Re: Dialog button layout: including overlays

Mark Simon wrote:

> I’m new to this group, so I apologise if this is the wrong forum.
>
> I am told 
> (https://developer.mozilla.org/en-US/docs/Code_snippets/Dialogs_and_Prompts) 
> that I can customise my own layout for dialog buttons, which I have 
> done as follows to include a checkbox:
>
>     <hbox id="okcancel">
>         <checkbox id="copy" label="Copy" value="1" />
>         <spacer flex="1"/>
>         <button dlgtype="cancel"/>
>         <button dlgtype="accept"/>
>     </hbox>
>
> It works as expected, and, among other things, includes the checkbox 
> on the same row as the buttons.
>
> However, if move the code to a separate overlay file, and try to 
> include it as follows:
>
> <?xul-overlay href="chrome://htmltools/content/dialog/include.xul"?>
> <hbox id="okcancel"/>
>
> it doesn’t work properly. The technique works for all other included 
> elements, but not this one. Depending on how I tweak things, I might 
> get additional vacant buttons, or buttons that don’t activate properly.
>
> Is there an extra or alternative step that I should use for this?

Accessing XUL elements before the overlay has loaded (e.g. at the top 
level of a script rather than in an onload handler) has been known to 
cause this sort of behaviour.

-- 
Warning: May contain traces of nuts.
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