diff options
Diffstat (limited to 'src/corelib/itemmodels/qitemselectionmodel.cpp')
| -rw-r--r-- | src/corelib/itemmodels/qitemselectionmodel.cpp | 166 |
1 files changed, 133 insertions, 33 deletions
diff --git a/src/corelib/itemmodels/qitemselectionmodel.cpp b/src/corelib/itemmodels/qitemselectionmodel.cpp index 5395fd5d09..47fcab9b24 100644 --- a/src/corelib/itemmodels/qitemselectionmodel.cpp +++ b/src/corelib/itemmodels/qitemselectionmodel.cpp @@ -1,7 +1,7 @@ /**************************************************************************** ** -** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/legal +** Copyright (C) 2015 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ ** ** This file is part of the QtGui module of the Qt Toolkit. ** @@ -10,9 +10,9 @@ ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and Digia. For licensing terms and -** conditions see http://qt.digia.com/licensing. For further information -** use the contact form at http://qt.digia.com/contact-us. +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser @@ -23,8 +23,8 @@ ** requirements will be met: https://www.gnu.org/licenses/lgpl.html and ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** -** In addition, as a special exception, Digia gives you certain additional -** rights. These rights are described in the Digia Qt LGPL Exception +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** ** $QT_END_LICENSE$ @@ -589,33 +589,51 @@ void QItemSelection::split(const QItemSelectionRange &range, } -void QItemSelectionModelPrivate::initModel(QAbstractItemModel *model) +void QItemSelectionModelPrivate::initModel(QAbstractItemModel *m) { - this->model = model; + struct Cx { + const char *signal; + const char *slot; + }; + static const Cx connections[] = { + { SIGNAL(rowsAboutToBeRemoved(QModelIndex,int,int)), + SLOT(_q_rowsAboutToBeRemoved(QModelIndex,int,int)) }, + { SIGNAL(columnsAboutToBeRemoved(QModelIndex,int,int)), + SLOT(_q_columnsAboutToBeRemoved(QModelIndex,int,int)) }, + { SIGNAL(rowsAboutToBeInserted(QModelIndex,int,int)), + SLOT(_q_rowsAboutToBeInserted(QModelIndex,int,int)) }, + { SIGNAL(columnsAboutToBeInserted(QModelIndex,int,int)), + SLOT(_q_columnsAboutToBeInserted(QModelIndex,int,int)) }, + { SIGNAL(rowsAboutToBeMoved(QModelIndex,int,int,QModelIndex,int)), + SLOT(_q_layoutAboutToBeChanged()) }, + { SIGNAL(columnsAboutToBeMoved(QModelIndex,int,int,QModelIndex,int)), + SLOT(_q_layoutAboutToBeChanged()) }, + { SIGNAL(rowsMoved(QModelIndex,int,int,QModelIndex,int)), + SLOT(_q_layoutChanged()) }, + { SIGNAL(columnsMoved(QModelIndex,int,int,QModelIndex,int)), + SLOT(_q_layoutChanged()) }, + { SIGNAL(layoutAboutToBeChanged(QList<QPersistentModelIndex>,QAbstractItemModel::LayoutChangeHint)), + SLOT(_q_layoutAboutToBeChanged(QList<QPersistentModelIndex>,QAbstractItemModel::LayoutChangeHint)) }, + { SIGNAL(layoutChanged(QList<QPersistentModelIndex>,QAbstractItemModel::LayoutChangeHint)), + SLOT(_q_layoutChanged(QList<QPersistentModelIndex>,QAbstractItemModel::LayoutChangeHint)) }, + { SIGNAL(modelReset()), + SLOT(reset()) }, + { 0, 0 } + }; + + if (model == m) + return; + + Q_Q(QItemSelectionModel); if (model) { - Q_Q(QItemSelectionModel); - QObject::connect(model, SIGNAL(rowsAboutToBeRemoved(QModelIndex,int,int)), - q, SLOT(_q_rowsAboutToBeRemoved(QModelIndex,int,int))); - QObject::connect(model, SIGNAL(columnsAboutToBeRemoved(QModelIndex,int,int)), - q, SLOT(_q_columnsAboutToBeRemoved(QModelIndex,int,int))); - QObject::connect(model, SIGNAL(rowsAboutToBeInserted(QModelIndex,int,int)), - q, SLOT(_q_rowsAboutToBeInserted(QModelIndex,int,int))); - QObject::connect(model, SIGNAL(columnsAboutToBeInserted(QModelIndex,int,int)), - q, SLOT(_q_columnsAboutToBeInserted(QModelIndex,int,int))); - QObject::connect(model, SIGNAL(rowsAboutToBeMoved(QModelIndex,int,int,QModelIndex,int)), - q, SLOT(_q_layoutAboutToBeChanged())); - QObject::connect(model, SIGNAL(columnsAboutToBeMoved(QModelIndex,int,int,QModelIndex,int)), - q, SLOT(_q_layoutAboutToBeChanged())); - QObject::connect(model, SIGNAL(rowsMoved(QModelIndex,int,int,QModelIndex,int)), - q, SLOT(_q_layoutChanged())); - QObject::connect(model, SIGNAL(columnsMoved(QModelIndex,int,int,QModelIndex,int)), - q, SLOT(_q_layoutChanged())); - QObject::connect(model, SIGNAL(layoutAboutToBeChanged(QList<QPersistentModelIndex>,QAbstractItemModel::LayoutChangeHint)), - q, SLOT(_q_layoutAboutToBeChanged(QList<QPersistentModelIndex>,QAbstractItemModel::LayoutChangeHint))); - QObject::connect(model, SIGNAL(layoutChanged(QList<QPersistentModelIndex>,QAbstractItemModel::LayoutChangeHint)), - q, SLOT(_q_layoutChanged(QList<QPersistentModelIndex>,QAbstractItemModel::LayoutChangeHint))); - QObject::connect(model, SIGNAL(modelReset()), - q, SLOT(reset())); + for (const Cx *cx = &connections[0]; cx->signal; cx++) + QObject::disconnect(model, cx->signal, q, cx->slot); + q->reset(); + } + model = m; + if (model) { + for (const Cx *cx = &connections[0]; cx->signal; cx++) + QObject::connect(model, cx->signal, q, cx->slot); } } @@ -1078,6 +1096,10 @@ void QItemSelectionModelPrivate::_q_layoutChanged(const QList<QPersistentModelIn selection. All functions operate on both layers; for example, \l {QTableWidget::selectedItems()}{selecteditems()} will return items from both layers. + \note Since 5.5, \l{QItemSelectionModel::model()}{model}, + \l{QItemSelectionModel::hasSelection()}{hasSelection}, and + \l{QItemSelectionModel::currentIndex()}{currentIndex} are meta-object properties. + \sa {Model/View Programming}, QAbstractItemModel, {Chart Example} */ @@ -1175,6 +1197,16 @@ void QItemSelectionModel::select(const QModelIndex &index, QItemSelectionModel:: */ /*! + \fn void QItemSelectionModel::modelChanged(QAbstractItemModel *model) + \since 5.5 + + This signal is emitted when the \a model is successfully set with setModel(). + + \sa model(), setModel() +*/ + + +/*! \enum QItemSelectionModel::SelectionFlag This enum describes the way the selection model will be updated. @@ -1205,6 +1237,10 @@ void QItemSelectionModel::select(const QModelIndex &index, QItemSelectionModel:: void QItemSelectionModel::select(const QItemSelection &selection, QItemSelectionModel::SelectionFlags command) { Q_D(QItemSelectionModel); + if (!d->model) { + qWarning("QItemSelectionModel: Selecting when no model has been set will result in a no-op."); + return; + } if (command == NoUpdate) return; @@ -1312,6 +1348,10 @@ void QItemSelectionModel::clearSelection() void QItemSelectionModel::setCurrentIndex(const QModelIndex &index, QItemSelectionModel::SelectionFlags command) { Q_D(QItemSelectionModel); + if (!d->model) { + qWarning("QItemSelectionModel: Setting the current index when no model has been set will result in a no-op."); + return; + } if (index == d->currentIndex) { if (command != NoUpdate) select(index, command); // select item @@ -1387,6 +1427,8 @@ bool QItemSelectionModel::isSelected(const QModelIndex &index) const bool QItemSelectionModel::isRowSelected(int row, const QModelIndex &parent) const { Q_D(const QItemSelectionModel); + if (!d->model) + return false; if (parent.isValid() && d->model != parent.model()) return false; @@ -1447,6 +1489,8 @@ bool QItemSelectionModel::isRowSelected(int row, const QModelIndex &parent) cons bool QItemSelectionModel::isColumnSelected(int column, const QModelIndex &parent) const { Q_D(const QItemSelectionModel); + if (!d->model) + return false; if (parent.isValid() && d->model != parent.model()) return false; @@ -1503,6 +1547,8 @@ bool QItemSelectionModel::isColumnSelected(int column, const QModelIndex &parent bool QItemSelectionModel::rowIntersectsSelection(int row, const QModelIndex &parent) const { Q_D(const QItemSelectionModel); + if (!d->model) + return false; if (parent.isValid() && d->model != parent.model()) return false; @@ -1535,6 +1581,8 @@ bool QItemSelectionModel::rowIntersectsSelection(int row, const QModelIndex &par bool QItemSelectionModel::columnIntersectsSelection(int column, const QModelIndex &parent) const { Q_D(const QItemSelectionModel); + if (!d->model) + return false; if (parent.isValid() && d->model != parent.model()) return false; @@ -1672,6 +1720,40 @@ const QItemSelection QItemSelectionModel::selection() const } /*! + \since 5.5 + + \property QItemSelectionModel::hasSelection + \internal +*/ +/*! + \since 5.5 + + \property QItemSelectionModel::currentIndex + \internal +*/ +/*! + \since 5.5 + + \property QItemSelectionModel::selectedIndexes +*/ +/*! + \since 5.5 + + \property QItemSelectionModel::model + \internal +*/ + +/*! + \since 5.5 + + Returns the item model operated on by the selection model. +*/ +QAbstractItemModel *QItemSelectionModel::model() +{ + return d_func()->model; +} + +/*! Returns the item model operated on by the selection model. */ const QAbstractItemModel *QItemSelectionModel::model() const @@ -1680,6 +1762,23 @@ const QAbstractItemModel *QItemSelectionModel::model() const } /*! + \since 5.5 + + Sets the model. The modelChanged() signal will be emitted. + + \sa model(), modelChanged() +*/ +void QItemSelectionModel::setModel(QAbstractItemModel *model) +{ + Q_D(QItemSelectionModel); + if (d->model == model) + return; + + d->initModel(model); + emit modelChanged(model); +} + +/*! Compares the two selections \a newSelection and \a oldSelection and emits selectionChanged() with the deselected and selected items. */ @@ -1755,9 +1854,10 @@ void QItemSelectionModel::emitSelectionChanged(const QItemSelection &newSelectio #ifndef QT_NO_DEBUG_STREAM QDebug operator<<(QDebug dbg, const QItemSelectionRange &range) { + QDebugStateSaver saver(dbg); dbg.nospace() << "QItemSelectionRange(" << range.topLeft() << ',' << range.bottomRight() << ')'; - return dbg.space(); + return dbg; } #endif |