/** 
 * @file fsfloaternearbychat.cpp
 * @brief Nearby chat history scrolling panel implementation
 *
 * $LicenseInfo:firstyear=2009&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 * Copyright (C) 2012, Zi Ree @ Second Life
 * 
 * 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: LLFloaterNearbyChat.cpp

#include "llviewerprecompiledheaders.h"

#include "fsfloaternearbychat.h"

#include "chatbar_as_cmdline.h"
#include "fschathistory.h"
#include "fschatoptionsmenu.h"
#include "fscommon.h"
#include "fsfloaterim.h"
#include "fsfloaterimcontainer.h"
#include "fsnearbychathub.h"
#include "llagent.h" 			// gAgent
#include "llanimationstates.h"	// ANIM_AGENT_WHISPER, ANIM_AGENT_TALK, ANIM_AGENT_SHOUT
#include "llautoreplace.h"
#include "llavatarnamecache.h"
#include "llbutton.h"
#include "llchannelmanager.h"
#include "llchatentry.h"
#include "llcombobox.h"
#include "llcommandhandler.h"
#include "llconsole.h"
#include "lldraghandle.h"
#include "llfloaterreg.h"
#include "llfloatersearchreplace.h"
#include "llfocusmgr.h"
#include "llgesturemgr.h"
#include "lliconctrl.h"
#include "llkeyboard.h"
#include "lllayoutstack.h"
#include "lllogchat.h"
#include "llmenugl.h"
#include "llmultigesture.h"
#include "llresizebar.h"
#include "llresizehandle.h"
#include "llrootview.h"
#include "llspinctrl.h"
#include "llstylemap.h"
#include "lltextbox.h"
#include "lltrans.h"
#include "llviewercontrol.h"
#include "llviewermenu.h"//for gMenuHolder
#include "llviewerstats.h"
#include "llviewerwindow.h"
#include "llworld.h"
#include "rlvhandler.h"
// <FS:TS> FIRE-23123: Don't log newline spam even from own objects
#include "NACLantispam.h"
// </FS:TS> FIRE-23123

S32 FSFloaterNearbyChat::sLastSpecialChatChannel = 0;


FSFloaterNearbyChat::FSFloaterNearbyChat(const LLSD& key) 
	: LLFloater(key)
	,mChatHistory(NULL)
	,mChatHistoryMuted(NULL)
	,mInputEditor(NULL)
	,mChatLayoutPanel(NULL)
	,mInputPanels(NULL)
	,mChatLayoutPanelHeight(0)
	,mUnreadMessagesNotificationPanel(NULL)
	,mUnreadMessagesNotificationTextBox(NULL)
	,mUnreadMessages(0)
	,mUnreadMessagesMuted(0)
{
	//menu
	mEnableCallbackRegistrar.add("ChatOptions.Check", boost::bind(&FSFloaterNearbyChat::onChatOptionsCheckContextMenuItem, this, _2));
	mCommitCallbackRegistrar.add("ChatOptions.Action", boost::bind(&FSFloaterNearbyChat::onChatOptionsContextMenuItemClicked, this, _2));
	mEnableCallbackRegistrar.add("ChatOptions.Visible", boost::bind(&FSFloaterNearbyChat::onChatOptionsVisibleContextMenuItem, this, _2));
	mEnableCallbackRegistrar.add("ChatOptions.Enable", boost::bind(&FSFloaterNearbyChat::onChatOptionsEnableContextMenuItem, this, _2));
}

FSFloaterNearbyChat::~FSFloaterNearbyChat()
{
}

void FSFloaterNearbyChat::updateFSUseNearbyChatConsole(const LLSD &data)
{
	FSUseNearbyChatConsole = data.asBoolean();

	if (FSUseNearbyChatConsole)
	{
		removeScreenChat();
		gConsole->setVisible(TRUE);
	}
	else
	{
		gConsole->setVisible(FALSE);
	}
}


