blob: f3628039ad93afecc7e07fa5fc1f7853fb9a3269 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
/* cache_proxy_model.h
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later*/
#ifndef CACHE_PROXY_MODEL_H
#define CACHE_PROXY_MODEL_H
#include <config.h>
#include <QIdentityProxyModel>
#include <QStandardItemModel>
/**
* Caches any data read access to the source model, returning an older copy if
* the source model is invalidated.
*
* Only flat data is supported at the moment, tree models (with parents) are
* unsupported.
*/
class CacheProxyModel : public QIdentityProxyModel
{
Q_OBJECT
public:
CacheProxyModel(QObject *parent = 0);
QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
Qt::ItemFlags flags(const QModelIndex &index) const;
QVariant headerData(int section, Qt::Orientation orientation,
int role = Qt::DisplayRole) const;
int rowCount(const QModelIndex &parent = QModelIndex()) const;
int columnCount(const QModelIndex &parent = QModelIndex()) const;
void setSourceModel(QAbstractItemModel *newSourceModel);
private:
mutable QStandardItemModel cache;
bool hasModel() const { return sourceModel() != &cache; }
private slots:
void resetCacheModel();
};
#endif
|
