kexidblineedit.cpp

/* This file is part of the KDE project
   Copyright (C) 2005 Cedric Pasteur <cedric.pasteur@free.fr>
   Copyright (C) 2004-2007 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 "kexidblineedit.h"
#include "kexidbautofield.h"
 
#include <kdebug.h>
#include <knumvalidator.h>
#include <kdatetbl.h>
 
#include <tqpopupmenu.h>
#include <tqpainter.h>
 
#include <kexiutils/utils.h>
#include <kexidb/queryschema.h>
#include <kexidb/fieldvalidator.h>
#include <kexiutils/utils.h>

//#define USE_KLineEdit_setReadOnly

class KexiDBLineEdit_ReadOnlyValidator : public TQValidator
{
    public:
        KexiDBLineEdit_ReadOnlyValidator( TQObject * parent ) 
         : TQValidator(parent)
        {
        }
        ~KexiDBLineEdit_ReadOnlyValidator() {}
        virtual State validate( TQString &, int & ) const { return Invalid; }
};
 
//-----
 
KexiDBLineEdit::KexiDBLineEdit(TQWidget *parent, const char *name)
 : KLineEdit(parent, name)
 , KexiDBTextWidgetInterface()
 , KexiFormDataItemInterface()
//moved , m_dateFormatter(0)
//moved , m_timeFormatter(0)
 , m_menuExtender(this, this)
 , m_internalReadOnly(false)
 , m_slotTextChanged_enabled(true)
{
#ifdef USE_KLineEdit_setReadOnly
    TQPalette p(widget->palette());
    p.setColor( lighterGrayBackgroundColor(palette()) );
    widget->setPalette(p);
#endif
 
    connect(this, TQ_SIGNAL(textChanged(const TQString&)), this, TQ_SLOT(slotTextChanged(const TQString&)));
}
 
KexiDBLineEdit::~KexiDBLineEdit()
{
//moved delete m_dateFormatter;
//moved delete m_timeFormatter;
}
 
void KexiDBLineEdit::setInvalidState( const TQString& displayText )
{
    KLineEdit::setReadOnly(true);
    if (focusPolicy() & TQWidget::TabFocus)
        setFocusPolicy(TQWidget::ClickFocus);
    setText(displayText);
}
 
void KexiDBLineEdit::setValueInternal(const TQVariant& add, bool removeOld)
{
#if 0 //moved to KexiTextFormatter
    TQVariant value;
    if (removeOld)
        value = add;
    else {
        if (add.toString().isEmpty())
            value = m_origValue;
        else
            value = m_origValue.toString() + add.toString();
    }
 
    if (m_columnInfo) {
        const KexiDB::Field::Type t = m_columnInfo->field->type();
        if (t == KexiDB::Field::Boolean) {
            setText( value.toBool() ? "1" : "0" );
            return;
        }
        else if (t == KexiDB::Field::Date) {
            setText( dateFormatter()->dateToString( value.toString().isEmpty() ? TQDate() : value.toDate() ) );
            setCursorPosition(0); //ok?
            return;
        }
        else if (t == KexiDB::Field::Time) {
            setText( 
                timeFormatter()->timeToString( 
                    //hack to avoid converting null variant to valid TQTime(0,0,0)
                    value.toString().isEmpty() ? value.toTime() : TQTime(99,0,0) 
                )
            );
            setCursorPosition(0); //ok?
            return;
        }
        else if (t == KexiDB::Field::DateTime) {
            if (value.toString().isEmpty() ) {
                setText( TQString() );
            }
            else {
                setText(
                    dateFormatter()->dateToString( value.toDateTime().date() ) + " " +
                    timeFormatter()->timeToString( value.toDateTime().time() )
                );
            }
            setCursorPosition(0); //ok?
            return;
        }
    }
#endif  
    m_slotTextChanged_enabled = false;
    setText( m_textFormatter.valueToText(removeOld ? TQVariant() : m_origValue, add.toString()) );
//   setText( value.toString() );
     setCursorPosition(0); //ok?
    m_slotTextChanged_enabled = true;
}
 
