/** 
 * @file llconversationview.cpp
 * @brief Implementation of conversations list widgets and views
 *
 * $LicenseInfo:firstyear=2009&license=viewerlgpl$
 * 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 "llconversationview.h"
#include "llconversationmodel.h"
#include "llimconversation.h"
#include "llimfloatercontainer.h"

//
// Implementation of conversations list session widgets
//
static LLDefaultChildRegistry::Register<LLConversationViewSession> r_conversation_view_session("conversation_view_session");

LLConversationViewSession::Params::Params() :	
	container()
{}

LLConversationViewSession::LLConversationViewSession(const LLConversationViewSession::Params& p):
	LLFolderViewFolder(p),
	mContainer(p.container),
	mItemPanel(NULL),
	mSessionTitle(NULL)
{
}

BOOL LLConversationViewSession::postBuild()
{
	LLFolderViewItem::postBuild();

	mItemPanel = LLUICtrlFactory::getInstance()->createFromFile<LLPanel>("panel_conversation_list_item.xml", NULL, LLPanel::child_registry_t::instance());

	addChild(mItemPanel);

	mSessionTitle = mItemPanel->getChild<LLTextBox>("conversation_title");

	refresh();

	return TRUE;
}

void LLConversationViewSession::draw()
{
// *TODO Seth PE: remove the code duplicated from LLFolderViewFolder::draw()
// ***** LLFolderViewFolder::draw() code begin *****
	if (mAutoOpenCountdown != 0.f)
	{
		mControlLabelRotation = mAutoOpenCountdown * -90.f;
	}
	else if (isOpen())
	{
		mControlLabelRotation = lerp(mControlLabelRotation, -90.f, LLCriticalDamp::getInterpolant(0.04f));
	}
	else
	{
		mControlLabelRotation = lerp(mControlLabelRotation, 0.f, LLCriticalDamp::getInterpolant(0.025f));
	}
// ***** LLFolderViewFolder::draw() code end *****

// *TODO Seth PE: remove the code duplicated from LLFolderViewItem::draw()
// ***** LLFolderViewItem::draw() code begin *****
	const LLColor4U DEFAULT_WHITE(255, 255, 255);

	static LLUIColor sFgColor = LLUIColorTable::instance().getColor("MenuItemEnabledColor", DEFAULT_WHITE);
	static LLUIColor sHighlightBgColor = LLUIColorTable::instance().getColor("MenuItemHighlightBgColor", DEFAULT_WHITE);
	static LLUIColor sFocusOutlineColor = LLUIColorTable::instance().getColor("InventoryFocusOutlineColor", DEFAULT_WHITE);
	static LLUIColor sMouseOverColor = LLUIColorTable::instance().getColor("InventoryMouseOverColor", DEFAULT_WHITE);

	const LLFolderViewItem::Params& default_params = LLUICtrlFactory::getDefaultParams<LLFolderViewItem>();
	const S32 TOP_PAD = default_params.item_top_pad;
	const S32 FOCUS_LEFT = 1;

	getViewModelItem()->update();

	//--------------------------------------------------------------------------------//
	// Draw open folder arrow
	//
	if (hasVisibleChildren() || getViewModelItem()->hasChildren())
	{
		LLUIImage* arrow_image = default_params.folder_arrow_image;
		gl_draw_scaled_rotated_image(
			mIndentation, getRect().getHeight() - ARROW_SIZE - TEXT_PAD - TOP_PAD,
			ARROW_SIZE, ARROW_SIZE, mControlLabelRotation, arrow_image->getImage(), sFgColor);
	}


	//--------------------------------------------------------------------------------//
	// Draw highlight for selected items
	//
	const BOOL show_context = (getRoot() ? getRoot()->getShowSelectionContext() : FALSE);
	const BOOL filled = show_context || (getRoot() ? getRoot()->getParentPanel()->hasFocus() : FALSE); // If we have keyboard focus, draw selection filled
	const S32 focus_top = getRect().getHeight();
	const S32 focus_bottom = getRect().getHeight() - mItemHeight;
	const bool folder_open = (getRect().getHeight() > mItemHeight + 4);
	if (mIsSelected) // always render "current" item.  Only render other selected items if mShowSingleSelection is FALSE
	{
		gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
		LLColor4 bg_color = sHighlightBgColor;
		if (!mIsCurSelection)
		{
			// do time-based fade of extra objects
			F32 fade_time = (getRoot() ? getRoot()->getSelectionFadeElapsedTime() : 0.0f);
			if (getRoot() && getRoot()->getShowSingleSelection())
			{
				// fading out
				bg_color.mV[VALPHA] = clamp_rescale(fade_time, 0.f, 0.4f, bg_color.mV[VALPHA], 0.f);
			}
			else
			{
				// fading in
				bg_color.mV[VALPHA] = clamp_rescale(fade_time, 0.f, 0.4f, 0.f, bg_color.mV[VALPHA]);
			}
		}
		gl_rect_2d(FOCUS_LEFT,
				   focus_top,
				   getRect().getWidth() - 2,
				   focus_bottom,
				   bg_color, filled);
		if (mIsCurSelection)
		{
			gl_rect_2d(FOCUS_LEFT,
					   focus_top,
					   getRect().getWidth() - 2,
					   focus_bottom,
					   sFocusOutlineColor, FALSE);
		}
		if (folder_open)
		{
			gl_rect_2d(FOCUS_LEFT,
					   focus_bottom + 1, // overlap with bottom edge of above rect
					   getRect().getWidth() - 2,
					   0,
					   sFocusOutlineColor, FALSE);
			if (show_context)
			{
				gl_rect_2d(FOCUS_LEFT,
						   focus_bottom + 1,
						   getRect().getWidth() - 2,
						   0,
						   sHighlightBgColor, TRUE);
			}
		}
	}
	else if (mIsMouseOverTitle)
	{
		gl_rect_2d(FOCUS_LEFT,
			focus_top,
			getRect().getWidth() - 2,
			focus_bottom,
			sMouseOverColor, FALSE);
	}

