Move wl-shell to a plugin

[ChangeLog][QPA plugin] The wl-shell shell integration has been moved to a
plugin.

This also adds API so shell integrations can return native resources for
windows, as it was needed in order to continue to supporting wl_shell_surface.

Change-Id: Ibc68ffcc5b0c6993d8f4e078f663e4d67340e1a5
Reviewed-by: Paul Olav Tvete <paul.tvete@qt.io>

15 files changed, 142 insertions, 54 deletions

diff --git a/src/client/client.pro b/src/client/client.pro
index 1bcd6780c..b14570046 100644
--- a/src/client/client.pro
+++ b/src/client/client.pro
@@ -42,8 +42,6 @@ SOURCES +=  qwaylandintegration.cpp \
             qwaylandscreen.cpp \
             qwaylandshmwindow.cpp \
             qwaylandshellsurface.cpp \
-            qwaylandwlshellsurface.cpp \
-            qwaylandwlshellintegration.cpp \
             qwaylandxdgshellv6.cpp \
             qwaylandxdgshellv6integration.cpp \
             qwaylandextendedsurface.cpp \
@@ -71,8 +69,6 @@ HEADERS +=  qwaylandintegration_p.h \
             qwaylandbuffer_p.h \
             qwaylandshmwindow_p.h \
             qwaylandshellsurface_p.h \
-            qwaylandwlshellsurface_p.h \
-            qwaylandwlshellintegration_p.h \
             qwaylandxdgshellv6_p.h \
             qwaylandxdgshellv6integration_p.h \
             qwaylandextendedsurface_p.h \
diff --git a/src/client/qwaylanddisplay.cpp b/src/client/qwaylanddisplay.cpp
index 0199e169d..946e99bc8 100644
--- a/src/client/qwaylanddisplay.cpp
+++ b/src/client/qwaylanddisplay.cpp
@@ -51,7 +51,6 @@
 #include "qwaylanddatadevicemanager_p.h"
 #endif
 #include "qwaylandhardwareintegration_p.h"
-#include "qwaylandwlshellsurface_p.h"
 #include "qwaylandinputcontext_p.h"
 
 #include "qwaylandwindowmanagerintegration_p.h"
diff --git a/src/client/qwaylanddisplay_p.h b/src/client/qwaylanddisplay_p.h
index 72f8444e0..d39e561f6 100644
--- a/src/client/qwaylanddisplay_p.h
+++ b/src/client/qwaylanddisplay_p.h
@@ -80,7 +80,7 @@ namespace QtWayland {
 
 namespace QtWaylandClient {
 
-Q_DECLARE_LOGGING_CATEGORY(lcQpaWayland);
+Q_WAYLAND_CLIENT_EXPORT Q_DECLARE_LOGGING_CATEGORY(lcQpaWayland);
 
 class QWaylandInputDevice;
 class QWaylandBuffer;
diff --git a/src/client/qwaylandintegration.cpp b/src/client/qwaylandintegration.cpp
index 2a169aca6..fbfdd57f4 100644
--- a/src/client/qwaylandintegration.cpp
+++ b/src/client/qwaylandintegration.cpp
@@ -77,7 +77,6 @@
 
 #include "qwaylandshellintegration_p.h"
 #include "qwaylandshellintegrationfactory_p.h"
-#include "qwaylandwlshellintegration_p.h"
 #include "qwaylandxdgshellv6integration_p.h"
 
 #include "qwaylandinputdeviceintegration_p.h"
@@ -442,9 +441,7 @@ void QWaylandIntegration::initializeInputDeviceIntegration()
 
