/*
 * Stellarium Telescope Control Plug-in
 * 
 * Copyright (C) 2009-2011 Bogdan Marinov (this file)
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA  02110-1335, USA.
*/

#include "Dialog.hpp"
#include "StelApp.hpp"
#include "StelCore.hpp"
#include "StelModuleMgr.hpp"
#include "StelFileMgr.hpp"
#include "StelLocaleMgr.hpp"
#include "StelStyle.hpp"
#include "StelTranslator.hpp"
#include "TelescopeControl.hpp"
#include "TelescopeConfigurationDialog.hpp"
#include "TelescopeDialog.hpp"
#include "ui_telescopeDialog.h"
#include "StelGui.hpp"
#include <QDebug>
#include <QFrame>
#include <QTimer>
#include <QFile>
#include <QFileDialog>
#include <QHash>
#include <QHeaderView>
#include <QSettings>
#include <QStandardItem>

using namespace TelescopeControlGlobals;


TelescopeDialog::TelescopeDialog()
	: telescopeCount(0)
	, configuredSlot(0)
	, configuredTelescopeIsNew(false)
{
	telescopeStatus[0] = StatusNA;
	telescopeType[0] = ConnectionNA;

	ui = new Ui_telescopeDialogForm;

	//TODO: Fix this - it's in the same plugin
	telescopeManager = GETSTELMODULE(TelescopeControl);
	telescopeListModel = new QStandardItemModel(0, ColumnCount);

	//TODO: This shouldn't be a hash...
	statusString[StatusNA] = QString(N_("N/A"));
	statusString[StatusStarting] = QString(N_("Starting"));
	statusString[StatusConnecting] = QString(N_("Connecting"));
	statusString[StatusConnected] = QString(N_("Connected"));
	statusString[StatusDisconnected] = QString(N_("Disconnected"));
	statusString[StatusStopped] = QString(N_("Stopped"));
}

TelescopeDialog::~TelescopeDialog()
{	
	delete ui;
	
	delete telescopeListModel;
}

void TelescopeDialog::retranslate()
{
	if (dialog)
	{
		ui->retranslateUi(dialog);
		setAboutText();
		setHeaderNames();
		updateWarningTexts();
		
		//Retranslate type strings
		for (int i = 0; i < telescopeListModel->rowCount(); i++)
		{
			QStandardItem* item = telescopeListModel->item(i, ColumnType);
			QString original = item->data(Qt::UserRole).toString();
			QModelIndex index = telescopeListModel->index(i, ColumnType);
			telescopeListModel->setData(index, q_(original), Qt::DisplayRole);
		}
	}
}

// Initialize the dialog widgets and connect the signals/slots
void TelescopeDialog::createDialogContent()
{
	ui->setupUi(dialog);
	
	//Inherited connect
	connect(&StelApp::getInstance(), SIGNAL(languageChanged()), this, SLOT(retranslate()));
	connect(ui->closeStelWindow, SIGNAL(clicked()), this, SLOT(close()));
	
	//Connect: sender, signal, receiver, method
	//Page: Telescopes
	connect(ui->pushButtonChangeStatus, SIGNAL(clicked()), this, SLOT(buttonChangeStatusPressed()));
	connect(ui->pushButtonConfigure, SIGNAL(clicked()), this, SLOT(buttonConfigurePressed()));
	connect(ui->pushButtonAdd, SIGNAL(clicked()), this, SLOT(buttonAddPressed()));
	connect(ui->pushButtonRemove, SIGNAL(clicked()), this, SLOT(buttonRemovePressed()));
	
	connect(ui->telescopeTreeView, SIGNAL(clicked (const QModelIndex &)), this, SLOT(selectTelecope(const QModelIndex &)));
	//connect(ui->telescopeTreeView, SIGNAL(activated (const QModelIndex &)), this, SLOT(configureTelescope(const QModelIndex &)));
	
