Long live Qt 4.5!

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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 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 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@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_TABWIDGET_H
+#define QDESIGNER_TABWIDGET_H
+
+#include "shared_global_p.h"
+#include "qdesigner_propertysheet_p.h"
+#include "qdesigner_utils_p.h"
+
+#include <QtCore/QPointer>
+#include <QtGui/QIcon>
+
+QT_BEGIN_NAMESPACE
+
+class QDesignerFormWindowInterface;
+class QTabWidget;
+class QTabBar;
+class QMenu;
+class QAction;
+
+namespace qdesigner_internal {
+    class PromotionTaskMenu;
+}
+
+class QDESIGNER_SHARED_EXPORT QTabWidgetEventFilter : public QObject
+{
+    Q_OBJECT
+public:
+    explicit QTabWidgetEventFilter(QTabWidget *parent);
+    ~QTabWidgetEventFilter();
+
+    // Install helper on QTabWidget
+    static void install(QTabWidget *tabWidget);
+    static QTabWidgetEventFilter *eventFilterOf(const QTabWidget *tabWidget);
+    // Convenience to add a menu on a tackedWidget
+    static QMenu *addTabWidgetContextMenuActions(const QTabWidget *tabWidget, QMenu *popup);
+
+    // Add context menu and return page submenu or 0.
+    QMenu *addContextMenuActions(QMenu *popup);
+
+    virtual bool eventFilter(QObject *o, QEvent *e);
+
+    QDesignerFormWindowInterface *formWindow() const;
+
+private slots:
+    void removeCurrentPage();
+    void addPage();
+    void addPageAfter();
+
+private:
+    int pageFromPosition(const QPoint &pos, QRect &rect) const;
+    QTabBar *tabBar() const;
+
+    QTabWidget *m_tabWidget;
+    mutable QPointer<QTabBar> m_cachedTabBar;
+    QPoint m_pressPoint;
+    QWidget *m_dropIndicator;
+    int m_dragIndex;
+    QWidget *m_dragPage;
+    QString m_dragLabel;
+    QIcon m_dragIcon;
+    bool m_mousePressed;
+    QAction *m_actionDeletePage;
+    QAction *m_actionInsertPage;
+    QAction *m_actionInsertPageAfter;
+    qdesigner_internal::PromotionTaskMenu* m_pagePromotionTaskMenu;
+};
+
+// PropertySheet to handle the page properties
+class QDESIGNER_SHARED_EXPORT QTabWidgetPropertySheet : public QDesignerPropertySheet {
+public:
+    explicit QTabWidgetPropertySheet(QTabWidget *object, QObject *parent = 0);
+
+    virtual void setProperty(int index, const QVariant &value);
+    virtual QVariant property(int index) const;
+    virtual bool reset(int index);
+    virtual bool isEnabled(int index) const;
+
+    // Check whether the property is to be saved. Returns false for the page
+    // properties (as the property sheet has no concept of 'stored')
+    static bool checkProperty(const QString &propertyName);
+
+private:
+    enum TabWidgetProperty { PropertyCurrentTabText, PropertyCurrentTabName, PropertyCurrentTabIcon,
+                             PropertyCurrentTabToolTip, PropertyCurrentTabWhatsThis, PropertyTabWidgetNone };
+
+    static TabWidgetProperty tabWidgetPropertyFromName(const QString &name);
+    QTabWidget *m_tabWidget;
+    struct PageData
+    {
+    qdesigner_internal::PropertySheetStringValue text;
+    qdesigner_internal::PropertySheetStringValue tooltip;
+    qdesigner_internal::PropertySheetStringValue whatsthis;
+    qdesigner_internal::PropertySheetIconValue icon;
+    };
+    QMap<QWidget *, PageData> m_pageToData;
+};
+
+typedef QDesignerPropertySheetFactory<QTabWidget, QTabWidgetPropertySheet> QTabWidgetPropertySheetFactory;
+
+QT_END_NAMESPACE
+
+#endif // QDESIGNER_TABWIDGET_H