1// Copyright (C) 2011 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Stephen Kelly <stephen.kelly@kdab.com>
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3// Qt-Security score:significant reason:default
4
5#include "qidentityproxymodel.h"
6#include "qidentityproxymodel_p.h"
7#include "qitemselectionmodel.h"
8#include <private/qabstractproxymodel_p.h>
9
10QT_BEGIN_NAMESPACE
11
12QIdentityProxyModelPrivate::~QIdentityProxyModelPrivate()
13 = default;
14
15/*!
16 \since 4.8
17 \class QIdentityProxyModel
18 \inmodule QtCore
19 \brief The QIdentityProxyModel class proxies its source model unmodified.
20
21 \ingroup model-view
22
23 QIdentityProxyModel can be used to forward the structure of a source model exactly, with no sorting, filtering or other transformation.
24 This is similar in concept to an identity matrix where A.I = A.
25
26 Because it does no sorting or filtering, this class is most suitable to proxy models which transform the data() of the source model.
27 For example, a proxy model could be created to define the font used, or the background colour, or the tooltip etc. This removes the
28 need to implement all data handling in the same class that creates the structure of the model, and can also be used to create
29 re-usable components.
30
31 This also provides a way to change the data in the case where a source model is supplied by a third party which cannot be modified.
32
33 \snippet code/src_gui_itemviews_qidentityproxymodel.cpp 0
34
35 \sa QAbstractProxyModel, {Model/View Programming}, QAbstractItemModel
36
37*/
38
39/*!
40 Constructs an identity model with the given \a parent.
41*/
42QIdentityProxyModel::QIdentityProxyModel(QObject* parent)
43 : QAbstractProxyModel(*new QIdentityProxyModelPrivate, parent)
44{
45
46}
47
48/*!
49 \internal
50 */
51QIdentityProxyModel::QIdentityProxyModel(QIdentityProxyModelPrivate &dd, QObject* parent)
52 : QAbstractProxyModel(dd, parent)
53{
54
55}
56
57/*!
58 Destroys this identity model.
59*/
60QIdentityProxyModel::~QIdentityProxyModel()
61{
62}
63
64/*!
65 \reimp
66 */
67int QIdentityProxyModel::columnCount(const QModelIndex& parent) const
68{
69 Q_ASSERT(parent.isValid() ? parent.model() == this : true);
70 Q_D(const QIdentityProxyModel);
71 return d->model->columnCount(parent: mapToSource(proxyIndex: parent));
72}
73
74/*!
75 \reimp
76 */
77bool QIdentityProxyModel::dropMimeData(const QMimeData* data, Qt::DropAction action, int row, int column, const QModelIndex& parent)
78{
79 Q_ASSERT(parent.isValid() ? parent.model() == this : true);
80 Q_D(QIdentityProxyModel);
81 return d->model->dropMimeData(data, action, row, column, parent: mapToSource(proxyIndex: parent));
82}
83
84/*!
85 \reimp
86 */
87QModelIndex QIdentityProxyModel::index(int row, int column, const QModelIndex& parent) const
88{
89 Q_ASSERT(parent.isValid() ? parent.model() == this : true);
90 Q_D(const QIdentityProxyModel);
91 const QModelIndex sourceParent = mapToSource(proxyIndex: parent);
92 const QModelIndex sourceIndex = d->model->index(row, column, parent: sourceParent);
93 return mapFromSource(sourceIndex);
94}
95
96/*!
97 \reimp
98 */
99QModelIndex QIdentityProxyModel::sibling(int row, int column, const QModelIndex &idx) const
100{
101 Q_D(const QIdentityProxyModel);
102 return mapFromSource(sourceIndex: d->model->sibling(row, column, idx: mapToSource(proxyIndex: idx)));
103}
104
105/*!
