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File: toresultcombo.cpp

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/*****
*
* TOra - An Oracle Toolkit for DBA's and developers
* Copyright (C) 2003-2005 Quest Software, Inc
* Portions Copyright (C) 2005 Other Contributors
* 
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation;  only version 2 of
* the License is valid for this program.
* 
* 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 General Public License for more details.
* 
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*
*      As a special exception, you have permission to link this program
*      with the Oracle Client libraries and distribute executables, as long
*      as you follow the requirements of the GNU GPL in regard to all of the
*      software in the executable aside from Oracle client libraries.
*
*      Specifically you are not permitted to link this program with the
*      Qt/UNIX, Qt/Windows or Qt Non Commercial products of TrollTech.
*      And you are not permitted to distribute binaries compiled against
*      these libraries without written consent from Quest Software, Inc.
*      Observe that this does not disallow linking to the Qt Free Edition.
*
*      You may link this product with any GPL'd Qt library such as Qt/Free
*
* All trademarks belong to their respective owners.
*
*****/

#include "utils.h"

#include "toconf.h"
#include "toconnection.h"
#include "tonoblockquery.h"
#include "toresultcombo.h"
#include "tosql.h"
#include "totool.h"

#include "toresultcombo.moc"

toResultCombo::toResultCombo(QWidget *parent, const char *name)
        : QComboBox(parent, name), Query(0)
{
    connect(&Poll, SIGNAL(timeout()), this, SLOT(poll()));
    connect(this, SIGNAL(activated(int)),
            this, SLOT(changeSelected(void)));
}

toResultCombo::~toResultCombo()
{    
}

void toResultCombo::query(const QString &sql, const toQList &param)
{
    if (!setSQLParams(sql, param))
        return ;

    try
    {
        clear();
        insertStringList(Additional);
        for (unsigned int i = 0;i < Additional.count();i++)
            if (Additional[i] == Selected)
                setCurrentItem(i);

        Query = new toNoBlockQuery(connection(), toQuery::Background, sql, param);
        Poll.start(100);
    }
    TOCATCH
}

void toResultCombo::changeSelected(void)
{
    Selected = currentText();
}

void toResultCombo::poll(void)
{
    try
    {
        if (!toCheckModal(this))
            return ;
        if (Query && Query->poll())
        {
            while (Query->poll() && !Query->eof())
            {
                QString t = Query->readValue();
                insertItem(t);
                if (t == Selected)
                    setCurrentItem(count() - 1);
            }

            if (Query->eof())
            {
                Poll.stop();
                setFont(font()); // Small hack to invalidate size hint of combobox which should resize to needed size.
                updateGeometry();
            }
        }
    }
    catch (const QString &exc)
    {
        Poll.stop();
        toStatusMessage(exc);
    }
}