/** 
 * @file fsfloaterim.cpp
 * @brief FSFloaterIM class definition
 *
 * $LicenseInfo:firstyear=2009&license=viewerlgpl$
 * 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
 * http://www.firestormviewer.org
 * $/LicenseInfo$
 */

// Original file: llimfloater.cpp

#include "llviewerprecompiledheaders.h"

#include "fsfloaterim.h"

#include "fschathistory.h"
#include "fschatoptionsmenu.h"
#include "fscommon.h"
#include "fsdata.h"
#include "fsfloaterimcontainer.h" // to replace separate IM Floaters with multifloater container
#include "fsfloaternearbychat.h"
#include "fsnearbychathub.h"	// <FS:Zi> FIRE-24133 - Redirect chat channel messages
#include "fspanelimcontrolpanel.h"
#include "llagent.h"
#include "llappviewer.h"
#include "llautoreplace.h"
#include "llavataractions.h"
#include "llavatarnamecache.h"
#include "llbutton.h"
#include "llchannelmanager.h"
#include "llchatentry.h"
#include "llcheckboxctrl.h"
#include "llchiclet.h"
#include "llchicletbar.h"
#include "llconsole.h"
#include "llfloaterabout.h"		// for sysinfo button -Zi
#include "llfloateravatarpicker.h"
#include "llfloateremojipicker.h"
#include "llfloaterreg.h"
#include "llfloatersearchreplace.h"
#include "llgroupactions.h"
#include "llinventoryfunctions.h"
#include "llinventorymodel.h"
#include "lllayoutstack.h"
#include "lllogchat.h"
#include "llnotifications.h"
#include "llnotificationsutil.h"
#include "llnotificationtemplate.h"		// <FS:Zi> Viewer version popup
#include "llpanelemojicomplete.h"
#include "llrootview.h"
#include "llscreenchannel.h"
#include "llspeakers.h"
#include "llsyswellwindow.h"
#include "lltextbox.h"
#include "lltrans.h"
#include "lltransientfloatermgr.h"
#include "llversioninfo.h"
#include "llviewerchat.h"
#include "llviewerregion.h"
#include "llviewerwindow.h"
#include "llvoicechannel.h"
#include "rlvactions.h"
#include "rlvhandler.h"

#include <boost/regex.hpp>	// <FS:Zi> FIRE-24133 - Redirect chat channel messages

constexpr F32 ME_TYPING_TIMEOUT = 4.0f;
constexpr F32 OTHER_TYPING_TIMEOUT = 9.0f;
constexpr F32 NAME_REFRESH_TIMEOUT = 300.0f;

floater_showed_signal_t FSFloaterIM::sIMFloaterShowedSignal;

FSFloaterIMTimer::FSFloaterIMTimer(FSFloaterIMTimer::callback_t callback) :
	LLEventTimer(0.1f),
	mCallback(callback)
{ }

BOOL FSFloaterIMTimer::tick()
{
	if (!mCallback.empty())
	{
		mCallback();
	}

	return FALSE;
}


FSFloaterIM::FSFloaterIM(const LLUUID& session_id)
  : LLTransientDockableFloater(NULL, true, session_id),
  LLEventTimer(0.1f),
	mControlPanel(NULL),
	mSessionID(session_id),
	mLastMessageIndex(-1),
	mPendingMessages(0),
	mDialog(IM_NOTHING_SPECIAL),
	mChatHistory(NULL),
	mInputEditor(NULL),
	mSavedTitle(),
	mTypingStart(),
	mShouldSendTypingState(false),
	mMeTyping(false),
	mOtherTyping(false),
	mTypingTimer(),
	mTypingTimeoutTimer(),
	mSessionInitialized(false),
	mChatLayoutPanel(NULL),
	mInputPanels(NULL),
	mChatLayoutPanelHeight(0),
	mAvatarNameCacheConnection(),
	mVoiceChannel(NULL),
	mMeTypingTimer(),
	mOtherTypingTimer(),
	mRefreshNameTimer(),
	mUnreadMessagesNotificationPanel(NULL),
	mUnreadMessagesNotificationTextBox(NULL),
	mApplyRect(true),
	mIMFloaterTimer(NULL)
{
	initIMSession(session_id);
	
	switch (mDialog)
	{
		case IM_NOTHING_SPECIAL:
		case IM_SESSION_P2P_INVITE:
			mFactoryMap["panel_im_control_panel"] = LLCallbackMap(createPanelIMControl, this);
			break;
		case IM_SESSION_CONFERENCE_START:
			mFactoryMap["panel_im_control_panel"] = LLCallbackMap(createPanelAdHocControl, this);
			break;
		case IM_SESSION_GROUP_START:
			setCanSnooze(TRUE);
			mFactoryMap["panel_im_control_panel"] = LLCallbackMap(createPanelGroupControl, this);
			break;
		case IM_SESSION_INVITE:
			if (gAgent.isInGroup(mSessionID))
			{
				setCanSnooze(TRUE);
				mFactoryMap["panel_im_control_panel"] = LLCallbackMap(createPanelGroupControl, this);
			}
			else
			{
				mFactoryMap["panel_im_control_panel"] = LLCallbackMap(createPanelAdHocControl, this);
			}
			break;
		default: break;
	}

	mCommitCallbackRegistrar.add("IMSession.Menu.Action", boost::bind(&FSFloaterIM::doToSelected, this, _2));
	mEnableCallbackRegistrar.add("IMSession.Menu.Enable", boost::bind(&FSFloaterIM::checkEnabled, this, _2));

	mEnableCallbackRegistrar.add("ChatOptions.Check", boost::bind(&FSFloaterIM::onChatOptionsCheckContextMenuItem, this, _2));
	mCommitCallbackRegistrar.add("ChatOptions.Action", boost::bind(&FSFloaterIM::onChatOptionsContextMenuItemClicked, this, _2));
	mEnableCallbackRegistrar.add("ChatOptions.Visible", boost::bind(&FSFloaterIM::onChatOptionsVisibleContextMenuItem, this, _2));
	mEnableCallbackRegistrar.add("ChatOptions.Enable", boost::bind(&FSFloaterIM::onChatOptionsEnableContextMenuItem, this, _2));

	setOverlapsScreenChannel(true);

	LLTransientFloaterMgr::getInstance()->addControlView(LLTransientFloaterMgr::IM, this);

	// only dock when chiclets are visible, or the floater will get stuck in the top left
	// FIRE-9984 -Zi
	bool disable_chiclets = gSavedSettings.getBOOL("FSDisableIMChiclets");
	setDocked(!disable_chiclets);
	// make sure to save position and size with chiclets disabled (torn off floater does that)
	setTornOff(disable_chiclets);

	mRefreshNameTimer.setTimerExpirySec(NAME_REFRESH_TIMEOUT);

	mIMFloaterTimer = new FSFloaterIMTimer(boost::bind(&FSFloaterIM::timedUpdate, this));
}

// virtual
BOOL FSFloaterIM::focusFirstItem(BOOL prefer_text_fields, BOOL focus_flash)
{
	mInputEditor->setFocus(TRUE);
	onTabInto();
	if (focus_flash)
	{
		gFocusMgr.triggerFocusFlash();
	}
	return TRUE;
}

void FSFloaterIM::onFocusLost()
{
	LLIMModel::getInstance()->resetActiveSessionID();

	LLChicletBar::getInstance()->getChicletPanel()->setChicletToggleState(mSessionID, false);
}

void FSFloaterIM::onFocusReceived()
{
	LLIMModel::getInstance()->setActiveSessionID(mSessionID);

	LLChicletBar::getInstance()->getChicletPanel()->setChicletToggleState(mSessionID, true);

	if (getVisible())
	{
		LLIMModel::instance().sendNoUnreadMessages(mSessionID);
	}
}

// virtual
void FSFloaterIM::onClose(bool app_quitting)
{
	mEventTimer.stop();

	setTyping(false);

	// The source of much argument and design thrashing
	// Should the window hide or the session close when the X is clicked?
	//
	// Last change:
	// EXT-3516 X Button should end IM session, _ button should hide


	// AO: Make sure observers are removed on close
	mVoiceChannelStateChangeConnection.disconnect();
	if(LLVoiceClient::instanceExists())
	{
		LLVoiceClient::getInstance()->removeObserver((LLVoiceClientStatusObserver*)this);
	}
	
	//<FS:ND> FIRE-6077 et al: Always clean up observers when the floater dies
	LLAvatarTracker::instance().removeParticularFriendObserver(mOtherParticipantUUID, this);
	//</FS:ND> FIRE-6077 et al
	
	gIMMgr->leaveSession(mSessionID);
}

void FSFloaterIM::onSnooze()
{
	LLIMModel::LLIMSession* session = LLIMModel::instance().findIMSession(mSessionID);

	if (!session)
	{
		LL_WARNS("FSFloaterIM") << "Empty session." << LL_ENDL;
		return;
	}

	bool is_call_with_chat = session->isGroupSessionType()
			|| session->isAdHocSessionType() || session->isP2PSessionType();

	LLVoiceChannel* voice_channel = LLIMModel::getInstance()->getVoiceChannel(mSessionID);

	if (is_call_with_chat && voice_channel && voice_channel->isActive())
	{
		LLSD payload;
		payload["session_id"] = mSessionID;
		payload["snooze"] = true;
		LLNotificationsUtil::add("ConfirmLeaveCall", LLSD(), payload, confirmLeaveCallCallback);
		return;
	}

	confirmSnooze();
}

void FSFloaterIM::confirmSnooze()
{
	if (gSavedSettings.getBOOL("FSEnablePerGroupSnoozeDuration"))
	{
		LLSD args;
		args["DURATION"] = gSavedSettings.getS32("GroupSnoozeTime");

		LLNotificationsUtil::add("SnoozeDuration", args, LLSD(), boost::bind(&FSFloaterIM::snoozeDurationCallback, this, _1, _2));
		return;
	}

	snooze();
}

void FSFloaterIM::snoozeDurationCallback(const LLSD& notification, const LLSD& response)
{
	if (S32 option = LLNotificationsUtil::getSelectedOption(notification, response); 0 == option)
	{
		std::istringstream duration_str(response["duration"].asString());
		S32 duration(-1);
		if (duration_str >> duration && duration >= 0)
		{
			snooze(duration);
		}
		else
		{
			LLNotificationsUtil::add("SnoozeDurationInvalidInput");
		}
	}
}

void FSFloaterIM::snooze(S32 duration /*= -1*/)
{
	LLIMModel::LLIMSession* session = LLIMModel::instance().findIMSession(mSessionID);

	if (!session)
	{
		LL_WARNS("FSFloaterIM") << "Empty session." << LL_ENDL;
		return;
	}

	session->mSnoozeTime = duration;
	session->mCloseAction = LLIMModel::LLIMSession::CLOSE_SNOOZE;

	LLFloater::onClickCloseBtn();
}

/* static */
void FSFloaterIM::newIMCallback(const LLSD& data){
	
	if (data["num_unread"].asInteger() > 0 || data["from_id"].asUUID().isNull())
	{
		LLUUID session_id = data["session_id"].asUUID();

		FSFloaterIM* floater = LLFloaterReg::findTypedInstance<FSFloaterIM>("fs_impanel", session_id);
		if (!floater)
			return;

