Edward, Thomas, thanks for advice!
Putting it all together, I think it could be a nice beginner's template
to do something with the selected text in the body. I also use the power of
regex for complex text-editing related tasks.
command = 'add_line_end'
# Undo begin
b = c.undoer.beforeChangeNodeContents(p)
#get selected text from body
w = c.frame.body.wrapper
s = w.getAllText()
i, j = w.getSelectionRange()
# to get entire lines:
start, junk = g.getLine(s, i)
junk, end = g.getLine(s, j)
# or just selected text:
# start, end = i,j
txt=s[start:end]
#do something
txt=txt.replace('\n','\\\\\n')
#insert edited text back
p.b=p.b[:start]+txt+p.b[end:]
c.redraw()
# Undo End
c.undoer.afterChangeNodeContents(p,
command=command, bunch=b)
пт, 4 нояб. 2022 г. в 15:38, Thomas Passin <[email protected]>:
> No need to apologize! Leo can do so many things that it's hard to find
> information, or even know there is something to look for. I looked in
> LeoDocs.leo (you can open it from the Help menu). Search for _Undoably
> changing body text_ (I originally just searched for _undo_). It says
>
> To undo a single change to body text::
>
> command = 'my-command-name'
> b = c.undoer.beforeChangeNodeContents(p, oldYScroll=ypos)
> # Change p's body text.
> c.undoer.afterChangeNodeContents(p,
> command=command, bunch=b, dirtyVnodeList=[])
>
> Someone else can correct me, but I don't think that the exact value of the
> string *command* matters. Your script will probably have a command name,
> though, so might as well use it.
> On Friday, November 4, 2022 at 8:17:01 AM UTC-4 Israel Hands wrote:
>
>> Many thanks for such prompt and helpful advice. A significant part of
>> what makes Leo so great. I'm off to try Luka's and Edward's solutions.
>> Sorry to be so slow tbp1, but how do I set up undo?
>>
>> Thanks again from momentarily sunny Wales.
>>
>> IH
>>
>> On Friday, 4 November 2022 at 12:01:10 UTC [email protected] wrote:
>>
>>> Don't forget to set up for undo.
>>>
>>> On Friday, November 4, 2022 at 6:48:50 AM UTC-4 Edward K. Ream wrote:
>>>
>>>> On Fri, Nov 4, 2022 at 3:25 AM Luka <[email protected]> wrote:
>>>>
>>>> There are plenty of ways to do it in LEO but this is how I do it.
>>>>>
>>>>> Create a @button node with script, select text in body, and run:
>>>>>
>>>>> @language python
>>>>>
>>>>> #get selected text from body
>>>>> w = c.frame.body.wrapper
>>>>> s = w.getSelectedText()
>>>>> start,end=w.getSelectionRange()
>>>>> b=p.b
>>>>>
>>>>> #do something
>>>>> s=s.replace('\n','\\\\\n')
>>>>>
>>>>> #insert edited text back
>>>>> p.b=b[:start]+s+b[end:]
>>>>> c.redraw()
>>>>>
>>>>
>>>> Thanks, Luka, for this tip.
>>>>
>>>> Leo itself typically expands the selection to include entire lines.
>>>> Like this (tested) code:
>>>>
>>>> w = c.frame.body.wrapper
>>>> s = w.getAllText()
>>>> i, j = w.getSelectionRange()
>>>> start, junk = g.getLine(s, i)
>>>> junk, end = g.getLine(s, j)
>>>>
>>>> Edward
>>>>
>>> --
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