BOOL FSFloaterNearbyChat::postBuild()
{
	setIsSingleInstance(TRUE);

	mInputEditor = getChild<LLChatEntry>("chat_box");
	mInputEditor->setAutoreplaceCallback(boost::bind(&LLAutoReplace::autoreplaceCallback, LLAutoReplace::getInstance(), _1, _2, _3, _4, _5));
	mInputEditor->setCommitCallback(boost::bind(&FSFloaterNearbyChat::onChatBoxCommit, this));
	mInputEditor->setKeystrokeCallback(boost::bind(&FSFloaterNearbyChat::onChatBoxKeystroke, this));
	mInputEditor->setFocusLostCallback(boost::bind(&FSFloaterNearbyChat::onChatBoxFocusLost, this));
	mInputEditor->setFocusReceivedCallback(boost::bind(&FSFloaterNearbyChat::onChatBoxFocusReceived, this));
	mInputEditor->setTextExpandedCallback(boost::bind(&FSFloaterNearbyChat::reshapeChatLayoutPanel, this));
	mInputEditor->setPassDelete(TRUE);
	mInputEditor->setFont(LLViewerChat::getChatFont());
	mInputEditor->setLabel(getString("chatbox_label"));
	mInputEditor->enableSingleLineMode(gSavedSettings.getBOOL("FSUseSingleLineChatEntry"));

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

	getChild<LLButton>("chat_history_btn")->setCommitCallback(boost::bind(&FSFloaterNearbyChat::onHistoryButtonClicked, this));

	getChild<LLButton>("chat_search_btn")->setCommitCallback(boost::bind(&FSFloaterNearbyChat::onSearchButtonClicked, this));

	// chat type selector and send chat button
	mChatTypeCombo = getChild<LLComboBox>("chat_type");
	mChatTypeCombo->selectByValue("say");
	mChatTypeCombo->setCommitCallback(boost::bind(&FSFloaterNearbyChat::onChatTypeChanged, this));
	mSendChatButton = getChild<LLButton>("send_chat");
	mSendChatButton->setCommitCallback(boost::bind(&FSFloaterNearbyChat::onChatBoxCommit, this));
	onChatTypeChanged();

	mChatHistory = getChild<FSChatHistory>("chat_history");
	mChatHistoryMuted = getChild<FSChatHistory>("chat_history_muted");

	mUnreadMessagesNotificationPanel = getChild<LLLayoutPanel>("unread_messages_holder");
	mUnreadMessagesNotificationTextBox = getChild<LLTextBox>("unread_messages_text");
	mChatHistory->setUnreadMessagesUpdateCallback(boost::bind(&FSFloaterNearbyChat::updateUnreadMessageNotification, this, _1, false));
	mChatHistoryMuted->setUnreadMessagesUpdateCallback(boost::bind(&FSFloaterNearbyChat::updateUnreadMessageNotification, this, _1, true));
	
	FSUseNearbyChatConsole = gSavedSettings.getBOOL("FSUseNearbyChatConsole");
	gSavedSettings.getControl("FSUseNearbyChatConsole")->getSignal()->connect(boost::bind(&FSFloaterNearbyChat::updateFSUseNearbyChatConsole, this, _2));
	
	gSavedSettings.getControl("FSShowMutedChatHistory")->getSignal()->connect(boost::bind(&FSFloaterNearbyChat::updateShowMutedChatHistory, this, _2));

	return LLFloater::postBuild();
}

std::string appendTime()
{
	time_t utc_time = time_corrected();
	std::string timeStr ="[" + LLTrans::getString("TimeHour") + "]:[" + LLTrans::getString("TimeMin") + "]";
	if (gSavedSettings.getBOOL("FSSecondsinChatTimestamps"))
	{
		timeStr += ":[" + LLTrans::getString("TimeSec") + "]";
	}

	LLSD substitution;

	substitution["datetime"] = (S32) utc_time;
	LLStringUtil::format (timeStr, substitution);

	return timeStr;
}

void FSFloaterNearbyChat::addMessage(const LLChat& chat,bool archive,const LLSD &args)
{
	LLChat& tmp_chat = const_cast<LLChat&>(chat);
	bool use_plain_text_chat_history = gSavedSettings.getBOOL("PlainTextChatHistory");
	bool show_timestamps_nearby_chat = gSavedSettings.getBOOL("FSShowTimestampsNearbyChat");
	// [FIRE-1641 : SJ]: Option to hide timestamps in nearby chat - add Timestamp when show_timestamps_nearby_chat is TRUE
	if (show_timestamps_nearby_chat)
	{
		if (tmp_chat.mTimeStr.empty())
		{
			tmp_chat.mTimeStr = appendTime();
		}
	}