106 \reimp
107 */
108bool QIdentityProxyModel::insertColumns(int column, int count, const QModelIndex& parent)
109{
110 Q_ASSERT(parent.isValid() ? parent.model() == this : true);
111 Q_D(QIdentityProxyModel);
112 return d->model->insertColumns(column, count, parent: mapToSource(proxyIndex: parent));
113}
114
115/*!
116 \reimp
117 */
118bool QIdentityProxyModel::insertRows(int row, int count, const QModelIndex& parent)
119{
120 Q_ASSERT(parent.isValid() ? parent.model() == this : true);
121 Q_D(QIdentityProxyModel);
122 return d->model->insertRows(row, count, parent: mapToSource(proxyIndex: parent));
123}
124
125/*!
126 \reimp
127 */
128QModelIndex QIdentityProxyModel::mapFromSource(const QModelIndex& sourceIndex) const
129{
130 Q_D(const QIdentityProxyModel);
131 if (!d->model || !sourceIndex.isValid())
132 return QModelIndex();
133
134 Q_ASSERT(sourceIndex.model() == d->model);
135 return createIndex(arow: sourceIndex.row(), acolumn: sourceIndex.column(), adata: sourceIndex.internalPointer());
136}
137
138/*!
139 \reimp
140 */
141QItemSelection QIdentityProxyModel::mapSelectionFromSource(const QItemSelection& selection) const
142{
143 Q_D(const QIdentityProxyModel);
144 QItemSelection proxySelection;
145
146 if (!d->model)
147 return proxySelection;
148
149 QItemSelection::const_iterator it = selection.constBegin();
150 const QItemSelection::const_iterator end = selection.constEnd();
151 proxySelection.reserve(asize: selection.size());
152 for ( ; it != end; ++it) {
153 Q_ASSERT(it->model() == d->model);
154 const QItemSelectionRange range(mapFromSource(sourceIndex: it->topLeft()), mapFromSource(sourceIndex: it->bottomRight()));
155 proxySelection.append(t: range);
156 }
157
158 return proxySelection;
159}
160
161/*!
162 \reimp
163 */
164QItemSelection QIdentityProxyModel::mapSelectionToSource(const QItemSelection& selection) const
165{
166 Q_D(const QIdentityProxyModel);
167 QItemSelection sourceSelection;
168
169 if (!d->model)
170 return sourceSelection;
171
172 QItemSelection::const_iterator it = selection.constBegin();
173 const QItemSelection::const_iterator end = selection.constEnd();
174 sourceSelection.reserve(asize: selection.size());
175 for ( ; it != end; ++it) {
176 Q_ASSERT(it->model() == this);
177 const QItemSelectionRange range(mapToSource(proxyIndex: it->topLeft()), mapToSource(proxyIndex: it->bottomRight()));
178 sourceSelection.append(t: range);
179 }
180
181 return sourceSelection;
182}
183
184/*!
185 \reimp
186 */
187QModelIndex QIdentityProxyModel::mapToSource(const QModelIndex& proxyIndex) const
188{
189 Q_D(const QIdentityProxyModel);
190 if (!d->model || !proxyIndex.isValid())
191 return QModelIndex();
192 Q_ASSERT(proxyIndex.model() == this);
193 return createSourceIndex(row: proxyIndex.row(), col: proxyIndex.column(), internalPtr: proxyIndex.internalPointer());
194}
195
196/*!
197 \reimp
198 */
199QModelIndexList QIdentityProxyModel::match(const QModelIndex& start, int role, const QVariant& value, int hits, Qt::MatchFlags flags) const
200{
201 return QAbstractProxyModel::match(start, role, value, hits, flags);
202}
203
204/*!
205 \reimp
206 */
207QModelIndex QIdentityProxyModel::parent(const QModelIndex& child) const
208{
209 Q_ASSERT(child.isValid() ? child.model() == this : true);
210 const QModelIndex sourceIndex = mapToSource(proxyIndex: child);
211 const QModelIndex sourceParent = sourceIndex.parent();
212 return mapFromSource(sourceIndex: sourceParent);
213}
214
215/*!
