#include "mapeditor.h"

#include <iostream>

#include <cstdlib>

#include <typeinfo>

#include <QObject>

#include "mainwindow.h"

#include "misc.h"

#include "warningdialog.h"

extern int statusbarTime;

extern Main *mainWindow;

extern QString tmpVymDir;

extern QString clipboardDir;

extern QString clipboardFile;

extern bool clipboardEmpty;

extern bool debug;

extern FlagRowObj *standardFlagsDefault;

extern QMenu* branchContextMenu;

extern QMenu* branchAddContextMenu;

extern QMenu* branchRemoveContextMenu;

extern QMenu* branchLinksContextMenu;

extern QMenu* branchXLinksContextMenuEdit;

extern QMenu* branchXLinksContextMenuFollow;

extern QMenu* floatimageContextMenu;

extern QMenu* canvasContextMenu;

extern Settings settings;

extern QString iconPath;

///////////////////////////////////////////////////////////////////////

///////////////////////////////////////////////////////////////////////

MapEditor::MapEditor( VymModel *vm) 

{

	//cout << "Constructor ME "<<this<<endl;

	mapScene= new QGraphicsScene(NULL);

	mapScene->setBackgroundBrush (QBrush(Qt::white, Qt::SolidPattern));

	model=vm;

	model->setScene (mapScene);

	model->registerEditor(this);

//	model->addMapCenter();	//  FIXME create this in MapEditor until BO and MCO are independent of scene

	model->makeDefault();	// No changes in model so far

    setScene (mapScene);

    printer=NULL;

	// Create bitmap cursors, platform dependant

	HandOpenCursor=QCursor (QPixmap(iconPath+"cursorhandopen.png"),1,1);		

	PickColorCursor=QCursor ( QPixmap(iconPath+"cursorcolorpicker.png"), 5,27 ); 

	CopyCursor=QCursor ( QPixmap(iconPath+"cursorcopy.png"), 1,1 ); 

	XLinkCursor=QCursor ( QPixmap(iconPath+"cursorxlink.png"), 1,7 ); 

	setFocusPolicy (Qt::StrongFocus);

	pickingColor=false;

	drawingLink=false;

	copyingObj=false;

    editingBO=NULL;

    movingObj=NULL;

	printFrame=true;

	printFooter=true;

	setAcceptDrops (true);	

	//model->reposition();	//FIXME really still needed?

	// Action to embed LineEdit for heading in Scene

	editingHeading=false;

	lineEdit=new QLineEdit;

	lineEdit->hide();

	QGraphicsProxyWidget *pw=scene()->addWidget (lineEdit);

	pw->setZValue (100);

	QAction *a = new QAction( tr( "Edit heading","MapEditor" ), this);

	a->setShortcut ( Qt::Key_Return );					//Edit heading

	addAction (a);

    connect( a, SIGNAL( triggered() ), this, SLOT( editHeading() ) );

	a = new QAction( tr( "Edit heading","MapEditor" ), this);

	a->setShortcut ( Qt::Key_Enter);					//Edit heading

	addAction (a);

    connect( a, SIGNAL( triggered() ), this, SLOT( editHeading() ) );

	// Selections

	selectionColor =QColor (255,255,0);

	// Attributes	//FIXME testing only...

	QString k;

	AttributeDef *ad;

	attrTable= new AttributeTable();

	k="A - StringList";

	ad=attrTable->addKey (k,StringList);

	if (ad)

	{

		QStringList sl;

		sl <<"val 1"<<"val 2"<< "val 3";

		ad->setValue (QVariant (sl));

	}

	//attrTable->addValue ("Key A","P 1");

	//attrTable->addValue ("Key A","P 2");

	//attrTable->addValue ("Key A","P 3");

	//attrTable->addValue ("Key A","P 4");

	k="B - FreeString";

	ad=attrTable->addKey (k,FreeString);

	if (ad)

	{

		//attrTable->addValue ("Key B","w1");

		//attrTable->addValue ("Key B","w2");

	}

	k="C - UniqueString";

	ad=attrTable->addKey (k,UniqueString);

	if (ad)

