1// Copyright (C) 2021 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#include "qquickplatformfiledialog_p.h"
5
6#include <QtCore/qloggingcategory.h>
7#include <QtGui/qwindow.h>
8#include <QtQml/qqmlcontext.h>
9#include <QtQml/qqmlinfo.h>
10#include <QtQuick/qquickwindow.h>
11#include <QtQuickDialogs2Utils/private/qquickfilenamefilter_p.h>
12#include <QtQuickTemplates2/private/qquickdialog_p.h>
13#include <QtQuickTemplates2/private/qquickpopup_p_p.h>
14#include <QtQuickTemplates2/private/qquickpopupanchors_p.h>
15
16#include "qquickfiledialogimpl_p.h"
17
18QT_BEGIN_NAMESPACE
19
20Q_LOGGING_CATEGORY(lcQuickPlatformFileDialog, "qt.quick.dialogs.quickplatformfiledialog")
21
22/*!
23 \class QQuickPlatformFileDialog
24 \internal
25
26 An interface that QQuickFileDialog can use to access the non-native Qt Quick FileDialog.
27
28 Both this and the native implementations are created in QQuickAbstractDialog::create().
29*/
30QQuickPlatformFileDialog::QQuickPlatformFileDialog(QObject *parent)
31{
32 qCDebug(lcQuickPlatformFileDialog) << "creating non-native Qt Quick FileDialog with parent" << parent;
33
34 // Set a parent so that we get deleted if we can't be shown for whatever reason.
35 // Our eventual parent should be the window, though.
36 setParent(parent);
37
38 auto qmlContext = ::qmlContext(parent);
39 if (!qmlContext) {
40 qmlWarning(me: parent) << "No QQmlContext for QQuickPlatformFileDialog; can't create non-native FileDialog implementation";
41 return;
42 }
43
44 const auto dialogQmlUrl = QUrl(QStringLiteral("qrc:/qt-project.org/imports/QtQuick/Dialogs/quickimpl/qml/FileDialog.qml"));
45 QQmlComponent fileDialogComponent(qmlContext->engine(), dialogQmlUrl, parent);
46 if (!fileDialogComponent.isReady()) {
47 qmlWarning(me: parent) << "Failed to load non-native FileDialog implementation:\n" << fileDialogComponent.errorString();
48 return;
49 }
50 m_dialog = qobject_cast<QQuickFileDialogImpl*>(object: fileDialogComponent.create());
51 if (!m_dialog) {
52 qmlWarning(me: parent) << "Failed to create an instance of the non-native FileDialog:\n" << fileDialogComponent.errorString();
53 return;
54 }
55 // Give it a parent until it's parented to the window in show().
56 m_dialog->setParent(this);
57
58 connect(sender: m_dialog, signal: &QQuickDialog::accepted, context: this, slot: &QPlatformDialogHelper::accept);
59 connect(sender: m_dialog, signal: &QQuickDialog::rejected, context: this, slot: &QPlatformDialogHelper::reject);
60
61 connect(sender: m_dialog, signal: &QQuickFileDialogImpl::fileSelected, context: this, slot: &QQuickPlatformFileDialog::fileSelected);
62 // TODO: add support for multiple file selection (QTBUG-92585)
63// connect(m_dialog, &QQuickFileDialogImpl::filesSelected, [this](const QList<QString> &files) {
64// QList<QUrl> urls;
65// urls.reserve(files.count());
66// for (const QString &file : files)
67// urls += QUrl::fromLocalFile(file);
68// emit filesSelected(urls);
69// });
70 connect(sender: m_dialog, signal: &QQuickFileDialogImpl::selectedFileChanged, context: this, slot: &QQuickPlatformFileDialog::currentChanged);
71 connect(sender: m_dialog, signal: &QQuickFileDialogImpl::currentFolderChanged, context: this, slot: &QQuickPlatformFileDialog::directoryEntered);
72 connect(sender: m_dialog, signal: &QQuickFileDialogImpl::filterSelected, context: this, slot: &QQuickPlatformFileDialog::filterSelected);
73}
74
75bool QQuickPlatformFileDialog::isValid() const
76{
77 return m_dialog;
78}
79
80bool QQuickPlatformFileDialog::defaultNameFilterDisables() const
81{
82 return false;
83}
84
85void QQuickPlatformFileDialog::setDirectory(const QUrl &directory)
86{
87 if (!m_dialog)
88 return;
89
90 m_dialog->setCurrentFolder(currentFolder: directory);
91}
92
93QUrl QQuickPlatformFileDialog::directory() const
94{
95 if (!m_dialog)
96 return {};
97
98 return m_dialog->currentFolder();
99}
100
101void QQuickPlatformFileDialog::selectFile(const QUrl &file)
102{
103 if (!m_dialog)
104 return;
105
106 if (m_dialog->isVisible()) {
107 qWarning() << "Cannot set an initial selectedFile while FileDialog is open";
108 return;
109 }
110
111 // Since we're only called once each time the FileDialog is shown,
112 // we call setInitialCurrentFolderAndSelectedFile here, which will ensure that
113 // the first currentIndex change (to 0, as a result of the ListView's model changing
114 // as a result of the FolderListModel directory change) is effectively
115 // ignored and the correct index for the initial selectedFile is maintained.
