/**
 * @file llpaneltopinfobar.cpp
 * @brief Coordinates and Parcel Settings information panel definition
 *
 * $LicenseInfo:firstyear=2010&license=viewergpl$
 *
 * Copyright (c) 2010, Linden Research, Inc.
 *
 * Second Life Viewer Source Code
 * The source code in this file ("Source Code") is provided by Linden Lab
 * to you under the terms of the GNU General Public License, version 2.0
 * ("GPL"), unless you have obtained a separate licensing agreement
 * ("Other License"), formally executed by you and Linden Lab.  Terms of
 * the GPL can be found in doc/GPL-license.txt in this distribution, or
 * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
 *
 * There are special exceptions to the terms and conditions of the GPL as
 * it is applied to this Source Code. View the full text of the exception
 * in the file doc/FLOSS-exception.txt in this software distribution, or
 * online at
 * http://secondlifegrid.net/programs/open_source/licensing/flossexception
 *
 * By copying, modifying or distributing this software, you acknowledge
 * that you have read and understood your obligations described above,
 * and agree to abide by those obligations.
 *
 * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
 * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
 * COMPLETENESS OR PERFORMANCE.
 * $/LicenseInfo$
 */

#include "llviewerprecompiledheaders.h"

#include "llpaneltopinfobar.h"

#include "llagent.h"
#include "llagentui.h"
#include "llclipboard.h"
#include "lllandmarkactions.h"
#include "lllocationinputctrl.h"
#include "llnotificationsutil.h"
#include "llparcel.h"
#include "llsidetray.h"
#include "llslurl.h"
#include "llstatusbar.h"
#include "llviewercontrol.h"
#include "llviewerinventory.h"
#include "llviewermenu.h"
#include "llviewerparcelmgr.h"
#include "llviewerregion.h"

class LLPanelTopInfoBar::LLParcelChangeObserver : public LLParcelObserver
{
public:
	LLParcelChangeObserver(LLPanelTopInfoBar* topInfoBar) : mTopInfoBar(topInfoBar) {}

private:
	/*virtual*/ void changed()
	{
		if (mTopInfoBar)
		{
			mTopInfoBar->updateParcelIcons();
		}
	}

	LLPanelTopInfoBar* mTopInfoBar;
};

LLPanelTopInfoBar::LLPanelTopInfoBar(): mParcelChangedObserver(0)
{
	LLUICtrl::CommitCallbackRegistry::currentRegistrar()
			.add("TopInfoBar.Action", boost::bind(&LLPanelTopInfoBar::onContextMenuItemClicked, this, _2));

	buildFromFile( "panel_topinfo_bar.xml");
}

LLPanelTopInfoBar::~LLPanelTopInfoBar()
{
	if (mParcelChangedObserver)
	{
		LLViewerParcelMgr::getInstance()->removeObserver(mParcelChangedObserver);
		delete mParcelChangedObserver;
	}

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

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

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

void LLPanelTopInfoBar::initParcelIcons()
{
	mParcelIcon[VOICE_ICON] = getChild<LLIconCtrl>("voice_icon");
	mParcelIcon[FLY_ICON] = getChild<LLIconCtrl>("fly_icon");
	mParcelIcon[PUSH_ICON] = getChild<LLIconCtrl>("push_icon");
	mParcelIcon[BUILD_ICON] = getChild<LLIconCtrl>("build_icon");
	mParcelIcon[SCRIPTS_ICON] = getChild<LLIconCtrl>("scripts_icon");
	mParcelIcon[DAMAGE_ICON] = getChild<LLIconCtrl>("damage_icon");