	{

	//attrTable->addKey ("Key Prio");

	//attrTable->addValue ("Key Prio","Prio 1");

	//attrTable->addValue ("Key Prio","Prio 2");

	}

}

MapEditor::~MapEditor()

{

	cout <<"Destructor MapEditor for "<<model->getMapName().toStdString()<<endl;

	// No need to remove tmp files:

	// tmpMapDir is in tmpVymDir, 

	// so it gets removed automagically when vym closes

	model->unregisterEditor(this);

}

VymModel* MapEditor::getModel()

{

    return model;

}

QGraphicsScene * MapEditor::getScene()

{

    return mapScene;

}

void MapEditor::print()

{

	if ( !printer ) 

	{

		printer = new QPrinter;

		printer->setColorMode (QPrinter::Color);

		printer->setPrinterName (settings.value("/mainwindow/printerName",printer->printerName()).toString());

		printer->setOutputFormat((QPrinter::OutputFormat)settings.value("/mainwindow/printerFormat",printer->outputFormat()).toInt());

		printer->setOutputFileName(settings.value("/mainwindow/printerFileName",printer->outputFileName()).toString());

	}

	QRectF totalBBox=model->getTotalBBox();

	// Try to set orientation automagically

	// Note: Interpretation of generated postscript is amibiguous, if 

	// there are problems with landscape mode, see

	// http://sdb.suse.de/de/sdb/html/jsmeix_print-cups-landscape-81.html

	if (totalBBox.width()>totalBBox.height())

		// recommend landscape

		printer->setOrientation (QPrinter::Landscape);

	else	

		// recommend portrait

		printer->setOrientation (QPrinter::Portrait);

	if ( printer->setup(this) ) 

	// returns false, if printing is canceled

	{

		QPainter pp(printer);

		pp.setRenderHint(QPainter::Antialiasing,true);

		// Don't print the visualisation of selection

		model->unselect();

		QRectF mapRect=totalBBox;

		QGraphicsRectItem *frame=NULL;

		if (printFrame) 

		{

			// Print frame around map

			mapRect.setRect (totalBBox.x()-10, totalBBox.y()-10, 

				totalBBox.width()+20, totalBBox.height()+20);

			frame=mapScene->addRect (mapRect, QPen(Qt::black),QBrush(Qt::NoBrush));

			frame->setZValue(0);

			frame->show();    

		}		

		double paperAspect = (double)printer->width()   / (double)printer->height();

		double   mapAspect = (double)mapRect.width() / (double)mapRect.height();

		int viewBottom;

		if (mapAspect>=paperAspect)

		{

			// Fit horizontally to paper width

			//pp.setViewport(0,0, printer->width(),(int)(printer->width()/mapAspect) );	

			viewBottom=(int)(printer->width()/mapAspect);	

		}	else

		{

			// Fit vertically to paper height

			//pp.setViewport(0,0,(int)(printer->height()*mapAspect),printer->height());	

			viewBottom=printer->height();	

		}	

		if (printFooter) 

		{

			// Print footer below map

			QFont font;		

			font.setPointSize(10);

			pp.setFont (font);

			QRectF footerBox(0,viewBottom,printer->width(),15);

			// FIXME fileName not any longer available here: pp.drawText ( footerBox,Qt::AlignLeft,"VYM - " +fileName);

			pp.drawText ( footerBox, Qt::AlignRight, QDate::currentDate().toString(Qt::TextDate));

		}

		mapScene->render (

			&pp, 

			QRectF (0,0,printer->width(),printer->height()-15),

			QRectF(mapRect.x(),mapRect.y(),mapRect.width(),mapRect.height())

		);

		// Viewport has paper dimension

		if (frame)  delete (frame);

		// Restore selection

		model->reselect();

		// Save settings in vymrc

		settings.writeEntry("/mainwindow/printerName",printer->printerName());

		settings.writeEntry("/mainwindow/printerFormat",printer->outputFormat());

		settings.writeEntry("/mainwindow/printerFileName",printer->outputFileName());

	}

}

void MapEditor::setAntiAlias (bool b)

