C++ QStandardItem::sortChildren方法代码示例

void tst_QStandardItem::sortChildren()
{
    for (int x = 0; x < 2; ++x) {
        QStandardItemModel *model = new QStandardItemModel;
        QStandardItem *item = (x == 0) ? new QStandardItem : model->invisibleRootItem();
        QStandardItem *one = new QStandardItem;
        one->appendRow(new QStandardItem(QLatin1String("a")));
        one->appendRow(new QStandardItem(QLatin1String("b")));
        one->appendRow(new QStandardItem(QLatin1String("c")));
        QStandardItem *two = new QStandardItem;
        two->appendRow(new QStandardItem(QLatin1String("f")));
        two->appendRow(new QStandardItem(QLatin1String("d")));
        two->appendRow(new QStandardItem(QLatin1String("e")));
        item->appendRow(one);
        item->appendRow(two);
        
        QSignalSpy layoutAboutToBeChangedSpy(
            model, SIGNAL(layoutAboutToBeChanged()));
        QSignalSpy layoutChangedSpy(
            model, SIGNAL(layoutChanged()));

        one->sortChildren(0, Qt::DescendingOrder);
        // verify sorted
        QCOMPARE(one->child(0)->text(), QLatin1String("c"));
        QCOMPARE(one->child(1)->text(), QLatin1String("b"));
        QCOMPARE(one->child(2)->text(), QLatin1String("a"));
        // verify siblings unaffected
        QCOMPARE(two->child(0)->text(), QLatin1String("f"));
        QCOMPARE(two->child(1)->text(), QLatin1String("d"));
        QCOMPARE(two->child(2)->text(), QLatin1String("e"));
        
        two->sortChildren(0, Qt::AscendingOrder);
        // verify sorted
        QCOMPARE(two->child(0)->text(), QLatin1String("d"));
        QCOMPARE(two->child(1)->text(), QLatin1String("e"));
        QCOMPARE(two->child(2)->text(), QLatin1String("f"));
        // verify siblings unaffected
        QCOMPARE(one->child(0)->text(), QLatin1String("c"));
        QCOMPARE(one->child(1)->text(), QLatin1String("b"));
        QCOMPARE(one->child(2)->text(), QLatin1String("a"));
        
        item->sortChildren(0, Qt::AscendingOrder);
        // verify everything sorted
        QCOMPARE(one->child(0)->text(), QLatin1String("a"));
        QCOMPARE(one->child(1)->text(), QLatin1String("b"));
        QCOMPARE(one->child(2)->text(), QLatin1String("c"));
        QCOMPARE(two->child(0)->text(), QLatin1String("d"));
        QCOMPARE(two->child(1)->text(), QLatin1String("e"));
        QCOMPARE(two->child(2)->text(), QLatin1String("f"));

        QCOMPARE(layoutAboutToBeChangedSpy.count(), (x == 0) ? 0 : 3);
        QCOMPARE(layoutChangedSpy.count(), (x == 0) ? 0 : 3);

        if (x == 0)
            delete item;
        delete model;
    }
}

 void resetModel()
 {
     q->clear();
     QFont bold;
     bold.setBold(true);
     // Create one item for each day of week
     for(int day = Qt::Monday; day <= Qt::Sunday; ++day) {
         QStandardItem *dayItem = new QStandardItem(QDate::longDayName(day));
         dayItem->setFont(bold);
         dayItem->setData(day, WeekDayRole);
         // Add availabilities to items
         const QVector<DayAvailability> &avail = m_UserCalendar->availabilities(day);
         for(int availabilityId = 0; availabilityId < avail.count(); ++availabilityId) {
             for(int timeRangeId = 0; timeRangeId < avail.at(availabilityId).timeRangeCount(); ++timeRangeId) {
                 TimeRange range = avail.at(availabilityId).timeRangeAt(timeRangeId);
                 QStandardItem *time = new QStandardItem(tkTr(Trans::Constants::FROM_1_TO_2).arg(range.from.toString()).arg(range.to.toString()));
                 time->setData(day, WeekDayRole);
                 time->setData(range.from, HourFromRole);
                 time->setData(range.to, HourToRole);
                 time->setData(timeRangeId, TimeRangeIdRole);
                 time->setData(availabilityId, AvailIdRole);
                 time->setToolTip(time->text());
                 dayItem->appendRow(time);
             }
         }
         if (dayItem->rowCount() > 0) {
             dayItem->sortChildren(0);
         }
         q->invisibleRootItem()->appendRow(dayItem);
     }
 }

// private slot
void FilesWidget::addDocument(Document *document)
{
    Q_ASSERT(document != NULL);
    Q_ASSERT(document != DocumentManager::current());

    const Location &location = document->location();
    const QString &filePath = location.filePath("unnamed");
    const QString &directoryPath = location.directoryPath("unnamed");
    const QString &fileName = location.fileName("unnamed");

    // Find or create parent item
    const QModelIndexList &parents = m_model.match(m_model.index(0, 0, QModelIndex()), DirectoryPathRole,
                                                   directoryPath, 1, Qt::MatchExactly);
    QStandardItem *parent;

    if (parents.isEmpty()) {
        parent = new QStandardItem(QIcon(":/icons/16x16/folder.png"), directoryPath);

        parent->setToolTip(directoryPath);
        parent->setData(directoryPath, DirectoryPathRole);
        parent->setData(location.isEmpty() ? "" : directoryPath.toLower(), LowerCaseNameRole);

        m_model.appendRow(parent);
        m_model.sort(0);
    } else {
        parent = m_model.itemFromIndex(parents.first());
    }