	//--------------------------------------------------------------------------------//
	// Draw DragNDrop highlight
	//
	if (mDragAndDropTarget)
	{
		gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
		gl_rect_2d(FOCUS_LEFT,
				   focus_top,
				   getRect().getWidth() - 2,
				   focus_bottom,
				   sHighlightBgColor, FALSE);
		if (folder_open)
		{
			gl_rect_2d(FOCUS_LEFT,
					   focus_bottom + 1, // overlap with bottom edge of above rect
					   getRect().getWidth() - 2,
					   0,
					   sHighlightBgColor, FALSE);
		}
		mDragAndDropTarget = FALSE;
	}
// ***** LLFolderViewItem::draw() code end *****

	// draw children if root folder, or any other folder that is open or animating to closed state
	bool draw_children = getRoot() == static_cast<LLFolderViewFolder*>(this)
						 || isOpen()
						 || mCurHeight != mTargetHeight;

	for (folders_t::iterator iter = mFolders.begin();
		iter != mFolders.end();)
	{
		folders_t::iterator fit = iter++;
		(*fit)->setVisible(draw_children);
	}
	for (items_t::iterator iter = mItems.begin();
		iter != mItems.end();)
	{
		items_t::iterator iit = iter++;
		(*iit)->setVisible(draw_children);
	}

	LLView::draw();
}

// virtual
S32 LLConversationViewSession::arrange(S32* width, S32* height)
{
	LLRect rect(getIndentation() + ARROW_SIZE,
				getLocalRect().mTop,
				getLocalRect().mRight,
				getLocalRect().mTop - getItemHeight());
	mItemPanel->setShape(rect);

	return LLFolderViewFolder::arrange(width, height);
}

void LLConversationViewSession::selectItem()
{
	LLFolderViewItem::selectItem();
	
	LLConversationItem* item = dynamic_cast<LLConversationItem*>(mViewModelItem);
	LLFloater* session_floater = LLIMConversation::getConversation(item->getUUID());
	LLMultiFloater* host_floater = session_floater->getHost();
	
	if (host_floater == mContainer)
	{
		// Always expand the message pane if the panel is hosted by the container
		mContainer->collapseMessagesPane(false);
		// Switch to the conversation floater that is being selected
		mContainer->selectFloater(session_floater);
	}
	
	// Set the focus on the selected floater
	session_floater->setFocus(TRUE);
}

void LLConversationViewSession::setVisibleIfDetached(BOOL visible)
{
	// Do this only if the conversation floater has been torn off (i.e. no multi floater host) and is not minimized
	// Note: minimized dockable floaters are brought to front hence unminimized when made visible and we don't want that here
	LLConversationItem* item = dynamic_cast<LLConversationItem*>(mViewModelItem);
	LLFloater* session_floater = LLIMConversation::getConversation(item->getUUID());
	
	if (session_floater && !session_floater->getHost() && !session_floater->isMinimized())
	{
		session_floater->setVisible(visible);
	}
}

LLConversationViewParticipant* LLConversationViewSession::findParticipant(const LLUUID& participant_id)
{
	// This is *not* a general tree parsing algorithm. We search only in the mItems list
	// assuming there is no mFolders which makes sense for sessions (sessions don't contain
	// sessions).
	LLConversationViewParticipant* participant = NULL;
	items_t::const_iterator iter;
	for (iter = getItemsBegin(); iter != getItemsEnd(); iter++)
	{
		participant = dynamic_cast<LLConversationViewParticipant*>(*iter);
		if (participant->hasSameValue(participant_id))
		{
			break;
		}
	}
	return (iter == getItemsEnd() ? NULL : participant);
}

void LLConversationViewSession::refresh()
{
	// Refresh the session view from its model data
	LLConversationItem* vmi = dynamic_cast<LLConversationItem*>(getViewModelItem());
	vmi->resetRefresh();
	
	if (mSessionTitle)
	{
		mSessionTitle->setText(vmi->getDisplayName());
	}

	// Note: for the moment, all that needs to be done is done by LLFolderViewItem::refresh()
	
	// Do the regular upstream refresh
	LLFolderViewFolder::refresh();
}

//
// Implementation of conversations list participant (avatar) widgets
//

LLConversationViewParticipant::Params::Params() :	
	participant_id()
{}

LLConversationViewParticipant::LLConversationViewParticipant( const LLConversationViewParticipant::Params& p ):
	LLFolderViewItem(p),
	mUUID(p.participant_id)
{
}

void LLConversationViewParticipant::refresh()
{
	// Refresh the participant view from its model data
	LLConversationItem* vmi = dynamic_cast<LLConversationItem*>(getViewModelItem());
	vmi->resetRefresh();
	
	// Note: for the moment, all that needs to be done is done by LLFolderViewItem::refresh()
	
	// Do the regular upstream refresh
	LLFolderViewItem::refresh();
}

// EOF