{

	setRenderHint(QPainter::Antialiasing,b);

}

void MapEditor::setSmoothPixmap(bool b)

{

	setRenderHint(QPainter::SmoothPixmapTransform,b);

}

void MapEditor::toggleStandardFlag(QString f)

{

	BranchObj *bo=model->getSelectedBranch();

	if (bo) 

	{

		QString u,r;

		if (bo->isSetStandardFlag(f))

		{

			r="unsetFlag";

			u="setFlag";

		}	

		else

		{

			u="unsetFlag";

			r="setFlag";

		}	

		model->saveState(

			bo,

			QString("%1 (\"%2\")").arg(u).arg(f), 

			bo,

			QString("%1 (\"%2\")").arg(r).arg(f),

			QString("Toggling standard flag \"%1\" of %2").arg(f).arg(model->getObjectName(bo)));

		bo->toggleStandardFlag (f,mainWindow->useFlagGroups());

		model->updateSelection();	// geometry has changed

	}

}

AttributeTable* MapEditor::attributeTable()

{

	return attrTable;

}

void MapEditor::testFunction1()

{

	TreeItem *cur=NULL;

	TreeItem *prev=NULL;

	int d;

	cout << "ME::testFunction1  starting to walk the map...\n";

	while (model->next (cur,prev,d) )

		cout << "*** " <<cur->getHeading().toStdString()<<endl;

	//BranchObj *bo=model->getSelectedBranch();

	//if (bo) model->moveAway (bo);

	//if (bo) bo->setLinkStyle (LinkableMapObj::Line);

/*

	// Displacement and animation of all non-mainbranches

	QPointF p;

	QPointF q;

	BranchObj *bo;

	TreeItem *cur=NULL;

	TreeItem *prev=NULL;

	int d;

	while (cur) 

	{

		bo=(BranchObj*)(cur->getLMO());

		if (cur->depth() >0 && !bo->hasScrolledParent(bo) )

		{

			p=QPointF (qrand() %600-300, qrand () %600-300);

			bo->setRelPos();

			q=bo->getRelPos();

			model->startAnimation (bo,p, q);

		}

		model->next(cur,prev,d);

	}

*/

/* TODO Hide hidden stuff temporary, maybe add this as regular function somewhere

	if (hidemode==HideNone)

	{

		setHideTmpMode (HideExport);

		mapCenter->calcBBoxSizeWithChilds();

		QRectF totalBBox=mapCenter->getTotalBBox();

		QRectF mapRect=totalBBox;

		QCanvasRectangle *frame=NULL;

		cout << "  map has =("<<totalBBox.x()<<","<<totalBBox.y()<<","<<totalBBox.width()<<","<<totalBBox.height()<<")\n";

		mapRect.setRect (totalBBox.x(), totalBBox.y(), 

			totalBBox.width(), totalBBox.height());

		frame=new QCanvasRectangle (mapRect,mapScene);

		frame->setBrush (QColor(white));

		frame->setPen (QColor(black));

		frame->setZValue(0);

		frame->show();    

	}	

	else	

	{

		setHideTmpMode (HideNone);

	}	

	cout <<"  hidemode="<<hidemode<<endl;

	*/

}	

void MapEditor::testFunction2()

{

/*

	// Toggle hidemode

	if (hidemode==HideExport)

		setHideTmpMode (HideNone);

	else	

		setHideTmpMode (HideExport);

*/		

}

void MapEditor::editHeading()

{

	if (editingHeading)

	{

		editHeadingFinished();

		return;

	}

	BranchObj *bo=model->getSelectedBranch();

	if (bo)

	{

		model->setSelectionBlocked(true);

		lineEdit->setText (bo->getHeading());

		QPoint p = mapTo (this,bo->getAbsPos().toPoint() );

		lineEdit->setGeometry(p.x(),p.y(),230,25);

		lineEdit->selectAll();

		lineEdit->show();

		lineEdit->setFocus();

		lineEdit->grabKeyboard();

		editingHeading=true;

	}

}

void MapEditor::editHeadingFinished()

{

	editingHeading=false;

	lineEdit->releaseKeyboard();

	model->setHeading (lineEdit->text() );

	model->setSelectionBlocked(false);

	lineEdit->hide();

	// Maybe reselect previous branch 

	mainWindow->editHeadingFinished (model);

}

void MapEditor::contextMenuEvent ( QContextMenuEvent * e )

{

	// Lineedits are already closed by preceding

	// mouseEvent, we don't need to close here.

