Control of Text Fields.

[Alex Tweedly]

OK, so I was close, but didn't get the cigar.

Here's an expanded snippet. The input is in a field called "fInput", the 
buttons are all in a group, and handled by the group script (saves 
having many tiny almost identical scripts).

The script  uses the name of the target - but since I would never, ever 
have a control named as a number, the digit buttons use their label instead.

If the user cannot select a chunk of text then some of this could be 
shortened.


> on mouseup
>    if the target = me then
>       -- click in the background in the group
>       exit mouseup
>    end if
>    local tChunk
>    focus on fld "fInput"
>    put the selectedchunk into tChunk
>    if the label of the target is a number then
>       put the label of the target into the selectedchunk
>       exit mouseUp
>    end if
>    local tFirst, tLast
>    put word 2 of tChunk into tFirst
>    put word 4 of tChunk into tLast
>    switch the short name of the target
>       case "go left"
>          select before char (min(tFirst, tLast)) of fld "fInput"
>          break
>       case  "go right"
>          select after char (max(tFirst, tLast)) of fld "fInput"
>          break
>       case "Del"
>          -- remove the selection, or the char *after* the ibeam
>          if tFirst <= tLast then
>             put empty into char tFirst to tLast of fld "fInput"
>          else
>             put empty into char (tFirst) of fld "fInput"
>          end if
>          break
>       case "BS"
>          -- remove the selection, or the char *before* the ibeam
>          if tFirst <= tLast then
>             put empty into char tFirst to tLast of fld "fInput"
>          else
>             put empty into char (tFirst-1) of fld "fInput"
>          end if
>          break
>          -- all the other keys !!
>       default
>    end switch
> end mouseup

Alex.


On 05/11/2021 01:39, Roger Guay via use-livecode wrote:
> Thanks, Alex. Sorry I didn’t make myself clear. I’m building a calculator stack with forward and back arrow buttons and a Delete button. What's the script for these buttons?
>
> Roger
>
>> On Nov 4, 2021, at 5:53 PM, Alex Tweedly via use-livecode <use-livecode at lists.runrev.com> wrote:
>>
>> Hi Roger,
>>
>> I'm not sure I properly understand your question.
>>
>> here's a code snippet the moves the insertion point (in this sample, typing an 'f' moves it forward, 'b' moves it back). (Note this also works if there is some text selected - it moves the insertion to just after the selection, just like the arrow key does).
>>
>>> on keydown p
>>>     local t
>>>     switch p
>>>        case  "f"
>>>           put word 4 of the selectedchunk into t
>>>           select after char (t+1) of me
>>>           break
>>>        case "b"
>>>           put word 2 of the selectedchunk into t
>>>           select before char (t-1) of me
>>>           break
>>>     end  switch
>>> end keydown
>> To then delete the char in front of it, you'd do something like
>>
>>     put empty into char (t+1) of me
>>
>> Hope that's close enough to what you were asking, or at least gives you a starting place  :-),
>>
>> Alex.
>>
>> On 04/11/2021 20:49, Roger Guay via use-livecode wrote:
>>> I simply want to be able to move the insertion iBeam in a focused field left and right, one char at a time (just like the left and right arrows keys), and then to delete the char in front of it (just like the Delete key). The dictionary was again of no use to me. Can someone please provide sample scripts?
>>>
>>> Thanks,
>>> Roger
>>> _______________________________________________
>>> use-livecode mailing list
>>> use-livecode at lists.runrev.com
>>> Please visit this url to subscribe, unsubscribe and manage your subscription preferences:
>>> http://lists.runrev.com/mailman/listinfo/use-livecode
>> _______________________________________________
>> use-livecode mailing list
>> use-livecode at lists.runrev.com
>> Please visit this url to subscribe, unsubscribe and manage your subscription preferences:
>> http://lists.runrev.com/mailman/listinfo/use-livecode
>
> _______________________________________________
> use-livecode mailing list
> use-livecode at lists.runrev.com
> Please visit this url to subscribe, unsubscribe and manage your subscription preferences:
> http://lists.runrev.com/mailman/listinfo/use-livecode