kexidbcheckbox.cpp

/* This file is part of the KDE project
   Copyright (C) 2005 Cedric Pasteur <cedric.pasteur@free.fr>
   Copyright (C) 2004-2006 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 "kexidbcheckbox.h"
 
#include <kexiutils/utils.h>
#include <kexidb/queryschema.h>
 
KexiDBCheckBox::KexiDBCheckBox(const TQString &text, TQWidget *parent, const char *name)
 : TQCheckBox(text, parent, name), KexiFormDataItemInterface()
 , m_invalidState(false)
 , m_tristateChanged(false)
 , m_tristate(TristateDefault)
{
    setFocusPolicy(TQWidget::StrongFocus);
    updateTristate();
    connect(this, TQ_SIGNAL(stateChanged(int)), this, TQ_SLOT(slotStateChanged(int)));
}
 
KexiDBCheckBox::~KexiDBCheckBox()
{
}
 
void KexiDBCheckBox::setInvalidState( const TQString& displayText )
{
    setEnabled(false);
    setState(NoChange);
    m_invalidState = true;
    if (focusPolicy() & TQWidget::TabFocus)
        setFocusPolicy(TQWidget::ClickFocus);
    setText(displayText);
}
 
void
KexiDBCheckBox::setEnabled(bool enabled)
{
    if(enabled && m_invalidState)
        return;
    TQCheckBox::setEnabled(enabled);
}
 
void
KexiDBCheckBox::setReadOnly(bool readOnly)
{
    setEnabled(!readOnly);
}
 
void KexiDBCheckBox::setValueInternal(const TQVariant &add, bool removeOld)
{
    Q_UNUSED(add);
    Q_UNUSED(removeOld);
    if (isTristateInternal())
        setState( m_origValue.isNull() ? NoChange : (m_origValue.toBool() ? On : Off) );
    else
        setState( m_origValue.toBool() ? On : Off );
}
 
TQVariant
KexiDBCheckBox::value()
{
    if (state()==NoChange)
        return TQVariant();
    return TQVariant(state()==On);
}
 
void KexiDBCheckBox::slotStateChanged(int )
{
    signalValueChanged();
}
 
bool KexiDBCheckBox::valueIsNull()
{
    return state() == NoChange;
}
 
bool KexiDBCheckBox::valueIsEmpty()
{
    return false;
}
 
bool KexiDBCheckBox::isReadOnly() const
{
    return !isEnabled();
}
 
TQWidget*
KexiDBCheckBox::widget()
{
    return this;
}
 
bool KexiDBCheckBox::cursorAtStart()
{
    return false; 
}
 
bool KexiDBCheckBox::cursorAtEnd()
{
    return false; 
}
 
void KexiDBCheckBox::clear()
{
    setState(NoChange);
}
 
void KexiDBCheckBox::setTristate(KexiDBCheckBox::Tristate tristate)
{
    m_tristateChanged = true;
    m_tristate = tristate;
    updateTristate();
}
 
KexiDBCheckBox::Tristate KexiDBCheckBox::isTristate() const
{
    return m_tristate;
}
 
bool KexiDBCheckBox::isTristateInternal() const
{
    if (m_tristate == TristateDefault)
        return !dataSource().isEmpty();
 
    return m_tristate == TristateOn;
}
 
void KexiDBCheckBox::updateTristate()
{
    if (m_tristate == TristateDefault) {
        TQCheckBox::setTristate( !dataSource().isEmpty() );
    }
    else {
        TQCheckBox::setTristate( m_tristate == TristateOn );
    }
}
 
void KexiDBCheckBox::setDataSource(const TQString &ds)
{
    KexiFormDataItemInterface::setDataSource(ds);
    updateTristate();
}
 
void KexiDBCheckBox::setDisplayDefaultValue(TQWidget *widget, bool displayDefaultValue)
{
    KexiFormDataItemInterface::setDisplayDefaultValue(widget, displayDefaultValue);
    // initialize display parameters for default / entered value
    KexiDisplayUtils::DisplayParameters * const params 
        = displayDefaultValue ? m_displayParametersForDefaultValue : m_displayParametersForEnteredValue;
//  setFont(params->font);
    TQPalette pal(palette());
//  pal.setColor(TQPalette::Active, TQColorGroup::Text, params->textColor);
    pal.setColor(TQPalette::Active, TQColorGroup::Foreground, params->textColor);
    setPalette(pal);
}
 
#include "kexidbcheckbox.moc"