    QPointF p = mapToScene(e->pos());

    LinkableMapObj* lmo=model->findMapObj(p, NULL);

    if (lmo) 

	{	// MapObj was found

		if (model->getSelectedLMO() != lmo)

		{

			// select the MapObj

			model->select(lmo);

		}

		// Context Menu 

		if (model->getSelectedBranch() ) 

		{

			// Context Menu on branch or mapcenter

			//FIXME model->updateActions(); needed?

			branchContextMenu->popup(e->globalPos() );

		} else

		{

			if (model->getSelectedFloatImage() )

			{

				// Context Menu on floatimage

				// model->updateActions(); FIXME needed?

				floatimageContextMenu->popup(e->globalPos() );

			}	

		}	

	} else 

	{ // No MapObj found, we are on the Canvas itself

		// Context Menu on scene

		// model->updateActions(); FIXME needed?

		// Open context menu synchronously to position new mapcenter

		model->setContextPos (p);

		canvasContextMenu->exec(e->globalPos() );

		model->unsetContextPos ();

    } 

	e->accept();

}

void MapEditor::keyPressEvent(QKeyEvent* e)

{

	if (e->modifiers() & Qt::ControlModifier)

	{

		switch (mainWindow->getModMode())

		{

			case Main::ModModeColor: 

				setCursor (PickColorCursor);

				break;

			case Main::ModModeCopy: 

				setCursor (CopyCursor);

				break;

			case Main::ModModeXLink: 

				setCursor (XLinkCursor);

				break;

			default :

				setCursor (Qt::ArrowCursor);

				break;

		} 

	}	

}

void MapEditor::keyReleaseEvent(QKeyEvent* e)

{

	if (!(e->modifiers() & Qt::ControlModifier))

		setCursor (Qt::ArrowCursor);

}

void MapEditor::mousePressEvent(QMouseEvent* e)

{

	// Ignore right clicks, these will go to context menus

	if (e->button() == Qt::RightButton )

	{

		e->ignore();

		return;

	}

	//Ignore clicks while editing heading

	if (model->isSelectionBlocked() ) 

	{

		e->ignore();

		return;

	}

    QPointF p = mapToScene(e->pos());

    LinkableMapObj* lmo=model->findMapObj(p, NULL);

	e->accept();

	//Take care of  system flags _or_ modifier modes

	//

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

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

	{

		QString foname=((BranchObj*)lmo)->getSystemFlagName(p);

		if (!foname.isEmpty())

		{

			// systemFlag clicked

			model->selectInt (lmo);

			if (foname=="url") 

			{

				if (e->state() & Qt::ControlModifier)

					mainWindow->editOpenURLTab();

				else	

					mainWindow->editOpenURL();

			}	

			else if (foname=="vymLink")

			{

				mainWindow->editOpenVymLink();

				// tabWidget may change, better return now

				// before segfaulting...

			} else if (foname=="note")

				mainWindow->windowToggleNoteEditor();

			else if (foname=="hideInExport")		

				model->toggleHideExport();

			// FIXME needed? xelection.update();	

			return;	

		} 

	}	

	// No system flag clicked, take care of modmodes (CTRL-Click)

	if (e->state() & Qt::ControlModifier)

	{

		if (mainWindow->getModMode()==Main::ModModeColor)

		{

				pickingColor=true;

				setCursor (PickColorCursor);

				return;

		} 

		if (mainWindow->getModMode()==Main::ModModeXLink)

		{	

			BranchObj *bo_begin=NULL;

			if (lmo)

				bo_begin=(BranchObj*)(lmo);

			else	

				bo_begin=model->getSelectedBranch();

			if (bo_begin)	

