RFR: 6972078: Can not select single directory with GTKLookAndFeel

[Abhishek Kumar]

On Wed, 26 Oct 2022 10:30:48 GMT, Tejesh R <tr at openjdk.org> wrote:

>> While using a JFileChooser with the file selection mode FILES_AND_DIRECTORIES and multiSelection enabled, it is impossible to select a single directory in GTK LAF.
>> 
>> The condition check has been modified when multiselection is enabled and user has selected single directory.
>> After the fix the behavior of JFileChooser is similar to other LAFs.
>> 
>> An automatic test case `test/jdk/com/sun/java/swing/plaf/gtk/TestFileChooserSingleDirectorySelection.java` is implemented and checked in CI pipeline. Link is attached in JBS.
>
> test/jdk/com/sun/java/swing/plaf/gtk/TestFileChooserSingleDirectorySelection.java line 73:
> 
>> 71:             robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
>> 72:             robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
>> 73:             robot.delay(100);
> 
> robot.mouseMove(pt.x + getSelectedFilesButton.getWidth() / 2,
>                             pt.y + getSelectedFilesButton.getHeight() / 2);
>             robot.mousePress(InputEvent.BUTTON1_DOWN_MASK);
>             robot.mouseRelease(InputEvent.BUTTON1_DOWN_MASK);
>             robot.delay(100);
> 
> `ClickMouse` method can be reused instead.

There is an offset added in x-position. That's why `ClickMouse ` is not reused.

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PR: https://git.openjdk.org/jdk/pull/10866