	tmp_chat.mFromName = chat.mFromName;
	LLSD chat_args = args;
	chat_args["use_plain_text_chat_history"] = use_plain_text_chat_history;
	chat_args["show_time"] = show_timestamps_nearby_chat;
	chat_args["is_local"] = true;
	mChatHistoryMuted->appendMessage(chat, chat_args);
	if (!chat.mMuted)
	{
		mChatHistory->appendMessage(chat, chat_args);
	}

	if (archive)
	{
		mMessageArchive.push_back(chat);
		if (mMessageArchive.size() > 200)
		{
			mMessageArchive.erase(mMessageArchive.begin());
		}
	}

	if (args["do_not_log"].asBoolean() || chat.mMuted) 
	{
		return;
	}
	
	// AO: IF tab mode active, flash our tab
	if (isChatMultiTab())
	{
		LLMultiFloater* hostp = getHost();
		// KC: Don't flash tab on system messages
		if (!isInVisibleChain() && hostp && (chat.mSourceType == CHAT_SOURCE_AGENT || chat.mSourceType == CHAT_SOURCE_OBJECT))
		{
			hostp->setFloaterFlashing(this, TRUE);
		}
	}

	if (gSavedPerAccountSettings.getBOOL("LogNearbyChat"))
	{
		std::string from_name = chat.mFromName;

		if (chat.mSourceType == CHAT_SOURCE_AGENT)
		{
			// if the chat is coming from an agent, log the complete name
			LLAvatarName av_name;
			LLAvatarNameCache::get(chat.mFromID, &av_name);

			if (!av_name.isDisplayNameDefault() && (!gRlvHandler.hasBehaviour(RLV_BHVR_SHOWNAMES) || chat.mChatType == CHAT_TYPE_IM || chat.mChatType == CHAT_TYPE_IM_GROUP))
			{
				from_name = av_name.getCompleteName();
			}

			// Ansariel: Handle IMs in nearby chat
			// FS:LO FIRE-5230 - Chat Console Improvement: Replacing the "IM" in front of group chat messages with the actual group name
			if (gSavedSettings.getBOOL("FSShowIMInChatHistory"))
			{
				if (chat.mChatType == CHAT_TYPE_IM_GROUP && !chat.mFromNameGroup.empty())
				{
					from_name = "IM: " + chat.mFromNameGroup + from_name;
				}
				else if (chat.mChatType == CHAT_TYPE_IM)
				{
					from_name = "IM: " + from_name;
				}

				// <FS:LO> hack to prevent chat logs from containing lines like "TIMESTANMP IM:: friend is on/offline" (aka the double ":" )
				if (from_name == "IM:")
				{
					from_name = "IM";
				}
				// </FS:LO>
			}
			// FS:LO FIRE-5230 - Chat Console Improvement: Replacing the "IM" in front of group chat messages with the actual group name
		}
		// <FS:LO> Make logging IMs to the chat history file toggleable again
		if (!(chat.mChatType == CHAT_TYPE_IM || chat.mChatType == CHAT_TYPE_IM_GROUP) ||
			(chat.mChatType == CHAT_TYPE_IM && chat.mSourceType == CHAT_SOURCE_OBJECT) ||
			gSavedSettings.getBOOL("FSLogIMInChatHistory"))
		{
			// <FS:TS> FIRE-23123: Don't log newline flood even from own objects
			static LLCachedControl<bool> useAntiSpam(gSavedSettings, "UseAntiSpam");
			if (useAntiSpam && NACLAntiSpamRegistry::instance().checkNewlineFlood(ANTISPAM_QUEUE_CHAT, chat.mFromID, chat.mText))
			{
				return;
			}
			// </FS:TS> FIRE-23123
			LLLogChat::saveHistory("chat", from_name, chat.mFromID, chat.mText);
		}
	}
}

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

void FSFloaterNearbyChat::onHistoryButtonClicked()
{
	if (gSavedSettings.getBOOL("FSUseBuiltInHistory"))
	{
		LLFloaterReg::showInstance("preview_conversation", LLSD(LLUUID::null), true);
	}
	else
	{
		gViewerWindow->getWindow()->openFile(LLLogChat::makeLogFileName("chat"));
	}
}

void FSFloaterNearbyChat::onSearchButtonClicked()
{
	if (mChatHistory->getVisible())
	{
		LLFloaterSearchReplace::show(mChatHistory);
	}
	else if (mChatHistoryMuted->getVisible())
	{
		LLFloaterSearchReplace::show(mChatHistoryMuted);
	}
}