216 \reimp
217 */
218bool QIdentityProxyModel::removeColumns(int column, int count, const QModelIndex& parent)
219{
220 Q_ASSERT(parent.isValid() ? parent.model() == this : true);
221 Q_D(QIdentityProxyModel);
222 return d->model->removeColumns(column, count, parent: mapToSource(proxyIndex: parent));
223}
224
225/*!
226 \reimp
227 */
228bool QIdentityProxyModel::removeRows(int row, int count, const QModelIndex& parent)
229{
230 Q_ASSERT(parent.isValid() ? parent.model() == this : true);
231 Q_D(QIdentityProxyModel);
232 return d->model->removeRows(row, count, parent: mapToSource(proxyIndex: parent));
233}
234
235/*!
236 \reimp
237 \since 5.15
238 */
239bool QIdentityProxyModel::moveRows(const QModelIndex &sourceParent, int sourceRow, int count, const QModelIndex &destinationParent, int destinationChild)
240{
241 Q_ASSERT(sourceParent.isValid() ? sourceParent.model() == this : true);
242 Q_ASSERT(destinationParent.isValid() ? destinationParent.model() == this : true);
243 Q_D(QIdentityProxyModel);
244 return d->model->moveRows(sourceParent: mapToSource(proxyIndex: sourceParent), sourceRow, count, destinationParent: mapToSource(proxyIndex: destinationParent), destinationChild);
245}
246
247/*!
248 \reimp
249 \since 5.15
250 */
251bool QIdentityProxyModel::moveColumns(const QModelIndex &sourceParent, int sourceColumn, int count, const QModelIndex &destinationParent, int destinationChild)
252{
253 Q_ASSERT(sourceParent.isValid() ? sourceParent.model() == this : true);
254 Q_ASSERT(destinationParent.isValid() ? destinationParent.model() == this : true);
255 Q_D(QIdentityProxyModel);
256 return d->model->moveColumns(sourceParent: mapToSource(proxyIndex: sourceParent), sourceColumn, count, destinationParent: mapToSource(proxyIndex: destinationParent), destinationChild);
257}
258
259/*!
260 \reimp
261 */
262int QIdentityProxyModel::rowCount(const QModelIndex& parent) const
263{
264 Q_ASSERT(parent.isValid() ? parent.model() == this : true);
265 Q_D(const QIdentityProxyModel);
266 return d->model->rowCount(parent: mapToSource(proxyIndex: parent));
267}
268
269/*!
270 \reimp
271 */
272QVariant QIdentityProxyModel::headerData(int section, Qt::Orientation orientation, int role) const
273{
274 Q_D(const QIdentityProxyModel);
275 return d->model->headerData(section, orientation, role);
276}
277
278/*!
279 \reimp
280 */
281void QIdentityProxyModel::setSourceModel(QAbstractItemModel* newSourceModel)
282{
283 Q_D(QIdentityProxyModel);
284
285 if (newSourceModel == d->model)
286 return;
287
288 beginResetModel();
289
290 // Call QObject::disconnect() unconditionally, if there is an existing source
291 // model, it's disconnected, and if there isn't, then calling disconnect() on
292 // a default-constructed Connection does nothing
293 for (const auto &c : d->m_sourceModelConnections)
294 QObject::disconnect(c);
295
296 QAbstractProxyModel::setSourceModel(newSourceModel);
297
298 if (sourceModel()) {
299 auto *m = sourceModel();
300 d->m_sourceModelConnections = {
301 QObjectPrivate::connect(sender: m, signal: &QAbstractItemModel::rowsAboutToBeInserted, receiverPrivate: d,
302 slot: &QIdentityProxyModelPrivate::sourceRowsAboutToBeInserted),
