C++ QListView::edit方法代码示例

void tst_QItemDelegate::uintEdit()
{
    QListView view;
    QStandardItemModel model;

    {
        QStandardItem *data=new QStandardItem;
        data->setEditable(true);
        data->setData(QVariant((uint)1), Qt::DisplayRole);
        model.setItem(0, 0, data);
    }
    {
        QStandardItem *data=new QStandardItem;
        data->setEditable(true);
        data->setData(QVariant((uint)1), Qt::DisplayRole);
        model.setItem(1, 0, data);
    }

    view.setModel(&model);
    view.setEditTriggers(QAbstractItemView::AllEditTriggers);

    const QModelIndex firstCell = model.index(0, 0);

    QCOMPARE(firstCell.data(Qt::DisplayRole).userType(), static_cast<int>(QMetaType::UInt));

    view.selectionModel()->setCurrentIndex(model.index(0, 0), QItemSelectionModel::Select);
    view.edit(firstCell);

    QSpinBox *sb = view.findChild<QSpinBox*>();
    QVERIFY(sb);

    sb->stepUp();

    // Select another index to trigger the end of editing.
    const QModelIndex secondCell = model.index(1, 0);
    view.selectionModel()->setCurrentIndex(secondCell, QItemSelectionModel::Select);

    QCOMPARE(firstCell.data(Qt::DisplayRole).userType(), static_cast<int>(QMetaType::UInt));
    QCOMPARE(firstCell.data(Qt::DisplayRole).toUInt(), static_cast<uint>(2));


    view.edit(secondCell);

    // The first spinbox is deleted with deleteLater, so it is still there.
    QList<QSpinBox*> sbList = view.findChildren<QSpinBox*>();
    QCOMPARE(sbList.size(), 2);

    sb = sbList.at(1);

    sb->stepDown(); // 1 -> 0
    sb->stepDown(); // 0 (no effect)
    sb->stepDown(); // 0 (no effect)

    // Select another index to trigger the end of editing.
    view.selectionModel()->setCurrentIndex(firstCell, QItemSelectionModel::Select);

    QCOMPARE(secondCell.data(Qt::DisplayRole).userType(), static_cast<int>(QMetaType::UInt));
    QCOMPARE(secondCell.data(Qt::DisplayRole).toUInt(), static_cast<uint>(0));
}

void tst_QItemDelegate::doubleEditorNegativeInput()
{
    QStandardItemModel model;

    QStandardItem *item = new QStandardItem;
    item->setData(10.0, Qt::DisplayRole);
    model.appendRow(item);

    QListView view;
    view.setModel(&model);
    view.show();

    QModelIndex index = model.index(0, 0);
    view.setCurrentIndex(index); // the editor will only selectAll on the current index
    view.edit(index);

    QList<QDoubleSpinBox*> editors = qFindChildren<QDoubleSpinBox *>(view.viewport());
    QCOMPARE(editors.count(), 1);

    QDoubleSpinBox *editor = editors.at(0);
    QCOMPARE(editor->value(), double(10));

    QTest::keyClick(editor, Qt::Key_Minus);
    QTest::keyClick(editor, Qt::Key_1);
    QTest::keyClick(editor, Qt::Key_0);
    QTest::keyClick(editor, Qt::Key_Comma); //support both , and . locales
    QTest::keyClick(editor, Qt::Key_Period);
    QTest::keyClick(editor, Qt::Key_0);
    QTest::keyClick(editor, Qt::Key_Enter);
    QApplication::processEvents();

    QCOMPARE(index.data().toString(), QString("-10"));
}

void tst_QItemDelegate::editorKeyPress()
{
    QFETCH(QString, initial);
    QFETCH(QString, expected);

    QStandardItemModel model;
    model.appendRow(new QStandardItem(initial));

    QListView view;
    view.setModel(&model);
    view.show();

    QModelIndex index = model.index(0, 0);
    view.setCurrentIndex(index); // the editor will only selectAll on the current index
    view.edit(index);

    QList<QLineEdit*> lineEditors = qFindChildren<QLineEdit *>(view.viewport());
    QCOMPARE(lineEditors.count(), 1);

    QLineEdit *editor = lineEditors.at(0);
    QCOMPARE(editor->selectedText(), initial);

    QTest::keyClicks(editor, expected);
    QTest::keyClick(editor, Qt::Key_Enter);
    QApplication::processEvents();

    QCOMPARE(index.data().toString(), expected);
}

void tst_QItemDelegate::task257859_finalizeEdit()
{
    QStandardItemModel model;
    model.appendRow(new QStandardItem());

    QListView view;
    view.setModel(&model);
    view.show();
    QApplication::setActiveWindow(&view);
    view.setFocus();
    QTest::qWait(30);

    QModelIndex index = model.index(0, 0);
    view.edit(index);
    QTest::qWait(30);

    QList<QLineEdit *> lineEditors = qFindChildren<QLineEdit *>(view.viewport());
    QCOMPARE(lineEditors.count(), 1);

    QPointer<QWidget> editor = lineEditors.at(0);
    QCOMPARE(editor->hasFocus(), true);

    QDialog dialog;
    QTimer::singleShot(500, &dialog, SLOT(close()));
    dialog.exec();
    QTRY_VERIFY(!editor);
}

void tst_QItemDelegate::enterKey()
{
    QFETCH(WidgetType, widget);
    QFETCH(int, key);
    QFETCH(bool, expectedFocus);

    QStandardItemModel model;
    model.appendRow(new QStandardItem());

    QListView view;
    view.setModel(&model);
    view.show();
    QApplication::setActiveWindow(&view);
    view.setFocus();
    QTest::qWait(30);

    struct TestDelegate : public QItemDelegate
    {
        WidgetType widgetType;
        virtual QWidget* createEditor(QWidget* parent, const QStyleOptionViewItem& /*option*/, const QModelIndex& /*index*/) const
        {
            QWidget *editor = 0;
            switch(widgetType) {
            case LineEdit:
                editor = new QLineEdit(parent);
                break;
            case TextEdit:
                editor = new QTextEdit(parent);
                break;
            case PlainTextEdit:
                editor = new QPlainTextEdit(parent);
                break;
            }
            editor->setObjectName(QString::fromLatin1("TheEditor"));
            return editor;
        }
    } delegate;

    delegate.widgetType = widget;

    view.setItemDelegate(&delegate);
    QModelIndex index = model.index(0, 0);
    view.setCurrentIndex(index); // the editor will only selectAll on the current index
    view.edit(index);
    QTest::qWait(30);

    QList<QWidget*> lineEditors = qFindChildren<QWidget *>(view.viewport(), QString::fromLatin1("TheEditor"));
    QCOMPARE(lineEditors.count(), 1);

    QPointer<QWidget> editor = lineEditors.at(0);
    QCOMPARE(editor->hasFocus(), true);

    QTest::keyClick(editor, Qt::Key(key));
    QApplication::processEvents();

    // The line edit has already been destroyed, so avoid that case.
    if (widget == TextEdit || widget == PlainTextEdit) {
        QVERIFY(!editor.isNull());
        QCOMPARE(editor && editor->hasFocus(), expectedFocus);
    }
}