sOpenUniqueNotifyBoxes;


//---------------------------------------------------------------------------
// LLNotifyBox
//---------------------------------------------------------------------------

//static 
void LLNotifyBox::initClass()
{
	LLNotificationChannel::buildChannel("Notifications", "Visible", LLNotificationFilters::filterBy<std::string>(&LLNotification::getType, "notify"));
	LLNotificationChannel::buildChannel("NotificationTips", "Visible", LLNotificationFilters::filterBy<std::string>(&LLNotification::getType, "notifytip"));

	LLNotifications::instance().getChannel("Notifications")->connectChanged(&LLNotifyBox::onNotification);
	LLNotifications::instance().getChannel("NotificationTips")->connectChanged(&LLNotifyBox::onNotification);
}

//static 
bool LLNotifyBox::onNotification(const LLSD& notify)
{
	LLNotificationPtr notification = LLNotifications::instance().find(notify["id"].asUUID());
	
	if (!notification) return false;

	if(notify["sigtype"].asString() == "add" || notify["sigtype"].asString() == "change")
	{
		//bring existing notification to top
		LLNotifyBox* boxp = LLNotifyBox::getInstance(notification->getID());
		if (boxp && !boxp->isDead())
		{
			gNotifyBoxView->showOnly(boxp);
		}
		else
		{
			bool is_script_dialog = (notification->getName() == "ScriptDialog" || notification->getName() == "ScriptDialogGroup");
			LLNotifyBox* notify_box = new LLNotifyBox(
				notification,
				is_script_dialog); //layout_script_dialog);

			gNotifyBoxView->addChild(notify_box);
		}
	}
	else if (notify["sigtype"].asString() == "delete")
	{
		LLNotifyBox* boxp = LLNotifyBox::getInstance(notification->getID());
		if (boxp && !boxp->isDead())
		{
			boxp->close();
		}
	}

	return false;
}

//---------------------------------------------------------------------------
LLNotifyBox::LLNotifyBox(LLNotificationPtr notification,
						 BOOL layout_script_dialog)
	:	LLPanel(notification->getName(), LLRect(), BORDER_NO),
		LLEventTimer(notification->getExpiration() == LLDate() 
			? LLDate(LLDate::now().secondsSinceEpoch() + (F64)gSavedSettings.getF32("NotifyTipDuration")) 
			: notification->getExpiration()),
		LLInstanceTracker<LLNotifyBox, LLUUID>(notification->getID()),
	  mNotification(notification),
	  mIsTip(notification->getType() == "notifytip"),
	  mAnimating(TRUE),
	  mNextBtn(NULL),
	  mNumOptions(0),
	  mNumButtons(0),
	  mAddedDefaultBtn(FALSE),
	  mLayoutScriptDialog(layout_script_dialog)
{
	// clicking on a button does not steal current focus
	setIsChrome(TRUE);

	// class init
	if (!sFont)
	{
		sFont = LLFontGL::getFontSansSerif();
		sFontSmall = LLFontGL::getFontSansSerifSmall();
	}

	// setup paramaters
	mMessage = notification->getMessage();

	// initialize
	setFocusRoot(!mIsTip);

	// caution flag can be set explicitly by specifying it in the
	// notification payload, or it can be set implicitly if the
	// notify xml template specifies that it is a caution
	//
	// tip-style notification handle 'caution' differently -
	// they display the tip in a different color
	mIsCaution = notification->getPriority() >= NOTIFICATION_PRIORITY_HIGH;

	// Only animate first window
	if( gNotifyBoxView->getChildCount() > 0 )
		mAnimating = FALSE;
	else
		mAnimating = TRUE;

	LLNotificationFormPtr form(notification->getForm());

	mNumOptions = form->getNumElements();
		  
	LLRect rect = mIsTip ? getNotifyTipRect(mMessage)
		   		  		 : getNotifyRect(mNumOptions, layout_script_dialog, mIsCaution);
	setRect(rect);
	setFollows(mIsTip ? (FOLLOWS_BOTTOM|FOLLOWS_RIGHT) : (FOLLOWS_TOP|FOLLOWS_RIGHT));
	setBackgroundVisible(FALSE);
	setBackgroundOpaque(TRUE);

