#include "xml-vym.h"

 #include <QMessageBox>

 #include <QColor>

 #include <QTextStream>

 #include <iostream>

 #include <typeinfo>

 #include "misc.h"

 #include "settings.h"

 #include "linkablemapobj.h"

 #include "version.h"

 static BranchObj *lastBranch;

 static FloatObj *lastFloat;

 static OrnamentedObj *lastOO;

 extern Settings settings;

 extern QString vymVersion;

 bool parseVYMHandler::startDocument()

 {

     errorProt = "";

     state = StateInit;

     laststate = StateInit;

 	stateStack.clear();

 	stateStack.append(StateInit);

 	htmldata="";

 	isVymPart=false;

     return true;

 }

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

                     const QString& eName, const QXmlAttributes& atts ) 

 {

     QColor col;

 	/* Testing

 	cout << "startElement <"<< qPrintable(eName)

 		<<">  state="<<state 

 		<<"  laststate="<<stateStack.last()

 		<<"   loadMode="<<loadMode

 		<<"       line="<<QXmlDefaultHandler::lineNumber()

 		<<endl;

 	*/	

 	stateStack.append (state);	

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

 	{

         state = StateMap;

 		if (loadMode==NewMap )

 		{

 			// Create mapCenter

 			model->clear();

 			lastBranch=model->first();	// avoid empty pointer

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

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

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

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

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

 			{

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

 				model->getScene()->setBackgroundBrush(col);

 			}	    

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

 			{

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

 				model->setSelectionColor(col);

 			}	    

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

 			{

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

 					model->setMapLinkColorHint(LinkableMapObj::HeadingColor);

 				else

 					model->setMapLinkColorHint(LinkableMapObj::DefaultColor);

 			}

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

 				model->setMapLinkStyle(atts.value("linkStyle"));

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

 			{

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

 				model->setMapDefLinkColor(col);

 			}	

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

 			{

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

 				model->setMapDefXLinkColor(col);

 			}	

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

 				model->setMapDefXLinkWidth(atts.value("defXLinkWidth").toInt ());

 		}	

 		// Check version

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

 		{

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

 				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 " + vymVersion + 

 				   ". If you run into problems after pressing "

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

 			else	   

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

 		}

 	} 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

 			model->createMapCenter(); 

 			lastBranch=model->getSelectedBranch();

 		} else

 		{

 			// Treat the found mapcenter as a branch 

 			// in an existing map

 			LinkableMapObj* lmo=model->getSelection();

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

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

 			{

 				lastBranch=(BranchObj*)lmo;

 				if (loadMode==ImportAdd)

 				{

 					model->createBranch();

 					lastBranch=model->getSelectedBranch();

 				} else

 					lastBranch->clear();

 			} else

 				return false;

 		}

 		readBranchAttr (atts);

 	} else if ( 

 		(eName == "standardflag" ||eName == "standardFlag") && 

 		(state == StateMapCenter || state==StateBranch)) 

 	{

 		state=StateStandardFlag;

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

 	{

 		laststate=state;

 		state=StateHeading;

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

 		{

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

 			lastBranch->setColor(col );

 		}	    

 	} else if ( eName == "note" && 

 				(state == StateMapCenter ||state==StateBranch))

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

 		state=StateNote;

 		if (!readNoteAttr (atts) ) return false;

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

 	{

 		laststate=state;

 		state=StateHtmlNote;

     } else if ( eName == "floatimage" && 

 				(state == StateMapCenter ||state==StateBranch)) 

 	{

 		state=StateFloatImage;

         lastBranch->addFloatImage();

 		lastFloat=lastBranch->getLastFloatImage();

 		if (!readFloatImageAttr(atts)) return false;

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

 	{

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

 		isVymPart=true;

 		LinkableMapObj* lmo=model->getSelection();

 		if (!lmo)

 		{

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

 			// selection==lmo==NULL

 			// Treat it like ImportAdd then...

 			loadMode=ImportAdd;

 			lmo=model->first();		