116 m_dialog->setInitialCurrentFolderAndSelectedFile(file);
117}
118
119// TODO: support for multiple selected files
120QList<QUrl> QQuickPlatformFileDialog::selectedFiles() const
121{
122 if (m_dialog->selectedFile().isEmpty())
123 return {};
124
125 return { m_dialog->selectedFile() };
126}
127
128void QQuickPlatformFileDialog::setFilter()
129{
130}
131
132void QQuickPlatformFileDialog::selectNameFilter(const QString &filter)
133{
134 // There is a bit of a problem with order here - QQuickFileDialog::onShow()
135 // is called before our show(), but it needs to set the selected filter
136 // (which we can't do in our show() because we don't know about QQuickFileDialog).
137 // So, delay setting the filter until we're shown. This shouldn't be an issue
138 // in practice, since it doesn't make sense for the filter to programmatically
139 // change while the dialog is visible.
140 m_pendingNameFilter = filter;
141}
142
143QString QQuickPlatformFileDialog::selectedNameFilter() const
144{
145 return m_dialog->selectedNameFilter()->name();
146}
147
148void QQuickPlatformFileDialog::exec()
149{
150 qCWarning(lcQuickPlatformFileDialog) << "exec() is not supported for the Qt Quick FileDialog fallback";
151}
152
153/*!
154 \internal
155
156 This is called after QQuickFileDialog::onShow().
157 Both are called in QQuickAbstractDialog::open().
158*/
159bool QQuickPlatformFileDialog::show(Qt::WindowFlags flags, Qt::WindowModality modality, QWindow *parent)
160{
161 qCDebug(lcQuickPlatformFileDialog) << "show called with flags" << flags <<
162 "modality" << modality << "parent" << parent;
163 if (!m_dialog)
164 return false;
165
166 if (!parent)
167 return false;
168
169 auto quickWindow = qobject_cast<QQuickWindow*>(object: parent);
170 if (!quickWindow) {
171 qmlInfo(me: this->parent()) << "Parent window (" << parent << ") of non-native dialog is not a QQuickWindow";
172 return false;
173 }
174 m_dialog->setParent(parent);
175 m_dialog->resetParentItem();
176
177 auto popupPrivate = QQuickPopupPrivate::get(popup: m_dialog);
178 popupPrivate->getAnchors()->setCenterIn(m_dialog->parentItem());
179
180 QSharedPointer<QFileDialogOptions> options = QPlatformFileDialogHelper::options();
181 m_dialog->setTitle(options->windowTitle());
182 m_dialog->setOptions(options);
183 m_dialog->selectNameFilter(filter: m_pendingNameFilter);
184 m_pendingNameFilter.clear();
185 m_dialog->setAcceptLabel(options->isLabelExplicitlySet(label: QFileDialogOptions::Accept)
186 ? options->labelText(label: QFileDialogOptions::Accept) : QString());
187 m_dialog->setRejectLabel(options->isLabelExplicitlySet(label: QFileDialogOptions::Reject)
188 ? options->labelText(label: QFileDialogOptions::Reject) : QString());
189
190 if (options->initiallySelectedFiles().isEmpty()) {
191 if (m_dialog->currentFolder().isEmpty()) {
192 // The user didn't set an initial selectedFile nor currentFolder, so we'll set it to the working directory.
193 qCDebug(lcQuickPlatformFileDialog) << "- calling setCurrentFolder(QDir()) on quick dialog" << parent;
194 m_dialog->setCurrentFolder(currentFolder: QUrl::fromLocalFile(localfile: QDir().absolutePath()));
195 }
196 }
197
198 m_dialog->open();
199 return true;
200}
201
202void QQuickPlatformFileDialog::hide()
203{
204 if (!m_dialog)
205 return;
206
207 m_dialog->close();
208}
209
210QQuickFileDialogImpl *QQuickPlatformFileDialog::dialog() const
211{
212 return m_dialog;
213}
214
215QT_END_NAMESPACE
216
217#include "moc_qquickplatformfiledialog_p.cpp"
218

source code of qtdeclarative/src/quickdialogs/quickdialogsquickimpl/qquickplatformfiledialog.cpp