/***************************************************************************
                          timetableviewteacherstimehorizontalform.cpp  -  description
                             -------------------
    begin                : 2017
    copyright            : (C) 2017 by Lalescu Liviu
    email                : Please see https://lalescu.ro/liviu/ for details about contacting Liviu Lalescu (in particular, you can find here the e-mail address)
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software: you can redistribute it and/or modify  *
 *   it under the terms of the GNU Affero General Public License as        *
 *   published by the Free Software Foundation, either version 3 of the    *
 *   License, or (at your option) any later version.                       *
 *                                                                         *
 ***************************************************************************/

#include <QtGlobal>

#include "tablewidgetupdatebug.h"

#include "longtextmessagebox.h"

#include "fetmainform.h"
#include "timetableviewteacherstimehorizontalform.h"
#include "timetable_defs.h"
#include "timetable.h"
#include "solution.h"

#include "fet.h"

#include "matrix.h"

#include "lockunlock.h"

#include <QMessageBox>

#include <QTableWidget>
#include <QTableWidgetItem>
#include <QHeaderView>

#include <QAbstractItemView>

#include <QListWidget>

#include <QList>

#include <QCoreApplication>
#include <QApplication>

#include <QString>
#include <QStringList>

#include <QSplitter>
#include <QSettings>
#include <QObject>
#include <QMetaObject>

//begin by Marco Vassura
#include <QBrush>
#include <QColor>
//end by Marco Vassura

extern const QString COMPANY;
extern const QString PROGRAM;

extern bool students_schedule_ready;
extern bool teachers_schedule_ready;

extern Solution best_solution;

extern bool simulation_running;

extern Matrix3D<bool> teacherNotAvailableDayHour;
extern Matrix2D<bool> breakDayHour;

extern QSet<int> idsOfLockedTime;		//care about locked activities in view forms
extern QSet<int> idsOfLockedSpace;		//care about locked activities in view forms
extern QSet<int> idsOfPermanentlyLockedTime;	//care about locked activities in view forms
extern QSet<int> idsOfPermanentlyLockedSpace;	//care about locked activities in view forms

extern CommunicationSpinBox communicationSpinBox;	//small hint to sync the forms

extern const int MINIMUM_WIDTH_SPIN_BOX_VALUE;
extern const int MINIMUM_HEIGHT_SPIN_BOX_VALUE;

void TimetableViewTeachersTimeHorizontalDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const
{
	QStyledItemDelegate::paint(painter, option, index);

	//int day=index.column()/gt.rules.nHoursPerDay;
	int hour=index.column()%gt.rules.nHoursPerDay;

	/*if(day>=0 && day<gt.rules.nDaysPerWeek-1 && hour==gt.rules.nHoursPerDay-1){
		QPen pen(painter->pen());
		pen.setWidth(2);
		painter->setPen(pen);
		painter->drawLine(option.rect.topRight(), option.rect.bottomRight());
	}*/
	
	/*assert(table!=NULL);
	QBrush bg(table->item(index.row(), index.column())->background());
	QPen pen(painter->pen());

	double brightness = bg.color().redF()*0.299 + bg.color().greenF()*0.587 + bg.color().blueF()*0.114;
	if (brightness<0.5)
		pen.setColor(Qt::white);
	else
		pen.setColor(Qt::black);

	painter->setPen(pen);*/
	
	if(hour==0)
		painter->drawLine(option.rect.topLeft(), option.rect.bottomLeft());
	if(hour==nColumns-1)
		painter->drawLine(option.rect.topRight(), option.rect.bottomRight());

	if(index.row()==0)
		painter->drawLine(option.rect.topLeft(), option.rect.topRight());
	if(index.row()==nRows-1)
		painter->drawLine(option.rect.bottomLeft(), option.rect.bottomRight());
}


TimetableViewTeachersTimeHorizontalForm::TimetableViewTeachersTimeHorizontalForm(QWidget* parent): QDialog(parent)
{
	setupUi(this);
	
	closePushButton->setDefault(true);
	
	detailsTextEdit->setReadOnly(true);

	//columnResizeModeInitialized=false;

	verticalSplitter->setStretchFactor(0, 20);
	verticalSplitter->setStretchFactor(1, 1);
	horizontalSplitter->setStretchFactor(0, 5);
	horizontalSplitter->setStretchFactor(1, 1);

	teachersTimetableTable->setSelectionMode(QAbstractItemView::ExtendedSelection);
	
	connect(closePushButton, SIGNAL(clicked()), this, SLOT(close()));
	connect(teachersTimetableTable, SIGNAL(currentItemChanged(QTableWidgetItem*, QTableWidgetItem*)), this, SLOT(currentItemChanged(QTableWidgetItem*, QTableWidgetItem*)));
	connect(lockTimePushButton, SIGNAL(clicked()), this, SLOT(lockTime()));
	connect(lockSpacePushButton, SIGNAL(clicked()), this, SLOT(lockSpace()));
	connect(lockTimeSpacePushButton, SIGNAL(clicked()), this, SLOT(lockTimeSpace()));

	connect(helpPushButton, SIGNAL(clicked()), this, SLOT(help()));
	
	lockRadioButton->setChecked(true);
	unlockRadioButton->setChecked(false);
	toggleRadioButton->setChecked(false);

	centerWidgetOnScreen(this);
	restoreFETDialogGeometry(this);

	//restore vertical splitter state
	QSettings settings(COMPANY, PROGRAM);
	if(settings.contains(this->metaObject()->className()+QString("/vertical-splitter-state")))
		verticalSplitter->restoreState(settings.value(this->metaObject()->className()+QString("/vertical-splitter-state")).toByteArray());

	//restore horizontal splitter state
	//QSettings settings(COMPANY, PROGRAM);
	if(settings.contains(this->metaObject()->className()+QString("/horizontal-splitter-state")))
		horizontalSplitter->restoreState(settings.value(this->metaObject()->className()+QString("/horizontal-splitter-state")).toByteArray());

	if(settings.contains(this->metaObject()->className()+QString("/lock-radio-button")))
		lockRadioButton->setChecked(settings.value(this->metaObject()->className()+QString("/lock-radio-button")).toBool());
	if(settings.contains(this->metaObject()->className()+QString("/unlock-radio-button")))
		unlockRadioButton->setChecked(settings.value(this->metaObject()->className()+QString("/unlock-radio-button")).toBool());
	if(settings.contains(this->metaObject()->className()+QString("/toggle-radio-button")))
		toggleRadioButton->setChecked(settings.value(this->metaObject()->className()+QString("/toggle-radio-button")).toBool());

