Move model types into their own library

The model types are not part of the core QML runtime and should only be
loaded if you explicitly import them. We cannot enforce that in Qt5 as
some of them are available from the QtQml import, but we can change it
in Qt6.

Change-Id: I1e49e84d748e352537ec2d4af901c034c91d038f
Reviewed-by: Erik Verbruggen <erik.verbruggen@me.com>

1 files changed, 155 insertions, 0 deletions

diff --git a/src/qmlmodels/qqmldelegatecomponent_p.h b/src/qmlmodels/qqmldelegatecomponent_p.h
new file mode 100644
index 0000000000..1d20f0327b
--- /dev/null
+++ b/src/qmlmodels/qqmldelegatecomponent_p.h
@@ -0,0 +1,155 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtQml 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 QQMLDELEGATECOMPONENT_P_H
+#define QQMLDELEGATECOMPONENT_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 <private/qtqmlmodelsglobal_p.h>
+#include <qqmlcomponent.h>
+
+QT_REQUIRE_CONFIG(qml_delegate_model);
+
+QT_BEGIN_NAMESPACE
+
+// TODO: consider making QQmlAbstractDelegateComponent public API
+class QQmlAbstractDelegateComponentPrivate;
+class QQmlAdaptorModel;
+class Q_QMLMODELS_PRIVATE_EXPORT QQmlAbstractDelegateComponent : public QQmlComponent
+{
+    Q_OBJECT
+public:
+    QQmlAbstractDelegateComponent(QObject *parent = nullptr);
+    ~QQmlAbstractDelegateComponent() override;
+
+    virtual QQmlComponent *delegate(QQmlAdaptorModel *adaptorModel, int row, int column = 0) const = 0;
+
+signals:
+    void delegateChanged();
+
+protected:
+    QVariant value(QQmlAdaptorModel *adaptorModel,int row, int column, const QString &role) const;
+
+private:
+    Q_DECLARE_PRIVATE(QQmlAbstractDelegateComponent)
+    Q_DISABLE_COPY(QQmlAbstractDelegateComponent)
+};
+
+class Q_QMLMODELS_PRIVATE_EXPORT QQmlDelegateChoice : public QObject
+{
+    Q_OBJECT
+    Q_PROPERTY(QVariant roleValue READ roleValue WRITE setRoleValue NOTIFY roleValueChanged)
+    Q_PROPERTY(int row READ row WRITE setRow NOTIFY rowChanged)
+    Q_PROPERTY(int index READ row WRITE setRow NOTIFY indexChanged)
+    Q_PROPERTY(int column READ column WRITE setColumn NOTIFY columnChanged)
+    Q_PROPERTY(QQmlComponent* delegate READ delegate WRITE setDelegate NOTIFY delegateChanged)
+    Q_CLASSINFO("DefaultProperty", "delegate")
+public:
+    QVariant roleValue() const;
+    void setRoleValue(const QVariant &roleValue);
+
+    int row() const;
+    void setRow(int r);
+
+    int column() const;
+    void setColumn(int c);
+
+    QQmlComponent *delegate() const;
+    void setDelegate(QQmlComponent *delegate);
+
+    virtual bool match(int row, int column, const QVariant &value) const;
+
+signals:
+    void roleValueChanged();
+    void rowChanged();
+    void indexChanged();
+    void columnChanged();
+    void delegateChanged();
+    void changed();
+
+private:
+    QVariant m_value;
+    int m_row = -1;
+    int m_column = -1;
+    QQmlComponent *m_delegate = nullptr;
+};
+
+class Q_QMLMODELS_PRIVATE_EXPORT QQmlDelegateChooser : public QQmlAbstractDelegateComponent
+{
+    Q_OBJECT
+    Q_PROPERTY(QString role READ role WRITE setRole NOTIFY roleChanged)
+    Q_PROPERTY(QQmlListProperty<QQmlDelegateChoice> choices READ choices CONSTANT)
+    Q_CLASSINFO("DefaultProperty", "choices")
+
+public:
+    QString role() const { return m_role; }
+    void setRole(const QString &role);
+
+    virtual QQmlListProperty<QQmlDelegateChoice> choices();
+    static void choices_append(QQmlListProperty<QQmlDelegateChoice> *, QQmlDelegateChoice *);
+    static int choices_count(QQmlListProperty<QQmlDelegateChoice> *);
+    static QQmlDelegateChoice *choices_at(QQmlListProperty<QQmlDelegateChoice> *, int);
+    static void choices_clear(QQmlListProperty<QQmlDelegateChoice> *);
+
+    QQmlComponent *delegate(QQmlAdaptorModel *adaptorModel, int row, int column = -1) const override;
+
+signals:
+    void roleChanged();
+
+private:
+    QString m_role;
+    QList<QQmlDelegateChoice *> m_choices;
+};
+
+QT_END_NAMESPACE
+
+QML_DECLARE_TYPE(QQmlDelegateChoice)
+QML_DECLARE_TYPE(QQmlDelegateChooser)
+
+#endif // QQMLDELEGATECOMPONENT_P_H