	//Page: Options:
	connect(ui->checkBoxReticles, SIGNAL(clicked(bool)),
	        telescopeManager, SLOT(setFlagTelescopeReticles(bool)));
	connect(ui->checkBoxLabels, SIGNAL(clicked(bool)),
	        telescopeManager, SLOT(setFlagTelescopeLabels(bool)));
	connect(ui->checkBoxCircles, SIGNAL(clicked(bool)),
	        telescopeManager, SLOT(setFlagTelescopeCircles(bool)));
	
	connect(ui->checkBoxEnableLogs, SIGNAL(toggled(bool)), telescopeManager, SLOT(setFlagUseTelescopeServerLogs(bool)));
	
	connect(ui->checkBoxUseExecutables, SIGNAL(toggled(bool)), ui->labelExecutablesDirectory, SLOT(setEnabled(bool)));
	connect(ui->checkBoxUseExecutables, SIGNAL(toggled(bool)), ui->lineEditExecutablesDirectory, SLOT(setEnabled(bool)));
	connect(ui->checkBoxUseExecutables, SIGNAL(toggled(bool)), ui->pushButtonPickExecutablesDirectory, SLOT(setEnabled(bool)));
	connect(ui->checkBoxUseExecutables, SIGNAL(toggled(bool)), this, SLOT(checkBoxUseExecutablesToggled(bool)));
	
	connect(ui->pushButtonPickExecutablesDirectory, SIGNAL(clicked()), this, SLOT(buttonBrowseServerDirectoryPressed()));
	
	//In other dialogs:
	connect(&configurationDialog, SIGNAL(changesDiscarded()), this, SLOT(discardChanges()));
	connect(&configurationDialog, SIGNAL(changesSaved(QString, ConnectionType)), this, SLOT(saveChanges(QString, ConnectionType)));
	
	//Initialize the style
	updateStyle();
	
	//Initializing the list of telescopes
	telescopeListModel->setColumnCount(ColumnCount);
	setHeaderNames();
	
	ui->telescopeTreeView->setModel(telescopeListModel);
	ui->telescopeTreeView->header()->setSectionsMovable(false);
	ui->telescopeTreeView->header()->setSectionResizeMode(ColumnSlot, QHeaderView::ResizeToContents);
	ui->telescopeTreeView->header()->setStretchLastSection(true);
	
	//Populating the list
	//Cycle the slots
	for (int slotNumber = MIN_SLOT_NUMBER; slotNumber < SLOT_NUMBER_LIMIT; slotNumber++)
	{
		//Slot #
		//int slotNumber = (i+1)%SLOT_COUNT;//Making sure slot 0 is last
		
		//Make sure that this is initialized for all slots
		telescopeStatus[slotNumber] = StatusNA;
		
		//Read the telescope properties
		QString name;
		ConnectionType connectionType;
		QString equinox;
		QString host;
		int portTCP;
		int delay;
		bool connectAtStartup;
		QList<double> circles;
		QString serverName;
		QString portSerial;
		if(!telescopeManager->getTelescopeAtSlot(slotNumber, connectionType, name, equinox, host, portTCP, delay, connectAtStartup, circles, serverName, portSerial))
			continue;
		
		//Determine the server type
		telescopeType[slotNumber] = connectionType;
		
		//Determine the telescope's status
		if (telescopeManager->isConnectedClientAtSlot(slotNumber))
		{
			telescopeStatus[slotNumber] = StatusConnected;
		}
		else
		{
			//TODO: Fix this!
			//At startup everything exists and attempts to connect
			telescopeStatus[slotNumber] = StatusConnecting;
		}
		
		addModelRow(slotNumber, connectionType, telescopeStatus[slotNumber], name);
		
		//After everything is done, count this as loaded
		telescopeCount++;
	}
	
	//Finished populating the table, let's sort it by slot number
	//ui->telescopeTreeView->setSortingEnabled(true);//Set in the .ui file
	ui->telescopeTreeView->sortByColumn(ColumnSlot, Qt::AscendingOrder);
	//(Works even when the table is empty)
	//(Makes redundant the delay of 0 above)
	
	//TODO: Reuse code.
	if(telescopeCount > 0)
	{
		ui->telescopeTreeView->setFocus();
		ui->telescopeTreeView->header()->setSectionResizeMode(ColumnType, QHeaderView::ResizeToContents);
	}
	else
	{
		ui->pushButtonChangeStatus->setEnabled(false);
		ui->pushButtonConfigure->setEnabled(false);
		ui->pushButtonRemove->setEnabled(false);
		ui->pushButtonAdd->setFocus();
	}
	updateWarningTexts();
	
	if(telescopeCount >= SLOT_COUNT)
		ui->pushButtonAdd->setEnabled(false);
	
