Rename QQuickStyleAttached to QQuickAttachedObject

This is becoming a generic recursive attached object type that can be
used for palettes too, which are planned to be used for the upcoming
image-based style.

Change-Id: I693d307ea16e73540ec9519b2ab18a314ff44272
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>

1 files changed, 90 insertions, 0 deletions

diff --git a/src/quickcontrols2/qquickattachedobject_p.h b/src/quickcontrols2/qquickattachedobject_p.h
new file mode 100644
index 00000000..7fc0ce13
--- /dev/null
+++ b/src/quickcontrols2/qquickattachedobject_p.h
@@ -0,0 +1,90 @@
+/****************************************************************************
+**
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Quick Controls 2 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 QQUICKATTACHEDOBJECT_P_H
+#define QQUICKATTACHEDOBJECT_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 <QtQml/qqml.h>
+#include <QtCore/qlist.h>
+#include <QtCore/qobject.h>
+#include <QtCore/qpointer.h>
+#include <QtQuick/private/qquickitemchangelistener_p.h>
+#include <QtQuickControls2/private/qtquickcontrols2global_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QQuickWindow;
+
+class Q_QUICKCONTROLS2_PRIVATE_EXPORT QQuickAttachedObject : public QObject, public QQuickItemChangeListener
+{
+    Q_OBJECT
+
+public:
+    explicit QQuickAttachedObject(QObject *parent = nullptr);
+    ~QQuickAttachedObject();
+
+    QList<QQuickAttachedObject *> attachedChildren() const;
+
+    QQuickAttachedObject *attachedParent() const;
+    void setAttachedParent(QQuickAttachedObject *parent);
+
+protected:
+    void init();
+
+    virtual void attachedParentChange(QQuickAttachedObject *newParent, QQuickAttachedObject *oldParent);
+
+    void itemWindowChanged(QQuickWindow *window);
+    void itemParentChanged(QQuickItem *item, QQuickItem *parent) override;
+
+private:
+    QList<QQuickAttachedObject *> m_attachedChildren;
+    QPointer<QQuickAttachedObject> m_attachedParent;
+};
+
+QT_END_NAMESPACE
+
+#endif // QQUICKATTACHEDOBJECT_P_H