 QWaylandShellIntegration *QWaylandIntegration::createShellIntegration(const QString &integrationName)
 {
-    if (integrationName == QLatin1Literal("wl-shell")) {
-        return QWaylandWlShellIntegration::create(mDisplay.data());
-    } else if (integrationName == QLatin1Literal("xdg-shell-v6")) {
+    if (integrationName == QLatin1Literal("xdg-shell-v6")) {
         return QWaylandXdgShellV6Integration::create(mDisplay.data());
     } else if (QWaylandShellIntegrationFactory::keys().contains(integrationName)) {
         return QWaylandShellIntegrationFactory::create(integrationName, mDisplay.data());
diff --git a/src/client/qwaylandnativeinterface.cpp b/src/client/qwaylandnativeinterface.cpp
index 9946c3235..76acb526b 100644
--- a/src/client/qwaylandnativeinterface.cpp
+++ b/src/client/qwaylandnativeinterface.cpp
@@ -40,13 +40,13 @@
 #include "qwaylandnativeinterface_p.h"
 #include "qwaylanddisplay_p.h"
 #include "qwaylandwindow_p.h"
+#include "qwaylandshellintegration_p.h"
 #include "qwaylandsubsurface_p.h"
 #include "qwaylandextendedsurface_p.h"
 #include "qwaylandintegration_p.h"
 #include "qwaylanddisplay_p.h"
 #include "qwaylandwindowmanagerintegration_p.h"
 #include "qwaylandscreen_p.h"
-#include "qwaylandwlshellsurface_p.h"
 #include <QtGui/private/qguiapplication_p.h>
 #include <QtGui/QScreen>
 #include <QtWaylandClient/private/qwaylandclientbufferintegration_p.h>
@@ -91,18 +91,13 @@ void *QWaylandNativeInterface::nativeResourceForWindow(const QByteArray &resourc
         QWaylandWindow *w = static_cast<QWaylandWindow*>(window->handle());
         return w ? w->object() : nullptr;
     }
-    if (lowerCaseResource == "wl_shell_surface") {
-        QWaylandWindow *w = static_cast<QWaylandWindow*>(window->handle());
-        if (!w)
-            return nullptr;
-        QWaylandWlShellSurface *s = qobject_cast<QWaylandWlShellSurface *>(w->shellSurface());
-        if (!s)
-            return nullptr;
-        return s->object();
-    }
+
     if (lowerCaseResource == "egldisplay" && m_integration->clientBufferIntegration())
         return m_integration->clientBufferIntegration()->nativeResource(QWaylandClientBufferIntegration::EglDisplay);
 
+    if (auto shellIntegration = m_integration->shellIntegration())
+        return shellIntegration->nativeResourceForWindow(resourceString, window);
+
     return nullptr;
 }
 
diff --git a/src/client/qwaylandwindow.cpp b/src/client/qwaylandwindow.cpp
index 45f9a19b2..ef49e8ea8 100644
--- a/src/client/qwaylandwindow.cpp
+++ b/src/client/qwaylandwindow.cpp
@@ -44,7 +44,6 @@
 #include "qwaylandinputdevice_p.h"
 #include "qwaylandscreen_p.h"
 #include "qwaylandshellsurface_p.h"
-#include "qwaylandwlshellsurface_p.h"
 #include "qwaylandsubsurface_p.h"
 #include "qwaylandabstractdecoration_p.h"
 #include "qwaylandwindowmanagerintegration_p.h"
diff --git a/src/client/shellintegration/qwaylandshellintegration_p.h b/src/client/shellintegration/qwaylandshellintegration_p.h
index 7f3a2cefc..ccad00481 100644
--- a/src/client/shellintegration/qwaylandshellintegration_p.h
+++ b/src/client/shellintegration/qwaylandshellintegration_p.h
@@ -79,6 +79,11 @@ public:
         if (oldFocus)
             m_display->handleWindowDeactivated(oldFocus);
     }
+    virtual void *nativeResourceForWindow(const QByteArray &resource, QWindow *window) {
+        Q_UNUSED(resource);
+        Q_UNUSED(window);
+        return nullptr;
+    }
 
 protected:
     QWaylandDisplay *m_display = nullptr;
diff --git a/src/plugins/shellintegration/shellintegration.pro b/src/plugins/shellintegration/shellintegration.pro
index 7f465d61b..12a900db2 100644
--- a/src/plugins/shellintegration/shellintegration.pro
+++ b/src/plugins/shellintegration/shellintegration.pro
@@ -2,4 +2,6 @@ TEMPLATE = subdirs
 
