Platform: add FileDialog and FolderDialog

Change-Id: I4328c273e48139d6ddd5a3d3c8492d06f48a5c24
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>

3 files changed, 238 insertions, 0 deletions

diff --git a/src/imports/platform/widgets/qwidgetplatformfiledialog.cpp b/src/imports/platform/widgets/qwidgetplatformfiledialog.cpp
new file mode 100644
index 00000000..22e9c78a
--- /dev/null
+++ b/src/imports/platform/widgets/qwidgetplatformfiledialog.cpp
@@ -0,0 +1,152 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Labs Platform module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qwidgetplatformfiledialog_p.h"
+#include "qwidgetplatformdialog_p.h"
+#include "qwidgetplatform_p.h"
+
+#include <QtWidgets/qfiledialog.h>
+
+QT_BEGIN_NAMESPACE
+
+QWidgetPlatformFileDialog::QWidgetPlatformFileDialog(QObject *parent)
+{
+    setParent(parent);
+
+    static bool available = QWidgetPlatform::isAvailable("file dialog");
+    if (available) {
+        m_dialog.reset(new QFileDialog);
+        connect(m_dialog.data(), &QDialog::accepted, this, &QPlatformDialogHelper::accept);
+        connect(m_dialog.data(), &QDialog::rejected, this, &QPlatformDialogHelper::reject);
+
+        connect(m_dialog.data(), &QFileDialog::fileSelected, [this](const QString &file) {
+            emit fileSelected(QUrl::fromLocalFile(file));
+        });
+        connect(m_dialog.data(), &QFileDialog::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.data(), &QFileDialog::currentChanged, [this](const QString &path) {
+            emit currentChanged(QUrl::fromLocalFile(path));
+        });
+        connect(m_dialog.data(), &QFileDialog::directoryEntered, this, &QWidgetPlatformFileDialog::directoryEntered);
+        connect(m_dialog.data(), &QFileDialog::filterSelected, this, &QWidgetPlatformFileDialog::filterSelected);
+    }
+}
+
+QWidgetPlatformFileDialog::~QWidgetPlatformFileDialog()
+{
+}
+
+bool QWidgetPlatformFileDialog::defaultNameFilterDisables() const
+{
+    return false; // TODO: ?
+}
+
+void QWidgetPlatformFileDialog::setDirectory(const QUrl &directory)
+{
+    if (m_dialog)
+        m_dialog->setDirectory(directory.toLocalFile());
+}
+
+QUrl QWidgetPlatformFileDialog::directory() const
+{
+    return m_dialog ? m_dialog->directoryUrl() : QUrl();
+}
+
+void QWidgetPlatformFileDialog::selectFile(const QUrl &filename)
+{
+    if (m_dialog)
+        m_dialog->selectUrl(filename);
+}
+
+QList<QUrl> QWidgetPlatformFileDialog::selectedFiles() const
+{
+    return m_dialog ? m_dialog->selectedUrls() : QList<QUrl>();
+}
+
+void QWidgetPlatformFileDialog::setFilter()
+{
+    // TODO: ?
+}
+
+void QWidgetPlatformFileDialog::selectNameFilter(const QString &filter)
+{
+    if (m_dialog)
+        m_dialog->selectNameFilter(filter);
+}
+
+QString QWidgetPlatformFileDialog::selectedNameFilter() const
+{
+    return m_dialog ? m_dialog->selectedNameFilter() : QString();
+}
+
+void QWidgetPlatformFileDialog::exec()
+{
+    if (m_dialog)
+        m_dialog->exec();
+}
+
+bool QWidgetPlatformFileDialog::show(Qt::WindowFlags flags, Qt::WindowModality modality, QWindow *parent)
+{
+    if (!m_dialog)
+        return false;
+
+    QSharedPointer<QFileDialogOptions> options = QPlatformFileDialogHelper::options();
