#include "xml.h"

 #include <qmessagebox.h>

 #include <qcolor.h>

 #include <qstylesheet.h>

 #include <iostream>

 #include "misc.h"

 #include "settings.h"

 #include "linkablemapobj.h"

 #include "version.h"

 static BranchObj *lastBranch;

 static FloatObj *lastFloat;

 extern Settings settings;

 mapBuilderHandler::mapBuilderHandler() {}

 mapBuilderHandler::~mapBuilderHandler() {}

 QString mapBuilderHandler::errorProtocol() { return errorProt; }

 bool mapBuilderHandler::startDocument()

 {

     errorProt = "";

     state = StateInit;

     laststate = StateInit;

     branchDepth=0;

 	htmldata="";

 	isVymPart=false;

     return true;

 }

 QString mapBuilderHandler::parseHREF(QString href)

 {

 	QString type=href.section(":",0,0);

 	QString path=href.section(":",1,1);

 	if (!tmpDir.endsWith("/"))

 		return tmpDir + "/" + path;

 	else	

 		return tmpDir + path;

 }

 bool mapBuilderHandler::startElement  ( const QString&, const QString&,

                     const QString& eName, const QXmlAttributes& atts ) 

 {

     QColor col;

 	//cout << "startElement <"<<eName<<">  state="<<state <<"  laststate="<<laststate<<"   loadMode="<<loadMode<<endl;

     if ( state == StateInit && (eName == "vymmap")  ) 

 	{

         state = StateMap;

 		if (!atts.value( "version").isEmpty() ) 

 		{

 			mc->setVersion(atts.value( "version" ));

 			if (!mc->checkVersion())

 				QMessageBox::warning( 0, "Warning: Version Problem" ,

 				   "<h3>Map is newer than VYM</h3>"

 				   "<p>The map you are just trying to load was "

 				   "saved using vym " +atts.value("version")+". "

 				   "The version of this vym is " __VYM_VERSION__

 				   ". If you run into problems after pressing "

 				   "the ok-button below, updating vym should help.");

 		}

 		if (loadMode==NewMap)

 		{

 			if (!atts.value( "author").isEmpty() )

 			{

 				mc->setAuthor(atts.value( "author" ) );

 			}

 			if (!atts.value( "comment").isEmpty() )

 			{

 				mc->setComment (atts.value( "comment" ) );

 			}

 			if (!atts.value( "backgroundColor").isEmpty() )

 			{

 				col.setNamedColor(atts.value("backgroundColor"));

 				mc->getCanvas()->setBackgroundColor(col);

 			}	    

 			if (!atts.value( "linkColorHint").isEmpty() ) 

 			{

 				if (atts.value("linkColorHint")=="HeadingColor")

 					me->setLinkColorHint(HeadingColor);

 				else

 					me->setLinkColorHint(DefaultColor);

 			}

 			if (!atts.value( "linkStyle").isEmpty() ) 

 			{

 				QString s=atts.value("linkStyle");

 				if (s=="StyleLine")

 					me->setLinkStyle(StyleLine);

 				else	

 					if (s=="StyleParabel")

 						me->setLinkStyle(StyleParabel);

 					else	

 						if (s=="StylePolyLine")

 							me->setLinkStyle(StylePolyLine);

 						else	

 							me->setLinkStyle(StylePolyParabel);

 			}	

 			if (!atts.value( "linkColor").isEmpty() ) 

 			{

 				col.setNamedColor(atts.value("linkColor"));

 				me->setLinkColor(col);

 			}	

 		}	

 	} else if ( eName == "select" && state == StateMap ) 

 	{

 		state=StateMapSelect;

 	} else if ( eName == "setting" && state == StateMap ) 

 	{

 		state=StateMapSetting;

 		if (loadMode==NewMap)

 			readSettingAttr (atts);

 	} else if ( eName == "mapcenter" && state == StateMap ) 

 	{

 		state=StateMapCenter;

 		if (loadMode==NewMap)

