modelmenu.h Example File

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#ifndef MODELMENU_H #define MODELMENU_H #include <QtWidgets/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

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