Review Request 115478: Add QFileDialog unit autotest for filters (which reveals a QPA bug)

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This review has been submitted with commit d460f4cc4d8d23ff6e8a55f39b83ae045e5fc05e by Dominik Haumann to branch master.

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On March 9, 2014, 6:11 p.m., Dominik Haumann wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/115478/
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> 
> (Updated March 9, 2014, 6:11 p.m.)
> 
> 
> Review request for KDE Frameworks, Àlex Fiestas and Gregor Mi.
> 
> 
> Repository: frameworkintegration
> 
> 
> Description
> -------
> 
> The following QPA integration does not work as expected:
> 
>     QStringList nameFilterList = QStringList() << "c (*.cpp)" << "h (*.h)";
>     dialog.setNameFilters(nameFilterList);
> 
>     QString selectNameFilter("h (*.h)");
>     dialog.selectNameFilter(selectNameFilter);
> //  QCOMPARE(dialog.selectedNameFilter(), selectNameFilter); // (1) always fails, no matter what
> 
>     dialog.show();
>     QCOMPARE(dialog.selectedNameFilter(), selectNameFilter); // (2) currently also fails, Qt patch required
> 
> The problem is described in detail in:
> http://mail.kde.org/pipermail/kde-frameworks-devel/2014-February/010691.html
> 
> 
> The Qt patches that make (2) work are as follows:
> 
> diff --git a/src/widgets/dialogs/qfiledialog.cpp b/src/widgets/dialogs/qfiledialog.cpp
> index da026d2..72b2310 100644
> --- a/src/widgets/dialogs/qfiledialog.cpp
> +++ b/src/widgets/dialogs/qfiledialog.cpp
> @@ -627,7 +627,8 @@ void QFileDialogPrivate::helperPrepareShow(QPlatformDialogHelper *)
>      options->setInitialDirectory(directory.exists() ?
>                                   QUrl::fromLocalFile(directory.absolutePath()) :
>                                   QUrl());
> -    options->setInitiallySelectedNameFilter(q->selectedNameFilter());
> +    if (options->initiallySelectedNameFilter().isEmpty())
> +        options->setInitiallySelectedNameFilter(q->selectedNameFilter());
>      if (options->initiallySelectedFiles().isEmpty())
>          options->setInitiallySelectedFiles(userSelectedFiles());
>  }
> @@ -1447,6 +1448,7 @@ void QFileDialog::selectNameFilter(const QString &filter)
>  {
>      Q_D(QFileDialog);
>      if (!d->usingWidgets()) {
> +        d->options->setInitiallySelectedNameFilter(filter);
>          d->selectNameFilter_sys(filter);
>          return;
>      }
> 
> However, the QCOMPARE in (1) is still an open issue. And no fix in sight...
> 
> Ok to commit this to frameworksintegration (and therewith make it unstable?)
> 
> 
> Diffs
> -----
> 
>   autotests/CMakeLists.txt f76ab15 
>   autotests/kfiledialog_unittest.cpp PRE-CREATION 
>   src/platformtheme/kdeplatformfiledialoghelper.cpp c82b821 
> 
> Diff: https://git.reviewboard.kde.org/r/115478/diff/
> 
> 
> Testing
> -------
> 
> The attached unit test currently fails due to a bug in the Qt QPA.
> 
> With the Qt patch above, (2) in the unit test passes, so one is able to call QFileDialog::selectNameFilter().
> However, (1) remains broken.
> 
> 
> Thanks,
> 
> Dominik Haumann
> 
>

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