view widgets/LayerTree.h @ 349:369a197737c7

* Various fixes to object lifetime management, particularly in the spectrum
  layer and for notification of main model deletion.
  The main purpose of this is to improve the behaviour of the spectrum, but I
  think it may also help with #1840922 Various crashes in Layer Summary window.

/* -*- 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 Chris Cannam.
    
    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 _LAYER_TREE_H_
#define _LAYER_TREE_H_

#include <QAbstractItemModel>

#include <set>

class PaneStack;
class View;
class Pane;
class Layer;
class PropertyContainer;
class Model;

class ModelDataModel : public QAbstractItemModel
{
    Q_OBJECT

public:
    ModelDataModel(PaneStack *stack, bool waveModelsOnly, QObject *parent = 0);
    virtual ~ModelDataModel();

    QVariant data(const QModelIndex &index, int role) const;

    bool setData(const QModelIndex &index, const QVariant &value, int role);

    Qt::ItemFlags flags(const QModelIndex &index) const;

    QVariant headerData(int section, Qt::Orientation orientation,
                        int role = Qt::DisplayRole) const;

    QModelIndex index(int row, int column,
                      const QModelIndex &parent = QModelIndex()) const;

    QModelIndex parent(const QModelIndex &index) const;

    int rowCount(const QModelIndex &parent = QModelIndex()) const;
    int columnCount(const QModelIndex &parent = QModelIndex()) const;

protected slots:
    void paneAdded();
    void paneDeleted();
    void propertyContainerAdded(PropertyContainer *);
    void propertyContainerRemoved(PropertyContainer *);
    void propertyContainerSelected(PropertyContainer *);
    void propertyContainerPropertyChanged(PropertyContainer *);
    void playParametersAudibilityChanged(bool);
    void paneLayerModelChanged();
    void rebuildModelSet();

protected:
    PaneStack *m_stack;
    bool m_waveModelsOnly;
    int m_modelTypeColumn;
    int m_modelNameColumn;
    int m_modelMakerColumn;
    int m_modelSourceColumn;
    int m_columnCount;

    std::set<Model *> m_models;
};

class LayerTreeModel : public QAbstractItemModel
{
    Q_OBJECT

public:
    LayerTreeModel(PaneStack *stack, QObject *parent = 0);
    virtual ~LayerTreeModel();

    QVariant data(const QModelIndex &index, int role) const;

    bool setData(const QModelIndex &index, const QVariant &value, int role);

    Qt::ItemFlags flags(const QModelIndex &index) const;

    QVariant headerData(int section, Qt::Orientation orientation,
                        int role = Qt::DisplayRole) const;

    QModelIndex index(int row, int column,
                      const QModelIndex &parent = QModelIndex()) const;

    QModelIndex parent(const QModelIndex &index) const;

    int rowCount(const QModelIndex &parent = QModelIndex()) const;
    int columnCount(const QModelIndex &parent = QModelIndex()) const;

protected slots:
    void paneAdded();
    void paneAboutToBeDeleted(Pane *);
    void propertyContainerAdded(PropertyContainer *);
    void propertyContainerRemoved(PropertyContainer *);
    void propertyContainerSelected(PropertyContainer *);
    void propertyContainerPropertyChanged(PropertyContainer *);
    void paneLayerModelChanged();
    void playParametersAudibilityChanged(bool);

protected:
    PaneStack *m_stack;
    std::set<QObject *> m_deletedPanes;
    int m_layerNameColumn;
    int m_layerVisibleColumn;
    int m_layerPlayedColumn;
    int m_modelNameColumn;
    int m_columnCount;
};

#endif