Akonadi

selectionproxymodel.cpp
1 /*
2  Copyright (c) 2009 Stephen Kelly <[email protected]>
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 #include "selectionproxymodel.h"
21 
22 #include "entitytreemodel.h"
23 
24 using namespace Akonadi;
25 
26 namespace Akonadi
27 {
28 
29 class SelectionProxyModelPrivate
30 {
31 public:
32  SelectionProxyModelPrivate(SelectionProxyModel *selectionProxyModel)
33  : q_ptr(selectionProxyModel)
34  {
36  const auto indexes = q->sourceRootIndexes();
37  for (const auto &rootIndex : indexes) {
38  rootIndexAdded(rootIndex);
39  }
40  }
41  ~SelectionProxyModelPrivate()
42  {
44  const auto indexes = q->sourceRootIndexes();
45  for (const auto &rootIndex : indexes) {
46  rootIndexAboutToBeRemoved(rootIndex);
47  }
48  }
49 
53  void rootIndexAdded(const QModelIndex &newRootIndex)
54  {
56  // newRootIndex is already in the sourceModel.
57  q->sourceModel()->setData(newRootIndex, QVariant(), EntityTreeModel::CollectionRefRole);
58  q->sourceModel()->fetchMore(newRootIndex);
59  }
60 
64  void rootIndexAboutToBeRemoved(const QModelIndex &removedRootIndex)
65  {
67  q->sourceModel()->setData(removedRootIndex, QVariant(), EntityTreeModel::CollectionDerefRole);
68  }
69 
70  Q_DECLARE_PUBLIC(SelectionProxyModel)
71  SelectionProxyModel *q_ptr;
72 };
73 
74 }
75 
77  : KSelectionProxyModel(selectionModel, parent)
78  , d_ptr(new SelectionProxyModelPrivate(this))
79 {
80  connect(this, SIGNAL(rootIndexAdded(QModelIndex)), SLOT(rootIndexAdded(QModelIndex))); // clazy:exclude=old-style-connect
81  connect(this, SIGNAL(rootIndexAboutToBeRemoved(QModelIndex)), SLOT(rootIndexAboutToBeRemoved(QModelIndex))); // clazy:exclude=old-style-connect
82 }
83 
84 SelectionProxyModel::~SelectionProxyModel()
85 {
86  delete d_ptr;
87 }
88 
89 #include "moc_selectionproxymodel.cpp"
A proxy model used to reference count selected Akonadi::Collection in a view.
Helper integration between Akonadi and Qt.
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