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 "qquickfolderdialogimpl_p.h"
5#include "qquickfolderdialogimpl_p_p.h"
6
7#include <QtCore/qloggingcategory.h>
8#include <QtQuickTemplates2/private/qquickdialogbuttonbox_p_p.h>
9
10#include "qquickfiledialogdelegate_p.h"
11#include "qquickfolderbreadcrumbbar_p.h"
12
13QT_BEGIN_NAMESPACE
14
15Q_LOGGING_CATEGORY(lcFolderDialogCurrentFolder, "qt.quick.dialogs.quickfolderdialogimpl.currentFolder")
16Q_LOGGING_CATEGORY(lcFolderDialogSelectedFolder, "qt.quick.dialogs.quickfolderdialogimpl.selectedFolder")
17Q_LOGGING_CATEGORY(lcFolderDialogOptions, "qt.quick.dialogs.quickfolderdialogimpl.options")
18
19QQuickFolderDialogImplPrivate::QQuickFolderDialogImplPrivate()
20{
21}
22
23void QQuickFolderDialogImplPrivate::updateEnabled()
24{
25 Q_Q(QQuickFolderDialogImpl);
26 if (!buttonBox)
27 return;
28
29 QQuickFolderDialogImplAttached *attached = attachedOrWarn();
30 if (!attached)
31 return;
32
33 auto openButton = buttonBox->standardButton(button: QPlatformDialogHelper::Open);
34 if (!openButton) {
35 qmlWarning(me: q).nospace() << "Can't update Open button's enabled state because it wasn't found";
36 return;
37 }
38
39 openButton->setEnabled(!selectedFolder.isEmpty() && attached->breadcrumbBar()
40 && !attached->breadcrumbBar()->textField()->isVisible());
41}
42
43/*!
44 \internal
45
46 Ensures that a folder is always selected after a change in \c currentFolder.
47
48 \a oldFolderPath is the previous value of \c currentFolder.
49*/
50void QQuickFolderDialogImplPrivate::updateSelectedFolder(const QString &oldFolderPath)
51{
52 Q_Q(QQuickFolderDialogImpl);
53 QQuickFolderDialogImplAttached *attached = attachedOrWarn();
54 if (!attached || !attached->folderDialogListView())
55 return;
56
57 QString newSelectedFolderPath;
58 int newSelectedFolderIndex = 0;
59 const QString newFolderPath = QQmlFile::urlToLocalFileOrQrc(currentFolder);
60 if (!oldFolderPath.isEmpty() && !newFolderPath.isEmpty()) {
61 // If the user went up a directory (or several), we should set
62 // selectedFolder to be the directory that we were in (or
63 // its closest ancestor that is a child of the new directory).
64 // E.g. if oldFolderPath is /foo/bar/baz/abc/xyz, and newFolderPath is /foo/bar,
65 // then we want to set selectedFolder to be /foo/bar/baz.
66 const int indexOfFolder = oldFolderPath.indexOf(s: newFolderPath);
67 if (indexOfFolder != -1) {
68 // [folder]
69 // [ oldFolderPath ]
70 // /foo/bar/baz/abc/xyz
71 // [rel...Paths]
72 QStringList relativePaths = oldFolderPath.mid(position: indexOfFolder + newFolderPath.size()).split(sep: QLatin1Char('/'), behavior: Qt::SkipEmptyParts);
73 newSelectedFolderPath = newFolderPath + QLatin1Char('/') + relativePaths.first();
74
75 // Now find the index of that directory so that we can set the ListView's currentIndex to it.
76 const QDir newFolderDir(newFolderPath);
77 // Just to be safe...
78 if (!newFolderDir.exists()) {
79 qmlWarning(me: q) << "Directory" << newSelectedFolderPath << "doesn't exist; can't get a file entry list for it";
80 return;
81 }
82
83 const QFileInfoList dirs = newFolderDir.entryInfoList(filters: QDir::Dirs | QDir::NoDotAndDotDot, sort: QDir::DirsFirst);
84 const QFileInfo newSelectedFileInfo(newSelectedFolderPath);
85 // The directory can contain files, but since we put dirs first, that should never affect the indices.
