On Sep 20, 6:22 pm, "Edward K. Ream" <[EMAIL PROTECTED]> wrote:
> On Sat, Sep 20, 2008 at 6:50 AM, zpcspm <[EMAIL PROTECTED]> wrote:
> Please follow the example carefully. Here is a tested script:
>
> @@@
> def getInput (event=None):
>
> stateName = 'get-input'
> k = c.k ; state = k.getState(stateName)
>
> if state == 0:
> k.setLabelBlue('Input: ',protect=True)
> k.getArg(event,stateName,1,getInput)
> else:
> k.clearState()
> g.es_print('input:',k.arg)
>
> getInput()
> QQQ
>
> The trick is that you must define a function that can be used as a callback.
Since it is not possible to return the user input from this function,
I have tried the opposite way. I have tried to pass another function
to getInput() as argument, a function that would accept k.arg as
argument and would actually do something instead of the hardcoded
g.es_print('input:',k.arg). Something like:
--- cut here ---
def my_print(s):
g.es_print('input:',s)
def getInput (myfunc, event=None):
stateName = 'get-input'
k = c.k ; state = k.getState(stateName)
if state == 0:
k.setLabelBlue('Input: ',protect=True)
k.getArg(event,stateName,1,getInput)
else:
k.clearState()
myfunc(k.arg)
getInput(my_print)
--- cut here ---
This didn't work as well. Investigation of the leo source code stopped
at
Code-->
Gui Base classes-->
@thin leoKeys.py-->
class keyHandlerClass-->
Externally visible helpers-->
getArg
line 41 of this method is:
if handler: handler(event)
So it looks that the interaction with the handler is hardcoded. I
can't have a getInput() function with more arguments.
This is a double lock: I can't return anything from the handler
function and I can't pass anything to the handler function, so I'm
stuck again. Of course, instead of calling a function I can just do
what I need explicitly after clearing the state in the "else" code
block. But I expect that this would lead to a lot of redundancy in
every piece of code that needs input from user. That's why I need a
way to avoid this.
It is very possible that I'm just missing some subtle point here, but
I don't see what it could be ATM.
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