Method on_previous

DSView/pv/dock/searchdock.cpp:118–168

}

void SearchDock::on_previous()
{
    bool ret;
    int64_t last_pos;
    bool last_hit;
    const auto snapshot = _session->get_snapshot(SR_CHANNEL_LOGIC);
    assert(snapshot);
    const auto logic_snapshot = dynamic_cast<data::LogicSnapshot*>(snapshot);

    if (logic_snapshot == NULL || logic_snapshot->empty()) {
        QString strMsg(L_S(STR_PAGE_MSG, S_ID(IDS_MSG_NO_SAMPLE_DATA), "No Sample data!"));
        MsgBox::Show(strMsg);        
        return;
    }

    const int64_t end = logic_snapshot->get_sample_count() - 1;
    last_pos = _view.get_search_pos();
    last_hit = _view.get_search_hit();
    if (last_pos == 0) {
        QString strMsg(L_S(STR_PAGE_MSG, S_ID(IDS_MSG_SEARCH_AT_START), "Search cursor at the start position!"));
        MsgBox::Show(strMsg);
        return;
    }
    else {
        QFuture<void> future;
        future = QtConcurrent::run([&]{
            last_pos -= last_hit;
            ret = logic_snapshot->pattern_search(0, end, last_pos, _pattern, false);
        });
        Qt::WindowFlags flags = Qt::CustomizeWindowHint;
        QProgressDialog dlg(L_S(STR_PAGE_DLG, S_ID(IDS_DLG_SEARCH_PREVIOUS), "Search Previous..."),
                            L_S(STR_PAGE_DLG, S_ID(IDS_DLG_CANCEL), "Cancel"),0,0,this,flags);
        dlg.setWindowModality(Qt::WindowModal);
        dlg.setWindowFlags(Qt::Dialog | Qt::FramelessWindowHint | Qt::WindowSystemMenuHint |
                           Qt::WindowMinimizeButtonHint | Qt::WindowMaximizeButtonHint);
        dlg.setCancelButton(NULL);

        QFutureWatcher<void> watcher;
        connect(&watcher,SIGNAL(finished()),&dlg,SLOT(cancel()));
        watcher.setFuture(future);
        dlg.exec();

        if (!ret) {
            QString strMsg(L_S(STR_PAGE_MSG, S_ID(IDS_MSG_PATTERN_NOT_FOUND), "Pattern not found!"));
            MsgBox::Show(strMsg);
            return;
        } else {
            _view.set_search_pos(last_pos, true);
        }
    }
}

void SearchDock::on_next()
{