[Sugar-devel] [DESIGN] Double clicks

[Walter Bender]

On Sat, Mar 6, 2010 at 6:34 AM, Sascha Silbe
<sascha-ml-ui-sugar-devel at silbe.org> wrote:
> On Sat, Mar 06, 2010 at 10:27:37AM +0000, Aleksey Lim wrote:
>
>> But looks like sugar doesn't use double clicks somewhere, was it done by
>> intention e.g. double clicks are too complicated to reproduce?
>
> Please don't require multi-clicks (double, triple) anywhere (or for that
> matter, any operation where timing is critical). Even I sometimes have
> trouble doing those, not to mention lots of adults I've watched using
> Windows. They also don't seem to understand the distinction between single
> and double clicks, usually doing double or even triple clicks for virtually
> any operation that doesn't provide instant (<< 100ms) response.
>
>> I'm planing to use double clicks in Library activity e.g. for [1] when [a
>> user] wants to select all entries he needs to double click on checkbox
>
> What actions would be sensible to do on all entries? How often would a user
> want to execute it on all entries?
> Depending on the answers to those questions a viable option might be to just
> split up the action into "[action] on selected entries" and "[action] on all
> entries". Maybe even a submenu "[action]" -> "on this entry", "on selected
> entries", "on all entries".
>
>> (can't find better method,
>
> Traditional UIs provide "Select All" and "Select None" in a menu. So one
> option would be to add "Select all entries" to the contextual toolbar in
> [1].
>
>> add toolbar button looks redundant, popup menu requires several clicks
>> (but could be present anyway to have explicit method)).
>
> All of those sound much better to me than requiring timing constraints to be
> met.
>
>
> [1] http://wiki.sugarlabs.org/go/Design_Team/Designs/Journal#06
>
> CU Sascha
>
> --
> http://sascha.silbe.org/
> http://www.infra-silbe.de/
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I agree with Sascha that double clicking should be avoided... Perhaps
kids can learn it, but we will immediately make the interface unusable
for the elderly.

We already use modifier keys in the interface to switch to an advanced
behavior. Why not the usual shift and ctrl clicks?

-walter
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-- 
Walter Bender
Sugar Labs
http://www.sugarlabs.org