/****************************************************************************

**

** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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** This file is part of the Qt Designer of the Qt Toolkit.

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** No Commercial Usage

** This file contains pre-release code and may not be distributed.

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** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

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** 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

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** $QT_END_LICENSE$

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****************************************************************************/

//

//  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_MENU_H

#define QDESIGNER_MENU_H

#include "shared_global_p.h"

#include <QtGui/QAction>

#include <QtGui/QMenu>

#include <QtCore/QHash>

QT_BEGIN_NAMESPACE

class QTimer;

class QLineEdit;

class QDesignerFormWindowInterface;

class QDesignerActionProviderExtension;

class QDesignerMenu;

class QDesignerMenuBar;

class QPainter;

class QMimeData;

namespace qdesigner_internal {

    class CreateSubmenuCommand;

    class ActionInsertionCommand;

}

class QDESIGNER_SHARED_EXPORT QDesignerMenu: public QMenu

{

    Q_OBJECT

public:

    QDesignerMenu(QWidget *parent = 0);

    virtual ~QDesignerMenu();

    bool eventFilter(QObject *object, QEvent *event);

    QDesignerFormWindowInterface *formWindow() const;

    QDesignerActionProviderExtension *actionProvider();

    QDesignerMenu *parentMenu() const;

    QDesignerMenuBar *parentMenuBar() const;

    virtual void setVisible(bool visible);

    void adjustSpecialActions();

    bool interactive(bool i);

    void createRealMenuAction(QAction *action);

    void removeRealMenu(QAction *action);

    static void drawSelection(QPainter *p, const QRect &r);

    bool dragging() const;

    void closeMenuChain();

    void moveLeft();

    void moveRight();

    void moveUp(bool ctrl);

    void moveDown(bool ctrl);

    // Helper for MenuTaskMenu extension

    void deleteAction(QAction *a);

private slots:

    void slotAddSeparator();

    void slotRemoveSelectedAction();

    void slotShowSubMenuNow();

    void slotDeactivateNow();

    void slotAdjustSizeNow();

protected:

    virtual void actionEvent(QActionEvent *event);

    virtual void dragEnterEvent(QDragEnterEvent *event);

    virtual void dragMoveEvent(QDragMoveEvent *event);

    virtual void dragLeaveEvent(QDragLeaveEvent *event);

    virtual void dropEvent(QDropEvent *event);

    virtual void paintEvent(QPaintEvent *event);

    virtual void keyPressEvent(QKeyEvent *event);

    virtual void keyReleaseEvent(QKeyEvent *event);

    virtual void showEvent(QShowEvent *event);

    bool handleEvent(QWidget *widget, QEvent *event);

    bool handleMouseDoubleClickEvent(QWidget *widget, QMouseEvent *event);

    bool handleMousePressEvent(QWidget *widget, QMouseEvent *event);

    bool handleMouseReleaseEvent(QWidget *widget, QMouseEvent *event);

    bool handleMouseMoveEvent(QWidget *widget, QMouseEvent *event);

    bool handleContextMenuEvent(QWidget *widget, QContextMenuEvent *event);

    bool handleKeyPressEvent(QWidget *widget, QKeyEvent *event);

    void startDrag(const QPoint &pos, Qt::KeyboardModifiers modifiers);

    void adjustIndicator(const QPoint &pos);

    int findAction(const QPoint &pos) const;

    QAction *currentAction() const;

    int realActionCount() const;

    enum ActionDragCheck { NoActionDrag, ActionDragOnSubMenu, AcceptActionDrag };

    ActionDragCheck checkAction(QAction *action) const;

    void showSubMenu(QAction *action);

    enum LeaveEditMode {

        Default = 0,

        ForceAccept

    };

    void enterEditMode();

    void leaveEditMode(LeaveEditMode mode);

    void showLineEdit();

    QAction *createAction(const QString &text, bool separator = false);

    QDesignerMenu *findOrCreateSubMenu(QAction *action);

    QAction *safeActionAt(int index) const;

    QAction *safeMenuAction(QDesignerMenu *menu) const;

    bool swap(int a, int b);

    void hideSubMenu();

    void deleteAction();

    void deactivateMenu();

    bool canCreateSubMenu(QAction *action) const;

    QDesignerMenu *findRootMenu() const;

    QDesignerMenu *findActivatedMenu() const;

    QRect subMenuPixmapRect(QAction *action) const;

    bool hasSubMenuPixmap(QAction *action) const;

    void selectCurrentAction();

private:

    bool hideSubMenuOnCursorKey();

    bool showSubMenuOnCursorKey();

    QPoint m_startPosition;

    int m_currentIndex;

    QAction *m_addItem;

    QAction *m_addSeparator;

    QHash<QAction*, QDesignerMenu*> m_subMenus;

    QTimer *m_showSubMenuTimer;

    QTimer *m_deactivateWindowTimer;

    QTimer *m_adjustSizeTimer;

    bool m_interactive;

    QLineEdit *m_editor;

    bool m_dragging;

    int m_lastSubMenuIndex;

    friend class qdesigner_internal::CreateSubmenuCommand;

    friend class qdesigner_internal::ActionInsertionCommand;

};

QT_END_NAMESPACE

#endif // QDESIGNER_MENU_H