Re: [GITGRUB] New menu interface (implementation)

[Bean]

On Thu, Oct 1, 2009 at 10:53 PM, Michal Suchanek <address@hidden> wrote:
> 2009/10/1 Bean <address@hidden>:
>> On Thu, Oct 1, 2009 at 8:44 PM, Michal Suchanek <address@hidden> wrote:
>>> 2009/10/1 Bean <address@hidden>:
>>>> On Thu, Oct 1, 2009 at 4:41 PM, Michal Suchanek <address@hidden> wrote:
>>>>> Cannot this be inferred automatically?
>>>>>
>>>>> That is any panel that contains command items is a window.
>>>>
>>>> Hi,
>>>>
>>>> Sometimes panel can be used to ground some widgets together, for
>>>> example, a dialog may look like this:
>>>>
>>>> panel
>>>> {
>>>> ádirection = vertical
>>>> áinput = 1
>>>>
>>>> ápanel
>>>> á{
>>>> á ádirection = horizontal
>>>> á átext { text="username"}
>>>> á áedit {}
>>>> á}
>>>>
>>>> ápanel
>>>> á{
>>>> á ádirection = horizontal
>>>> á átext { text="password"}
>>>> á áedit {}
>>>> á}
>>>> }
>>>>
>>>> In this case, the outer panel should be a single window, and the edits
>>>> are items. The inner panel is only used for layout, we don't want them
>>>> to receive input focus.
>>>
>>> Since the panel only contains one active item ( the edit ) this should
>>> still work.
>>>
>>> I recall writing about this here already.
>>
>> Hi,
>>
>> It'd be ok if we only have one level input items, but I plans to add
>> two two level interaction, first is window, second is item, TAB switch
>> different window, while UP/DOWN switch different items. In this setup,
>> we need to mark the panel that acted as window.
>>
>
> Yes, there's no problem inferring the interaction from the widget tree.
>
> Widgets that don't do anything don't get focus, they are ignored for
> purpose of determining focus.
>
> An active item like edit or panel with command is an atomic widget for
> focus. A panel that contains exactly one atomic widget is also atomic.
>
> A panel that contains multiple atomic items (or alternatively in which
> atomic item is focused) acts on directional keys by switching focus to
> next item - this seems what window = 1 does.
>
> A panel that contains multiple panels that can focus but are not
> atomic handles (Shift +)TAB by switching to the (previous) next
> contained panel. In case the focused panel is its (first) last
> focusable item it passes the key to the upper panel.
>
> As an extension the panel direction can be taken into account, and
> panels can be seen as atomic in both directions (atomic) atomic in
> vertical direction (horizontal panel containing atomic widgets), ...
>
> This can work completely automagically without user setup and thus can
> eliminate errors in the setup.
>
> It perhaps might be useful to override the default in some cases but
> this should work for any menu I would want to put together.

Hi,

The window = 1 is used to group some input items together, for example:

screen {
  panel {   # A
    window = 1
    panel { }  #A1
    panel { }  #A2
  }

  panel { # B
    window = 1
    panel { } #B1
    panel { } #B2
  }
}

This define two menus, each with two items. Each menu remember its
current selection, for example, if panel A select a language, panel B
select theme, both can have current selection at the same time. You
can walk from A to B as they represent two different things.

-- 
Bean

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