TQVariant KexiDBLineEdit::value()
{
    return m_textFormatter.textToValue( text() );
#if 0 // moved to KexiTextFormatter
    if (! m_columnInfo)
        return TQVariant();
    const KexiDB::Field::Type t = m_columnInfo->field->type();
    switch (t) {
    case KexiDB::Field::Text:
    case KexiDB::Field::LongText:
        return text();
    case KexiDB::Field::Byte:
    case KexiDB::Field::ShortInteger:
        return text().toShort();
    case KexiDB::Field::Integer:
        return text().toInt();
    case KexiDB::Field::BigInteger:
        return text().toLongLong();
    case KexiDB::Field::Boolean:
        return text() == "1" ? TQVariant(true) : TQVariant(false);
    case KexiDB::Field::Date:
        return dateFormatter()->stringToVariant( text() );
    case KexiDB::Field::Time:
        return timeFormatter()->stringToVariant( text() );
    case KexiDB::Field::DateTime:
        return stringToDateTime(*dateFormatter(), *timeFormatter(), text());
    case KexiDB::Field::Float:
        return text().toFloat();
    case KexiDB::Field::Double:
        return text().toDouble();
    default:
        return TQVariant();
    }
    return text();
#endif
}
 
void KexiDBLineEdit::slotTextChanged(const TQString&)
{
    if (!m_slotTextChanged_enabled)
        return;
    signalValueChanged();
}
 
bool KexiDBLineEdit::valueIsNull()
{
    return valueIsEmpty(); //ok??? text().isNull();
}
 
bool KexiDBLineEdit::valueIsEmpty()
{
    return m_textFormatter.valueIsEmpty( text() );
#if 0 // moved to KexiTextFormatter
    if (text().isEmpty())
        return true;
 
    if (m_columnInfo) {
        const KexiDB::Field::Type t = m_columnInfo->field->type();
        if (t == KexiDB::Field::Date || )
            return dateFormatter()->isEmpty( text() );
        else if (t == KexiDB::Field::Time)
            return timeFormatter()->isEmpty( text() );
        else if (t == KexiDB::Field::Time)
            return dateTimeIsEmpty( *dateFormatter(), *timeFormatter(), text() );
    }

    return text().isEmpty();
#endif
}
 
bool KexiDBLineEdit::valueIsValid()
{
    return m_textFormatter.valueIsValid( text() );
#if 0 // moved to KexiTextFormatter
    if (!m_columnInfo)
        return true;
    if (valueIsEmpty()/*ok?*/)
        return true;
 
    const KexiDB::Field::Type t = m_columnInfo->field->type();
    if (t == KexiDB::Field::Date)
        return dateFormatter()->stringToVariant( text() ).isValid();
    else if (t == KexiDB::Field::Time)
        return timeFormatter()->stringToVariant( text() ).isValid();
    else if (t == KexiDB::Field::DateTime)
        return dateTimeIsValid( *dateFormatter(), *timeFormatter(), text() );

    return true;
#endif
}
 
bool KexiDBLineEdit::isReadOnly() const
{
    return m_internalReadOnly;
}
 
void KexiDBLineEdit::setReadOnly( bool readOnly )
{
#ifdef USE_KLineEdit_setReadOnly
    return KLineEdit::setReadOnly( readOnly );
#else
    m_internalReadOnly = readOnly;
    if (m_internalReadOnly) {
        m_readWriteValidator = validator();
        if (!m_readOnlyValidator)
        m_readOnlyValidator = new KexiDBLineEdit_ReadOnlyValidator(this);
        setValidator( m_readOnlyValidator );
    }
    else {
        //revert to r/w validator
        setValidator( m_readWriteValidator );
    }
    m_menuExtender.updatePopupMenuActions();
#endif
}
 
