RFR: 8359601: Fix window button states of an extended stage [v6]
Markus Mack
mmack at openjdk.org
Sun Jun 22 18:44:34 UTC 2025
On Sat, 21 Jun 2025 23:37:13 GMT, Michael Strauß <mstrauss at 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:
>
> fix resizable state of macOS window
Changes look good, all combinations that I've tested manually seem to work fine now. I also tested with gnome & KDE this time.
-------------
Marked as reviewed by mmack (Author).
PR Review: https://git.openjdk.org/jfx/pull/1831#pullrequestreview-2948272405
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