 		}	

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

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

 		{

 			lastBranch=(BranchObj*)(lmo);

 			if (eName=="branch")

 			{

 				state=StateBranch;

 				if (loadMode==ImportAdd)

 				{

 					model->createBranch();

 					lastBranch=model->getSelectedBranch();

 				} else

 					lastBranch->clear();

 				readBranchAttr (atts);

 			} else if (eName=="floatimage")

 			{

 				state=StateFloatImage;

 				lastBranch->addFloatImage();

 				lastFloat=lastBranch->getLastFloatImage();

 				if (!readFloatImageAttr(atts)) return false;

 			} else return false;

 		} else return false;

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

 	{

 		state=StateBranch;

 		model->createBranch();

 		lastBranch=model->getSelectedBranch();

 		readBranchAttr (atts);

 	} 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 == "frame" && (state == StateBranch||state==StateMapCenter)) 

 	{

 		laststate=state;

 		state=StateFrame;

 		if (!readFrameAttr(atts)) return false;

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

 	{

 		state=StateBranchXLink;

 		if (!readXLinkAttr (atts)) return false;

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

 	{

 		model->createBranch();

 		lastBranch=model->getSelectedBranch();

 		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 parseVYMHandler::endElement  ( const QString&, const QString&, const QString &eName)

 {

 	/* Testing

 	cout << "endElement </" <<qPrintable(eName)

 		<<">  state=" <<state 

 		<<"  laststate=" <<laststate

 		<<"  stateStack="<<stateStack.last() 

 		<<endl;

 	*/

     switch ( state ) 

 	{

         case StateBranch: 

 			model->selectParent();

 			lastBranch=model->getSelectedBranch();

             break;

         case StateHtml: 

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

 			if (eName=="html")

 			{

 				state=StateHtmlNote;  

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

 				no.setNote (htmldata);

 				lastBranch->setNote (no);

 			}	

 			break;

 		default: 

 			break;

     }  

 	state=stateStack.takeLast();	

 	return true;

 }

 bool parseVYMHandler::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:

 			model->select(ch_simplified);

 			break;

 		case StateMapSetting:break;

         case StateMapCenter: break;

         case StateNote:

 			lastBranch->setNote(ch_simplified);

 			break;

         case StateBranch: break;

         case StateStandardFlag: 

             lastBranch->activateStandardFlag(ch_simplified); 

             break;

         case StateFloatImage: break;

         case StateHtmlNote: break;

         case StateHtml:

 			htmldata+=ch_org;

 			break;

         case StateHeading: 

             model->setHeading(ch_simplified);

             break;

         default: 

 			return false;

     }

     return true;

 }

 QString parseVYMHandler::errorString() 

 {

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

 }

 bool parseVYMHandler::readBranchAttr (const QXmlAttributes& a)

 {

 	lastOO=lastBranch;

 	if (!readOOAttr(a)) return false;

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

 		lastBranch->toggleScroll();

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

 		lastOO->setFrameType (a.value("frameType")); //Compatibility 1.8.1

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

 	{	

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

 			lastBranch->setIncludeImagesVer(true);

 		else	

 			lastBranch->setIncludeImagesVer(false);

 	}	

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

 	{	

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

 			lastBranch->setIncludeImagesHor(true);

 		else	

 			lastBranch->setIncludeImagesHor(false);

 	}	

 	return true;	

 }

 bool parseVYMHandler::readFrameAttr (const QXmlAttributes& a)

 {

 	bool ok;

 	int x;

 	if (lastOO)

 	{

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

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

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

 			lastOO->setFramePenColor (a.value("penColor"));

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

 			lastOO->setFrameBrushColor (a.value("brushColor"));

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

 		{

 			x=a.value("padding").toInt(&ok);

 			if (ok) lastOO->setFramePadding(x);

 		}	

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

 		{

 			x=a.value("borderWidth").toInt(&ok);

 			if (ok) lastOO->setFrameBorderWidth(x);

 		}	

 	}		

 	return true;

 }

 bool parseVYMHandler::readOOAttr (const QXmlAttributes& a)