 		{	

 			// Really use the found mapcenter as MCO in a new map

 			lastBranch=mc;	// avoid empty pointer

 		} else

 		{

 			// Treat the found mapcenter as a branch 

 			// in an existing map

 			LinkableMapObj* lmo=me->getSelection();

 			if (lmo && (typeid(*lmo) == typeid(BranchObj) ) 

 			        || (typeid(*lmo) == typeid(MapCenterObj) ) )

 			{

 				lastBranch=(BranchObj*)(lmo);

 				if (loadMode==ImportAdd)

 				{

 					lastBranch->addBranch();

 					lastBranch=lastBranch->getLastBranch();

 				} else

 					lastBranch->clear();

 			} else

 				return false;

 		}

 		readBranchAttr (atts);

 	} else if ( (eName == "standardflag" ||eName == "standardFlag") && state == StateMapCenter) 

 	{

 		state=StateMapCenterStandardFlag;

 	} else if ( eName == "heading" && state == StateMapCenter) 

 	{

 		state=StateMapCenterHeading;

 		if (!atts.value( "textColor").isEmpty() ) 

 		{

 			col.setNamedColor(atts.value("textColor"));

 			lastBranch->setColor(col ,false );

 		}	    

 	} else if ( eName == "note" && state == StateMapCenter) 

 	{	// only for backward compatibility (<1.4.6). Use htmlnote now.

 		state=StateMapCenterNote;

 		if (!readNoteAttr (atts) ) return false;

 	} else if ( eName == "htmlnote" && state == StateMapCenter) 

 	{

 		laststate=state;

 		state=StateHtmlNote;

     } else if ( eName == "floatimage" && state == StateMapCenter ) 

 	{

 		state=StateMapCenterFloatImage;

         lastBranch->addFloatImage();

 		lastFloat=lastBranch->getLastFloatImage();

 		if (!readFloatImageAttr(atts)) return false;

 	} else if ( eName == "branch" && state == StateMap) 

 	{

 		// This is used in vymparts, which have no mapcenter!

 		isVymPart=true;

 		state=StateBranch;

 		LinkableMapObj* lmo=me->getSelection();

 		if (!lmo)

 		{

 			// If a vym part is _loaded_ (not imported), 

 			// selection==lmo==NULL

 			// Treat it like ImportAdd then...

 			loadMode=ImportAdd;

 			lmo=mc;

 		}	

 		if (lmo && (typeid(*lmo) == typeid(BranchObj) ) 

 				|| (typeid(*lmo) == typeid(MapCenterObj) ) )

 		{

 			lastBranch=(BranchObj*)(lmo);

 			if (loadMode==ImportAdd)

 			{

 				lastBranch->addBranch();

 				lastBranch=lastBranch->getLastBranch();

 			} else

 				lastBranch->clear();

 		} else

 			return false;

 		branchDepth=1;

 		readBranchAttr (atts);

 	} else if ( eName == "branch" && state == StateMapCenter) 

 	{

 		state=StateBranch;

 		branchDepth=1;

 		lastBranch->addBranch();

 		lastBranch=lastBranch->getLastBranch();

 		readBranchAttr (atts);

 	} else if ( (eName=="standardflag" ||eName == "standardFlag") && state == StateBranch) 

 	{

 		state=StateBranchStandardFlag;

 	} else if ( eName == "heading" && state == StateBranch) 

 	{

 		state=StateBranchHeading;

 		if (!atts.value( "textColor").isEmpty() ) 

 		{

 			col.setNamedColor(atts.value("textColor"));

 			lastBranch->setColor(col ,false );

 		}	    

     } else if ( eName == "note" && state == StateBranch) 

 	{

         state=StateBranchNote;

 		if (!readNoteAttr (atts) ) return false;

 	} else if ( eName == "htmlnote" && state == StateBranch) 

