On Tue, 17 Jun 2025 00:23:48 GMT, Michael Strauß <mstra...@openjdk.org> wrote:
>> The window button states (disabled/hidden) of extended stages with a
>> `HeaderButtonOverlay` or custom header buttons are inconsistent with what we
>> would expect from the OS (Windows and Linux). To figure out what we would
>> expect, I started with gathering some data. The following table shows the
>> button states of system-decorated windows on various platforms:
>>
>> #### Windows 11
>>
>> | Window attributes | Iconify | Maximize | Close |
>> |---|---|---|---|
>> | resizable, not modal | visible | visible | visible |
>> | not resizable, not modal | visible | visible, disabled | visible |
>> | resizable, modal | visible, disabled | visible | visible |
>> | not resizable, modal | hidden | hidden | visible, utility-style |
>>
>> #### Ubuntu 24 / Fedora 41 (GNOME)
>>
>> | Window attributes | Iconify | Maximize | Close |
>> |---|---|---|---|
>> | resizable, not modal | visible | visible | visible |
>> | not resizable, not modal | visible | hidden | visible |
>> | resizable, modal | visible, _not working_ | visible, _not working_ |
>> visible |
>> | not resizable, modal | visible, _not working_ | hidden | visible |
>>
>> #### Kubuntu 24 (KDE)
>>
>> | Window attributes | Iconify | Maximize | Close |
>> |---|---|---|---|
>> | resizable, not modal | visible | visible | visible |
>> | not resizable, not modal | visible | hidden | visible |
>> | resizable, modal | visible, _not working_ | visible | visible |
>> | not resizable, modal | visible, _not working_ | hidden | visible |
>>
>> ## Observations
>>
>> 1. On Windows, buttons are generally disabled when their operation is not
>> possible with the given window attributes.
>> * Exception: modal/non-resizable windows look like utility windows
>> (iconify and maximize are hidden)
>> 2. On GNOME and KDE, buttons are generally hidden when their operation is
>> not possible.
>> * Exception: iconify and maximize on modal windows is not hidden, but
>> seems to simply not do anything (bug?)
>>
>> ## Permitted window button operations
>>
>> Given the gathered observations and some simple logic, this is the table of
>> operations that are permitted for all combinations of modal and resizable
>> window attributes:
>>
>> | Window attributes | Iconify | Maximize | Close |
>> |---|---|---|---|
>> | resizable, not modal | yes | yes | yes |
>> | not resizable, not modal | yes | no | yes |
>> | resizable, modal | no | yes | yes |
>> | not resizable, modal | no | no | yes |
>>
>> ## Fixes
>>
>> This PR includes the following changes:
>> 1. Unused code relating to window modality is removed...
>
> Michael Strauß has updated the pull request incrementally with one additional
> commit since the last revision:
>
> Handle non-modal owned window correctly
Another suspected issue (not really related to this PR), close request handlers
are not called when using EXTENDED. E.g.:
stage.setOnCloseRequest(event -> {
System.out.println("Never called...");;
});
Same for dialogs...
-------------
PR Comment: https://git.openjdk.org/jfx/pull/1831#issuecomment-2978564173
