/** 
 * @file llimfloatercontainer.cpp
 * @brief Multifloater containing active IM sessions in separate tab container tabs
 *
 * $LicenseInfo:firstyear=2009&license=viewerlgpl$
 * 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
 * $/LicenseInfo$
 */


#include "llviewerprecompiledheaders.h"

#include "llimfloatercontainer.h"

#include "llfloaterreg.h"
#include "lllayoutstack.h"
#include "llnearbychat.h"

#include "llagent.h"
#include "llavatariconctrl.h"
#include "llgroupiconctrl.h"
#include "llimview.h"
#include "lltransientfloatermgr.h"
#include "llviewercontrol.h"

//
// LLIMFloaterContainer
//
LLIMFloaterContainer::LLIMFloaterContainer(const LLSD& seed)
:	LLMultiFloater(seed)
	,mExpandCollapseBtn(NULL)
{
	mAutoResize = FALSE;
	LLTransientFloaterMgr::getInstance()->addControlView(LLTransientFloaterMgr::IM, this);
}

LLIMFloaterContainer::~LLIMFloaterContainer()
{
	mNewMessageConnection.disconnect();
	LLTransientFloaterMgr::getInstance()->removeControlView(LLTransientFloaterMgr::IM, this);

	gSavedPerAccountSettings.setBOOL("ConversationsListPaneCollapsed", mConversationsPane->isCollapsed());
	gSavedPerAccountSettings.setBOOL("ConversationsMessagePaneCollapsed", mMessagesPane->isCollapsed());
}

BOOL LLIMFloaterContainer::postBuild()
{
	mNewMessageConnection = LLIMModel::instance().mNewMsgSignal.connect(boost::bind(&LLIMFloaterContainer::onNewMessageReceived, this, _1));
	// Do not call base postBuild to not connect to mCloseSignal to not close all floaters via Close button
	// mTabContainer will be initialized in LLMultiFloater::addChild()
	
	setTabContainer(getChild<LLTabContainer>("im_box_tab_container"));

	mConversationsStack = getChild<LLLayoutStack>("conversations_stack");
	mConversationsPane = getChild<LLLayoutPanel>("conversations_layout_panel");
	mMessagesPane = getChild<LLLayoutPanel>("messages_layout_panel");

	mExpandCollapseBtn = getChild<LLButton>("expand_collapse_btn");
	mExpandCollapseBtn->setClickedCallback(boost::bind(&LLIMFloaterContainer::onExpandCollapseButtonClicked, this));

	collapseMessagesPane(gSavedPerAccountSettings.getBOOL("ConversationsMessagePaneCollapsed"));
	collapseConversationsPane(gSavedPerAccountSettings.getBOOL("ConversationsListPaneCollapsed"));

	return TRUE;
}

void LLIMFloaterContainer::onOpen(const LLSD& key)
{
	LLMultiFloater::onOpen(key);
/*
	if (key.isDefined())
	{
		LLIMFloater* im_floater = LLIMFloater::findInstance(key.asUUID());
		if (im_floater)
		{
			im_floater->openFloater();
		}
	}
*/
}

// virtual
void LLIMFloaterContainer::addFloater(LLFloater* floaterp, 
									BOOL select_added_floater, 
									LLTabContainer::eInsertionPoint insertion_point)
{
	if(!floaterp) return;

	// already here
	if (floaterp->getHost() == this)
	{
		openFloater(floaterp->getKey());
		return;
	}

	LLMultiFloater::addFloater(floaterp, select_added_floater, insertion_point);

	LLView* floater_contents = floaterp->getChild<LLView>("contents_view");

	// we don't show the header when the floater is hosted,
	// so reshape floater contents to occupy the header space
	floater_contents->setShape(floaterp->getRect());

	LLUUID session_id = floaterp->getKey();

	LLIconCtrl* icon = 0;

	if(gAgent.isInGroup(session_id, TRUE))
	{
		LLGroupIconCtrl::Params icon_params;
		icon_params.group_id = session_id;
		icon = LLUICtrlFactory::instance().create<LLGroupIconCtrl>(icon_params);

		mSessions[session_id] = floaterp;
		floaterp->mCloseSignal.connect(boost::bind(&LLIMFloaterContainer::onCloseFloater, this, session_id));
	}
	else
	{
		LLUUID avatar_id = LLIMModel::getInstance()->getOtherParticipantID(session_id);

		LLAvatarIconCtrl::Params icon_params;
		icon_params.avatar_id = avatar_id;
		icon = LLUICtrlFactory::instance().create<LLAvatarIconCtrl>(icon_params);

		mSessions[session_id] = floaterp;
		floaterp->mCloseSignal.connect(boost::bind(&LLIMFloaterContainer::onCloseFloater, this, session_id));
	}
	mTabContainer->setTabImage(floaterp, icon);
}

// virtual
void LLIMFloaterContainer::removeFloater(LLFloater* floaterp)
{
	LLMultiFloater::removeFloater(floaterp);

	LLRect contents_rect = floaterp->getRect();

	// reduce the floater contents height by header height
	contents_rect.mTop -= floaterp->getHeaderHeight();

	LLView* floater_contents = floaterp->getChild<LLView>("contents_view");
	floater_contents->setShape(contents_rect);
}

void LLIMFloaterContainer::onCloseFloater(LLUUID& id)
{
	mSessions.erase(id);
}

// virtual
void LLIMFloaterContainer::computeResizeLimits(S32& new_min_width, S32& new_min_height)
{
	bool is_left_pane_expanded = !mConversationsPane->isCollapsed();
	bool is_right_pane_expanded = !mMessagesPane->isCollapsed();