	LLIconCtrl* icon;
	LLTextEditor* text;

	const S32 TOP = getRect().getHeight() - (mIsTip ? (S32)sFont->getLineHeight() : 32);
	const S32 BOTTOM = (S32)sFont->getLineHeight();
	S32 x = HPAD + HPAD;
	S32 y = TOP;

	if (mIsTip)
	{
		// use the tip notification icon
		icon = new LLIconCtrl(std::string("icon"), LLRect(x, y, x+32, TOP-32), std::string("notify_tip_icon.tga"));
	}
	else if (mIsCaution)
	{
		// use the caution notification icon
		icon = new LLIconCtrl(std::string("icon"), LLRect(x, y, x+32, TOP-32), std::string("notify_caution_icon.tga"));
	}
	else
	{
		// use the default notification icon
		icon = new LLIconCtrl(std::string("icon"), LLRect(x, y, x+32, TOP-32), std::string("notify_box_icon.tga"));
	}

	icon->setMouseOpaque(FALSE);
	addChild(icon);

	x += HPAD + HPAD + 32;

	// add a caution textbox at the top of a caution notification
	LLTextBox* caution_box = NULL;
	if (mIsCaution && !mIsTip)
	{
		S32 caution_height = ((S32)sFont->getLineHeight() * 2) + VPAD;
		caution_box = new LLTextBox(
			std::string("caution_box"), 
			LLRect(x, y, getRect().getWidth() - 2, caution_height), 
			LLStringUtil::null, 
			sFont, 
			FALSE);

		caution_box->setFontStyle(LLFontGL::BOLD);
		caution_box->setColor(gColors.getColor("NotifyCautionWarnColor"));
		caution_box->setBackgroundColor(gColors.getColor("NotifyCautionBoxColor"));
		caution_box->setBorderVisible(FALSE);
		caution_box->setWrappedText(notification->getMessage());
		
		addChild(caution_box);

		// adjust the vertical position of the next control so that 
		// it appears below the caution textbox
		y = y - caution_height;
	}
	else
	{

		const S32 BTN_TOP = BOTTOM_PAD + (((mNumOptions-1+2)/3)) * (BTN_HEIGHT+VPAD);

		// Tokenization on \n is handled by LLTextBox

		const S32 MAX_LENGTH = 512 + 20 + 
			DB_FIRST_NAME_BUF_SIZE + 
			DB_LAST_NAME_BUF_SIZE +
			DB_INV_ITEM_NAME_BUF_SIZE;  // For script dialogs: add space for title.

		text = new LLTextEditor(std::string("box"),
								LLRect(x, y, getRect().getWidth()-2, mIsTip ? BOTTOM : BTN_TOP+16),
								MAX_LENGTH,
								mMessage,
								sFont,
								FALSE);
		text->setWordWrap(TRUE);
		text->setTabStop(FALSE);
		text->setMouseOpaque(FALSE);
		text->setBorderVisible(FALSE);
		text->setTakesNonScrollClicks(FALSE);
		text->setHideScrollbarForShortDocs(TRUE);
		text->setReadOnlyBgColor ( LLColor4::transparent ); // the background color of the box is manually 
															// rendered under the text box, therefore we want 
															// the actual text box to be transparent
		text->setReadOnlyFgColor ( gColors.getColor("NotifyTextColor") );
		text->setEnabled(FALSE); // makes it read-only
		text->setTabStop(FALSE); // can't tab to it (may be a problem for scrolling via keyboard)
		addChild(text);
	}

	if (mIsTip)
	{
		// TODO: Make a separate archive for these.
		LLChat chat(mMessage);
		chat.mSourceType = CHAT_SOURCE_SYSTEM;
		LLFloaterChat::getInstance(LLSD())->addChatHistory(chat);
	}
	else
	{
		LLButton* btn;
		btn = new LLButton(std::string("next"),
						   LLRect(getRect().getWidth()-26, BOTTOM_PAD + 20, getRect().getWidth()-2, BOTTOM_PAD),
						   std::string("notify_next.png"),
						   std::string("notify_next.png"),
						   LLStringUtil::null,
						   onClickNext,
						   this,
						   sFont);
		btn->setScaleImage(TRUE);
		btn->setToolTip(std::string("Next")); // *TODO: Translate
		addChild(btn);
		mNextBtn = btn;