///////////just for testing
	QSet<int> backupLockedTime;
	QSet<int> backupPermanentlyLockedTime;
	QSet<int> backupLockedSpace;
	QSet<int> backupPermanentlyLockedSpace;
	
	backupLockedTime=idsOfLockedTime;
	backupPermanentlyLockedTime=idsOfPermanentlyLockedTime;
	backupLockedSpace=idsOfLockedSpace;
	backupPermanentlyLockedSpace=idsOfPermanentlyLockedSpace;
	
	//added by Volker Dirr
	//these 2 lines are not really needed - just to be safer
	LockUnlock::computeLockedUnlockedActivitiesTimeSpace();
	
	assert(backupLockedTime==idsOfLockedTime);
	assert(backupPermanentlyLockedTime==idsOfPermanentlyLockedTime);
	assert(backupLockedSpace==idsOfLockedSpace);
	assert(backupPermanentlyLockedSpace==idsOfPermanentlyLockedSpace);
///////////

	if(gt.rules.nInternalTeachers!=gt.rules.teachersList.count()){
		assert(0); //should be taken care of by Rules - teachers_schedule_ready is false in the Rules if adding or removing teachers.

		initialRecommendedHeight=10;

		oldItemDelegate=teachersTimetableTable->itemDelegate();
		newItemDelegate=new TimetableViewTeachersTimeHorizontalDelegate(NULL, 1, 1);
		teachersTimetableTable->setItemDelegate(newItemDelegate);

		QMessageBox::warning(this, tr("FET warning"), tr("Cannot display the timetable, because you added or removed some teachers. Please regenerate the timetable and then view it"));
		return;
	}

	LockUnlock::increaseCommunicationSpinBox();
	
	teachersTimetableTable->setRowCount(gt.rules.nInternalTeachers);
	teachersTimetableTable->setColumnCount(gt.rules.nDaysPerWeek*gt.rules.nHoursPerDay);
	
	oldItemDelegate=teachersTimetableTable->itemDelegate();
	newItemDelegate=new TimetableViewTeachersTimeHorizontalDelegate(NULL, teachersTimetableTable->rowCount(), gt.rules.nHoursPerDay);
	teachersTimetableTable->setItemDelegate(newItemDelegate);
	
	bool min2letters=false;
	for(int d=0; d<gt.rules.nDaysPerWeek; d++){
		if(gt.rules.daysOfTheWeek[d].size()>gt.rules.nHoursPerDay){
			min2letters=true;
			break;
		}
	}
	//QMessageBox::information(this, "", QString::number(min2letters));
	for(int d=0; d<gt.rules.nDaysPerWeek; d++){
		QString dayName=gt.rules.daysOfTheWeek[d];
		int t=dayName.size();
		int q=t/gt.rules.nHoursPerDay;
		int r=t%gt.rules.nHoursPerDay;
		QStringList list;
		
		if(q==0)
			q=1;
		
		for(int i=0; i<gt.rules.nHoursPerDay; i++){
			if(!min2letters){
				list.append(dayName.left(1));
				dayName.remove(0, 1);
			}
			else if(i<r || q<=1){
				assert(q>=1);
				list.append(dayName.left(q+1));
				dayName.remove(0, q+1);
			}
			else{
				list.append(dayName.left(q));
				dayName.remove(0, q);
			}
		}
	
		for(int h=0; h<gt.rules.nHoursPerDay; h++){
			QTableWidgetItem* item=new QTableWidgetItem(list.at(h)+"\n"+gt.rules.hoursOfTheDay[h]);
			item->setToolTip(gt.rules.daysOfTheWeek[d]+"\n"+gt.rules.hoursOfTheDay[h]);
			teachersTimetableTable->setHorizontalHeaderItem(d*gt.rules.nHoursPerDay+h, item);
		}
	}
	for(int t=0; t<gt.rules.nInternalTeachers; t++){
		QTableWidgetItem* item=new QTableWidgetItem(gt.rules.internalTeachersList[t]->name);
		item->setToolTip(gt.rules.internalTeachersList[t]->name);
		teachersTimetableTable->setVerticalHeaderItem(t, item);
	}

	for(int t=0; t<gt.rules.nInternalTeachers; t++){
		for(int d=0; d<gt.rules.nDaysPerWeek; d++){
			for(int h=0; h<gt.rules.nHoursPerDay; h++){
				QTableWidgetItem* item= new QTableWidgetItem();
				item->setTextAlignment(Qt::AlignCenter);
				item->setFlags(Qt::ItemIsSelectable|Qt::ItemIsEnabled);

				teachersTimetableTable->setItem(t, d*gt.rules.nHoursPerDay+h, item);
			}
		}
	}
	
	//resize columns
	//if(!columnResizeModeInitialized){
//	teachersTimetableTable->horizontalHeader()->setMinimumSectionSize(teachersTimetableTable->horizontalHeader()->defaultSectionSize());
	//	columnResizeModeInitialized=true;
	
	initialRecommendedHeight=teachersTimetableTable->verticalHeader()->sectionSizeHint(0);
	
	int h;
	int w;

	if(settings.contains(this->metaObject()->className()+QString("/vertical-header-size"))){
		h=settings.value(this->metaObject()->className()+QString("/vertical-header-size")).toInt();
		if(h==0)
			h=MINIMUM_HEIGHT_SPIN_BOX_VALUE;
	}
	else{
		h=MINIMUM_HEIGHT_SPIN_BOX_VALUE;
	}
//	if(h==0)
//		h=initialRecommendedHeight;

	if(settings.contains(this->metaObject()->className()+QString("/horizontal-header-size"))){
		w=settings.value(this->metaObject()->className()+QString("/horizontal-header-size")).toInt();
		if(w==0)
			w=MINIMUM_WIDTH_SPIN_BOX_VALUE;
	}
	else{
		w=MINIMUM_WIDTH_SPIN_BOX_VALUE;
	}
//	if(w==0)
//		w=2*initialRecommendedHeight;
		
	widthSpinBox->setSuffix(QString(" ")+tr("px", "Abbreviation for pixels"));
	widthSpinBox->setMinimum(MINIMUM_WIDTH_SPIN_BOX_VALUE);
#if QT_VERSION >= 0x050200
	widthSpinBox->setMaximum(teachersTimetableTable->verticalHeader()->maximumSectionSize());
#else
	widthSpinBox->setMaximum(maxScreenWidth(this));
#endif
	widthSpinBox->setValue(w);
	widthSpinBox->setSpecialValueText(tr("Automatic"));
	
	heightSpinBox->setSuffix(QString(" ")+tr("px", "Abbreviation for pixels"));
	heightSpinBox->setMinimum(MINIMUM_HEIGHT_SPIN_BOX_VALUE);
#if QT_VERSION >= 0x050200
	heightSpinBox->setMaximum(teachersTimetableTable->verticalHeader()->maximumSectionSize());
#else
	heightSpinBox->setMaximum(maxScreenWidth(this));
#endif
	heightSpinBox->setValue(h);
	heightSpinBox->setSpecialValueText(tr("Automatic"));
	
	widthSpinBoxValueChanged();
	heightSpinBoxValueChanged();
	
	connect(widthSpinBox, SIGNAL(valueChanged(int)), this, SLOT(widthSpinBoxValueChanged()));
	connect(heightSpinBox, SIGNAL(valueChanged(int)), this, SLOT(heightSpinBoxValueChanged()));
	
