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Diffstat (limited to 'src/quickdialogs/quickdialogsquickimpl/qquickplatformfiledialog.cpp')
| -rw-r--r-- | src/quickdialogs/quickdialogsquickimpl/qquickplatformfiledialog.cpp | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/src/quickdialogs/quickdialogsquickimpl/qquickplatformfiledialog.cpp b/src/quickdialogs/quickdialogsquickimpl/qquickplatformfiledialog.cpp new file mode 100644 index 0000000000..1c9174a8e4 --- /dev/null +++ b/src/quickdialogs/quickdialogsquickimpl/qquickplatformfiledialog.cpp @@ -0,0 +1,217 @@ +// Copyright (C) 2021 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 + +#include "qquickplatformfiledialog_p.h" + +#include <QtCore/qloggingcategory.h> +#include <QtGui/qwindow.h> +#include <QtQml/qqmlcontext.h> +#include <QtQml/qqmlinfo.h> +#include <QtQuick/qquickwindow.h> +#include <QtQuickDialogs2Utils/private/qquickfilenamefilter_p.h> +#include <QtQuickTemplates2/private/qquickdialog_p.h> +#include <QtQuickTemplates2/private/qquickpopup_p_p.h> +#include <QtQuickTemplates2/private/qquickpopupanchors_p.h> + +#include "qquickfiledialogimpl_p.h" + +QT_BEGIN_NAMESPACE + +Q_LOGGING_CATEGORY(lcQuickPlatformFileDialog, "qt.quick.dialogs.quickplatformfiledialog") + +/*! + \class QQuickPlatformFileDialog + \internal + + An interface that QQuickFileDialog can use to access the non-native Qt Quick FileDialog. + + Both this and the native implementations are created in QQuickAbstractDialog::create(). +*/ +QQuickPlatformFileDialog::QQuickPlatformFileDialog(QObject *parent) +{ + qCDebug(lcQuickPlatformFileDialog) << "creating non-native Qt Quick FileDialog with parent" << parent; + + // Set a parent so that we get deleted if we can't be shown for whatever reason. + // Our eventual parent should be the window, though. + setParent(parent); + + auto qmlContext = ::qmlContext(parent); + if (!qmlContext) { + qmlWarning(parent) << "No QQmlContext for QQuickPlatformFileDialog; can't create non-native FileDialog implementation"; + return; + } + + const auto dialogQmlUrl = QUrl(QStringLiteral("qrc:/qt-project.org/imports/QtQuick/Dialogs/quickimpl/qml/FileDialog.qml")); + QQmlComponent fileDialogComponent(qmlContext->engine(), dialogQmlUrl, parent); + if (!fileDialogComponent.isReady()) { + qmlWarning(parent) << "Failed to load non-native FileDialog implementation:\n" << fileDialogComponent.errorString(); + return; + } + m_dialog = qobject_cast<QQuickFileDialogImpl*>(fileDialogComponent.create()); + if (!m_dialog) { + qmlWarning(parent) << "Failed to create an instance of the non-native FileDialog:\n" << fileDialogComponent.errorString(); + return; + } + // Give it a parent until it's parented to the window in show(). + m_dialog->setParent(this); + + connect(m_dialog, &QQuickDialog::accepted, this, &QPlatformDialogHelper::accept); + connect(m_dialog, &QQuickDialog::rejected, this, &QPlatformDialogHelper::reject); + + connect(m_dialog, &QQuickFileDialogImpl::fileSelected, this, &QQuickPlatformFileDialog::fileSelected); + // TODO: add support for multiple file selection (QTBUG-92585) +// connect(m_dialog, &QQuickFileDialogImpl::filesSelected, [this](const QList<QString> &files) { +// QList<QUrl> urls; +// urls.reserve(files.count()); +// for (const QString &file : files) +// urls += QUrl::fromLocalFile(file); +// emit filesSelected(urls); +// }); + connect(m_dialog, &QQuickFileDialogImpl::selectedFileChanged, this, &QQuickPlatformFileDialog::currentChanged); + connect(m_dialog, &QQuickFileDialogImpl::currentFolderChanged, this, &QQuickPlatformFileDialog::directoryEntered); + connect(m_dialog, &QQuickFileDialogImpl::filterSelected, this, &QQuickPlatformFileDialog::filterSelected); +} + +bool QQuickPlatformFileDialog::isValid() const +{ + return m_dialog; +} + +bool QQuickPlatformFileDialog::defaultNameFilterDisables() const +{ + return false; +} + +void QQuickPlatformFileDialog::setDirectory(const QUrl &directory) +{ + if (!m_dialog) + return; + + m_dialog->setCurrentFolder(directory); +} + +QUrl QQuickPlatformFileDialog::directory() const +{ + if (!m_dialog) + return {}; + + return m_dialog->currentFolder(); +} + +void QQuickPlatformFileDialog::selectFile(const QUrl &file) +{ + if (!m_dialog) + return; + + if (m_dialog->isVisible()) { + qWarning() << "Cannot set an initial selectedFile while FileDialog is open"; + return; + } + + // Since we're only called once each time the FileDialog is shown, + // we call setInitialCurrentFolderAndSelectedFile here, which will ensure that + // the first currentIndex change (to 0, as a result of the ListView's model changing + // as a result of the FolderListModel directory change) is effectively + // ignored and the correct index for the initial selectedFile is maintained. + m_dialog->setInitialCurrentFolderAndSelectedFile(file); +} + +// TODO: support for multiple selected files +QList<QUrl> QQuickPlatformFileDialog::selectedFiles() const +{ + if (m_dialog->selectedFile().isEmpty()) + return {}; + + return { m_dialog->selectedFile() }; +} + +void QQuickPlatformFileDialog::setFilter() +{ +} + +void QQuickPlatformFileDialog::selectNameFilter(const QString &filter) +{ + // There is a bit of a problem with order here - QQuickFileDialog::onShow() + // is called before our show(), but it needs to set the selected filter + // (which we can't do in our show() because we don't know about QQuickFileDialog). + // So, delay setting the filter until we're shown. This shouldn't be an issue + // in practice, since it doesn't make sense for the filter to programmatically + // change while the dialog is visible. + m_pendingNameFilter = filter; +} + +QString QQuickPlatformFileDialog::selectedNameFilter() const +{ + return m_dialog->selectedNameFilter()->name(); +} + +void QQuickPlatformFileDialog::exec() +{ + qCWarning(lcQuickPlatformFileDialog) << "exec() is not supported for the Qt Quick FileDialog fallback"; +} + +/*! + \internal + + This is called after QQuickFileDialog::onShow(). + Both are called in QQuickAbstractDialog::open(). +*/ +bool QQuickPlatformFileDialog::show(Qt::WindowFlags flags, Qt::WindowModality modality, QWindow *parent) +{ + qCDebug(lcQuickPlatformFileDialog) << "show called with flags" << flags << + "modality" << modality << "parent" << parent; + if (!m_dialog) + return false; + + if (!parent) + return false; + + auto quickWindow = qobject_cast<QQuickWindow*>(parent); + if (!quickWindow) { + qmlInfo(this->parent()) << "Parent window (" << parent << ") of non-native dialog is not a QQuickWindow"; + return false; + } + m_dialog->setParent(parent); + m_dialog->resetParentItem(); + + auto popupPrivate = QQuickPopupPrivate::get(m_dialog); + popupPrivate->getAnchors()->setCenterIn(m_dialog->parentItem()); + + QSharedPointer<QFileDialogOptions> options = QPlatformFileDialogHelper::options(); + m_dialog->setTitle(options->windowTitle()); + m_dialog->setOptions(options); + m_dialog->selectNameFilter(m_pendingNameFilter); + m_pendingNameFilter.clear(); + m_dialog->setAcceptLabel(options->isLabelExplicitlySet(QFileDialogOptions::Accept) + ? options->labelText(QFileDialogOptions::Accept) : QString()); + m_dialog->setRejectLabel(options->isLabelExplicitlySet(QFileDialogOptions::Reject) + ? options->labelText(QFileDialogOptions::Reject) : QString()); + + if (options->initiallySelectedFiles().isEmpty()) { + if (m_dialog->currentFolder().isEmpty()) { + // The user didn't set an initial selectedFile nor currentFolder, so we'll set it to the working directory. + qCDebug(lcQuickPlatformFileDialog) << "- calling setCurrentFolder(QDir()) on quick dialog" << parent; + m_dialog->setCurrentFolder(QUrl::fromLocalFile(QDir().absolutePath())); + } + } + + m_dialog->open(); + return true; +} + +void QQuickPlatformFileDialog::hide() +{ + if (!m_dialog) + return; + + m_dialog->close(); +} + +QQuickFileDialogImpl *QQuickPlatformFileDialog::dialog() const +{ + return m_dialog; +} + +QT_END_NAMESPACE + +#include "moc_qquickplatformfiledialog_p.cpp" |