	mParcelIcon[VOICE_ICON]->setMouseDownCallback(boost::bind(&LLPanelTopInfoBar::onParcelIconClick, this, VOICE_ICON));
	mParcelIcon[FLY_ICON]->setMouseDownCallback(boost::bind(&LLPanelTopInfoBar::onParcelIconClick, this, FLY_ICON));
	mParcelIcon[PUSH_ICON]->setMouseDownCallback(boost::bind(&LLPanelTopInfoBar::onParcelIconClick, this, PUSH_ICON));
	mParcelIcon[BUILD_ICON]->setMouseDownCallback(boost::bind(&LLPanelTopInfoBar::onParcelIconClick, this, BUILD_ICON));
	mParcelIcon[SCRIPTS_ICON]->setMouseDownCallback(boost::bind(&LLPanelTopInfoBar::onParcelIconClick, this, SCRIPTS_ICON));
	mParcelIcon[DAMAGE_ICON]->setMouseDownCallback(boost::bind(&LLPanelTopInfoBar::onParcelIconClick, this, DAMAGE_ICON));

	mDamageText->setText(LLStringExplicit("100%"));
}

void LLPanelTopInfoBar::handleLoginComplete()
{
	// An agent parcel update hasn't occurred yet, so
	// we have to manually set location and the icons.
	update();
}

BOOL LLPanelTopInfoBar::handleRightMouseDown(S32 x, S32 y, MASK mask)
{
	show_topinfobar_context_menu(this, x, y);
	return TRUE;
}

BOOL LLPanelTopInfoBar::postBuild()
{
	mInfoBtn = getChild<LLButton>("place_info_btn");
	mInfoBtn->setClickedCallback(boost::bind(&LLPanelTopInfoBar::onInfoButtonClicked, this));

	mParcelInfoText = getChild<LLTextBox>("parcel_info_text");
	mDamageText = getChild<LLTextBox>("damage_text");

	initParcelIcons();

	mParcelChangedObserver = new LLParcelChangeObserver(this);
	LLViewerParcelMgr::getInstance()->addObserver(mParcelChangedObserver);

	// Connecting signal for updating parcel icons on "Show Parcel Properties" setting change.
	LLControlVariable* ctrl = gSavedSettings.getControl("NavBarShowParcelProperties").get();
	if (ctrl)
	{
		mParcelPropsCtrlConnection = ctrl->getSignal()->connect(boost::bind(&LLPanelTopInfoBar::updateParcelIcons, this));
	}

	// Connecting signal for updating parcel text on "Show Coordinates" setting change.
	ctrl = gSavedSettings.getControl("NavBarShowCoordinates").get();
	if (ctrl)
	{
		mShowCoordsCtrlConnection = ctrl->getSignal()->connect(boost::bind(&LLPanelTopInfoBar::onNavBarShowParcelPropertiesCtrlChanged, this));
	}

	mParcelMgrConnection = LLViewerParcelMgr::getInstance()->addAgentParcelChangedCallback(
			boost::bind(&LLPanelTopInfoBar::onAgentParcelChange, this));

	setVisibleCallback(boost::bind(&LLPanelTopInfoBar::onVisibilityChange, this, _2));

	return TRUE;
}

void LLPanelTopInfoBar::onNavBarShowParcelPropertiesCtrlChanged()
{
	std::string new_text;

	// don't need to have separate show_coords variable; if user requested the coords to be shown
	// they will be added during the next call to the draw() method.
	buildLocationString(new_text, false);
	setParcelInfoText(new_text);
}

// when panel is shown, all minimized floaters should be shifted downwards to prevent overlapping of
// PanelTopInfoBar. See EXT-7951.
void LLPanelTopInfoBar::onVisibilityChange(const LLSD& show)
{
	// this height is used as a vertical offset for ALREADY MINIMIZED floaters
	// when PanelTopInfoBar visibility changes
	S32 height = getRect().getHeight();

	// this vertical offset is used for a start minimize position of floaters that
	// are NOT MIMIMIZED YET
	S32 minimize_pos_offset = 0;

	if (show.asBoolean())
	{
		height = minimize_pos_offset = -height;
	}

	gFloaterView->shiftFloaters(0, height);
	gFloaterView->setMinimizePositionVerticalOffset(minimize_pos_offset);
}

void LLPanelTopInfoBar::draw()
{
	updateParcelInfoText();
	updateHealth();

