Home | All Classes | Main Classes | Annotated | Grouped Classes | Functions |

# sql/overview/table4/main.cpp Example File

    /****************************************************************************
    ** $Id: qt/main.cpp   3.3.7   edited Aug 31 2005 $
    **
    ** Copyright (C) 1992-2005 Trolltech AS.  All rights reserved.
    **
    ** This file is part of an example program for Qt.  This example
    ** program may be used, distributed and modified without limitation.
    **
    *****************************************************************************/

    #include "main.h"

    StatusPicker::StatusPicker( QWidget *parent, const char *name )
        : QComboBox( parent, name )
    {
        QSqlCursor cur( "status" );
        cur.select( cur.index( "name" ) );

        int i = 0;
        while ( cur.next() ) {
            insertItem( cur.value( "name" ).toString(), i );
            index2id[i] = cur.value( "id" ).toInt();
            i++;
        }
    }

    int StatusPicker::statusId() const
    {
        return index2id[ currentItem() ];
    }

    void StatusPicker::setStatusId( int statusid )
    {
        QMap<int,int>::Iterator it;
        for ( it = index2id.begin(); it != index2id.end(); ++it ) {
            if ( it.data() == statusid ) {
                setCurrentItem( it.key() );
                break;
            }
        }
    }

    void CustomTable::paintField( QPainter * p, const QSqlField* field,
                                  const QRect & cr, bool b)
    {
        if ( !field )
            return;
        if ( field->name() == "statusid" ) {
            QSqlQuery query( "SELECT name FROM status WHERE id=" +
                         field->value().toString() );
            QString text;
            if ( query.next() ) {
                text = query.value( 0 ).toString();
            }
            p->drawText( 2,2, cr.width()-4, cr.height()-4, fieldAlignment( field ), text );
        }
        else {
            QDataTable::paintField( p, field, cr, b) ;
        }
    }

    QWidget *CustomSqlEditorFactory::createEditor(
        QWidget *parent, const QSqlField *field )
    {
        if ( field->name() == "statusid" ) {
            QWidget *editor = new StatusPicker( parent );
            return editor;
        }

        return QSqlEditorFactory::createEditor( parent, field );
    }

    int main( int argc, char *argv[] )
    {
        QApplication app( argc, argv );

        if ( createConnections() ) {
            QSqlCursor staffCursor( "staff" );

            CustomTable             *staffTable     = new CustomTable( &staffCursor );
            QSqlPropertyMap         *propMap        = new QSqlPropertyMap();
            CustomSqlEditorFactory  *editorFactory  = new CustomSqlEditorFactory();
            propMap->insert( "StatusPicker", "statusid" );
            staffTable->installPropertyMap( propMap );
            staffTable->installEditorFactory( editorFactory );

            app.setMainWidget( staffTable );

            staffTable->addColumn( "forename", "Forename" );
            staffTable->addColumn( "surname",  "Surname" );
            staffTable->addColumn( "salary",   "Annual Salary" );
            staffTable->addColumn( "statusid", "Status" );

            QStringList order = QStringList() << "surname" << "forename";
            staffTable->setSort( order );

            staffTable->refresh();
            staffTable->show();

            return app.exec();
        }

        return 1;
    }