Platform: add MessageDialog

Change-Id: I89f67fa4f620dc81dd9e7fe848f37ea5c12d5db7
Reviewed-by: J-P Nurmi <jpnurmi@qt.io>

3 files changed, 171 insertions, 0 deletions

diff --git a/src/imports/platform/widgets/qwidgetplatformmessagedialog.cpp b/src/imports/platform/widgets/qwidgetplatformmessagedialog.cpp
new file mode 100644
index 00000000..70c6e7e4
--- /dev/null
+++ b/src/imports/platform/widgets/qwidgetplatformmessagedialog.cpp
@@ -0,0 +1,94 @@
+/****************************************************************************
+**
+** 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 "qwidgetplatformmessagedialog_p.h"
+#include "qwidgetplatformdialog_p.h"
+#include "qwidgetplatform_p.h"
+
+#include <QtWidgets/qmessagebox.h>
+#include <QtWidgets/qabstractbutton.h>
+
+QT_BEGIN_NAMESPACE
+
+QWidgetPlatformMessageDialog::QWidgetPlatformMessageDialog(QObject *parent)
+{
+    setParent(parent);
+
+    static bool available = QWidgetPlatform::isAvailable("message dialog");
+    if (available) {
+        m_dialog.reset(new QMessageBox);
+        connect(m_dialog.data(), &QMessageBox::accepted, this, &QPlatformDialogHelper::accept);
+        connect(m_dialog.data(), &QMessageBox::rejected, this, &QPlatformDialogHelper::reject);
+        connect(m_dialog.data(), &QMessageBox::buttonClicked, [this](QAbstractButton *button) {
+            QMessageBox::ButtonRole role = m_dialog->buttonRole(button);
+            QMessageBox::StandardButton standardButton = m_dialog->standardButton(button);
+            emit clicked(static_cast<StandardButton>(standardButton), static_cast<ButtonRole>(role));
+        });
+    }
+}
+
+QWidgetPlatformMessageDialog::~QWidgetPlatformMessageDialog()
+{
+}
+void QWidgetPlatformMessageDialog::exec()
+{
+    if (m_dialog)
+        m_dialog->exec();
+}
+
+bool QWidgetPlatformMessageDialog::show(Qt::WindowFlags flags, Qt::WindowModality modality, QWindow *parent)
+{
+    if (!m_dialog)
+        return false;
+
+    QSharedPointer<QMessageDialogOptions> options = QPlatformMessageDialogHelper::options();
+    m_dialog->setWindowTitle(options->windowTitle());
+    m_dialog->setIcon(static_cast<QMessageBox::Icon>(options->icon()));
+    m_dialog->setText(options->text());
+    m_dialog->setInformativeText(options->informativeText());
+    m_dialog->setDetailedText(options->detailedText());
+    m_dialog->setStandardButtons(static_cast<QMessageBox::StandardButtons>(int(options->standardButtons())));
+
+    return QWidgetPlatformDialog::show(m_dialog.data(), flags, modality, parent);
+}
+
+void QWidgetPlatformMessageDialog::hide()
+{
+    if (m_dialog)
+        m_dialog->hide();
+}
+
+QT_END_NAMESPACE
diff --git a/src/imports/platform/widgets/qwidgetplatformmessagedialog_p.h b/src/imports/platform/widgets/qwidgetplatformmessagedialog_p.h
new file mode 100644
index 00000000..319bb34d
--- /dev/null
+++ b/src/imports/platform/widgets/qwidgetplatformmessagedialog_p.h
@@ -0,0 +1,75 @@
+/****************************************************************************
+**
+** 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 QWIDGETPLATFORMMESSAGEDIALOG_P_H
+#define QWIDGETPLATFORMMESSAGEDIALOG_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 QMessageBox;
+
+class QWidgetPlatformMessageDialog : public QPlatformMessageDialogHelper
+{
+    Q_OBJECT
+
+public:
+    explicit QWidgetPlatformMessageDialog(QObject *parent = nullptr);
+    ~QWidgetPlatformMessageDialog();
+
+    void exec() override;
+    bool show(Qt::WindowFlags flags, Qt::WindowModality modality, QWindow *parent) override;
+    void hide() override;
+
+private:
+    QScopedPointer<QMessageBox> m_dialog;
+};
+
+QT_END_NAMESPACE
+
+#endif // QWIDGETPLATFORMMESSAGEDIALOG_P_H
diff --git a/src/imports/platform/widgets/widgets.pri b/src/imports/platform/widgets/widgets.pri
index a9e5d42b..e09e3166 100644
--- a/src/imports/platform/widgets/widgets.pri
+++ b/src/imports/platform/widgets/widgets.pri
@@ -8,6 +8,7 @@ HEADERS += \
     $$PWD/qwidgetplatformfontdialog_p.h \
     $$PWD/qwidgetplatformmenu_p.h \
     $$PWD/qwidgetplatformmenuitem_p.h \
+    $$PWD/qwidgetplatformmessagedialog_p.h \
     $$PWD/qwidgetplatformsystemtrayicon_p.h
 
 SOURCES += \
@@ -16,4 +17,5 @@ SOURCES += \
     $$PWD/qwidgetplatformfontdialog.cpp \
     $$PWD/qwidgetplatformmenu.cpp \
     $$PWD/qwidgetplatformmenuitem.cpp \
+    $$PWD/qwidgetplatformmessagedialog.cpp \
     $$PWD/qwidgetplatformsystemtrayicon.cpp