		// update if visible or max pending messages exceeded, otherwise will be updated when opened
		static LLCachedControl<S32> fsMaxPendingIMMessages(gSavedSettings, "FSMaxPendingIMMessages");
		floater->mPendingMessages++;
		if (floater->getVisible() || floater->mPendingMessages > fsMaxPendingIMMessages)
		{
			floater->updateMessages();
		}
	}
}

void FSFloaterIM::onVisibilityChange(BOOL new_visibility)
{
	LLVoiceChannel* voice_channel = LLIMModel::getInstance()->getVoiceChannel(mSessionID);

	if (new_visibility && voice_channel &&
		voice_channel->getState() == LLVoiceChannel::STATE_CONNECTED)
	{
		LLFloaterReg::showInstance("voice_call", mSessionID);
	}
	else
	{
		LLFloaterReg::hideInstance("voice_call", mSessionID);
	}
}

void FSFloaterIM::sendMsgFromInputEditor(EChatType type)
{
	if (gAgent.isGodlike()
		|| (mDialog != IM_NOTHING_SPECIAL)
		|| !mOtherParticipantUUID.isNull())
	{
		// <FS:Techwolf Lupindo> fsdata support
		if (mDialog == IM_NOTHING_SPECIAL && FSData::instance().isSupport(mOtherParticipantUUID) && FSData::instance().isAgentFlag(gAgentID, FSData::NO_SUPPORT))
		{
			return;
		}
		// </FS:Techwolf Lupindo>
		
		if (mInputEditor)
		{
			LLWString text = mInputEditor->getWText();
			LLWStringUtil::trim(text);
			LLWStringUtil::replaceChar(text,182,'\n'); // Convert paragraph symbols back into newlines.
			if (!text.empty())
			{
				FSCommon::updateUsedEmojis(text);

				if (type == CHAT_TYPE_OOC)
				{
					std::string tempText = wstring_to_utf8str( text );
					tempText = gSavedSettings.getString("FSOOCPrefix") + " " + tempText + " " + gSavedSettings.getString("FSOOCPostfix");
					text = utf8str_to_wstring(tempText);
				}

				// Truncate and convert to UTF8 for transport
				std::string utf8_text = wstring_to_utf8str(text);

				// <FS:Zi> FIRE-24133 - Redirect chat channel messages
				if (boost::regex_match(utf8_text.c_str(), boost::regex("/-{0,1}[0-9].*")))
				{
					// message starts with a / and a valid channel number, so redirect it to a chat channel
					FSNearbyChat::instance().sendChatFromViewer(text, CHAT_TYPE_NORMAL, false);

					// clean out the text box and typing indicator, which we wouldn't reach otherwise
					mInputEditor->setText(LLStringUtil::null);
					setTyping(false);

					return;
				}

				// Convert OOC and MU* style poses
				utf8_text = FSCommon::applyAutoCloseOoc(utf8_text);
				utf8_text = FSCommon::applyMuPose(utf8_text);
				
				// <FS:Techwolf Lupindo> Support group chat prefix
				static LLCachedControl<bool> chat_prefix_support(gSavedSettings, "FSSupportGroupChatPrefix3");
				static LLCachedControl<bool> chat_prefix_testing(gSavedSettings, "FSSupportGroupChatPrefixTesting");
				if ((chat_prefix_support || chat_prefix_testing) && FSData::getInstance()->isFirestormGroup(mSessionID))
				{
					// <FS:PP> FIRE-7075: Skin indicator
					static LLCachedControl<std::string> FSInternalSkinCurrent(gSavedSettings, "FSInternalSkinCurrent");
					std::string skin_indicator(FSInternalSkinCurrent);
					LLStringUtil::toLower(skin_indicator);
					if (skin_indicator == "starlight cui")
					{
						skin_indicator = "sc"; // Separate "s" (StarLight) from "sc" (StarLight CUI)
					}
					else
					{
						skin_indicator = skin_indicator.substr(0, 1); // "FS 4.4.1f os", "FS 4.4.1v", "FS 4.4.1a", "FS 4.4.1s os", "FS 4.4.1m os" etc.
					}
					// </FS:PP>

					//Address size check
#if ADDRESS_SIZE == 32
					std::string str_address_size_tag = "32";
#else
					std::string str_address_size_tag = "";
#endif

					//OpenSim check
					std::string str_opensim_tag;
#ifdef OPENSIM
					str_opensim_tag = " os";
#endif

					//Operating System check
#if LL_WINDOWS
					std::string str_operating_system_tag = "W";
#elif LL_LINUX
					std::string str_operating_system_tag = "L";
#elif LL_DARWIN
					std::string str_operating_system_tag = "M";
#endif

					//RLV check
					std::string str_rlv_enabled = "";
					if (RlvHandler::isEnabled())
						str_rlv_enabled = "*";

					// Text mode check
					std::string str_viewer_mode = "";

					// Unfortunately, we have to cheat a little here. Ideally we'd have
					// a method defined to check if the viewer is running in Text Mode.
					// For now, we will use the same method as used in llappviewer.cpp(LLAppViewer::getViewerInfo())
					static LLCachedControl<std::string> FSViewerMode(gSavedSettings, "SessionSettingsFile");
					std::string viewer_mode(FSViewerMode);
					LLStringUtil::toLower(viewer_mode);
					if (viewer_mode == "settings_text.xml")
						str_viewer_mode = "T";

					//Build it up
					size_t insert_pos = is_irc_me_prefix(utf8_text) ? 4 : 0;

					//For testing/beta groups, we display the build version since it doesn't speed by and this might change often
					if (FSData::getInstance()->isTestingGroup(mSessionID))
					{
						if(chat_prefix_testing)
							utf8_text.insert(insert_pos, ("(" + str_address_size_tag + str_operating_system_tag + " " + LLVersionInfo::getInstance()->getBuildVersion() + skin_indicator + str_viewer_mode + str_rlv_enabled + str_opensim_tag + ") "));
					}
					//For release support groups, only display the short version(Major.Minor.Patch) since chat can speed by. This makes it easier on Support's eyes.
					else if(FSData::getInstance()->isSupportGroup(mSessionID))
					{
						if(chat_prefix_support)
							utf8_text.insert(insert_pos, ("(" + str_address_size_tag + str_operating_system_tag + " " + LLVersionInfo::getInstance()->getShortVersion() + skin_indicator + str_viewer_mode + str_rlv_enabled + str_opensim_tag + ") "));
					}
				}

				// <FS:Techwolf Lupindo> Allow user to send system info.
				if (mDialog == IM_NOTHING_SPECIAL && utf8_text.find("/sysinfo") == 0)
				{
					LLSD system_info = FSData::getSystemInfo();
					utf8_text = system_info["Part1"].asString() + system_info["Part2"].asString();
				}
				// </FS:Techwolf Lupindo>

				sendMsg(utf8_text);

				mInputEditor->setText(LLStringUtil::null);
			}
		}
	}
	else
	{
		LL_INFOS("FSFloaterIM") << "Cannot send IM to everyone unless you're a god." << LL_ENDL;
	}

	setTyping(false);
}

void FSFloaterIM::onChatSearchButtonClicked()
{
	LLFloaterSearchReplace::show(mChatHistory);
}

void FSFloaterIM::sendMsg(const std::string& msg)
{
	//	const std::string utf8_text = utf8str_truncate(msg, MAX_MSG_BUF_SIZE - 1);
	// [RLVa:KB] - Checked: 2010-11-30 (RLVa-1.3.0)
	// <FS:CR> Don't truncate our messages, they're broken up as part of FIRE-787
	//std::string utf8_text = utf8str_truncate(msg, MAX_MSG_BUF_SIZE - 1);
	std::string utf8_text = msg;
	// </FS:CR>

	if ( (RlvActions::hasBehaviour(RLV_BHVR_SENDIM)) || (RlvActions::hasBehaviour(RLV_BHVR_SENDIMTO)) )
	{
		const LLIMModel::LLIMSession* pIMSession = LLIMModel::instance().findIMSession(mSessionID);
		RLV_ASSERT(pIMSession);

		bool fRlvFilter = !pIMSession;
		if (pIMSession)
		{
			switch (pIMSession->mSessionType)
			{
				case LLIMModel::LLIMSession::P2P_SESSION:	// One-on-one IM
					fRlvFilter = !RlvActions::canSendIM(mOtherParticipantUUID);
					break;
				case LLIMModel::LLIMSession::GROUP_SESSION:	// Group chat
					fRlvFilter = !RlvActions::canSendIM(mSessionID);
					break;
				case LLIMModel::LLIMSession::ADHOC_SESSION:	// Conference chat: allow if all participants can be sent an IM
				{
					if (!pIMSession->mSpeakers)
					{
						fRlvFilter = true;
						break;
					}

					LLSpeakerMgr::speaker_list_t speakers;
					pIMSession->mSpeakers->getSpeakerList(&speakers, TRUE);
					for (const auto& pSpeaker : speakers)
					{
						if ( (gAgent.getID() != pSpeaker->mID) && (!RlvActions::canSendIM(pSpeaker->mID)) )
						{
							fRlvFilter = true;
							break;
						}
					}
				}
					break;
				default:
					fRlvFilter = true;
					break;
			}
		}

		if (fRlvFilter)
		{
			utf8_text = RlvStrings::getString(RlvStringKeys::Blocked::SendIm);
		}
	}
	// [/RLVa:KB]

	if (mSessionInitialized)
	{
		LLIMModel::sendMessage(utf8_text, mSessionID, mOtherParticipantUUID, mDialog);
	}
	else
	{
		//queue up the message to send once the session is initialized
		mQueuedMsgsForInit.append(utf8_text);
	}

	updateMessages();
}

FSFloaterIM::~FSFloaterIM()
{
	delete mIMFloaterTimer;

	mEventTimer.stop();

	LLTransientFloaterMgr::getInstance()->removeControlView(LLTransientFloaterMgr::IM, (LLView*)this);
	mVoiceChannelStateChangeConnection.disconnect();
	if (LLVoiceClient::instanceExists())
	{
		LLVoiceClient::getInstance()->removeObserver((LLVoiceClientStatusObserver*)this);
	}

	LLIMModel::LLIMSession* pIMSession = LLIMModel::instance().findIMSession(mSessionID);
	if ((pIMSession) && (pIMSession->mSessionType == LLIMModel::LLIMSession::P2P_SESSION))
	{
		LLAvatarTracker::instance().removeParticularFriendObserver(mOtherParticipantUUID, this);
	}

