/**
 * @file llpaneltopinfobar.h
 * @brief Coordinates and Parcel Settings information panel definition
 *
 * $LicenseInfo:firstyear=2010&license=viewerlgpl$
 * 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
 * $/LicenseInfo$
 */

#ifndef LLPANELTOPINFOBAR_H_
#define LLPANELTOPINFOBAR_H_

#include "llpanel.h"
#include "llinitdestroyclass.h"

class LLButton;
class LLTextBox;
class LLIconCtrl;
class LLParcelChangeObserver;

class LLPanelTopInfoBar : public LLPanel, public LLSingleton<LLPanelTopInfoBar>, private LLDestroyClass<LLPanelTopInfoBar>
{
	LLSINGLETON(LLPanelTopInfoBar);
	~LLPanelTopInfoBar();
	LOG_CLASS(LLPanelTopInfoBar);

	friend class LLDestroyClass<LLPanelTopInfoBar>;

public:
	typedef boost::signals2::signal<void ()> resize_signal_t;

	/*virtual*/ BOOL postBuild();
	/*virtual*/ void draw();

	/**
	 * Updates location and parcel icons on login complete
	 */
	void handleLoginComplete();

	/**
	 * Called when the top info bar gets shown or hidden
	 */
	void onVisibilityChanged(const LLSD& show);

	boost::signals2::connection setResizeCallback( const resize_signal_t::slot_type& cb );

private:
	class LLParcelChangeObserver;

	friend class LLParcelChangeObserver;

	enum EParcelIcon
	{
		VOICE_ICON = 0,
		FLY_ICON,			// 1
		PUSH_ICON,			// 2
		BUILD_ICON,			// 3
		SCRIPTS_ICON,		// 4
		DAMAGE_ICON,		// 5
		SEE_AVATARS_ICON,	// 6
		ICON_COUNT			// 7 total
	};

	/**
	 * Initializes parcel icons controls. Called from the constructor.
	 */
	void initParcelIcons();

	bool handleRightMouseDown(S32 x, S32 y, MASK mask);

	/**
	 * Handles clicks on the parcel icons.
	 */
	void onParcelIconClick(EParcelIcon icon);

	/**
	 * Handles clicks on the info buttons.
	 */
	void onInfoButtonClicked();

	/**
	 * Called when agent changes the parcel.
	 */
	void onAgentParcelChange();

	/**
	 * Called when context menu item is clicked.
	 */
	void onContextMenuItemClicked(const LLSD::String& userdata);

	/**
	 * Called when user checks/unchecks Show Coordinates menu item.
	 */
	void onNavBarShowParcelPropertiesCtrlChanged();

	/**
	 * Shorthand to call updateParcelInfoText() and updateParcelIcons().
	 */
	void update();

	/**
	 * Updates parcel info text (mParcelInfoText).
	 */
	void updateParcelInfoText();

	/**
	 * Updates parcel icons (mParcelIcon[]).
	 */
	void updateParcelIcons();

	/**
	 * Updates health information (mDamageText).
	 */
	void updateHealth();

	/**
	 * Lays out all parcel icons starting from right edge of the mParcelInfoText + 11px
	 * (see screenshots in EXT-5808 for details).
	 */
	void layoutParcelIcons();

	/**
	 * Lays out a widget. Widget's rect mLeft becomes equal to the 'left' argument.
	 */
	S32 layoutWidget(LLUICtrl* ctrl, S32 left);

	/**
	 * Generates location string and returns it in the loc_str parameter.
	 */
	void buildLocationString(std::string& loc_str, bool show_coords);

	/**
	 * Sets new value to the mParcelInfoText and updates the size of the top bar.
	 */
	void setParcelInfoText(const std::string& new_text);

	/**
	 *  Implementation of LLDestroyClass<T>
	 */
	static void destroyClass()
	{
		if (LLPanelTopInfoBar::instanceExists())
		{
			LLPanelTopInfoBar::getInstance()->setEnabled(FALSE);
		}
	}

	LLButton* 				mInfoBtn;
	LLTextBox* 				mParcelInfoText;
	LLTextBox* 				mDamageText;
	LLIconCtrl*				mParcelIcon[ICON_COUNT];
	LLParcelChangeObserver*	mParcelChangedObserver;

	boost::signals2::connection	mParcelPropsCtrlConnection;
	boost::signals2::connection	mShowCoordsCtrlConnection;
	boost::signals2::connection	mParcelMgrConnection;

	resize_signal_t mResizeSignal;
};

#endif /* LLPANELTOPINFOBAR_H_ */