	LLPanel::draw();
}

void LLPanelTopInfoBar::buildLocationString(std::string& loc_str, bool show_coords)
{
	LLAgentUI::ELocationFormat format =
		(show_coords ? LLAgentUI::LOCATION_FORMAT_FULL : LLAgentUI::LOCATION_FORMAT_NO_COORDS);

	if (!LLAgentUI::buildLocationString(loc_str, format))
	{
		loc_str = "???";
	}
}

void LLPanelTopInfoBar::setParcelInfoText(const std::string& new_text)
{
	const LLFontGL* font = mParcelInfoText->getDefaultFont();
	S32 new_text_width = font->getWidth(new_text);

	mParcelInfoText->setText(new_text);

	LLRect rect = mParcelInfoText->getRect();
	rect.setOriginAndSize(rect.mLeft, rect.mBottom, new_text_width, rect.getHeight());

	mParcelInfoText->reshape(rect.getWidth(), rect.getHeight(), TRUE);
	mParcelInfoText->setRect(rect);
	layoutParcelIcons();
}

void LLPanelTopInfoBar::update()
{
	std::string new_text;

	// don't need to have separate show_coords variable; if user requested the coords to be shown
	// they will be added during the next call to the draw() method.
	buildLocationString(new_text, false);
	setParcelInfoText(new_text);

	updateParcelIcons();
}

void LLPanelTopInfoBar::updateParcelInfoText()
{
	static LLUICachedControl<bool> show_coords("NavBarShowCoordinates", false);

	if (show_coords)
	{
		std::string new_text;

		buildLocationString(new_text, show_coords);
		setParcelInfoText(new_text);
	}
}

void LLPanelTopInfoBar::updateParcelIcons()
{
	LLViewerParcelMgr* vpm = LLViewerParcelMgr::getInstance();

	LLViewerRegion* agent_region = gAgent.getRegion();
	LLParcel* agent_parcel = vpm->getAgentParcel();
	if (!agent_region || !agent_parcel)
		return;

	if (gSavedSettings.getBOOL("NavBarShowParcelProperties"))
	{
		LLParcel* current_parcel;
		LLViewerRegion* selection_region = vpm->getSelectionRegion();
		LLParcel* selected_parcel = vpm->getParcelSelection()->getParcel();

		// If agent is in selected parcel we use its properties because
		// they are updated more often by LLViewerParcelMgr than agent parcel properties.
		// See LLViewerParcelMgr::processParcelProperties().
		// This is needed to reflect parcel restrictions changes without having to leave
		// the parcel and then enter it again. See EXT-2987
		if (selected_parcel && selected_parcel->getLocalID() == agent_parcel->getLocalID()
				&& selection_region == agent_region)
		{
			current_parcel = selected_parcel;
		}
		else
		{
			current_parcel = agent_parcel;
		}

		bool allow_voice	= vpm->allowAgentVoice(agent_region, current_parcel);
		bool allow_fly		= vpm->allowAgentFly(agent_region, current_parcel);
		bool allow_push		= vpm->allowAgentPush(agent_region, current_parcel);
		bool allow_build	= vpm->allowAgentBuild(current_parcel); // true when anyone is allowed to build. See EXT-4610.
		bool allow_scripts	= vpm->allowAgentScripts(agent_region, current_parcel);
		bool allow_damage	= vpm->allowAgentDamage(agent_region, current_parcel);

		// Most icons are "block this ability"
		mParcelIcon[VOICE_ICON]->setVisible(   !allow_voice );
		mParcelIcon[FLY_ICON]->setVisible(     !allow_fly );
		mParcelIcon[PUSH_ICON]->setVisible(    !allow_push );
		mParcelIcon[BUILD_ICON]->setVisible(   !allow_build );
		mParcelIcon[SCRIPTS_ICON]->setVisible( !allow_scripts );
		mParcelIcon[DAMAGE_ICON]->setVisible(  allow_damage );
		mDamageText->setVisible(allow_damage);

		layoutParcelIcons();
	}
	else
	{
		for (S32 i = 0; i < ICON_COUNT; ++i)
		{
			mParcelIcon[i]->setVisible(false);
		}
		mDamageText->setVisible(false);
	}
}

void LLPanelTopInfoBar::updateHealth()
{
	static LLUICachedControl<bool> show_icons("NavBarShowParcelProperties", false);

