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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Designer of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of Qt Designer.  This header
+// file may change from version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#ifndef QDESIGNER_WIDGETBOX_H
+#define QDESIGNER_WIDGETBOX_H
+
+#include "shared_global_p.h"
+#include <QtDesigner/QDesignerWidgetBoxInterface>
+
+QT_BEGIN_NAMESPACE
+
+class DomUI;
+
+namespace qdesigner_internal {
+
+// A widget box with a load mode that allows for updating custom widgets.
+
+class QDESIGNER_SHARED_EXPORT QDesignerWidgetBox : public QDesignerWidgetBoxInterface
+{
+    Q_OBJECT
+public:
+    enum LoadMode { LoadMerge, LoadReplace, LoadCustomWidgetsOnly };
+
+    explicit QDesignerWidgetBox(QWidget *parent = 0, Qt::WindowFlags flags = 0);
+
+    LoadMode loadMode() const;
+    void setLoadMode(LoadMode lm);
+
+    virtual bool loadContents(const QString &contents) = 0;
+
+    // Convenience to access the widget box icon of a widget. Empty category
+    // matches all
+    virtual QIcon iconForWidget(const QString &className,
+                                const QString &category = QString()) const = 0;
+
+    // Convenience to find a widget by class name. Empty category matches all
+    static bool findWidget(const QDesignerWidgetBoxInterface *wbox,
+                           const QString &className,
+                           const QString &category /* = QString()  */,
+                           Widget *widgetData);
+    // Convenience functions to create a DomWidget from widget box xml.
+    static DomUI *xmlToUi(const QString &name, const QString &xml, bool insertFakeTopLevel, QString *errorMessage);
+    static DomUI *xmlToUi(const QString &name, const QString &xml, bool insertFakeTopLevel);
+
+private:
+    LoadMode m_loadMode;
+};
+}  // namespace qdesigner_internal
+
+QT_END_NAMESPACE
+
+#endif // QDESIGNER_WIDGETBOX_H