C++ QComboBox::setCompleter方法代码示例

void QuickEdit::PrefixDelegateSetup()
{
    GenericDelegate* delegate = new GenericDelegate(ui->tvEditor, false);
    delegate->widgetCreator = [&](QWidget * parent)
    {
        QStringList list;
        list << " " << "const " << "volatile ";
        QCompleter *completer = new QCompleter(list, parent);
        completer->setCaseSensitivity(Qt::CaseSensitive);


        QComboBox* box = new QComboBox(parent);
        QStringListModel* model = new QStringListModel;
        model->setStringList(list);
        box->setModel(model);
        box->setEditable(true);
        box->setCompleter(completer);
        return box;
    };
    delegate->dataAccessor = [](QWidget * editor, const QModelIndex & index)
    {
        QString value = index.model()->data(index, Qt::EditRole).toString();
        QComboBox *box = static_cast<QComboBox*>(editor);
        box->setCurrentText(value);
    };
    delegate->dataSetter = [](QWidget * editor,QAbstractItemModel* model, const QModelIndex &index)
    {
        QComboBox * box = static_cast<QComboBox*>(editor);
        QString value = box->currentText();
        model->setData(index, value, Qt::EditRole);
    };
    ui->tvEditor->setItemDelegateForColumn(columns.indexOf("prefix"), delegate);
}

void QuickEdit::TypeDelegateSetup()
{
    GenericDelegate* delegate = new GenericDelegate(ui->tvEditor, false);

    delegate->widgetCreator = [](QWidget* parent)
    {
        BrowserNodeList result;
        QStringList classes;
        BrowserClass::instances(result);
        result.full_names(classes);

        QStringList basics = GenerationSettings::basic_types();
        classes+=basics;
        QCompleter* completer = new QCompleter(classes, parent);
        completer->setCaseSensitivity(Qt::CaseSensitive);

        QComboBox* box = new QComboBox(parent);
        QStringListModel* model = new QStringListModel;
        model->setStringList(classes);
        box->setModel(model);
        box->setEditable(true);
        box->setCompleter(completer);
        return box;
    };

    delegate->dataAccessor = [](QWidget* editor, const QModelIndex& index)
    {
        QString value = index.model()->data(index, Qt::EditRole).toString();
        QComboBox* box = static_cast<QComboBox*>(editor);
        box->setCurrentText(value);
    };

    delegate->dataSetter = [](QWidget* editor, QAbstractItemModel* model, const QModelIndex& index)
    {
        QComboBox* box = static_cast<QComboBox*>(editor);
        QString value = box->currentText();
        model->setData(index, value, Qt::EditRole);
    };

    ui->tvEditor->setItemDelegateForColumn(columns.indexOf("type"), delegate);
}

void FinanceMgr::createToolbar()
{
	QToolBar* toolBar = addToolBar(QString::fromLocal8Bit("系统工具"));
	QAction* calcAction = new QAction(QIcon(tr(":/Icon/Resources/calculator.png")), QString::fromLocal8Bit("计算器"), this);
	toolBar->addAction(calcAction);
	connect(calcAction, SIGNAL(triggered()), this, SLOT(openCalc()));

	ui.toolBar->addWidget(new QLabel(QString::fromLocal8Bit("年月: "), this));
	QComboBox* yearMonth = new QComboBox(this);
	QStringList dateList;
	// find the most faraway month from the budget table
	Database_Result& dr = DatabaseHandler::instance()->getHandler()->from(BudgetTableName)->limit("1")->orderBy("budget_month ASC")->get();
	int currentYear = QDate::currentDate().year();
	QString strCurrentYear = QString("%1").arg(currentYear);
	int currentMonth = QDate::currentDate().month();
	QString strCurrentMonth = QString("%1").arg(currentMonth);
	QString strYM = QString("%1%2").arg(strCurrentYear, strCurrentMonth);
	
	QDate databaseDate = QDate::currentDate();
	if (dr.count() > 0)
	{
		Array record = *dr.resultArray().begin();
		databaseDate = QDate::fromString(record[budgetMonthColumnName].c_str(), Qt::ISODate);
	}
	// create the year month list from the database time to current time
	bool loop = true;
	int year, month;
	year = databaseDate.year();
	month = databaseDate.month();
	do 
	{
		QString strYear = QString("%1").arg(year);
		QString strMonth = QString("%1").arg(month);
		QString strYear2Month  = QString("%1%2").arg(strYear, strMonth);
		dateList << strYear2Month;

		month++;
		if (month > 12)
		{
			month = 1;
			year++;
		}

		// add more than 2 month to the list
		int monthCount1 = year * 12 + month;
		int monthCount2 = QDate::currentDate().year() * 12 + QDate::currentDate().month();

		if ((monthCount2 + 2) < monthCount1)
		{
			loop = false;
		}
	} while (loop);

	yearMonth->addItems(dateList);
	yearMonth->setEditable(true);
	QCompleter* ymCompleter = new QCompleter(dateList, this);
	yearMonth->setCompleter(ymCompleter);
	yearMonth->setEditText(strYM);

	ui.toolBar->addWidget(yearMonth);
	connect(yearMonth, SIGNAL(editTextChanged(const QString&)), this, SLOT(handleMonthChanged(const QString&)));
}