//	teachersTimetableTable->verticalHeader()->setDefaultSectionSize(h);
//	teachersTimetableTable->horizontalHeader()->setDefaultSectionSize(w);

#if QT_VERSION >= 0x050000
	teachersTimetableTable->verticalHeader()->setSectionResizeMode(QHeaderView::Interactive);
	teachersTimetableTable->horizontalHeader()->setSectionResizeMode(QHeaderView::Interactive);
#else
	teachersTimetableTable->verticalHeader()->setResizeMode(QHeaderView::Interactive);
	teachersTimetableTable->horizontalHeader()->setResizeMode(QHeaderView::Interactive);
#endif
	//}
	////////////////
	
	subjectsCheckBox->setChecked(true);
	studentsCheckBox->setChecked(true);
	
	if(settings.contains(this->metaObject()->className()+QString("/subjects-check-box-state"))){
		bool state=settings.value(this->metaObject()->className()+QString("/subjects-check-box-state")).toBool();
		subjectsCheckBox->setChecked(state);
	}
	if(settings.contains(this->metaObject()->className()+QString("/students-check-box-state"))){
		bool state=settings.value(this->metaObject()->className()+QString("/students-check-box-state")).toBool();
		studentsCheckBox->setChecked(state);
	}
	
	connect(subjectsCheckBox, SIGNAL(toggled(bool)), this, SLOT(updateTeachersTimetableTable()));
	connect(studentsCheckBox, SIGNAL(toggled(bool)), this, SLOT(updateTeachersTimetableTable()));
	
	//added by Volker Dirr
	connect(&communicationSpinBox, SIGNAL(valueChanged(int)), this, SLOT(updateTeachersTimetableTable()));
	
	updateTeachersTimetableTable();
}

TimetableViewTeachersTimeHorizontalForm::~TimetableViewTeachersTimeHorizontalForm()
{
	saveFETDialogGeometry(this);

	//save vertical splitter state
	QSettings settings(COMPANY, PROGRAM);
	settings.setValue(this->metaObject()->className()+QString("/vertical-splitter-state"), verticalSplitter->saveState());

	//save horizontal splitter state
	//QSettings settings(COMPANY, PROGRAM);
	settings.setValue(this->metaObject()->className()+QString("/horizontal-splitter-state"), horizontalSplitter->saveState());

	settings.setValue(this->metaObject()->className()+QString("/lock-radio-button"), lockRadioButton->isChecked());
	settings.setValue(this->metaObject()->className()+QString("/unlock-radio-button"), unlockRadioButton->isChecked());
	settings.setValue(this->metaObject()->className()+QString("/toggle-radio-button"), toggleRadioButton->isChecked());

	if(heightSpinBox->value()<=MINIMUM_HEIGHT_SPIN_BOX_VALUE)
		settings.setValue(this->metaObject()->className()+QString("/vertical-header-size"), 0);
	else
		settings.setValue(this->metaObject()->className()+QString("/vertical-header-size"), heightSpinBox->value());
		
	if(widthSpinBox->value()<=MINIMUM_WIDTH_SPIN_BOX_VALUE)
		settings.setValue(this->metaObject()->className()+QString("/horizontal-header-size"), 0);
	else
		settings.setValue(this->metaObject()->className()+QString("/horizontal-header-size"), widthSpinBox->value());
		
	settings.setValue(this->metaObject()->className()+QString("/subjects-check-box-state"), subjectsCheckBox->isChecked());
	settings.setValue(this->metaObject()->className()+QString("/students-check-box-state"), studentsCheckBox->isChecked());
		
	teachersTimetableTable->setItemDelegate(oldItemDelegate);
	delete newItemDelegate;
}

void TimetableViewTeachersTimeHorizontalForm::resizeRowsAfterShow()
{
//	teachersTimetableTable->resizeRowsToContents();
}

void TimetableViewTeachersTimeHorizontalForm::updateTeachersTimetableTable(){
	if(!(students_schedule_ready && teachers_schedule_ready)){
		QMessageBox::warning(this, tr("FET warning"), tr("Timetable not available in view teachers timetable dialog - please generate a new timetable "
		"or close the timetable view teachers dialog"));
		return;
	}
	assert(students_schedule_ready && teachers_schedule_ready);

	if(gt.rules.nInternalRooms!=gt.rules.roomsList.count()){
		QMessageBox::warning(this, tr("FET warning"), tr("Cannot display the timetable, because you added or removed some rooms. Please regenerate the timetable and then view it"));
		return;
	}

	assert(gt.rules.initialized);
	
	for(int t=0; t<gt.rules.nInternalTeachers; t++){
		assert(t<teachersTimetableTable->rowCount());
		for(int d=0; d<gt.rules.nDaysPerWeek; d++){
			for(int h=0; h<gt.rules.nHoursPerDay; h++){
				assert(d*gt.rules.nHoursPerDay+h<teachersTimetableTable->columnCount());

				//begin by Marco Vassura
				// add colors (start)
				//if(USE_GUI_COLORS) {
					teachersTimetableTable->item(t, d*gt.rules.nHoursPerDay+h)->setBackground(teachersTimetableTable->palette().color(QPalette::Base));
					teachersTimetableTable->item(t, d*gt.rules.nHoursPerDay+h)->setForeground(teachersTimetableTable->palette().color(QPalette::Text));
				//}
				// add colors (end)
				//end by Marco Vassura

				QString s = "";
				QString shortString="";
				int ai=teachers_timetable_weekly[t][d][h]; //activity index
				//Activity* act=gt.rules.activitiesList.at(ai);
				if(ai!=UNALLOCATED_ACTIVITY){
					Activity* act=&gt.rules.internalActivitiesList[ai];
					assert(act!=NULL);
					
					if(TIMETABLE_HTML_PRINT_ACTIVITY_TAGS){
						QString ats=act->activityTagsNames.join(", ");
						s += act->subjectName+" "+ats;
					}
					else{
						s += act->subjectName;
					}
					
