Help with Listbox

[orebla]

Hi, I'm a newbie!!
I've a problem with appuifw.Listbox() function.
Example:

import appuifw

appuifw.app.title = u'mSoftware'

icon1 = appuifw.Icon(u"\mrestore.mbm", 0, 1)
icon2 = appuifw.Icon(u"\mrestore.mbm", 2, 3)
           
def primo_tasto():
    appuifw.note(u"Selezionato PRIMO", "info")
    
def secondo_tasto():
    appuifw.note(u"Selezionato SECONDO", "info")

entries = [(u"Primo", primo_tasto),
            (u"Secondo", secondo_tasto)]

           
lb = appuifw.Listbox(entries, handler)

I don't understand what is "handler"??
And why the code doesn't work??

Sorry for the bad english

thank you

[nlsp]

Please read the documentation (PythonForS60_1_4_1_doc.pdf) available from the Sourceforge download area.

But to answer your question, the handler parameter should be your callback function. It will be called whenever the select button is clicked while the listbox is active.
The entries parameter should be a list of unicode objects or tuples in one of the following forms:

[u"entry 1", u"entry 2", ... ] -> simple textonly listbox
[(u"entry 1", u"entry 1 line 2"), (u"entry 2 line 2"), ... ] -> double line
[(u"entry 1", icon1), (u"entry 2", icon2), ... ] -> listbox with small icon
[(u"entry 1, u"entry 1 line 2", icon1), ... ] -> double line with large icon

Finally, you have to assign your lb to appuifw.app.body to make it active.

Regards, Niels

[croozeus]

Hi, I'm a newbie!!
I've a problem with appuifw.Listbox() function.
Example:

import appuifw

appuifw.app.title = u'mSoftware'

icon1 = appuifw.Icon(u"\mrestore.mbm", 0, 1)
icon2 = appuifw.Icon(u"\mrestore.mbm", 2, 3)
           
def primo_tasto():
    appuifw.note(u"Selezionato PRIMO", "info")
    
def secondo_tasto():
    appuifw.note(u"Selezionato SECONDO", "info")

entries = [(u"Primo", primo_tasto),
            (u"Secondo", secondo_tasto)]

           
lb = appuifw.Listbox(entries, handler)

I don't understand what is "handler"??
And why the code doesn't work??

Sorry for the bad english

thank you

Hello orebla and welcome to the Forum !!

In the line

lb = appuifw.Listbox(entries, handler)

hadler is a callback function and you should define its body! I cant see it definition in your code so the code doest work!

So you should define it at follows

def handler():
 index = lb.current()
 print index
 print entries[index]

You can also find such bitexamples at http://croozeus.googlepages.com/appuifw_module

Hope that helps

[lfd]

Hi

The handler or observer is a function that will be called when you press the 'Select' button of the joystick. You have to define what that function have to perform; usually it gets the current selected item id of the list and then do some interesting stuff with it.

If you need to catch other key event you can use the bind method. As an example you want the key 5 to have the same behavior than the select you'll do:

lb.bind(Key5, handler)

Now, since all those signals are coming from a UI element, it __has__ to be set to the application body:

appuifw.app.body = lb

LFD

[orebla]

Thank you for answer.

Ok, in the example in this page: http://croozeus.googlepages.com/appuifw_module

the function shout() print the number of the item that's select by the user.

But I don't understand how insert an instruction to execute a code if the user select "Signal" or "Battery".

Example:

I select: "Signal"
The script create a windows info with:

Appuifw.note(u"Signal option selected", 'info')

But how?

I try to insert a "IF" in the function shout() but don't work...

Thank you

[croozeus]

Thank you for answer.

Ok, in the example in this page: http://croozeus.googlepages.com/appuifw_module

the function shout() print the number of the item that's select by the user.

But I don't understand how insert an instruction to execute a code if the user select "Signal" or "Battery".

Example:

I select: "Signal"
The script create a windows info with:

Appuifw.note(u"Signal option selected", 'info')

But how?

I try to insert a "IF" in the function shout() but don't work...

Thank you

Hello orebla

Try the following code.I think this is what you needed.

import e32
import appuifw
 
choices =[(u"Option1Text", "option1action"),
          (u"Option2Test", "option2action")]
choices_labels = [x[0] for x in choices]
 
   
def handle_selection():
    index = lb.current()
    code = choices[index][1]
    lb.set_list([u"Please wait..."])
    if code == "option1action":
        appuifw.note(u"here is where we process option1", 'info')
       
        
    elif code == "option2action":
        appuifw.note(u"here is where we process option2", 'info')
    else:
        appuifw.note(u"no valide code detected", 'error')
    lb.set_list(choices_labels)
 
def handle_add():
    pass  
 
def handle_delete():
    pass
 
def exit_key_handler():
    app_lock.signal()
 
lb = appuifw.Listbox(choices_labels, handle_selection)
 
old_title = appuifw.app.title
appuifw.app.title = u"Listbox UI"
appuifw.app.body = lb
appuifw.app.menu = [(u"Add new item", handle_add),
                    (u"Delete item", handle_delete)]
appuifw.app.exit_key_handler = exit_key_handler
 
app_lock = e32.Ao_lock()
app_lock.wait()
 
appuifw.app.title = old_title

The code displays info msg when options1 or option 2 are selected...
You can modify the code to your requirement to Show Battery and Signal respectively...

Hope that helps

Best Regards
croozeus

[orebla]

Yes!
Thanks!


Now I understand how to do!

Thank you!