	// Clean up any stray name cache connections
	if (mAvatarNameCacheConnection.connected())
	{
		mAvatarNameCacheConnection.disconnect();
	}

	if (mRecentEmojisUpdatedCallbackConnection.connected())
	{
		mRecentEmojisUpdatedCallbackConnection.disconnect();
	}
}

void FSFloaterIM::onVoiceChannelStateChanged(const LLVoiceChannel::EState& old_state, const LLVoiceChannel::EState& new_state)
{
	LL_DEBUGS("FSFloaterIM") << "FSFloaterIM::onVoiceChannelStateChanged" << LL_ENDL;
	updateButtons(new_state >= LLVoiceChannel::STATE_CALL_STARTED);
}

void FSFloaterIM::doToSelected(const LLSD& userdata)
{
	const std::string command = userdata.asString();

	if (command == "offer_tp")
	{
		LLAvatarActions::offerTeleport(mOtherParticipantUUID);
	}
	else if (command == "request_tp")
	{
		LLAvatarActions::teleportRequest(mOtherParticipantUUID);
	}
	else if (command == "share")
	{
		LLAvatarActions::share(mOtherParticipantUUID);
	}
	else if (command == "add_participant")
	{
		onAddButtonClicked();
	}
	else if (command == "pay")
	{
		LLAvatarActions::pay(mOtherParticipantUUID);
	}
	else if (command == "show_profile")
	{
		LLAvatarActions::showProfile(mOtherParticipantUUID);
	}
	else if (command == "group_info")
	{
		LLGroupActions::show(mSessionID);
	}
	else if (command == "call")
	{
		gIMMgr->startCall(mSessionID);
	}
	else if (command == "end_call")
	{
		gIMMgr->endCall(mSessionID);
	}
	else if (command == "volume")
	{
		LLFloaterReg::showInstance("fs_voice_controls");
	}
	else if (command == "add_friend")
	{
		LLAvatarActions::requestFriendshipDialog(mOtherParticipantUUID);
	}
	else if (command == "history")
	{
		if (gSavedSettings.getBOOL("FSUseBuiltInHistory"))
		{
			LLFloaterReg::showInstance("preview_conversation", mSessionID, TRUE);
		}
		else
		{
			gViewerWindow->getWindow()->openFile(LLLogChat::makeLogFileName(LLIMModel::instance().getHistoryFileName(mSessionID)));
		}
	}
	else
	{
		LL_WARNS("FSFloaterIM") << "Unhandled command '" << command << "'. Ignoring." << LL_ENDL;
	}
}

bool FSFloaterIM::checkEnabled(const LLSD& userdata)
{
	const std::string command = userdata.asString();

	if (command == "enable_offer_tp")
	{
		return LLAvatarActions::canOfferTeleport(mOtherParticipantUUID);
	}
	return false;
}

void FSFloaterIM::onChatOptionsContextMenuItemClicked(const LLSD& userdata)
{
	FSChatOptionsMenu::onMenuItemClick(userdata, this);
}

bool FSFloaterIM::onChatOptionsCheckContextMenuItem(const LLSD& userdata)
{
	return FSChatOptionsMenu::onMenuItemCheck(userdata, this);
}

bool FSFloaterIM::onChatOptionsVisibleContextMenuItem(const LLSD& userdata)
{
	return FSChatOptionsMenu::onMenuItemVisible(userdata, this);
}

bool FSFloaterIM::onChatOptionsEnableContextMenuItem(const LLSD& userdata)
{
	return FSChatOptionsMenu::onMenuItemEnable(userdata, this);
}

// support sysinfo button -Zi
void FSFloaterIM::onSysinfoButtonClicked()
{
	LLSD system_info = FSData::getSystemInfo();
	LLSD args;
	args["SYSINFO"] = system_info["Part1"].asString() + system_info["Part2"].asString();
	args["Part1"] = system_info["Part1"];
	args["Part2"] = system_info["Part2"];
	LLNotificationsUtil::add("SendSysinfoToIM",args,LLSD(),boost::bind(&FSFloaterIM::onSendSysinfo,this,_1,_2));
}

BOOL FSFloaterIM::onSendSysinfo(const LLSD& notification, const LLSD& response)
{
	S32 option = LLNotificationsUtil::getSelectedOption(notification,response);

	if (option == 0)
	{
		std::string part1 = notification["substitutions"]["Part1"];
		std::string part2 = notification["substitutions"]["Part2"];
		if (mSessionInitialized)
		{
			LLIMModel::sendMessage(part1, mSessionID, mOtherParticipantUUID, mDialog);
			LLIMModel::sendMessage(part2, mSessionID, mOtherParticipantUUID, mDialog);
		}
		else
		{
			//queue up the message to send once the session is initialized
			mQueuedMsgsForInit.append(part1);
			mQueuedMsgsForInit.append(part2);
		}
		return TRUE;
	}
	return FALSE;
}

void FSFloaterIM::onSysinfoButtonVisibilityChanged(const LLSD& yes)
{
	getChild<LLUICtrl>("send_sysinfo_btn_panel")->setVisible(yes.asBoolean() /* && mIsSupportIM */);
}
// support sysinfo button -Zi

void FSFloaterIM::onChange(EStatusType status, const LLSD& channelInfo, bool proximal)
{
	if(status == STATUS_JOINING || status == STATUS_LEFT_CHANNEL)
	{
		return;
	}

	updateCallButton();
}

void FSFloaterIM::updateCallButton()
{
	// hide/show call button
	bool voice_enabled = LLVoiceClient::getInstance()->voiceEnabled() && LLVoiceClient::getInstance()->isVoiceWorking();
	LLIMModel::LLIMSession* session = LLIMModel::instance().findIMSession(mSessionID);

	if (!session)
	{
		getChild<LLButton>("call_btn")->setEnabled(FALSE);
		return;
	}

	bool session_initialized = session->mSessionInitialized;
	bool callback_enabled = session->mCallBackEnabled;

	BOOL enable_connect = session_initialized
	&& voice_enabled
	&& callback_enabled;

	getChild<LLButton>("call_btn")->setEnabled(enable_connect);
}

void FSFloaterIM::updateButtons(bool is_call_started)
{
	LL_DEBUGS("FSFloaterIM") << "FSFloaterIM::updateButtons" << LL_ENDL;
	getChildView("end_call_btn_panel")->setVisible( is_call_started);
	getChildView("voice_ctrls_btn_panel")->setVisible( is_call_started);
	getChildView("call_btn_panel")->setVisible( ! is_call_started);
	updateCallButton();
}

void FSFloaterIM::changed(U32 mask)
{
	LL_DEBUGS("FSFloaterIM") << "FSFloaterIM::changed(U32 mask)" << LL_ENDL;

	if(LLAvatarActions::isFriend(mOtherParticipantUUID))
	{
		bool is_online = LLAvatarTracker::instance().isBuddyOnline(mOtherParticipantUUID);
		getChild<LLButton>("teleport_btn")->setEnabled(is_online);
		getChild<LLButton>("call_btn")->setEnabled(is_online);
		getChild<LLButton>("add_friend_btn")->setEnabled(FALSE);
	}
	else
	{
		// If friendship dissolved, enable buttons by default because we don't
		// know about their online status anymore
		getChild<LLButton>("teleport_btn")->setEnabled(TRUE);
		getChild<LLButton>("call_btn")->setEnabled(TRUE);
		getChild<LLButton>("add_friend_btn")->setEnabled(TRUE);
	}
}

// </AO> Callbacks for llimcontrol panel, merged into this floater

//virtual
BOOL FSFloaterIM::postBuild()
{
	const LLUUID& other_party_id = LLIMModel::getInstance()->getOtherParticipantID(mSessionID);
	if (other_party_id.notNull())
	{
		mOtherParticipantUUID = other_party_id;
	}

	mControlPanel->setSessionId(mSessionID);
	
	// AO: always hide the control panel to start.
	LL_DEBUGS("FSFloaterIM") << "mControlPanel->getParent()" << mControlPanel->getParent() << LL_ENDL;
	mControlPanel->getParent()->setVisible(FALSE);

	LL_DEBUGS("FSFloaterIM") << "buttons setup in IM start" << LL_ENDL;

	LLButton* button = getChild<LLButton>("slide_left_btn");
	button->setVisible(mControlPanel->getParent()->getVisible());
	button->setClickedCallback(boost::bind(&FSFloaterIM::onSlide, this));

	button = getChild<LLButton>("slide_right_btn");
	button->setVisible(!mControlPanel->getParent()->getVisible());
	button->setClickedCallback(boost::bind(&FSFloaterIM::onSlide, this));

	// support sysinfo button -Zi
	mSysinfoButton = getChild<LLButton>("send_sysinfo_btn");
	onSysinfoButtonVisibilityChanged(FALSE);

	// type-specfic controls
	LLIMModel::LLIMSession* pIMSession = LLIMModel::instance().findIMSession(mSessionID);
	if (pIMSession)
	{
		switch (pIMSession->mSessionType)
		{
			case LLIMModel::LLIMSession::P2P_SESSION:	// One-on-one IM
			{
				LL_DEBUGS("FSFloaterIM") << "LLIMModel::LLIMSession::P2P_SESSION" << LL_ENDL;
				getChild<LLLayoutPanel>("slide_panel")->setVisible(FALSE);
				getChild<LLLayoutPanel>("gprofile_panel")->setVisible(FALSE);
				getChild<LLLayoutPanel>("end_call_btn_panel")->setVisible(FALSE);
				getChild<LLLayoutPanel>("voice_ctrls_btn_panel")->setVisible(FALSE);
				
				LL_DEBUGS("FSFloaterIM") << "adding FSFloaterIM removing/adding particularfriendobserver" << LL_ENDL;
				LLAvatarTracker::instance().removeParticularFriendObserver(mOtherParticipantUUID, this);
				LLAvatarTracker::instance().addParticularFriendObserver(mOtherParticipantUUID, this);

				// Disable "Add friend" button for friends.
				LL_DEBUGS("FSFloaterIM") << "add_friend_btn check start" << LL_ENDL;
				getChild<LLButton>("add_friend_btn")->setEnabled(!LLAvatarActions::isFriend(mOtherParticipantUUID));

				// Disable "Teleport" button if friend is offline
				if(LLAvatarActions::isFriend(mOtherParticipantUUID))
				{
					LL_DEBUGS("FSFloaterIM") << "LLAvatarActions::isFriend - tp button" << LL_ENDL;
					getChild<LLButton>("teleport_btn")->setEnabled(LLAvatarTracker::instance().isBuddyOnline(mOtherParticipantUUID));
				}

				// support sysinfo button -Zi
				mSysinfoButton->setClickedCallback(boost::bind(&FSFloaterIM::onSysinfoButtonClicked, this));
				// this needs to be extended to fsdata awareness, once we have it. -Zi
				// mIsSupportIM=fsdata(partnerUUID).isSupport(); // pseudocode something like this
				onSysinfoButtonVisibilityChanged(gSavedSettings.getBOOL("SysinfoButtonInIM"));
				gSavedSettings.getControl("SysinfoButtonInIM")->getCommitSignal()->connect(boost::bind(&FSFloaterIM::onSysinfoButtonVisibilityChanged, this, _2));
				// support sysinfo button -Zi

				break;
			}
			case LLIMModel::LLIMSession::GROUP_SESSION:	// Group chat
			{
				LL_DEBUGS("FSFloaterIM") << "LLIMModel::LLIMSession::GROUP_SESSION start" << LL_ENDL;
				getChild<LLLayoutPanel>("profile_panel")->setVisible(FALSE);
				getChild<LLLayoutPanel>("friend_panel")->setVisible(FALSE);
				getChild<LLLayoutPanel>("tp_panel")->setVisible(FALSE);
				getChild<LLLayoutPanel>("share_panel")->setVisible(FALSE);
				getChild<LLLayoutPanel>("pay_panel")->setVisible(FALSE);
				getChild<LLLayoutPanel>("end_call_btn_panel")->setVisible(FALSE);
				getChild<LLLayoutPanel>("voice_ctrls_btn_panel")->setVisible(FALSE);
				getChild<LLLayoutPanel>("add_participant_panel")->setVisible(FALSE);
				
