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** Copyright (C) 2016 The Qt Company Ltd.
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** This file is part of the Qt Quick Templates 2 module of the Qt Toolkit.
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****************************************************************************/

#include "qquickgroupbox_p.h"
#include "qquickframe_p_p.h"

#include <QtGui/qpa/qplatformtheme.h>

QT_BEGIN_NAMESPACE

/*!
    \qmltype GroupBox
    \inherits Frame
    \instantiates QQuickGroupBox
    \inqmlmodule QtQuick.Controls
    \since 5.7
    \ingroup qtquickcontrols2-containers
    \brief A frame with a logical group of controls.

    GroupBox is used to layout a logical group of controls together, within
    a titled visual frame. GroupBox does not provide a layout of its own, but
    requires you to position its contents, for instance by creating a \l RowLayout
    or a \l ColumnLayout.

    Items declared as children of a GroupBox are automatically parented to the
    GroupBox's contentItem. Items created dynamically need to be explicitly
    parented to the contentItem.

    If only a single item is used within a GroupBox, it will resize to fit the
    implicit size of its contained item. This makes it particularly suitable
    for use together with layouts.

    \image qtquickcontrols2-groupbox.png

    \snippet qtquickcontrols2-groupbox.qml 1

    \section2 Checkable GroupBox

    Even though GroupBox has no built-in check box, it is straightforward
    to create a checkable GroupBox by pairing it with a CheckBox.

    \image qtquickcontrols2-groupbox-checkable.png

    It is a common pattern to enable or disable the groupbox's children when
    its checkbox is toggled on or off, but it is the application that decides
    on the behavior of the groupbox.

    \snippet qtquickcontrols2-groupbox-checkable.qml 1

    \sa CheckBox, {Customizing GroupBox}, {Container Controls}
*/

class QQuickGroupBoxPrivate : public QQuickFramePrivate
{
public:
    QQuickGroupBoxPrivate() : label(nullptr) { }

    QString title;
    QQuickItem *label;
};

QQuickGroupBox::QQuickGroupBox(QQuickItem *parent) :
    QQuickFrame(*(new QQuickGroupBoxPrivate), parent)
{
}

/*!
    \qmlproperty string QtQuick.Controls::GroupBox::title

    This property holds the title.
*/
QString QQuickGroupBox::title() const
{
    Q_D(const QQuickGroupBox);
    return d->title;
}

void QQuickGroupBox::setTitle(const QString &title)
{
    Q_D(QQuickGroupBox);
    if (d->title == title)
        return;

    d->title = title;
    emit titleChanged();
}

/*!
    \qmlproperty Item QtQuick.Controls::GroupBox::label

    This property holds the label item that visualizes \l title.

    \sa {Customizing GroupBox}
*/
QQuickItem *QQuickGroupBox::label() const
{
    Q_D(const QQuickGroupBox);
    return d->label;
}

void QQuickGroupBox::setLabel(QQuickItem *label)
{
    Q_D(QQuickGroupBox);
    if (d->label == label)
        return;

    delete d->label;
    d->label = label;
    if (label && !label->parentItem())
        label->setParentItem(this);
    emit labelChanged();
}

QFont QQuickGroupBox::defaultFont() const
{
    return QQuickControlPrivate::themeFont(QPlatformTheme::GroupBoxTitleFont);
}

QT_END_NAMESPACE
