C++ QTextEdit::selectAll方法代码示例

void ItemWidget::setEditorData(QWidget *editor, const QModelIndex &index) const
{
    QTextEdit *textEdit = qobject_cast<QTextEdit *>(editor);
    if (textEdit != NULL) {
        const QString text = index.data(Qt::EditRole).toString();
        textEdit->setPlainText(text);
        textEdit->selectAll();
    }
}

void PluginSpellCheck::slotSpellCheck()
{
    // qDebug() << "Plugin parent : " << parent()->objectName() << " (" << parent()->metaObject()->className() << ")";
    // The parent is assumed to be a NotepadPart
    // Can't use qobject_cast here, we would need NotepadPart to be in a shared library.
    if (!parent()->inherits("NotepadPart")) {
        KMessageBox::error(0, QStringLiteral("You just called the spell-check action on a wrong part (not NotepadPart)"));
    } else {
        NotepadPart *part = (NotepadPart *) parent();
        QTextEdit *widget = qobject_cast<QTextEdit *>(part->widget());
        Q_ASSERT(widget);
        widget->selectAll();
    }
}

    void editMenuActivated(QAction *action)
    {
        QWidget* w = qApp->focusWidget();
        QTextEdit* te = qobject_cast<QTextEdit*>(w);
        QLineEdit* le = qobject_cast<QLineEdit*>(w);

        if (action == selectAction) {
            highlighting = this;
            return;
        }
        highlighting = 0;

        if (action == copyAction) {
            if (te) {
                if (te->hasEditFocus()) {
                    te->copy();
                } else {
                    QTextCursor c = te->textCursor();
                    te->selectAll();
                    te->copy();
                    te->setTextCursor(c);   // reset selection
                }
            } else if (le) {
                if (le->hasEditFocus()) {
                    le->copy();
                } else {
                    qApp->clipboard()->setText(le->text());
                }
            }
        } else if (action == pasteAction) {
            // assumes clipboard is not empty if 'Paste' is able to be
            // activated, otherwise the line/textedit might be cleared
            // without pasting anything back into it
            if (te) {
                if (!te->hasEditFocus())
                    te->clear();
                te->paste();
                if (!te->hasEditFocus()) {
                    te->moveCursor(QTextCursor::Start);
                    te->ensureCursorVisible();
                }
            } else if (le) {
                if (!le->hasEditFocus())
                    le->clear();
                le->paste();
                if (!le->hasEditFocus())
                    le->home(false);
            }
        }
    }

QString QtopiaInputDialog::getMultiLineText(QWidget *parent, const QString &title, const QString &label,
                                            QtopiaApplication::InputMethodHint hint, const QString &hintParam,
                                            const QString &text, bool *ok)
{
    QTextEdit *te = new QTextEdit;
    QtopiaApplication::setInputMethodHint(te, hint, hintParam);
    te->setPlainText(text);
    te->setFocus();
    te->selectAll();
    te->setMinimumHeight(100);

    QtopiaInputDialog dlg(parent, title, label, te);

    QString result;
    bool accepted = (QtopiaApplication::execDialog(&dlg) == QDialog::Accepted);
    if (ok)
        *ok = accepted;
    if (accepted)
        result = te->toPlainText();

    return result;
}

    void highlightMatches(const QString &pattern)
    {
        QTextEdit *ed = qobject_cast<QTextEdit *>(m_widget);
        if (!ed)
            return;

        // Clear previous highlights.
        ed->selectAll();
        QTextCursor cur = ed->textCursor();
        QTextCharFormat fmt = cur.charFormat();
        fmt.setBackground(Qt::transparent);
        cur.setCharFormat(fmt);

        // Highlight matches.
        QTextDocument *doc = ed->document();
        QRegExp re(pattern);
        cur = doc->find(re);

        int a = cur.position();
        while ( !cur.isNull() ) {
            if ( cur.hasSelection() ) {
                fmt.setBackground(Qt::yellow);
                cur.setCharFormat(fmt);
            } else {
                cur.movePosition(QTextCursor::NextCharacter);
            }
            cur = doc->find(re, cur);
            int b = cur.position();
            if (a == b) {
                cur.movePosition(QTextCursor::NextCharacter);
                cur = doc->find(re, cur);
                b = cur.position();
                if (a == b) break;
            }
            a = b;
        }
    }

// すべて選択
void MainWindow::textEditSelectAll() {
    QTextEdit* textEdit = getCurrentTextEdit();
    if (textEdit == NULL) return;
    textEdit->selectAll();
}