		for (S32 i = 0; i < mNumOptions; i++)
		{

			LLSD form_element = form->getElement(i);
			if (form_element["type"].asString() != "button") 
			{
				continue;
			}

			addButton(form_element["name"].asString(), form_element["text"].asString(), TRUE, form_element["default"].asBoolean());
		}

		if (mNumButtons == 0)
		{
			addButton("OK", "OK", FALSE, TRUE);
			mAddedDefaultBtn = TRUE;
		}
		
		sNotifyBoxCount++;

		// If this is the only notify box, don't show the next button
		if (sNotifyBoxCount == 1
			&& mNextBtn)
		{
			mNextBtn->setVisible(FALSE);
		}
	}
}

// virtual
LLNotifyBox::~LLNotifyBox()
{
	std::for_each(mBtnCallbackData.begin(), mBtnCallbackData.end(), DeletePointer());
}

// virtual
LLButton* LLNotifyBox::addButton(const std::string& name, const std::string& label, BOOL is_option, BOOL is_default)
{
	// make caution notification buttons slightly narrower
	// so that 3 of them can fit without overlapping the "next" button
	S32 btn_width = mIsCaution? 84 : 90;

	LLRect btn_rect;
	LLButton* btn;
	S32 btn_height= BTN_HEIGHT;
	const LLFontGL* font = sFont;
	S32 ignore_pad = 0;
	S32 button_index = mNumButtons;
	S32 index = button_index;
	S32 x = (HPAD * 4) + 32;

	if (mLayoutScriptDialog)
	{
		// Add two "blank" option spaces, before the "Ignore" button
		index = button_index + 2;
		if (button_index == 0)
		{
			// Ignore button is smaller, less wide
			btn_height = BTN_HEIGHT_SMALL;
			font = sFontSmall;
			ignore_pad = 10;
		}
	}

	btn_rect.setOriginAndSize(x + (index % 3) * (btn_width+HPAD+HPAD) + ignore_pad,
		BOTTOM_PAD + (index / 3) * (BTN_HEIGHT+VPAD),
		btn_width - 2*ignore_pad,
		btn_height);

	InstanceAndS32* userdata = new InstanceAndS32;
	userdata->mSelf = this;
	userdata->mButtonName = is_option ? name : "";

	mBtnCallbackData.push_back(userdata);


	btn = new LLButton(name, btn_rect, "", onClickButton, userdata);
	btn->setLabel(label);
	btn->setFont(font);

	if (mIsCaution)
	{
		btn->setImageColor(LLUI::sColorsGroup->getColor("ButtonCautionImageColor"));
		btn->setDisabledImageColor(LLUI::sColorsGroup->getColor("ButtonCautionImageColor"));
	}

	addChild(btn, -1);

	if (is_default)
	{
		setDefaultBtn(btn);
	}

	mNumButtons++;
	return btn;
}

BOOL LLNotifyBox::handleMouseUp(S32 x, S32 y, MASK mask)
{
	if (mIsTip)
	{
		mNotification->respond(mNotification->getResponseTemplate(LLNotification::WITH_DEFAULT_BUTTON));

		close();
		return TRUE;
	}

	setFocus(TRUE);

	return LLPanel::handleMouseUp(x, y, mask);
}

// virtual
BOOL LLNotifyBox::handleRightMouseDown(S32 x, S32 y, MASK mask)
{
	if (!mIsTip)
	{
		moveToBack(true);
		return TRUE;
	}

	return LLPanel::handleRightMouseDown(x, y, mask);
}


// virtual
void LLNotifyBox::draw()
{
	// If we are teleporting, stop the timer and restart it when the teleporting completes
	if (gTeleportDisplay)
	{
		mEventTimer.stop();
	}
	else if (!mEventTimer.getStarted())
	{
		mEventTimer.start();
	}
		