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

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

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

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

void FSFloaterNearbyChat::openFloater(const LLSD& key)
{
	// We override this to put nearbychat in the IM floater. -AO
	if (isChatMultiTab())
	{
		// <FS:Ansariel> [FS communication UI]
		//LLIMFloaterContainer* floater_container = LLIMFloaterContainer::getInstance();
		FSFloaterIMContainer* floater_container = FSFloaterIMContainer::getInstance();
		// </FS:Ansariel> [FS communication UI]
		// only show the floater container if we are actually attached -Zi
		if (floater_container && !gSavedSettings.getBOOL("ChatHistoryTornOff"))
		{
			floater_container->showFloater(this, LLTabContainer::START);
		}
		setVisible(TRUE);
		LLFloater::openFloater(key);
	}
}

void FSFloaterNearbyChat::removeScreenChat()
{
	LLNotificationsUI::LLScreenChannelBase* chat_channel = LLNotificationsUI::LLChannelManager::getInstance()->findChannelByID(LLUUID(gSavedSettings.getString("NearByChatChannelUUID")));
	if (chat_channel)
	{
		chat_channel->removeToastsFromChannel();
	}
}

void FSFloaterNearbyChat::setVisible(BOOL visible)
{
	if (visible)
	{
		removeScreenChat();
	}
	LLFloater::setVisible(visible);
	
	BOOL is_minimized = visible && isChatMultiTab()
		? FSFloaterIMContainer::getInstance()->isMinimized()
		: !visible;

	if (!is_minimized && mChatHistory && mInputEditor)
	{
		//only if floater was construced and initialized from xml
		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 && isInVisibleChain())
	{
		gConsole->addSession(LLUUID::null);
	}
	else
	{
		gConsole->removeSession(LLUUID::null);
	}
}

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

	LLFloater::setMinimized(b);
}

void FSFloaterNearbyChat::onOpen(const LLSD& key )
{
	FSFloaterIMContainer* floater_container = FSFloaterIMContainer::getInstance();
	if (floater_container)
	{
		if (gSavedSettings.getBOOL("ChatHistoryTornOff"))
		{
			// first set the tear-off host to this floater
			setHost(floater_container);
			// clear the tear-off host right after, the "last host used" will still stick
			setHost(NULL);
			// reparent the floater to the main view
			gFloaterView->addChild(this);
		}
		else
		{
			floater_container->addFloater(this, FALSE);
		}
	}

	// We override this to put nearbychat in the IM floater. -AO
	if(isChatMultiTab() && ! isVisible(this))
	{
		// only show the floater container if we are actually attached -Zi
		if (floater_container && !gSavedSettings.getBOOL("ChatHistoryTornOff"))
		{
			// make sure to show our parent floater, too
			floater_container->setVisible(TRUE);
			floater_container->showFloater(this, LLTabContainer::START);
		}
		setVisible(TRUE);
	}

	LLFloater::onOpen(key);
}

// exported here for "clrchat" command line -Zi
void FSFloaterNearbyChat::clearChatHistory()
{
	mChatHistory->clear();
	mChatHistoryMuted->clear();
}

void FSFloaterNearbyChat::updateChatHistoryStyle()
{
	clearChatHistory();

	LLSD do_not_log;
	do_not_log["do_not_log"] = true;
	for(std::vector<LLChat>::iterator it = mMessageArchive.begin();it!=mMessageArchive.end();++it)
	{
		// Update the messages without re-writing them to a log file.
		addMessage(*it,false, do_not_log);
	}
}

//static 
void FSFloaterNearbyChat::processChatHistoryStyleUpdate(const LLSD& newvalue)
{
	FSFloaterNearbyChat* nearby_chat = LLFloaterReg::getTypedInstance<FSFloaterNearbyChat>("fs_nearby_chat", LLSD());
	if (nearby_chat)
	{
		nearby_chat->updateChatHistoryStyle();
		nearby_chat->mInputEditor->setFont(LLViewerChat::getChatFont());

