qquickpopupitem.cpp

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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
// Qt-Security score:significant reason:default
 
#include "qquickpopupitem_p_p.h"
#include "qquickapplicationwindow_p.h"
#include "qquickpage_p_p.h"
#include "qquickcontentitem_p.h"
#include "qquickpopup_p_p.h"
#include "qquickdeferredexecute_p_p.h"
 
#include <QtQuick/private/qquickattachedpropertypropagator_p.h>
 
#if QT_CONFIG(accessibility)
#include <QtQuick/private/qquickaccessibleattached_p.h>
#endif
 
QT_BEGIN_NAMESPACE
 
Q_STATIC_LOGGING_CATEGORY(lcPopupItem, "qt.quick.controls.popupitem")
 
QQuickPopupItemPrivate::QQuickPopupItemPrivate(QQuickPopup *popup)
    : popup(popup)
{
    isTabFence = true;
}
 
QQuickPopupItemPrivate *QQuickPopupItemPrivate::get(QQuickPopupItem *popupItem)
{
    return popupItem->d_func();
}
 
void QQuickPopupItemPrivate::implicitWidthChanged()
{
    qCDebug(lcPopupItem).nospace() << "implicitWidthChanged called on " << q_func() << "; new implicitWidth is " << implicitWidth;
    QQuickPagePrivate::implicitWidthChanged();
    emit popup->implicitWidthChanged();
}
 
void QQuickPopupItemPrivate::implicitHeightChanged()
{
    qCDebug(lcPopupItem).nospace() << "implicitHeightChanged called on " << q_func() << "; new implicitHeight is " << implicitHeight;
    QQuickPagePrivate::implicitHeightChanged();
    emit popup->implicitHeightChanged();
}
 
void QQuickPopupItemPrivate::resolveFont()
{
    if (QQuickApplicationWindow *window = qobject_cast<QQuickApplicationWindow *>(popup->window()))
        inheritFont(window->font());
    else
        inheritFont(QQuickTheme::font(QQuickTheme::System));
}
 
QQuickItem *QQuickPopupItemPrivate::getContentItem()
{
    Q_Q(QQuickPopupItem);
    if (QQuickItem *item = QQuickPagePrivate::getContentItem())
        return item;
 
    return new QQuickContentItem(popup, q);
}
 
static inline QString contentItemName() { return QStringLiteral("contentItem"); }
 
void QQuickPopupItemPrivate::cancelContentItem()
{
    quickCancelDeferred(popup, contentItemName());
}
 
void QQuickPopupItemPrivate::executeContentItem(bool complete)
{
    if (contentItem.wasExecuted())
        return;
 
    if (!contentItem || complete)
        quickBeginDeferred(popup, contentItemName(), contentItem);
    if (complete)
        quickCompleteDeferred(popup, contentItemName(), contentItem);
}
 
void QQuickPopupItemPrivate::cancelBackground()
{
    quickCancelDeferred(popup, backgroundName());
}
 
void QQuickPopupItemPrivate::executeBackground(bool complete)
{
    if (background.wasExecuted())
        return;
 
    if (!background || complete)
        quickBeginDeferred(popup, backgroundName(), background);
    if (complete)
        quickCompleteDeferred(popup, backgroundName(), background);
}
 
QQuickPopupItem::QQuickPopupItem(QQuickPopup *popup)
    : QQuickPage(*(new QQuickPopupItemPrivate(popup)), nullptr)
{
    setParent(popup);
    setFlag(ItemIsFocusScope);
    setAcceptedMouseButtons(Qt::AllButtons);
#if QT_CONFIG(quicktemplates2_multitouch)
    setAcceptTouchEvents(true);
#endif
#if QT_CONFIG(cursor)
    setCursor(Qt::ArrowCursor);
#endif
 
    connect(popup, &QQuickPopup::paletteChanged, this, &QQuickItem::paletteChanged);
    connect(popup, &QQuickPopup::paletteCreated, this, &QQuickItem::paletteCreated);
 
#if QT_CONFIG(quicktemplates2_hover)
    // TODO: switch to QStyleHints::useHoverEffects in Qt 5.8
    setHoverEnabled(true);
    // setAcceptHoverEvents(QGuiApplication::styleHints()->useHoverEffects());
    // connect(QGuiApplication::styleHints(), &QStyleHints::useHoverEffectsChanged, this, &QQuickItem::setAcceptHoverEvents);
#endif
}
 
QQuickPalette *QQuickPopupItemPrivate::palette() const
{
    return QQuickPopupPrivate::get(popup)->palette();
}
 
void QQuickPopupItemPrivate::setPalette(QQuickPalette *p)
{
    QQuickPopupPrivate::get(popup)->setPalette(p);
}
 
void QQuickPopupItemPrivate::resetPalette()
{
    QQuickPopupPrivate::get(popup)->resetPalette();
}
 
QPalette QQuickPopupItemPrivate::defaultPalette() const
{
    return QQuickPopupPrivate::get(popup)->defaultPalette();
}
 
bool QQuickPopupItemPrivate::providesPalette() const
{
    return QQuickPopupPrivate::get(popup)->providesPalette();
}
 
