F:/KPlato/koffice/libs/koproperty/editors/combobox.cpp

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/* This file is part of the KDE project
   Copyright (C) 2004 Cedric Pasteur <cedric.pasteur@free.fr>
   Copyright (C) 2004  Alexander Dymo <cloudtemple@mskat.net>

   This library 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 library 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 library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
*/
#include "combobox.h"

#include <QLayout>
#include <QMap>
#include <QVariant>
#include <QPainter>
#include <QHBoxLayout>

#include <kcombobox.h>
#include <kdebug.h>

#include "property.h"

using namespace KoProperty;

ComboBox::ComboBox(Property *property, QWidget *parent)
 : Widget(property, parent)
 , m_setValueEnabled(true)
{
        QHBoxLayout *l = new QHBoxLayout(this);
        l->setMargin(0);
        l->setSpacing(0);
        m_edit = new KComboBox(this);
        m_edit->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
        m_edit->setMinimumHeight(5);
        l->addWidget(m_edit);

        m_edit->setEditable(false);
        m_edit->setInsertPolicy(QComboBox::NoInsert);
        m_edit->setMinimumSize(10, 0); // to allow the combo to be resized to a small size
        m_edit->setAutoCompletion(true);
        m_edit->setContextMenuEnabled(false);

        if (this->property()->listData()) {
                fillBox();
        }
//not needed for combo  setLeavesTheSpaceForRevertButton(true);

        setFocusWidget(m_edit);
        connect(m_edit, SIGNAL(activated(int)), this, SLOT(slotValueChanged(int)));
}

ComboBox::~ComboBox()
{
}

QVariant
ComboBox::value() const
{
        if (!property()->listData()) {
                kopropertywarn << "ComboBox::value(): propery listData not available!" << endl;
                return QVariant();
        }
        const int idx = m_edit->currentIndex();
        if (idx<0 || idx>=(int)property()->listData()->keys.count())
                return QVariant();
        return QVariant( property()->listData()->keys[idx] );
//      if(property()->listData() && property()->listData()->contains(m_edit->currentText()))
//              return (*(property()->valueList()))[m_edit->currentText()];
//      return QVariant();
}

void
ComboBox::setValue(const QVariant &value, bool emitChange)
{
        if (!property() || !property()->listData()) {
                kopropertywarn << "ComboBox::value(): propery listData not available!" << endl;
                return;
        }
        if (!m_setValueEnabled)
                return;
        int idx = property()->listData()->keys.indexOf( value.toString() );
        kDebug() << "********** " <<idx << " " <<value.toString()<<endl;
        if (idx>=0 && idx<m_edit->count()) {
                m_edit->setCurrentIndex(idx);
        }
        else {
                if (idx<0) {
                        kopropertywarn << "ComboBox::setValue(): NO SUCH KEY '" << value.toString() 
                                << "' (property '" << property()->name() << "')" << endl;
                } else {
                        QStringList list;
                        for (int i=0; i<m_edit->count(); i++)
                                list += m_edit->itemText(i);
                        kopropertywarn << "ComboBox::setValue(): NO SUCH INDEX WITHIN COMBOBOX: " << idx 
                                << " count=" << m_edit->count() << " value='" << value.toString() 
                                << "' (property '" << property()->name() << "')\nActual combobox contents: "
                                << list << endl;
                }
                m_edit->setItemText(m_edit->currentIndex(), QString::null);
        }

        if(value.isNull())
                return;

//      m_edit->blockSignals(true);
//      m_edit->setCurrentText(keyForValue(value));
//      m_edit->blockSignals(false);
        if (emitChange)
                emit valueChanged(this);
}

void
ComboBox::drawViewer(QPainter *p, const QColorGroup &cg, const QRect &r, const QVariant &value)
{
        QString txt;
        if (property()->listData()) {
                const int idx = property()->listData()->keys.indexOf( value );
                if (idx>=0)
                        txt = property()->listData()->names[ idx ];
        }

        Widget::drawViewer(p, cg, r, txt); //keyForValue(value));
//      p->eraseRect(r);
//      p->drawText(r, Qt::AlignLeft | Qt::AlignVCenter | Qt::TextSingleLine, keyForValue(value));
}

void
ComboBox::fillBox()
{
        m_edit->clear();
        //m_edit->clearContents();

        if(!property())
                return;
        if (!property()->listData()) {
                kopropertywarn << "ComboBox::fillBox(): propery listData not available!" << endl;
                return;
        }

        m_edit->insertItems(0, property()->listData()->names);
        KCompletion *comp = m_edit->completionObject();
        comp->insertItems(property()->listData()->names);
        comp->setCompletionMode(KGlobalSettings::CompletionShell);
}

void
ComboBox::setProperty(Property *prop)
{
        const bool b = (property() == prop);
        m_setValueEnabled = false; //setValue() couldn't be called before fillBox()
        Widget::setProperty(prop);
        m_setValueEnabled = true;
        if(!b)
                fillBox();
        if(prop)
                setValue(prop->value(), false); //now the value can be set
}

void
ComboBox::slotValueChanged(int)
{
        emit valueChanged(this);
}

void
ComboBox::setReadOnlyInternal(bool readOnly)
{
        setVisibleFlag(!readOnly);
}


/*QString
ComboBox::keyForValue(const QVariant &value)
{
        const QMap<QString, QVariant> *list = property()->valueList();
        Property::ListData *list = property()->listData();

        if (!list)
                return QString::null;
        int idx = listData->keys.findIndex( value );


        QMap<QString, QVariant>::ConstIterator endIt = list->constEnd();
        for(QMap<QString, QVariant>::ConstIterator it = list->constBegin(); it != endIt; ++it) {
                if(it.data() == value)
                        return it.key();
        }
        return QString::null;
}*/


#include "combobox.moc"

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