[genivi-dlt] Search Text Prediction feature Patch

Alexander.AW.Wenzel at bmw.de Alexander.AW.Wenzel at bmw.de
Tue Aug 9 03:33:02 EDT 2016

Hello Vivek,

We found an issue in your Patch.

The DLT Viewer crashes in some circumstances.

To reproduce the crash I have done the following:

1)      Search for "123" in the toolbar, then press return

2)      Seach for "1", then press return + another key e.g. "#" in parallel

3)      When Completer window was open, viewer crashes

We get a null pointer exception in QCoreApplication::notifyInternal(QObject *, QEvent *)

It looks like these lines causes the issue:

void MainWindow::on_action_FindNext()
+    if(!searchTextbox->text().isEmpty() && !list.contains(searchTextbox->text()))
+       {
+           list.append(searchTextbox->text());
+       }
+    newCompleter = new QCompleter(list, this);
+    searchTextbox->setCompleter(newCompleter);
+    newCompleter->setCaseSensitivity(Qt::CaseInsensitive);

If I call setCompleter only once, it works. Also we will get a memory leak, because the memory for newCompleter is not freed.

Solution would be only create and set the completer once and us an abstract model instead of the StringList.
Looks like Qt does not provide a function to update the StringList.

Can you provide a patch for this issue? If not I have to remove the Completer feature.

Best regards


BMW Group
Alexander Wenzel
Architect. Connected Drive, I and C Syst.

80788 München

Tel: +49-89-382-54199
Mail: alexander.aw.wenzel at bmw.de<mailto:alexander.aw.wenzel at bmw.de>
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Von: genivi-diagnostic-log-and-trace-bounces at lists.genivi.org [mailto:genivi-diagnostic-log-and-trace-bounces at lists.genivi.org] Im Auftrag von Vivek Pandey
Gesendet: Mittwoch, 9. Dezember 2015 13:40
An: genivi-diagnostic-log-and-trace at lists.genivi.org
Betreff: [genivi-dlt] Search Text Prediction feature Patch

Hello All,

This patch adds a DropDown menu to DLT search TextBox.

In a particular session, if a user repeats an input in search TextBox, a suggestion list will be provided to user from which user can select an appropriate input for search as per choice.

User can switch inside the suggestion list, using UP and DOWN arrow keys as well as with a mouse and can select a search text with ENTER or RETURN keys as well as with mouse click on Search Icon.



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