86 newSelectedFolderIndex = dirs.indexOf(t: newSelectedFileInfo);
87 }
88 }
89
90 if (newSelectedFolderPath.isEmpty()) {
91 // When entering into a directory that isn't a parent of the old one, the first
92 // file delegate should be selected.
93 // TODO: is there a cheaper way to do this? QDirIterator doesn't support sorting,
94 // so we can't use that. QQuickFolderListModel uses threads to fetch its data,
95 // so should be considered asynchronous. We might be able to use it, but it would
96 // complicate the code even more...
97 QDir newFolderDir(newFolderPath);
98 if (newFolderDir.exists()) {
99 const QFileInfoList files = newFolderDir.entryInfoList(filters: QDir::Dirs | QDir::NoDotAndDotDot, sort: QDir::DirsFirst);
100 if (!files.isEmpty())
101 newSelectedFolderPath = files.first().absoluteFilePath();
102 }
103 }
104
105 const bool folderSelected = !newSelectedFolderPath.isEmpty();
106 q->setSelectedFolder(folderSelected ? QUrl::fromLocalFile(localfile: newSelectedFolderPath) : QUrl());
107 {
108 // Set the appropriate currentIndex for the selected folder. We block signals from ListView
109 // because we don't want folderDialogListViewCurrentIndexChanged to be called, as the file
110 // it gets from the delegate will not be up-to-date (but most importantly because we already
111 // just set the selected folder).
112 QSignalBlocker blocker(attached->folderDialogListView());
113 attached->folderDialogListView()->setCurrentIndex(folderSelected ? newSelectedFolderIndex : -1);
114 }
115 if (folderSelected) {
116 if (QQuickItem *currentItem = attached->folderDialogListView()->currentItem())
117 currentItem->forceActiveFocus();
118 }
119}
120
121void QQuickFolderDialogImplPrivate::handleAccept()
122{
123 // Let handleClick take care of calling accept().
124}
125
126void QQuickFolderDialogImplPrivate::handleClick(QQuickAbstractButton *button)
127{
128 Q_Q(QQuickFolderDialogImpl);
129 if (buttonRole(button) == QPlatformDialogHelper::AcceptRole && selectedFolder.isValid()) {
130 q->setSelectedFolder(selectedFolder);
131 q->accept();
132 }
133}
134
135/*!
136 \class QQuickFolderDialogImpl
137 \internal
138
139 An interface that QQuickFolderDialog can use to access the non-native Qt Quick FolderDialog.
140
141 Both this and the native implementations are created in QQuickAbstractDialog::create().
142*/
143
144QQuickFolderDialogImpl::QQuickFolderDialogImpl(QObject *parent)
145 : QQuickDialog(*(new QQuickFolderDialogImplPrivate), parent)
146{
147 setPopupType(QQuickPopup::Window);
148}
149
150QQuickFolderDialogImplAttached *QQuickFolderDialogImpl::qmlAttachedProperties(QObject *object)
151{
152 return new QQuickFolderDialogImplAttached(object);
153}
154
155QUrl QQuickFolderDialogImpl::currentFolder() const
156{
157 Q_D(const QQuickFolderDialogImpl);
158 return d->currentFolder;
159}
160
161void QQuickFolderDialogImpl::setCurrentFolder(const QUrl &currentFolder)
162{
163 qCDebug(lcFolderDialogCurrentFolder) << "setCurrentFolder called with" << currentFolder;
164 Q_D(QQuickFolderDialogImpl);
165 if (currentFolder == d->currentFolder)
166 return;
167
168 const QString oldFolderPath = QQmlFile::urlToLocalFileOrQrc(d->currentFolder);
169
170 d->currentFolder = currentFolder;