 SUBDIRS += \
     ivi-shell \
-    xdg-shell-v5
+    xdg-shell-v5 \
+    wl-shell \
+
diff --git a/src/plugins/shellintegration/wl-shell/main.cpp b/src/plugins/shellintegration/wl-shell/main.cpp
new file mode 100644
index 000000000..9b033b5f3
--- /dev/null
+++ b/src/plugins/shellintegration/wl-shell/main.cpp
@@ -0,0 +1,69 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Copyright (C) 2017 ITAGE Corporation, author: <yusuke.binsaki@itage.co.jp>
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://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.LGPL3 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-3.0.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 (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qwaylandwlshellintegration_p.h"
+
+#include <QtWaylandClient/private/qwaylandshellintegrationplugin_p.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace QtWaylandClient {
+
+class QWaylandWlShellIntegrationPlugin : public QWaylandShellIntegrationPlugin
+{
+    Q_OBJECT
+    Q_PLUGIN_METADATA(IID QWaylandShellIntegrationFactoryInterface_iid FILE "wl-shell.json")
+
+public:
+    QWaylandShellIntegration *create(const QString &key, const QStringList &paramList) override;
+};
+
+QWaylandShellIntegration *QWaylandWlShellIntegrationPlugin::create(const QString &key, const QStringList &paramList)
+{
+    Q_UNUSED(key);
+    Q_UNUSED(paramList);
+    return new QWaylandWlShellIntegration();
+}
+
+}
+
+QT_END_NAMESPACE
+
+#include "main.moc"
diff --git a/src/client/qwaylandwlshellintegration.cpp b/src/plugins/shellintegration/wl-shell/qwaylandwlshellintegration.cpp
index c76628420..be156dad2 100644
--- a/src/client/qwaylandwlshellintegration.cpp
+++ b/src/plugins/shellintegration/wl-shell/qwaylandwlshellintegration.cpp
@@ -38,29 +38,16 @@
 ****************************************************************************/
 
 #include "qwaylandwlshellintegration_p.h"
+#include "qwaylandwlshellsurface_p.h"
 
 #include <QtWaylandClient/private/qwaylandwindow_p.h>
 #include <QtWaylandClient/private/qwaylanddisplay_p.h>
-#include <QtWaylandClient/private/qwaylandwlshellsurface_p.h>
 
 QT_BEGIN_NAMESPACE
 
 namespace QtWaylandClient {
 
-QWaylandWlShellIntegration *QWaylandWlShellIntegration::create(QWaylandDisplay *display)
-{
-    if (!display->hasRegistryGlobal(QLatin1String("wl_shell")))
-        return nullptr;
-
-    QScopedPointer<QWaylandWlShellIntegration> integration;
-    integration.reset(new QWaylandWlShellIntegration(display));
-    if (integration && !integration->initialize(display))
-        return nullptr;
-
-    return integration.take();
-}
-
-QWaylandWlShellIntegration::QWaylandWlShellIntegration(QWaylandDisplay *display)
+bool QWaylandWlShellIntegration::initialize(QWaylandDisplay *display)
 {
     Q_FOREACH (QWaylandDisplay::RegistryGlobal global, display->globals()) {
         if (global.interface == QLatin1String("wl_shell")) {
@@ -68,19 +55,33 @@ QWaylandWlShellIntegration::QWaylandWlShellIntegration(QWaylandDisplay *display)
             break;
         }
     }
-}
 
-bool QWaylandWlShellIntegration::initialize(QWaylandDisplay *display)
-{
-    QWaylandShellIntegration::initialize(display);
-    return m_wlShell != nullptr;
-};
+    if (!m_wlShell) {
+        qCDebug(lcQpaWayland) << "Couldn't find global wl_shell";
+        return false;
+    }
+
+    return QWaylandShellIntegration::initialize(display);
+}
 
 QWaylandShellSurface *QWaylandWlShellIntegration::createShellSurface(QWaylandWindow *window)
 {
     return new QWaylandWlShellSurface(m_wlShell->get_shell_surface(window->object()), window);
 }
 
+void *QWaylandWlShellIntegration::nativeResourceForWindow(const QByteArray &resource, QWindow *window)
+{
+    QByteArray lowerCaseResource = resource.toLower();
+    if (lowerCaseResource == "wl_shell_surface") {
+        if (auto waylandWindow = static_cast<QWaylandWindow *>(window->handle())) {
+            if (auto shellSurface = qobject_cast<QWaylandWlShellSurface *>(waylandWindow->shellSurface())) {
+                return shellSurface->object();
+            }
+        }
+    }
+    return nullptr;
 }
 