	// *FIXME: Status bar owns health information, should be in agent
	if (show_icons && gStatusBar)
	{
		static S32 last_health = -1;
		S32 health = gStatusBar->getHealth();
		if (health != last_health)
		{
			std::string text = llformat("%d%%", health);
			mDamageText->setText(text);
			last_health = health;
		}
	}
}

void LLPanelTopInfoBar::layoutParcelIcons()
{
	// TODO: remove hard-coded values and read them as xml parameters
	static const int FIRST_ICON_HPAD = 32;
	static const int LAST_ICON_HPAD = 11;

	S32 left = mParcelInfoText->getRect().mRight + FIRST_ICON_HPAD;

	left = layoutWidget(mDamageText, left);

	for (int i = ICON_COUNT - 1; i >= 0; --i)
	{
		left = layoutWidget(mParcelIcon[i], left);
	}

	LLRect rect = getRect();
	rect.set(rect.mLeft, rect.mTop, left + LAST_ICON_HPAD, rect.mBottom);
	setRect(rect);
}

S32 LLPanelTopInfoBar::layoutWidget(LLUICtrl* ctrl, S32 left)
{
	// TODO: remove hard-coded values and read them as xml parameters
	static const int ICON_HPAD = 2;

	if (ctrl->getVisible())
	{
		LLRect rect = ctrl->getRect();
		rect.mRight = left + rect.getWidth();
		rect.mLeft = left;

		ctrl->setRect(rect);
		left += rect.getWidth() + ICON_HPAD;
	}

	return left;
}

void LLPanelTopInfoBar::onParcelIconClick(EParcelIcon icon)
{
	switch (icon)
	{
	case VOICE_ICON:
		LLNotificationsUtil::add("NoVoice");
		break;
	case FLY_ICON:
		LLNotificationsUtil::add("NoFly");
		break;
	case PUSH_ICON:
		LLNotificationsUtil::add("PushRestricted");
		break;
	case BUILD_ICON:
		LLNotificationsUtil::add("NoBuild");
		break;
	case SCRIPTS_ICON:
	{
		LLViewerRegion* region = gAgent.getRegion();
		if(region && region->getRegionFlags() & REGION_FLAGS_ESTATE_SKIP_SCRIPTS)
		{
			LLNotificationsUtil::add("ScriptsStopped");
		}
		else if(region && region->getRegionFlags() & REGION_FLAGS_SKIP_SCRIPTS)
		{
			LLNotificationsUtil::add("ScriptsNotRunning");
		}
		else
		{
			LLNotificationsUtil::add("NoOutsideScripts");
		}
		break;
	}
	case DAMAGE_ICON:
		LLNotificationsUtil::add("NotSafe");
		break;
	case ICON_COUNT:
		break;
	// no default to get compiler warning when a new icon gets added
	}
}

void LLPanelTopInfoBar::onAgentParcelChange()
{
	update();
}

void LLPanelTopInfoBar::onContextMenuItemClicked(const LLSD::String& item)
{
	if (item == "landmark")
	{
		LLViewerInventoryItem* landmark = LLLandmarkActions::findLandmarkForAgentPos();

		if(landmark == NULL)
		{
			LLSideTray::getInstance()->showPanel("panel_places", LLSD().with("type", "create_landmark"));
		}
		else
		{
			LLSideTray::getInstance()->showPanel("panel_places",
					LLSD().with("type", "landmark").with("id",landmark->getUUID()));
		}
	}
	else if (item == "copy")
	{
		LLSLURL slurl;
		LLAgentUI::buildSLURL(slurl, false);
		LLUIString location_str(slurl.getSLURLString());

		gClipboard.copyFromString(location_str);
	}
}

void LLPanelTopInfoBar::onInfoButtonClicked()
{
	LLSideTray::getInstance()->showPanel("panel_places", LLSD().with("type", "agent"));
}