bool ZealSearchEdit::eventFilter(QObject *obj, QEvent *ev)
{
if (obj == this && ev->type() == QEvent::KeyPress) {
QKeyEvent *keyEvent = static_cast<QKeyEvent*>(ev);
if (keyEvent->key() == Qt::Key_Down || keyEvent->key() == Qt::Key_Up) {
QModelIndex index = treeView->currentIndex();
int nextRow = keyEvent->key() == Qt::Key_Down
? index.row() + 1
: index.row() - 1;
QModelIndex sibling = index.sibling(nextRow, 0);
if (nextRow >= 0 && nextRow < treeView->model()->rowCount()) {
treeView->setCurrentIndex(sibling);
return true;
}
}
if (keyEvent->key() == Qt::Key_Return) {
emit treeView->activated(treeView->selectionModel()->currentIndex());
return true;
}
// Autocompletes the prefixes.
if (keyEvent->key() == Qt::Key_Tab) {
QString currentText = text();
QString completed = currentCompletion(currentText);
if (!completed.isEmpty()) {
setText(completed);
return true;
}
}
}
return LineEdit::eventFilter(obj, ev);
}
void ZealSearchEdit::showCompletions(const QString &newValue)
{
int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
int textWidth = fontMetrics().width(newValue);
prefixCompleter->setCompletionPrefix(text());
QString completed = currentCompletion(newValue).mid(newValue.size());
QSize labelSize(fontMetrics().width(completed), size().height());
completionLabel->setMinimumSize(labelSize);
completionLabel->move(frameWidth + 2 + textWidth, frameWidth);
completionLabel->setText(completed);
}
bool SearchEdit::event(QEvent *event)
{
if (event->type() != QEvent::KeyPress)
return QLineEdit::event(event);
// Tab key cannot be overriden in keyPressEvent()
if (reinterpret_cast<QKeyEvent *>(event)->key() != Qt::Key_Tab)
return QLineEdit::event(event);
const QString completed = currentCompletion(text());
if (!completed.isEmpty())
setText(completed);
return true;
}