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#include "q3sqlpropertymap.h"

#ifndef QT_NO_SQL_FORM

#include "qwidget.h"

#include "q3cleanuphandler.h"

#include "qmetaobject.h"

#include "qmap.h"

QT_BEGIN_NAMESPACE

class Q3SqlPropertyMapPrivate

{

public:

    Q3SqlPropertyMapPrivate() {}

    QMap<QByteArray, QByteArray> propertyMap;

};

/*!

    \class Q3SqlPropertyMap

    \brief The Q3SqlPropertyMap class is used to map widgets to SQL fields.

    \compat

    The SQL module uses Qt \link properties.html object

    properties\endlink to insert and extract values from editor

    widgets.

    This class is used to map editors to SQL fields. This works by

    associating SQL editor class names to the properties used to

    insert and extract values to/from the editor.

    For example, a QLineEdit can be used to edit text strings and

    other data types in Q3DataTables or Q3SqlForms. Several properties

    are defined in QLineEdit, but only the \e text property is used to

    insert and extract text from a QLineEdit. Both Q3DataTable and

    Q3SqlForm use the global Q3SqlPropertyMap for inserting and

    extracting values to and from an editor widget. The global

    property map defines several common widgets and properties that

    are suitable for many applications. You can add and remove widget

    properties to suit your specific needs.

    If you want to use custom editors with your Q3DataTable or

    Q3SqlForm, you must install your own Q3SqlPropertyMap for that table

    or form. Example:

    \snippet doc/src/snippets/code/src_qt3support_sql_q3sqlpropertymap.cpp 0

    You can also replace the global Q3SqlPropertyMap that is used by

    default. (Bear in mind that Q3SqlPropertyMap takes ownership of the

    new default map.)

    \snippet doc/src/snippets/code/src_qt3support_sql_q3sqlpropertymap.cpp 1

    \sa Q3DataTable, Q3SqlForm, Q3SqlEditorFactory

*/

/*!

Constructs a Q3SqlPropertyMap.

The default property mappings used by Qt widgets are:

\table

\header \i Widgets \i Property

\row \i \l QCheckBox,

        \l QRadioButton

     \i checked

\row \i \l QComboBox,

        \l Q3ListBox

     \i currentItem

\row \i \l Q3DateEdit

     \i date

\row \i \l Q3DateTimeEdit

        \l QDateTimeEdit

     \i dateTime

\row \i \l QTextBrowser

     \i source

\row \i \l QAbstractButton,

        \l QDial,

        \l QLabel,

        \l QLineEdit,

        \l Q3MultiLineEdit,

        \l QPushButton,

        \l QTextEdit,

     \i text

\row \i \l Q3TimeEdit

     \i time

\row \i \l QLCDNumber,

        \l QScrollBar

        \l QSlider,

        \l QSpinBox

     \i value

\endtable

*/

Q3SqlPropertyMap::Q3SqlPropertyMap()

{

    d = new Q3SqlPropertyMapPrivate();

    const struct MapData {

        const char *classname;

        const char *property;

    } mapData[] = {

        { "Q3DateEdit", "date" },

        { "Q3DateTimeEdit", "dateTime" },

        { "Q3ListBox", "currentItem" },

        { "Q3TimeEdit", "time" },

        { "QAbstractButton", "text" },

        { "QCheckBox", "checked" },

        { "QRadioButton", "checked" },

        { "QComboBox", "currentIndex" },

        { "QDateTimeEdit", "dateTime" },

        { "QDial", "value" },

        { "QLabel", "text" },

        { "QLCDNumber", "value" },

        { "QLineEdit", "text" },

        { "QPushButton", "text" },

        { "QScrollBar", "value" },

        { "QSlider", "value" },

        { "QSpinBox", "value" },

        { "QTabBar", "currentTab" },

        { "QTabWidget", "currentPage" },

        { "QTextBrowser", "source" },

        { "QTextEdit", "text" },

        { "QGroupBox", "checked" }

    };

    const MapData *m = mapData;

    for (uint i = 0; i < sizeof(mapData)/sizeof(MapData); i++, m++)

        d->propertyMap.insert(m->classname, m->property);

}

/*!

    Destroys the Q3SqlPropertyMap.

    Note that if the Q3SqlPropertyMap is installed with

    installPropertyMap() the object it was installed into, e.g. the

    Q3SqlForm, takes ownership and will delete the Q3SqlPropertyMap when

    necessary.

*/

Q3SqlPropertyMap::~Q3SqlPropertyMap()

{

    delete d;

}

/*!

    Returns the mapped property of \a widget as a QVariant.

*/

QVariant Q3SqlPropertyMap::property(QWidget * widget)

{

    if(!widget) return QVariant();

    const QMetaObject* mo = widget->metaObject();

    while (mo && !d->propertyMap.contains(mo->className()))

        mo = mo->superClass();

    if (!mo) {

        qWarning("Q3SqlPropertyMap::property: %s does not exist", widget->metaObject()->className());

        return QVariant();

    }

    return widget->property(d->propertyMap[mo->className()]);

}

/*!

    Sets the property of \a widget to \a value.

*/

void Q3SqlPropertyMap::setProperty(QWidget * widget, const QVariant & value)

{

    if(!widget) return;

    const QMetaObject* mo = widget->metaObject();

    while (mo && !d->propertyMap.contains(mo->className()))

        mo = mo->superClass();

    if (!mo) {

        qWarning("Q3SqlPropertyMap::setProperty: %s not handled by Q3SqlPropertyMap", widget->metaObject()->className());

        return;

    }

    widget->setProperty(d->propertyMap[mo->className()], value);

}

/*!

  Insert a new classname/property pair, which is used for custom SQL

  field editors. There \e must be a Q_PROPERTY() clause in the \a

  classname class declaration for the \a property.

*/

void Q3SqlPropertyMap::insert(const QString & classname,

                              const QString & property)

{

    d->propertyMap[classname.latin1()] = property.latin1();

}

/*!

    Removes \a classname from the map.

*/

void Q3SqlPropertyMap::remove(const QString & classname)

{

    d->propertyMap.remove(classname.latin1());

}

static Q3SqlPropertyMap * defaultmap = 0;

static Q3CleanupHandler< Q3SqlPropertyMap > qsql_cleanup_property_map;

/*!

    Returns the application global Q3SqlPropertyMap.

*/

Q3SqlPropertyMap * Q3SqlPropertyMap::defaultMap()

{

    if(defaultmap == 0){

        defaultmap = new Q3SqlPropertyMap();

        qsql_cleanup_property_map.add(&defaultmap);

    }

    return defaultmap;

}

/*!

    Replaces the global default property map with \a map. All

    Q3DataTable and Q3SqlForm instantiations will use this new map for

    inserting and extracting values to and from editors.

    \e{Q3SqlPropertyMap takes ownership of \a map, and destroys it

    when it is no longer needed.}

*/

void Q3SqlPropertyMap::installDefaultMap(Q3SqlPropertyMap * map)

{

    if(map == 0) return;

    if(defaultmap != 0){

        qsql_cleanup_property_map.remove(&defaultmap);

        delete defaultmap;

    }

    defaultmap = map;

    qsql_cleanup_property_map.add(&defaultmap);

}

QT_END_NAMESPACE

#endif // QT_NO_SQL_FORM