303 QObjectPrivate::connect(sender: m, signal: &QAbstractItemModel::rowsInserted, receiverPrivate: d,
304 slot: &QIdentityProxyModelPrivate::sourceRowsInserted),
305 QObjectPrivate::connect(sender: m, signal: &QAbstractItemModel::rowsAboutToBeRemoved, receiverPrivate: d,
306 slot: &QIdentityProxyModelPrivate::sourceRowsAboutToBeRemoved),
307 QObjectPrivate::connect(sender: m, signal: &QAbstractItemModel::rowsRemoved, receiverPrivate: d,
308 slot: &QIdentityProxyModelPrivate::sourceRowsRemoved),
309 QObjectPrivate::connect(sender: m, signal: &QAbstractItemModel::rowsAboutToBeMoved, receiverPrivate: d,
310 slot: &QIdentityProxyModelPrivate::sourceRowsAboutToBeMoved),
311 QObjectPrivate::connect(sender: m, signal: &QAbstractItemModel::rowsMoved, receiverPrivate: d,
312 slot: &QIdentityProxyModelPrivate::sourceRowsMoved),
313 QObjectPrivate::connect(sender: m, signal: &QAbstractItemModel::columnsAboutToBeInserted, receiverPrivate: d,
314 slot: &QIdentityProxyModelPrivate::sourceColumnsAboutToBeInserted),
315 QObjectPrivate::connect(sender: m, signal: &QAbstractItemModel::columnsInserted, receiverPrivate: d,
316 slot: &QIdentityProxyModelPrivate::sourceColumnsInserted),
317 QObjectPrivate::connect(sender: m, signal: &QAbstractItemModel::columnsAboutToBeRemoved, receiverPrivate: d,
318 slot: &QIdentityProxyModelPrivate::sourceColumnsAboutToBeRemoved),
319 QObjectPrivate::connect(sender: m, signal: &QAbstractItemModel::columnsRemoved, receiverPrivate: d,
320 slot: &QIdentityProxyModelPrivate::sourceColumnsRemoved),
321 QObjectPrivate::connect(sender: m, signal: &QAbstractItemModel::columnsAboutToBeMoved, receiverPrivate: d,
322 slot: &QIdentityProxyModelPrivate::sourceColumnsAboutToBeMoved),
323 QObjectPrivate::connect(sender: m, signal: &QAbstractItemModel::columnsMoved, receiverPrivate: d,
324 slot: &QIdentityProxyModelPrivate::sourceColumnsMoved),
325 QObjectPrivate::connect(sender: m, signal: &QAbstractItemModel::modelAboutToBeReset, receiverPrivate: d,
326 slot: &QIdentityProxyModelPrivate::sourceModelAboutToBeReset),
327 QObjectPrivate::connect(sender: m, signal: &QAbstractItemModel::modelReset, receiverPrivate: d,
328 slot: &QIdentityProxyModelPrivate::sourceModelReset),
329 QObjectPrivate::connect(sender: m, signal: &QAbstractItemModel::headerDataChanged, receiverPrivate: d,
330 slot: &QIdentityProxyModelPrivate::sourceHeaderDataChanged),
331 };
332
333 if (d->m_handleDataChanges) {
334 d->m_sourceModelConnections.emplace_back(
335 args: QObjectPrivate::connect(sender: m, signal: &QAbstractItemModel::dataChanged, receiverPrivate: d,
336 slot: &QIdentityProxyModelPrivate::sourceDataChanged));
337 }
338 if (d->m_handleLayoutChanges) {
339 d->m_sourceModelConnections.emplace_back(
340 args: QObjectPrivate::connect(sender: m, signal: &QAbstractItemModel::layoutAboutToBeChanged, receiverPrivate: d,
341 slot: &QIdentityProxyModelPrivate::sourceLayoutAboutToBeChanged));
342 d->m_sourceModelConnections.emplace_back(
343 args: QObjectPrivate::connect(sender: m, signal: &QAbstractItemModel::layoutChanged, receiverPrivate: d,
344 slot: &QIdentityProxyModelPrivate::sourceLayoutChanged));
345 }
346 }
347
348 endResetModel();
349}
350
351/*!