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

//static
bool FSFloaterNearbyChat::isWordsName(const std::string& name)
{
	// checking to see if it's display name plus username in parentheses 
	S32 open_paren = name.find(" (", 0);
	S32 close_paren = name.find(')', 0);

	if (open_paren != std::string::npos &&
		close_paren == name.length() - 1)
	{
		return true;
	}
	else
	{
		//checking for a single space
		S32 pos = name.find(' ', 0);
		return std::string::npos != pos && name.rfind(' ', name.length()) == pos && 0 != pos && name.length()-1 != pos;
	}
}

void FSFloaterNearbyChat::reloadMessages(bool clean_messages/* = false*/)
{
	if (clean_messages)
	{
		mMessageArchive.clear();
		loadHistory();
	}
	
	mChatHistory->clear();
	mChatHistoryMuted->clear();
	
	LLSD do_not_log;
	do_not_log["do_not_log"] = true;
	for(std::vector<LLChat>::iterator it = mMessageArchive.begin();it!=mMessageArchive.end();++it)
	{
		// Update the messages without re-writing them to a log file.
		addMessage(*it,false, do_not_log);
	}
}

void FSFloaterNearbyChat::loadHistory()
{
	LLSD do_not_log;
	do_not_log["do_not_log"] = true;

	std::list<LLSD> history;
	LLLogChat::loadChatHistory("chat", history);

	std::list<LLSD>::const_iterator it = history.begin();
	// FS:LO FIRE-5230 - Chat Console Improvement: Replacing the "IM" in front of group chat messages with the actual group name
	typedef enum e_im_type
	{
		IM_TYPE_NONE = 0,
		IM_TYPE_NORMAL,
		IM_TYPE_GROUP
	} EIMType;
	// FS:LO FIRE-5230 - Chat Console Improvement: Replacing the "IM" in front of group chat messages with the actual group name
	while (it != history.end())
	{
		EIMType im_type = IM_TYPE_NONE; // FS:LO FIRE-5230 - Chat Console Improvement: Replacing the "IM" in front of group chat messages with the actual group name
		const LLSD& msg = *it;

		std::string from = msg[LL_IM_FROM];
		std::string fromGroup = ""; // FS:LO FIRE-5230 - Chat Console Improvement: Replacing the "IM" in front of group chat messages with the actual group name
		LLUUID from_id;
		if (msg[LL_IM_FROM_ID].isDefined())
		{
			from_id = msg[LL_IM_FROM_ID].asUUID();
		}
		else
 		{
			// Ansariel: Strip IM prefix so we can properly
			//           retrieve the UUID in case we got a
			//           saved IM in nearby chat history.
			std::string im_prefix = "IM: ";
			size_t im_prefix_found = from.find(im_prefix);
			if (im_prefix_found != std::string::npos)
			{
				from = from.substr(im_prefix.length());
				// FS:LO FIRE-5230 - Chat Console Improvement: Replacing the "IM" in front of group chat messages with the actual group name
				//im_type = true;
				size_t group_im_prefix_start = from.find("[");
				size_t group_im_prefix_end = from.find("] ");
				if((group_im_prefix_start != std::string::npos) && (group_im_prefix_end != std::string::npos))
				{
					fromGroup = from.substr(group_im_prefix_start,group_im_prefix_end+2);
					from = from.substr(fromGroup.length());
					im_type = IM_TYPE_GROUP;
				}
				else
				{
					im_type = IM_TYPE_NORMAL;
				}
				// FS:LO FIRE-5230 - Chat Console Improvement: Replacing the "IM" in front of group chat messages with the actual group name
			}

			std::string legacy_name = gCacheName->buildLegacyName(from);
			from_id = LLAvatarNameCache::getInstance()->findIdByName(legacy_name);
		}

		LLChat chat;
		chat.mFromName = from;
		chat.mFromID = from_id;
		chat.mText = msg[LL_IM_TEXT].asString();
		chat.mTimeStr = msg[LL_IM_TIME].asString();
		chat.mChatStyle = CHAT_STYLE_HISTORY;

		// FS:LO FIRE-5230 - Chat Console Improvement: Replacing the "IM" in front of group chat messages with the actual group name
		//if (im_type) chat.mChatType = CHAT_TYPE_IM;
		if (im_type == IM_TYPE_NORMAL)
		{
			chat.mChatType = CHAT_TYPE_IM;
		}
		else if(im_type == IM_TYPE_GROUP)
		{
			chat.mChatType = CHAT_TYPE_IM_GROUP;
			chat.mFromNameGroup = fromGroup;
		}
		// FS:LO FIRE-5230 - Chat Console Improvement: Replacing the "IM" in front of group chat messages with the actual group name

		chat.mSourceType = CHAT_SOURCE_AGENT;
		if (from_id.isNull() && SYSTEM_FROM == from)
		{	
			chat.mSourceType = CHAT_SOURCE_SYSTEM;
			