					//students
					if(act->studentsNames.count()>0){
						//s+=" ";
						s+="\n";
						s+=act->studentsNames.join(", ");
						
						if(studentsCheckBox->isChecked()){
							shortString+=act->studentsNames.join(", ");
						}
					}
					
					if(subjectsCheckBox->isChecked()){
						if(!shortString.isEmpty()){
							shortString+=" ";
							//shortString+="\n";
						}
						shortString+=act->subjectName;
					}
					
					if(act->teachersNames.count()==1){
						//Don't do the assert below, because it crashes if you change the teacher's name and view the teachers' timetable,
						//without generating again (as reported by Yush Yuen).
						//assert(act->teachersNames.at(0)==teachername);
					}
					else{
						assert(act->teachersNames.count()>=2);
						//Don't do the assert below, because it crashes if you change the teacher's name and view the teachers' timetable,
						//without generating again (as reported by Yush Yuen).
						//assert(act->teachersNames.contains(teachername));
						//s+=" ";
						s+="\n";
						s+=act->teachersNames.join(", ");
					}
					
					int r=best_solution.rooms[ai];
					if(r!=UNALLOCATED_SPACE && r!=UNSPECIFIED_ROOM){
						//s+=" ";
						//s+=tr("R:%1", "Room").arg(gt.rules.internalRoomsList[r]->name);
						//s+=" ";
						s+="\n";
						s+=gt.rules.internalRoomsList[r]->name;
					}
					
					//added by Volker Dirr (start)
					QString descr="";
					QString tt="";
					if(idsOfPermanentlyLockedTime.contains(act->id)){
						descr+=QCoreApplication::translate("TimetableViewForm", "PLT", "Abbreviation for permanently locked time. There are 4 string: permanently locked time, permanently locked space, "
							"locked time, locked space. Make sure their abbreviations contain different letters and are visually different, so user can easily differentiate between them."
							" These abbreviations may appear also in other places, please use the same abbreviations.");
						tt=", ";
					}
					else if(idsOfLockedTime.contains(act->id)){
						descr+=QCoreApplication::translate("TimetableViewForm", "LT", "Abbreviation for locked time. There are 4 string: permanently locked time, permanently locked space, "
						"locked time, locked space. Make sure their abbreviations contain different letters and are visually different, so user can easily differentiate between them."
							" These abbreviations may appear also in other places, please use the same abbreviations.");
						tt=", ";
					}
					if(idsOfPermanentlyLockedSpace.contains(act->id)){
						descr+=tt+QCoreApplication::translate("TimetableViewForm", "PLS", "Abbreviation for permanently locked space. There are 4 string: permanently locked time, permanently locked space, "
							"locked time, locked space. Make sure their abbreviations contain different letters and are visually different, so user can easily differentiate between them."
							" These abbreviations may appear also in other places, please use the same abbreviations.");
					}
					else if(idsOfLockedSpace.contains(act->id)){
						descr+=tt+QCoreApplication::translate("TimetableViewForm", "LS", "Abbreviation for locked space. There are 4 string: permanently locked time, permanently locked space, "
							"locked time, locked space. Make sure their abbreviations contain different letters and are visually different, so user can easily differentiate between them."
							" These abbreviations may appear also in other places, please use the same abbreviations.");
					}
					if(descr!=""){
						descr.prepend("\n(");
						//descr.prepend(" ");
						descr.append(")");
					}

					if(idsOfPermanentlyLockedTime.contains(act->id) || idsOfLockedTime.contains(act->id)){
						QFont font(teachersTimetableTable->item(t, d*gt.rules.nHoursPerDay+h)->font());
						font.setBold(true);
						teachersTimetableTable->item(t, d*gt.rules.nHoursPerDay+h)->setFont(font);
					}
					else{
						QFont font(teachersTimetableTable->item(t, d*gt.rules.nHoursPerDay+h)->font());
						font.setBold(false);
						teachersTimetableTable->item(t, d*gt.rules.nHoursPerDay+h)->setFont(font);
					}
					
					if(idsOfPermanentlyLockedSpace.contains(act->id) || idsOfLockedSpace.contains(act->id)){
						QFont font(teachersTimetableTable->item(t, d*gt.rules.nHoursPerDay+h)->font());
						font.setItalic(true);
						teachersTimetableTable->item(t, d*gt.rules.nHoursPerDay+h)->setFont(font);
					}
					else{
						QFont font(teachersTimetableTable->item(t, d*gt.rules.nHoursPerDay+h)->font());
						font.setItalic(false);
						teachersTimetableTable->item(t, d*gt.rules.nHoursPerDay+h)->setFont(font);
					}

					s+=descr;
					//added by Volker Dirr (end)
				
					//begin by Marco Vassura
					// add colors (start)
					if(USE_GUI_COLORS /*&& act->studentsNames.count()>0*/){
						QBrush bg(stringToColor(act->subjectName+" "+act->studentsNames.join(", ")));
						teachersTimetableTable->item(t, d*gt.rules.nHoursPerDay+h)->setBackground(bg);
						double brightness = bg.color().redF()*0.299 + bg.color().greenF()*0.587 + bg.color().blueF()*0.114;
						if (brightness<0.5)
							teachersTimetableTable->item(t, d*gt.rules.nHoursPerDay+h)->setForeground(QBrush(Qt::white));
						else
							teachersTimetableTable->item(t, d*gt.rules.nHoursPerDay+h)->setForeground(QBrush(Qt::black));
					}
					// add colors (end)
					//end by Marco Vassura
					teachersTimetableTable->item(t, d*gt.rules.nHoursPerDay+h)->setText(shortString);
				}
				else{
					if(teacherNotAvailableDayHour[t][d][h] && PRINT_NOT_AVAILABLE_TIME_SLOTS)
						s+="-x-";
					else if(breakDayHour[d][h] && PRINT_BREAK_TIME_SLOTS)
						s+="-X-";
					teachersTimetableTable->item(t, d*gt.rules.nHoursPerDay+h)->setText(s);
				}
				teachersTimetableTable->item(t, d*gt.rules.nHoursPerDay+h)->setToolTip(s);
			}
		}
	}
	//	for(int i=0; i<gt.rules.nHoursPerDay; i++) //added in version 3_9_16, on 16 Oct. 2004
	//		teachersTimetableTable->adjustRow(i);

//	teachersTimetableTable->resizeRowsToContents();
	
	tableWidgetUpdateBug(teachersTimetableTable);
	
	detailActivity(teachersTimetableTable->currentItem());
}

/*void TimetableViewTeachersTimeHorizontalForm::resizeEvent(QResizeEvent* event)
{
	QDialog::resizeEvent(event);