	S32 conversations_pane_min_dim = mConversationsPane->getMinDim();

	if (is_right_pane_expanded)
	{
		S32 conversations_pane_width =
				(is_left_pane_expanded ? gSavedPerAccountSettings.getS32("ConversationsListPaneWidth") : conversations_pane_min_dim);

		// possibly increase minimum size constraint due to children's minimums.
		for (S32 tab_idx = 0; tab_idx < mTabContainer->getTabCount(); ++tab_idx)
		{
			LLFloater* floaterp = dynamic_cast<LLFloater*>(mTabContainer->getPanelByIndex(tab_idx));
			if (floaterp)
			{
				new_min_width = llmax(new_min_width,
						floaterp->getMinWidth() + conversations_pane_width + LLPANEL_BORDER_WIDTH * 2);
				new_min_height = llmax(new_min_height, floaterp->getMinHeight());
			}
		}
	}
	else
	{
		new_min_width = conversations_pane_min_dim;
	}
}

void LLIMFloaterContainer::onNewMessageReceived(const LLSD& data)
{
	LLUUID session_id = data["session_id"].asUUID();
	LLFloater* floaterp = get_ptr_in_map(mSessions, session_id);
	LLFloater* current_floater = LLMultiFloater::getActiveFloater();

	if(floaterp && current_floater && floaterp != current_floater)
	{
		if(LLMultiFloater::isFloaterFlashing(floaterp))
			LLMultiFloater::setFloaterFlashing(floaterp, FALSE);
		LLMultiFloater::setFloaterFlashing(floaterp, TRUE);
	}
}

void LLIMFloaterContainer::onExpandCollapseButtonClicked()
{
	if (mConversationsPane->isCollapsed() && mMessagesPane->isCollapsed()
			&& gSavedPerAccountSettings.getBOOL("ConversationsExpandMessagePaneFirst"))
	{
		// Expand the messages pane from ultra minimized state
		// if it was collapsed last in order.
		collapseMessagesPane(false);
	}
	else
	{
		collapseConversationsPane(!mConversationsPane->isCollapsed());
	}
}

LLIMFloaterContainer* LLIMFloaterContainer::findInstance()
{
	return LLFloaterReg::findTypedInstance<LLIMFloaterContainer>("im_container");
}

LLIMFloaterContainer* LLIMFloaterContainer::getInstance()
{
	return LLFloaterReg::getTypedInstance<LLIMFloaterContainer>("im_container");
}

void LLIMFloaterContainer::setMinimized(BOOL b)
{
	if (isMinimized() == b) return;
	
	LLMultiFloater::setMinimized(b);
	// Hide minimized floater (see EXT-5315)
	setVisible(!b);

	if (isMinimized()) return;

	if (getActiveFloater())
	{
		getActiveFloater()->setVisible(TRUE);
	}
}

void LLIMFloaterContainer::collapseMessagesPane(bool collapse)
{
	if (mMessagesPane->isCollapsed() == collapse)
	{
		return;
	}

	if (collapse)
	{
		// Save the messages pane width before collapsing it.
		gSavedPerAccountSettings.setS32("ConversationsMessagePaneWidth", mMessagesPane->getRect().getWidth());

		// Save the order in which the panels are closed to reverse user's last action.
		gSavedPerAccountSettings.setBOOL("ConversationsExpandMessagePaneFirst", mConversationsPane->isCollapsed());
	}

	// Show/hide the messages pane.
	mConversationsStack->collapsePanel(mMessagesPane, collapse);

	updateState(collapse, gSavedPerAccountSettings.getS32("ConversationsMessagePaneWidth"));
}

void LLIMFloaterContainer::collapseConversationsPane(bool collapse)
{
	if (mConversationsPane->isCollapsed() == collapse)
	{
		return;
	}

	LLView* button_panel = getChild<LLView>("conversations_pane_buttons_expanded");
	button_panel->setVisible(!collapse);
	mExpandCollapseBtn->setImageOverlay(getString(collapse ? "expand_icon" : "collapse_icon"));

	if (collapse)
	{
		// Save the conversations pane width before collapsing it.
		gSavedPerAccountSettings.setS32("ConversationsListPaneWidth", mConversationsPane->getRect().getWidth());

		// Save the order in which the panels are closed to reverse user's last action.
		gSavedPerAccountSettings.setBOOL("ConversationsExpandMessagePaneFirst", !mMessagesPane->isCollapsed());
	}

	mConversationsStack->collapsePanel(mConversationsPane, collapse);

	S32 collapsed_width = mConversationsPane->getMinDim();
	updateState(collapse, gSavedPerAccountSettings.getS32("ConversationsListPaneWidth") - collapsed_width);
}

void LLIMFloaterContainer::updateState(bool collapse, S32 delta_width)
{
	LLRect floater_rect = getRect();
	floater_rect.mRight += ((collapse ? -1 : 1) * delta_width);
	setShape(floater_rect);

	updateResizeLimits();

	bool is_left_pane_expanded = !mConversationsPane->isCollapsed();
	bool is_right_pane_expanded = !mMessagesPane->isCollapsed();

	setCanResize(is_left_pane_expanded || is_right_pane_expanded);
	setCanMinimize(is_left_pane_expanded || is_right_pane_expanded);
}

// EOF