	F32 display_time = mAnimateTimer.getElapsedTimeF32();

	if (mAnimating && display_time < ANIMATION_TIME)
	{
		glMatrixMode(GL_MODELVIEW);
		LLUI::pushMatrix();

		S32 height = getRect().getHeight();
		F32 fraction = display_time / ANIMATION_TIME;
		F32 voffset = (1.f - fraction) * height;
		if (mIsTip) voffset *= -1.f;
		LLUI::translate(0.f, voffset, 0.f);
		
		drawBackground();

		LLPanel::draw();

		LLUI::popMatrix();
	}
	else
	{
		if(mAnimating)
		{
			mAnimating = FALSE;
			if(!mIsTip) 
			{
				// hide everyone behind me once I'm done animating
				gNotifyBoxView->showOnly(this);
			}
		}
		drawBackground();
		LLPanel::draw();
	}
}

void LLNotifyBox::drawBackground() const
{
	LLUIImagePtr imagep = LLUI::getUIImage("rounded_square.tga");
	if (imagep)
	{
		gGL.getTexUnit(0)->bind(imagep->getImage());
		// set proper background color depending on whether notify box is a caution or not
		LLColor4 color = mIsCaution? gColors.getColor("NotifyCautionBoxColor") : gColors.getColor("NotifyBoxColor");
		if(gFocusMgr.childHasKeyboardFocus( this ))
		{
			const S32 focus_width = 2;
			color = gColors.getColor("FloaterFocusBorderColor");
			gGL.color4fv(color.mV);
			gl_segmented_rect_2d_tex(-focus_width, getRect().getHeight() + focus_width, 
									getRect().getWidth() + focus_width, -focus_width,
									imagep->getTextureWidth(), imagep->getTextureHeight(),
									16, mIsTip ? ROUNDED_RECT_TOP : ROUNDED_RECT_BOTTOM);
			color = gColors.getColor("ColorDropShadow");
			gGL.color4fv(color.mV);
			gl_segmented_rect_2d_tex(0, getRect().getHeight(), getRect().getWidth(), 0, imagep->getTextureWidth(), imagep->getTextureHeight(), 16, mIsTip ? ROUNDED_RECT_TOP : ROUNDED_RECT_BOTTOM);

			if( mIsCaution )
				color = gColors.getColor("NotifyCautionBoxColor");
			else
				color = gColors.getColor("NotifyBoxColor");

			gGL.color4fv(color.mV);
			gl_segmented_rect_2d_tex(1, getRect().getHeight()-1, getRect().getWidth()-1, 1, imagep->getTextureWidth(), imagep->getTextureHeight(), 16, mIsTip ? ROUNDED_RECT_TOP : ROUNDED_RECT_BOTTOM);
		}
		else
		{
			gGL.color4fv(color.mV);
			gl_segmented_rect_2d_tex(0, getRect().getHeight(), getRect().getWidth(), 0, imagep->getTextureWidth(), imagep->getTextureHeight(), 16, mIsTip ? ROUNDED_RECT_TOP : ROUNDED_RECT_BOTTOM);
		}
	}
}


void LLNotifyBox::close()
{
	BOOL isTipTmp = mIsTip;

	if (!mIsTip)
	{
		sNotifyBoxCount--;
	}

	die();
	if(!isTipTmp)
	{
		LLNotifyBox * front = gNotifyBoxView->getFirstNontipBox();
		if(front)
		{
			gNotifyBoxView->showOnly(front);
			// we're assuming that close is only called by user action (for non-tips),
			// so we then give focus to the next close button
			if (front->getDefaultButton())
			{
				front->getDefaultButton()->setFocus(TRUE);
			}
			gFocusMgr.triggerFocusFlash(); // TODO it's ugly to call this here
		}
	}
}

void LLNotifyBox::format(std::string& msg, const LLStringUtil::format_map_t& args)
{
	// XUI:translate!
	LLStringUtil::format_map_t targs = args;
	targs["[SECOND_LIFE]"] = "Second Life";
	LLStringUtil::format(msg, targs);
}


