1 /*

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

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 *

    16 */

    17 

    18 

    19 #ifndef MODELMENU_H

    20 #define MODELMENU_H

    21 

    22 #include <QtGui/QMenu>

    23 #include <QtCore/QAbstractItemModel>

    24 

    25 // A QMenu that is dynamically populated from a QAbstractItemModel

    26 class ModelMenu : public QMenu

    27 {

    28     Q_OBJECT

    29 

    30 signals:

    31     void activated(const QModelIndex &index);

    32     void hovered(const QString &text);

    33 

    34 public:

    35     ModelMenu(QWidget *parent = 0);

    36 

    37     void setModel(QAbstractItemModel *model);

    38     QAbstractItemModel *model() const;

    39 

    40     void setMaxRows(int max);

    41     int maxRows() const;

    42 

    43     void setFirstSeparator(int offset);

    44     int firstSeparator() const;

    45 

    46     void setRootIndex(const QModelIndex &index);

    47     QModelIndex rootIndex() const;

    48 

    49     void setHoverRole(int role);

    50     int hoverRole() const;

    51 

    52     void setSeparatorRole(int role);

    53     int separatorRole() const;

    54 

    55     QAction *makeAction(const QIcon &icon, const QString &text, QObject *parent);

    56 

    57 protected:

    58     // add any actions before the tree, return true if any actions are added.

    59     virtual bool prePopulated();

    60     // add any actions after the tree

    61     virtual void postPopulated();

    62     // put all of the children of parent into menu up to max

    63     void createMenu(const QModelIndex &parent, int max, QMenu *parentMenu = 0, QMenu *menu = 0);

    64 

    65 private slots:

    66     void aboutToShow();

    67     void triggered(QAction *action);

    68     void hovered(QAction *action);

    69 

    70 private:

    71     QAction *makeAction(const QModelIndex &index);

    72     int m_maxRows;

    73     int m_firstSeparator;

    74     int m_maxWidth;

    75     int m_hoverRole;

    76     int m_separatorRole;

    77     QAbstractItemModel *m_model;

    78     QPersistentModelIndex m_root;

    79 };

    80 

    81 #endif // MODELMENU_H

    82