	//Checkboxes
	ui->checkBoxReticles->setChecked(telescopeManager->getFlagTelescopeReticles());
	ui->checkBoxLabels->setChecked(telescopeManager->getFlagTelescopeLabels());
	ui->checkBoxCircles->setChecked(telescopeManager->getFlagTelescopeCircles());
	ui->checkBoxEnableLogs->setChecked(telescopeManager->getFlagUseTelescopeServerLogs());
	
	//Telescope server directory
	ui->checkBoxUseExecutables->setChecked(telescopeManager->getFlagUseServerExecutables());
	ui->lineEditExecutablesDirectory->setText(telescopeManager->getServerExecutablesDirectoryPath());
	
	//About page
	setAboutText();
	
	//Everything must be initialized by now, start the updateTimer
	//TODO: Find if it's possible to run it only when the dialog is visible
	QTimer* updateTimer = new QTimer(this);
	connect(updateTimer, SIGNAL(timeout()), this, SLOT(updateTelescopeStates()));
	updateTimer->start(200);
}

void TelescopeDialog::setAboutText()
{
	//TODO: Expand
	QString aboutPage = "<html><head></head><body>";
	aboutPage += QString("<h2>%1</h2>").arg(q_("Telescope Control plug-in"));
	aboutPage += "<h3>" + QString(q_("Version %1")).arg(TELESCOPE_CONTROL_VERSION) + "</h3>";
	QFile aboutFile(":/telescopeControl/about.utf8");
	if(aboutFile.open(QFile::ReadOnly | QFile::Text))
	{
		aboutPage += aboutFile.readAll();
		aboutFile.close();
	}
	aboutPage += "</body></html>";
	
	QString helpPage = "<html><head></head><body>";
	QFile helpFile(":/telescopeControl/help.utf8");
	if(helpFile.open(QFile::ReadOnly | QFile::Text))
	{
		helpPage += helpFile.readAll();
		helpFile.close();
	}
	helpPage += "</body></html>";
	
	StelGui* gui = dynamic_cast<StelGui*>(StelApp::getInstance().getGui());
	Q_ASSERT(gui);
	ui->textBrowserAbout->document()->setDefaultStyleSheet(QString(gui->getStelStyle().htmlStyleSheet));
	ui->textBrowserHelp->document()->setDefaultStyleSheet(QString(gui->getStelStyle().htmlStyleSheet));
	ui->textBrowserAbout->setHtml(aboutPage);
	ui->textBrowserHelp->setHtml(helpPage);
}

void TelescopeDialog::setHeaderNames()
{
	QStringList headerStrings;
	// TRANSLATORS: Symbol for "number"
	headerStrings << q_("#");
	//headerStrings << "Start";
	headerStrings << q_("Status");
	headerStrings << q_("Type");
	headerStrings << q_("Name");
	telescopeListModel->setHorizontalHeaderLabels(headerStrings);
}

void TelescopeDialog::updateWarningTexts()
{
	QString text;
	if (telescopeCount > 0)
	{
#ifdef Q_OS_MAC
		QString modifierName = "Command";
#else
		QString modifierName = "Ctrl";
#endif
		
		text = QString(q_("To slew a connected telescope to an object (for example, a star), select that object, then hold down the %1 key and press the key with that telescope's number. To slew it to the center of the current view, hold down the Alt key and press the key with that telescope's number.")).arg(modifierName);
	}
	else
	{
		if (telescopeManager->getDeviceModels().isEmpty())
		{
			// TRANSLATORS: Currently, it is very unlikely if not impossible to actually see this text. :)
			text = q_("No device model descriptions are available. Stellarium will not be able to control a telescope on its own, but it is still possible to do it through an external application or to connect to a remote host.");
		}
		else
		{
			// TRANSLATORS: The translated name of the Add button is automatically inserted.
			text = QString(q_("Press the \"%1\" button to set up a new telescope connection.")).arg(ui->pushButtonAdd->text());
		}
	}
	
	ui->labelWarning->setText(text);
}

QString TelescopeDialog::getTypeLabel(ConnectionType type)
{
	QString typeLabel;
	switch (type)
	{
		case ConnectionInternal:
			// TRANSLATORS: Telescope connection type
			typeLabel = N_("local, Stellarium");
			break;
		case ConnectionLocal:
			// TRANSLATORS: Telescope connection type
			typeLabel = N_("local, external");
			break;
		case ConnectionRemote:
			// TRANSLATORS: Telescope connection type
			typeLabel = N_("remote, unknown");
			break;
		case ConnectionVirtual:
			// TRANSLATORS: Telescope connection type
			typeLabel = N_("virtual");
			break;
		default:
			;
	}
	return typeLabel;
}

void TelescopeDialog::addModelRow(int number,
                                  ConnectionType type,
                                  TelescopeStatus status,
                                  const QString& name)
{
	Q_ASSERT(telescopeListModel);
	