/*virtual*/
BOOL LLNotifyBox::tick()
{
	if (mIsTip)
	{
		close();
	}
	return FALSE;
}

void LLNotifyBox::setVisible(BOOL visible)
{
	// properly set the status of the next button
	if(visible && !mIsTip)
	{
		mNextBtn->setVisible(sNotifyBoxCount > 1);
		mNextBtn->setEnabled(sNotifyBoxCount > 1);
	}
	LLPanel::setVisible(visible);
}

void LLNotifyBox::moveToBack(bool getfocus)
{
	// Move this dialog to the back.
	gNotifyBoxView->sendChildToBack(this);
	if(!mIsTip && mNextBtn)
	{
		mNextBtn->setVisible(FALSE);

		// And enable the next button on the frontmost one, if there is one
		if (gNotifyBoxView->getChildCount() > 0)
		{
			LLNotifyBox* front = gNotifyBoxView->getFirstNontipBox();
			if (front)
			{
				gNotifyBoxView->showOnly(front);
				if (getfocus)
				{
					// if are called from a user interaction
					// we give focus to the next next button
					if (front->mNextBtn != NULL)
					{
						front->mNextBtn->setFocus(TRUE);
					}
					gFocusMgr.triggerFocusFlash(); // TODO: it's ugly to call this here
				}
			}
		}
	}
}


// static
LLRect LLNotifyBox::getNotifyRect(S32 num_options, BOOL layout_script_dialog, BOOL is_caution)
{
	S32 notify_height = gSavedSettings.getS32("NotifyBoxHeight");
	if (is_caution)
	{
		// make caution-style dialog taller to accomodate extra text,
		// as well as causing the accept/decline buttons to be drawn
		// in a different position, to help prevent "quick-click-through"
		// of many permissions prompts
		notify_height = gSavedSettings.getS32("PermissionsCautionNotifyBoxHeight");
	}
	const S32 NOTIFY_WIDTH = gSavedSettings.getS32("NotifyBoxWidth");

	const S32 TOP = gNotifyBoxView->getRect().getHeight();
	const S32 RIGHT = gNotifyBoxView->getRect().getWidth();
	const S32 LEFT = RIGHT - NOTIFY_WIDTH;

	if (num_options < 1)
	{
		num_options = 1;
	}

	// Add two "blank" option spaces.
	if (layout_script_dialog)
	{
		num_options += 2;
	}

	S32 additional_lines = (num_options-1) / 3;

	notify_height += additional_lines * (BTN_HEIGHT + VPAD);

	return LLRect(LEFT, TOP, RIGHT, TOP-notify_height);
}

// static
LLRect LLNotifyBox::getNotifyTipRect(const std::string &utf8message)
{
	S32 line_count = 1;
	LLWString message = utf8str_to_wstring(utf8message);
	S32 message_len = message.length();

	const S32 NOTIFY_WIDTH = gSavedSettings.getS32("NotifyBoxWidth");
	// Make room for the icon area.
	const S32 text_area_width = NOTIFY_WIDTH - HPAD * 4 - 32;

	const llwchar* wchars = message.c_str();
	const llwchar* start = wchars;
	const llwchar* end;
	S32 total_drawn = 0;
	BOOL done = FALSE;

	do
	{
		line_count++;

		for (end=start; *end != 0 && *end != '\n'; end++)
			;

		if( *end == 0 )
		{
			end = wchars + message_len;
			done = TRUE;
		}
		
		S32 remaining = end - start;
		while( remaining )
		{
			S32 drawn = sFont->maxDrawableChars( start, (F32)text_area_width, remaining, TRUE );

			if( 0 == drawn )
			{
				drawn = 1;  // Draw at least one character, even if it doesn't all fit. (avoids an infinite loop)
			}

			total_drawn += drawn; 
			start += drawn;
			remaining -= drawn;
			
			if( total_drawn < message_len )
			{
				if( (wchars[ total_drawn ] != '\n') )
				{
					// wrap because line was too long
					line_count++;
				}
			}
			else
			{
				done = TRUE;
			}
		}

