C++ (Cpp) QFormLayout::removeWidget示例

示例#1

void BookmarksManager::updateEditBox(BookmarkItem* item)
{
    setUpdatesEnabled(false);
    m_blockDescriptionChangedSignal = true;

    bool editable = bookmarkEditable(item);
    bool showAddressAndKeyword = item && item->isUrl();
    bool clearBox = !item;

    if (clearBox) {
        ui->title->clear();
        ui->address->clear();
        ui->keyword->clear();
        ui->description->clear();

        ui->title->setReadOnly(true);
        ui->address->setReadOnly(true);
        ui->keyword->setReadOnly(true);
        ui->description->setReadOnly(true);
    }
    else {
        ui->title->setText(item->title());
        ui->address->setText(item->url().toEncoded());
        ui->keyword->setText(item->keyword());
        ui->description->setPlainText(item->description());
    }

    ui->title->setReadOnly(!editable);
    ui->address->setReadOnly(!editable);
    ui->keyword->setReadOnly(!editable);
    ui->description->setReadOnly(!editable);

    ui->labelAddress->setVisible(showAddressAndKeyword);
    ui->address->setVisible(showAddressAndKeyword);
    ui->labelKeyword->setVisible(showAddressAndKeyword);
    ui->keyword->setVisible(showAddressAndKeyword);

    // Without removing widgets from layout, there is unwanted extra spacing
    QFormLayout* l = static_cast<QFormLayout*>(ui->editBox->layout());

    if (showAddressAndKeyword) {
        // Show Address + Keyword
        l->insertRow(1, ui->labelAddress, ui->address);
        l->insertRow(2, ui->labelKeyword, ui->keyword);
    }
    else {
        // Hide Address + Keyword
        l->removeWidget(ui->labelAddress);
        l->removeWidget(ui->labelKeyword);
        l->removeWidget(ui->address);
        l->removeWidget(ui->keyword);
    }

    m_blockDescriptionChangedSignal = false;

    // Prevent flickering
    QTimer::singleShot(10, this, SLOT(enableUpdates()));
}