				LL_DEBUGS("FSFloaterIM") << "LLIMModel::LLIMSession::GROUP_SESSION end" << LL_ENDL;
				break;
			}
			case LLIMModel::LLIMSession::ADHOC_SESSION:	// Conference chat
			{
				LL_DEBUGS("FSFloaterIM") << "LLIMModel::LLIMSession::ADHOC_SESSION  start" << LL_ENDL;
				getChild<LLLayoutPanel>("profile_panel")->setVisible(FALSE);
				getChild<LLLayoutPanel>("gprofile_panel")->setVisible(FALSE);
				getChild<LLLayoutPanel>("friend_panel")->setVisible(FALSE);
				getChild<LLLayoutPanel>("tp_panel")->setVisible(FALSE);
				getChild<LLLayoutPanel>("share_panel")->setVisible(FALSE);
				getChild<LLLayoutPanel>("pay_panel")->setVisible(FALSE);
				getChild<LLLayoutPanel>("end_call_btn_panel")->setVisible(FALSE);
				getChild<LLLayoutPanel>("voice_ctrls_btn_panel")->setVisible(FALSE);
				LL_DEBUGS("FSFloaterIM") << "LLIMModel::LLIMSession::ADHOC_SESSION end" << LL_ENDL;
				break;
			}
			default:
				LL_DEBUGS("FSFloaterIM") << "default buttons start" << LL_ENDL;
				getChild<LLLayoutPanel>("end_call_btn_panel")->setVisible(FALSE);
				getChild<LLLayoutPanel>("voice_ctrls_btn_panel")->setVisible(FALSE);
				LL_DEBUGS("FSFloaterIM") << "default buttons end" << LL_ENDL;
				break;
		}
	}
	mVoiceChannel = LLIMModel::getInstance()->getVoiceChannel(mSessionID);
	if(mVoiceChannel)
	{
		LL_DEBUGS("FSFloaterIM") << "voice_channel start" << LL_ENDL;
		mVoiceChannelStateChangeConnection = mVoiceChannel->setStateChangedCallback(boost::bind(&FSFloaterIM::onVoiceChannelStateChanged, this, _1, _2));
		
		//call (either p2p, group or ad-hoc) can be already in started state
		updateButtons(mVoiceChannel->getState() >= LLVoiceChannel::STATE_CALL_STARTED);
		LL_DEBUGS("FSFloaterIM") << "voice_channel end" << LL_ENDL;
	}
	LLVoiceClient::getInstance()->addObserver((LLVoiceClientStatusObserver*)this);
	
	// </AO>

	mInputEditor = getChild<LLChatEntry>("chat_editor");
	mChatHistory = getChild<FSChatHistory>("chat_history");
	mChatLayoutPanel = getChild<LLLayoutPanel>("chat_layout_panel");
	mInputPanels = getChild<LLLayoutStack>("input_panels");
	mChatLayoutPanelHeight = mChatLayoutPanel->getRect().getHeight();
	mInputEditorPad = mChatLayoutPanelHeight - mInputEditor->getRect().getHeight();

	mUnreadMessagesNotificationPanel = getChild<LLLayoutPanel>("unread_messages_holder");
	mUnreadMessagesNotificationTextBox = getChild<LLTextBox>("unread_messages_text");
	mChatHistory->setUnreadMessagesUpdateCallback(boost::bind(&FSFloaterIM::updateUnreadMessageNotification, this, _1));

	mInputEditor->setAutoreplaceCallback(boost::bind(&LLAutoReplace::autoreplaceCallback, LLAutoReplace::getInstance(), _1, _2, _3, _4, _5));
	mInputEditor->setFocusReceivedCallback(boost::bind(&FSFloaterIM::onInputEditorFocusReceived, this));
	mInputEditor->setFocusLostCallback(boost::bind(&FSFloaterIM::onInputEditorFocusLost, this));
	mInputEditor->setKeystrokeCallback(boost::bind(&FSFloaterIM::onInputEditorKeystroke, this));
	mInputEditor->setTextExpandedCallback(boost::bind(&FSFloaterIM::reshapeChatLayoutPanel, this));
	mInputEditor->setCommitOnFocusLost(FALSE);
	mInputEditor->setPassDelete(TRUE);
	mInputEditor->setFont(LLViewerChat::getChatFont());
	mInputEditor->enableSingleLineMode(gSavedSettings.getBOOL("FSUseSingleLineChatEntry"));
	mInputEditor->setCommitCallback(boost::bind(&FSFloaterIM::sendMsgFromInputEditor, this, CHAT_TYPE_NORMAL));

	mEmojiRecentPanelToggleBtn = getChild<LLButton>("emoji_recent_panel_toggle_btn");
	mEmojiRecentPanelToggleBtn->setClickedCallback([this](LLUICtrl*, const LLSD&) { onEmojiRecentPanelToggleBtnClicked(); });

	mEmojiRecentPanel = getChild<LLLayoutPanel>("emoji_recent_layout_panel");
	mEmojiRecentPanel->setVisible(false);

	mEmojiRecentEmptyText = getChild<LLTextBox>("emoji_recent_empty_text");
	mEmojiRecentEmptyText->setToolTip(mEmojiRecentEmptyText->getText());
	mEmojiRecentEmptyText->setVisible(false);

	mEmojiRecentIconsCtrl = getChild<LLPanelEmojiComplete>("emoji_recent_icons_ctrl");
	mEmojiRecentIconsCtrl->setCommitCallback([this](LLUICtrl*, const LLSD& value) { onRecentEmojiPicked(value); });
	mEmojiRecentIconsCtrl->setVisible(false);

	static bool usePrettyEmojiButton = gSavedSettings.getBOOL( "FSUsePrettyEmojiButton" );
	static bool useBWEmojis = gSavedSettings.getBOOL( "FSUseBWEmojis" );
	mEmojiPickerToggleBtn = getChild<LLButton>("emoji_picker_toggle_btn");
	if (usePrettyEmojiButton)
	{
		static auto emoji_btn_char = gSavedSettings.getU32("FSPrettyEmojiButtonCode");
		mEmojiPickerToggleBtn->setImageOverlay(LLUUID::null);
		mEmojiPickerToggleBtn->setFont(LLFontGL::getFontEmoji(useBWEmojis));
		mEmojiPickerToggleBtn->setLabel(LLUIString(LLWString(1, emoji_btn_char)));
	}
	else
	{
		mEmojiPickerToggleBtn->setLabel(LLUIString(""));
		mEmojiPickerToggleBtn->setImageOverlay("Emoji_Picker_Icon");
	}
	mEmojiPickerToggleBtn->setClickedCallback([this](LLUICtrl*, const LLSD&) { onEmojiPickerToggleBtnClicked(); });

	mRecentEmojisUpdatedCallbackConnection = LLFloaterEmojiPicker::setRecentEmojisUpdatedCallback([this](const std::list<llwchar>& recent_emojis_list) { initEmojiRecentPanel(); });

	getChild<LLButton>("send_chat")->setCommitCallback(boost::bind(&FSFloaterIM::sendMsgFromInputEditor, this, CHAT_TYPE_NORMAL));
	getChild<LLButton>("chat_search_btn")->setCommitCallback(boost::bind(&FSFloaterIM::onChatSearchButtonClicked, this));

	bool isFSSupportGroup = FSData::getInstance()->isFirestormGroup(mSessionID);
	bool isFSTestingGroup = FSData::getInstance()->isTestingGroup(mSessionID);
	
	//We can show the testing group button simply by checking testing group
	childSetVisible("testing_panel", isFSTestingGroup);
	//But we cannot with the support group button, because testing groups are also support groups
	childSetVisible("support_panel", isFSSupportGroup && !isFSTestingGroup);

	// <FS:Zi> Viewer version popup
	if (isFSSupportGroup || isFSTestingGroup)
	{
		// check if the dialog was set to ignore
		LLNotificationTemplatePtr templatep = LLNotifications::instance().getTemplate("FirstJoinSupportGroup2");
		if (!templatep.get()->mForm->getIgnored())
		{
			// if not, give the user a choice, whether to enable the version prefix or not
			LLSD args;
			LLNotificationsUtil::add("FirstJoinSupportGroup2", args, LLSD(), boost::bind(&FSFloaterIM::enableViewerVersionCallback, this, _1, _2));
		}
	}
	// </FS:Zi> Viewer version popup

	// only dock when chiclets are visible, or the floater will get stuck in the top left
	// FIRE-9984 -Zi
	bool disable_chiclets = gSavedSettings.getBOOL("FSDisableIMChiclets");
	setDocked(!disable_chiclets);

	mTypingStart = LLTrans::getString("IM_typing_start_string");

	// Disable input editor if session cannot accept text
	LLIMModel::LLIMSession* im_session =
		LLIMModel::instance().findIMSession(mSessionID);
	if (im_session && !im_session->mTextIMPossible)
	{
		mInputEditor->setEnabled(FALSE);
		mInputEditor->setLabel(LLTrans::getString("IM_unavailable_text_label"));
	}

	if (im_session && im_session->isP2PSessionType())
	{
		mTypingStart.setArg("[NAME]", im_session->mName);
		updateSessionName(im_session->mName, im_session->mName);
		fetchAvatarName(im_session->mOtherParticipantID);
	}
	else
	{
		std::string session_name(LLIMModel::instance().getName(mSessionID));
		updateSessionName(session_name, session_name);
	}

	//*TODO if session is not initialized yet, add some sort of a warning message like "starting session...blablabla"
	//see LLFloaterIMPanel for how it is done (IB)

	// don't call dockable floater functions when chiclets are disabled, it will dock the floater
	// FIRE-9984 -Zi
	if (isChatMultiTab() || disable_chiclets)
	{
		return LLFloater::postBuild();
	}
	else
	{
		return LLDockableFloater::postBuild();
	}
}

void FSFloaterIM::updateSessionName(const std::string& ui_title,
									const std::string& ui_label)
{
	// <FS:Ansariel> FIRE-7874: Name is missing on tab if announcing incoming IMs is enabled and sender's name is not in name cache
	mSavedTitle = ui_title;

	mInputEditor->setLabel(LLTrans::getString("IM_to_label") + " " + ui_label);
	setTitle(ui_title);
}

void FSFloaterIM::fetchAvatarName(LLUUID& agent_id)
{
	if (agent_id.notNull())
	{
		if (mAvatarNameCacheConnection.connected())
		{
			mAvatarNameCacheConnection.disconnect();
		}
		mAvatarNameCacheConnection = LLAvatarNameCache::get(agent_id,
															boost::bind(&FSFloaterIM::onAvatarNameCache, this, _1, _2));
	}
}

void FSFloaterIM::onAvatarNameCache(const LLUUID& agent_id,
									const LLAvatarName& av_name)
{
	mAvatarNameCacheConnection.disconnect();

	std::string name = av_name.getCompleteName();
	if (LLAvatarName::useDisplayNames())
	{
		switch (gSavedSettings.getS32("FSIMTabNameFormat"))
		{
			// Display name
			case 0:
				name = av_name.getDisplayName();
				break;
			// Username
			case 1:
				name = av_name.getUserNameForDisplay();
				break;
			// Display name (username)
			case 2:
				// Do nothing - we already set the complete name as default
				break;
			// Username (display name)
			case 3:
				if (av_name.isDisplayNameDefault())
				{
					name = av_name.getUserNameForDisplay();
				}
				else
				{
					name = av_name.getUserNameForDisplay() + " (" + av_name.getDisplayName() + ")";
				}
				break;
			default:
				// Do nothing - we already set the complete name as default
				break;
		}
	}

	updateSessionName(name, name);
	mTypingStart.setArg("[NAME]", name);
	if (mOtherTyping)
	{
		setTitle((gSavedSettings.getBOOL("FSTypingChevronPrefix") ? "> " : "") + mTypingStart.getString());
	}
	LL_DEBUGS("FSFloaterIM") << "Setting IM tab name to '" << name << "'" << LL_ENDL;
}

void FSFloaterIM::timedUpdate()
{
	if (mMeTyping)
	{
		// Send an additional Start Typing packet every ME_TYPING_TIMEOUT seconds
		if (mMeTypingTimer.getElapsedTimeF32() > ME_TYPING_TIMEOUT && false == mShouldSendTypingState && mDialog == IM_NOTHING_SPECIAL)
		{
			LL_DEBUGS("TypingMsgs") << "Send additional Start Typing packet" << LL_ENDL;
			LLIMModel::instance().sendTypingState(mSessionID, mOtherParticipantUUID, TRUE);
			mMeTypingTimer.reset();
		}

