Add QPlatformServices class.

- Add QPlatformServices as back-end for
  QDesktopServices.
- Bring back UNIX/Linux desktop detection in platformsupport
  as a generic implementation.
- Add Windows implementation.

Reviewed-by: Morten Johan Sorvig <morten.sorvig@nokia.com>
Reviewed-by: Samuel Rødal <samuel.rodal@nokia.com>
Reviewed-by: Anselmo Lacerda S. de Melo <anselmo.melo@openbossa.org>

Change-Id: If94bb65755df4f849edd83c57143ee2c73002137
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@nokia.com>

5 files changed, 151 insertions, 2 deletions

diff --git a/src/gui/kernel/kernel.pri b/src/gui/kernel/kernel.pri
index 7b01ba14cd..9c5f3b10da 100644
--- a/src/gui/kernel/kernel.pri
+++ b/src/gui/kernel/kernel.pri
@@ -55,7 +55,8 @@ HEADERS += \
         kernel/qtouchdevice.h \
         kernel/qtouchdevice_p.h \
         kernel/qplatformsharedgraphicscache_qpa.h \
-        kernel/qplatformdialoghelper_qpa.h
+        kernel/qplatformdialoghelper_qpa.h \
+        kernel/qplatformservices_qpa.h
 
 SOURCES += \
         kernel/qclipboard_qpa.cpp \
@@ -97,7 +98,8 @@ SOURCES += \
         kernel/qstylehints.cpp \
         kernel/qtouchdevice.cpp \
         kernel/qplatformsharedgraphicscache_qpa.cpp \
-        kernel/qplatformdialoghelper_qpa.cpp
+        kernel/qplatformdialoghelper_qpa.cpp \
+        kernel/qplatformservices_qpa.cpp
 
 contains(QT_CONFIG, opengl)|contains(QT_CONFIG, opengles2)|contains(QT_CONFIG, egl) {
     HEADERS += \
diff --git a/src/gui/kernel/qplatformintegration_qpa.cpp b/src/gui/kernel/qplatformintegration_qpa.cpp
index e867e4e588..1336a1a9a2 100644
--- a/src/gui/kernel/qplatformintegration_qpa.cpp
+++ b/src/gui/kernel/qplatformintegration_qpa.cpp
@@ -107,6 +107,11 @@ QPlatformNativeInterface * QPlatformIntegration::nativeInterface() const
     return 0;
 }
 
+QPlatformServices *QPlatformIntegration::services() const
+{
+    return 0;
+}
+
 /*!
     \class QPlatformIntegration
     \since 4.8
diff --git a/src/gui/kernel/qplatformintegration_qpa.h b/src/gui/kernel/qplatformintegration_qpa.h
index efaf495b81..bd9ecd54dc 100644
--- a/src/gui/kernel/qplatformintegration_qpa.h
+++ b/src/gui/kernel/qplatformintegration_qpa.h
@@ -66,6 +66,7 @@ class QPlatformAccessibility;
 class QPlatformTheme;
 class QPlatformDialogHelper;
 class QPlatformSharedGraphicsCache;
+class QPlatformServices;
 
 class Q_GUI_EXPORT QPlatformIntegration
 {
@@ -106,6 +107,8 @@ public:
     // Access native handles. The window handle is already available from Wid;
     virtual QPlatformNativeInterface *nativeInterface() const;
 
+    virtual QPlatformServices *services() const;
+
     enum StyleHint {
         CursorFlashTime,
         KeyboardInputInterval,
diff --git a/src/gui/kernel/qplatformservices_qpa.cpp b/src/gui/kernel/qplatformservices_qpa.cpp
new file mode 100644
index 0000000000..7993a82f4e
--- /dev/null
+++ b/src/gui/kernel/qplatformservices_qpa.cpp
@@ -0,0 +1,74 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 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 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qplatformservices_qpa.h"
+
+#include <QtCore/QUrl>
+#include <QtCore/QString>
+#include <QtCore/QDebug>
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QPlatformServices
+    \since 5.0
+    \internal
+    \preliminary
+    \ingroup qpa
+
+    \brief The QPlatformServices provides the backend for desktop-related functionality.
+*/
+
+bool QPlatformServices::openUrl(const QUrl &url)
+{
+    qWarning("This plugin does not support QPlatformServices::openUrl() for '%s'.",
+             qPrintable(url.toString()));
+    return false;
+}
+
+bool QPlatformServices::openDocument(const QUrl &url)
+{
+    qWarning("This plugin does not support QPlatformServices::openDocument() for '%s'.",
+             qPrintable(url.toString()));
+    return false;
+}
+
+QT_END_NAMESPACE
diff --git a/src/gui/kernel/qplatformservices_qpa.h b/src/gui/kernel/qplatformservices_qpa.h
new file mode 100644
index 0000000000..aff2e5d6fe
--- /dev/null
+++ b/src/gui/kernel/qplatformservices_qpa.h
@@ -0,0 +1,65 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 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 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QPLATFORMSERVICES_QPA_H
+#define QPLATFORMSERVICES_QPA_H
+
+#include <QtCore/QtGlobal>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+class QUrl;
+
+class Q_GUI_EXPORT QPlatformServices
+{
+public:
+    virtual ~QPlatformServices() { }
+
+    virtual bool openUrl(const QUrl &url);
+    virtual bool openDocument(const QUrl &url);
+};
+
+QT_END_NAMESPACE
+QT_END_HEADER
+
+#endif // QPLATFORMSERVICES_QPA_H