Re: Tree Widget: hilitedValue?

2022-07-11 Thread Mark Waddingham via use-livecode

On 2022-07-10 21:33, Richard Gaskin via use-livecode wrote:

Brian Milby wrote:


You could also turn the path into an array (but lose the error
checking above):

function getValue pArray, pPath
  split pPath by comma
  return pArray[pPath]
end getValue


Thanks, Brian. I keep forgetting we can use an array as an element 
specifier.


Has that been around the whole time, or was it added in recent years?


I added it before 6.0 - probably in 4.5 or 5.

Warmest Regards,

Mark.

--
Mark Waddingham ~ m...@livecode.com ~ http://www.livecode.com/
LiveCode: Everyone can create apps

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Re: Tree Widget: hilitedValue?

2022-07-10 Thread Brian Milby via use-livecode
If pPath[1] = “a” and pPath[2] = “b”
Then pArray[pPath] is the same as saying pArray[“a”][“b”]

I’m not sure when it was added.  It is relatively recent (7 or 8 I think, but 
not sure)

Thanks,
Brian

Sent from my iPhone

> On Jul 10, 2022, at 4:46 PM, J. Landman Gay via use-livecode 
>  wrote:
> 
> On 7/9/22 7:11 PM, Brian Milby via use-livecode wrote:
>> function getValue pArray, pPath
>>split pPath by comma
>>return pArray[pPath]
>> end getValue
> 
> I keep forgetting we can do that. It's cool, but I don't understand how it 
> works. Splitting the path by comma produces a numbered array, and yet the 
> function appears to ignore the numerical keys and return only the element 
> values.
> 
> How come?
> 
> -- 
> Jacqueline Landman Gay | jac...@hyperactivesw.com
> HyperActive Software   | http://www.hyperactivesw.com
> 
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Re: Tree Widget: hilitedValue?

2022-07-10 Thread J. Landman Gay via use-livecode

On 7/9/22 7:11 PM, Brian Milby via use-livecode wrote:

function getValue pArray, pPath
split pPath by comma
return pArray[pPath]
end getValue


I keep forgetting we can do that. It's cool, but I don't understand how it works. Splitting the 
path by comma produces a numbered array, and yet the function appears to ignore the numerical 
keys and return only the element values.


How come?

--
Jacqueline Landman Gay | jac...@hyperactivesw.com
HyperActive Software   | http://www.hyperactivesw.com

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Re: Tree Widget: hilitedValue?

2022-07-10 Thread Richard Gaskin via use-livecode

Brian Milby wrote:

> You could also turn the path into an array (but lose the error
> checking above):
>
> function getValue pArray, pPath
>   split pPath by comma
>   return pArray[pPath]
> end getValue

Thanks, Brian. I keep forgetting we can use an array as an element 
specifier.


Has that been around the whole time, or was it added in recent years?

--
 Richard Gaskin
 Fourth World Systems
 Software Design and Development for the Desktop, Mobile, and the Web
 
 ambassa...@fourthworld.comhttp://www.FourthWorld.com

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Re: Tree Widget: hilitedValue?

2022-07-09 Thread Brian Milby via use-livecode
I don't think there is an existing one liner, but it can be done a couple
ways.

Here is a recursive function defined in the PI code for Custom Props:

on fetchArrayDataOnPath pPath, pArray, @rData
   local tKey
   put item 1 of pPath into tKey
   if the number of items in pPath is 1 then
  if tKey is not among the keys of pArray then
 return "no such key"
  else
 put pArray[tKey] into rData
 return empty
  end if
   else
  delete item 1 of pPath
  fetchArrayDataOnPath pPath, pArray[tKey], rData
   end if
end fetchArrayDataOnPath

There are other handlers in that script that could be useful as well
(add/set/delete).

You could also turn the path into an array (but lose the error checking
above):

function getValue pArray, pPath
   split pPath by comma
   return pArray[pPath]
end getValue

Thanks,
Brian

On Sat, Jul 9, 2022 at 5:08 PM J. Landman Gay via use-livecode <
use-livecode@lists.runrev.com> wrote:

> On 7/9/22 3:17 PM, J. Landman Gay via use-livecode wrote:
> > On 7/8/22 12:34 PM, Richard Gaskin via use-livecode wrote:
> >> I see the Tree widget supports a hilitedElement property, which is
> useful for managing the
> >> selection in the UI.
> >>
> >> Is there a one-liner for obtaining not the element path but the value?
> >
> > I'm using an older version, but here the hilitedElement includes the
> values of each element in
> > the path.
> >
>
> I misunderstood, you don't mean just the names of the elements. The value
> shows up as part of
> the tree unless you turn off "show values". I think you'll have to parse
> the array to actually
> get the values in a leaf.
>
> --
> Jacqueline Landman Gay | jac...@hyperactivesw.com
> HyperActive Software   | http://www.hyperactivesw.com
>
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> use-livecode mailing list
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Re: Tree Widget: hilitedValue?

2022-07-09 Thread J. Landman Gay via use-livecode

On 7/9/22 3:17 PM, J. Landman Gay via use-livecode wrote:

On 7/8/22 12:34 PM, Richard Gaskin via use-livecode wrote:
I see the Tree widget supports a hilitedElement property, which is useful for managing the 
selection in the UI.


Is there a one-liner for obtaining not the element path but the value?


I'm using an older version, but here the hilitedElement includes the values of each element in 
the path.




I misunderstood, you don't mean just the names of the elements. The value shows up as part of 
the tree unless you turn off "show values". I think you'll have to parse the array to actually 
get the values in a leaf.


--
Jacqueline Landman Gay | jac...@hyperactivesw.com
HyperActive Software   | http://www.hyperactivesw.com

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Re: Tree Widget: hilitedValue?

2022-07-09 Thread J. Landman Gay via use-livecode

On 7/8/22 12:34 PM, Richard Gaskin via use-livecode wrote:
I see the Tree widget supports a hilitedElement property, which is useful for managing the 
selection in the UI.


Is there a one-liner for obtaining not the element path but the value?


I'm using an older version, but here the hilitedElement includes the values of each element in 
the path.


--
Jacqueline Landman Gay | jac...@hyperactivesw.com
HyperActive Software   | http://www.hyperactivesw.com

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