qqmlfileselector.cpp

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// Copyright (C) 2016 BlackBerry Limited. All rights reserved.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#include <QtCore/QFileSelector>
#include <QtQml/QQmlAbstractUrlInterceptor>
#include <QtQml/private/qqmlengine_p.h>
#include <QtQml/private/qqmlapplicationengine_p.h>
#include <qobjectdefs.h>
#include "qqmlfileselector.h"
#include "qqmlfileselector_p.h"
#include "qqmlengine_p.h"
#include <QDebug>
 
QT_BEGIN_NAMESPACE
 
QQmlFileSelector::QQmlFileSelector(QQmlEngine* engine, QObject* parent)
    : QObject(*(new QQmlFileSelectorPrivate), parent)
{
    Q_D(QQmlFileSelector);
    d->engine = engine;
    d->engine->addUrlInterceptor(d->myInstance.data());
}
 
QQmlFileSelector::~QQmlFileSelector()
{
    Q_D(QQmlFileSelector);
    if (d->engine) {
        d->engine->removeUrlInterceptor(d->myInstance.data());
        d->engine = nullptr;
    }
}
 
QFileSelector *QQmlFileSelector::selector() const noexcept
{
    Q_D(const QQmlFileSelector);
    return d->selector;
}
 
QQmlFileSelectorPrivate::QQmlFileSelectorPrivate()
{
    Q_Q(QQmlFileSelector);
    ownSelector = true;
    selector = new QFileSelector(q);
    myInstance.reset(new QQmlFileSelectorInterceptor(this));
}
 
QQmlFileSelectorPrivate::~QQmlFileSelectorPrivate()
{
    if (ownSelector)
        delete selector;
}
 
void QQmlFileSelector::setSelector(QFileSelector *selector)
{
    Q_D(QQmlFileSelector);
    if (selector) {
        if (d->ownSelector) {
            delete d->selector;
            d->ownSelector = false;
        }
        d->selector = selector;
    } else {
        if (!d->ownSelector) {
            d->ownSelector = true;
            d->selector = new QFileSelector(this);
        } // Do nothing if already using internal selector
    }
}
 
void QQmlFileSelector::setExtraSelectors(const QStringList &strings)
{
    Q_D(QQmlFileSelector);
    d->selector->setExtraSelectors(strings);
}
 
#if QT_DEPRECATED_SINCE(6, 0)
QQmlFileSelector* QQmlFileSelector::get(QQmlEngine* engine)
{
    QQmlEnginePrivate *enginePrivate = QQmlEnginePrivate::get(engine);
 
    if (qobject_cast<QQmlApplicationEngine *>(engine)) {
        auto *appEnginePrivate = static_cast<QQmlApplicationEnginePrivate *>(enginePrivate);
        appEnginePrivate->ensureInitialized();
    }
 
    const QUrl nonEmptyInvalid(QLatin1String(":"));
    for (QQmlAbstractUrlInterceptor *interceptor : enginePrivate->urlInterceptors) {
        const QUrl result = interceptor->intercept(
                    nonEmptyInvalid, QQmlAbstractUrlInterceptor::UrlString);
        if (result.scheme() == QLatin1String("type")
                && result.path() == QLatin1String("fileselector")) {
            return static_cast<QQmlFileSelectorInterceptor *>(interceptor)->d->q_func();
        }
    }
    return nullptr;
}
#endif
 
QQmlFileSelectorInterceptor::QQmlFileSelectorInterceptor(QQmlFileSelectorPrivate* pd)
    : d(pd)
{
}
 
QUrl QQmlFileSelectorInterceptor::intercept(const QUrl &path, DataType type)
{
    if (!path.isEmpty() && !path.isValid())
        return QUrl(QLatin1String("type:fileselector"));
 
    return type == QQmlAbstractUrlInterceptor::QmldirFile
            ? path // Don't intercept qmldir files, to prevent double interception
            : d->selector->select(path);
}
 
QT_END_NAMESPACE
 
#include "moc_qqmlfileselector.cpp"