Add QUrl based static methods to QFileDialog

With QUrl variants of the static methods, it is possible to get to use
VFS facilities of the platform if available.

Since we can't predict if the application will use the VFS available in
the platform or its own mechanisms, an extra parameter is provided to
restrict the protocols allowed to the user. This extra parameter
defaults to no restriction, which is the most convenient if the platform
file dialog and the application use a matching VFS. It's likely to be
the most common use.

Change-Id: I4c9effde9d194d226cd8b7a140eb9036187ba87b
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>

1 files changed, 70 insertions, 0 deletions

diff --git a/tests/manual/dialogs/filedialogpanel.cpp b/tests/manual/dialogs/filedialogpanel.cpp
index 636e65b684..b524e3d669 100644
--- a/tests/manual/dialogs/filedialogpanel.cpp
+++ b/tests/manual/dialogs/filedialogpanel.cpp
@@ -157,6 +157,7 @@ FileDialogPanel::FileDialogPanel(QWidget *parent)
     , m_acceptMode(createCombo(this, acceptModeComboData, sizeof(acceptModeComboData)/sizeof(ComboData)))
     , m_fileMode(createCombo(this, fileModeComboData, sizeof(fileModeComboData)/sizeof(ComboData)))
     , m_viewMode(createCombo(this, viewModeComboData, sizeof(viewModeComboData)/sizeof(ComboData)))
+    , m_allowedSchemes(new QLineEdit(this))
     , m_defaultSuffix(new QLineEdit(this))
     , m_directory(new QLineEdit(this))
     , m_selectedFileName(new QLineEdit(this))
@@ -171,6 +172,7 @@ FileDialogPanel::FileDialogPanel(QWidget *parent)
     optionsLayout->addRow(tr("AcceptMode:"), m_acceptMode);
     optionsLayout->addRow(tr("FileMode:"), m_fileMode);
     optionsLayout->addRow(tr("ViewMode:"), m_viewMode);
+    optionsLayout->addRow(tr("Allowed Schemes:"), m_allowedSchemes);
     optionsLayout->addRow(m_native);
     optionsLayout->addRow(m_confirmOverWrite);
     optionsLayout->addRow(m_nameFilterDetailsVisible);
@@ -216,9 +218,13 @@ FileDialogPanel::FileDialogPanel(QWidget *parent)
     row = 0;
     column++;
     addButton(tr("getOpenFileName"), buttonLayout, row, column, this, SLOT(getOpenFileName()));
+    addButton(tr("getOpenFileUrl"), buttonLayout, row, column, this, SLOT(getOpenFileUrl()));
     addButton(tr("getOpenFileNames"), buttonLayout, row, column, this, SLOT(getOpenFileNames()));
+    addButton(tr("getOpenFileUrls"), buttonLayout, row, column, this, SLOT(getOpenFileUrls()));
     addButton(tr("getSaveFileName"), buttonLayout, row, column, this, SLOT(getSaveFileName()));
+    addButton(tr("getSaveFileUrl"), buttonLayout, row, column, this, SLOT(getSaveFileUrl()));
     addButton(tr("getExistingDirectory"), buttonLayout, row, column, this, SLOT(getExistingDirectory()));
+    addButton(tr("getExistingDirectoryUrl"), buttonLayout, row, column, this, SLOT(getExistingDirectoryUrl()));
     addButton(tr("Restore defaults"), buttonLayout, row, column, this, SLOT(restoreDefaults()));
 
     // Main layout
@@ -319,6 +325,11 @@ QFileDialog::Options FileDialogPanel::options() const
     return result;
 }
 
+QStringList FileDialogPanel::allowedSchemes() const
+{
+    return m_allowedSchemes->text().simplified().split(' ', QString::SkipEmptyParts);
+}
+
 void FileDialogPanel::getOpenFileNames()
 {
     QString selectedFilter = m_selectedNameFilter->text().trimmed();
@@ -334,6 +345,22 @@ void FileDialogPanel::getOpenFileNames()
     }
 }
 