		}
		else if (from_id.isNull())
		{
			chat.mSourceType = isWordsName(from) ? CHAT_SOURCE_UNKNOWN : CHAT_SOURCE_OBJECT;
		}

		addMessage(chat, true, do_not_log);

		it++;
	}
}

//static
FSFloaterNearbyChat* FSFloaterNearbyChat::findInstance()
{
	return LLFloaterReg::findTypedInstance<FSFloaterNearbyChat>("fs_nearby_chat", LLSD());
}

//static
FSFloaterNearbyChat* FSFloaterNearbyChat::getInstance()
{
	return LLFloaterReg::getTypedInstance<FSFloaterNearbyChat>("fs_nearby_chat", LLSD());
}

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

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

// virtual
BOOL FSFloaterNearbyChat::handleKeyHere( KEY key, MASK mask )
{
	BOOL handled = FALSE;
	
	if (KEY_RETURN == key)
	{
		if (mask == MASK_CONTROL && gSavedSettings.getBOOL("FSUseCtrlShout"))
		{
			// shout
			mInputEditor->updateHistory();
			sendChat(CHAT_TYPE_SHOUT);
			handled = TRUE;
		}
		else if (mask == MASK_SHIFT && gSavedSettings.getBOOL("FSUseShiftWhisper"))
		{
			// whisper
			mInputEditor->updateHistory();
			sendChat(CHAT_TYPE_WHISPER);
			handled = TRUE;
		}
		else if (mask == MASK_ALT && gSavedSettings.getBOOL("FSUseAltOOC"))
		{
			// OOC
			mInputEditor->updateHistory();
			sendChat(CHAT_TYPE_OOC);
			handled = TRUE;
		}
		else if (mask == (MASK_SHIFT | MASK_CONTROL))
		{
			// linefeed
			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;
}

void FSFloaterNearbyChat::onChatBoxKeystroke()
{
	S32 channel = 0;
	if (gSavedSettings.getBOOL("FSNearbyChatbar") &&
		gSavedSettings.getBOOL("FSShowChatChannel"))
	{
		channel = (S32)(FSFloaterNearbyChat::getInstance()->getChild<LLSpinCtrl>("ChatChannel")->get());
	}

	FSNearbyChat::handleChatBarKeystroke(mInputEditor, channel);
}

// static
void FSFloaterNearbyChat::onChatBoxFocusLost()
{
	// stop typing animation
	gAgent.stopTyping();
}

void FSFloaterNearbyChat::onChatBoxFocusReceived()
{
	mInputEditor->setEnabled(!gDisconnected && gSavedSettings.getBOOL("FSNearbyChatbar"));
}

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

void FSFloaterNearbyChat::sendChat( EChatType type )
{
	if (mInputEditor)
	{
		LLWString text = mInputEditor->getWText();
		LLWStringUtil::trim(text);
		LLWStringUtil::replaceChar(text,182,'\n'); // Convert paragraph symbols back into newlines.
		if (!text.empty())
		{
			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);
			}
			
			// Check if this is destined for another channel
			S32 channel = 0;
			bool is_set = false;
			FSNearbyChat::stripChannelNumber(text, &channel, &sLastSpecialChatChannel, &is_set);
			// If "/<number>" is not specified, see if a channel has been set in
			//  the spinner.
			if (!is_set &&
				gSavedSettings.getBOOL("FSNearbyChatbar") &&
				gSavedSettings.getBOOL("FSShowChatChannel"))
			{
				channel = (S32)(FSFloaterNearbyChat::getInstance()->getChild<LLSpinCtrl>("ChatChannel")->get());
			}
			
			std::string utf8text = wstring_to_utf8str(text);
			// Try to trigger a gesture, if not chat to a script.
			std::string utf8_revised_text;
			if (0 == channel)
			{
				// Convert OOC and MU* style poses
				utf8text = FSCommon::applyAutoCloseOoc(utf8text);
				utf8text = FSCommon::applyMuPose(utf8text);
				
