This is arguably a 20 years old Firefox bug (at the very least an
under-specified area of the spec where Firefox's behaviour is
technically allowed under spec but not super useful or convenient):
`window.getSelection()` simply doesn't work when invoked on a form
field: https://bugzilla.mozilla.org/show_bug.cgi?id=85686.
Getting the selection data more explicitly by looking up the focused
form element, then checking *its* selection, seems to work fine and be
cross-browser.
Also focus() the input while at it: according to MDN
> Calling element.select() will not necessarily focus the input, so it
> is often used with HTMLOrForeignElement.focus.
And jQuery doesn't really document whether `select()` will implicitly
`focus()`, so better safe than sorry.
closesodoo/odoo#69579
Signed-off-by: Xavier Morel (xmo) <xmo@odoo.com>
Xavier Morel
95128e6472