 {

 	if (lastOO)

 	{

 		bool okx,oky;

 		float x,y;

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

 		{

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

 			{

 				x=a.value("relPosX").toFloat (&okx);

 				y=a.value("relPosY").toFloat (&oky);

 				if (okx && oky  )

 				{

 					lastOO->setUseRelPos (true);

 					lastOO->move2RelPos (x,y);

 				}	

 				else

 					return false;   // Couldn't read relPos

 			}           

 		}           

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

 		{

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

 			{

 				x=a.value("absPosX").toFloat (&okx);

 				y=a.value("absPosY").toFloat (&oky);

 				if (okx && oky  )

 					lastOO->move(x,y);

 				else

 					return false;   // Couldn't read absPos

 			}           

 		}           

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

 			lastOO->setID (a.value ("id"));

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

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

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

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

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

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

 				lastOO->setHideInExport(true);

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

 		{

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

 				lastOO->setHideLinkUnselected(true);

 			else	

 				lastOO->setHideLinkUnselected(false);

 		}	

 	}

 	return true;	

 }

 bool parseVYMHandler::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( QIODevice::ReadOnly) )

 		{

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

 			return false;

 		}	

 		QTextStream stream( &file );

 		QString lines;

 		while ( !stream.atEnd() ) {

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

 		}

 		file.close();

 		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") );

 	lastBranch->setNote(no);

 	return true;

 }

 bool parseVYMHandler::readFloatImageAttr (const QXmlAttributes& a)

 {

 	lastOO=lastFloat;

 	//if (!readOOAttr(a)) return false;

 	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() ) 

 	{

 		// Only for compatibility. THis is not used since 1.7.11 

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

 			lastFloat->setFloatExport(true);

 		else	

 			lastFloat->setFloatExport (false);

 	}	

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

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

     float x,y;

     bool okx,oky;

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

 	{

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

 		{

 			// read relPos

 			x=a.value("relPosX").toFloat (&okx);

 			y=a.value("relPosY").toFloat (&oky);

 			if (okx && oky) 

 				{

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

 					// make sure floats in mapcenter are repositioned to relative pos

 					if (lastBranch->getDepth()==0) lastBranch->positionContents();

 				}

 			else

 				// Couldn't read relPos

 				return false;  

 		}           

 	}	

 	if (!readOOAttr(a)) return false;

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

 	{

 		((FloatImageObj*)(lastFloat))->setOriginalFilename (a.value("orgName"));

 	}

 	return true;

 }

 bool parseVYMHandler::readXLinkAttr (const QXmlAttributes& a)

 {

 	QColor col;

 	bool okx;

 	bool success=false;

 	XLinkObj *xlo=new XLinkObj (model->getScene());

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

 	{

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

 		xlo->setColor (col);

 	}

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

 	{

 		xlo->setWidth(a.value ("width").toInt (&okx, 10));

 	}

 	// Connecting by select string for compatibility with version < 1.8.76

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

 	{ 

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

 		{

 			LinkableMapObj *lmo=model->findObjBySelect (a.value( "beginBranch"));

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

 			{

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

 				lmo=model->findObjBySelect (a.value( "endBranch"));

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

 				{

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

 					xlo->activate();

 					success=true;

 				}

 			}

 		}           

 	}	

 	// object ID is used starting in version 1.8.76

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

 	{ 

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

 		{

 			LinkableMapObj *lmo=model->findID (a.value( "beginID"));

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

 			{

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

 				lmo=model->findID (a.value( "endID"));

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

 				{

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

 					xlo->activate();

 					success=true;

 				}

 			}

 		}           

 	}	

 	if (!success) delete (xlo);

 	return true;	// xLinks can only be established at the "end branch", return true

 }

 bool parseVYMHandler::readHtmlAttr (const QXmlAttributes& a)

 {

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

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

 	return true;

 }

 bool parseVYMHandler::readSettingAttr (const QXmlAttributes& a)

 {

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

 	{

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

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

 		else

 			return false;

 	} else

 		return false;

 	return true;

 }