				// discard returned "found" boolean
				if(!LLGestureMgr::instance().triggerAndReviseString(utf8text, &utf8_revised_text))
				{
					utf8_revised_text = utf8text;
				}
			}
			else
			{
				utf8_revised_text = utf8text;
			}
			
			utf8_revised_text = utf8str_trim(utf8_revised_text);
			
			EChatType nType;
			if (type == CHAT_TYPE_OOC)
			{
				nType = CHAT_TYPE_NORMAL;
			}
			else
			{
				nType = type;
			}
			
			type = FSNearbyChat::processChatTypeTriggers(nType, utf8_revised_text);
			
			if (!utf8_revised_text.empty() && cmd_line_chat(utf8_revised_text, type))
			{
				// Chat with animation
				sendChatFromViewer(utf8_revised_text, type, gSavedSettings.getBOOL("PlayChatAnim"));
			}
		}
		
		mInputEditor->setText(LLStringExplicit(""));
	}
	
	gAgent.stopTyping();
	
	// If the user wants to stop chatting on hitting return, lose focus
	// and go out of chat mode.
	if (gSavedSettings.getBOOL("CloseChatOnReturn") && gSavedSettings.getBOOL("FSUnfocusChatHistoryOnReturn"))
	{
		stopChat();
	}
}

void FSFloaterNearbyChat::onChatBoxCommit()
{
	if (mInputEditor->getText().length() > 0)
	{
		EChatType type = CHAT_TYPE_NORMAL;
		if (gSavedSettings.getBOOL("FSShowChatType"))
		{
			const std::string typeString = mChatTypeCombo->getValue();
			if (typeString == "whisper")
			{
				type = CHAT_TYPE_WHISPER;
			}
			else if (typeString == "shout")
			{
				type = CHAT_TYPE_SHOUT;
			}
		}
		sendChat(type);
	}
	
	gAgent.stopTyping();
}

void FSFloaterNearbyChat::onChatTypeChanged()
{
	mSendChatButton->setLabel(mChatTypeCombo->getSelectedItemLabel());
}

void FSFloaterNearbyChat::sendChatFromViewer(const std::string &utf8text, EChatType type, BOOL animate)
{
	LLWString wtext = utf8string_to_wstring(utf8text);
	S32 channel = 0;
	bool is_set = false;
	LLWString out_text = FSNearbyChat::stripChannelNumber(wtext, &channel, &sLastSpecialChatChannel, &is_set);
	// If "/<number>" is not specified, see if a channel has been set in the spinner.
	if (!is_set &&
		gSavedSettings.getBOOL("FSNearbyChatbar") &&
		gSavedSettings.getBOOL("FSShowChatChannel"))
	{
		channel = (S32)(FSFloaterNearbyChat::getInstance()->getChild<LLSpinCtrl>("ChatChannel")->get());
	}

	FSNearbyChat::sendChatFromViewer(wtext, out_text, type, animate, channel);
}

// Exit "chat mode" and do the appropriate focus changes
// static
void FSFloaterNearbyChat::stopChat()
{
	FSFloaterNearbyChat* nearby_chat = LLFloaterReg::getTypedInstance<FSFloaterNearbyChat>("fs_nearby_chat");
	if (nearby_chat)
	{
		nearby_chat->mInputEditor->setFocus(FALSE);
		gAgent.stopTyping();
	}
}

void FSFloaterNearbyChat::updateUnreadMessageNotification(S32 unread_messages, bool muted_history)
{
	BOOL show_muted_history = gSavedSettings.getBOOL("FSShowMutedChatHistory");

	if (muted_history)
	{
		mUnreadMessagesMuted = unread_messages;
		if (!show_muted_history)
		{
			return;
		}
	}
	else
	{
		mUnreadMessages = unread_messages;
		if (show_muted_history)
		{
			return;
		}
	}

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

void FSFloaterNearbyChat::updateShowMutedChatHistory(const LLSD &data)
{
	bool show_muted = data.asBoolean();
	updateUnreadMessageNotification((show_muted ? mUnreadMessagesMuted : mUnreadMessages), show_muted);
}

void FSFloaterNearbyChat::handleMinimized(bool minimized)
{
	if (minimized)
	{
		gConsole->removeSession(LLUUID::null);
	}
	else
	{
		gConsole->addSession(LLUUID::null);
	}
}