352 \since 6.8
353
354 If \a b is \c true, this proxy model will handle the source model layout
355 changes (by connecting to \c QAbstractItemModel::layoutAboutToBeChanged
356 and \c QAbstractItemModel::layoutChanged signals).
357
358 The default is for this proxy model to handle the source model layout
359 changes.
360
361 In sub-classes of QIdentityProxyModel, it may be useful to set this to
362 \c false if you need to specially handle the source model layout changes.
363
364 \note Calling this method will only have an effect after calling setSourceModel().
365*/
366void QIdentityProxyModel::setHandleSourceLayoutChanges(bool b)
367{
368 d_func()->m_handleLayoutChanges = b;
369}
370
371/*!
372 \since 6.8
373
374 Returns \c true if this proxy model handles the source model layout
375 changes, otherwise returns \c false.
376*/
377bool QIdentityProxyModel::handleSourceLayoutChanges() const
378{
379 return d_func()->m_handleLayoutChanges;
380}
381
382/*!
383 \since 6.8
384
385 If \a b is \c true, this proxy model will handle the source model data
386 changes (by connecting to \c QAbstractItemModel::dataChanged signal).
387
388 The default is for this proxy model to handle the source model data
389 changes.
390
391 In sub-classes of QIdentityProxyModel, it may be useful to set this to
392 \c false if you need to specially handle the source model data changes.
393
394 \note Calling this method will only have an effect after calling setSourceModel().
395*/
396void QIdentityProxyModel::setHandleSourceDataChanges(bool b)
397{
398 d_func()->m_handleDataChanges = b;
399}
400
401/*!
402 \since 6.8
403
404 Returns \c true if this proxy model handles the source model data
405 changes, otherwise returns \c false.
406*/
407bool QIdentityProxyModel::handleSourceDataChanges() const
408{
409 return d_func()->m_handleDataChanges;
410}
411
412void QIdentityProxyModelPrivate::sourceColumnsAboutToBeInserted(const QModelIndex &parent, int start, int end)
413{
414 Q_ASSERT(parent.isValid() ? parent.model() == model : true);
415 Q_Q(QIdentityProxyModel);
416 q->beginInsertColumns(parent: q->mapFromSource(sourceIndex: parent), first: start, last: end);
417}
418
419void QIdentityProxyModelPrivate::sourceColumnsAboutToBeMoved(const QModelIndex &sourceParent,
420 int sourceStart, int sourceEnd,
421 const QModelIndex &destParent,
422 int dest)
423{
424 Q_ASSERT(sourceParent.isValid() ? sourceParent.model() == model : true);
425 Q_ASSERT(destParent.isValid() ? destParent.model() == model : true);
426 Q_Q(QIdentityProxyModel);
427 q->beginMoveColumns(sourceParent: q->mapFromSource(sourceIndex: sourceParent), sourceFirst: sourceStart, sourceLast: sourceEnd, destinationParent: q->mapFromSource(sourceIndex: destParent), destinationColumn: dest);
428}
429
430void QIdentityProxyModelPrivate::sourceColumnsAboutToBeRemoved(const QModelIndex &parent, int start, int end)
431{
432 Q_ASSERT(parent.isValid() ? parent.model() == model : true);
433 Q_Q(QIdentityProxyModel);
434 q->beginRemoveColumns(parent: q->mapFromSource(sourceIndex: parent), first: start, last: end);
435}
436
437void QIdentityProxyModelPrivate::sourceColumnsInserted(const QModelIndex &parent, int start, int end)
438{