    // Create child item
    QStandardItem *child = new QStandardItem(QIcon(":/icons/16x16/file.png"), fileName);

    child->setToolTip(filePath);
    child->setData(qVariantFromValue((void *)document), DocumentPointerRole);
    child->setData(fileName, FileNameRole);
    child->setData(location.isEmpty() ? "" : fileName.toLower(), LowerCaseNameRole);

    m_children.insert(document, child);

    parent->appendRow(child);
    parent->sortChildren(0);

    connect(document, &Document::locationChanged, this, &FilesWidget::updateLocationOfSender);
    connect(document, &Document::modificationChanged, this, &FilesWidget::updateModificationMarkerOfSender);

    // Apply current filter
    if (!filterAcceptsChild(child->index())) {
        m_treeFiles->setRowHidden(child->row(), parent->index(), true);

        if (parent->rowCount() == 1) {
            m_treeFiles->setRowHidden(parent->row(), m_model.invisibleRootItem()->index(), true);
        }
    }

    // Show modification marker, if necessary
    updateModificationMarker(document);
    updateParentItemMarkers(parent);
}

void TerminalWidget::tableView_sortIndicatorChanged(int logicalIndex, Qt::SortOrder order)
{
    CentralModel* centralModel = dynamic_cast<CentralModel*>(ui->tableView->model());
    if (!centralModel)
        return ;

    QModelIndex rootIndex = ui->tableView->rootIndex();
    if (!rootIndex.isValid())
        return ;

    QStandardItem* rootItem = centralModel->itemFromIndex(rootIndex);
    if (!rootItem)
        return ;

    rootItem->sortChildren(logicalIndex, order);
}

void HistoryContentsWidget::addEntry(const HistoryEntry &entry)
{
	if (entry.identifier < 0)
	{
		return;
	}

	QStandardItem *groupItem = NULL;

	for (int i = 0; i < m_model->rowCount(); ++i)
	{
		groupItem = m_model->item(i, 0);

		if (groupItem && (entry.time.date() >= groupItem->data(Qt::UserRole).toDate() || !groupItem->data(Qt::UserRole).toDate().isValid()))
		{
			break;
		}

		groupItem = NULL;
	}

	if (!groupItem)
	{
		return;
	}

	QList<QStandardItem*> entryItems;
	entryItems.append(new QStandardItem((entry.icon.isNull() ? Utils::getIcon(QLatin1String("text-html")) : entry.icon), entry.url.toString().replace(QLatin1String("%23"), QString(QLatin1Char('#')))));
	entryItems.append(new QStandardItem(entry.title.isEmpty() ? tr("(Untitled)") : entry.title));
	entryItems.append(new QStandardItem(entry.time.toString()));
	entryItems[0]->setData(entry.identifier, Qt::UserRole);

	groupItem->appendRow(entryItems);

	m_ui->historyView->setRowHidden(groupItem->row(), groupItem->index().parent(), false);

	if (sender())
	{
		groupItem->sortChildren(2, Qt::DescendingOrder);
	}

	if (!m_ui->filterLineEdit->text().isEmpty())
	{
		filterHistory(m_ui->filterLineEdit->text());
	}
}

void HistoryContentsWidget::populateEntries()
{
	const QDate date = QDate::currentDate();
	QList<QDate> dates;
	dates << date << date.addDays(-1) << date.addDays(-7) << date.addDays(-14) << date.addDays(-30) << date.addDays(-365);

	for (int i = 0; i < m_model->rowCount(); ++i)
	{
		m_ui->historyView->setRowHidden(i, m_model->invisibleRootItem()->index(), true);

		QStandardItem *groupItem = m_model->item(i, 0);

		if (groupItem)
		{
			groupItem->setData(dates.value(i, QDate()), Qt::UserRole);
			groupItem->removeRows(0, groupItem->rowCount());
		}
	}

	const QList<HistoryEntry> entries = HistoryManager::getEntries();

	for (int i = 0; i < entries.count(); ++i)
	{
		addEntry(entries.at(i));
	}

	for (int i = 0; i < m_model->rowCount(); ++i)
	{
		QStandardItem *groupItem = m_model->item(i, 0);

		if (groupItem)
		{
			groupItem->sortChildren(2, Qt::DescendingOrder);
		}
	}

	m_isLoading = false;

	emit loadingChanged(false);
}

void DayAvailabilityModel::addAvailability(const DayAvailability &availability)
{
    Q_ASSERT(d->m_UserCalendar);
    Q_ASSERT(IN_RANGE(availability.weekDay(), Qt::Monday, Qt::Sunday));

    d->m_UserCalendar->addAvailabilities(availability);

    // find the day item
    QStandardItem *dayItem = 0;
    for(int i = 0; i < invisibleRootItem()->rowCount(); ++i) {
        if (invisibleRootItem()->child(i)->data(WeekDayRole).toInt() == availability.weekDay()) {
            dayItem = invisibleRootItem()->child(i);
            break;
        }
    }

    // at this point there MUST be a valid dayItem. If not, something really bad happened.
    Q_ASSERT(dayItem);

    // delete the placeholder item, if exists
    if (dayItem->hasChildren() && dayItem->child(0)->data(AvailIdRole).toInt() == -1)
        dayItem->removeRow(0);

    // Insert the TimeRanges
    for(int i = 0; i < availability.timeRangeCount(); ++i) {
        TimeRange range = availability.timeRangeAt(i);
        QStandardItem *timeItem = new QStandardItem(tkTr(Trans::Constants::FROM_1_TO_2).arg(range.from.toString()).arg(range.to.toString()));
        timeItem->setData(availability.weekDay(), WeekDayRole);
        timeItem->setData(range.from, HourFromRole);
        timeItem->setData(range.to, HourToRole);
        timeItem->setToolTip(timeItem->text());
        dayItem->appendRow(timeItem);
    }
    dayItem->sortChildren(0);

}