		// Time out if user hasn't typed for a while.
		if (mTypingTimeoutTimer.getElapsedTimeF32() > LLAgent::TYPING_TIMEOUT_SECS)
		{
			setTyping(false);
			LL_DEBUGS("TypingMsgs") << "Send stop typing due to timeout" << LL_ENDL;
		}
	}

	// Clear <name is typing> message if no data received for OTHER_TYPING_TIMEOUT seconds
	if (mOtherTyping && mOtherTypingTimer.getElapsedTimeF32() > OTHER_TYPING_TIMEOUT)
	{
		LL_DEBUGS("TypingMsgs") << "Received: is typing cleared due to timeout" << LL_ENDL;
		removeTypingIndicator();
		mOtherTyping = false;
	}

	if (mRefreshNameTimer.checkExpirationAndReset(NAME_REFRESH_TIMEOUT))
	{
		LLIMModel::LLIMSession* im_session = LLIMModel::instance().findIMSession(mSessionID);
		if (im_session && im_session->isP2PSessionType())
		{
			fetchAvatarName(im_session->mOtherParticipantID);
		}
	}
}

// static
void* FSFloaterIM::createPanelIMControl(void* userdata)
{
	FSFloaterIM *self = (FSFloaterIM*)userdata;
	self->mControlPanel = new FSPanelIMControlPanel();
	self->mControlPanel->setXMLFilename("panel_fs_im_control_panel.xml");
	return self->mControlPanel;
}


// static
void* FSFloaterIM::createPanelGroupControl(void* userdata)
{
	FSFloaterIM *self = (FSFloaterIM*)userdata;
	self->mControlPanel = new FSPanelGroupControlPanel(self->mSessionID);
	self->mControlPanel->setXMLFilename("panel_fs_group_control_panel.xml");
	return self->mControlPanel;
}

// static
void* FSFloaterIM::createPanelAdHocControl(void* userdata)
{
	FSFloaterIM *self = (FSFloaterIM*)userdata;
	self->mControlPanel = new FSPanelAdHocControlPanel(self->mSessionID);
	self->mControlPanel->setXMLFilename("panel_fs_adhoc_control_panel.xml");
	return self->mControlPanel;
}

void FSFloaterIM::onSlide()
{
	mControlPanel->getParent()->setVisible(!mControlPanel->getParent()->getVisible());

	gSavedSettings.setBOOL("IMShowControlPanel", mControlPanel->getParent()->getVisible());

	getChild<LLButton>("slide_left_btn")->setVisible(mControlPanel->getParent()->getVisible());
	getChild<LLButton>("slide_right_btn")->setVisible(!mControlPanel->getParent()->getVisible());
}

//static
FSFloaterIM* FSFloaterIM::show(const LLUUID& session_id)
{
	closeHiddenIMToasts();

	if (!gIMMgr->hasSession(session_id))
		return nullptr;

	if (!isChatMultiTab())
	{
		//hide all
		LLFloaterReg::const_instance_list_t& inst_list = LLFloaterReg::getFloaterList("fs_impanel");
		for (LLFloaterReg::const_instance_list_t::const_iterator iter = inst_list.begin();
			 iter != inst_list.end(); ++iter)
		{
			FSFloaterIM* floater = dynamic_cast<FSFloaterIM*>(*iter);
			if (floater && floater->isDocked())
			{
				floater->setVisible(false);
			}
		}
	}

	bool exist = findInstance(session_id);

	FSFloaterIM* floater = getInstance(session_id);
	if (!floater)
	{
		return nullptr;
	}

	if (isChatMultiTab())
	{
		FSFloaterIMContainer* floater_container = FSFloaterIMContainer::getInstance();

		// do not add existed floaters to avoid adding torn off instances
		if (!exist)
		{
			//		LLTabContainer::eInsertionPoint i_pt = user_initiated ? LLTabContainer::RIGHT_OF_CURRENT : LLTabContainer::END;
			// TODO: mantipov: use LLTabContainer::RIGHT_OF_CURRENT if it exists
			LLTabContainer::eInsertionPoint i_pt = LLTabContainer::END;
			
			if (floater_container)
			{
				floater_container->addFloater(floater, TRUE, i_pt);
			}
		}

		floater->mApplyRect = false;
		floater->openFloater(floater->getKey());
		floater->mApplyRect = true;
		floater->setFocus(TRUE);
	}
	else
	{
		// Docking may move chat window, hide it before moving, or user will see how window "jumps"
		floater->setVisible(false);

		// only dock when chiclets are visible, or the floater will get stuck in the top left
		// FIRE-9984 -Zi
		if (floater->getDockControl() == NULL && !gSavedSettings.getBOOL("FSDisableIMChiclets"))
		{
			LLChiclet* chiclet =
					LLChicletBar::getInstance()->getChicletPanel()->findChiclet<LLChiclet>(
							session_id);
			if (chiclet == NULL)
			{
				LL_ERRS() << "Dock chiclet for FSFloaterIM doesn't exists" << LL_ENDL;
			}
			else
			{
				LLChicletBar::getInstance()->getChicletPanel()->scrollToChiclet(chiclet);
			}

			// <FS:Ansariel> Group notices, IMs and chiclets position
			//floater->setDockControl(new LLDockControl(chiclet, floater, floater->getDockTongue(),
			//		LLDockControl::BOTTOM));
			if (gSavedSettings.getBOOL("InternalShowGroupNoticesTopRight"))
			{
				floater->setDockControl(new LLDockControl(chiclet, floater, floater->getDockTongue(),
						LLDockControl::BOTTOM));
			}
			else
			{
				floater->setDockControl(new LLDockControl(chiclet, floater, floater->getDockTongue(),
						LLDockControl::TOP));
			}
			// </FS:Ansariel> Group notices, IMs and chiclets position
		}

		// window is positioned, now we can show it.
		floater->setVisible(TRUE);
	}

	return floater;
}

void FSFloaterIM::setDocked(bool docked, bool pop_on_undock)
{
	// update notification channel state
	LLNotificationsUI::LLScreenChannel* channel = static_cast<LLNotificationsUI::LLScreenChannel*>
		(LLNotificationsUI::LLChannelManager::getInstance()->
											findChannelByID(LLUUID(gSavedSettings.getString("NotificationChannelUUID"))));

	if(!isChatMultiTab())
	{
		LLTransientDockableFloater::setDocked(docked, pop_on_undock);
	}

	// update notification channel state
	if(channel)
	{
		channel->updateShowToastsState();
		channel->redrawToasts();
	}
}

void FSFloaterIM::setVisible(BOOL visible)
{
	LLNotificationsUI::LLScreenChannel* channel = static_cast<LLNotificationsUI::LLScreenChannel*>
		(LLNotificationsUI::LLChannelManager::getInstance()->
											findChannelByID(LLUUID(gSavedSettings.getString("NotificationChannelUUID"))));
	LLTransientDockableFloater::setVisible(visible);

	// update notification channel state
	if (channel)
	{
		channel->updateShowToastsState();
		channel->redrawToasts();
	}

	BOOL is_minimized = visible && isChatMultiTab()
		? FSFloaterIMContainer::getInstance()->isMinimized()
		: !visible;

	if (!is_minimized && mChatHistory && mInputEditor)
	{
		//only if floater was construced and initialized from xml
		updateMessages();
		FSFloaterIMContainer* im_container = FSFloaterIMContainer::getInstance();
		
		//prevent stealing focus when opening a background IM tab (EXT-5387, checking focus for EXT-6781)
		// If this is docked, is the selected tab, and the im container has focus, put focus in the input ctrl -KC
		bool is_active = im_container->getActiveFloater() == this && im_container->hasFocus();
		if (!isChatMultiTab() || is_active || hasFocus())
		{
			mInputEditor->setFocus(TRUE);
		}
	}

	if (!visible)
	{
		if (LLIMChiclet* chiclet = LLChicletBar::getInstance()->getChicletPanel()->findChiclet<LLIMChiclet>(mSessionID); chiclet)
		{
			chiclet->setToggleState(false);
		}
	}
	
	if (visible && isInVisibleChain())
	{
		sIMFloaterShowedSignal(mSessionID);
		gConsole->addSession(mSessionID);
	}
	else
	{
		gConsole->removeSession(mSessionID);
	}
}

void FSFloaterIM::setMinimized(BOOL b)
{
	handleMinimized(b);

	LLTransientDockableFloater::setMinimized(b);
}

BOOL FSFloaterIM::getVisible()
{
	if (isChatMultiTab())
	{
		FSFloaterIMContainer* im_container = FSFloaterIMContainer::getInstance();
		
		// Treat inactive floater as invisible.
		bool is_active = im_container->getActiveFloater() == this;
	
		//torn off floater is always inactive
		if (!is_active && getHost() != im_container)
		{
			return LLTransientDockableFloater::getVisible();
		}

		// getVisible() returns TRUE when Tabbed IM window is minimized.
		return is_active && !im_container->isMinimized() && im_container->getVisible();
	}
	else
	{
		return LLTransientDockableFloater::getVisible();
	}
}

//static
bool FSFloaterIM::toggle(const LLUUID& session_id)
{
	if (!isChatMultiTab())
	{
		FSFloaterIM* floater = LLFloaterReg::findTypedInstance<FSFloaterIM>("fs_impanel", session_id);
		if (floater && floater->getVisible() && floater->hasFocus())
		{
			// clicking on chiclet to close floater just hides it to maintain existing
			// scroll/text entry state
			floater->setVisible(false);
			return false;
		}
		else if (floater && (!floater->isDocked() || (floater->getVisible() && !floater->hasFocus())))
		{
			floater->setVisible(TRUE);
			floater->setFocus(TRUE);
			return true;
		}
	}

	// ensure the list of messages is updated when floater is made visible
	show(session_id);
	return true;
}

//static
FSFloaterIM* FSFloaterIM::findInstance(const LLUUID& session_id)
{
	return LLFloaterReg::findTypedInstance<FSFloaterIM>("fs_impanel", session_id);
}

FSFloaterIM* FSFloaterIM::getInstance(const LLUUID& session_id)
{
	return LLFloaterReg::getTypedInstance<FSFloaterIM>("fs_impanel", session_id);
}

void FSFloaterIM::sessionInitReplyReceived(const LLUUID& im_session_id)
{
	mSessionInitialized = true;