439 Q_ASSERT(parent.isValid() ? parent.model() == model : true);
440 Q_Q(QIdentityProxyModel);
441 Q_UNUSED(parent);
442 Q_UNUSED(start);
443 Q_UNUSED(end);
444 q->endInsertColumns();
445}
446
447void QIdentityProxyModelPrivate::sourceColumnsMoved(const QModelIndex &sourceParent,
448 int sourceStart, int sourceEnd,
449 const QModelIndex &destParent, int dest)
450{
451 Q_ASSERT(sourceParent.isValid() ? sourceParent.model() == model : true);
452 Q_ASSERT(destParent.isValid() ? destParent.model() == model : true);
453 Q_Q(QIdentityProxyModel);
454 Q_UNUSED(sourceParent);
455 Q_UNUSED(sourceStart);
456 Q_UNUSED(sourceEnd);
457 Q_UNUSED(destParent);
458 Q_UNUSED(dest);
459 q->endMoveColumns();
460}
461
462void QIdentityProxyModelPrivate::sourceColumnsRemoved(const QModelIndex &parent, int start, int end)
463{
464 Q_ASSERT(parent.isValid() ? parent.model() == model : true);
465 Q_Q(QIdentityProxyModel);
466 Q_UNUSED(parent);
467 Q_UNUSED(start);
468 Q_UNUSED(end);
469 q->endRemoveColumns();
470}
471
472void QIdentityProxyModelPrivate::sourceDataChanged(const QModelIndex &topLeft,
473 const QModelIndex &bottomRight,
474 const QList<int> &roles)
475{
476 Q_ASSERT(topLeft.isValid() ? topLeft.model() == model : true);
477 Q_ASSERT(bottomRight.isValid() ? bottomRight.model() == model : true);
478 Q_Q(QIdentityProxyModel);
479 emit q->dataChanged(topLeft: q->mapFromSource(sourceIndex: topLeft), bottomRight: q->mapFromSource(sourceIndex: bottomRight), roles);
480}
481
482void QIdentityProxyModelPrivate::sourceHeaderDataChanged(Qt::Orientation orientation, int first,
483 int last)
484{
485 Q_Q(QIdentityProxyModel);
486 emit q->headerDataChanged(orientation, first, last);
487}
488
489void QIdentityProxyModelPrivate::sourceLayoutAboutToBeChanged(
490 const QList<QPersistentModelIndex> &sourceParents, QAbstractItemModel::LayoutChangeHint hint)
491{
492 Q_Q(QIdentityProxyModel);
493
494 QList<QPersistentModelIndex> parents;
495 parents.reserve(asize: sourceParents.size());
496 for (const QPersistentModelIndex &parent : sourceParents) {
497 if (!parent.isValid()) {
498 parents << QPersistentModelIndex();
499 continue;
500 }
501 const QModelIndex mappedParent = q->mapFromSource(sourceIndex: parent);
502 Q_ASSERT(mappedParent.isValid());
503 parents << mappedParent;
504 }
505
506 emit q->layoutAboutToBeChanged(parents, hint);
507
508 const auto proxyPersistentIndexes = q->persistentIndexList();
509 for (const QModelIndex &proxyPersistentIndex : proxyPersistentIndexes) {
510 proxyIndexes << proxyPersistentIndex;
511 Q_ASSERT(proxyPersistentIndex.isValid());
512 const QPersistentModelIndex srcPersistentIndex = q->mapToSource(proxyIndex: proxyPersistentIndex);
513 Q_ASSERT(srcPersistentIndex.isValid());
514 layoutChangePersistentIndexes << srcPersistentIndex;
515 }
516}
517
518void QIdentityProxyModelPrivate::sourceLayoutChanged(
519 const QList<QPersistentModelIndex> &sourceParents, QAbstractItemModel::LayoutChangeHint hint)
520{
521 Q_Q(QIdentityProxyModel);
522
523 for (int i = 0; i < proxyIndexes.size(); ++i) {
524 q->changePersistentIndex(from: proxyIndexes.at(i), to: q->mapFromSource(sourceIndex: layoutChangePersistentIndexes.at(i)));
525 }
526
527 layoutChangePersistentIndexes.clear();