+    m_dialog->setWindowTitle(options->windowTitle());
+    m_dialog->setAcceptMode(static_cast<QFileDialog::AcceptMode>(options->acceptMode()));
+    m_dialog->setFileMode(static_cast<QFileDialog::FileMode>(options->fileMode()));
+    m_dialog->setOptions(static_cast<QFileDialog::Options>(int(options->options())));
+    m_dialog->setNameFilters(options->nameFilters());
+    m_dialog->setDefaultSuffix(options->defaultSuffix());
+    if (options->isLabelExplicitlySet(QFileDialogOptions::Accept))
+        m_dialog->setLabelText(QFileDialog::Accept, options->labelText(QFileDialogOptions::Accept));
+    if (options->isLabelExplicitlySet(QFileDialogOptions::Reject))
+        m_dialog->setLabelText(QFileDialog::Reject, options->labelText(QFileDialogOptions::Reject));
+
+    return QWidgetPlatformDialog::show(m_dialog.data(), flags, modality, parent);
+}
+
+void QWidgetPlatformFileDialog::hide()
+{
+    if (m_dialog)
+        m_dialog->hide();
+}
+
+QT_END_NAMESPACE
diff --git a/src/imports/platform/widgets/qwidgetplatformfiledialog_p.h b/src/imports/platform/widgets/qwidgetplatformfiledialog_p.h
new file mode 100644
index 00000000..743bc571
--- /dev/null
+++ b/src/imports/platform/widgets/qwidgetplatformfiledialog_p.h
@@ -0,0 +1,84 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Labs Platform module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QWIDGETPLATFORMFILEDIALOG_P_H
+#define QWIDGETPLATFORMFILEDIALOG_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtGui/qpa/qplatformdialoghelper.h>
+
+QT_BEGIN_NAMESPACE
+
+class QFileDialog;
+
+class QWidgetPlatformFileDialog : public QPlatformFileDialogHelper
+{
+    Q_OBJECT
+
+public:
+    explicit QWidgetPlatformFileDialog(QObject *parent = nullptr);
+    ~QWidgetPlatformFileDialog();
+
+    bool defaultNameFilterDisables() const override;
+    void setDirectory(const QUrl &directory) override;
+    QUrl directory() const override;
+    void selectFile(const QUrl &filename) override;
+    QList<QUrl> selectedFiles() const override;
+    void setFilter() override;
+    void selectNameFilter(const QString &filter) override;
+    QString selectedNameFilter() const override;
+
+    void exec() override;
+    bool show(Qt::WindowFlags flags, Qt::WindowModality modality, QWindow *parent) override;
+    void hide() override;
+
+private:
+    QScopedPointer<QFileDialog> m_dialog;
+};
+
+QT_END_NAMESPACE
+
+#endif // QWIDGETPLATFORMFILEDIALOG_P_H
diff --git a/src/imports/platform/widgets/widgets.pri b/src/imports/platform/widgets/widgets.pri
index e09e3166..c904e924 100644
--- a/src/imports/platform/widgets/widgets.pri
+++ b/src/imports/platform/widgets/widgets.pri
@@ -5,6 +5,7 @@ HEADERS += \
     $$PWD/qwidgetplatform_p.h \
     $$PWD/qwidgetplatformcolordialog_p.h \
     $$PWD/qwidgetplatformdialog_p.h \
+    $$PWD/qwidgetplatformfiledialog_p.h \
     $$PWD/qwidgetplatformfontdialog_p.h \
     $$PWD/qwidgetplatformmenu_p.h \
     $$PWD/qwidgetplatformmenuitem_p.h \
@@ -14,6 +15,7 @@ HEADERS += \
 SOURCES += \
     $$PWD/qwidgetplatformcolordialog.cpp \
     $$PWD/qwidgetplatformdialog.cpp \
+    $$PWD/qwidgetplatformfiledialog.cpp \
     $$PWD/qwidgetplatformfontdialog.cpp \
     $$PWD/qwidgetplatformmenu.cpp \
     $$PWD/qwidgetplatformmenuitem.cpp \