+void FileDialogPanel::getOpenFileUrls()
+{
+    QString selectedFilter = m_selectedNameFilter->text().trimmed();
+    const QList<QUrl> files =
+        QFileDialog::getOpenFileUrls(this, tr("getOpenFileNames Qt %1").arg(QLatin1String(QT_VERSION_STR)),
+                                      QUrl(m_directory->text()), filterString(), &selectedFilter, options(),
+                                      allowedSchemes());
+    if (!files.isEmpty()) {
+        QString result;
+        QDebug(&result).nospace()
+            << "Files: " << QUrl::toStringList(files)
+            << "\nName filter: " << selectedFilter;
+        QMessageBox::information(this, tr("getOpenFileNames"), result, QMessageBox::Ok);
+    }
+}
+
 void FileDialogPanel::getOpenFileName()
 {
     QString selectedFilter = m_selectedNameFilter->text().trimmed();
@@ -349,6 +376,22 @@ void FileDialogPanel::getOpenFileName()
     }
 }
 
+void FileDialogPanel::getOpenFileUrl()
+{
+    QString selectedFilter = m_selectedNameFilter->text().trimmed();
+    const QUrl file =
+        QFileDialog::getOpenFileUrl(this, tr("getOpenFileUrl Qt %1").arg(QLatin1String(QT_VERSION_STR)),
+                                      QUrl(m_directory->text()), filterString(), &selectedFilter, options(),
+                                      allowedSchemes());
+    if (file.isValid()) {
+        QString result;
+        QDebug(&result).nospace()
+            << "File: " << file.toString()
+            << "\nName filter: " << selectedFilter;
+        QMessageBox::information(this, tr("getOpenFileName"), result, QMessageBox::Ok);
+    }
+}
+
 void FileDialogPanel::getSaveFileName()
 {
     QString selectedFilter = m_selectedNameFilter->text().trimmed();
@@ -364,6 +407,22 @@ void FileDialogPanel::getSaveFileName()
     }
 }
 
+void FileDialogPanel::getSaveFileUrl()
+{
+    QString selectedFilter = m_selectedNameFilter->text().trimmed();
+    const QUrl file =
+        QFileDialog::getSaveFileUrl(this, tr("getSaveFileName Qt %1").arg(QLatin1String(QT_VERSION_STR)),
+                                    QUrl(m_directory->text()), filterString(), &selectedFilter, options(),
+                                    allowedSchemes());
+    if (file.isValid()) {
+        QString result;
+        QDebug(&result).nospace()
+            << "File: " << file.toString()
+            << "\nName filter: " << selectedFilter;
+        QMessageBox::information(this, tr("getSaveFileNames"), result, QMessageBox::Ok);
+    }
+}
+
 void FileDialogPanel::getExistingDirectory()
 {
     const QString dir =
@@ -373,12 +432,23 @@ void FileDialogPanel::getExistingDirectory()
         QMessageBox::information(this, tr("getExistingDirectory"), QLatin1String("Directory: ") + dir, QMessageBox::Ok);
 }
 
+void FileDialogPanel::getExistingDirectoryUrl()
+{
+    const QUrl dir =
+        QFileDialog::getExistingDirectoryUrl(this, tr("getExistingDirectory Qt %1").arg(QLatin1String(QT_VERSION_STR)),
+                                          QUrl(m_directory->text()), options() | QFileDialog::ShowDirsOnly,
+                                          allowedSchemes());
+    if (!dir.isEmpty())
+        QMessageBox::information(this, tr("getExistingDirectory"), QLatin1String("Directory: ") + dir.toString(), QMessageBox::Ok);
+}
+
 void FileDialogPanel::restoreDefaults()
 {
     QFileDialog d;
     setComboBoxValue(m_acceptMode, d.acceptMode());
     setComboBoxValue(m_fileMode, d.fileMode());
     setComboBoxValue(m_viewMode, d.viewMode());
+    m_allowedSchemes->setText(QString());
     m_confirmOverWrite->setChecked(d.confirmOverwrite());
     m_nameFilterDetailsVisible->setChecked(d.isNameFilterDetailsVisible());
     m_resolveSymLinks->setChecked(d.resolveSymlinks());