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#include "private/qdeclarativesystempalette_p.h"

#include <QApplication>

#include <private/qobject_p.h>

QT_BEGIN_NAMESPACE

class QDeclarativeSystemPalettePrivate : public QObjectPrivate

{

public:

    QPalette palette;

    QPalette::ColorGroup group;

};

/*!

    \qmlclass SystemPalette QDeclarativeSystemPalette

    \since 4.7

    \brief The SystemPalette element provides access to the Qt palettes.

    The SystemPalette element provides access to the Qt application

    palettes. This provides information about the standard colors used 

    for application windows, buttons and other features. These colors

    are grouped into three \e {color groups}: \c Active, \c Inactive,

    and \c Disabled.  See the QPalette documentation for details about

    color groups and the properties provided by SystemPalette.

    This can be used to color items in a way that provides a more

    native look and feel.

    The following example creates a palette from the \c Active color

    group and uses this to color the window and text items

    appropriately:

    \snippet doc/src/snippets/declarative/systempalette.qml 0

    \sa QPalette

*/

QDeclarativeSystemPalette::QDeclarativeSystemPalette(QObject *parent)

    : QObject(*(new QDeclarativeSystemPalettePrivate), parent)

{

    Q_D(QDeclarativeSystemPalette);

    d->palette = QApplication::palette();

    d->group = QPalette::Active;

    qApp->installEventFilter(this);

}

QDeclarativeSystemPalette::~QDeclarativeSystemPalette()

{

}

/*!

    \qmlproperty color SystemPalette::window

    The window (general background) color of the current color group.

    \sa QPalette::ColorRole

*/

QColor QDeclarativeSystemPalette::window() const

{

    Q_D(const QDeclarativeSystemPalette);

    return d->palette.color(d->group, QPalette::Window);

}

/*!

    \qmlproperty color SystemPalette::windowText

    The window text (general foreground) color of the current color group.

    \sa QPalette::ColorRole

*/

QColor QDeclarativeSystemPalette::windowText() const

{

    Q_D(const QDeclarativeSystemPalette);

    return d->palette.color(d->group, QPalette::WindowText);

}

/*!

    \qmlproperty color SystemPalette::base

    The base color of the current color group.

    \sa QPalette::ColorRole

*/

QColor QDeclarativeSystemPalette::base() const

{

    Q_D(const QDeclarativeSystemPalette);

    return d->palette.color(d->group, QPalette::Base);

}

/*!

    \qmlproperty color SystemPalette::text

    The text color of the current color group.

    \sa QPalette::ColorRole

*/

QColor QDeclarativeSystemPalette::text() const

{

    Q_D(const QDeclarativeSystemPalette);

    return d->palette.color(d->group, QPalette::Text);

}

/*!

    \qmlproperty color SystemPalette::alternateBase

    The alternate base color of the current color group.

    \sa QPalette::ColorRole

*/

QColor QDeclarativeSystemPalette::alternateBase() const

{

    Q_D(const QDeclarativeSystemPalette);

    return d->palette.color(d->group, QPalette::AlternateBase);

}

/*!

    \qmlproperty color SystemPalette::button

    The button color of the current color group.

    \sa QPalette::ColorRole

*/

QColor QDeclarativeSystemPalette::button() const

{

    Q_D(const QDeclarativeSystemPalette);

    return d->palette.color(d->group, QPalette::Button);

}

/*!

    \qmlproperty color SystemPalette::buttonText

    The button text foreground color of the current color group.

    \sa QPalette::ColorRole

*/

QColor QDeclarativeSystemPalette::buttonText() const

{

    Q_D(const QDeclarativeSystemPalette);

    return d->palette.color(d->group, QPalette::ButtonText);

}

/*!

    \qmlproperty color SystemPalette::light

    The light color of the current color group.

    \sa QPalette::ColorRole

*/

QColor QDeclarativeSystemPalette::light() const

{

    Q_D(const QDeclarativeSystemPalette);

    return d->palette.color(d->group, QPalette::Light);

}

/*!

    \qmlproperty color SystemPalette::midlight

    The midlight color of the current color group.

    \sa QPalette::ColorRole

*/

QColor QDeclarativeSystemPalette::midlight() const

{

    Q_D(const QDeclarativeSystemPalette);

    return d->palette.color(d->group, QPalette::Midlight);

}

/*!

    \qmlproperty color SystemPalette::dark

    The dark color of the current color group.

    \sa QPalette::ColorRole

*/

QColor QDeclarativeSystemPalette::dark() const

{

    Q_D(const QDeclarativeSystemPalette);

    return d->palette.color(d->group, QPalette::Dark);

}

/*!

    \qmlproperty color SystemPalette::mid

    The mid color of the current color group.

    \sa QPalette::ColorRole

*/

QColor QDeclarativeSystemPalette::mid() const

{

    Q_D(const QDeclarativeSystemPalette);

    return d->palette.color(d->group, QPalette::Mid);

}

/*!

    \qmlproperty color SystemPalette::shadow

    The shadow color of the current color group.

    \sa QPalette::ColorRole

*/

QColor QDeclarativeSystemPalette::shadow() const

{

    Q_D(const QDeclarativeSystemPalette);

    return d->palette.color(d->group, QPalette::Shadow);

}

/*!

    \qmlproperty color SystemPalette::highlight

    The highlight color of the current color group.

    \sa QPalette::ColorRole

*/

QColor QDeclarativeSystemPalette::highlight() const

{

    Q_D(const QDeclarativeSystemPalette);

    return d->palette.color(d->group, QPalette::Highlight);

}

/*!

    \qmlproperty color SystemPalette::highlightedText

    The highlighted text color of the current color group.

    \sa QPalette::ColorRole

*/

QColor QDeclarativeSystemPalette::highlightedText() const

{

    Q_D(const QDeclarativeSystemPalette);

    return d->palette.color(d->group, QPalette::HighlightedText);

}

/*!

    \qmlproperty enumeration SystemPalette::colorGroup

    The color group of the palette. This can be one of:

    \list

    \o SystemPalette.Active (default)

    \o SystemPalette.Inactive

    \o SystemPalette.Disabled

    \endlist

    \sa QPalette::ColorGroup

*/

QDeclarativeSystemPalette::ColorGroup QDeclarativeSystemPalette::colorGroup() const

{

    Q_D(const QDeclarativeSystemPalette);

    return (QDeclarativeSystemPalette::ColorGroup)d->group;

}

void QDeclarativeSystemPalette::setColorGroup(QDeclarativeSystemPalette::ColorGroup colorGroup)

{

    Q_D(QDeclarativeSystemPalette);

    d->group = (QPalette::ColorGroup)colorGroup;

    emit paletteChanged();

}

bool QDeclarativeSystemPalette::eventFilter(QObject *watched, QEvent *event)

{

    if (watched == qApp) {

        if (event->type() == QEvent::ApplicationPaletteChange) {

            QApplication::postEvent(this, new QEvent(QEvent::ApplicationPaletteChange));

            return false;

        }

    }

    return QObject::eventFilter(watched, event);

}

bool QDeclarativeSystemPalette::event(QEvent *event)

{

    Q_D(QDeclarativeSystemPalette);

    if (event->type() == QEvent::ApplicationPaletteChange) {

        d->palette = QApplication::palette();

        emit paletteChanged();

        return true;

    }

    return QObject::event(event);

}

QT_END_NAMESPACE