qwidgetaction.cpp

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#include "qwidgetaction.h"
#include "qdebug.h"

#ifndef QT_NO_ACTION
#include "qwidgetaction_p.h"

QT_BEGIN_NAMESPACE

QWidgetAction::QWidgetAction(QObject *parent)
    : QAction(*(new QWidgetActionPrivate), parent)
{
}

QWidgetAction::~QWidgetAction()
{
    Q_D(QWidgetAction);
    for (int i = 0; i < d->createdWidgets.count(); ++i)
        disconnect(d->createdWidgets.at(i), SIGNAL(destroyed(QObject*)),
                   this, SLOT(_q_widgetDestroyed(QObject*)));
    QList<QWidget *> widgetsToDelete = d->createdWidgets;
    d->createdWidgets.clear();
    qDeleteAll(widgetsToDelete);
    delete d->defaultWidget;
}

void QWidgetAction::setDefaultWidget(QWidget *widget)
{
    Q_D(QWidgetAction);
    if (widget == d->defaultWidget || d->defaultWidgetInUse)
        return;
    delete d->defaultWidget;
    d->defaultWidget = widget;
    if (!widget)
        return;

    setVisible(!(widget->isHidden() && widget->testAttribute(Qt::WA_WState_ExplicitShowHide)));
    d->defaultWidget->hide();
    d->defaultWidget->setParent(0);
    d->defaultWidgetInUse = false;
    if (!isEnabled())
        d->defaultWidget->setEnabled(false);
}

QWidget *QWidgetAction::defaultWidget() const
{
    Q_D(const QWidgetAction);
    return d->defaultWidget;
}

QWidget *QWidgetAction::requestWidget(QWidget *parent)
{
    Q_D(QWidgetAction);

    QWidget *w = createWidget(parent);
    if (!w) {
        if (d->defaultWidgetInUse || !d->defaultWidget)
            return 0;
        d->defaultWidget->setParent(parent);
        d->defaultWidgetInUse = true;
        return d->defaultWidget;
    }

    connect(w, SIGNAL(destroyed(QObject*)),
            this, SLOT(_q_widgetDestroyed(QObject*)));
    d->createdWidgets.append(w);
    return w;
}

void QWidgetAction::releaseWidget(QWidget *widget)
{
    Q_D(QWidgetAction);

    if (widget == d->defaultWidget) {
        d->defaultWidget->hide();
        d->defaultWidget->setParent(0);
        d->defaultWidgetInUse = false;
        return;
    }

    if (!d->createdWidgets.contains(widget))
        return;

    disconnect(widget, SIGNAL(destroyed(QObject*)),
               this, SLOT(_q_widgetDestroyed(QObject*)));
    d->createdWidgets.removeAll(widget);
    deleteWidget(widget);
}

bool QWidgetAction::event(QEvent *event)
{
    Q_D(QWidgetAction);
    if (event->type() == QEvent::ActionChanged) {
        if (d->defaultWidget)
            d->defaultWidget->setEnabled(isEnabled());
        for (int i = 0; i < d->createdWidgets.count(); ++i)
            d->createdWidgets.at(i)->setEnabled(isEnabled());
    }
    return QAction::event(event);
}

bool QWidgetAction::eventFilter(QObject *obj, QEvent *event)
{
    return QAction::eventFilter(obj,event);
}

QWidget *QWidgetAction::createWidget(QWidget *parent)
{
    Q_UNUSED(parent)
    return 0;
}

void QWidgetAction::deleteWidget(QWidget *widget)
{
    widget->hide();
    widget->deleteLater();
}

QList<QWidget *> QWidgetAction::createdWidgets() const
{
    Q_D(const QWidgetAction);
    return d->createdWidgets;
}

QT_END_NAMESPACE

#include "moc_qwidgetaction.cpp"

#endif // QT_NO_ACTION