	//will be different only for an ad-hoc im session
	if (mSessionID != im_session_id)
	{
		mSessionID = im_session_id;
		setKey(im_session_id);
		mControlPanel->setSessionId(im_session_id);
	}

	// updating "Call" button from group/ad-hoc control panel here to enable it without placing into draw() (EXT-4796)
	if (LLIMModel::LLIMSession* session = LLIMModel::instance().findIMSession(im_session_id); session)
	{
		if ((session->isGroupSessionType() && gAgent.isInGroup(im_session_id)) || session->isAdHocSessionType())
		{
			updateCallButton();
		}
	}
	
	//*TODO here we should remove "starting session..." warning message if we added it in postBuild() (IB)

	//need to send delayed messaged collected while waiting for session initialization
	if (mQueuedMsgsForInit.size())
	{
		LLSD::array_iterator iter;
		for ( iter = mQueuedMsgsForInit.beginArray();
					iter != mQueuedMsgsForInit.endArray(); ++iter)
		{
			LLIMModel::sendMessage(iter->asString(), mSessionID,
				mOtherParticipantUUID, mDialog);
		}

		mQueuedMsgsForInit.clear();
	}
}

void FSFloaterIM::updateMessages()
{
	//<FS:HG> FS-1734 seperate name and text styles for moderator
	bool highlight_mods_chat = gSavedSettings.getBOOL("FSHighlightGroupMods");

	std::list<LLSD> messages;

	// we shouldn't reset unread message counters if IM floater doesn't have focus
	LLIMModel::instance().getMessages(mSessionID, messages, mLastMessageIndex + 1, hasFocus());

	if (messages.size())
	{
		LLSD chat_args;
		chat_args["use_plain_text_chat_history"] = gSavedSettings.getBOOL("PlainTextChatHistory");
		chat_args["show_names_for_p2p_conv"] = gSavedSettings.getBOOL("IMShowNamesForP2PConv");
		chat_args["show_time"] = gSavedSettings.getBOOL("FSShowTimestampsIM");
		
		LLIMModel::LLIMSession* pIMSession = LLIMModel::instance().findIMSession(mSessionID);
		RLV_ASSERT(pIMSession);

		chat_args["is_p2p"] = pIMSession->isP2PSessionType();

		std::ostringstream message;
		std::list<LLSD>::const_reverse_iterator iter = messages.rbegin();
		std::list<LLSD>::const_reverse_iterator iter_end = messages.rend();
		for (; iter != iter_end; ++iter)
		{
			LLSD msg = *iter;

			std::string time = msg["time"].asString();
			LLUUID from_id = msg["from_id"].asUUID();
			std::string from = msg["from"].asString();
			std::string message = msg["message"].asString();
			S32 is_history = msg["is_history"].asInteger();
			bool is_region_msg = msg["is_region_msg"].asBoolean();

			LLChat chat;
			chat.mFromID = from_id;
			chat.mSessionID = mSessionID;
			chat.mFromName = from;
			chat.mTimeStr = time;
			if (is_history)
			{
				chat.mChatStyle = (EChatStyle) is_history;
			}
			if (is_region_msg)
			{
				chat.mSourceType = CHAT_SOURCE_REGION;
			}

			// Bold group moderators' chat -KC
			//<FS:HG> FS-1734 seperate name and text styles for moderator
			//if (!is_history && bold_mods_chat && pIMSession && pIMSession->mSpeakers)
			if (!is_history && highlight_mods_chat && pIMSession && pIMSession->mSpeakers)
			{
				LLPointer<LLSpeaker> speakerp = pIMSession->mSpeakers->findSpeaker(from_id);
				if (speakerp && speakerp->mIsModerator)
				{
					chat.mChatStyle = CHAT_STYLE_MODERATOR;
				}
			}

			// process offer notification
			if (msg.has("notification_id"))
			{
				chat.mNotifId = msg["notification_id"].asUUID();
				// if notification exists - embed it
				if (LLNotificationsUtil::find(chat.mNotifId) != NULL)
				{
					// remove embedded notification from channel
					LLNotificationsUI::LLScreenChannel* channel = static_cast<LLNotificationsUI::LLScreenChannel*>
							(LLNotificationsUI::LLChannelManager::getInstance()->
																findChannelByID(LLUUID(gSavedSettings.getString("NotificationChannelUUID"))));
					if (getVisible())
					{
						// toast will be automatically closed since it is not storable toast
						channel->hideToast(chat.mNotifId);
					}
				}
				// if notification doesn't exist - try to use next message which should be log entry
				else
				{
					continue;
				}
			}
			//process text message
			else
			{
				chat.mText = message;
			}

			mChatHistory->appendMessage(chat, chat_args);
			mLastMessageIndex = msg["index"].asInteger();

			// if it is a notification - next message is a notification history log, so skip it
			if (chat.mNotifId.notNull() && LLNotificationsUtil::find(chat.mNotifId) != NULL)
			{
				if (++iter == iter_end)
				{
					break;
				}
				else
				{
					mLastMessageIndex++;
				}
			}
		}
	}

	mPendingMessages = 0;
}

void FSFloaterIM::reloadMessages(bool clean_messages/* = false*/)
{
	if (clean_messages)
	{
		LLIMModel::LLIMSession * sessionp = LLIMModel::instance().findIMSession(mSessionID);

		if (NULL != sessionp)
		{
			sessionp->loadHistory();
		}
	}

	mChatHistory->clear();
	mLastMessageIndex = -1;
	updateMessages();
}

void FSFloaterIM::onInputEditorFocusReceived()
{
	// Allow enabling the FSFloaterIM input editor only if session can accept text
	LLIMModel::LLIMSession* im_session =
		LLIMModel::instance().findIMSession(mSessionID);
	//TODO: While disabled lllineeditor can receive focus we need to check if it is enabled (EK)
	if (im_session && im_session->mTextIMPossible && mInputEditor->getEnabled())
	{
		//in disconnected state IM input editor should be disabled
		mInputEditor->setEnabled(!gDisconnected);
	}
}

void FSFloaterIM::onInputEditorFocusLost()
{
	setTyping(false);
}

void FSFloaterIM::onInputEditorKeystroke()
{
	if (!mInputEditor->getText().empty())
	{
		setTyping(true);
	}
	else
	{
		// Deleting all text counts as stopping typing.
		setTyping(false);
	}
}

void FSFloaterIM::setTyping(bool typing)
{
	if (typing)
	{
		// Started or proceeded typing, reset the typing timeout timer
		mTypingTimeoutTimer.reset();
	}

	if (mMeTyping != typing)
	{
		// Typing state is changed
		mMeTyping = typing;
		// So, should send current state
		mShouldSendTypingState = true;
		// In case typing is started, send state after some delay
		mTypingTimer.reset();
	}

	// Don't want to send typing indicators to multiple people, potentially too
	// much network traffic. Only send in person-to-person IMs.
	// <FS:Techwolf Lupindo> fsdata support
	//if ( mShouldSendTypingState && mDialog == IM_NOTHING_SPECIAL )
	if ( mShouldSendTypingState && mDialog == IM_NOTHING_SPECIAL && !(FSData::instance().isSupport(mOtherParticipantUUID) && FSData::instance().isAgentFlag(gAgentID, FSData::NO_SUPPORT)))
	// </FS:Techwolf Lupindo>
	{
		if (mMeTyping)
		{
			if ( mTypingTimer.getElapsedTimeF32() > 1.f )
			{
				// Still typing, send 'start typing' notification
				LLIMModel::instance().sendTypingState(mSessionID, mOtherParticipantUUID, TRUE);
				mShouldSendTypingState = false;
				mMeTypingTimer.reset();
			}
		}
		else
		{
			// Send 'stop typing' notification immediately
			LLIMModel::instance().sendTypingState(mSessionID, mOtherParticipantUUID, FALSE);
			mShouldSendTypingState = false;
		}
	}

	LLIMSpeakerMgr* speaker_mgr = LLIMModel::getInstance()->getSpeakerManager(mSessionID);
	if (speaker_mgr)
		speaker_mgr->setSpeakerTyping(gAgent.getID(), FALSE);
}

void FSFloaterIM::processIMTyping(const LLUUID& from_id, BOOL typing)
{
	if (typing)
	{
		// other user started typing
		addTypingIndicator(from_id);
		mOtherTypingTimer.reset();
	}
	else
	{
		// other user stopped typing
		removeTypingIndicator(from_id);
	}
}

void FSFloaterIM::processAgentListUpdates(const LLSD& body)
{
	loadInitialInvitedIDs();

	uuid_vec_t joined_uuids;

	if (body.isMap() && body.has("agent_updates") && body["agent_updates"].isMap())
	{
		LLSD::map_const_iterator update_it;
		for (update_it = body["agent_updates"].beginMap();
			update_it != body["agent_updates"].endMap();
			++update_it)
		{
			LLUUID agent_id(update_it->first);
			LLSD agent_data = update_it->second;

			if (agent_data.isMap())
			{
				// store the new participants in joined_uuids
				if (agent_data.has("transition") && agent_data["transition"].asString() == "ENTER")
				{
					joined_uuids.push_back(agent_id);
				}

				// process the moderator mutes
				if (agent_id == gAgentID && agent_data.has("info") && agent_data["info"].has("mutes"))
				{
					BOOL moderator_muted_text = agent_data["info"]["mutes"]["text"].asBoolean();
					mInputEditor->setEnabled(!moderator_muted_text);
					std::string label;
					if (moderator_muted_text)
						label = LLTrans::getString("IM_muted_text_label");
					else
						label = LLTrans::getString("IM_to_label") + " " + LLIMModel::instance().getName(mSessionID);
					mInputEditor->setLabel(label);

					if (moderator_muted_text)
						LLNotificationsUtil::add("TextChatIsMutedByModerator");
				}
			}
		}
	}

	// the vectors need to be sorted for computing the intersection and difference
	std::sort(mInvitedParticipants.begin(), mInvitedParticipants.end());
	std::sort(joined_uuids.begin(), joined_uuids.end());

	uuid_vec_t intersection; // uuids of invited residents who have joined the conversation
	std::set_intersection(mInvitedParticipants.begin(), mInvitedParticipants.end(),
						  joined_uuids.begin(), joined_uuids.end(),
						  std::back_inserter(intersection));

	if (!intersection.empty())
	{
		sendParticipantsAddedNotification(intersection);
	}

	// Remove all joined participants from invited array.
	// The difference between the two vectors (the elements in mInvitedParticipants which are not in joined_uuids)
	// is placed at the beginning of mInvitedParticipants, then all other elements are erased.
	mInvitedParticipants.erase(std::set_difference(mInvitedParticipants.begin(), mInvitedParticipants.end(),
												   joined_uuids.begin(), joined_uuids.end(),
												   mInvitedParticipants.begin()),
							   mInvitedParticipants.end());
}

void FSFloaterIM::sendParticipantsAddedNotification(const uuid_vec_t& uuids)
{
	std::string names_string;
	LLAvatarActions::buildResidentsString(uuids, names_string);
	LLStringUtil::format_map_t args;
	args["[NAME]"] = names_string;
	
	sendMsg(getString(uuids.size() > 1 ? "multiple_participants_added" : "participant_added", args));
}

void FSFloaterIM::updateChatHistoryStyle()
{
	mChatHistory->clear();
	mLastMessageIndex = -1;
	updateMessages();
}

void FSFloaterIM::processChatHistoryStyleUpdate(const LLSD& newvalue)
{
	LLFontGL* font = LLViewerChat::getChatFont();
	LLFloaterReg::const_instance_list_t& inst_list = LLFloaterReg::getFloaterList("fs_impanel");
	for (LLFloaterReg::const_instance_list_t::const_iterator iter = inst_list.begin();
		 iter != inst_list.end(); ++iter)
	{
		FSFloaterIM* floater = dynamic_cast<FSFloaterIM*>(*iter);
		if (floater)
		{
			floater->updateChatHistoryStyle();
			floater->mInputEditor->setFont(font);

