#ifndef KDEEDUGLOSSARY_H
#define KDEEDUGLOSSARY_H
/***************************************************************************
 *   Copyright (C) 2005, 2006 by Carsten Niehaus <cniehaus@kde.org>        *
 *   Copyright (C) 2005 - 2007 by Pino Toscano <pino@kde.org>              *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 ***************************************************************************/

#include "libkdeedu_ui_export.h"

#include <kdialog.h>

class QDomDocument;
class GlossaryItem;

/**
 * @class Glossary
 * @author Carsten Niehaus
 * @author Pino Toscano
 *
 * This class stores all items to be displayed. It also
 * has access-methods to the items
 */
class KDEEDUUI_EXPORT Glossary
{
	public:
		/**
		 * Creates a new glossary and add contents from an XML file.
		 * Use isEmpty() to know if any items were loaded.
		 *
		 * @param url the path of the file to load
		 * @param path the path of the pictures
		 */
		explicit Glossary( const KUrl& url, const QString& path = 0 );

		/**
		 * Creates a new empty glossary
		 */
		Glossary();

		virtual ~Glossary();

		/**
		 * add the item @p item to the glossary
		 */
		void addItem( GlossaryItem* item );

		QList<GlossaryItem*> itemlist()const;

		/**
		 * clear the Glossary
		 */
		void clear();

		/**
		 * does this glossary have items?
		 */
		bool isEmpty() const;

		/**
		 * Every glossary can have a name. It will be
		 * set to @p name
		 */
		void setName( const QString& name );

		/**
		 * @returns the name of the glossary
		 */
		QString name()const;

		/**
		 * sets the internal list of items to @p list
		 */
		void setItemlist( QList<GlossaryItem*> list );

		/**
		 * Every glossaryitem can show pictures. [img src="foo.png]
		 * will look for the file foo.png in the path defined by
		 * @p path
		 */
		void setPicturePath( const QString& path );

		QString picturePath()const;

		/**
		 * defines which picture to use as the background
		 * of the htmlview. The dialog
		 * will use the file specifiec by the @p filename
		 */
		void setBackgroundPicture( const QString& filename );

		/**
		 * @return the picuture used as the background in 
		 * this background
		 */
		QString backgroundPicture()const;

	protected:
		void init( const KUrl& url, const QString& path );
	
	private:
		/**
		 * This methods parses the given XML code. It will extract
		 * the information of the items and return them as a
		 * QList<GlossaryItem*>
		 */
		virtual QList<GlossaryItem*> readItems( QDomDocument &itemDocument );
		
		QString m_backgroundpicture;

		/**
		 * replaces the [img]-pseudocode with valid HTML. The path where
		 * the pictures are stored will be used for pictures
		 */
		void fixImagePath();

		/**
		 * the path in which pictures of the glossary will be searched
		 */
		QString m_picturepath;
		
		/**
		 * Load the layout from an XML file.
		 *
		 * @param doc The QDomDocument which will contain the read XML
		 *            contents.
		 * @param url The path of the file to load
		 *
		 * @return a bool indicating whether the loading of the XML was
		 *         successful or not
		 */
		bool loadLayout( QDomDocument& doc, const KUrl& url );
	
		QList<GlossaryItem*> m_itemlist;
		
		/**
		 * the name of the glossary
		 */
		QString m_name;
};

/**
 * @class GlossaryItem
 * @author Carsten Niehaus
 *
 * A GlossaryItem stores the information of the content of
 * the item and its name. Furthermore, every item can have 
 * a number of pictures or references associated to it.
 * These are stored as QStringLists.
 */
class KDEEDUUI_EXPORT GlossaryItem
{
	public:
		GlossaryItem(){}
		~GlossaryItem(){}

		void setName( const QString& s );

		void setDesc( const QString& s);

		/**
		 * Set the references for the current GlossaryItem to
		 * @p s.
		 * There's no need to sort the list before, as they
		 * will be sorted automatically
		 */
		void setRef( const QStringList& s);
	
		void setPictures( const QString& s );

		QString name() const;
		
		QString desc() const;
		
		QStringList ref() const;
		
		QStringList pictures() const;
		
		/**
		 * @return the formated HTML code for current item.
		 */
		QString toHtml() const;

		/**
		 * This method parses the references.
		 * @return the HTML code with the references as HTML links
		 */
		QString parseReferences() const;

	private:
		QString m_name;
		QString m_desc;
		QStringList m_ref;
		QStringList m_pic;
};

/**
 * @class GlossaryDialog
 * @author Pino Toscano
 * @author Carsten Niehaus
 */
class KDEEDUUI_EXPORT GlossaryDialog : public KDialog
{
	Q_OBJECT

	public:
		/**
		 * Creates a new dialog for a glossary.
		 *
		 * @param parent the parent of the new dialog
		 */
		explicit GlossaryDialog( QWidget *parent = 0 );

		virtual ~GlossaryDialog();

		/**
		 * Add a new glossary.
		 *
		 * @param newgloss the new glossary to add
		 * @param folded whether to fold the various items in subtrees depending on the
		 * first letter of every item
		 */
		void addGlossary( Glossary* newgloss, bool folded = true );

	protected:
		void keyPressEvent(QKeyEvent*);

	private:
		class Private;
		Private * const d;

		Q_PRIVATE_SLOT( d, void itemActivated( QTreeWidgetItem *, int ) )
		Q_PRIVATE_SLOT( d, void displayItem( const KUrl &, const KParts::OpenUrlArguments &, const KParts::BrowserArguments & ) )
};

#endif // KDEEDUGLOSSARY_H