//	teachersTimetableTable->resizeRowsToContents();
}*/

//begin by Marco Vassura
QColor TimetableViewTeachersTimeHorizontalForm::stringToColor(QString s)
{
	// CRC-24 Based on RFC 2440 Section 6.1
	unsigned long crc = 0xB704CEL;
	int i;
	QChar *data = s.data();
	while (!data->isNull()) {
		crc ^= (data->unicode() & 0xFF) << 16;
		for (i = 0; i < 8; i++) {
			crc <<= 1;
			if (crc & 0x1000000)
				crc ^= 0x1864CFBL;
		}
		data++;
	}
	return QColor::fromRgb((int)(crc>>16), (int)((crc>>8) & 0xFF), (int)(crc & 0xFF));
}
//end by Marco Vassura

void TimetableViewTeachersTimeHorizontalForm::currentItemChanged(QTableWidgetItem* current, QTableWidgetItem* previous)
{
	Q_UNUSED(previous);
	
	detailActivity(current);
}

void TimetableViewTeachersTimeHorizontalForm::detailActivity(QTableWidgetItem* item){
	if(item==NULL){
		detailsTextEdit->setPlainText(QString(""));
		return;
	}

	if(!(students_schedule_ready && teachers_schedule_ready)){
		QMessageBox::warning(this, tr("FET warning"), tr("Timetable not available in view teachers timetable dialog - please generate a new timetable"));
		return;
	}
	assert(students_schedule_ready && teachers_schedule_ready);

	if(item->row()>=gt.rules.nInternalTeachers || item->column()>=gt.rules.nDaysPerWeek*gt.rules.nHoursPerDay){
		QMessageBox::warning(this, tr("FET warning"), tr("Timetable not available in view teachers timetable dialog - please generate a new timetable "
		"or close the timetable view teachers dialog"));
		return;
	}

	if(gt.rules.nInternalRooms!=gt.rules.roomsList.count()){
		QMessageBox::warning(this, tr("FET warning"), tr("Cannot display the timetable, because you added or removed some rooms. Please regenerate the timetable and then view it"));
		return;
	}
	
	assert(item->row()>=0);
	assert(item->column()>=0);

	int t=item->row();
	
	if(gt.rules.nInternalTeachers!=gt.rules.teachersList.count()){
		QMessageBox::warning(this, tr("FET warning"), tr("Cannot display the timetable, because you added or removed some teachers. Please regenerate the timetable and then view it"));
		return;
	}

	int d=item->column()/gt.rules.nHoursPerDay;
	int h=item->column()%gt.rules.nHoursPerDay;

	int teacher=gt.rules.searchTeacher(gt.rules.internalTeachersList[t]->name);
	if(teacher<0){
		QMessageBox::warning(this, tr("FET warning"), tr("The teacher is invalid - please close this dialog and open a new view teachers timetable"));
		return;
	}
	else{
		QString s = "";
		if(d>=0 && d<gt.rules.nDaysPerWeek && h>=0 && h<gt.rules.nHoursPerDay){
			int ai=teachers_timetable_weekly[t][d][h]; //activity index
			//Activity* act=gt.rules.activitiesList.at(ai);
			if(ai!=UNALLOCATED_ACTIVITY){
				Activity* act=&gt.rules.internalActivitiesList[ai];
				assert(act!=NULL);
				//s += act->getDetailedDescriptionWithConstraints(gt.rules);
				s += act->getDetailedDescription(gt.rules);

				//int r=rooms_timetable_weekly[teacher][k][j];
				int r=best_solution.rooms[ai];
				if(r!=UNALLOCATED_SPACE && r!=UNSPECIFIED_ROOM){
					s+="\n";
					s+=tr("Room: %1").arg(gt.rules.internalRoomsList[r]->name);
				}
				//added by Volker Dirr (start)
				QString descr="";
				QString tt="";
				if(idsOfPermanentlyLockedTime.contains(act->id)){
					descr+=QCoreApplication::translate("TimetableViewForm", "permanently locked time", "refers to activity");
					tt=", ";
				}
				else if(idsOfLockedTime.contains(act->id)){
					descr+=QCoreApplication::translate("TimetableViewForm", "locked time", "refers to activity");
					tt=", ";
				}
				if(idsOfPermanentlyLockedSpace.contains(act->id)){
					descr+=tt+QCoreApplication::translate("TimetableViewForm", "permanently locked space", "refers to activity");
				}
				else if(idsOfLockedSpace.contains(act->id)){
					descr+=tt+QCoreApplication::translate("TimetableViewForm", "locked space", "refers to activity");
				}
				if(descr!=""){
					descr.prepend("\n(");
					descr.append(")");
				}
				s+=descr;
				//added by Volker Dirr (end)
			}
			else{
				if(teacherNotAvailableDayHour[t][d][h]){
					s+=tr("Teacher is not available 100% in this slot");
					s+="\n";
				}
				if(breakDayHour[d][h]){
					s+=tr("Break with weight 100% in this slot");
					s+="\n";
				}
			}
		}
		detailsTextEdit->setPlainText(s);
	}
}

void TimetableViewTeachersTimeHorizontalForm::lockTime()
{
	this->lock(true, false);
}
	
void TimetableViewTeachersTimeHorizontalForm::lockSpace()
{
	this->lock(false, true);
}

void TimetableViewTeachersTimeHorizontalForm::lockTimeSpace()
{
	this->lock(true, true);
}
			
void TimetableViewTeachersTimeHorizontalForm::lock(bool lockTime, bool lockSpace)
{
	//cout<<"teachers begin, isc="<<gt.rules.internalStructureComputed<<endl;

	if(simulation_running){
		QMessageBox::information(this, tr("FET information"),
			tr("Allocation in course.\nPlease stop simulation before this."));
		return;
	}

	if(!(students_schedule_ready && teachers_schedule_ready)){
		QMessageBox::warning(this, tr("FET warning"), tr("Timetable not available in view teachers timetable dialog - please generate a new timetable"));
		return;
	}
	assert(students_schedule_ready && teachers_schedule_ready);

	if(gt.rules.nInternalRooms!=gt.rules.roomsList.count()){
		QMessageBox::warning(this, tr("FET warning"), tr("Cannot display the timetable, because you added or removed some rooms. Please regenerate the timetable and then view it"));
		return;
	}

	Solution* tc=&best_solution;
	
	bool report=false; //the messages are annoying
	
	int addedT=0, unlockedT=0;
	int addedS=0, unlockedS=0;
	
