Hello,
I have a UI where the user selects objects and edits them in a separate
(popup) window. The window opens, displays various combo boxes, text fields, and
so on all bound to the model objects through an NSArrayController via the
selection proxy. Also, when the editing window opens up, the topmost edit field
is made first responder.
When one object is being edited, this UI works well - nothing unexpected
happens. However, when multiple objects are being edited, and those objects have
different values, the text fields and combo boxes display the multiple values
placeholder.
Of course that's expected but it's not intuitive for the user. I find that a
list of values (those of the different objects selected) displayed in a "nice
way" would be more helpful, but let's accept that for the moment.
What is more problematic is that if an edit field which displays the placeholder
looses first responder, the model values are set to nil.
Now, together with my default UI behavior that the topmost field becomes first
responder when the window opens, it effectively kills the existing model values
for that field because the user can't close the window without existing the text
field.
I think there should be a conscious decision and action involved by the user
before the text values for a multi-selection get changed. Much like the behavior
of a checkbox button. Tabing through the UI and killing all values along the
path surely isn't very sensible.
That doesn't seem to be possible using bindings, I'm wondering how others solve
this?
Regards
Markus
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__________________________________________
Markus Spoettl
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