	QStandardItem* tempItem = 0;
	int lastRow = telescopeListModel->rowCount();
	// Number
	tempItem = new QStandardItem(QString::number(number));
	tempItem->setEditable(false);
	telescopeListModel->setItem(lastRow, ColumnSlot, tempItem);
	
	// Checkbox
	//TODO: This is not updated, because it was commented out
	//tempItem = new QStandardItem;
	//tempItem->setEditable(false);
	//tempItem->setCheckable(true);
	//tempItem->setCheckState(Qt::Checked);
	//tempItem->setData("If checked, this telescope will start when Stellarium is started", Qt::ToolTipRole);
	//telescopeListModel->setItem(lastRow, ColumnStartup, tempItem);//Start-up checkbox
	
	//Status
	tempItem = new QStandardItem(q_(statusString[status]));
	tempItem->setEditable(false);
	telescopeListModel->setItem(lastRow, ColumnStatus, tempItem);
	
	//Type
	QString typeLabel = getTypeLabel(type);
	tempItem = new QStandardItem(q_(typeLabel));
	tempItem->setEditable(false);
	tempItem->setData(typeLabel, Qt::UserRole);
	telescopeListModel->setItem(lastRow, ColumnType, tempItem);
	
	//Name
	tempItem = new QStandardItem(name);
	tempItem->setEditable(false);
	telescopeListModel->setItem(lastRow, ColumnName, tempItem);
}

void TelescopeDialog::updateModelRow(int rowNumber,
                                     ConnectionType type,
                                     TelescopeStatus status,
                                     const QString& name)
{
	Q_ASSERT(telescopeListModel);
	if (rowNumber > telescopeListModel->rowCount())
		return;
	
	//The slot number doesn't need to be updated. :)
	//Status
	QString statusLabel = q_(statusString[status]);
	QModelIndex index = telescopeListModel->index(rowNumber, ColumnStatus);
	telescopeListModel->setData(index, statusLabel, Qt::DisplayRole);
	
	//Type
	QString typeLabel = getTypeLabel(type);
	index = telescopeListModel->index(rowNumber, ColumnType);
	telescopeListModel->setData(index, typeLabel, Qt::UserRole);
	telescopeListModel->setData(index, q_(typeLabel), Qt::DisplayRole);
	
	//Name
	index = telescopeListModel->index(rowNumber, ColumnName);
	telescopeListModel->setData(index, name, Qt::DisplayRole);
}


void TelescopeDialog::selectTelecope(const QModelIndex & index)
{
	//Extract selected item index
	int selectedSlot = telescopeListModel->data( telescopeListModel->index(index.row(),0) ).toInt();
	updateStatusButtonForSlot(selectedSlot);

	//In all cases
	ui->pushButtonRemove->setEnabled(true);
}

void TelescopeDialog::configureTelescope(const QModelIndex & currentIndex)
{
	configuredTelescopeIsNew = false;
	configuredSlot = telescopeListModel->data( telescopeListModel->index(currentIndex.row(), ColumnSlot) ).toInt();
	
	//Stop the telescope first if necessary
	if(telescopeType[configuredSlot] != ConnectionInternal && telescopeStatus[configuredSlot] != StatusDisconnected)
	{
		if(telescopeManager->stopTelescopeAtSlot(configuredSlot)) //Act as "Disconnect"
				telescopeStatus[configuredSlot] = StatusDisconnected;
		else
			return;
	}
	else if(telescopeStatus[configuredSlot] != StatusStopped)
	{
		if(telescopeManager->stopTelescopeAtSlot(configuredSlot)) //Act as "Stop"
					telescopeStatus[configuredSlot] = StatusStopped;
	}
	//Update the status in the list
	int curRow = ui->telescopeTreeView->currentIndex().row();
	QModelIndex curIndex = telescopeListModel->index(curRow, ColumnStatus);
	QString string = q_(statusString[telescopeStatus[configuredSlot]]);
	telescopeListModel->setData(curIndex, string, Qt::DisplayRole);
	
	setVisible(false);
	configurationDialog.setVisible(true); //This should be called first to actually create the dialog content
	
	configurationDialog.initExistingTelescopeConfiguration(configuredSlot);
}

void TelescopeDialog::buttonChangeStatusPressed()
{
	if(!ui->telescopeTreeView->currentIndex().isValid())
		return;
	
