/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/* libwpd
 * Version: MPL 2.0 / LGPLv2.1+
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * Major Contributor(s):
 * Copyright (C) 2003 William Lachance (wrlach@gmail.com)
 * Copyright (C) 2004 Marc Maurer (uwog@uwog.net)
 * Copyright (C) 2006 Fridrich Strba (fridrich.strba@bluewin.ch)
 *
 * For minor contributions see the git repository.
 *
 * Alternatively, the contents of this file may be used under the terms
 * of the GNU Lesser General Public License Version 2.1 or later
 * (LGPLv2.1+), in which case the provisions of the LGPLv2.1+ are
 * applicable instead of those above.
 *
 * For further information visit http://libwpd.sourceforge.net
 */

/* "This product is not manufactured, approved, or supported by
 * Corel Corporation or Corel Corporation Limited."
 */

#include "WP42StylesListener.h"
#include "WPXTable.h"
#include "WP42FileStructure.h"
#include "WPXFileStructure.h"
#include "libwpd_internal.h"

WP42StylesListener::WP42StylesListener(std::list<WPXPageSpan> &pageList, std::vector<WP42SubDocument *> &subDocuments) :
	WP42Listener(),
	WPXStylesListener(pageList),
	m_currentPage(),
	m_nextPage(),
	m_subDocuments(subDocuments),
	m_tempMarginLeft(1.0),
	m_tempMarginRight(1.0),
	m_currentPageHasContent(false),
	m_isSubDocument(false),
	m_pageListHardPageMark(m_pageList.end())
{
}

void WP42StylesListener::endDocument()
{
	insertBreak(WPX_SOFT_PAGE_BREAK); // pretend we just had a soft page break (for the last page)
}

void WP42StylesListener::endSubDocument()
{
	insertBreak(WPX_SOFT_PAGE_BREAK); // pretend we just had a soft page break (for the last page)
}

void WP42StylesListener::insertBreak(unsigned char breakType)
{
	if (m_isSubDocument)
		return;

	if (!isUndoOn())
	{
		WPXTableList tableList;
		switch (breakType)
		{
		case WPX_PAGE_BREAK:
		case WPX_SOFT_PAGE_BREAK:
		{
			if ((m_pageList.size() > 0) && (m_currentPage==m_pageList.back())
			        && (m_pageListHardPageMark != m_pageList.end()))
			{
				m_pageList.back().setPageSpan(m_pageList.back().getPageSpan() + 1);
			}
			else
			{
				m_pageList.push_back(WPXPageSpan(m_currentPage));
				if (m_pageListHardPageMark == m_pageList.end())
				{
					--m_pageListHardPageMark;
				}
			}
			m_currentPage = WPXPageSpan(m_pageList.back(), 0.0, 0.0);
			m_currentPage.setPageSpan(1);

			auto headerFooterList = m_nextPage.getHeaderFooterList();
			for (const auto &hf : headerFooterList)
			{
				if (hf.getOccurrence() != NEVER)
				{
					m_currentPage.setHeaderFooter(hf.getType(), hf.getInternalType(),
					                              hf.getOccurrence(), hf.getSubDocument(), hf.getTableList());
					_handleSubDocument(hf.getSubDocument(), WPX_SUBDOCUMENT_HEADER_FOOTER, hf.getTableList());
				}
				else
				{
					m_currentPage.setHeaderFooter(hf.getType(), hf.getInternalType(),
					                              hf.getOccurrence(), nullptr, hf.getTableList());
				}
			}
			m_nextPage = WPXPageSpan();
			m_currentPageHasContent = false;
		}
		break;
		default:
			break;
		}
		if (breakType == WPX_PAGE_BREAK)
		{
			m_pageListHardPageMark = m_pageList.end();
			m_currentPage.setMarginLeft(m_tempMarginLeft);
			m_currentPage.setMarginRight(m_tempMarginRight);
		}
	}
}


void WP42StylesListener::headerFooterGroup(unsigned char headerFooterDefinition, WP42SubDocument *subDocument)
{
	if (subDocument)
		m_subDocuments.push_back(subDocument);

	if (!isUndoOn())
	{
		bool tempCurrentPageHasContent = m_currentPageHasContent;

		unsigned char headerFooterType = (headerFooterDefinition & 0x03);
		WPXHeaderFooterType wpxType = ((headerFooterType <= WPX_HEADER_B) ? HEADER : FOOTER);

		unsigned char occurrenceBits = ((headerFooterDefinition & 0xFC) >> 2);