			{

				drawingLink=true;

				linkingObj_src=bo_begin;

				tmpXLink=new XLinkObj (mapScene);

				tmpXLink->setBegin (bo_begin);

				tmpXLink->setEnd   (p);

				tmpXLink->setColor(model->getMapDefXLinkColor());

				tmpXLink->setWidth(model->getMapDefXLinkWidth());

				tmpXLink->updateXLink();

				tmpXLink->setVisibility (true);

				return;

			} 

		}

	}	// End of modmodes

    if (lmo) 

	{	

	/*

		cout << "ME::mouse pressed\n";

		cout << "  lmo="<<lmo<<endl;

		cout << "  h="<<((BranchObj*)lmo)->getHeading().toStdString()<<endl;

	*/

		// Select the clicked object

		// FIXME VM better let "find" return an index instead of lmo...

		// Get index of clicked LMO

		TreeItem *ti=lmo->getTreeItem();

		/*

		cout << "  lmo="<<lmo<<"    lmo(ti)="<<ti->getLMO()<<endl;

		cout << "  ti ("<<ti->row()<<","<<ti->column()<<") = "<<ti<<endl;

		*/

		//QModelIndex ix=model->index( ti->row(), ti->column(), model->index (0,0,QModelIndex()) );

		model->select (ti);

		// Left Button	    Move Branches

		if (e->button() == Qt::LeftButton )

		{

			//movingObj_start.setX( p.x() - selection->x() );// TODO replaced selection->lmo here	

			//movingObj_start.setY( p.y() - selection->y() );	

			movingObj_start.setX( p.x() - lmo->x() );	

			movingObj_start.setY( p.y() - lmo->y() );	

			movingObj_orgPos.setX (lmo->x() );

			movingObj_orgPos.setY (lmo->y() );

			lmo->setRelPos();

			movingObj_orgRelPos=lmo->getRelPos();

			// If modMode==copy, then we want to "move" the _new_ object around

			// then we need the offset from p to the _old_ selection, because of tmp

			if (mainWindow->getModMode()==Main::ModModeCopy &&

				e->state() & Qt::ControlModifier)

			{

				BranchObj *bo=model->getSelectedBranch();

				if (bo)

				{

					copyingObj=true;

					bo->addBranch (model->getSelectedBranch());

					model->unselect();

					model->select(bo->getLastBranch());

					model->reposition();

				}

			} 

			movingObj=model->getSelectedLMO();	

		} else

			// Middle Button    Toggle Scroll

			// (On Mac OS X this won't work, but we still have 

			// a button in the toolbar)

			if (e->button() == Qt::MidButton )

				model->toggleScroll();

		// model->updateActions(); FIXME needed?

		// FIXME needed? xelection.update();

	} else 

	{ // No MapObj found, we are on the scene itself

		// Left Button	    move Pos of sceneView

		if (e->button() == Qt::LeftButton )

		{

			movingObj=NULL;	// move Content not Obj

			movingObj_start=e->globalPos();

			movingCont_start=QPointF (

				horizontalScrollBar()->value(),

				verticalScrollBar()->value());

			movingVec=QPointF(0,0);

			setCursor(HandOpenCursor);

		} 

    } 

}

void MapEditor::mouseMoveEvent(QMouseEvent* e)

{

    QPointF p = mapToScene(e->pos());

	LinkableMapObj *lmosel=model->getSelectedLMO();

    // Move the selected MapObj

    if ( lmosel && movingObj) 

    {	

		// reset cursor if we are moving and don't copy

		if (mainWindow->getModMode()!=Main::ModModeCopy)

			setCursor (Qt::ArrowCursor);

		// To avoid jumping of the sceneView, only 

		// ensureSelectionVisible, if not tmp linked

		if (!lmosel->hasParObjTmp())

			model->ensureSelectionVisible ();

		// Now move the selection, but add relative position 

		// (movingObj_start) where selection was chosen with 

		// mousepointer. (This avoids flickering resp. jumping 

		// of selection back to absPos)

		// Check if we could link 

		LinkableMapObj* lmo=model->findMapObj(p, lmosel);