		total_drawn++;	// for '\n'
		end++;
		start = end;
	} while( !done );

	const S32 MIN_NOTIFY_HEIGHT = 72;
	const S32 MAX_NOTIFY_HEIGHT = 600;
	S32 notify_height = llceil((F32) (line_count+1) * sFont->getLineHeight());
	if(gOverlayBar)
	{
		notify_height += gOverlayBar->getBoundingRect().mTop;
	}
	else
	{
		// *FIX: this is derived from the padding caused by the
		// rounded rects, shouldn't be a const here.
		notify_height += 10;  
	}
	notify_height += VPAD;
	notify_height = llclamp(notify_height, MIN_NOTIFY_HEIGHT, MAX_NOTIFY_HEIGHT);

	const S32 RIGHT = gNotifyBoxView->getRect().getWidth();
	const S32 LEFT = RIGHT - NOTIFY_WIDTH;

	// Make sure it goes slightly offscreen
	return LLRect(LEFT, notify_height-1, RIGHT, -1);
}


// static
void LLNotifyBox::onClickButton(void* data)
{
	InstanceAndS32* self_and_button = (InstanceAndS32*)data;
	LLNotifyBox* self = self_and_button->mSelf;
	std::string button_name = self_and_button->mButtonName;

	LLSD response = self->mNotification->getResponseTemplate();
	if (!self->mAddedDefaultBtn && !button_name.empty())
	{
		response[button_name] = true;
	}
	self->mNotification->respond(response);

	self->close();
}


// static
void LLNotifyBox::onClickNext(void* data)
{
	LLNotifyBox* self = static_cast<LLNotifyBox*>(data);
	self->moveToBack(true);
}


LLNotifyBoxView::LLNotifyBoxView(const std::string& name, const LLRect& rect, BOOL mouse_opaque, U32 follows)
	: LLUICtrl(name,rect,mouse_opaque,NULL,NULL,follows) 
{
}

LLNotifyBox * LLNotifyBoxView::getFirstNontipBox() const
{
	// *TODO: Don't make assumptions like this!
	// assumes every child is a notify box
	for(child_list_const_iter_t iter = getChildList()->begin();
			iter != getChildList()->end();
			iter++)
	{
		// hack! *TODO: Integrate llnotify and llgroupnotify
		if(isGroupNotifyBox(*iter))
		{
			continue;
		}
		
		LLNotifyBox* box = (LLNotifyBox*)(*iter);
		if(!box->isTip() && !box->isDead())
		{
			return box;
		}
	}
	return NULL;
}

void LLNotifyBoxView::showOnly(LLView * view)
{
	if(view) 
	{
		// assumes that the argument is actually a child
		LLNotifyBox * shown = dynamic_cast<LLNotifyBox*>(view);
		if(!shown)
		{
			return ;
		}

		// make every other notification invisible
		for(child_list_const_iter_t iter = getChildList()->begin();
			iter != getChildList()->end();
			iter++)
		{
			if(isGroupNotifyBox(*iter))
			{
				continue;
			}

			LLNotifyBox * box = (LLNotifyBox*)(*iter);
			if(box != view && box->getVisible() && !box->isTip())
			{
				box->setVisible(FALSE);
			}
		}
		shown->setVisible(TRUE);
		sendChildToFront(shown);
	}
}

void LLNotifyBoxView::purgeMessagesMatching(const Matcher& matcher)
{
	// Make a *copy* of the child list to iterate over 
	// since we'll be removing items from the real list as we go.
	LLView::child_list_t notification_queue(*getChildList());
	for(LLView::child_list_iter_t iter = notification_queue.begin();
		iter != notification_queue.end();
		iter++)
	{
		if(isGroupNotifyBox(*iter))
		{
			continue;
		}

		LLNotifyBox* notification = (LLNotifyBox*)*iter;
		if(matcher.matches(notification->getNotification()))
		{
			removeChild(notification);
		}
	}
}

bool LLNotifyBoxView::isGroupNotifyBox(const LLView* view) const
{
	if (view->getName() == "groupnotify")
	{
		return TRUE ;
	}

	return FALSE ;
}