QPalette QQuickPopupItemPrivate::parentPalette(const QPalette &fallbackPalette) const
{
    return QQuickPopupPrivate::get(popup)->parentPalette(fallbackPalette);
}
 
/*!
    \internal
 
    This function is called as part of
    QQuickAttachedPropertyPropagatorPrivate::findAttachedParent's parent item
    lookup loop. E.g. if a Label in a Popup has an attached object, the lookup
    will check the parent item of Label, which is a QQuickPopupItem. If the
    Popup itself has an attached object, findAttachedParent will call
    QQuickPopup::attachedParent since it's a
    QQuickAttachedPropertyPropagatorTarget.
 
    The reason we need this override:
 
    In the Material ComboBox.qml, we have code like this:
 
    \code
    popup: T.Popup {
        // ...
        Material.theme: control.Material.theme
        // ...
 
        background: Rectangle {
            //...
            color: parent.Material.dialogColor
    \endcode
 
    The Material attached object has to be accessed this way due to
    deferred execution limitations (see 3e87695fb4b1a5d503c744046e6d9f43a2ae18a6).
    However, since parent here refers to QQuickPopupItem and not the popup,
    the color will actually come from the window. If a dark theme was set on
    the ComboBox, it will not be respected in the background if we don't
    override this function.
*/
QtPrivate::QQuickAttachedPropertyPropagator *QQuickPopupItemPrivate::attachedPropertyPropagator_parent(
    const QMetaObject *attachedType)
{
    qCDebug(lcAttachedPropertyPropagator).noquote() << "- attachee is a popup item" << q_func()
        << "- checking if it has an attached object";
    QtPrivate::QQuickAttachedPropertyPropagator *popupAttached
        = QtPrivate::QQuickAttachedPropertyPropagator::attachedObject(attachedType, popup);
    if (popupAttached) {
        qCDebug(lcAttachedPropertyPropagator).noquote() << "- popup item has attached object"
            << popupAttached << "- returning";
        return popupAttached;
    }
 
    qCDebug(lcAttachedPropertyPropagator).noquote() << "- popup item does not have attached object";
    // From here, findAttachedParent will check our parent item, which is the overlay,
    // and then the overlay's window.
    return nullptr;
}
 
void QQuickPopupItem::updatePolish()
{
    Q_D(QQuickPopupItem);
    return QQuickPopupPrivate::get(d->popup)->reposition();
}
 
bool QQuickPopupItem::childMouseEventFilter(QQuickItem *child, QEvent *event)
{
    Q_D(QQuickPopupItem);
    return d->popup->childMouseEventFilter(child, event);
}
 
void QQuickPopupItem::focusInEvent(QFocusEvent *event)
{
    Q_D(QQuickPopupItem);
    d->popup->focusInEvent(event);
}
 
void QQuickPopupItem::focusOutEvent(QFocusEvent *event)
{
    Q_D(QQuickPopupItem);
    d->popup->focusOutEvent(event);
}
 
void QQuickPopupItem::keyPressEvent(QKeyEvent *event)
{
    Q_D(QQuickPopupItem);
    d->popup->keyPressEvent(event);
}
 
void QQuickPopupItem::keyReleaseEvent(QKeyEvent *event)
{
    Q_D(QQuickPopupItem);
    d->popup->keyReleaseEvent(event);
}
 
void QQuickPopupItem::mousePressEvent(QMouseEvent *event)
{
    Q_D(QQuickPopupItem);
    d->popup->mousePressEvent(event);
}
 
void QQuickPopupItem::mouseMoveEvent(QMouseEvent *event)
{
    Q_D(QQuickPopupItem);
    d->popup->mouseMoveEvent(event);
}
 
void QQuickPopupItem::mouseReleaseEvent(QMouseEvent *event)
{
    Q_D(QQuickPopupItem);
    d->popup->mouseReleaseEvent(event);
}
 
void QQuickPopupItem::mouseDoubleClickEvent(QMouseEvent *event)
{
    Q_D(QQuickPopupItem);
    d->popup->mouseDoubleClickEvent(event);
}
 
void QQuickPopupItem::mouseUngrabEvent()
{
    Q_D(QQuickPopupItem);
    d->popup->mouseUngrabEvent();
}
 
#if QT_CONFIG(quicktemplates2_multitouch)
void QQuickPopupItem::touchEvent(QTouchEvent *event)
{
    Q_D(QQuickPopupItem);
    d->popup->touchEvent(event);
}
 
void QQuickPopupItem::touchUngrabEvent()
{
    Q_D(QQuickPopupItem);
    d->popup->touchUngrabEvent();
}
#endif
 
