/* This file is part of the KDE project
   Copyright (C) 2005 Cedric Pasteur <cedric.pasteur@free.fr>
   Copyright (C) 2004-2005 Jaroslaw Staniek <js@iidea.pl>

   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this program; see the file COPYING.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
*/

#include "kexidbtimeedit.h"

#include <qtoolbutton.h>
#include <qlayout.h>
#include <qpainter.h>

#include <kpopupmenu.h>
#include <kdatepicker.h>
#include <kdatetbl.h>
#include <kexiutils/utils.h>

KexiDBTimeEdit::KexiDBTimeEdit(const QTime &time, QWidget *parent, const char *name)
 : QTimeEdit(time, parent, name), KexiFormDataItemInterface()
{
	m_invalidState = false;
	setAutoAdvance(true);
	m_cleared = false;

#ifdef QDateTimeEditor_HACK
	m_dte_time = KexiUtils::findFirstChild<QDateTimeEditor>(this, "QDateTimeEditor");
#else
	m_dte_time = 0;
#endif

	connect(this, SIGNAL(valueChanged(const QTime&)), this, SLOT(slotValueChanged(const QTime&)));
}

KexiDBTimeEdit::~KexiDBTimeEdit()
{
}

void KexiDBTimeEdit::setInvalidState( const QString&)
{
	setEnabled(false);
	setReadOnly(true);
	m_invalidState = true;
//! @todo move this to KexiDataItemInterface::setInvalidStateInternal() ?
	if (focusPolicy() & TabFocus)
		setFocusPolicy(QWidget::ClickFocus);
}

void
KexiDBTimeEdit::setEnabled(bool enabled)
{
	 // prevent the user from reenabling the widget when it is in invalid state
	if(enabled && m_invalidState)
		return;
	QTimeEdit::setEnabled(enabled);
}

void KexiDBTimeEdit::setValueInternal(const QVariant &add, bool removeOld)
{
	m_cleared = !m_origValue.isValid();

	int setNumberOnFocus = -1;
	QTime t;
	QString addString(add.toString());
	if (removeOld) {
		if (!addString.isEmpty() && addString[0].latin1()>='0' && addString[0].latin1() <='9') {
			setNumberOnFocus = addString[0].latin1()-'0';
			t = QTime(setNumberOnFocus, 0, 0);
		}
	}
	else
		t = m_origValue.toTime();

	setTime(t);
}

QVariant
KexiDBTimeEdit::value()
{
	//QDateTime - a hack needed because QVariant(QTime) has broken isNull()
	return QVariant(QDateTime( m_cleared ? QDate() : QDate(0,1,2)/*nevermind*/, time()));
}

bool KexiDBTimeEdit::valueIsNull()
{
	return !time().isValid() || time().isNull();
}

bool KexiDBTimeEdit::valueIsEmpty()
{
	return m_cleared;
}

bool KexiDBTimeEdit::isReadOnly() const
{
	//! @todo: data/time edit API has no readonly flag, 
	//!        so use event filter to avoid changes made by keyboard or mouse when m_readOnly==true
	return m_readOnly; //!isEnabled();
}

void KexiDBTimeEdit::setReadOnly(bool set)
{
	m_readOnly = set;
}

QWidget*
KexiDBTimeEdit::widget()
{
	return this;
}

bool KexiDBTimeEdit::cursorAtStart()
{
#ifdef QDateTimeEditor_HACK
	return m_dte_time && hasFocus() && m_dte_time->focusSection()==0;
#else
	return false;
#endif
}

bool KexiDBTimeEdit::cursorAtEnd()
{
#ifdef QDateTimeEditor_HACK
	return m_dte_time && hasFocus()
		&& m_dte_time->focusSection()==int(m_dte_time->sectionCount()-1);
#else
	return false;
#endif
}

void KexiDBTimeEdit::clear()
{
	setTime(QTime());
	m_cleared = true;
}

void
KexiDBTimeEdit::slotValueChanged(const QTime&)
{
	m_cleared = false;
}

#include "kexidbtimeedit.moc"