171 d->updateSelectedFolder(oldFolderPath);
172 emit currentFolderChanged(folderUrl: d->currentFolder);
173}
174
175QUrl QQuickFolderDialogImpl::selectedFolder() const
176{
177 Q_D(const QQuickFolderDialogImpl);
178 return d->selectedFolder;
179}
180
181void QQuickFolderDialogImpl::setSelectedFolder(const QUrl &selectedFolder)
182{
183 Q_D(QQuickFolderDialogImpl);
184 qCDebug(lcFolderDialogSelectedFolder).nospace() << "setSelectedFolder called with selectedFolder "
185 << selectedFolder << " (d->selectedFolder is " << d->selectedFolder << ")";
186 if (selectedFolder == d->selectedFolder)
187 return;
188
189 d->selectedFolder = selectedFolder;
190 d->updateEnabled();
191 emit selectedFolderChanged(folderUrl: selectedFolder);
192}
193
194QSharedPointer<QFileDialogOptions> QQuickFolderDialogImpl::options() const
195{
196 Q_D(const QQuickFolderDialogImpl);
197 return d->options;
198}
199
200void QQuickFolderDialogImpl::setOptions(const QSharedPointer<QFileDialogOptions> &options)
201{
202 qCDebug(lcFolderDialogOptions).nospace() << "setOptions called with:"
203 << " acceptMode=" << options->acceptMode()
204 << " fileMode=" << options->fileMode()
205 << " initialDirectory=" << options->initialDirectory();
206
207 Q_D(QQuickFolderDialogImpl);
208 d->options = options;
209}
210
211/*!
212 \internal
213
214 These allow QQuickPlatformFileDialog::show() to set custom labels on the
215 dialog buttons without having to know about/go through QQuickFolderDialogImplAttached
216 and QQuickDialogButtonBox.
217*/
218void QQuickFolderDialogImpl::setAcceptLabel(const QString &label)
219{
220 Q_D(QQuickFolderDialogImpl);
221 d->acceptLabel = label;
222 QQuickFolderDialogImplAttached *attached = d->attachedOrWarn();
223 if (!attached)
224 return;
225
226 auto acceptButton = d->buttonBox->standardButton(button: QPlatformDialogHelper::Open);
227 if (!acceptButton) {
228 qmlWarning(me: this).nospace() << "Can't set accept label to " << label
229 << "; failed to find Open button in DialogButtonBox of " << this;
230 return;
231 }
232
233 acceptButton->setText(!label.isEmpty()
234 ? label : QQuickDialogButtonBoxPrivate::buttonText(standardButton: QPlatformDialogHelper::Open));
235}
236
237void QQuickFolderDialogImpl::setRejectLabel(const QString &label)
238{
239 Q_D(QQuickFolderDialogImpl);
240 d->rejectLabel = label;
241 if (!d->buttonBox)
242 return;
243
244 auto rejectButton = d->buttonBox->standardButton(button: QPlatformDialogHelper::Cancel);
245 if (!rejectButton) {
246 qmlWarning(me: this).nospace() << "Can't set reject label to " << label
247 << "; failed to find Open button in DialogButtonBox of " << this;
248 return;
249 }
250
251 rejectButton->setText(!label.isEmpty()
252 ? label : QQuickDialogButtonBoxPrivate::buttonText(standardButton: QPlatformDialogHelper::Cancel));
253}
254
255void QQuickFolderDialogImpl::componentComplete()
256{
257 Q_D(QQuickFolderDialogImpl);
258 QQuickDialog::componentComplete();
259
260 // Find the right-most button and set its key navigation so that
261 // tab moves focus to the breadcrumb bar's up button. I tried
262 // doing this via KeyNavigation on the DialogButtonBox in QML,
263 // but it didn't work (probably because it's not the right item).