		WPD_DEBUG_MSG(("WordPerfect: headerFooterGroup (headerFooterType: %i, occurrenceBits: %i)\n",
		               headerFooterType, occurrenceBits));

		WPXHeaderFooterOccurrence wpxOccurrence;

		if (occurrenceBits & WP42_HEADER_FOOTER_GROUP_ALL_BIT)
			wpxOccurrence = ALL;
		else if (occurrenceBits & WP42_HEADER_FOOTER_GROUP_EVEN_BIT)
			wpxOccurrence = EVEN;
		else if (occurrenceBits & WP42_HEADER_FOOTER_GROUP_ODD_BIT)
			wpxOccurrence = ODD;
		else
			wpxOccurrence = NEVER;

		WPXTableList tableList;

		if ((wpxType == HEADER) && tempCurrentPageHasContent)
			m_nextPage.setHeaderFooter(wpxType, headerFooterType, wpxOccurrence, subDocument, tableList);
		else /* FOOTER || !tempCurrentPageHasContent */
		{
			if (wpxOccurrence != NEVER)
			{
				m_currentPage.setHeaderFooter(wpxType, headerFooterType, wpxOccurrence, subDocument, tableList);
				_handleSubDocument(subDocument, WPX_SUBDOCUMENT_HEADER_FOOTER, tableList);
			}
			else
				m_currentPage.setHeaderFooter(wpxType, headerFooterType, wpxOccurrence, nullptr, tableList);
		}
		m_currentPageHasContent = tempCurrentPageHasContent;
	}
}

void WP42StylesListener::suppressPageCharacteristics(unsigned char suppressCode)
{
	if (!isUndoOn())
	{
		if (suppressCode & 0x01)
		{
			m_currentPage.setHeadFooterSuppression(WPX_HEADER_A, true);
			m_currentPage.setHeadFooterSuppression(WPX_HEADER_B, true);
			m_currentPage.setHeadFooterSuppression(WPX_FOOTER_A, true);
			m_currentPage.setHeadFooterSuppression(WPX_FOOTER_B, true);
		}
		if (suppressCode & 0x08)
		{
			m_currentPage.setHeadFooterSuppression(WPX_HEADER_A, true);
			m_currentPage.setHeadFooterSuppression(WPX_HEADER_B, true);
		}
		if (suppressCode & 0x10)
			m_currentPage.setHeadFooterSuppression(WPX_HEADER_A, true);
		if (suppressCode & 0x20)
			m_currentPage.setHeadFooterSuppression(WPX_HEADER_B, true);
		if (suppressCode & 0x40)
			m_currentPage.setHeadFooterSuppression(WPX_FOOTER_A, true);
		if (suppressCode & 0x80)
			m_currentPage.setHeadFooterSuppression(WPX_FOOTER_B, true);
	}
}

void WP42StylesListener::_handleSubDocument(const WPXSubDocument *subDocument, WPXSubDocumentType subDocumentType,
                                            WPXTableList /* tableList */, int /* nextTableIndice */)
{
	if (!isUndoOn())
	{
		bool oldIsSubDocument = m_isSubDocument;
		m_isSubDocument = true;
		if (subDocumentType == WPX_SUBDOCUMENT_HEADER_FOOTER)
		{
			bool oldCurrentPageHasContent = m_currentPageHasContent;

			if (subDocument)
				static_cast<const WP42SubDocument *>(subDocument)->parse(this);

			m_currentPageHasContent = oldCurrentPageHasContent;
		}
		else
		{
			if (subDocument)
				static_cast<const WP42SubDocument *>(subDocument)->parse(this);
		}
		m_isSubDocument = oldIsSubDocument;
	}
}
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