/*
 *  Kchmviewer - a CHM and EPUB file viewer with broad language support
 *  Copyright (C) 2004-2014 George Yunaev, gyunaev@ulduzsoft.com
 *
 *  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 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <QString>
#include <QUrl>
#include <QXmlAttributes>

#include "ebook_epub.h"
#include "helperxmlhandler_epubtoc.h"


HelperXmlHandler_EpubTOC::HelperXmlHandler_EpubTOC( EBook_EPUB* epub )
{
	m_epub = epub;
	m_inNavMap = false;
	m_inText = false;
	m_indent = 0;
}

bool HelperXmlHandler_EpubTOC::startElement( const QString&, const QString& localName, const QString&, const QXmlAttributes& atts )
{
//	qDebug() << "startElement " << " " << localName;

//	for ( int i = 0; i < atts.count(); i++ )
//		qDebug() << "    " << atts.localName(i) << " " << atts.value(i);

	if ( localName == "navMap" )
	{
		m_inNavMap = true;
		return true;
	}

	if ( !m_inNavMap )
		return true;

	if ( localName == "navPoint" )
		m_indent++;

	if ( localName == "text" )
		m_inText = true;

	if ( localName == "content" )
	{
		int idx = atts.index( "src" );

		if ( idx == -1 )
			return false;

		m_lastId = atts.value( idx );
		checkNewTocEntry();
	}

	return true;
}

bool HelperXmlHandler_EpubTOC::characters( const QString& ch )
{
	//  qDebug() << "characters" << " " << ch;
	if ( m_inText )
		m_lastTitle = ch;

	checkNewTocEntry();
	return true;
}

bool HelperXmlHandler_EpubTOC::endElement( const QString&, const QString& localName, const QString& )
{
//	qDebug() << "endElement" << " " << qName;

	if ( localName == "navMap" )
	{
		m_inNavMap = false;
		return true;
	}

	if ( localName == "navPoint" )
		m_indent--;

	if ( localName == "text" )
		m_inText = false;

	return true;
}

void HelperXmlHandler_EpubTOC::checkNewTocEntry()
{
	if ( !m_lastId.isEmpty() && !m_lastTitle.isEmpty() )
	{
		EBookTocEntry entry;
		entry.name = m_lastTitle;
		entry.url = m_epub->pathToUrl( m_lastId );
		entry.iconid = EBookTocEntry::IMAGE_AUTO;
		entry.indent = m_indent - 1;

		entries.push_back( entry );

		//qDebug() << "TOC entry: " << m_lastId << " :" << m_lastTitle << " :" << m_indent - 1;

		m_lastId.clear();
		m_lastTitle.clear();
	}
}