	//Extract selected slot
	int selectedSlot = telescopeListModel->data( telescopeListModel->index(ui->telescopeTreeView->currentIndex().row(), ColumnSlot) ).toInt();
	
	//TODO: As most of these are asynchronous actions, it looks like that there should be a queue...
	
	if(telescopeType[selectedSlot] != ConnectionInternal) 
	{
		//Can't be launched by Stellarium -> can't be stopped by Stellarium
		//Can be only connected/disconnected
		if(telescopeStatus[selectedSlot] == StatusDisconnected)
		{
			if(telescopeManager->startTelescopeAtSlot(selectedSlot)) //Act as "Connect"
				telescopeStatus[selectedSlot] = StatusConnecting;
		}
		else
		{
			if(telescopeManager->stopTelescopeAtSlot(selectedSlot)) //Act as "Disconnect"
				telescopeStatus[selectedSlot] = StatusDisconnected;
		}
	}
	else
	{
		switch(telescopeStatus[selectedSlot]) //Why the switch?
		{
			case StatusNA:
			case StatusStopped:
			{
				if(telescopeManager->startTelescopeAtSlot(selectedSlot)) //Act as "Start"
					telescopeStatus[selectedSlot] = StatusConnecting;
			}
			break;
			case StatusConnecting:
			case StatusConnected:
			{
				if(telescopeManager->stopTelescopeAtSlot(selectedSlot)) //Act as "Stop"
					telescopeStatus[selectedSlot] = StatusStopped;
			}
			break;
			default:
				break;
		}
	}
	
	//Update the status in the list
	int curRow = ui->telescopeTreeView->currentIndex().row();
	QModelIndex curIndex = telescopeListModel->index(curRow, ColumnStatus);
	QString string = q_(statusString[telescopeStatus[selectedSlot]]);
	telescopeListModel->setData(curIndex, string, Qt::DisplayRole);
}

void TelescopeDialog::buttonConfigurePressed()
{
	if(ui->telescopeTreeView->currentIndex().isValid())
		configureTelescope(ui->telescopeTreeView->currentIndex());
}

void TelescopeDialog::buttonAddPressed()
{
	if(telescopeCount >= SLOT_COUNT)
		return;
	
	configuredTelescopeIsNew = true;
	
	//Find the first unoccupied slot (there is at least one)
	for (configuredSlot = MIN_SLOT_NUMBER; configuredSlot < SLOT_NUMBER_LIMIT; configuredSlot++)
	{
		//configuredSlot = (i+1)%SLOT_COUNT;
		if(telescopeStatus[configuredSlot] == StatusNA)
			break;
	}
	
	setVisible(false);
	configurationDialog.setVisible(true); //This should be called first to actually create the dialog content
	configurationDialog.initNewTelescopeConfiguration(configuredSlot);
}

void TelescopeDialog::buttonRemovePressed()
{
	if(!ui->telescopeTreeView->currentIndex().isValid())
		return;
	
	//Extract selected slot
	int selectedSlot = telescopeListModel->data( telescopeListModel->index(ui->telescopeTreeView->currentIndex().row(),0) ).toInt();
	
	//Stop the telescope if necessary and remove it
	if(telescopeManager->stopTelescopeAtSlot(selectedSlot))
	{
		//TODO: Update status?
		if(!telescopeManager->removeTelescopeAtSlot(selectedSlot))
		{
			//TODO: Add debug
			return;
		}
	}
	else
	{
		//TODO: Add debug
		return;
	}
	
	//Save the changes to file
	telescopeManager->saveTelescopes();
	
	telescopeStatus[selectedSlot] = StatusNA;
	telescopeCount -= 1;
	
//Update the interface to reflect the changes:
	