264 QQuickFolderDialogImplAttached *attached = d->attachedOrWarn();
265 if (!attached)
266 return;
267
268 Q_ASSERT(d->buttonBox);
269 const int buttonCount = d->buttonBox->count();
270 if (buttonCount == 0)
271 return;
272
273 QQuickAbstractButton *rightMostButton = qobject_cast<QQuickAbstractButton *>(
274 object: d->buttonBox->itemAt(index: buttonCount - 1));
275 if (!rightMostButton) {
276 qmlWarning(me: this) << "Can't find right-most button in DialogButtonBox";
277 return;
278 }
279
280 auto keyNavigationAttached = QQuickKeyNavigationAttached::qmlAttachedProperties(rightMostButton);
281 if (!keyNavigationAttached) {
282 qmlWarning(me: this) << "Can't create attached KeyNavigation object on" << QDebug::toString(object: rightMostButton);
283 return;
284 }
285
286 keyNavigationAttached->setTab(attached->breadcrumbBar()->upButton());
287}
288
289void QQuickFolderDialogImpl::itemChange(QQuickItem::ItemChange change, const QQuickItem::ItemChangeData &data)
290{
291 Q_D(QQuickFolderDialogImpl);
292 QQuickDialog::itemChange(change, data);
293
294 if (change != QQuickItem::ItemVisibleHasChanged || !isComponentComplete() || !data.boolValue)
295 return;
296
297 QQuickFolderDialogImplAttached *attached = d->attachedOrWarn();
298 if (!attached)
299 return;
300
301 attached->folderDialogListView()->forceActiveFocus();
302 d->updateEnabled();
303}
304
305QQuickFolderDialogImplAttached *QQuickFolderDialogImplPrivate::attachedOrWarn()
306{
307 Q_Q(QQuickFolderDialogImpl);
308 QQuickFolderDialogImplAttached *attached = static_cast<QQuickFolderDialogImplAttached*>(
309 qmlAttachedPropertiesObject<QQuickFolderDialogImpl>(obj: q));
310 if (!attached)
311 qmlWarning(me: q) << "Expected FileDialogImpl attached object to be present on" << this;
312 return attached;
313}
314
315void QQuickFolderDialogImplAttachedPrivate::folderDialogListViewCurrentIndexChanged()
316{
317 auto folderDialogImpl = qobject_cast<QQuickFolderDialogImpl*>(object: parent);
318 if (!folderDialogImpl)
319 return;
320
321 auto folderDialogDelegate = qobject_cast<QQuickFileDialogDelegate*>(object: folderDialogListView->currentItem());
322 if (!folderDialogDelegate)
323 return;
324
325 folderDialogImpl->setSelectedFolder(folderDialogDelegate->file());
326}
327
328QQuickFolderDialogImplAttached::QQuickFolderDialogImplAttached(QObject *parent)
329 : QObject(*(new QQuickFolderDialogImplAttachedPrivate), parent)
330{
331 if (!qobject_cast<QQuickFolderDialogImpl*>(object: parent)) {
332 qmlWarning(me: this) << "FolderDialogImpl attached properties should only be "
333 << "accessed through the root FileDialogImpl instance";
334 }
335}
336
337QQuickListView *QQuickFolderDialogImplAttached::folderDialogListView() const
338{
339 Q_D(const QQuickFolderDialogImplAttached);
340 return d->folderDialogListView;
341}
342
343void QQuickFolderDialogImplAttached::setFolderDialogListView(QQuickListView *folderDialogListView)
344{
345 Q_D(QQuickFolderDialogImplAttached);
346 if (folderDialogListView == d->folderDialogListView)
347 return;
348
349 d->folderDialogListView = folderDialogListView;
350
351 QObjectPrivate::connect(sender: d->folderDialogListView, signal: &QQuickListView::currentIndexChanged,
352 receiverPrivate: d, slot: &QQuickFolderDialogImplAttachedPrivate::folderDialogListViewCurrentIndexChanged);
353
354 emit folderDialogListViewChanged();
355}
356
357QQuickFolderBreadcrumbBar *QQuickFolderDialogImplAttached::breadcrumbBar() const
358{
359 Q_D(const QQuickFolderDialogImplAttached);
360 return d->breadcrumbBar;
361}
362
363void QQuickFolderDialogImplAttached::setBreadcrumbBar(QQuickFolderBreadcrumbBar *breadcrumbBar)
364{
365 Q_D(QQuickFolderDialogImplAttached);
366 if (breadcrumbBar == d->breadcrumbBar)
367 return;
368
369 d->breadcrumbBar = breadcrumbBar;
370 emit breadcrumbBarChanged();
371}
372
373QT_END_NAMESPACE
374
375#include "moc_qquickfolderdialogimpl_p.cpp"
376

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