RFR: 8313424: JavaFX controls in the title bar [v65]

[Markus Mack]

On Thu, 24 Apr 2025 17:40:38 GMT, Michael Strauß <mstrauss at openjdk.org> wrote:

> Maybe you used a layout pane inside the `HeaderBar`, and set `HeaderBar.draggable = true` for the layout pane? This would then apply to the entire subtree of the pane, including the `MenuBar`.

Yes, the controls are in an `HBox` with `HeaderBar.draggable=true`. So this is working as documented in `HeaderBar.draggable`. I still wonder if there's something that can be done to prevent controls from being broken by becoming draggable, especially if this happens inadvertently by "inheriting" this bit from its container.

Some ideas:
1) Let every `Node` in the subtree inherit the draggable=true bit, except those that are `Control`s
2) Add code to all affected controls to make them work while being draggable
3) Prevent or ignore the draggable bit on all or all affected controls
4) Don't apply draggable=true to the sub-tree

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PR Comment: https://git.openjdk.org/jfx/pull/1605#issuecomment-2828487426