			// Re-set the current text to make style update instant
			std::string text = floater->mInputEditor->getText();
			floater->mInputEditor->clear();
			floater->mInputEditor->setText(text);
		}
	}
}

BOOL FSFloaterIM::handleDragAndDrop(S32 x, S32 y, MASK mask,
						   BOOL drop, EDragAndDropType cargo_type,
						   void *cargo_data, EAcceptance *accept,
						   std::string& tooltip_msg)
{
	if (cargo_type == DAD_PERSON)
	{
		if (dropPerson(static_cast<LLUUID*>(cargo_data), drop))
		{
			*accept = ACCEPT_YES_MULTI;
		}
		else
		{
			*accept = ACCEPT_NO;
		}
	}

	else if (mDialog == IM_NOTHING_SPECIAL)
	{
		LLToolDragAndDrop::handleGiveDragAndDrop(mOtherParticipantUUID, mSessionID, drop,
												 cargo_type, cargo_data, accept);
	}

	// handle case for dropping calling cards (and folders of calling cards) onto invitation panel for invites
	else if (isInviteAllowed() && !mIsP2PChat)
	{
		*accept = ACCEPT_NO;

		if (cargo_type == DAD_CALLINGCARD)
		{
			if (dropCallingCard((LLInventoryItem*)cargo_data, drop))
			{
				*accept = ACCEPT_YES_MULTI;
			}
		}
		else if (cargo_type == DAD_CATEGORY)
		{
			if (dropCategory((LLInventoryCategory*)cargo_data, drop))
			{
				*accept = ACCEPT_YES_MULTI;
			}
		}
	}
	return TRUE;
}

bool FSFloaterIM::dropCallingCard(LLInventoryItem* item, bool drop)
{
	bool rv = true;
	if (item && item->getCreatorUUID().notNull())
	{
		uuid_vec_t ids;
		ids.push_back(item->getCreatorUUID());
		if (canAddSelectedToChat(ids))
		{
			if (drop)
			{
				mPendingParticipants.push_back(item->getCreatorUUID());
				mEventTimer.start();
			}
		}
		else
		{
			rv = false;
		}
	}
	else
	{
		// set to false if creator uuid is null.
		rv = false;
	}
	return rv;
}

bool FSFloaterIM::dropCategory(LLInventoryCategory* category, bool drop)
{
	bool rv = true;
	if (category)
	{
		LLInventoryModel::cat_array_t cats;
		LLInventoryModel::item_array_t items;
		LLUniqueBuddyCollector buddies;
		gInventory.collectDescendentsIf(category->getUUID(),
										cats,
										items,
										LLInventoryModel::EXCLUDE_TRASH,
										buddies);
		S32 count = items.size();
		if (count == 0)
		{
			rv = false;
		}
		else
		{
			uuid_vec_t ids;
			ids.reserve(count);
			for(S32 i = 0; i < count; ++i)
			{
				ids.push_back(items.at(i)->getCreatorUUID());
			}

			if (canAddSelectedToChat(ids))
			{
				if (drop)
				{
					mPendingParticipants.insert(mPendingParticipants.end(), ids.begin(), ids.end());
					mEventTimer.start();
				}
			}
			else
			{
				rv = false;
			}
		}
	}
	return rv;
}

bool FSFloaterIM::dropPerson(LLUUID* person_id, bool drop)
{
	bool res = person_id && person_id->notNull();
	if (res)
	{
		uuid_vec_t ids;
		ids.push_back(*person_id);

		res = canAddSelectedToChat(ids);
		if (res && drop)
		{
			// these people will be added during the next draw() call
			// (so they can be added all at once)
			mPendingParticipants.push_back(*person_id);
			mEventTimer.start();
		}
	}

	return res;
}

//virtual
BOOL FSFloaterIM::tick()
{
	// add people who were added via dropPerson()
	if (!mPendingParticipants.empty())
	{
		addSessionParticipants(mPendingParticipants);
		mPendingParticipants.clear();
	}

	mEventTimer.stop();

	return FALSE;
}

// virtual
BOOL FSFloaterIM::handleKeyHere( KEY key, MASK mask )
{
	BOOL handled = FALSE;
	
	if (key == KEY_RETURN)
	{
		if (mask == MASK_ALT)
		{
			mInputEditor->updateHistory();
			sendMsgFromInputEditor(CHAT_TYPE_OOC);
			handled = TRUE;
		}
		else if (mask == (MASK_SHIFT | MASK_CONTROL))
		{
			if (!gSavedSettings.getBOOL("FSUseSingleLineChatEntry"))
			{
				if ((wstring_utf8_length(mInputEditor->getWText()) + wchar_utf8_length('\n')) > mInputEditor->getMaxTextLength())
				{
					LLUI::getInstance()->reportBadKeystroke();
				}
				else
				{
					mInputEditor->insertLinefeed();
				}
			}
			else
			{
				if ((wstring_utf8_length(mInputEditor->getWText()) + wchar_utf8_length(llwchar(182))) > mInputEditor->getMaxTextLength())
				{
					LLUI::getInstance()->reportBadKeystroke();
				}
				else
				{
					LLWString line_break(1, llwchar(182));
					mInputEditor->insertText(line_break);
				}
			}
			handled = TRUE;
		}
	}

	return handled;
}

BOOL FSFloaterIM::isInviteAllowed() const
{
	return ( (IM_SESSION_CONFERENCE_START == mDialog)
			 || (IM_SESSION_INVITE == mDialog && !gAgent.isInGroup(mSessionID))
			 || mIsP2PChat);
}

BOOL FSFloaterIM::inviteToSession(const uuid_vec_t& ids)
{
	LLViewerRegion* region = gAgent.getRegion();
	bool is_region_exist = region != NULL;

	if (is_region_exist)
	{
		size_t count = ids.size();

		if (isInviteAllowed() && (count > 0))
		{
			LL_DEBUGS("FSFloaterIM") << "FSFloaterIM::inviteToSession() - inviting participants" << LL_ENDL;

			std::string url = region->getCapability("ChatSessionRequest");

			LLSD data;
			data["params"] = LLSD::emptyArray();
			for (size_t i = 0; i < count; ++i)
			{
				data["params"].append(ids[i]);
			}
			data["method"] = "invite";
			data["session-id"] = mSessionID;

			LLCoreHttpUtil::HttpCoroutineAdapter::callbackHttpPost( url, data );
		}
		else
		{
			LL_DEBUGS("FSFloaterIM") << "LLFloaterIMSession::inviteToSession -"
									 << " no need to invite agents for "
									 << mDialog << LL_ENDL;
			// successful add, because everyone that needed to get added
			// was added.
		}
	}

	return is_region_exist;
}

void FSFloaterIM::addTypingIndicator(const LLUUID& from_id)
{
	// We may have lost a "stop-typing" packet, don't add it twice
	if (from_id.notNull() && !mOtherTyping)
	{
		mOtherTyping = true;

		// Save and set new title
		mSavedTitle = getTitle();
		setTitle((gSavedSettings.getBOOL("FSTypingChevronPrefix") ? "> " : "") + mTypingStart.getString());

		// Update speaker
		LLIMSpeakerMgr* speaker_mgr = LLIMModel::getInstance()->getSpeakerManager(mSessionID);
		if ( speaker_mgr )
		{
			speaker_mgr->setSpeakerTyping(from_id, TRUE);
		}
	}
}

void FSFloaterIM::removeTypingIndicator(const LLUUID& from_id)
{
	if (mOtherTyping)
	{
		mOtherTyping = false;

		// Revert the title to saved one
		setTitle(mSavedTitle);

		if (from_id.notNull())
		{
			// Update speaker
			LLIMSpeakerMgr* speaker_mgr = LLIMModel::getInstance()->getSpeakerManager(mSessionID);
			if ( speaker_mgr )
			{
				speaker_mgr->setSpeakerTyping(from_id, FALSE);
			}
		}
		// Ansariel: Transplant of STORM-1975; Typing notifications are only sent in P2P sessions,
		//           so we can use mOtherParticipantUUID here and don't need LLIMInfo (Kitty said
		//           it's dangerous to use the stored LLIMInfo in LL's version!)
		else if (mDialog == IM_NOTHING_SPECIAL && mOtherParticipantUUID.notNull())
		{
			// Update speaker
			LLIMSpeakerMgr* speaker_mgr = LLIMModel::getInstance()->getSpeakerManager(mSessionID);
			if ( speaker_mgr )
			{
				speaker_mgr->setSpeakerTyping(mOtherParticipantUUID, FALSE);
			}
		}
	}
}

// static
void FSFloaterIM::closeHiddenIMToasts()
{
	class IMToastMatcher: public LLNotificationsUI::LLScreenChannel::Matcher
	{
	public:
		bool matches(const LLNotificationPtr notification) const
		{
			// "notifytoast" type of notifications is reserved for IM notifications
			return "notifytoast" == notification->getType();
		}
	};

	LLNotificationsUI::LLScreenChannel* channel = LLNotificationsUI::LLChannelManager::getNotificationScreenChannel();
	if (channel)
	{
		channel->closeHiddenToasts(IMToastMatcher());
	}
}
// static
void FSFloaterIM::confirmLeaveCallCallback(const LLSD& notification, const LLSD& response)
{
	S32 option = LLNotificationsUtil::getSelectedOption(notification, response);
	const LLSD& payload = notification["payload"];
	LLUUID session_id = payload["session_id"];
	bool snooze = payload["snooze"].asBoolean();

	FSFloaterIM* im_floater = LLFloaterReg::findTypedInstance<FSFloaterIM>("fs_impanel", session_id);
	if (option == 0 && im_floater)
	{
		LLIMModel::LLIMSession* session = LLIMModel::instance().findIMSession(session_id);
		if (session)
		{
			if (snooze)
			{
				im_floater->confirmSnooze();
				return;
			}

			session->mCloseAction = LLIMModel::LLIMSession::CLOSE_DEFAULT;
		}
		im_floater->closeFloater();
	}

	return;
}

// static
bool FSFloaterIM::isChatMultiTab()
{
	// Restart is required in order to change chat window type.
	static bool is_single_window = gSavedSettings.getS32("FSChatWindow") == 1;
	return is_single_window;
}

// static
void FSFloaterIM::initIMFloater()
{
	// This is called on viewer start up
	// init chat window type before user changed it in preferences
	isChatMultiTab();
}

//static
void FSFloaterIM::sRemoveTypingIndicator(const LLSD& data)
{
	LLUUID session_id = data["session_id"];
	if (session_id.isNull())
		return;

	LLUUID from_id = data["from_id"];
	if (gAgentID == from_id || LLUUID::null == from_id)
		return;