 	{

 		laststate=state;

 		state=StateHtmlNote;

 		no.clear();

 		if (!atts.value( "fonthint").isEmpty() ) 

 			no.setFontHint(atts.value ("fonthint") );

     } else if ( eName == "floatimage" && state == StateBranch ) 

 	{

 		state=StateBranchFloatImage;

         lastBranch->addFloatImage();

 		lastFloat=lastBranch->getLastFloatImage();

 		if (!readFloatImageAttr(atts)) return false;

     } else if ( eName == "xlink" && state == StateBranch ) 

 	{

 		state=StateBranchXLink;

 		if (!readXLinkAttr (atts)) return false;

     } else if ( eName == "branch" && state == StateBranch ) 

 	{

         lastBranch->addBranch();

 		lastBranch=lastBranch->getLastBranch();		

         branchDepth++;

 		readBranchAttr (atts);

     } else if ( eName == "html" && state == StateHtmlNote ) 

 	{

 		state=StateHtml;

 		htmldata="<"+eName;

 		readHtmlAttr(atts);

 		htmldata+=">";

     } else if ( state == StateHtml ) 

 	{

 		// accept all while in html mode,

 		htmldata+="<"+eName;

 		readHtmlAttr(atts);

 		htmldata+=">";

     } else

         return false;   // Error

     return true;

 }

 bool mapBuilderHandler::endElement  ( const QString&, const QString&, const QString &eName)

 {

 //	cout << "endElement </"<<eName<<">  state="<<state <<"  laststate="<<laststate<<endl;

     switch ( state ) 

 	{

         case StateMapSelect: state=StateMap;  return true;

         case StateMapSetting: state=StateMap;  return true;

         case StateMapCenter: state=StateMap;  return true;

         case StateMapCenterStandardFlag: state=StateMapCenter;  return true;

         case StateMapCenterHeading: state=StateMapCenter;  return true;

         case StateMapCenterNote: state=StateMapCenter;  return true;

         case StateMapCenterFloatImage: state=StateMapCenter;  return true;

         case StateBranch: 

             if (branchDepth>1) 

 			{

                 branchDepth--;

                 state=StateBranch;

             } else  

 			{

                 branchDepth=0;

 				if (isVymPart)

 					state=StateMap;

 				else

 					state=StateMapCenter;

             }   

 			lastBranch=(BranchObj*)(lastBranch->getParObj());

              return true;

         case StateBranchStandardFlag: state=StateBranch;  return true;

         case StateBranchHeading: state=StateBranch;  return true;

         case StateBranchNote: state=StateBranch; return true;

         case StateBranchFloatImage: state=StateBranch;  return true;

         case StateBranchXLink: state=StateBranch;  return true;

         case StateHtmlNote: state=laststate; return true;

         case StateHtml: 

 			htmldata+="</"+eName+">";

 			if (eName=="html")

 			{

 				state=StateHtmlNote;  

 				htmldata.replace ("<br></br>","<br />");

 				no.setNote (htmldata);

 				lastBranch->setNote (no);

 				return true;

 			}	else

 			{

 				return true;

 			}	

         case StateMap: state=StateInit;  return true;

         default : 

 			// even for HTML includes, this should never be reached

 			return false;

     }   

 }

 bool mapBuilderHandler::characters   ( const QString& ch)

 {

 	//cout << "characters \""<<ch<<"\"  state="<<state <<"  laststate="<<laststate<<endl;

 	QString ch_org=quotemeta (ch);

     QString ch_simplified=ch.simplifyWhiteSpace();

     if ( ch_simplified.isEmpty() ) return true;

     switch ( state ) 