		FloatObj *fio=model->getSelectedFloatImage();

		if (fio)

		{

			fio->move   (p.x() -movingObj_start.x(), p.y()-movingObj_start.y() );		

			fio->setRelPos();

			fio->updateLink(); //no need for reposition, if we update link here

			model->updateSelection();	// position has changed

			// Relink float to new mapcenter or branch, if shift is pressed	

			// Only relink, if selection really has a new parent

			if ( (e->modifiers()==Qt::ShiftModifier) && lmo &&

				( (typeid(*lmo)==typeid(BranchObj)) ||

				  (typeid(*lmo)==typeid(MapCenterObj)) ) &&

				( lmo != fio->getParObj())  

				)

			{

				if (typeid(*fio) == typeid(FloatImageObj) && 

				( (typeid(*lmo)==typeid(BranchObj) ||

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

				{

					// Also save the move which was done so far

					QString pold=qpointfToString(movingObj_orgRelPos);

					QString pnow=qpointfToString(fio->getRelPos());

					model->saveState(

						fio,

						"moveRel "+pold,

						fio,

						"moveRel "+pnow,

						QString("Move %1 to relative position %2").arg(model->getObjectName(fio)).arg(pnow));

					fio->getParObj()->requestReposition();

					model->reposition();

					model->linkFloatImageTo (model->getSelectString(lmo));

					//movingObj=lmosel;

					//movingObj_orgRelPos=lmosel->getRelPos();	

					model->reposition();

				}	

			}

		} else	

		{	// selection != a FloatObj

			if (lmosel->getDepth()==0)

			{

				// Move MapCenter

				if (e->buttons()== Qt::LeftButton && e->modifiers()==Qt::ShiftModifier) 

					((MapCenterObj*)lmosel)->moveAll(p.x() -movingObj_start.x(), p.y()-movingObj_start.y() );		

				else	

					lmosel->move   (p.x() -movingObj_start.x(), p.y()-movingObj_start.y() );		

				model->updateRelPositions();

			} else

			{	

				if (lmosel->getDepth()==1)

				{

					// Move mainbranch

					lmosel->move(p.x() -movingObj_start.x(), p.y()-movingObj_start.y() );		

					lmosel->setRelPos();

				} else

				{

					// Move ordinary branch

					if (lmosel->getOrientation() == LinkableMapObj::LeftOfCenter)

						// Add width of bbox here, otherwise alignRelTo will cause jumping around

						lmosel->move(p.x() -movingObj_start.x() , //lmosel->getBBox().width(), 

							p.y()-movingObj_start.y() +lmosel->getTopPad() );		

					else	

						lmosel->move(p.x() -movingObj_start.x(), p.y()-movingObj_start.y() -lmosel->getTopPad());

					lmosel->setRelPos();	

				} 

				// Maybe we can relink temporary?

				if (lmo && (lmo!=lmosel) && model->getSelectedBranch() && 

					 (typeid(*lmo)==typeid(BranchObj) ||

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

				{

					if (e->modifiers()==Qt::ControlModifier)

					{

						// Special case: CTRL to link below lmo

						lmosel->setParObjTmp (lmo,p,+1);

					}

					else if (e->modifiers()==Qt::ShiftModifier)

						lmosel->setParObjTmp (lmo,p,-1);

					else

						lmosel->setParObjTmp (lmo,p,0);

				} else	

				{

					lmosel->unsetParObjTmp();

				}		

				// reposition subbranch

				lmosel->reposition();	

			} // depth>0

			QItemSelection sel=model->getSelectionModel()->selection();

			updateSelection(sel,sel);	// position has changed

		} // no FloatImageObj

		scene()->update();

		return;

	} // selection && moving_obj

	// Draw a link from one branch to another

	if (drawingLink)

	{

		 tmpXLink->setEnd (p);

		 tmpXLink->updateXLink();

	}	 

    // Move sceneView 

    if (!movingObj && !pickingColor &&!drawingLink && e->buttons() == Qt::LeftButton ) 