	//Make sure that the header section keeps it size
	if(telescopeCount == 0)
		ui->telescopeTreeView->header()->setSectionResizeMode(ColumnType, QHeaderView::Interactive);
	
	//Remove the telescope from the table/tree
	telescopeListModel->removeRow(ui->telescopeTreeView->currentIndex().row());
	
	//If there are less than the maximal number of telescopes now, new ones can be added
	if(telescopeCount < SLOT_COUNT)
		ui->pushButtonAdd->setEnabled(true);
	
	//If there are no telescopes left, disable some buttons
	if(telescopeCount == 0)
	{
		//TODO: Fix the phantom text of the Status button (reuse code?)
		//IDEA: Vsible/invisible instead of enabled/disabled?
		//The other buttons expand to take the place (delete spacers)
		ui->pushButtonChangeStatus->setEnabled(false);
		ui->pushButtonConfigure->setEnabled(false);
		ui->pushButtonRemove->setEnabled(false);
	}
	else
	{
		ui->telescopeTreeView->setCurrentIndex(telescopeListModel->index(0,0));
	}
	updateWarningTexts();
}

void TelescopeDialog::saveChanges(QString name, ConnectionType type)
{
	//Save the changes to file
	telescopeManager->saveTelescopes();
	
	//Type and server properties
	telescopeType[configuredSlot] = type;
	switch (type)
	{
		case ConnectionVirtual:
			telescopeStatus[configuredSlot] = StatusStopped;
			break;

		case ConnectionInternal:
			if(configuredTelescopeIsNew)
				telescopeStatus[configuredSlot] = StatusStopped;//TODO: Is there a point? Isn't it better to force the status update method?
			break;

		case ConnectionLocal:
			telescopeStatus[configuredSlot] = StatusDisconnected;
			break;

		case ConnectionRemote:
		default:
			telescopeStatus[configuredSlot] = StatusDisconnected;
	}
	
	//Update the model/list
	TelescopeStatus status = telescopeStatus[configuredSlot];
	if(configuredTelescopeIsNew)
	{
		addModelRow(configuredSlot, type, status, name);
		telescopeCount++;
	}
	else
	{
		int currentRow = ui->telescopeTreeView->currentIndex().row();
		updateModelRow(currentRow, type, status, name);
	}
	//Sort the updated table by slot number
	ui->telescopeTreeView->sortByColumn(ColumnSlot, Qt::AscendingOrder);
	
	//Can't add more telescopes if they have reached the maximum number
	if (telescopeCount >= SLOT_COUNT)
		ui->pushButtonAdd->setEnabled(false);
	
	//
	if (telescopeCount == 0)
	{
		ui->pushButtonChangeStatus->setEnabled(false);
		ui->pushButtonConfigure->setEnabled(false);
		ui->pushButtonRemove->setEnabled(false);
		ui->telescopeTreeView->header()->setSectionResizeMode(ColumnType, QHeaderView::Interactive);
	}
	else
	{
		ui->telescopeTreeView->setFocus();
		ui->telescopeTreeView->setCurrentIndex(telescopeListModel->index(0,0));
		ui->pushButtonConfigure->setEnabled(true);
		ui->pushButtonRemove->setEnabled(true);
		ui->telescopeTreeView->header()->setSectionResizeMode(ColumnType, QHeaderView::ResizeToContents);
	}
	updateWarningTexts();
	
	configuredTelescopeIsNew = false;
	configurationDialog.setVisible(false);
	setVisible(true);//Brings the current window to the foreground
}

void TelescopeDialog::discardChanges()
{
	configurationDialog.setVisible(false);
	setVisible(true);//Brings the current window to the foreground
	
	if (telescopeCount >= SLOT_COUNT)
		ui->pushButtonAdd->setEnabled(false);
	if (telescopeCount == 0)
		ui->pushButtonRemove->setEnabled(false);
	
	configuredTelescopeIsNew = false;
}

void TelescopeDialog::updateTelescopeStates()
{
	if(telescopeCount == 0)
		return;
	
	int slotNumber = -1;
	for (int i=0; i<(telescopeListModel->rowCount()); i++)
	{
		slotNumber = telescopeListModel->data( telescopeListModel->index(i, ColumnSlot) ).toInt();
		//TODO: Check if these cover all possibilites
		if (telescopeManager->isConnectedClientAtSlot(slotNumber))
		{
			telescopeStatus[slotNumber] = StatusConnected;
		}
		else if(telescopeManager->isExistingClientAtSlot(slotNumber))
		{
			telescopeStatus[slotNumber] = StatusConnecting;
		}
		else
		{
			if(telescopeType[slotNumber] == ConnectionInternal)
				telescopeStatus[slotNumber] = StatusStopped;
			else
				telescopeStatus[slotNumber] = StatusDisconnected;
		}
		