     {

         case StateInit: break;

         case StateMap: break; 

 		case StateMapSelect:

 			me->select(ch_simplified);

 			break;

 		case StateMapSetting:break;

         case StateMapCenter: break;

         case StateMapCenterStandardFlag: 

             lastBranch->activateStandardFlag(ch_simplified); 

             break;

         case StateMapCenterHeading: 

             lastBranch->setHeading(ch_simplified); 

             break;

         case StateMapCenterNote:

 			lastBranch->setNote(ch_simplified);

 			break;

         case StateBranch: break;

         case StateBranchStandardFlag: 

             lastBranch->activateStandardFlag(ch_simplified); 

             break;

         case StateBranchHeading: 

             lastBranch->setHeading(ch_simplified);

             break;

         case StateBranchNote: 

 			lastBranch->setNote(ch_simplified);

 			break;

         case StateBranchFloatImage: break;

         case StateHtmlNote: break;

         case StateHtml:

 			htmldata+=ch_org;

 			break;

         default: 

 			return false;

     }

     return true;

 }

 QString mapBuilderHandler::errorString() 

 {

     return "the document is not in the VYM file format";

 }

 bool mapBuilderHandler::fatalError( const QXmlParseException& exception ) 

 {

     errorProt += QString( "fatal parsing error: %1 in line %2, column %3\n")

     .arg( exception.message() )

     .arg( exception.lineNumber() )

     .arg( exception.columnNumber() );

     return QXmlDefaultHandler::fatalError( exception );

 }

 void mapBuilderHandler::setMapEditor (MapEditor* e)

 {

     me=e;

 	mc=me->getMapCenter();

 }

 void mapBuilderHandler::setTmpDir (QString tp)

 {

 	tmpDir=tp;

 }

 void mapBuilderHandler::setLoadMode (const LoadMode &lm)

 {

 	loadMode=lm;

 }

 bool mapBuilderHandler::readBranchAttr (const QXmlAttributes& a)

 {

 	bool okx,oky;

 	int x,y;

 	if (!a.value( "absPosX").isEmpty() && loadMode==NewMap && branchDepth<2) 

 	{

 		if (!a.value( "absPosY").isEmpty() ) 

 		{

 			x=a.value("absPosX").toInt (&okx, 10);

 			y=a.value("absPosY").toInt (&oky, 10);

 			if (okx && oky) 

 				lastBranch->move(x,y);

 			else

 				return false;   // Couldn't read absPos

 		}           

 	}           

 	if (!a.value( "scrolled").isEmpty() )

 		lastBranch->toggleScroll();

 	if (!a.value( "url").isEmpty() ) 

 		lastBranch->setURL (a.value ("url"));

 	if (!a.value( "vymLink").isEmpty() ) 

 		lastBranch->setVymLink (a.value ("vymLink"));

 	if (!a.value( "frameType").isEmpty() ) 

 		lastBranch->setFrameType (a.value("frameType"));

 	return true;	

 }

 bool mapBuilderHandler::readNoteAttr (const QXmlAttributes& a)

 {	// only for backward compatibility (<1.4.6). Use htmlnote now.

 	no.clear();

 	QString fn;

 	if (!a.value( "href").isEmpty() ) 

 	{

 		// Load note

 		fn=parseHREF(a.value ("href") );

 		QFile file (fn);

 		QString s;						// Reading a note

 		if ( !file.open( IO_ReadOnly) )

 		{

 			qWarning ("mapBuilderHandler::readNoteAttr:  Couldn't load "+fn);

 			return false;

 		}	

 		QTextStream stream( &file );

 		QString lines;

 		while ( !stream.eof() ) {

 			lines += stream.readLine()+"\n"; 

 		}

 		file.close();

 		// Convert to richtext

 		if ( !QStyleSheet::mightBeRichText( lines ) )

 		{

 			// Here we are workarounding the QT conversion method:

 			// convertFromPlainText does not generate valid xml, needed

 			// for the parser, but just <p> and <br> without closing tags.