528 proxyIndexes.clear();
529
530 QList<QPersistentModelIndex> parents;
531 parents.reserve(asize: sourceParents.size());
532 for (const QPersistentModelIndex &parent : sourceParents) {
533 if (!parent.isValid()) {
534 parents << QPersistentModelIndex();
535 continue;
536 }
537 const QModelIndex mappedParent = q->mapFromSource(sourceIndex: parent);
538 Q_ASSERT(mappedParent.isValid());
539 parents << mappedParent;
540 }
541
542 emit q->layoutChanged(parents, hint);
543}
544
545void QIdentityProxyModelPrivate::sourceModelAboutToBeReset()
546{
547 Q_Q(QIdentityProxyModel);
548 q->beginResetModel();
549}
550
551void QIdentityProxyModelPrivate::sourceModelReset()
552{
553 Q_Q(QIdentityProxyModel);
554 q->endResetModel();
555}
556
557void QIdentityProxyModelPrivate::sourceRowsAboutToBeInserted(const QModelIndex &parent, int start,
558 int end)
559{
560 Q_ASSERT(parent.isValid() ? parent.model() == model : true);
561 Q_Q(QIdentityProxyModel);
562 q->beginInsertRows(parent: q->mapFromSource(sourceIndex: parent), first: start, last: end);
563}
564
565void QIdentityProxyModelPrivate::sourceRowsAboutToBeMoved(const QModelIndex &sourceParent,
566 int sourceStart, int sourceEnd,
567 const QModelIndex &destParent, int dest)
568{
569 Q_ASSERT(sourceParent.isValid() ? sourceParent.model() == model : true);
570 Q_ASSERT(destParent.isValid() ? destParent.model() == model : true);
571 Q_Q(QIdentityProxyModel);
572 q->beginMoveRows(sourceParent: q->mapFromSource(sourceIndex: sourceParent), sourceFirst: sourceStart, sourceLast: sourceEnd, destinationParent: q->mapFromSource(sourceIndex: destParent), destinationRow: dest);
573}
574
575void QIdentityProxyModelPrivate::sourceRowsAboutToBeRemoved(const QModelIndex &parent, int start,
576 int end)
577{
578 Q_ASSERT(parent.isValid() ? parent.model() == model : true);
579 Q_Q(QIdentityProxyModel);
580 q->beginRemoveRows(parent: q->mapFromSource(sourceIndex: parent), first: start, last: end);
581}
582
583void QIdentityProxyModelPrivate::sourceRowsInserted(const QModelIndex &parent, int start, int end)
584{
585 Q_ASSERT(parent.isValid() ? parent.model() == model : true);
586 Q_Q(QIdentityProxyModel);
587 Q_UNUSED(parent);
588 Q_UNUSED(start);
589 Q_UNUSED(end);
590 q->endInsertRows();
591}
592
593void QIdentityProxyModelPrivate::sourceRowsMoved(const QModelIndex &sourceParent, int sourceStart,
594 int sourceEnd, const QModelIndex &destParent,
595 int dest)
596{
597 Q_ASSERT(sourceParent.isValid() ? sourceParent.model() == model : true);
598 Q_ASSERT(destParent.isValid() ? destParent.model() == model : true);
599 Q_Q(QIdentityProxyModel);
600 Q_UNUSED(sourceParent);
601 Q_UNUSED(sourceStart);
602 Q_UNUSED(sourceEnd);
603 Q_UNUSED(destParent);
604 Q_UNUSED(dest);
605 q->endMoveRows();
606}
607
608void QIdentityProxyModelPrivate::sourceRowsRemoved(const QModelIndex &parent, int start, int end)
609{
610 Q_ASSERT(parent.isValid() ? parent.model() == model : true);
611 Q_Q(QIdentityProxyModel);
612 Q_UNUSED(parent);
613 Q_UNUSED(start);
614 Q_UNUSED(end);
615 q->endRemoveRows();
616}
617
618QT_END_NAMESPACE
619
620#include "moc_qidentityproxymodel.cpp"
621

source code of qtbase/src/corelib/itemmodels/qidentityproxymodel.cpp