On Sun, 15 Jun 2025 20:01:11 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. > 2. The disabled states of `HeaderButtonOverlay` as well as > `HeaderButtonBehavior` are changed to mat... This pull request has now been integrated. Changeset: bc433da8 Author: Michael Strauß <mstra...@openjdk.org> URL: https://git.openjdk.org/jfx/commit/bc433da812461a1c2796cdb3123f814e4ce532d5 Stats: 604 lines in 20 files changed: 277 ins; 260 del; 67 mod 8359601: Fix window button states of an extended stage 8359763: Close request handler is not called for an extended stage Reviewed-by: mmack, kcr ------------- PR: https://git.openjdk.org/jfx/pull/1831