TQPopupMenu * KexiDBLineEdit::createPopupMenu()
{
    TQPopupMenu *contextMenu = KLineEdit::createPopupMenu();
    m_menuExtender.createTitle(contextMenu);
    return contextMenu;
}
 
 
TQWidget* KexiDBLineEdit::widget()
{
    return this;
}
 
bool KexiDBLineEdit::cursorAtStart()
{
    return cursorPosition()==0;
}
 
bool KexiDBLineEdit::cursorAtEnd()
{
    return cursorPosition()==(int)text().length();
}
 
void KexiDBLineEdit::clear()
{
    if (!m_internalReadOnly)
        KLineEdit::clear();
}
 
 
void KexiDBLineEdit::setColumnInfo(KexiDB::QueryColumnInfo* cinfo)
{
    KexiFormDataItemInterface::setColumnInfo(cinfo);
    m_textFormatter.setField( cinfo ? cinfo->field : 0 );
 
    if (!cinfo)
        return;

    setValidator( new KexiDB::FieldValidator(*cinfo->field, this) );
 
#if 0 // moved to KexiTextFormatter
    if (t==KexiDB::Field::Date) {
        setInputMask( dateFormatter()->inputMask() );
    }
    else if (t==KexiDB::Field::Time) {
//      setInputMask("00:00:00");
        setInputMask( timeFormatter()->inputMask() );
    }
    else if (t==KexiDB::Field::DateTime) {
        setInputMask( 
            dateTimeInputMask( *dateFormatter(), *timeFormatter() ) );
    }
#endif
    const TQString inputMask( m_textFormatter.inputMask() );
    if (!inputMask.isEmpty())
        setInputMask( inputMask );
 
    KexiDBTextWidgetInterface::setColumnInfo(cinfo, this);
}
 
/*todo
void KexiDBLineEdit::paint( TQPainter *p )
{
    KexiDBTextWidgetInterface::paint( this, &p, text().isEmpty(), alignment(), hasFocus() );
}*/
 
void KexiDBLineEdit::paintEvent ( TQPaintEvent *pe )
{
    KLineEdit::paintEvent( pe );
    TQPainter p(this);
    KexiDBTextWidgetInterface::paint( this, &p, text().isEmpty(), alignment(), hasFocus() );
}
 
bool KexiDBLineEdit::event( TQEvent * e )
{
    const bool ret = KLineEdit::event( e );
    KexiDBTextWidgetInterface::event(e, this, text().isEmpty());
    if (e->type()==TQEvent::FocusOut) {
        TQFocusEvent *fe = static_cast<TQFocusEvent*>(e);
//      if (fe->reason()!=TQFocusEvent::ActiveWindow && fe->reason()!=TQFocusEvent::Popup) {
        if (fe->reason()==TQFocusEvent::Tab || fe->reason()==TQFocusEvent::Backtab) {
        //display aligned to left after loosing the focus (only if this is tab/backtab event)
            setCursorPosition(0); //ok?
        }
    }
    return ret;
}
 
bool KexiDBLineEdit::appendStretchRequired(KexiDBAutoField* autoField) const
{
    return KexiDBAutoField::Top == autoField->labelPosition();
}
 
void KexiDBLineEdit::handleAction(const TQString& actionName)
{
    if (actionName=="edit_copy") {
        copy();
    }
    else if (actionName=="edit_paste") {
        paste();
    }
    else if (actionName=="edit_cut") {
        cut();
    }
}
 
void KexiDBLineEdit::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);
    setPalette(pal);
}
 
void KexiDBLineEdit::undo()
{
    cancelEditor();
}
 
void KexiDBLineEdit::moveCursorToEnd()
{
    KLineEdit::end(false);
}
 
void KexiDBLineEdit::moveCursorToStart()
{
    KLineEdit::home(false);
}
 
void KexiDBLineEdit::selectAll()
{
    KLineEdit::selectAll();
}
 
bool KexiDBLineEdit::keyPressed(TQKeyEvent *ke)
{
    Q_UNUSED(ke);
    return false;
}
 
#include "kexidblineedit.moc"