// Copyright 2013, University of Freiburg,
// Author: Manuel Schneider <ms1144>

#include "timeoutdialog.h"
#include "ui_timeoutdialog.h"
#include <QProgressBar>
#include <QDebug>
#include <QPushButton>
#include <QKeyEvent>

TimeOutDialog::TimeOutDialog(int time, QWidget *parent)
	: QDialog(parent), _ui(new Ui::TimeOutDialog), _time(time)
{
	_ui->setupUi(this);
    this->installEventFilter(this);
    _ui->buttonBox->installEventFilter(this);
    for (auto b : _ui->buttonBox->buttons()) {
        b->installEventFilter(this);
        b->setFocusPolicy(Qt::NoFocus);
    }
    this->setFocus();
	QObject::connect(&_timer, &QTimer::timeout, this, &TimeOutDialog::update);
	QObject::connect(_ui->buttonBox, &QDialogButtonBox::clicked, [this](QAbstractButton *button) {
		_timer.stop();
		if (button == _ui->buttonBox->button(QDialogButtonBox::Discard)) {
			_time = 0;
		}
    });

	// QProgressDialog takes ownership of QProgressBar
	_ui->progressBar->setMaximum(_time);
	_ui->progressBar->setValue(_time);
	setWindowTitle(" ");
	setWindowFlag(Qt::WindowStaysOnTopHint, true);
	_timer.start(1000);
}

void TimeOutDialog::hideEvent(QHideEvent *e)
{
	QDialog::hideEvent(e);
	_timer.stop();
}

bool TimeOutDialog::eventFilter(QObject *, QEvent *event)
{
    if (event->type() != QEvent::KeyPress)
        return false;
    if (!_timer.isActive())
        return false;
    QKeyEvent *e = static_cast<QKeyEvent *>(event);
    if (e->key() == Qt::Key_Escape) {
        // Handle as discard
        _time = 0;
        _timer.stop();
        return true;
    }
    if (e->key() == Qt::Key_Return || e->key() == Qt::Key_Enter) {
        // Handle as accept
        _timer.stop();
        return true;
    }
    return false;
}

void TimeOutDialog::update()
{
	--_time;
	if (_time == 0) {
		_timer.stop();
	} else {
		_ui->progressBar->setValue(_time);
	}
}