	QSet<int> dummyActivitiesColumn; //Dummy activities (no teacher) column to be considered, because the whole column is selected.
	for(int d=0; d<gt.rules.nDaysPerWeek; d++){
		for(int h=0; h<gt.rules.nHoursPerDay; h++){
			assert(d*gt.rules.nHoursPerDay+h < teachersTimetableTable->columnCount());
			bool wholeColumn=true;
			for(int t=0; t<gt.rules.nInternalTeachers; t++){
				assert(t<teachersTimetableTable->rowCount());

				if(!teachersTimetableTable->item(t, d*gt.rules.nHoursPerDay+h)->isSelected()){
					wholeColumn=false;
					break;
				}
			}
			if(wholeColumn)
				dummyActivitiesColumn.insert(d+h*gt.rules.nDaysPerWeek);
		}
	}
	
	QSet<int> dummyActivities;
	for(int ai=0; ai<gt.rules.nInternalActivities; ai++){
		if(gt.rules.internalActivitiesList[ai].iTeachersList.count()==0){
			if(tc->times[ai]!=UNALLOCATED_TIME){
				int da=tc->times[ai]%gt.rules.nDaysPerWeek;
				int ha=tc->times[ai]/gt.rules.nDaysPerWeek;
				for(int ha2=ha; ha2<ha+gt.rules.internalActivitiesList[ai].duration; ha2++)
					if(dummyActivitiesColumn.contains(da+ha2*gt.rules.nDaysPerWeek))
						if(!dummyActivities.contains(ai))
							dummyActivities.insert(ai);
			}
		}
	}

	QSet<int> realActivities;
	for(int t=0; t<gt.rules.nInternalTeachers; t++){
		assert(t<teachersTimetableTable->rowCount());
		for(int d=0; d<gt.rules.nDaysPerWeek; d++){
			for(int h=0; h<gt.rules.nHoursPerDay; h++){
				assert(d*gt.rules.nHoursPerDay+h<teachersTimetableTable->columnCount());
				if(teachersTimetableTable->item(t, d*gt.rules.nHoursPerDay+h)->isSelected()){
					int ai=teachers_timetable_weekly[t][d][h];
					if(ai!=UNALLOCATED_ACTIVITY)
						if(!realActivities.contains(ai))
							realActivities.insert(ai);
				}
			}
		}
	}

	for(int ai=0; ai<gt.rules.nInternalActivities; ai++){
		assert( ! (realActivities.contains(ai) && dummyActivities.contains(ai)) );
		if(realActivities.contains(ai) || dummyActivities.contains(ai)){
			assert(tc->times[ai]!=UNALLOCATED_TIME);
			int day=tc->times[ai]%gt.rules.nDaysPerWeek;
			int hour=tc->times[ai]/gt.rules.nDaysPerWeek;

			Activity* act=&gt.rules.internalActivitiesList[ai];
			
			if(lockTime){
				QString s;
			
				QList<TimeConstraint*> tmptc;
				int count=0;

				foreach(ConstraintActivityPreferredStartingTime* c, gt.rules.apstHash.value(act->id, QSet<ConstraintActivityPreferredStartingTime*>())){
					assert(c->activityId==act->id);
					if(c->activityId==act->id && c->weightPercentage==100.0 && c->active && c->day>=0 && c->hour>=0){
						count++;
						if(c->permanentlyLocked){
							if(idsOfLockedTime.contains(c->activityId) || !idsOfPermanentlyLockedTime.contains(c->activityId)){
								QMessageBox::warning(this, tr("FET warning"), tr("Small problem detected")
									+"\n\n"+tr("A possible problem might be that you have 2 or more constraints of type activity preferred starting time with weight 100% related to activity id %1, please leave only one of them").arg(act->id)
									+"\n\n"+tr("A possible problem might be synchronization - so maybe try to close the timetable view dialog and open it again")
									+"\n\n"+tr("Please report possible bug")
									);
							}
							else{
								if(unlockRadioButton->isChecked() || toggleRadioButton->isChecked()){
									s+=tr("Constraint %1 will not be removed, because it is permanently locked. If you want to unlock it you must go to the constraints menu.").arg("\n"+c->getDetailedDescription(gt.rules)+"\n");
								}
							}
						}
						else{
							if(!idsOfLockedTime.contains(c->activityId) || idsOfPermanentlyLockedTime.contains(c->activityId)){
								QMessageBox::warning(this, tr("FET warning"), tr("Small problem detected")
									+"\n\n"+tr("A possible problem might be that you have 2 or more constraints of type activity preferred starting time with weight 100% related to activity id %1, please leave only one of them").arg(act->id)
									+"\n\n"+tr("A possible problem might be synchronization - so maybe try to close the timetable view dialog and open it again")
									+"\n\n"+tr("Please report possible bug")
									);
							}
							else{
								if(unlockRadioButton->isChecked() || toggleRadioButton->isChecked()){
									tmptc.append((TimeConstraint*)c);
								}
							}
						}
					}
				}
				if(count==0 && (lockRadioButton->isChecked() || toggleRadioButton->isChecked())){
					ConstraintActivityPreferredStartingTime* ctr=new ConstraintActivityPreferredStartingTime(100.0, act->id, day, hour, false);
					bool t=gt.rules.addTimeConstraint(ctr);
					QString s;
					if(t){
						addedT++;
						idsOfLockedTime.insert(act->id);
						s+=tr("Added the following constraint:")+"\n"+ctr->getDetailedDescription(gt.rules);
					}
					else{
						delete ctr;
						
						QMessageBox::warning(this, tr("FET warning"), tr("You may have a problem, because FET expected to add 1 constraint, but this is not possible. "
						 "Please report possible bug"));
					}
				}
				else if(count>=1 && (unlockRadioButton->isChecked() || toggleRadioButton->isChecked())){
					if(count>=2)
						QMessageBox::warning(this, tr("FET warning"), tr("You may have a problem, because FET expected to delete 1 constraint, but will delete %1 constraints").arg(tmptc.size()));

					foreach(TimeConstraint* deltc, tmptc){
						s+=tr("The following constraint will be deleted:")+"\n"+deltc->getDetailedDescription(gt.rules)+"\n";
						gt.rules.removeTimeConstraint(deltc);
						idsOfLockedTime.remove(act->id);
						unlockedT++;
						//delete deltc; - done by rules.removeTim...
					}
				}
				tmptc.clear();
				//gt.rules.internalStructureComputed=false;

				if(report){
					int k;
					k=QMessageBox::information(this, tr("FET information"), s,
						tr("Skip information"), tr("See next"), QString(), 1, 0 );

					if(k==0)
						report=false;
				}
			}
			
			int ri=tc->rooms[ai];
			if(ri!=UNALLOCATED_SPACE && ri!=UNSPECIFIED_ROOM && lockSpace){
				QString s;
				
