kexidataiteminterface.cpp

/* This file is part of the KDE project
   Copyright (C) 2005-2006 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 "kexidataiteminterface.h"
 
#include <kdebug.h>
 
KexiDataItemChangesListener::KexiDataItemChangesListener()
{
}
 
KexiDataItemChangesListener::~KexiDataItemChangesListener()
{
}
 
//-----------------------------------------------
 
KexiDataItemInterface::KexiDataItemInterface()
 : m_listener(0)
 , m_listenerIsTQObject(false)
 , m_parentDataItemInterface(0)
 , m_hasFocusableWidget(true)
 , m_disable_signalValueChanged(false)
 , m_acceptEditorAfterDeleteContents(false)
{
}
 
KexiDataItemInterface::~KexiDataItemInterface()
{
}
 
void KexiDataItemInterface::setValue(const TQVariant& value, const TQVariant& add, 
    bool removeOld, const TQVariant* visibleValue)
{
    m_disable_signalValueChanged = true; //to prevent emmiting valueChanged()
//needed?   clear();
    if (dynamic_cast<TQObject*>(this)) {
        kdDebug() << "KexiDataItemInterface::setValue(): " <<
            dynamic_cast<TQObject*>(this)->className() << " " 
            << dynamic_cast<TQWidget*>(this)->name()
            << " value=" << value << " add=" << add << endl;
    }
    m_origValue = value;
    setValueInternal(add, removeOld);
    if (visibleValue)
        setVisibleValueInternal(*visibleValue);
    m_disable_signalValueChanged = false;
}
 
void KexiDataItemInterface::setVisibleValueInternal(const TQVariant& value)
{
    Q_UNUSED(value);
}
 
void KexiDataItemInterface::signalValueChanged()
{
    if (m_disable_signalValueChanged || isReadOnly())
        return;
    if (m_parentDataItemInterface) {
        m_parentDataItemInterface->signalValueChanged();
        return;
    }
    if (m_listener) {
        beforeSignalValueChanged();
        m_listener->valueChanged(this);
    }
}
 
bool KexiDataItemInterface::valueChanged()
{
//  bool ok;
//  kdDebug() << m_origValue.toString() << " ? " << value(ok).toString() << endl;
//  return (m_origValue != value(ok)) && ok;
    kdDebug() << "KexiDataItemInterface::valueChanged(): " << m_origValue.toString() << " ? " << value().toString() << endl;
    return m_origValue != value();
}
 
/*
void KexiDataItemInterface::setValue(const TQVariant& value)
{
    m_disable_signalValueChanged = true; //to prevent emmiting valueChanged()
    setValueInternal( value );
    m_disable_signalValueChanged = false;
}*/
 
KexiDataItemChangesListener* KexiDataItemInterface::listener()
{
    if (!m_listener || !m_listenerIsTQObject)
        return m_listener;
    if (!m_listenerObject)
        m_listener = 0; //destroyed, update pointer
    return m_listener;
}
 
void KexiDataItemInterface::installListener(KexiDataItemChangesListener* listener)
{
    m_listener = listener;
    m_listenerIsTQObject = dynamic_cast<TQObject*>(listener);
    if (m_listenerIsTQObject)
        m_listenerObject = dynamic_cast<TQObject*>(listener);
}
 
void KexiDataItemInterface::showFocus( const TQRect& r, bool readOnly )
{
    Q_UNUSED(r);
    Q_UNUSED(readOnly);
}
 
void KexiDataItemInterface::hideFocus()
{
}
 
void KexiDataItemInterface::clickedOnContents()
{
}
 
bool KexiDataItemInterface::valueIsValid()
{
    return true;
}
 
void KexiDataItemInterface::setParentDataItemInterface(KexiDataItemInterface* parentDataItemInterface)
{
    m_parentDataItemInterface = parentDataItemInterface;
}
 
bool KexiDataItemInterface::cursorAtNewRow()
{
    return listener() ? listener()->cursorAtNewRow() : false;
}