/* -*- mode: C++; tab-width: 4; c-basic-offset: 4; -*- */

/* AbiSource
 * 
 * Copyright (C) 2008 Firat Kiyak <firatkiyak@gmail.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 2
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  
 * 02110-1301 USA.
 */

// Class definition include
#include <OXML_Element_Paragraph.h>

// AbiWord includes
#include <ut_types.h>
#include <ut_string.h>
#include <pd_Document.h>

OXML_Element_Paragraph::OXML_Element_Paragraph(const std::string & id) : 
	OXML_Element(id, P_TAG, BLOCK), pageBreak(false), m_section(NULL)
{
}

OXML_Element_Paragraph::~OXML_Element_Paragraph()
{

}

UT_Error OXML_Element_Paragraph::serialize(IE_Exp_OpenXML* exporter)
{
	UT_Error err = UT_OK;

	err = exporter->startParagraph(TARGET);
	if(err != UT_OK)
		return err;

	err = this->serializeProperties(exporter); // Paragraph properties
	if(err != UT_OK)
		return err;

	err = this->serializeChildren(exporter);
	if(err != UT_OK)
		return err;

	return exporter->finishParagraph(TARGET);
}

UT_Error OXML_Element_Paragraph::serializeChildren(IE_Exp_OpenXML* exporter)
{
	UT_Error ret = UT_OK;

	bool includesList = false;

	OXML_ElementVector::size_type i;
	OXML_ElementVector children = getChildren();
	for (i = 0; i < children.size(); i++)
	{
		// LIST children are handled in serializeProperties function
		if(children[i]->getType() != LIST)
		{	
			if(includesList)
				children[i]->setType(LIST);
			ret = children[i]->serialize(exporter);
			if(ret != UT_OK)
				return ret;
		}
		else 
			includesList = true;
	}

	return ret;
}

UT_Error OXML_Element_Paragraph::serializeProperties(IE_Exp_OpenXML* exporter)
{
	//TODO: Add all the property serializations here
	UT_Error err = UT_OK;
	const gchar* szValue = NULL;

	err = exporter->startParagraphProperties(TARGET);
	if(err != UT_OK)
		return err;

	if(pageBreak)
	{
		err = exporter->setPageBreak(TARGET);
		if(err != UT_OK)
			return err;	
	}

	if(getAttribute(PT_STYLE_ATTRIBUTE_NAME, szValue) == UT_OK)
	{
		err = exporter->setParagraphStyle(TARGET, szValue);
		if(err != UT_OK)
			return err;
	}

	if(getProperty("widows", szValue) == UT_OK)
	{
		err = exporter->setWidows(TARGET, szValue);
		if(err != UT_OK)
			return err;
	}

	if(getProperty("text-align", szValue) == UT_OK)
	{
		if(!strcmp(szValue, "justify"))
		{
			err = exporter->setTextAlignment(TARGET, "both");
		}
		else if(!strcmp(szValue, "center"))
		{
			err = exporter->setTextAlignment(TARGET, "center");
		}
		else if(!strcmp(szValue, "right"))
		{
			err = exporter->setTextAlignment(TARGET, "right");
		}
		else if(!strcmp(szValue, "left"))
		{
			err = exporter->setTextAlignment(TARGET, "left");
		}

		if(err != UT_OK)
			return err;
	}

	if(getProperty("text-indent", szValue) == UT_OK)
	{
		err = exporter->setTextIndentation(TARGET, szValue);
		if(err != UT_OK)
			return err;
	}

	if(getProperty("margin-left", szValue) == UT_OK)
	{
		err = exporter->setParagraphLeftMargin(TARGET, szValue);
		if(err != UT_OK)
			return err;
	}

	if(getProperty("margin-right", szValue) == UT_OK)
	{
		err = exporter->setParagraphRightMargin(TARGET, szValue);
		if(err != UT_OK)
			return err;
	}

	if(getProperty("margin-bottom", szValue) == UT_OK)
	{
		err = exporter->setParagraphBottomMargin(TARGET, szValue);
		if(err != UT_OK)
			return err;
	}

	if(getProperty("margin-top", szValue) == UT_OK)
	{
		err = exporter->setParagraphTopMargin(TARGET, szValue);
		if(err != UT_OK)
			return err;
	}

	if(getProperty("line-height", szValue) == UT_OK)
	{
		err = exporter->setLineHeight(TARGET, szValue);
		if(err != UT_OK)
			return err;
	}

	if(getProperty("tabstops", szValue) == UT_OK)
	{
		err = exporter->setTabstops(TARGET, szValue);
		if(err != UT_OK)
			return err;
	}

	if(getProperty("bgcolor", szValue) == UT_OK)
	{
		err = exporter->setBackgroundColor(TARGET, szValue);
		if(err != UT_OK)
			return err;
	}

