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1/*
2 Copyright (c) 2016 Christian Mollekopf <mollekopf@kolabsystems.com>
3
4 This library is free software; you can redistribute it and/or modify it
5 under the terms of the GNU Library General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or (at your
7 option) any later version.
8
9 This library is distributed in the hope that it will be useful, but WITHOUT
10 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
12 License for more details.
13
14 You should have received a copy of the GNU Library General Public License
15 along with this library; see the file COPYING.LIB. If not, write to the
16 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17 02110-1301, USA.
18*/
19
20#pragma once
21
22#include <QObject>
23#include <QAbstractItemModel>
24#include <QVariant>
25
26/**
27 * A wrapper for a QAbstractItemModel to retrieve a value from a single index via property binding
28 *
29 * Assign a model that retrieves the index, set the property your interested in, and propery-bind "value".
30 */
31class Retriever : public QObject
32{
33 Q_OBJECT
34 Q_PROPERTY(QAbstractItemModel* model READ model WRITE setModel)
35 Q_PROPERTY(QString propertyName MEMBER mPropertyName)
36 Q_PROPERTY(QVariant value MEMBER mValue NOTIFY valueChanged)
37
38public:
39 explicit Retriever(QObject *parent = Q_NULLPTR);
40
41 QAbstractItemModel* model() const;
42 void setModel(QAbstractItemModel* model);
43
44signals:
45 void valueChanged();
46
47private slots:
48 void onRowsInserted(const QModelIndex &parent, int first, int last);
49 void onModelReset();
50
51private:
52 QString mPropertyName;
53 QVariant mValue;
54 QAbstractItemModel *mModel;
55};