// Ryzom - MMORPG Framework <http://dev.ryzom.com/projects/ryzom/>
// Copyright (C) 2010  Winch Gate Property Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.



#ifndef NL_GROUP_PARAGRAPH_H
#define NL_GROUP_PARAGRAPH_H

#include "nel/misc/types_nl.h"
#include "group_frame.h"
#include "view_text.h"
#include "view_link.h"
#include "ctrl_button.h"

class CCtrlLink : public CCtrlButton
{
public:
	CCtrlLink (const TCtorParam &param) : CCtrlButton(param)
	{}
};

// ----------------------------------------------------------------------------
class CGroupParagraph : public CInterfaceGroup
{
public:
	enum EAlign
	{
		Bottom = 0,
		Top,
		Left,
		Right
	};

	///constructor
	CGroupParagraph(const TCtorParam &param);

	// dtor
	~CGroupParagraph();

	/**
	* add a child element to the group at the last position
	* 'order' of the element is set to the last order + 1
	* \param child : pointer to the child element
	*/
	void addChild (CViewBase* child, bool deleteOnRemove=true);

	/**
	* add a link element to the group at the last position
	* \param child : pointer to the child element
	*/
	void addChildLink (CViewLink* child, bool deleteOnRemove=true);

	/** add a child before the element at the given index.
	  * 'order' of the element is set to 0
	  * \return true if there was enough room for that child
	  */
	bool addChildAtIndex(CViewBase *child, uint index, bool deleteOnRemove = true);

	/**
	* add a text child element to the group, using the text template
	* \param line : text to be added
	* \param color : text color
	*/
	void addTextChild (const ucstring& line,const NLMISC::CRGBA &textColor, bool multiLine = true);

	/**
	* add a text child element to the group, using the text template
	* \param line : text to be added
	*/
	void addTextChild (const ucstring& line, bool multiLine = true);

	/// Same as adding a text child but the text will be taken from the string manager
	void addTextChildID (uint32 id, bool multiLine = true);
	// the same, but with id taken from the database
	void addTextChildID (const std::string &dbPath, bool multiLine = true);

protected:

	void delChild (CViewBase* child);

	void delChild(uint index);

public:

	CViewBase *getChild(uint index) const { return _Elements[index].Element; }

	void deleteAllChildren();

	// void removeHead();

	// Get the number of children
	uint getNumChildren() const { return (uint)_Elements.size(); }

	// Get the number of active children
	uint getNumActiveChildren() const;

	/**
	* set the template that will be used to add text;
	* \templ : a CViewText object. Only its font size, color and shadow are required.
	*/
	void setTextTemplate(const CViewText& templ);

	/**
	* set the template that will be used to add text;
	* \templ : a CViewText object. Only its font size, color and shadow are required.
	*/
	CViewText * getTextTemplatePtr()
	{
		return &_Templ;
	}

	/**
	 * parse the element and initalize it
	 * \paral cur : pointer to the node describing this element
	 * \param parentGroup : the parent group of this element
	 * \return true if success
	 */
	virtual bool parse (xmlNodePtr cur, CInterfaceGroup * parentGroup);
	//virtual uint32 getMemory();
	/**
	 * init  or reset the children element coords. Orverloaded from CInterfaceGroup because we begin with the last inserted element here
	 */
	virtual void updateCoords();

	virtual void checkCoords();

	virtual void draw();

	virtual bool handleEvent (const NLGUI::CEventDescriptor& eventDesc);

	virtual void clearViews();
	virtual void clearControls();
	virtual void clearGroups();

	void setSpace (sint32 s) { _Space = s; }

	virtual CInterfaceElement* getElement (const std::string &id)
	{ return CInterfaceGroup::getElement (id); }

	sint32 getNbElement() { return (sint32)_Elements.size(); }
	sint32 getSpace() { return _Space; }

	void	forceSizeW (sint32 newSizeW);
	void	forceSizeH (sint32 newSizeH);

	void	setMinW(sint32 minW);
	void	setMinH(sint32 minH);
	sint32	getMinW() const {return _MinW;}
	sint32	getMinH() const {return _MinH;}

	// set the rank for the element at the given index (used to reinsert container after they have been turned into popups)
	void setOrder(uint index, uint order) { _Elements[index].Order = order; }
	uint getOrder(uint index) const { return _Elements[index].Order; }

	// get element of index or -1 if not found
	sint32 getElementIndex(CViewBase* child) const;

	// swap 2 entries in the list (and also their orders)
	// void   swapChildren(uint index1, uint index2);

	// deleteOnRemove flag
	void   setDelOnRemove(uint index, bool delOnRemove);
	bool   getDelOnRemove(uint index) const;

	void	setTopSpace(uint topSpace)
	{
		_TopSpace = topSpace;
		setResizeFromChildHMargin(topSpace);
		invalidateContent();
	};

	uint	getTopSpace()
	{
		return _TopSpace;
	};

	void	setIndent(uint indent) { _Indent = indent; }

	void	setFirstViewIndent(sint indent)
	{
		_FirstViewIndentView = indent;
		invalidateContent();
	}

	// Set the HTML group used for links
	void	setBrowseGroup (CInterfaceElement	*group)
	{
		_BrowseGroup = group;
	}

	/// \from CInterfaceElement
	void onInvalidateContent();
	sint32	getMaxUsedW() const;
	sint32	getMinUsedW() const;

protected:

	// Content validated
	bool	_ContentValidated;

	// Where to add next element
	EAlign	_AddElt;

	// Where to align the newly added element
	EAlign	_Align;

	// Space between two elements in pixel
	sint32	_Space;

	// Text template
	CViewText _Templ;

	// Current id of the view
	sint32	_IdCounter;

	// Do we have a color under the element pointed by the mouse
	bool _Over;

	// If over is true so we have a color
	NLMISC::CRGBA _OverColor;

	// Current elt over the pointer
	sint32 _OverElt;

	struct CElementInfo
	{
		uint				Order; // Used to sort the window by their insertion order.
		                           // This is used to put back a window at the right place if it was turned into a popup.
		CViewBase			*Element;
		bool				EltDeleteOnRemove;
	};
	friend struct CRemoveViewPred;
	friend struct CRemoveCtrlPred;
	friend struct CRemoveGroupPred;

	// The list is forced to be at least this size in updateCoords().
	sint32		_MinW;
	sint32		_MinH;


	// To conserve elements in the order they have been added
	// (the element drawn are stored in _views, _contrlos or _childrengroups of cinterfacegroup
	std::vector<CElementInfo> _Elements;

	// Last parent width
	sint32		_LastW;

	// Top space
	uint		_TopSpace;

	// Indent
	uint		_Indent;	// Left margin
	sint		_FirstViewIndentView;	// Additionnal left margin for the first view

	// A link structure
	class CLink
	{
	public:

		CLink(CViewLink *link);

		// The link view
		CViewLink		*Link;

		// The three control button
		CCtrlLink		*CtrlLink[3];
	};

	// The links
	std::vector<CLink>	_Links;

	// The HTML group used
	CInterfaceElement	*_BrowseGroup;

private:

	// void setHSGroup (CViewBase *child, EAlign addElt, EAlign align);
	// void setHSParent(CViewBase *view, EAlign addElt, EAlign align, uint space);

};


#endif // NL_GROUP_PARAGRAPH_H

/* End of group_paragraph.h */