view widgets/SubdividingMenu.h @ 1534:bfd8b22fd67c

Fix #1904 Scrolling colour 3d plot does not always work when in View normalisation mode. We shouldn't imagine we've just invalidated the cache if the truth is that we've only just created the renderer

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2006 QMUL.
    
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/

#ifndef SV_SUBDIVIDING_MENU_H
#define SV_SUBDIVIDING_MENU_H

#include <QMenu>

#include <QString>
#include <set>
#include <map>

/**
 * A menu that divides its entries into submenus, alphabetically.  For
 * menus that may contain a very large or small number of named items
 * (e.g. plugins).
 *
 * The menu needs to be told, before any of the actions are added,
 * what the set of entry strings will be, so it can determine a
 * reasonable categorisation.  Do this by calling the setEntries()
 * method.  If it isn't practical to do this in advance, then add the
 * entries and call entriesAdded() afterwards instead. 
 */

class SubdividingMenu : public QMenu
{
    Q_OBJECT

public:
    SubdividingMenu(int lowerLimit = 0, int upperLimit = 0,
                    QWidget *parent = 0);
    SubdividingMenu(const QString &title, int lowerLimit = 0,
                    int upperLimit = 0, QWidget *parent = 0);
    virtual ~SubdividingMenu();

    void setEntries(const std::set<QString> &entries);
    void entriesAdded();

    // Action names and strings passed to addAction and addMenu must
    // appear in the set previously given to setEntries.  If you want
    // to use a different string, use the two-argument method and pass
    // the entry string (used to determine which submenu the action
    // ends up on) as the first argument.

    virtual void addAction(QAction *);
    virtual QAction *addAction(const QString &);
    virtual void addAction(const QString &entry, QAction *);
    
    virtual void addMenu(QMenu *);
    virtual QMenu *addMenu(const QString &);
    virtual void addMenu(const QString &entry, QMenu *);

protected:
    std::map<QString, QMenu *> m_nameToChunkMenuMap;

    int m_lowerLimit;
    int m_upperLimit;

    bool m_entriesSet;
    std::map<QString, QObject *> m_pendingEntries;
};

#endif