				QList<SpaceConstraint*> tmpsc;
				int count=0;

				foreach(ConstraintActivityPreferredRoom* c, gt.rules.aprHash.value(act->id, QSet<ConstraintActivityPreferredRoom*>())){
					assert(c->activityId==act->id);

					if(c->activityId==act->id && c->weightPercentage==100.0 && c->active){
						count++;
						if(c->permanentlyLocked){
							if(idsOfLockedSpace.contains(c->activityId) || !idsOfPermanentlyLockedSpace.contains(c->activityId)){
								QMessageBox::warning(this, tr("FET warning"), tr("Small problem detected")
									+"\n\n"+tr("A possible problem might be that you have 2 or more constraints of type activity preferred room with weight 100% related to activity id %1, please leave only one of them").arg(act->id)
									+"\n\n"+tr("A possible problem might be synchronization - so maybe try to close the timetable view dialog and open it again")
									+"\n\n"+tr("Please report possible bug")
									);
							}
							else{
								if(unlockRadioButton->isChecked() || toggleRadioButton->isChecked()){
									s+=tr("Constraint %1 will not be removed, because it is permanently locked. If you want to unlock it you must go to the constraints menu.").arg("\n"+c->getDetailedDescription(gt.rules)+"\n");
								}
							}
						}
						else{
							if(!idsOfLockedSpace.contains(c->activityId) || idsOfPermanentlyLockedSpace.contains(c->activityId)){
								QMessageBox::warning(this, tr("FET warning"), tr("Small problem detected")
									+"\n\n"+tr("A possible problem might be that you have 2 or more constraints of type activity preferred room with weight 100% related to activity id %1, please leave only one of them").arg(act->id)
									+"\n\n"+tr("A possible problem might be synchronization - so maybe try to close the timetable view dialog and open it again")
									+"\n\n"+tr("Please report possible bug")
									);
							}
							else{
								if(unlockRadioButton->isChecked() || toggleRadioButton->isChecked()){
									tmpsc.append((SpaceConstraint*)c);
								}
							}
						}
					}
				}
				if(count==0 && (lockRadioButton->isChecked() || toggleRadioButton->isChecked())){
					ConstraintActivityPreferredRoom* ctr=new ConstraintActivityPreferredRoom(100, act->id, (gt.rules.internalRoomsList[ri])->name, false);
					bool t=gt.rules.addSpaceConstraint(ctr);
	
					QString s;
					
					if(t){
						addedS++;
						idsOfLockedSpace.insert(act->id);
						s+=tr("Added the following constraint:")+"\n"+ctr->getDetailedDescription(gt.rules);
					}
					else{
						delete ctr;
						
						QMessageBox::warning(this, tr("FET warning"), tr("You may have a problem, because FET expected to add 1 constraint, but this is not possible. "
						 "Please report possible bug"));
					}
				}
				else if(count>=1 && (unlockRadioButton->isChecked() || toggleRadioButton->isChecked())){
					if(count>=2)
						QMessageBox::warning(this, tr("FET warning"), tr("You may have a problem, because FET expected to delete 1 constraint, but will delete %1 constraints").arg(tmpsc.size()));

					foreach(SpaceConstraint* delsc, tmpsc){
						s+=tr("The following constraint will be deleted:")+"\n"+delsc->getDetailedDescription(gt.rules)+"\n";
						gt.rules.removeSpaceConstraint(delsc);
						idsOfLockedSpace.remove(act->id);
						unlockedS++;
						//delete delsc; done by rules.removeSpa...
					}
				}
				tmpsc.clear();
				//gt.rules.internalStructureComputed=false;
			
				if(report){
					int k;
					k=QMessageBox::information(this, tr("FET information"), s,
						tr("Skip information"), tr("See next"), QString(), 1, 0 );
						