		//Update the status in the list
		QModelIndex index = telescopeListModel->index(i, ColumnStatus);
		QString statusStr = q_(statusString[telescopeStatus[slotNumber]]);
		telescopeListModel->setData(index, statusStr, Qt::DisplayRole);
	}
	
	if(ui->telescopeTreeView->currentIndex().isValid())
	{
		int selectedSlot = telescopeListModel->data( telescopeListModel->index(ui->telescopeTreeView->currentIndex().row(), ColumnSlot) ).toInt();
		//Update the ChangeStatus button
		updateStatusButtonForSlot(selectedSlot);
	}
}

void TelescopeDialog::updateStatusButtonForSlot(int selectedSlot)
{
	if(telescopeType[selectedSlot] != ConnectionInternal)
	{
		//Can't be launched by Stellarium => can't be stopped by Stellarium
		//Can be only connected/disconnected
		if(telescopeStatus[selectedSlot] == StatusDisconnected)
		{
			setStatusButtonToConnect();
			ui->pushButtonChangeStatus->setEnabled(true);
		}
		else
		{
			setStatusButtonToDisconnect();
			ui->pushButtonChangeStatus->setEnabled(true);
		}
	}
	else
	{
		switch(telescopeStatus[selectedSlot])
		{
			case StatusNA:
			case StatusStopped:
				setStatusButtonToStart();
				ui->pushButtonChangeStatus->setEnabled(true);
				break;
			case StatusConnected:
			case StatusConnecting:
				setStatusButtonToStop();
				ui->pushButtonChangeStatus->setEnabled(true);
				break;
			default:
				setStatusButtonToStart();
				ui->pushButtonChangeStatus->setEnabled(false);
				ui->pushButtonConfigure->setEnabled(false);
				ui->pushButtonRemove->setEnabled(false);
				break;
		}
	}
}

void TelescopeDialog::setStatusButtonToStart()
{
        ui->pushButtonChangeStatus->setText(q_("Start"));
        ui->pushButtonChangeStatus->setToolTip(q_("Start the selected local telescope"));
}

void TelescopeDialog::setStatusButtonToStop()
{
        ui->pushButtonChangeStatus->setText(q_("Stop"));
        ui->pushButtonChangeStatus->setToolTip(q_("Stop the selected local telescope"));
}

void TelescopeDialog::setStatusButtonToConnect()
{
        ui->pushButtonChangeStatus->setText(q_("Connect"));
        ui->pushButtonChangeStatus->setToolTip(q_("Connect to the selected telescope"));
}

void TelescopeDialog::setStatusButtonToDisconnect()
{
        ui->pushButtonChangeStatus->setText(q_("Disconnect"));
        ui->pushButtonChangeStatus->setToolTip(q_("Disconnect from the selected telescope"));
}

void TelescopeDialog::updateStyle()
{
	if (dialog)
	{
		StelGui* gui = dynamic_cast<StelGui*>(StelApp::getInstance().getGui());
		Q_ASSERT(gui);
		QString style(gui->getStelStyle().htmlStyleSheet);
		ui->textBrowserAbout->document()->setDefaultStyleSheet(style);
	}
}

void TelescopeDialog::checkBoxUseExecutablesToggled(bool useExecutables)
{
	telescopeManager->setFlagUseServerExecutables(useExecutables);
}

void TelescopeDialog::buttonBrowseServerDirectoryPressed()
{
        QString newPath = QFileDialog::getExistingDirectory (0, QString(q_("Select a directory")), telescopeManager->getServerExecutablesDirectoryPath());
	//TODO: Validation? Directory exists and contains servers?
	if(!newPath.isEmpty())
	{
		ui->lineEditExecutablesDirectory->setText(newPath);
		telescopeManager->setServerExecutablesDirectoryPath(newPath);
		telescopeManager->setFlagUseServerExecutables(true);
	}
}