modelmenu.h
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- /****************************************************************************
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- ** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
- ** Contact: Qt Software Information (qt-info@nokia.com)
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- ** This file is part of the demonstration applications of the Qt Toolkit.
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- ** GNU General Public License Usage
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- #ifndef MODELMENU_H
- #define MODELMENU_H
- #include <QtGui/QMenu>
- #include <QtCore/QAbstractItemModel>
- // A QMenu that is dynamically populated from a QAbstractItemModel
- class ModelMenu : public QMenu
- {
- Q_OBJECT
- signals:
- void activated(const QModelIndex &index);
- void hovered(const QString &text);
- public:
- ModelMenu(QWidget *parent = 0);
- void setModel(QAbstractItemModel *model);
- QAbstractItemModel *model() const;
- void setMaxRows(int max);
- int maxRows() const;
- void setFirstSeparator(int offset);
- int firstSeparator() const;
- void setRootIndex(const QModelIndex &index);
- QModelIndex rootIndex() const;
- void setHoverRole(int role);
- int hoverRole() const;
- void setSeparatorRole(int role);
- int separatorRole() const;
- QAction *makeAction(const QIcon &icon, const QString &text, QObject *parent);
- protected:
- // add any actions before the tree, return true if any actions are added.
- virtual bool prePopulated();
- // add any actions after the tree
- virtual void postPopulated();
- // put all of the children of parent into menu up to max
- void createMenu(const QModelIndex &parent, int max, QMenu *parentMenu = 0, QMenu *menu = 0);
- private slots:
- void aboutToShow();
- void triggered(QAction *action);
- void hovered(QAction *action);
- private:
- QAction *makeAction(const QModelIndex &index);
- int m_maxRows;
- int m_firstSeparator;
- int m_maxWidth;
- int m_hoverRole;
- int m_separatorRole;
- QAbstractItemModel *m_model;
- QPersistentModelIndex m_root;
- };
- #endif // MODELMENU_H