#if QT_CONFIG(wheelevent)
void QQuickPopupItem::wheelEvent(QWheelEvent *event)
{
    Q_D(QQuickPopupItem);
    d->popup->wheelEvent(event);
}
#endif
 
void QQuickPopupItem::contentItemChange(QQuickItem *newItem, QQuickItem *oldItem)
{
    Q_D(QQuickPopupItem);
    QQuickPage::contentItemChange(newItem, oldItem);
    d->popup->contentItemChange(newItem, oldItem);
}
 
void QQuickPopupItem::contentSizeChange(const QSizeF &newSize, const QSizeF &oldSize)
{
    Q_D(QQuickPopupItem);
    qCDebug(lcPopupItem) << "contentSizeChange called on" << this << "newSize" << newSize << "oldSize" << oldSize;
    QQuickPage::contentSizeChange(newSize, oldSize);
    d->popup->contentSizeChange(newSize, oldSize);
}
 
void QQuickPopupItem::fontChange(const QFont &newFont, const QFont &oldFont)
{
    Q_D(QQuickPopupItem);
    QQuickPage::fontChange(newFont, oldFont);
    d->popup->fontChange(newFont, oldFont);
}
 
void QQuickPopupItem::geometryChange(const QRectF &newGeometry, const QRectF &oldGeometry)
{
    Q_D(QQuickPopupItem);
    qCDebug(lcPopupItem) << "geometryChange called on" << this << "newGeometry" << newGeometry << "oldGeometry" << oldGeometry;
    QQuickPage::geometryChange(newGeometry, oldGeometry);
    d->popup->geometryChange(newGeometry, oldGeometry);
}
 
void QQuickPopupItem::localeChange(const QLocale &newLocale, const QLocale &oldLocale)
{
    Q_D(QQuickPopupItem);
    QQuickPage::localeChange(newLocale, oldLocale);
    d->popup->localeChange(newLocale, oldLocale);
}
 
void QQuickPopupItem::mirrorChange()
{
    Q_D(QQuickPopupItem);
    emit d->popup->mirroredChanged();
}
 
void QQuickPopupItem::itemChange(ItemChange change, const ItemChangeData &data)
{
    Q_D(QQuickPopupItem);
    QQuickPage::itemChange(change, data);
    d->popup->itemChange(change, data);
}
 
void QQuickPopupItem::paddingChange(const QMarginsF &newPadding, const QMarginsF &oldPadding)
{
    Q_D(QQuickPopupItem);
    QQuickPage::paddingChange(newPadding, oldPadding);
    d->popup->paddingChange(newPadding, oldPadding);
}
 
void QQuickPopupItem::enabledChange()
{
    Q_D(QQuickPopupItem);
    // Just having QQuickPopup connect our QQuickItem::enabledChanged() signal
    // to its enabledChanged() signal is enough for the enabled property to work,
    // but we must also ensure that its paletteChanged() signal is emitted
    // so that bindings to palette are re-evaluated, because QQuickControl::palette()
    // returns a different palette depending on whether or not the control is enabled.
    // To save a connection, we also emit enabledChanged here.
    emit d->popup->enabledChanged();
}
 
QFont QQuickPopupItem::defaultFont() const
{
    Q_D(const QQuickPopupItem);
    return d->popup->defaultFont();
}
 
#if QT_CONFIG(accessibility)
QAccessible::Role QQuickPopupItem::accessibleRole() const
{
    Q_D(const QQuickPopupItem);
    return d->popup->effectiveAccessibleRole();
}
 
void QQuickPopupItem::accessibilityActiveChanged(bool active)
{
    Q_D(const QQuickPopupItem);
    // Can't just use d->popup->accessibleName() here, because that refers to the accessible
    // name of us, the popup item, which is not what we want.
    const QQuickAccessibleAttached *popupAccessibleAttached = QQuickControlPrivate::accessibleAttached(d->popup);
    const QString oldPopupName = popupAccessibleAttached ? popupAccessibleAttached->name() : QString();
    const bool wasNameExplicitlySetOnPopup = popupAccessibleAttached && popupAccessibleAttached->wasNameExplicitlySet();
 
    QQuickPage::accessibilityActiveChanged(active);
 
    QQuickAccessibleAttached *accessibleAttached = QQuickControlPrivate::accessibleAttached(this);
    const QString ourName = accessibleAttached ? accessibleAttached->name() : QString();
    if (wasNameExplicitlySetOnPopup && accessibleAttached && ourName != oldPopupName) {
        // The user set Accessible.name on the Popup. Since the Popup and its popup item
        // have different accessible attached properties, the popup item doesn't know that
        // a name was set on the Popup by the user, and that it should use that, rather than
        // whatever QQuickPage sets. That's why we need to do it here.
        // To avoid it being overridden by the call to accessibilityActiveChanged() below,
        // we set it explicitly. It's safe to do this as the popup item is an internal implementation detail.
        accessibleAttached->setName(oldPopupName);
    }
 
    // This allows the different popup types to set a name on their popup item accordingly.
    // For example: Dialog uses its title and ToolTip uses its text.
    d->popup->accessibilityActiveChanged(active);
}
#endif
 
QT_END_NAMESPACE
 
#include "moc_qquickpopupitem_p_p.cpp"