	//serialize List here if any list appended to the paragraph since we need properties of
	//list to be included in paragraph properties section
	//also inherit the properties

	OXML_ElementVector::size_type i;
	OXML_ElementVector children = getChildren();
	for (i = 0; i < children.size(); i++)
	{
		children[i]->inheritProperties(this);
		if(children[i]->getType() == LIST)
		{
			err = children[i]->serialize(exporter);
			if(err != UT_OK)
				return err;
		}
	}

	if(m_section)
	{
		err = m_section->serializeProperties(exporter, this); // Section properties
		if(err != UT_OK)
			return err;
	}

	return exporter->finishParagraphProperties(TARGET);
}


UT_Error OXML_Element_Paragraph::addToPT(PD_Document * pDocument)
{
	UT_Error ret = UT_OK;

	if (pDocument == NULL)
		return UT_ERROR;

	//update list id and parent id here
	const gchar* pListId = getListId();
	const gchar* pListLevel = getListLevel();
	if(pListId && pListLevel)
	{
		std::string listid(pListId);
		std::string level(pListLevel);
		std::string parentid(pListId);
		parentid += "0";
		listid += level;
		if(!level.compare("0"))
		{	
			parentid = "0";		
		}
		
		ret = setAttribute("level", pListLevel);
		if(ret != UT_OK)
			return ret;
	
		ret = setAttribute("listid", listid.c_str());
		if(ret != UT_OK)
			return ret;

		ret = setAttribute("parentid", parentid.c_str());
		if(ret != UT_OK)
			return ret; 	

		//now copy over properties from the corresponding OXML_List object
		OXML_Document* doc = OXML_Document::getInstance();
		if(doc)
		{
			OXML_SharedList sList = doc->getListById(atoi(listid.c_str()));
			if(sList)
			{
				ret = setProperties(sList->getProperties());
				if(ret != UT_OK)
					return ret; 	
			}
		}

	}

	if(pageBreak)
	{
		UT_UCSChar ucs = UCS_FF;
		ret = pDocument->appendSpan(&ucs, 1) ? UT_OK : UT_ERROR;
		if(ret != UT_OK) 
		{
			return ret;
		}

	}

	const gchar ** atts = getAttributesWithProps();

	if (atts != NULL) {
		ret = pDocument->appendStrux(PTX_Block, atts) ? UT_OK : UT_ERROR;
		if(ret != UT_OK) {
			UT_ASSERT_HARMLESS(ret == UT_OK);
			return ret;
		}
	} else {
		ret = pDocument->appendStrux(PTX_Block, NULL) ? UT_OK : UT_ERROR;
	}
		

	if(pListId && pListLevel)
	{
		ret = setAttribute("type", "list_label");
		if(ret != UT_OK)
			return ret;

		const gchar ** ppAttr = getAttributesWithProps();
    
		if(!pDocument->appendObject(PTO_Field, ppAttr))
			return ret;

		pDocument->appendFmt(ppAttr);
	
		UT_UCS4String string = "\t";
		pDocument->appendSpan(string.ucs4_str(), string.size());
	}
	
	return addChildrenToPT(pDocument);
}

const gchar* OXML_Element_Paragraph::getListLevel()
{
	UT_Error err = UT_OK;
	const gchar* szValue;

	err = getAttribute("level", szValue);
	if(err != UT_OK)
	{
		return NULL;
	}
	return szValue;
}

const gchar* OXML_Element_Paragraph::getListId()
{
	UT_Error err = UT_OK;
	const gchar* szValue;

	err = getAttribute("listid", szValue);
	if(err != UT_OK)
	{
		return NULL;
	}
	return szValue;
}

void OXML_Element_Paragraph::setPageBreak()
{
	pageBreak = true;
}

bool OXML_Element_Paragraph::isNumberedList()
{
	UT_Error err = UT_OK;
	const gchar* szValue;

	err = getProperty("list-style", szValue);
	if(err != UT_OK)
	{
		return false;
	}
	if(!strcmp(szValue, "Numbered List"))
	{
		return true;
	}
	return false;
}

void OXML_Element_Paragraph::setSection(OXML_Section* section)
{
	m_section = section;
}