Adding QQuickDesignerSupportMetaInfo::registerMockupObject()

This allows Qt Quick Designer to register a component with a custom parser
that can serve as a mockup for known C++ components registered
in e.g. main.cpp.

In many cases those components are the interface to the C++ backend.
While the C++ components itself are not relevant for the gui designer,
the user has to be able to instantiate gui components that use such C++
components.

Therefore we create mockup components with a custom parser, so all
property assignments are accepted.

Change-Id: I9c25752b0a5f11c2613346ffbbfd10e3b6eb3a6f
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

5 files changed, 138 insertions, 2 deletions

diff --git a/src/quick/designer/designer.pri b/src/quick/designer/designer.pri
index eb2141134d..f87ea4da04 100644
--- a/src/quick/designer/designer.pri
+++ b/src/quick/designer/designer.pri
@@ -7,7 +7,8 @@ HEADERS +=  \
    designer/qquickdesignersupportproperties_p.h \
    designer/qquickdesignersupportmetainfo_p.h \
    designer/qqmldesignermetaobject_p.h \
-   designer/qquickdesignersupport_p.h
+   designer/qquickdesignersupport_p.h \
+   designer/qquickdesignercustomparserobject_p.h
 
 SOURCES +=  \
     designer/qquickdesignercustomobjectdata.cpp \
@@ -18,4 +19,5 @@ SOURCES +=  \
     designer/qquickdesignersupportpropertychanges.cpp \
     designer/qquickdesignersupportstates.cpp \
     designer/qquickdesignerwindowmanager.cpp \
-    designer/qqmldesignermetaobject.cpp
+    designer/qqmldesignermetaobject.cpp \
+    designer/qquickdesignercustomparserobject.cpp
diff --git a/src/quick/designer/qquickdesignercustomparserobject.cpp b/src/quick/designer/qquickdesignercustomparserobject.cpp
new file mode 100644
index 0000000000..b785abe361
--- /dev/null
+++ b/src/quick/designer/qquickdesignercustomparserobject.cpp
@@ -0,0 +1,59 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtQuick module 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 "qquickdesignercustomparserobject_p.h"
+
+QT_BEGIN_NAMESPACE
+
+QQuickDesignerCustomParserObject::QQuickDesignerCustomParserObject()
+{
+
+}
+
+void QQuickDesignerCustomParser::verifyBindings(const QV4::CompiledData::Unit *, const QList<const QV4::CompiledData::Binding *> &)
+{
+    /* Nothing to do we accept anything */
+}
+
+void QQuickDesignerCustomParser::applyBindings(QObject *, QV4::CompiledData::CompilationUnit *, const QList<const QV4::CompiledData::Binding *> &)
+{
+    /* Nothing to do we accept anything */
+}
+
+QT_END_NAMESPACE
diff --git a/src/quick/designer/qquickdesignercustomparserobject_p.h b/src/quick/designer/qquickdesignercustomparserobject_p.h
new file mode 100644
index 0000000000..06206443b2
--- /dev/null
+++ b/src/quick/designer/qquickdesignercustomparserobject_p.h
@@ -0,0 +1,68 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtQuick module 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.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QUICKDESIGNERCUSTOMPARSEROBJECT_H
+#define QUICKDESIGNERCUSTOMPARSEROBJECT_H
+
+#include <QObject>
+#include <private/qqmlcustomparser_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QQuickDesignerCustomParserObject : public QObject
+{
+    Q_OBJECT
+
+public:
+    QQuickDesignerCustomParserObject();
+};
+
+class QQuickDesignerCustomParser : public QQmlCustomParser
+{
+public:
+    QQuickDesignerCustomParser()
+    : QQmlCustomParser(AcceptsAttachedProperties | AcceptsSignalHandlers) {}
+
+    void verifyBindings(const QV4::CompiledData::Unit *qmlUnit, const QList<const QV4::CompiledData::Binding *> &props) override;
+    void applyBindings(QObject *obj, QV4::CompiledData::CompilationUnit *compilationUnit, const QList<const QV4::CompiledData::Binding *> &bindings) override;
+};
+
+QT_END_NAMESPACE
+
+#endif // QUICKDESIGNERCUSTOMPARSEROBJECT_H
diff --git a/src/quick/designer/qquickdesignersupportmetainfo.cpp b/src/quick/designer/qquickdesignersupportmetainfo.cpp
index 27c9814ef1..332ae26bd4 100644
--- a/src/quick/designer/qquickdesignersupportmetainfo.cpp
+++ b/src/quick/designer/qquickdesignersupportmetainfo.cpp
@@ -37,6 +37,7 @@
 **
 ****************************************************************************/
 
+#include "qquickdesignercustomparserobject_p.h"
 #include "qquickdesignersupportmetainfo_p.h"
 #include "qqmldesignermetaobject_p.h"
 
@@ -70,5 +71,10 @@ void QQuickDesignerSupportMetaInfo::registerNotifyPropertyChangeCallBack(void (*
     QQmlDesignerMetaObject::registerNotifyPropertyChangeCallBack(callback);
 }
 
+void QQuickDesignerSupportMetaInfo::registerMockupObject(const char *uri, int versionMajor, int versionMinor, const char *qmlName)
+{
+    qmlRegisterCustomType<QQuickDesignerCustomParserObject>(uri, versionMajor, versionMinor, qmlName, new QQuickDesignerCustomParser);
+}
+
 QT_END_NAMESPACE
 
diff --git a/src/quick/designer/qquickdesignersupportmetainfo_p.h b/src/quick/designer/qquickdesignersupportmetainfo_p.h
index 43cd8e8fb1..344d720d98 100644
--- a/src/quick/designer/qquickdesignersupportmetainfo_p.h
+++ b/src/quick/designer/qquickdesignersupportmetainfo_p.h
@@ -63,6 +63,7 @@ class Q_QUICK_EXPORT QQuickDesignerSupportMetaInfo
 public:
     static bool isSubclassOf(QObject *object, const QByteArray &superTypeName);
     static void registerNotifyPropertyChangeCallBack(void (*callback)(QObject *, const QQuickDesignerSupport::PropertyName &));
+    static void registerMockupObject(const char *uri, int versionMajor, int versionMinor, const char *qmlName);
 };
 
 QT_END_NAMESPACE