 			// So we have to add those by ourselves

 			//lines=quotemeta (lines);

 			lines = QStyleSheet::convertFromPlainText( lines, QStyleSheetItem::WhiteSpaceNormal );

 			lines.replace ("<br>","<br />");

 		}	

 		lines ="<html><head><meta name=\"qrichtext\" content=\"1\" /></head><body>"+lines + "</p></body></html>";

 		no.setNote (lines);

 	}		

 	if (!a.value( "fonthint").isEmpty() ) 

 		no.setFontHint(a.value ("fonthint") );

 	if (state == StateMapCenterNote) 	

 		mc->setNote(no);

 	else

 		lastBranch->setNote(no);

 	return true;

 }

 bool mapBuilderHandler::readFloatImageAttr (const QXmlAttributes& a)

 {

 	if (!a.value( "useOrientation").isEmpty() ) 

 	{

 		if (a.value ("useOrientation") =="true")

 			lastFloat->setUseOrientation (true);

 		else	

 			lastFloat->setUseOrientation (false);

 	}	

 	if (!a.value( "href").isEmpty() )

 	{

 		// Load FloatImage

 		if (!lastFloat->load (parseHREF(a.value ("href") ) ))

 		{

 			QMessageBox::warning( 0, "Warning: " ,

 				"Couldn't load float image\n"+parseHREF(a.value ("href") ));

 			lastBranch->removeFloatImage(((FloatImageObj*)(lastFloat)));

 			lastFloat=NULL;

 			return true;

 		}

 	}	

 	if (!a.value( "floatExport").isEmpty() ) 

 	{

 		if (a.value ("floatExpofrt") =="true")

 			lastFloat->setFloatExport (true);

 		else	

 			lastFloat->setFloatExport (false);

 	}	

 	if (!a.value( "zPlane").isEmpty() ) 

 		lastFloat->setZ (a.value("zPlane").toInt ());

     int x,y;

     bool okx,oky;

 	if (!a.value( "relPosX").isEmpty() ) 

 	{

 		if (!a.value( "relPosY").isEmpty() ) 

 		{

 			// read relPos

 			x=a.value("relPosX").toInt (&okx, 10);

 			y=a.value("relPosY").toInt (&oky, 10);

 			if (okx && oky) 

 				lastFloat->setRelPos (QPoint (x,y) );

 			else

 				// Couldn't read relPos

 				return false;  

 		}           

 	}	

 	return true;

 }

 bool mapBuilderHandler::readXLinkAttr (const QXmlAttributes& a)

 {

 	QColor col;

 	XLinkObj *xlo=new XLinkObj (mc->getCanvas());

 	if (!a.value( "xLinkColor").isEmpty() ) 

 	{

 		col.setNamedColor(a.value("xLinkColor"));

 		xlo->setColor (col);

 	}

 	if (!a.value( "beginBranch").isEmpty() ) 

 	{

 		if (!a.value( "endBranch").isEmpty() ) 

 		{

 			LinkableMapObj *lmo=mc->findObj (a.value( "beginBranch"));

 			if (lmo && typeid (*lmo)==typeid (BranchObj))

 			{

 				xlo->setBegin ((BranchObj*)(lmo));

 				lmo=mc->findObj (a.value( "endBranch"));

 				if (lmo && typeid (*lmo)==typeid (BranchObj))

 				{

 					xlo->setEnd ((BranchObj*)(lmo));

 					xlo->activate();

 					return true;

 				}

 			}

 			return true;	// Not all branches there yet, no error

 		}           

 	}	

 	return false; 

 }

 bool mapBuilderHandler::readHtmlAttr (const QXmlAttributes& a)

 {

 	for (int i=1; i<=a.count(); i++)

 		htmldata+=" "+a.localName(i-1)+"=\""+a.value(i-1)+"\"";

 	return true;

 }

 bool mapBuilderHandler::readSettingAttr (const QXmlAttributes& a)

 {

 	if (!a.value( "key").isEmpty() ) 

 	{

 		if (!a.value( "value").isEmpty() ) 

 			settings.setLocalEntry (me->getDestPath(), a.value ("key"), a.value ("value"));

 		else

 			return false;

 	} else

 		return false;

 	return true;

 }