+} // namespace QtWaylandClient
+
 QT_END_NAMESPACE
diff --git a/src/client/qwaylandwlshellintegration_p.h b/src/plugins/shellintegration/wl-shell/qwaylandwlshellintegration_p.h
index 7a6b53524..80a7507d4 100644
--- a/src/client/qwaylandwlshellintegration_p.h
+++ b/src/plugins/shellintegration/wl-shell/qwaylandwlshellintegration_p.h
@@ -63,13 +63,12 @@ namespace QtWaylandClient {
 class Q_WAYLAND_CLIENT_EXPORT QWaylandWlShellIntegration : public QWaylandShellIntegration
 {
 public:
-    static QWaylandWlShellIntegration *create(QWaylandDisplay* display);
+    QWaylandWlShellIntegration() {}
     bool initialize(QWaylandDisplay *) override;
     QWaylandShellSurface *createShellSurface(QWaylandWindow *window) override;
+    void *nativeResourceForWindow(const QByteArray &resource, QWindow *window) override;
 
 private:
-    QWaylandWlShellIntegration(QWaylandDisplay* display);
-
     QtWayland::wl_shell *m_wlShell = nullptr;
 };
 
diff --git a/src/client/qwaylandwlshellsurface.cpp b/src/plugins/shellintegration/wl-shell/qwaylandwlshellsurface.cpp
index 3601fd437..9f2bcc00c 100644
--- a/src/client/qwaylandwlshellsurface.cpp
+++ b/src/plugins/shellintegration/wl-shell/qwaylandwlshellsurface.cpp
@@ -39,12 +39,12 @@
 
 #include "qwaylandwlshellsurface_p.h"
 
-#include "qwaylanddisplay_p.h"
-#include "qwaylandwindow_p.h"
-#include "qwaylandinputdevice_p.h"
-#include "qwaylandabstractdecoration_p.h"
-#include "qwaylandscreen_p.h"
-#include "qwaylandextendedsurface_p.h"
+#include <QtWaylandClient/private/qwaylanddisplay_p.h>
+#include <QtWaylandClient/private/qwaylandwindow_p.h>
+#include <QtWaylandClient/private/qwaylandinputdevice_p.h>
+#include <QtWaylandClient/private/qwaylandabstractdecoration_p.h>
+#include <QtWaylandClient/private/qwaylandscreen_p.h>
+#include <QtWaylandClient/private/qwaylandextendedsurface_p.h>
 
 #include <QtCore/QDebug>
 
@@ -229,11 +229,11 @@ void QWaylandWlShellSurface::setPopup(QWaylandWindow *parent, QWaylandInputDevic
 {
     QWaylandWindow *parent_wayland_window = parent;
     if (!parent_wayland_window) {
-        qWarning("setPopup called without parent window");
+        qCWarning(lcQpaWayland) << "setPopup called without a parent window";
         return;
     }
     if (!device) {
-        qWarning("setPopup called without input device");
+        qCWarning(lcQpaWayland) << "setPopup called without an input device";
         return;
     }
 
diff --git a/src/client/qwaylandwlshellsurface_p.h b/src/plugins/shellintegration/wl-shell/qwaylandwlshellsurface_p.h
index ca81dd685..ca81dd685 100644
--- a/src/client/qwaylandwlshellsurface_p.h
+++ b/src/plugins/shellintegration/wl-shell/qwaylandwlshellsurface_p.h
diff --git a/src/plugins/shellintegration/wl-shell/wl-shell.json b/src/plugins/shellintegration/wl-shell/wl-shell.json
new file mode 100644
index 000000000..1859bb58a
--- /dev/null
+++ b/src/plugins/shellintegration/wl-shell/wl-shell.json
@@ -0,0 +1,3 @@
+{
+    "Keys":[ "wl-shell" ]
+}
diff --git a/src/plugins/shellintegration/wl-shell/wl-shell.pro b/src/plugins/shellintegration/wl-shell/wl-shell.pro
new file mode 100644
index 000000000..211dc876f
--- /dev/null
+++ b/src/plugins/shellintegration/wl-shell/wl-shell.pro
@@ -0,0 +1,23 @@
+QT += gui-private waylandclient-private
+CONFIG += wayland-scanner
+
+QMAKE_USE += wayland-client
+
+WAYLANDCLIENTSOURCES += \
+    ../../../3rdparty/protocol/wayland.xml
+
+HEADERS += \
+    qwaylandwlshellintegration_p.h \
+    qwaylandwlshellsurface_p.h \
+
+SOURCES += \
+    main.cpp \
+    qwaylandwlshellintegration.cpp \
+    qwaylandwlshellsurface.cpp \
+
+OTHER_FILES += \
+    wl-shell.json
+
+PLUGIN_TYPE = wayland-shell-integration
+PLUGIN_CLASS_NAME = QWaylandWlShellIntegrationPlugin
+load(qt_plugin)