	FSFloaterIM* floater = FSFloaterIM::findInstance(session_id);
	if (!floater)
		return;

	if (IM_NOTHING_SPECIAL != floater->mDialog)
		return;

	floater->removeTypingIndicator();
}

void FSFloaterIM::onNewIMReceived(const LLUUID& session_id)
{
	if (isChatMultiTab())
	{
		if (FSFloaterIM::findInstance(session_id))
		{
			return;
		}

		FSFloaterIM* new_tab = FSFloaterIM::getInstance(session_id);
		FSFloaterIMContainer::getInstance()->addNewSession(new_tab);
	}
}

void FSFloaterIM::onClickCloseBtn(bool app_quitting)
{
	LLIMModel::LLIMSession* session = LLIMModel::instance().findIMSession(
				mSessionID);

	if (!session)
	{
		LL_WARNS("FSFloaterIM") << "Empty session." << LL_ENDL;
		return;
	}

	bool is_call_with_chat = session->isGroupSessionType()
			|| session->isAdHocSessionType() || session->isP2PSessionType();

	LLVoiceChannel* voice_channel = LLIMModel::getInstance()->getVoiceChannel(mSessionID);

	if (is_call_with_chat && voice_channel != NULL && voice_channel->isActive())
	{
		LLSD payload;
		payload["session_id"] = mSessionID;
		payload["snooze"] = false;
		LLNotificationsUtil::add("ConfirmLeaveCall", LLSD(), payload, confirmLeaveCallCallback);
		return;
	}

	session->mCloseAction = LLIMModel::LLIMSession::CLOSE_DEFAULT;

	LLFloater::onClickCloseBtn();
}

// <FS:Zi> Viewer version popup
BOOL FSFloaterIM::enableViewerVersionCallback(const LLSD& notification,const LLSD& response)
{
	S32 option = LLNotificationsUtil::getSelectedOption(notification,response);

	BOOL result = FALSE;
	if (option == 0)		// "yes"
	{
		result = TRUE;
	}

	gSavedSettings.setBOOL("FSSupportGroupChatPrefix3", result);
	gSavedSettings.setBOOL("FSSupportGroupChatPrefixTesting", result);
	return result;
}
// </FS:Zi>

// <FS:CR> FIRE-11734
//static
void FSFloaterIM::clearAllOpenHistories()
{
	LLFloaterReg::const_instance_list_t& inst_list = LLFloaterReg::getFloaterList("fs_impanel");
	for (LLFloaterReg::const_instance_list_t::const_iterator iter = inst_list.begin();
		 iter != inst_list.end(); ++iter)
	{
		FSFloaterIM* floater = dynamic_cast<FSFloaterIM*>(*iter);
		if (floater)
		{
			floater->reloadMessages(true);
		}
	}
	
	FSFloaterNearbyChat* nearby_chat = LLFloaterReg::getTypedInstance<FSFloaterNearbyChat>("fs_nearby_chat", LLSD());
	if (nearby_chat)
	{
		nearby_chat->reloadMessages(true);
	}
}

void FSFloaterIM::initIMSession(const LLUUID& session_id)
{
	// Change the floater key to bind it to a new session.
	setKey(session_id);
	
	mSessionID = session_id;
	LLIMModel::LLIMSession* session = LLIMModel::instance().findIMSession(mSessionID);
	
	if (session)
	{
		mIsP2PChat = session->isP2PSessionType();
		mSessionInitialized = session->mSessionInitialized;
		mDialog = session->mType;
	}
}

void FSFloaterIM::reshapeChatLayoutPanel()
{
	mChatLayoutPanel->reshape(mChatLayoutPanel->getRect().getWidth(), mInputEditor->getRect().getHeight() + mInputEditorPad, FALSE);
}

boost::signals2::connection FSFloaterIM::setIMFloaterShowedCallback(const floater_showed_signal_t::slot_type& cb)
{
	return FSFloaterIM::sIMFloaterShowedSignal.connect(cb);
}

void FSFloaterIM::updateUnreadMessageNotification(S32 unread_messages)
{
	if (unread_messages == 0 || !gSavedSettings.getBOOL("FSNotifyUnreadIMMessages"))
	{
		mUnreadMessagesNotificationPanel->setVisible(FALSE);
	}
	else
	{
		mUnreadMessagesNotificationTextBox->setTextArg("[NUM]", llformat("%d", unread_messages));
		mUnreadMessagesNotificationPanel->setVisible(TRUE);
	}
}

void FSFloaterIM::onAddButtonClicked()
{
	LLView* button = findChild<LLButton>("add_participant_btn");
	LLFloater* root_floater = this;
	LLFloaterAvatarPicker* picker = LLFloaterAvatarPicker::show(boost::bind(&FSFloaterIM::addSessionParticipants, this, _1), TRUE, TRUE, FALSE, root_floater->getName(), button);
	if (!picker)
	{
		return;
	}

	// Need to disable 'ok' button when selected users are already in conversation.
	picker->setOkBtnEnableCb(boost::bind(&FSFloaterIM::canAddSelectedToChat, this, _1));
	
	if (root_floater)
	{
		root_floater->addDependentFloater(picker);
	}

	LLTransientFloaterMgr::getInstance()->addControlView(LLTransientFloaterMgr::IM, picker);
}

bool FSFloaterIM::canAddSelectedToChat(const uuid_vec_t& uuids)
{
	if (!LLIMModel::instance().findIMSession(mSessionID)
		|| mDialog == IM_SESSION_GROUP_START
		|| (mDialog == IM_SESSION_INVITE && gAgent.isInGroup(mSessionID)))
	{
		return false;
	}

	if (mIsP2PChat)
	{
		// For a P2P session just check if we are not adding the other participant.

		for (const auto& uuid : uuids)
		{
			if (uuid == mOtherParticipantUUID)
			{
				return false;
			}
		}
	}

	return true;
}

void FSFloaterIM::addSessionParticipants(const uuid_vec_t& uuids)
{
	if (mIsP2PChat)
	{
		LLSD payload;
		LLSD args;

		LLNotificationsUtil::add("ConfirmAddingChatParticipants", args, payload,
				boost::bind(&FSFloaterIM::addP2PSessionParticipants, this, _1, _2, uuids));
	}
	else
	{
		if (findInstance(mSessionID))
		{
			// remember whom we have invited, to notify others later, when the invited ones actually join
			mInvitedParticipants.insert(mInvitedParticipants.end(), uuids.begin(), uuids.end());
		}
		
		inviteToSession(uuids);
	}
}

void FSFloaterIM::addP2PSessionParticipants(const LLSD& notification, const LLSD& response, const uuid_vec_t& uuids)
{
	S32 option = LLNotificationsUtil::getSelectedOption(notification, response);
	if (option != 0)
	{
		return;
	}

	LLVoiceChannel* voice_channel = LLIMModel::getInstance()->getVoiceChannel(mSessionID);

	// first check whether this is a voice session
	bool is_voice_call = voice_channel && voice_channel->isActive();

	uuid_vec_t temp_ids;
	uuid_vec_t invited_ids;

	// Add the initial participant of a P2P session
	temp_ids.push_back(mOtherParticipantUUID);
	temp_ids.insert(temp_ids.end(), uuids.begin(), uuids.end());

	LLUUID session_id = mSessionID;

	// then we can close the current session
	if (findInstance(mSessionID))
	{
		// remember whom we have invited, to notify others later, when the invited ones actually join
		std::copy(uuids.begin(), uuids.end(), std::back_inserter(mInvitedParticipants));
		std::copy(mInvitedParticipants.begin(), mInvitedParticipants.end(), std::back_inserter(invited_ids));

		// Ansariel: This will result in the floater actually being closed as opposed in CHUI!
		onClose(false);
	}

	// Start a new ad hoc voice call if we invite new participants to a P2P call,
	// or start a text chat otherwise.
	if (is_voice_call)
	{
		session_id = LLAvatarActions::startAdhocCall(temp_ids, session_id);
	}
	else
	{
		session_id = LLAvatarActions::startConference(temp_ids, session_id);
	}

	LLIMModel::LLIMSession* session = LLIMModel::instance().findIMSession(session_id);
	if (session)
	{
		session->mInitialInvitedIDs = invited_ids;
	}
}

void FSFloaterIM::loadInitialInvitedIDs()
{
	LLIMModel::LLIMSession* session = LLIMModel::instance().findIMSession(mSessionID);
	if (session && !session->mInitialInvitedIDs.empty())
	{
		mInvitedParticipants = session->mInitialInvitedIDs;
		session->mInitialInvitedIDs.clear();
	}
}

void FSFloaterIM::handleMinimized(bool minimized)
{
	if (minimized)
	{
		gConsole->removeSession(mSessionID);
	}
	else
	{
		gConsole->addSession(mSessionID);
		if (mChatHistory)
		{
			updateMessages();
		}
	}
}

bool FSFloaterIM::applyRectControl()
{
	bool res = true;

	// We need to do some sort of hack here to prevent torn-off floaters from
	// jumping around if clicking on the IM chiclets: Clicking on a chiclet to
	// switch to a particular IM floater will call FSFloaterIM::show() and in
	// the process LLFloater::applyControlsAndPosition(). Depending on the result
	// of the call to applyRectControl(), applyPositioning() positioning is
	// called that will ultimately set the position of the floater depending
	// of the position of the last floater in the group. However, this doesn't
	// work properly and will cause floaters to jump. To prevent this, we only
	// apply the rect if not called by FSFloaterIM::show(). To prevent an
	// additionally misplaced floater caused by cascading a group of IM floaters,
	// we force LLFloater::applyRectControl() into the path where no cascaded
	// position is going to be applied by temporarily clear the instance name
	// of the floater. -AH
	if (mApplyRect)
	{
		std::string name = mInstanceName;
		mInstanceName.clear();
		res = LLFloater::applyRectControl();
		mInstanceName = name;
	}

	return res;
}

void FSFloaterIM::onEmojiRecentPanelToggleBtnClicked()
{
	BOOL show = mEmojiRecentPanel->getVisible() ? FALSE : TRUE;
	if (show)
	{
		initEmojiRecentPanel();
	}

	mEmojiRecentPanel->setVisible(show);
	mInputEditor->setFocus(TRUE);
}

void FSFloaterIM::initEmojiRecentPanel()
{
	std::list<llwchar>& recentlyUsed = LLFloaterEmojiPicker::getRecentlyUsed();
	if (recentlyUsed.empty())
	{
		mEmojiRecentEmptyText->setVisible(TRUE);
		mEmojiRecentIconsCtrl->setVisible(FALSE);
	}
	else
	{
		LLWString emojis;
		for (llwchar emoji : recentlyUsed)
		{
			emojis += emoji;
		}
		mEmojiRecentIconsCtrl->setEmojis(emojis);
		mEmojiRecentEmptyText->setVisible(FALSE);
		mEmojiRecentIconsCtrl->setVisible(TRUE);
	}
}

void FSFloaterIM::onRecentEmojiPicked(const LLSD& value)
{
	LLSD::String str = value.asString();
	if (str.size())
	{
		LLWString wstr = utf8string_to_wstring(str);
		if (wstr.size())
		{
			llwchar emoji = wstr[0];
			mInputEditor->insertEmoji(emoji);
		}
	}
}

void FSFloaterIM::onEmojiPickerToggleBtnClicked()
{
	mInputEditor->setFocus(TRUE);
	mInputEditor->showEmojiHelper();
}