- Qt 5.5
- Qt SQL
- SQL Browser
- browser.h Example File
- Qt 5.5.1 Reference Documentation

# browser.h Example File

sqlbrowser/browser.h

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the demonstration applications of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:LGPL21$
    ** Commercial License Usage
    ** Licensees holding valid commercial Qt licenses may use this file in
    ** accordance with the commercial license agreement provided with the
    ** Software or, alternatively, in accordance with the terms contained in
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    ** information use the contact form at http://www.qt.io/contact-us.
    **
    ** GNU Lesser General Public License Usage
    ** Alternatively, this file may be used under the terms of the GNU Lesser
    ** General Public License version 2.1 or version 3 as published by the Free
    ** Software Foundation and appearing in the file LICENSE.LGPLv21 and
    ** LICENSE.LGPLv3 included in the packaging of this file. Please review the
    ** following information to ensure the GNU Lesser General Public License
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    ****************************************************************************/

    #ifndef BROWSER_H
    #define BROWSER_H

    #include <QWidget>
    #include <QSqlTableModel>
    #include "ui_browserwidget.h"

    class ConnectionWidget;
    QT_FORWARD_DECLARE_CLASS(QTableView)
    QT_FORWARD_DECLARE_CLASS(QPushButton)
    QT_FORWARD_DECLARE_CLASS(QTextEdit)
    QT_FORWARD_DECLARE_CLASS(QSqlError)

    class Browser: public QWidget, private Ui::Browser
    {
        Q_OBJECT
    public:
        Browser(QWidget *parent = 0);
        virtual ~Browser();

        QSqlError addConnection(const QString &driver, const QString &dbName, const QString &host,
                      const QString &user, const QString &passwd, int port = -1);

        void insertRow();
        void deleteRow();
        void updateActions();

    public slots:
        void exec();
        void showTable(const QString &table);
        void showMetaData(const QString &table);
        void addConnection();
        void currentChanged() { updateActions(); }
        void about();

        void on_insertRowAction_triggered()
        { insertRow(); }
        void on_deleteRowAction_triggered()
        { deleteRow(); }
        void on_fieldStrategyAction_triggered();
        void on_rowStrategyAction_triggered();
        void on_manualStrategyAction_triggered();
        void on_submitAction_triggered();
        void on_revertAction_triggered();
        void on_selectAction_triggered();
        void on_connectionWidget_tableActivated(const QString &table)
        { showTable(table); }
        void on_connectionWidget_metaDataRequested(const QString &table)
        { showMetaData(table); }
        void on_submitButton_clicked()
        {
            exec();
            sqlEdit->setFocus();
        }
        void on_clearButton_clicked()
        {
            sqlEdit->clear();
            sqlEdit->setFocus();
        }

    signals:
        void statusMessage(const QString &message);
    };

    class CustomModel: public QSqlTableModel
    {
        Q_OBJECT
    public:
        explicit CustomModel(QObject *parent = 0, QSqlDatabase db = QSqlDatabase()):QSqlTableModel(parent, db) {}
        QVariant data(const QModelIndex &idx, int role) const Q_DECL_OVERRIDE
        {
            if (role == Qt::BackgroundRole && isDirty(idx))
                return QBrush(QColor(Qt::yellow));
            return QSqlTableModel::data(idx, role);
        }
    };

    #endif