	{

		QPointF p=e->globalPos();

		movingVec.setX(-p.x() + movingObj_start.x() );

		movingVec.setY(-p.y() + movingObj_start.y() );

		horizontalScrollBar()->setSliderPosition((int)( movingCont_start.x()+movingVec.x() ));

		verticalScrollBar()->setSliderPosition((int)( movingCont_start.y()+movingVec.y() ) );

    }

}

void MapEditor::mouseReleaseEvent(QMouseEvent* e)

{

    QPointF p = mapToScene(e->pos());

	LinkableMapObj *dst;

	LinkableMapObj *lmosel=model->getSelectedLMO();

	// Have we been picking color?

	if (pickingColor)

	{

		pickingColor=false;

		setCursor (Qt::ArrowCursor);

		// Check if we are over another branch

		dst=model->findMapObj(p, NULL);

		if (dst && lmosel) 

		{	

			if (e->state() & Qt::ShiftModifier)

				model->colorBranch (((BranchObj*)dst)->getColor());

			else	

				model->colorSubtree (((BranchObj*)dst)->getColor());

		} 

		return;

	}

	// Have we been drawing a link?

	if (drawingLink)	

	{

		drawingLink=false;

		// Check if we are over another branch

		dst=model->findMapObj(p, NULL);

		if (dst && lmosel) 

		{	

			tmpXLink->setEnd ( ((BranchObj*)(dst)) );

			tmpXLink->updateXLink();

			tmpXLink->activate(); //FIXME savestate missing

			//model->saveStateComplete(QString("Activate xLink from %1 to %2").arg(model->getObjectName(tmpXLink->getBegin())).arg(model->getObjectName(tmpXLink->getEnd())) );	

		} else

		{

			delete(tmpXLink);

			tmpXLink=NULL;

		}

		return;

	}

    // Have we been moving something?

    if ( lmosel && movingObj ) 

    {	

		FloatImageObj *fo=model->getSelectedFloatImage();

		if(fo)

		{

			// Moved FloatObj. Maybe we need to reposition

		    QString pold=qpointfToString(movingObj_orgRelPos);

		    QString pnow=qpointfToString(fo->getRelPos());

			model->saveState(

				fo,

				"moveRel "+pold,

				fo,

				"moveRel "+pnow,

				QString("Move %1 to relative position %2").arg(model->getObjectName(fo)).arg(pnow));

			fo->getParObj()->requestReposition();

			model->reposition();

		}	

		// Check if we are over another branch, but ignore 

		// any found LMOs, which are FloatObjs

		dst=model->findMapObj(mapToScene(e->pos() ), lmosel);

		if (dst && (typeid(*dst)!=typeid(BranchObj) && typeid(*dst)!=typeid(MapCenterObj))) 

			dst=NULL;

		BranchObj *bo=model->getSelectedBranch();

		if (bo && bo->getDepth()==0)

		{	

            if (movingObj_orgPos != bo->getAbsPos())

            {

                QString pold=qpointfToString(movingObj_orgPos);

                QString pnow=qpointfToString(bo->getAbsPos());

                model->saveState(

                    bo,

                    "move "+pold,

                    bo,

                    "move "+pnow,

                    QString("Move mapcenter %1 to position %2").arg(model->getObjectName(bo)).arg(pnow));

            }

		}

		if (model->selectionType() == TreeItem::Branch )

		{	// A branch was moved

			// save the position in case we link to mapcenter

			QPointF savePos=QPointF (lmosel->getAbsPos()  );

			// Reset the temporary drawn link to the original one

			lmosel->unsetParObjTmp();

			// For Redo we may need to save original selection

			QString preSelStr=model->getSelectString(lmosel);

			copyingObj=false;	

			if (dst ) 

			{

				// We have a destination, relink to that

				BranchObj* bsel=model->getSelectedBranch();

				BranchObj* bdst=(BranchObj*)dst;

				QString preParStr=model->getSelectString (bsel->getParObj());

				QString preNum=QString::number (bsel->getNum(),10);

				QString preDstParStr;

				if (e->state() & Qt::ShiftModifier && dst->getParObj())

