[openstack-dev] [horizon] [ux] Changing how the modals are closed in Horizon

Timur Sufiev tsufiev at mirantis.com
Tue Dec 2 12:21:11 UTC 2014

Hello, Horizoneers and UX-ers!

The default behavior of modals in Horizon (defined in turn by Bootstrap
defaults) regarding their closing is to simply close the modal once user
clicks somewhere outside of it (on the backdrop element below and around
the modal). This is not very convenient for the modal forms containing a
lot of input - when it is closed without a warning all the data the user
has already provided is lost. Keeping this in mind, I've made a patch [1]
changing default Bootstrap 'modal_backdrop' parameter to 'static', which
means that forms are not closed once the user clicks on a backdrop, while
it's still possible to close them by pressing 'Esc' or clicking on the 'X'
link at the top right border of the form. Also the patch [1] allows to
customize this behavior (between 'true'-current one/'false' - no backdrop
element/'static') on a per-form basis.

What I didn't know at the moment I was uploading my patch is that David
Lyle had been working on a similar solution [2] some time ago. It's a bit
more elaborate than mine: if the user has already filled some some inputs
in the form, then a confirmation dialog is shown, otherwise the form is
silently dismissed as it happens now.

The whole point of writing about this in the ML is to gather opinions which
approach is better:
* stick to the current behavior;
* change the default behavior to 'static';
* use the David's solution with confirmation dialog (once it'll be rebased
to the current codebase).

What do you think?

[1] https://review.openstack.org/#/c/113206/
[2] https://review.openstack.org/#/c/23037/

P.S. I remember that I promised to write this email a week ago, but better
late than never :).

Timur Sufiev
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