					if(k==0)
						report=false;
				}
			}
		}
	}

	QStringList added;
	QStringList removed;
	if(FET_LANGUAGE=="en_US"){
		if(addedT>0){
			if(addedT==1)
				added << QString("Added 1 locking time constraint.");
			else
				added << QString("Added %1 locking time constraints.").arg(addedT);
		}
		if(addedS>0){
			if(addedS==1)
				added << QString("Added 1 locking space constraint.");
			else
				added << QString("Added %1 locking space constraints.").arg(addedS);
		}
		if(unlockedT>0){
			if(unlockedT==1)
				removed << QString("Removed 1 locking time constraint.");
			else
				removed << QString("Removed %1 locking time constraints.").arg(unlockedT);
		}
		if(unlockedS>0){
			if(unlockedS==1)
				removed << QString("Removed 1 locking space constraint.");
			else
				removed << QString("Removed %1 locking space constraints.").arg(unlockedS);
		}
	}
	else{
#if QT_VERSION >= 0x050000
		if(addedT>0){
			added << QCoreApplication::translate("TimetableViewForm", "Added %n locking time constraint(s).",
			 "See http://doc.qt.io/qt-5/i18n-plural-rules.html for advice on how to correctly translate this field."
			 "Also, see http://doc.qt.io/qt-5/i18n-source-translation.html, section 'Handling Plurals'."
			 "You have two examples on how to translate this field in fet_en_GB.ts and in fet_ro.ts"
			 "(open these files with Qt Linguist and see the translation of this field).",
			 addedT);
		}
		if(addedS>0){
			added << QCoreApplication::translate("TimetableViewForm", "Added %n locking space constraint(s).",
			 "See http://doc.qt.io/qt-5/i18n-plural-rules.html for advice on how to correctly translate this field."
			 "Also, see http://doc.qt.io/qt-5/i18n-source-translation.html, section 'Handling Plurals'."
			 "You have two examples on how to translate this field in fet_en_GB.ts and in fet_ro.ts"
			 "(open these files with Qt Linguist and see the translation of this field).",
			 addedS);
		}
		if(unlockedT>0){
			removed << QCoreApplication::translate("TimetableViewForm", "Removed %n locking time constraint(s).",
			 "See http://doc.qt.io/qt-5/i18n-plural-rules.html for advice on how to correctly translate this field."
			 "Also, see http://doc.qt.io/qt-5/i18n-source-translation.html, section 'Handling Plurals'."
			 "You have two examples on how to translate this field in fet_en_GB.ts and in fet_ro.ts"
			 "(open these files with Qt Linguist and see the translation of this field).",
			 unlockedT);
		}
		if(unlockedS>0){
			removed << QCoreApplication::translate("TimetableViewForm", "Removed %n locking space constraint(s).",
			 "See http://doc.qt.io/qt-5/i18n-plural-rules.html for advice on how to correctly translate this field."
			 "Also, see http://doc.qt.io/qt-5/i18n-source-translation.html, section 'Handling Plurals'."
			 "You have two examples on how to translate this field in fet_en_GB.ts and in fet_ro.ts"
			 "(open these files with Qt Linguist and see the translation of this field).",
			 unlockedS);
		}
#else
		if(addedT>0){
			added << QCoreApplication::translate("TimetableViewForm", "Added %n locking time constraint(s).",
			 "See http://doc.qt.io/qt-5/i18n-plural-rules.html for advice on how to correctly translate this field."
			 "Also, see http://doc.qt.io/qt-5/i18n-source-translation.html, section 'Handling Plurals'."
			 "You have two examples on how to translate this field in fet_en_GB.ts and in fet_ro.ts"
			 "(open these files with Qt Linguist and see the translation of this field).", QCoreApplication::CodecForTr,
			 addedT);
		}
		if(addedS>0){
			added << QCoreApplication::translate("TimetableViewForm", "Added %n locking space constraint(s).",
			 "See http://doc.qt.io/qt-5/i18n-plural-rules.html for advice on how to correctly translate this field."
			 "Also, see http://doc.qt.io/qt-5/i18n-source-translation.html, section 'Handling Plurals'."
			 "You have two examples on how to translate this field in fet_en_GB.ts and in fet_ro.ts"
			 "(open these files with Qt Linguist and see the translation of this field).", QCoreApplication::CodecForTr,
			 addedS);
		}
		if(unlockedT>0){
			removed << QCoreApplication::translate("TimetableViewForm", "Removed %n locking time constraint(s).",
			 "See http://doc.qt.io/qt-5/i18n-plural-rules.html for advice on how to correctly translate this field."
			 "Also, see http://doc.qt.io/qt-5/i18n-source-translation.html, section 'Handling Plurals'."
			 "You have two examples on how to translate this field in fet_en_GB.ts and in fet_ro.ts"
			 "(open these files with Qt Linguist and see the translation of this field).", QCoreApplication::CodecForTr,
			 unlockedT);
		}
		if(unlockedS>0){
			removed << QCoreApplication::translate("TimetableViewForm", "Removed %n locking space constraint(s).",
			 "See http://doc.qt.io/qt-5/i18n-plural-rules.html for advice on how to correctly translate this field."
			 "Also, see http://doc.qt.io/qt-5/i18n-source-translation.html, section 'Handling Plurals'."
			 "You have two examples on how to translate this field in fet_en_GB.ts and in fet_ro.ts"
			 "(open these files with Qt Linguist and see the translation of this field).", QCoreApplication::CodecForTr,
			 unlockedS);
		}
#endif
	}
	QString ad=added.join("\n");
	QString re=removed.join("\n");
	QStringList all;
	if(!ad.isEmpty())
		all<<ad;
	if(!re.isEmpty())
		all<<re;
	QString s=all.join("\n\n");
	if(s.isEmpty())
		s=QCoreApplication::translate("TimetableViewForm", "No locking constraints added or removed.");
	QMessageBox::information(this, tr("FET information"), s);

////////// just for testing
	QSet<int> backupLockedTime;
	QSet<int> backupPermanentlyLockedTime;
	QSet<int> backupLockedSpace;
	QSet<int> backupPermanentlyLockedSpace;
	
	backupLockedTime=idsOfLockedTime;
	backupPermanentlyLockedTime=idsOfPermanentlyLockedTime;
	backupLockedSpace=idsOfLockedSpace;
	backupPermanentlyLockedSpace=idsOfPermanentlyLockedSpace;
	
	LockUnlock::computeLockedUnlockedActivitiesTimeSpace(); //not needed, just for testing
	
	assert(backupLockedTime==idsOfLockedTime);
	assert(backupPermanentlyLockedTime==idsOfPermanentlyLockedTime);
	assert(backupLockedSpace==idsOfLockedSpace);
	assert(backupPermanentlyLockedSpace==idsOfPermanentlyLockedSpace);
///////////

	LockUnlock::increaseCommunicationSpinBox();
	
	//cout<<"teachers end, isc="<<gt.rules.internalStructureComputed<<endl;
	//cout<<endl;
}

void TimetableViewTeachersTimeHorizontalForm::widthSpinBoxValueChanged()
{
	if(widthSpinBox->value()==MINIMUM_WIDTH_SPIN_BOX_VALUE)
		teachersTimetableTable->horizontalHeader()->setDefaultSectionSize(2*initialRecommendedHeight);
	else
		teachersTimetableTable->horizontalHeader()->setDefaultSectionSize(widthSpinBox->value());
}

void TimetableViewTeachersTimeHorizontalForm::heightSpinBoxValueChanged()
{
	if(heightSpinBox->value()==MINIMUM_HEIGHT_SPIN_BOX_VALUE)
		teachersTimetableTable->verticalHeader()->setDefaultSectionSize(initialRecommendedHeight);
	else
		teachersTimetableTable->verticalHeader()->setDefaultSectionSize(heightSpinBox->value());
}

void TimetableViewTeachersTimeHorizontalForm::help()
{
	QString s="";
	//s+=QCoreApplication::translate("TimetableViewForm", "You can drag sections to increase/decrease them.");
	//s+="\n\n";
	s+=QCoreApplication::translate("TimetableViewForm", "Lock/unlock: you can select one or more activities in the table and toggle lock/unlock in time, space or both.");
	s+=" ";
	s+=QCoreApplication::translate("TimetableViewForm", "There will be added or removed locking constraints for the selected activities (they can be unlocked only if they are not permanently locked).");
	s+="\n\n";
	s+=QCoreApplication::translate("TimetableViewForm", "Locking time constraints are constraints of type activity preferred starting time. Locking space constraints are constraints of type"
		" activity preferred room. You can see these constraints in the corresponding constraints dialogs. New locking constraints are added at the end of the list of constraints.");
	s+="\n\n";
	s+=QCoreApplication::translate("TimetableViewForm", "If a cell is (permanently) locked in time or space, it contains abbreviations to show that: PLT (permanently locked time), LT (locked time), "
		"PLS (permanently locked space) or LS (locked space).", "Translate the abbreviations also. Make sure the abbreviations in your language are different between themselves "
		"and the user can differentiate easily between them. These abbreviations may appear also in other places, please use the same abbreviations.");
	
	s+="\n\n";
	s+=tr("If a whole column (day+hour) is selected, there will be locked/unlocked also the dummy activities (activities with no teacher) from that column.");
	
	s+="\n\n";
	s+=tr("A bold font cell means that the activity is locked in time, either permanently or not.");
	s+=" ";
	s+=tr("An italic font cell means that the activity is locked in space, either permanently or not.");

	LongTextMessageBox::largeInformation(this, tr("FET help"), s);
}
