C++ KLineEdit::installEventFilter方法代码示例

QWidget *MoneyDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &/* option */, const QModelIndex &/* index */) const
{
    KLineEdit *editor = new KLineEdit(parent);
    //TODO: validator
    editor->installEventFilter(const_cast<MoneyDelegate*>(this));
    return editor;
}

//.........这里部分代码省略.........
    m_layout->addWidget(m_buttonContainer);

    m_searchTerm = new KrunnerHistoryComboBox(false, this);

    KLineEdit *lineEdit = new KLineEdit(m_searchTerm);
    QAction *focusEdit = new QAction(this);
    focusEdit->setShortcut(Qt::Key_F6);

    connect(focusEdit, SIGNAL(triggered(bool)), this, SLOT(searchTermSetFocus()));
    addAction(focusEdit);

    // the order of these next few lines if very important.
    // QComboBox::setLineEdit sets the autoComplete flag on the lineedit,
    // and KComboBox::setAutoComplete resets the autocomplete mode! ugh!
    m_searchTerm->setLineEdit(lineEdit);

    m_completion = new KCompletion();
    lineEdit->setCompletionObject(m_completion);
    lineEdit->setCompletionMode(static_cast<KGlobalSettings::Completion>(KRunnerSettings::queryTextCompletionMode()));
    lineEdit->setClearButtonShown(true);
    QStringList pastQueryItems = KRunnerSettings::pastQueries();
    m_searchTerm->setHistoryItems(pastQueryItems);
    m_completion->insertItems(pastQueryItems);
    bottomLayout->insertWidget(4, m_searchTerm, 10);

    m_singleRunnerSearchTerm = new KLineEdit(this);
    bottomLayout->insertWidget(4, m_singleRunnerSearchTerm, 10 );

    //kDebug() << "size:" << m_resultsView->size() << m_resultsView->minimumSize();
    m_resultsScene = new ResultScene(&m_resultData, runnerManager, m_searchTerm, this);
    m_resultsView = new ResultsView(m_resultsScene, &m_resultData, this);
    m_layout->addWidget(m_resultsView);

    connect(m_resultsScene, SIGNAL(viewableHeightChanged()), this, SLOT(fitWindow()));
    connect(m_resultsScene, SIGNAL(matchCountChanged(int)), this, SLOT(matchCountChanged(int)));
    connect(m_resultsScene, SIGNAL(itemActivated(ResultItem*)), this, SLOT(run(ResultItem*)));

    connect(m_searchTerm, SIGNAL(queryTextEdited(QString)), this, SLOT(queryTextEdited(QString)));
    connect(m_searchTerm, SIGNAL(returnPressed()), this, SLOT(runDefaultResultItem()));
    connect(m_singleRunnerSearchTerm, SIGNAL(textChanged(QString)), this, SLOT(queryTextEdited(QString)));
    connect(m_singleRunnerSearchTerm, SIGNAL(returnPressed()),  this, SLOT(runDefaultResultItem()));

    lineEdit->installEventFilter(this);
    m_searchTerm->installEventFilter(this);

    themeUpdated();
    connect(Plasma::Theme::defaultTheme(), SIGNAL(themeChanged()), this, SLOT(themeUpdated()));

    new QShortcut(QKeySequence(Qt::Key_Escape), this, SLOT(resetAndClose()));

    m_layout->setAlignment(Qt::AlignTop);

    setTabOrder(0, m_configButton);
    setTabOrder(m_configButton, m_activityButton);
    setTabOrder(m_activityButton, m_searchTerm);
    setTabOrder(m_searchTerm, m_singleRunnerSearchTerm);
    setTabOrder(m_singleRunnerSearchTerm, m_resultsView);
    setTabOrder(m_resultsView, m_helpButton);
    setTabOrder(m_helpButton, m_closeButton);

    //kDebug() << "size:" << m_resultsView->size() << m_resultsView->minimumSize() << minimumSizeHint();

    // we restore the original size, which will set the results view back to its
    // normal size, then we hide the results view and resize the dialog

    setMinimumSize(QSize(MIN_WIDTH, m_searchTerm->sizeHint().height()));

    // we load the last used size; the saved value is the size of the dialog when the
    // results are visible;
    adjustSize();

    if (KGlobal::config()->hasGroup("Interface")) {
        KConfigGroup interfaceConfig(KGlobal::config(), "Interface");
        restoreDialogSize(interfaceConfig);
        m_defaultSize = size();
    } else {
        const int screenWidth = qApp->desktop()->screenGeometry().width();
        int width = size().width();

        if (screenWidth >= 1920) {
            width = qMax(width, 550);
        } else if (screenWidth >= 1024) {
            width = qMax(width, 300);
        }

        m_defaultSize = QSize(width, 500);
    }

    m_resultsView->hide();

    m_delayedQueryTimer.setSingleShot(true);
    m_delayedQueryTimer.setInterval(50);
    connect(&m_delayedQueryTimer, SIGNAL(timeout()), this, SLOT(delayedQueryLaunch()));

    m_saveDialogSizeTimer.setSingleShot(true);
    m_saveDialogSizeTimer.setInterval(1000);
    connect(&m_saveDialogSizeTimer, SIGNAL(timeout()), SLOT(saveCurrentDialogSize()));

    QTimer::singleShot(0, this, SLOT(resetInterface()));
}