				{	// Link above dst

					preDstParStr=model->getSelectString (dst->getParObj());

					bsel->linkTo ( (BranchObj*)(bdst->getParObj()), bdst->getNum());

				} else 

				if (e->state() & Qt::ControlModifier && dst->getParObj())

				{

					// Link below dst

					preDstParStr=model->getSelectString (dst->getParObj());

					bsel->linkTo ( (BranchObj*)(bdst->getParObj()), bdst->getNum()+1);

				} else	

				{	// Append to dst

					preDstParStr=model->getSelectString(dst);

					bsel->linkTo (bdst,-1);

					if (dst->getDepth()==0) bsel->move (savePos);

				} 

				QString postSelStr=model->getSelectString(lmosel);

				QString postNum=QString::number (bsel->getNum(),10);

				QString undoCom="linkTo (\""+ 

					preParStr+ "\"," + preNum  +"," + 

					QString ("%1,%2").arg(movingObj_orgPos.x()).arg(movingObj_orgPos.y())+ ")";

				QString redoCom="linkTo (\""+ 

					preDstParStr + "\"," + postNum + "," +

					QString ("%1,%2").arg(savePos.x()).arg(savePos.y())+ ")";

				model->saveState (

					postSelStr,undoCom,

					preSelStr, redoCom,

					QString("Relink %1 to %2").arg(model->getObjectName(bsel)).arg(model->getObjectName(dst)) );

				model->reposition();	// not necessary if we undo temporary move  below

			} else

			{

				// No destination, undo  temporary move

				if (lmosel->getDepth()==1)

				{

					// The select string might be different _after_ moving around.

					// Therefor reposition and then use string of old selection, too

					model->reposition();

                    QPointF rp(lmosel->getRelPos());

                    if (rp != movingObj_orgRelPos)

                    {

                        QString ps=qpointfToString(rp);

                        model->saveState(

                            model->getSelectString(lmosel), "moveRel "+qpointfToString(movingObj_orgRelPos), 

                            preSelStr, "moveRel "+ps, 

                            QString("Move %1 to relative position %2").arg(model->getObjectName(lmosel)).arg(ps));

                    }

				}

				// Draw the original link, before selection was moved around

				if (settings.value("/animation/use",false).toBool() && lmosel->getDepth()>1) 

				{

					lmosel->setRelPos();	// calc relPos first for starting point

					QPointF dst=bo->getParObj()->getChildPos();

			//		if (lmosel->getOrientation()==LinkableMapObj::LeftOfCenter) dst.setX (dst.x()+lmosel->width() );

					model->startAnimation(

						(BranchObj*)lmosel,

						lmosel->getRelPos(),

						movingObj_orgRelPos

//						QPointF (movingObj_orgPos.x() - dst.x(), movingObj_orgPos.y() - dst.y() )

					);	

				} else	

					model->reposition();

			}

		}

		model->updateSelection();  //FIXME needed? at least not after pos of selection has changed...

		// Finally resize scene, if needed

		scene()->update();

		movingObj=NULL;		

		// Just make sure, that actions are still ok,e.g. the move branch up/down buttons...

		// model->updateActions(); FIXME neeeded? 

	} else 

		// maybe we moved View: set old cursor

		setCursor (Qt::ArrowCursor);

}

void MapEditor::mouseDoubleClickEvent(QMouseEvent* e)

{

	if (model->isSelectionBlocked() ) 

	{

		e->ignore();

		return;

	}

	if (e->button() == Qt::LeftButton )

	{

		QPointF p = mapToScene(e->pos());

		LinkableMapObj *lmo=model->findMapObj(p, NULL);

		if (lmo) {	// MapObj was found

			// First select the MapObj than edit heading

			model->select (lmo);

			editHeading();

		}

	}

}

void MapEditor::resizeEvent (QResizeEvent* e)

{

	QGraphicsView::resizeEvent( e );

}

void MapEditor::dragEnterEvent(QDragEnterEvent *event)

{

	//for (unsigned int i=0;event->format(i);i++) // Debug mime type

	//	cerr << event->format(i) << endl;

	if (event->mimeData()->hasImage())