#include "historywindow.h"

 #include "mainwindow.h"

 extern QString iconPath;

 extern Settings settings;

 extern Main *mainWindow;

 HistoryWindow::HistoryWindow (QWidget *parent):QDialog (parent)

 {

 	ui.setupUi (this);

 	ui.historyTable->setRowCount (20);

 	ui.historyTable->setColumnCount (3);

 	QTableWidgetItem *item;

 	item= new QTableWidgetItem(tr("Action","Table with actions"));

 	ui.historyTable->setHorizontalHeaderItem(0, item);

 	item= new QTableWidgetItem(tr("Comment","Table with actions"));

 	ui.historyTable->setHorizontalHeaderItem(1, item);

 	item= new QTableWidgetItem(tr("Undo action","Table with actions"));

 	ui.historyTable->setHorizontalHeaderItem(2, item);

 	ui.historyTable->setSelectionBehavior (QAbstractItemView::SelectRows);

 	ui.undoButton->setIcon (QIcon(iconPath+"/undo.png"));

 	ui.redoButton->setIcon (QIcon(iconPath+"/redo.png"));

 	connect ( ui.undoButton, SIGNAL (clicked()), this, SLOT (undo()));

 	connect ( ui.redoButton, SIGNAL (clicked()), this, SLOT (redo()));

 	connect ( ui.historyTable, SIGNAL (itemSelectionChanged()), this, SLOT (select()));

 	// Load Settings

 	resize (settings.value ( "/historywindow/geometry/size", QSize(450,600)).toSize());

 	move   (settings.value ( "/historywindow/geometry/pos", QPoint (250,50)).toPoint());

 	for (int i=0; i<3; ++i)

 		ui.historyTable->setColumnWidth (i,settings.value( QString("/historywindow/geometry/columnWidth/%1").arg(i),150).toInt());

 	if (settings.value ( "/historywindow/showWithMain",false).toBool())

 		setShowWithMain(true);

 	else	

 		setShowWithMain(false);

 }

 HistoryWindow::~HistoryWindow()

 {

 	settings.setValue( "/historywindow/geometry/size", size() );

 	settings.setValue( "/historywindow/geometry/pos", pos() );

 	settings.setValue( "/historywindow/showWithMain",showWithMain());

 	for (int i=0; i<3; ++i)

 		settings.setValue( QString("/historywindow/geometry/columnWidth/%1").arg(i), ui.historyTable->columnWidth (i) );

 }

 void HistoryWindow::clearRow(int row)

 {

 	QTableWidgetItem *it;

 	it=ui.historyTable->item (row,0);

 	if (it) it->setText ("");

 	it=ui.historyTable->item (row,1);

 	if (it) it->setText ("");

 	it=ui.historyTable->item (row,2);

 	if (it) it->setText ("");

 }

 void HistoryWindow::updateRow(int row, int step, SimpleSettings &set)

 {

 	QTableWidgetItem *item;

 	item= new QTableWidgetItem(set.readEntry(QString("/history/step-%1/redoCommand").arg(step)));

 	ui.historyTable->setItem(row, 0, item);

 	item= new QTableWidgetItem(set.readEntry(QString("/history/step-%1/comment").arg(step)));

 	ui.historyTable->setItem(row, 1, item);

 	item=new QTableWidgetItem(set.readEntry(QString("/history/step-%1/undoCommand").arg(step)));

 	ui.historyTable->setItem(row, 2, item);

 }

 void HistoryWindow::update(SimpleSettings &set)

 {

 	int undosAvail=set.readNumEntry("/history/undosAvail",0);

 	int redosAvail=set.readNumEntry("/history/redosAvail",0);

 	int stepsTotal=set.readNumEntry("/history/stepsTotal",0);

 	int curStep=set.readNumEntry ("/history/curStep");

 	int i;

 	int s=curStep;

 	int r=undosAvail-1;

 	QTableWidgetItem *item;

 	// Update buttons

 	if (undosAvail<1)

 		ui.undoButton->setEnabled (false);

 	else	

 		ui.undoButton->setEnabled (true);

 	if (redosAvail<1)

 		ui.redoButton->setEnabled (false);

 	else	

 		ui.redoButton->setEnabled (true);

 	// Update undos in table

 	for (i=undosAvail; i>0; i--)

 	{

 		updateRow (r,s,set);

 		r--;

 		s--;

 		if (s<1) s=stepsTotal;

 	}

 	// Generated the "now" row

 	QColor c(255,200,120);

 	for (i=0;i<=2;i++)

 	{

 		if (i!=1)

 		{

 			item=new QTableWidgetItem("");

 			item->setBackgroundColor (c);

 			ui.historyTable->setItem(undosAvail, i, item);

 		}

 	}

 	item=new QTableWidgetItem(" - " +tr("Current state","Current bar in history hwindow")+ " - ");

 	item->setBackgroundColor (c);

 	ui.historyTable->setItem(undosAvail, 1, item);

 	// Show "now" row

 	ui.historyTable->scrollToItem (item);

 	// Update Redos in table

 	s=curStep;

 	s++; if (s>stepsTotal) s=1;

 	for (i=1;i<= redosAvail; i++)

 	{

 		updateRow (undosAvail+i,s,set);

 		s++; if (s>stepsTotal) s=1;

 	}

 	// Delete the rest

 	for (i=undosAvail+redosAvail+1;i<= stepsTotal; i++)

 		clearRow (i);

 	ui.historyTable->resizeColumnsToContents();

 }

 void HistoryWindow::setStepsTotal (int st)

 {

 	// Number of steps + "current" bar

 	ui.historyTable->setRowCount (st+1);

 }

 void HistoryWindow::setShowWithMain (bool v)

 {

 	showwithmain=v;

 }

 void HistoryWindow::closeEvent( QCloseEvent* ce )

 {

     ce->accept();	// TextEditor can be reopened with show()

     showwithmain=false;

 	emit (windowClosed() );

     return;

 }

 bool HistoryWindow::showWithMain()

 {

 	return showwithmain;

 }

 void HistoryWindow::undo()

 {

 	mainWindow->editUndo();

 }

 void HistoryWindow::redo()

 {

 	mainWindow->editRedo();

 }

 void HistoryWindow::select()

 {

 	mainWindow->gotoHistoryStep (ui.historyTable->row (ui.historyTable->selectedItems().first()));

 }